JP7594513B2 - Medical device having a flow path opening/closing mechanism, and medical tool connector, drug container kit, and drug container with medical tool connector attached thereto - Google Patents

Description

The present invention relates to a medical device that is used to connect a medical tool and a drug container and has a flow path opening and closing mechanism that can switch between a connected state and a non-connected state, as well as a medical tool connector that includes the same, a drug container kit, and a drug container with the medical tool connector attached.

2. Description of the Related Art Various medical devices (such as vial adapters) used to connect medical tools (such as syringes) to drug containers (such as infusion bags and vials) have been known.
For example, the present applicant has also disclosed in Patent Document 1 (Japanese Patent No. 3415714) a drug solution transfer device which is highly safe and capable of preventing contamination and maintaining sterility before and after mixing of drug solutions, and which comprises an instrument body and a double-ended needle supported by the instrument body and having a first needle portion at one end and a second needle portion at the other end, which connects the interiors of a first container (infusion bag) and a second container (vial) via the double-ended needle to transfer drug solutions between them, and which has a member which detaches from the instrument body after transfer of the drug solution and remains in the port portion of the first container (infusion bag).
Furthermore, Patent Document 2 (Japanese Patent No. 5,502,579) discloses a medical device connector that, for the purpose of enabling safe drug administration, comprises an adapter having one end (hollow needle-shaped portion) connectable to an opening sealed by a sealing member of a drug container and the other end (injection device connection portion) connectable to a medical liquid injection device, and a storage member for storing the adapter, wherein the interior of the drug container and the interior of the storage member are connected only via the internal flow path of the hollow needle-shaped portion of the adapter and the injection device connection portion, and a bacteria-impermeable filter.

Patent No. 3415714 Patent No. 5502579

The object of the present invention is to provide a medical device that is used to connect a medical tool and a drug container and has a flow path opening and closing mechanism that can be switched between a connected state and a non-connected state, and that has a flow path opening and closing mechanism that allows for greater operability, as well as a medical tool connector that includes the same, a drug container kit, and a drug container with the medical tool connector attached.

The above objectives are achieved by the following:
(1) A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device further includes a flow path opening and closing mechanism, the flow path opening and closing mechanism including a rotation resistance applying portion that applies resistance to rotation of the rotating portion from the non-communicating state in the predetermined direction .
The above object is also achieved by the following:
(2) A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device has a main body that rotatably houses the rotating part, and the rotation regulating part of the flow path opening and closing mechanism is composed of a protrusion provided on a side of the rotating part and a protrusion storage part that stores the protrusion provided on the main body and extends a predetermined length in the circumferential direction, and when the protrusion of the rotating part rotates from the non-communicating state in the predetermined direction and reaches the communicating position, it abuts against the protrusion storage part, thereby regulating further rotation in the predetermined direction.
The above object is also achieved by the following:
(3) A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device includes a rotating member constituting the rotating portion, a cylindrical main body portion rotatably housing the rotating member, and a packing member non-rotatably housed within the cylindrical main body portion,
a medical device having a flow path opening and closing mechanism, the rotating member having the medical device connection portion at one end and the communicating flow path at the other end, the medical device side flow path connecting the medical device connection portion and the communicating flow path, the packing member having the drug container side flow path and abutting the other end of the rotating member, the rotating member being capable of rotating while abutting against the packing member.
(4) The medical device side flow path of the rotating member extends from the one end side to the other end side of the rotating member and terminates within the rotating member,
the communication flow path communicates with the other end of the medical device flow path and has a side opening that opens on a side surface of the rotating member,
The packing member has a cylindrical storage section that stores the other end of the rotating member, which has the communicating flow path, and the drug container side flow path has a side flow path formed on the inner surface of the cylindrical storage section and extending to the formation section of the side opening of the rotating member, and in the non-communicating state, the side opening of the rotating member is not positioned at the side flow path of the packing member, and the side opening of the rotating member is blocked by the inner surface of the cylindrical storage section of the packing member, and in the communicating position, the side opening of the rotating member faces the side flow path of the packing member, and the drug container side flow path and the medical device side flow path are connected via the communicating flow path. A medical device having a flow path opening and closing mechanism described in (3) above.
(5) A medical device having a flow path opening and closing mechanism as described in (3) above, wherein the medical device-side flow path of the rotating member extends from the one end side to the other end side of the rotating member, the communicating flow path communicates with the other end side of the medical device-side flow path and comprises a lateral flow path extending in a lateral direction of the rotating member, and the packing member has a through hole communicating with the drug container-side flow path, and in the non-communicating state, the lateral flow path of the rotating member is not located on the through hole of the packing member and the lateral flow path of the rotating member is blocked by the packing member, and in the communicating position, the lateral flow path of the rotating member is located on the through hole of the packing member, and the drug container-side flow path and the medical device-side flow path communicate with each other via the communicating flow path.
The above object is also achieved by the following:
(6) A medical device used for connecting a medical instrument to a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device includes a rotating member constituting the rotating portion and a cylindrical main body portion rotatably housing the rotating portion,
a medical device having a flow path opening and closing mechanism, the rotating member having the medical device connection portion at one end and the communicating flow path at the other end, the medical device side flow path connecting the medical device connection portion and the communicating flow path, the cylindrical main body having a bottom plate portion having the drug container side flow path, the bottom plate portion abutting the other end of the rotating member, and the rotating member being capable of rotating while abutting against the bottom plate portion.

( 7 ) The medical device having the flow path opening and closing mechanism according to any one of (1) to (6) above, wherein the medical implement has a nozzle portion, and the medical implement connection portion has a nozzle portion mounting portion.
( 8 ) A medical device having a flow path opening and closing mechanism according to any one of (1) to (6) above, wherein the medical instrument comprises a nozzle portion and a collar that covers the nozzle portion and has a screw portion, the medical instrument connection portion has a nozzle portion mounting portion and a connection mechanism side screw portion that can be screwed with the screw portion of the collar, the screwing portion of the medical instrument and the connection mechanism side screw portion of the medical instrument connection portion progress in screwing with each other by rotating the medical instrument in the predetermined direction, and further, the flow path opening and closing mechanism is capable of completing the screwing between the screw portion of the medical instrument and the connection mechanism side screw portion of the medical instrument connection portion when the rotating portion is located at the communicating position (communicating state) .

The above object is also achieved by the following:
( 9 ) A medical instrument connector including a medical device having the flow path opening and closing mechanism according to any one of (1) to (8) above,
the medical implement connector connects the drug container, which has a container body having an opening, a seal member for sealing the opening of the container body, and a drug contained in the container body, to the medical implement;
The medicine container connection portion of the medical implement connector is provided with a hollow needle-shaped portion capable of penetrating the seal member of the medicine container and communicating with the medicine container-side flow path.

The above objective is also achieved by the following:
( 10 ) A drug container kit including a medical device having a flow path opening and closing mechanism according to any one of (1) to (8) above, and the drug container,
the medical implement connector connects the drug container, which has a container body having an opening, a seal member for sealing the opening of the container body, and a drug contained in the container body, to the medical implement;
A medicine container kit, wherein the medicine container connection portion of the medical instrument connection tool is provided with a hollow needle-shaped portion capable of penetrating the seal member of the medicine container and communicating with the medicine container-side flow path.

The above object is also achieved by the following:
( 11 ) A medical instrument connector equipped with a medical instrument connector, the medical instrument connector being used to connect a medical instrument to a medical instrument container and equipped with a medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state, and the medical instrument container to which the medical instrument connector is attached,
The medical device of the medical implement connector includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section,
the flow path opening and closing mechanism of the medical device comprises a rotating part that rotates in association with the rotation of the medical tool attached to the medical tool connection part, the rotating part comprising a communication flow path that communicates with the medical tool side flow path and is capable of communicating with the drug container side flow path, the flow path opening and closing mechanism further comprises a rotation restricting part that restricts rotation in the predetermined direction after the communication position is reached, the communication flow path of the rotating part being in a non-communicating state where the communication flow path of the rotating part does not communicate with the drug container side flow path, the position of the communication flow path being changed by rotating the rotating part in a predetermined direction, the communication flow path being in a communicating position where the drug container side flow path and the medical tool side flow path are in communication via the communication flow path,
The drug container has a container body having an opening and a drug contained in the container body,
The medicine container with the medical tool connector attached thereto, wherein the medicine container connection portion of the medical tool connector is liquid-tightly attached to the opening of the container body.
(12) A medicine container with a medical instrument connector attached thereto, the medicine container including a medical instrument connector having a medical device having the flow path opening and closing mechanism according to any one of (1) to (8) above, and the medicine container to which the medical instrument connector is attached,
The drug container has a container body having an opening and a drug contained in the container body,
The medicine container with the medical tool connector attached thereto, wherein the medicine container connection portion of the medical tool connector is liquid-tightly attached to the opening of the container body.

The medical device of the present invention comprises a medical tool connection part to which a medical tool can be attached, a medical tool side flow path communicating with the medical tool connection part, a drug container connection part connectable to a drug container, and a drug container side flow path communicating with the drug container connection part. The flow path opening and closing mechanism of the medical device comprises a rotating part that rotates with the rotation of the medical tool attached to the medical tool connection part, and the rotating part comprises a communication flow path that communicates with the medical tool side flow path and can communicate with the drug container side flow path. The flow path opening and closing mechanism is configured such that, by rotating the rotating part in a predetermined direction from a non-communicating state in which the communication flow path of the rotating part does not communicate with the drug container side flow path, the position of the communication flow path changes to a communication position in which the drug container side flow path and the medical tool side flow path are communicated via the communication flow path, and the mechanism is also configured to comprise a rotation restriction part that restricts rotation in the predetermined direction after reaching the communication position. This allows the medical device and drug container to be connected in a switchable manner between a connected and disconnected state, while also providing high operability.

The medical implement connector of the present invention is a medical implement connector equipped with a medical device having the above-mentioned flow path opening and closing mechanism. The medical implement connector connects a medical implement to a container body having an opening, a seal member for sealing the opening of the container body, a drug container having a drug stored in the container body, and the drug container connector of the medical implement connector is equipped with a hollow needle-shaped portion capable of penetrating the seal member of the drug container and communicating with the drug container-side flow path. This allows the medical implement and the drug container to be connected in a switchable manner between a communicating state and a non-communicating state, and also allows for high operability.

The drug container kit of the present invention comprises a medical tool connector having a medical device with the above-mentioned flow path opening and closing mechanism, and a drug container. The medical tool connector of the drug container kit connects a drug container having a container body with an opening, a sealing member that seals the opening of the container body, and a drug stored in the container body, to a medical tool, and the drug container connector of the medical tool connector has a hollow needle-shaped part that can penetrate the sealing member of the drug container and communicates with the drug container-side flow path. This allows the medical tool and the drug container to be connected in a switchable manner between a connected state and a non-connected state, and achieves high operability.

The drug container with attached medical tool connector of the present invention comprises a medical tool connector equipped with a medical device having the above-mentioned flow path opening and closing mechanism, and a drug container to which the medical tool connector is attached. The drug container of the drug container with attached medical tool connector has a container body with an opening and a drug stored in the container body, and the drug container connection part of the medical tool connector is attached liquid-tight to the opening of the container body. This allows the medical tool and the drug container to be connected in a switchable manner between a communicating state and a non-communicating state, and achieves high operability.

FIG. 1 is a front view showing an embodiment of a drug container kit including a medical device of the present invention. FIG. 2 is an exploded perspective view for explaining the configuration of the medicine container kit shown in FIG. FIG. 3 is an explanatory vertical cross-sectional view of the medicine container kit shown in FIG. FIG. 4 is a vertical cross-sectional view for explaining a state in which the medicine container kit shown in FIG. 1 is used. FIG. 5 is a vertical cross-sectional view for explaining a state in which the medicine container kit shown in FIG. 1 is used. FIG. 6 is a vertical cross-sectional view for explaining a state in which the medicine container kit shown in FIG. 1 is used. FIG. 7 is a vertical cross-sectional view for explaining a state in which the medicine container kit shown in FIG. 1 is used. FIG. 8 is an explanatory cross-sectional view taken along line AA of FIG. FIG. 9 is an explanatory cross-sectional view taken along line BB of FIG. FIG. 10 is an explanatory cross-sectional view taken along the line CC of FIG. FIG. 11 is an explanatory cross-sectional view taken along line DD of FIG. FIG. 12 is an explanatory vertical cross-sectional view for explaining another embodiment of a medical device (in a non-communicating state) that can be used in the drug container kit of the present invention. FIG. 13 is a longitudinal sectional view for explaining the communication state of the medical device shown in FIG. FIG. 14 is an explanatory vertical cross-sectional view for explaining another embodiment of a medical device that can be used in the drug container kit of the present invention. FIG. 15 is a front view showing an embodiment of a drug container equipped with a medical tool connector, which includes a medical device of the present invention. FIG. 16 is an exploded perspective view for explaining the configuration of the drug container with the medical tool connector attached shown in FIG. FIG. 17 is an explanatory vertical cross-sectional view of the drug container with the medical tool connector attached shown in FIG. FIG. 18 is a vertical cross-sectional view for explaining a state of use of the drug container with the medical tool connector attached shown in FIG. FIG. 19 is a vertical cross-sectional view for explaining a state of use of the drug container with the medical tool connector attached shown in FIG. FIG. 20 is an explanatory cross-sectional view taken along line E--E of FIG. FIG. 21 is an explanatory cross-sectional view taken along the line FF in FIG. FIG. 22 is an explanatory cross-sectional view taken along line GG in FIG. FIG. 23 is an explanatory cross-sectional view taken along line HH of FIG. FIG. 24 is an explanatory vertical cross-sectional view for explaining another embodiment of a drug container with a medical tool connector attached, which includes a medical device of the present invention. FIG. 25 is an explanatory vertical cross-sectional view for explaining another embodiment of a drug container with a medical tool connector attached, which includes a medical device of the present invention. FIG. 26 is an explanatory vertical cross-sectional view for explaining another embodiment of a drug container with a medical tool connector attached, which includes a medical device of the present invention. FIG. 27 is a vertical cross-sectional view illustrating a state in which the drug container with the medical tool connector attached shown in FIG. 26 is used. FIG. 28 is a front view showing an embodiment of a medical tool connector including a medical device of the present invention. FIG. 29 is an exploded perspective view illustrating the configuration of the medical device connector shown in FIG. 28. As shown in FIG. 30 is an explanatory vertical cross-sectional view of the medical device connector shown in FIG. 28. FIG. FIG. 31 is a longitudinal sectional view illustrating the medical device connector shown in FIG. 28 in use. FIG. 32 is an explanatory vertical cross-sectional view for illustrating the medical device connector shown in FIG. 28 in use. 33 is an explanatory cross-sectional view taken along line JJ in FIG. 31. FIG. FIG. 34 is an explanatory cross-sectional view taken along the line K--K in FIG. FIG. 35 is an explanatory cross-sectional view taken along the line LL in FIG. FIG. 36 is an explanatory cross-sectional view taken along line MM of FIG. FIG. 37 is an explanatory vertical cross-sectional view for explaining another embodiment of a medical tool connector including a medical device of the present invention. FIG. 38 is an explanatory vertical cross-sectional view for explaining another embodiment of a medical tool connector including a medical device of the present invention.

As shown in Figures 1 to 11, examples of a medical device having a flow path opening and closing mechanism of the present invention, a medical tool connector including the same, and a drug container kit are described.

The drug container kit 102 of the present invention includes a medical tool connector 101 having a medical device 100 with a flow path opening and closing mechanism, and a drug container 3. The medical tool connector 101 connects a drug container 3 having a container body 32 with an opening 31, a seal member 33 that seals the opening 31 of the container body 32, and a drug 34 stored in the container body 32, to a medical tool 2. The drug container connector 13 of the medical tool connector 101 includes a hollow needle-shaped portion 18 that can penetrate the seal member 33 of the drug container 3 and communicates with the drug container-side flow path 14.

The medical tool connector 101 of the present invention comprises a medical device 100 having a flow path opening and closing mechanism. The medical tool connector 101 connects a medical tool 2 to a drug container 3 having a container body 32 with an opening 31, a seal member 33 that seals the opening 31 of the container body 32, and a drug 34 stored in the container body 32. The drug container connector 13 of the medical tool connector 101 comprises a hollow needle-shaped portion 18 that can penetrate the seal member 33 of the drug container 3 and communicates with the drug container-side flow path 14.

The medical device 100 of the present invention is used to connect a medical tool (here, a syringe) 2 and a drug container (here, an infusion bag) 3, and has a flow path opening and closing mechanism that can be switched between a connected state and a non-connected state (switchable between a connected state and a non-connected state). The medical device 100 includes a medical tool connection part 11 to which the medical tool 2 can be attached, a medical tool side flow path 12 that communicates with the medical tool connection part 11, a drug container connection part 13 that can be connected to the drug container 3, and a drug container side flow path 14 that communicates with the drug container connection part 13. The flow path opening and closing mechanism includes a rotating part 15 that rotates with the rotation of the medical tool 2 attached to the medical tool connection part 11, and the rotating part 15 includes a communication flow path 16 that communicates with the medical tool side flow path 12 and can communicate with the drug container side flow path 14. The flow path opening and closing mechanism is provided with a rotation restriction part 17 that restricts the rotation of the rotating part 15 in the predetermined direction from a non-communicating state in which the communication flow path 16 of the rotating part 15 is not connected to the drug container side flow path 14, so that the position of the communication flow path 16 changes to a communicating position in which the drug container side flow path 14 and the medical device side flow path 12 are connected via the communication flow path 16.

As shown in FIG. 2, the medical device 100 of this embodiment includes an adaptor 8 connected to the drug container 3, a main body 19 (cylindrical main body 42) attached to the adaptor 8, a packing member 43 housed within the main body 19 (cylindrical main body 42), a rotating part 15 (rotating member 41) that rotates within the packing member 43, and a cap 9 that encases the medical tool connector 101 and is attached to the adaptor 8.

As shown in Figures 1 to 3, the drug container 3 of the drug container kit 102 of this embodiment has a container body 32 with an opening 31, a seal member 33 that seals the opening 31 of the container body 32, and a drug 34 stored in the container body 32.

As shown in Figs. 1 to 3, the container body 32 of the drug container 3 includes a container body portion 35 and a port portion 36. The container body portion 35 is formed of a thin-walled thermoplastic resin, and the drug 34 is stored inside. The port portion 36 is made of a plurality of members made of a hard or semi-hard resin material, and has an approximately cylindrical shape as a whole. One end of the container body portion 35 is fixed to the other end side portion of the port portion 36 by a method such as heat fusion. The other end side opening of the port portion 36 opens in the container body portion 35, and the inside of the container body portion 35 and the inside of the port portion 36 are connected. The one end side opening of the port portion 36 constitutes the opening 31 of the drug container 3. The opening 31 (the one end side opening of the port portion 36) is sealed by a seal member 33 made of an elastic material such as rubber or elastomer. At the axial center of the port portion 36, an annular protrusion 37 protruding outward around the entire circumference is formed.

In the drug container kit 102 of this embodiment, as shown in Figs. 1 to 3, the medical instrument connector 101 (medical device 100) is indirectly attached to the drug container 3 via the adapter 8. The adapter 8 includes an inner tube 81 and an outer tube 83. A tubular recess is formed between the inner tube 81 and the outer tube 83. A top plate 84 is provided at the upper part (one end side) of the inner tube 81. A through hole through which the hollow needle-like part 18 can pass is formed at the center of the top plate 84. A stop rib 82 protruding inward is formed on the inner peripheral surface at the lower end of the adapter 8 (inner tube 81). In addition, a fixing rib 85 protruding inward is formed on the inner peripheral surface at the axial center of the adapter 8 (inner tube 81).
The medical tool connector 101 (medical device 100) is covered with a cap 9. The cap 9 is screwed at its lower part onto the adapter 8 (outer cylinder portion 83).

The medical tool connector 101 and the medical device 100 of this embodiment will be described in more detail. In this embodiment, the rotating member 41 constituting the rotating portion 15 of the medical device 100 has an overall cylindrical outer shape extending in the axial direction (the vertical direction in FIG. 3) as shown in FIG. 2 and FIG. 3. The rotating member 41 is made of a hard or semi-hard resin material.

As shown in FIG. 3, the rotating member 41 has a medical device connection part 11 at one end (upper part in FIG. 3). The medical device connection part 11 has a nozzle part attachment part 44 and a connection mechanism side screw part 45. More specifically, the medical device connection part 11 has an inner tube part 46 and an outer tube part 47. The nozzle part attachment part 44 is formed by the inner peripheral surface of the inner tube part 46. The nozzle part 21 of the medical device 2 described later enters the nozzle part attachment part 44. The outer peripheral surface of the nozzle part 21 and the nozzle part attachment part 44 (the inner peripheral surface of the inner tube part 46) are in liquid-tight contact. The inside of the nozzle part attachment part 44 is preferably, for example, one that has a 6% taper and can connect a normal standard nozzle (female connection part, for example, the nozzle part of a syringe) having a 6% taper, or one that has a 5% taper and can connect a standard nozzle having a 5% taper. The normal standard (6% taper) medical female connector refers to "Match of joints with 6% (approximately 3.43°) tapers on syringe barrels, needles and other medical devices - Part 1: General requirements" in ISO 594-1:1986, and the neuroanesthesia standard (5% taper) corresponds to ISO 80369-6 (neuroanesthesia standard). Note that the inside of the nozzle attachment part 44 may be capable of connecting to both the 6% taper and 5% taper male connectors mentioned above.

The connection mechanism side screw portion 45 is formed on the outer peripheral surface of the inner tube portion 46. The connection mechanism side screw portion 45 can be screwed into the screw portion 22 of the collar 23 of the medical device 2 described below. The collar 23 of the medical device 2 described below is housed between the inner tube portion 46 (the outer peripheral surface of the inner tube portion 46) and the outer tube portion 47 (the inner peripheral surface of the outer tube portion 47).

A medical device side flow path 12 is formed inside the rotating part 15 (rotating member 41) and communicates with the medical device connection part 11 (specifically, the inside of the inner tube part 46 of the medical device connection part 11). The medical device side flow path 12 extends from one end side to the other end side of the rotating member 41 (from the upper side to the lower side in FIG. 3) and terminates inside the rotating member 41.

The rotating part 15 (rotating member 41) has a communication flow path 16 at the other end that communicates with the medical device side flow path 12. The communication flow path 16 communicates with the other end side of the medical device side flow path 12. In other words, the medical device side flow path 12 communicates between the medical device connection part 11 and the communication flow path 16. As shown in Figures 8 and 10, the communication flow path 16 is a single flow path that communicates with the other end side of the medical device side flow path 12 at the lower inside of the rotating member 41 and penetrates the rotating member 41 in the radial direction. The communication flow path 16 has side openings 48, 48 that open on both opposing side surfaces of the rotating member 41.

As shown in Figures 9 and 11, two protrusions 49, 49 are provided in the axial center of the side surface of the rotating part 15 (the outer peripheral surface of the rotating member 41) so as to protrude in opposing directions. Also, as shown in Figure 3, two flanges 50, 50 are formed on the side surface of the rotating part 15, spaced apart in the axial direction and protruding outward around the entire circumference. When stored in the main body part 19 (cylindrical main body part 42), the flanges 50, 50 can rotate while sliding against the inner surface of the main body part 19 (cylindrical main body part 42), and function as a guide to allow the rotating part 15 (rotating member 41) to rotate stably.

The rotating part 15 (rotating member 41) is rotatably housed in the main body 19 (cylindrical main body 42). The cylindrical main body 42 extends in the axial direction (vertical direction in FIG. 3) as a whole, and has a cylindrical shape with a larger outer diameter than the rotating member 41. The cylindrical main body 42 is made of a hard or semi-hard resin material.

3, 6, 7, 9 and 11, the side wall of the main body 19 (the side wall of the cylindrical main body 42) has a protrusion storage section 51, 51 extending a predetermined length in the circumferential direction at the axial center. Each protrusion storage section 51 is a cutout that penetrates the side wall of the main body 19 (the cylindrical main body 42). The protrusion storage section 51, 51 is provided at a position corresponding to the protrusions 49, 49 provided on the rotating section 15 (the rotating member 41), and stores the protrusions 49, 49. In addition, each protrusion storage section 51 has a rotation resistance imparting section 62 that protrudes toward the inside of the protrusion storage section 51. The rotation resistance imparting section 62 is a protrusion that protrudes with approximately the same width and has a flat upper surface. The protrusion 49 of the rotating member 41 moves while sliding on this flat upper surface. The beginning of the rotation resistance imparting portion 62 is an inclined portion 62a that gradually becomes thicker toward the flat upper surface, guiding the protrusion 49 to move toward the flat upper surface.

As shown in FIG. 3, the other end of the main body 19 (cylindrical main body 42) is connected to the drug container connection part 13. In this embodiment, the cylindrical main body 42 and the drug container connection part 13 (including the hollow needle part 18 described later) are integrally formed. The drug container connection part 13 includes a substantially disk-shaped top plate part 52 and a cylindrical side plate part 53 extending downward from the peripheral part of the top plate part 52. A plurality of slits 54 are formed in the side plate part 53, and the part of the side plate part 53 between the slits 54, 54 is elastically deformable in the radial direction. In this embodiment, the drug container connection part 13 is connected to the drug container 3 by utilizing the elastic force of the side plate part 53.

In this embodiment, the drug container connection part 13 is indirectly connected to the drug container 3 via the adapter 8. Specifically, the drug container connection part 13 is attached to the inner tube part 81 of the adapter 8 by utilizing the elastic force of the side plate part 53, and the adapter 8 is attached so that the upper part of the port part 36 of the drug container 3 (the one end side part including the opening part 31 and the seal member 33) is stored within the inner tube part 81. The adapter 8 is prevented from coming off from the port part 36 by the interference of the anti-slip rib 82 with the annular protrusion part 37 of the port part 36.

As shown in FIG. 3, the drug container connection part 13 includes a hollow needle-shaped part 18. Specifically, the hollow needle-shaped part 18 extends downward from the center of the upper part (top plate part 52) of the drug container connection part 13. The hollow needle-shaped part 18 includes a sharp tip part 55 that can enter and penetrate the seal member 33 of the drug container 3, an internal flow path 56 that communicates with the drug container side flow path 14, and an opening 57 that communicates the inside (internal flow path 56) of the hollow needle-shaped part 18 with the outside at the end part (the end part on the other side) of the internal flow path 56. The opening 57 is open on the side, so that foreign matter (such as pieces of the seal member 33) is less likely to enter when the hollow needle-shaped part 18 penetrates the seal member 33.

3, 8 and 10, the packing member 43 is non-rotatably housed in the other end of the cylindrical main body 42. The packing member 43 is made of a soft resin material or an elastic material such as rubber or elastomer. The packing member 43 has a cylindrical storage section 58 capable of housing the other end of the rotating member 41 having the communication flow path 16. The inner shape (inner diameter) of the cylindrical storage section 58 is set to be equal to or slightly smaller than the outer shape (outer diameter) of the other end of the rotating member 41. As a result, the inner circumferential surface of the cylindrical storage section 58 and the outer circumferential surface of the rotating member 41 are in liquid-tight contact with each other, while the rotating member 41 is allowed to rotate relative to the packing member 43. Also, as shown in FIG. 8, when the side openings 48, 48 of the rotating member 41 (communication flow path 16) are not positioned in the side flow paths 61, 61 of the packing member 43 described below, the side openings 48, 48 are liquid-tightly closed by the cylindrical storage portion 58.

As shown in FIG. 3, the other end of the packing member 43 is closed by a bottom plate portion 59. The lower surface (surface on the other end side) of the bottom plate portion 59 abuts against the upper surface (surface on one end side) of the top plate portion 52 of the drug container connection portion 13. The upper surface (surface on one end side) of the bottom plate portion 59 abuts against the other end of the rotating member 41. The rotating member 41 is capable of rotating while abutting against the packing member 43. Two through holes 60, 60 are formed in the bottom plate portion 59. The cylindrical storage portion 58 and the hollow needle-shaped portion 18 (internal flow path 56) are in communication with each other via the through holes 60, 60.

The packing member 43 is provided with the drug container side flow path 14 (part or all). As shown in Figs. 3, 8 and 10, the drug container side flow path 14 is provided with side flow paths 61, 61 formed on the inner surface of the cylindrical storage section 58 and extending to the formation portion of the side openings 48, 48 of the rotating member 41. Specifically, each side flow path 61 is formed so as to gouge the inner surface of the cylindrical storage section 58, and the two side flow paths 61, 61 are formed at positions facing each other so as to correspond to the side openings 48, 48 of the rotating member 41. The side flow paths 61, 61 are respectively connected to the through holes 60, 60. In this embodiment, the side flow paths 61, 61 and the through holes 60, 60 each constitute a part of the drug container side flow path 14. The drug container side flow path 14 is provided with a bottom flow path that communicates the side flow paths 61, 61 and the through holes 60, 60.

As described above, the medical device 100 of this embodiment includes a rotating member 41 constituting the rotating section 15, a cylindrical main body 42 in which the rotating member 41 is rotatably housed, and a packing member 43 housed non-rotatably within the cylindrical main body 42. The rotating member 41 includes a medical device connection section 11 at one end and a communication flow path 16 at the other end, the medical device side flow path 12 communicates between the medical device connection section 11 and the communication flow path 16, the packing member 43 includes a drug container side flow path 14 and abuts against the other end of the rotating member 41, and the rotating member 41 is rotatable in a state of abutment with the packing member 43.

Next, the operation of connecting the medical instrument 2 and the drug container 3 using the medical instrument connector 101 equipped with the medical device 100 equipped with a flow path opening and closing mechanism in the drug container kit 102 of this embodiment will be described.

The medical instrument 2 in this embodiment is a syringe, and as shown in FIG. 5, includes a nozzle portion 21 connected to the tip of the outer tube main body portion 24. The medical instrument connection portion 11 of the medical device 100 (medical instrument connection tool 101) includes a nozzle portion attachment portion 44 to which the nozzle portion 21 can be attached.

More specifically, as shown in FIG. 5, the medical device 2 includes a nozzle portion 21 and a collar 23 that encases the nozzle portion 21 and has a screw portion 22, and the medical device connection portion 11 includes a nozzle portion mounting portion 44 and a connection mechanism side screw portion 45 that can be screwed with the screw portion 22 of the collar 23. The screw portion 22 of the medical device 2 and the connection mechanism side screw portion 45 of the medical device connection portion 11 are screwed together by rotating the medical device 2 in a predetermined direction (e.g., clockwise), and the flow path opening and closing mechanism is capable of completing the screwing between the screw portion 22 of the medical device 2 and the connection mechanism side screw portion 45 of the medical device connection portion 11 when the rotating portion 15 is in the communication position.

The medical device (syringe) 2 can be either one that contains the drug 34 to be added to the drug container 3 (for mixing) or one that is used to extract the drug 34 from the drug container 3 [one that does not contain any drug solution or the like in advance (for extraction)].

In the drug container kit 102, in the initial state (the state shown in FIG. 3), the flow path opening and closing mechanism of the medical device 100 is in a non-communicating state. In other words, in the medical device 100, the communication flow path 16 of the rotating part 15 (rotating member 41) is not in communication with the drug container side flow path 14. Specifically, as shown in FIG. 8, in the non-communicating state of the flow path opening and closing mechanism of the medical device 100, the side openings 48, 48 of the rotating member 41 are not positioned in the side flow paths 61, 61 of the packing member 43, and the side openings 48, 48 of the rotating member 41 are blocked by the inner surface of the cylindrical storage section 58 of the packing member 43.

First, as shown in FIG. 4, with the cap 9 attached, the medical tool connector 101 is moved to the drug container 3 (the adapter 8 is moved to the port portion 36 side). As a result, the fixing rib 85 of the adapter 8 (inner tube portion 81) fits into the annular protrusion 37 of the port portion 36, and the top plate portion 84 of the adapter 8 abuts against the upper end (upper end surface) of the port portion 36 and/or the seal member 33, thereby fixing the medical tool connector 101 (medical device 100) to the drug container 3 via the adapter 8. In this embodiment, the medical tool connector 101 is not pushed into the rib 85 in advance, so that unintentional piercing of the needle 18 can be prevented. The medical tool connector 101 may be fixed to the drug container in advance.

In the drug container kit 102 of this embodiment, when connecting the medical tool 2 and the drug container 3 using the medical tool connector 101 including the medical device 100 including the flow path opening and closing mechanism, the cap 9 is removed, and the medical tool 2 is attached to the medical tool connector 11 as shown in FIG. 5. Specifically, the nozzle portion 21 of the medical tool 2 is inserted into the nozzle portion attachment portion 44 (inside the inner tube portion 46) of the medical tool connector 11, and the medical tool 2 is rotated in a predetermined direction (here, clockwise). This causes the screwing portion 22 of the medical tool 2 to screw into the connection mechanism side screwing portion 45 of the medical tool connector 11.

Here, the flow path opening and closing mechanism of the medical device 100 of this embodiment is provided with a rotation resistance imparting portion 62 that imparts resistance to the rotation of the rotating portion 15 (rotating member 41) in a predetermined direction (here, clockwise) from a non-communicating state. Specifically, as shown in FIG. 9, each protrusion storage portion 51 of the main body portion 19 (cylindrical main body portion 42) is formed with a rotation resistance imparting portion 62 that protrudes toward the inside (upward) of the protrusion storage portion 51. This allows the screwing of the screwing portion 22 of the medical tool 2 and the connection mechanism side screwing portion 45 of the medical tool connection portion 11 to proceed preferentially, rather than the rotation of the rotating portion 15 (rotating member 41) [rotation relative to the main body portion 19 (cylindrical main body portion 42) and the packing member 43].

When the screwing portion 22 of the medical device 2 and the connection mechanism side screwing portion 45 of the medical device connection portion 11 (attachment of the nozzle 21 of the medical device 2 to the nozzle attachment portion 44 of the medical device connection portion 11) have progressed to a certain extent or have been completed, if the medical device 2 is further rotated in a predetermined direction (here, clockwise), the rotating portion 15 (rotating member 41) overcomes the rotation resistance (the protrusions 49, 49 overcome the rotation resistance imparting portions 62, 62) and rotates [rotates relative to the main body portion 19 (cylindrical main body portion 42) and the packing member 43] in conjunction with the rotation of the medical device 2.

When the medical device 2 attached to the medical device connection part 11 rotates, the rotating part 15 (rotating member 41) rotates in a predetermined direction, changing the position of the communication flow path 16, and the drug container side flow path 14 and the medical device side flow path 12 become in a communication position in which they communicate with each other via the communication flow path 16. Specifically, as shown in Figures 6 and 10, in the communication position (communication state) of the flow path opening and closing mechanism, the side openings 48, 48 of the rotating member 41 face the side flow paths 61, 61 of the packing member 43, and the drug container side flow path 14 and the medical device side flow path 12 communicate with each other via the communication flow path 16.

That is, in the medical device 100 having the flow path opening and closing mechanism of this embodiment, as described above, the medical device side flow path 12 of the rotating member 41 extends from one end side (the medical device connection portion 11 side) of the rotating member 41 to the other end side and terminates within the rotating member 41, the communication flow path 16 communicates with the other end side of the medical device side flow path 12 and has side openings 48, 48 that open on the side of the rotating member 41, the packing member 43 has a cylindrical storage section 58 that stores the other end of the rotating member 41 having the communication flow path 16, and the drug container side flow path 14 has side flow paths 61, 61 formed on the inner surface of the cylindrical storage section 58 and extending to the formation portions of the side openings 48, 48 of the rotating member 41. In the non-communicating state of the flow path opening/closing mechanism of the medical device 100, the side openings 48, 48 of the rotating member 41 are not positioned in the side flow paths 61, 61 of the packing member 43, and the side openings 48, 48 of the rotating member 41 are blocked by the inner surface of the cylindrical storage section 58 of the packing member 43. In the communicating position, the side openings 48, 48 of the rotating member 41 face the side flow paths 61, 61 of the packing member 43, and the drug container side flow path 14 and the medical device side flow path 12 communicate with each other via the communicating flow path 16.

The medical device 100 is provided with a rotation restriction section 17 that restricts the rotation of the rotating section 15 (rotating member 41) in a predetermined direction after the rotating section 15 (rotating member 41) reaches the communication position. Specifically, as shown in FIG. 11, the protrusions 49, 49 provided on the side of the rotating section 15 (rotating member 41) abut against the protrusion storage sections 51, 51 (more specifically, the inner wall surfaces of the ends of the protrusion storage sections 51, 51 in a predetermined direction), restricting the rotating section 15 (rotating member 41) from further rotating in the predetermined direction.

That is, the medical device 100 includes a main body 19 (cylindrical main body 42) that rotatably houses the rotating part 15 (rotating member 41), and the rotation regulating part 17 of the flow path opening and closing mechanism is composed of protrusions 49, 49 provided on the side of the rotating part 15 and protrusion storage parts 51, 51 that store the protrusions 49, 49 provided on the main body 19 and extend a predetermined length in the circumferential direction. When the rotating part 15 (rotating member 41) in the flow path opening and closing mechanism reaches a communicating position after rotating in a predetermined direction from a non-communicating state, the protrusions 49, 49 of the rotating part 15 abut against the protrusion storage parts 51, 51, and regulate further rotation of the rotating part 15 (rotating member 41) in the predetermined direction. This prevents the rotating part 15 (rotating member 41) from rotating beyond the communicating position and becoming non-communicating (non-communicating position) again. In addition, by rotating the rotating part 15 (rotating member 41) in a specific direction (e.g., clockwise) until its rotation is restricted, it becomes clear that the communication position (communication state) is reached, improving operability.

In addition, in the flow path opening and closing mechanism of the medical device 100, when the rotating part 15 (rotating member 41) is in the communicating position (communicating state), the screwing part 22 of the medical tool 2 and the connection mechanism side screwing part 45 of the medical tool connection part 11 can be in a completed state. The screwing part 22 of the medical tool 2 and the connection mechanism side screwing part 45 of the medical tool connection part 11 may be completed before the rotation restriction part 17 functions (before the protrusions 49, 49 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 51, 51), or may be completed by applying a further rotation force in a predetermined direction to the medical tool 2 after the rotation restriction part 17 functions (after the protrusions 49, 49 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 51, 51).

Then, in a state where the drug container side flow path 14 and the medical device side flow path 12 are in a communication position where they are connected via the communication flow path 16 [a state where the rotation of the rotation part 15 (rotation member 41) in a predetermined direction is restricted by the rotation restriction part 17], the medical device 2 is pushed into the drug container 3 without pushing the plunger (not shown). As a result, as shown in FIG. 7, the medical device connector 101 (medical device 100) moves toward the drug container 3. More specifically, the side plate part 53 of the drug container connector 13 moves toward the drug container 3 along the inner tube part 81 of the adapter 8 (while the inner peripheral surface of the side plate part 53 slides against the outer peripheral surface of the inner tube part 81). Then, due to such movement of the medical device connector 101 (medical device 100) toward the drug container 3, the hollow needle part 18 of the medical device connector 101 enters the seal member 33 and penetrates the seal member 33.

Although it is necessary to rotate the medical tool 2 twice (in two stages), first, the screwing portion 22 of the medical tool 2 is screwed into the connection mechanism side screwing portion 45 of the medical tool connection part 11 without rotating the rotating part 15 (rotating member 41), and then the medical tool 2 is pushed into the drug container 3 in a state where the drug container side flow path 14 and the medical tool side flow path 12 are not connected. As a result, the medical tool connection tool 101 (medical device 100) moves toward the drug container 3, and the side plate part 53 of the drug container connection part 13 moves toward the drug container 3 along the inner tube part 81 of the adapter 8 (while the inner peripheral surface of the side plate part 53 slides against the outer peripheral surface of the inner tube part 81), penetrating the seal member 33. Next, the medical device 2 connected to the rotating part 15 (rotating member 41) may be rotated to a communication position in which the drug container side flow path 14 and the medical device side flow path 12 are in communication with each other via the communication flow path 16 [a state in which the rotation of the rotating part 15 (rotating member 41) in a predetermined direction is restricted by the rotation restriction part 17].

As shown in FIG. 7, the movement of the medical tool connector 101 (medical device 100) toward the drug container 3 is completed by the abutment of the drug container connector 13 [the lower surface (other end surface) of the top plate 52] and the adapter 8 [the upper surface (one end surface) of the top plate 84]. The hollow needle-shaped portion 18 penetrates the seal member 33, and the opening 57 of the hollow needle-shaped portion 18 is exposed inside the drug container 3. This allows the medical tool 2 and the drug container 3 to be connected in a communicating state. Specifically, the medical tool 2 and the drug container 3 communicate with each other through the medical tool side flow path 12, the communication flow path 16, the side openings 48, 48, the drug container side flow path 14 (including the side flow paths 61, 61 and the through holes 60, 60), the internal flow path 56, and the opening 57.

In addition, in the drug container kit 102 of this embodiment, when the medical instrument 2 is attached to the medical instrument connector 101 (medical device 100), the flow path opening and closing mechanism can be changed from a connected state (connected position) to a non-connected position (non-connected state).

First, the medical device 2 is rotated in the opposite direction to the predetermined direction (counterclockwise in this case) from the communication state shown in FIG. 7 and FIG. 10. At this time, the nozzle portion 21 of the medical device 2 is attached to the nozzle portion attachment portion 44 (inner cylindrical portion 46) of the medical device connection portion 11 (in other words, frictional force between the outer peripheral surface of the nozzle portion 21 and the inner peripheral surface of the nozzle portion attachment portion 44) and the screwing force (force required to release the screwing) between the screwing portion 22 of the medical device 2 and the connection mechanism side screwing portion 45 of the medical device connection portion 11 causes the rotating portion 15 (rotating member 41) to rotate in the opposite direction to the predetermined direction [rotating with respect to the main body portion 19 (cylindrical main body portion 42) and the packing member 43] in conjunction with the rotation of the medical device 2. As a result, the flow path opening and closing mechanism of the medical device 100 transitions from the communication state shown in FIG. 7 and FIG. 10 to the non-communication position shown in FIG. 8.

The rotation of the rotating part 15 (rotating member 41) in the direction opposite to the predetermined direction [rotation relative to the main body part 19 (cylindrical main body part 42) and the packing member 43] accompanying the rotation of the medical device 2 is restricted by the protrusions 49, 49 of the rotating part 15 (rotating member 41) abutting against the inner wall surface of the end of the protrusion storage part 51, 51 in the direction opposite to the predetermined direction, as shown in Figure 9. In other words, the protrusions 49, 49 and the protrusion storage part 51, 51 also function as a second rotation restriction part that restricts the rotation of the rotating part 15 (rotating member 41) in the direction opposite to the predetermined direction after reaching the non-communicating position from the communicating state. This prevents the rotating part 15 (rotating member 41) from rotating beyond the non-communicating position and returning to the communicating state. In addition, by rotating the rotating part 15 (rotating member 41) in the opposite direction to the specified direction (e.g., counterclockwise) until its rotation is restricted, it becomes clear that the flow path opening and closing mechanism is in the non-communicating position (non-communicating state), improving operability.

In the medical device 100 of this embodiment, it is preferable that the attached state of the medical instrument 2 is not released before the second rotation restriction portion functions [before the protrusions 49, 49 of the rotating portion 15 (rotating member 41) abut against the inner wall surface of the end portion of the protrusion storage portion 51, 51 in the opposite direction to the specified direction]. Therefore, it is preferable that the rotation resistance [force that prevents the rotation of the rotating portion 15 (rotating member 41) relative to the main body portion 19 (cylindrical main body portion 42)] applied by the rotation resistance applying portions 62, 62 is smaller than the force for releasing the attached state of the medical instrument 2.

In the medical device 100, if the medical instrument 2 is released from the attached state before the second rotation restriction part functions, after removing the medical instrument 2, it is recommended to manually rotate the rotating part 15 (rotating member 41) until the protrusions 49, 49 abut against the inner wall surface at the end opposite to the specified direction of the protrusion storage parts 51, 51.

In such a medical device 100, and in the medical connection tool 101 and drug container kit 102 including the medical device 100, the connection state between the medical device 2 and the drug container 3 can be switched by shifting the flow path opening and closing mechanism from a non-communicating or communicating state to a communicating or non-communicating position as the medical device 2 rotates. In other words, even when the medical device 2 and the drug container 3 are connected multiple times, there is no need to penetrate the hollow needle-shaped portion 18 multiple times through the sealing member 33. This makes it possible to prevent deterioration or damage to the sealing member 33, and the resulting entry of foreign matter.

The medical device 100 (medical tool connector 101) may be used with a separately prepared drug container, rather than as part of the drug container kit 102 (prepared together with the drug container 3).

12 and 13 show another embodiment of the medical device (and the medical implement connector having the same) of the present invention. In the medical device 100a (medical implement connector 101a), the form of the communication flow path and the packing member is different from that of the above-mentioned medical device 100 (medical implement connector 101). Unless otherwise specified, the medical device 100a (medical implement connector 101a) has substantially the same configuration as the above-mentioned medical device 100 (medical implement connector 101), and such configuration will be given the same names and symbols (sometimes with an a at the end) and detailed description will be omitted.

In the medical device 100a, as shown in FIG. 12 (non-communicating state) and FIG. 13 (communicating state), the medical device side flow path 12 of the rotating member 41a extends from one end side to the other end side of the rotating member 41a, the communication flow path 16a communicates with the other end side of the medical device side flow path 12 and has a lateral flow path 63 extending in the side direction of the rotating member 41a, and the packing member 43a has through holes 60, 60 that communicate with the drug container side flow path 14, and the non-communicating state shown in FIG. In this state, the lateral flow path 63 of the rotating member 41a is not positioned above the through holes 60, 60 of the packing member 43a, and the lateral flow path 63 of the rotating member 41a is blocked by the packing member 43a. In the communicating position (communicating state) shown in FIG. 13, the lateral flow path 63 of the rotating member 41a is positioned above the through holes 60, 60 of the packing member 43a, and the drug container side flow path 14 and the medical device side flow path 12 communicate with each other via the communication flow path 16a (lateral flow path 63).

In this embodiment, the lateral flow path 63 does not reach the side of the rotating member 41a. Specifically, in the medical device 100a, the communication flow path 16a (lateral flow path 63) does not reach the side of the rotating member 41a, and therefore does not open on the side of the rotating member 41a (the rotating member 41a does not have a side opening). The communication flow path 16a (lateral flow path 63) may reach the side of the rotating member 41a. Also, the packing member 43a does not have a side flow path.

In this embodiment, the lateral flow passage 63 is a recess extending a predetermined length and formed in the tip surface of the rotating member 41a (the surface facing the inner bottom surface of the packing).
In such a medical device 100a, the flow path opening and closing mechanism is also configured to transition from a non-communicating state [a state in which the communication flow path 16a (lateral flow path 63) is not connected to the through hole 60, as shown in Figure 12] to a communicating position [a position in which the communication flow path 16a (lateral flow path 63) is connected to the through hole 60, as shown in Figure 13] by rotating the rotating part 15 (rotating member 41a) in a predetermined direction in conjunction with the rotation of the medical instrument 2.

In such a medical device 100a (medical tool connector 101a), the configuration of the rotating member 41a and the packing member 43a is simpler than that of the rotating member 41 and the packing member 43 of the medical device 100 (medical tool connector 101) of the above-mentioned embodiment, so that the manufacturing cost can be reduced.

Figure 14 shows another embodiment of the medical device of the present invention. In medical device 100b (medical tool connector 101b), a packing member is not provided, and the shape of the rotating member and the cylindrical main body is different from that of the above-mentioned medical device 100 (medical tool connector 101). Unless otherwise specified, medical device 100b (medical tool connector 101b) has a configuration substantially similar to that of the above-mentioned medical device 100 (medical tool connector 101), and such configuration will be given the same names and symbols (sometimes with the suffix b) and will not be described in detail.

The medical device 100b comprises a rotating member 41b constituting the rotating section 15, and a cylindrical main body 42b in which the rotating section 15 is rotatably housed. The rotating member 41b comprises a medical device connection section 11 at one end and a communication flow path 16b at the other end. The medical device side flow path 12 communicates between the medical device connection section 11 and the communication flow path 16b. The cylindrical main body 42b comprises a bottom plate section 64 having a drug container side flow path 14. The bottom plate section 64 abuts against the other end of the rotating member 41b, and the rotating member 41b is rotatable in abutment against the bottom plate section 64.

Specifically, as shown in FIG. 14, a disk-shaped bottom plate portion 64 is formed at the other end of the cylindrical main body portion 42b so as to close the other end. The bottom plate portion 64 is integrated with the top plate portion 52 of the drug container connection portion 13 (in other words, the cylindrical main body portion 42b and the drug container connection portion 13 are integrated). At the radial center portion, a gap 66 is formed between the bottom plate portion 64 and the top plate portion 52. Two through holes 65, 65 are formed in the bottom plate portion 64. The through holes 65, 65 form the drug container side flow path 14b.

In the medical device 100b (medical tool connector 101b), the communication flow path 16b (lateral flow path) does not reach the side of the rotating member 41b, and therefore does not open on the side of the rotating member 41b (the rotating member 41b does not have a side opening). In the medical device 100b, the flow path opening and closing mechanism is shifted from a non-communicating state (a state in which the communication flow path 16b does not communicate with the through hole 65) to a communicating position (a position in which the communication flow path 16b communicates with the through hole 65) by the rotation of the rotating part 15 (rotating member 41b) in a predetermined direction accompanying the rotation of the medical tool 2. In such a medical device 100b (medical tool connector 101b), the packing member can be omitted compared to the medical device 100 of the above-mentioned embodiment, and therefore the manufacturing cost can be reduced.

In FIG. 14, the hollow needle portion 18 is shown as being integral with the drug container connection portion 13 (and the cylindrical main body portion 42b), but in order to form the gap 66, the hollow needle portion 18 may be molded as a separate body and then fixed to the drug container connection portion 13 by a method such as welding.

As shown in Figures 15 to 23, examples of a medical device having a flow path opening and closing mechanism of the present invention, a medical tool connector including the same, and a drug container with the medical tool connector attached will be described. Note that in the medical device 200 of this example, the medical tool connector 201 including the same, and the drug container with the medical tool connector attached 202, the configurations that are approximately the same as those of the medical device 100 of the above-mentioned example will use the same names and symbols (sometimes with a "2" at the beginning), and detailed descriptions may be omitted.

The drug container 202 with the medical tool connector attached of the present invention comprises a medical tool connector 201 having a medical device 200 with a flow path opening and closing mechanism, and a drug container 30 to which the medical tool connector 201 is attached. The drug container 30 has a container body 232 with an opening 231, and a drug 234 stored in the container body 232. The drug container connection part 213 of the medical tool connector 201 is liquid-tightly attached to the opening 231 of the container body 232. The medical tool connector 201 of this embodiment does not have a hollow needle-shaped part, unlike the medical tool connector 101 of the above-mentioned embodiment.

As shown in FIG. 16, the medical device 200 of this embodiment includes a main body 219 (cylindrical main body 242) connected to the drug container 30, a packing member 243 housed within the main body 219 (cylindrical main body 242), a rotating part 215 (rotating member 241) that rotates within the packing member 243, and a protective cap 90 attached to the rotating part 215 (rotating member 241).

The drug container 30 of the drug container 202 with the medical device connector attached in this embodiment has a container body 232 with an opening 231, and a drug 234 stored in the container body 232. The drug container 30 is a glass or hard resin bottle, a so-called vial. As shown in FIG. 17, the container body 232 of the drug container 30 opens to the outside at one end (opening 231), and a flange portion 38 that protrudes radially outward is formed at one end of the container body 232.

The medical tool connector 201 and medical device 200 of this embodiment will be described in more detail. In this embodiment, the rotating member 241 constituting the rotating part 215 of the medical device 200 is made of a hard or semi-hard resin material, and its overall outer shape extends in the axial direction (the vertical direction in FIG. 17).

As shown in Figures 17 to 19, the rotating member 241 has a medical device connection part 211 at one end (the upper part in Figure 17). The medical device connection part 211 has a nozzle part attachment part 244 and a connection mechanism side screw part 245. More specifically, the medical device connection part 211 is cylindrical, and its inner peripheral surface forms the nozzle part attachment part 244. A nozzle part 221 of the medical device 20 described below enters the nozzle part attachment part 244. The outer peripheral surface of the nozzle part 221 and the nozzle part attachment part 244 (the inner peripheral surface of the medical device connection part 211) are in liquid-tight contact with each other.

The connection mechanism side screw portion 245 is formed on the outer peripheral surface of the medical device connection portion 211. The connection mechanism side screw portion 245 can be screwed with the screw portion 222 of the collar 223 of the medical device 20 described later. In the initial state (or the state before use, as shown in FIG. 17) of the drug container 202 with the medical device connection device attached, a protective cap 90 is attached to the medical device connection portion 211. The protective cap 90 includes a cover member 91 made of a hard or semi-hard resin material and a sealing member 92 made of an elastic material such as rubber or elastomer fixed inside the cover member 91. The protective cap 90 is attached by screwing the connection mechanism side screw portion 245 of the medical device connection portion 211 at a screw portion formed on the inner peripheral surface of the cover member 91. A cover flange 93 protruding radially outward is formed from the outer peripheral surface of the cover member 91. The cover flange 93 preferably covers the entire opening at one end of the main body 219 (cylindrical main body 242), which will be described later. This prevents foreign matter from entering the main body 219 (cylindrical main body 242). In addition, the sealing member 92 of the protective cap 90 liquid-tightly seals the nozzle mounting portion 244.

Inside the rotating part 215 (rotating member 241), a medical device side flow path 212 that communicates with the medical device connection part 211 is formed. The medical device side flow path 212 extends from one end side to the other end side of the rotating member 241 (from the upper side to the lower side in FIG. 17) and terminates inside the rotating member 241.

The rotating part 215 (rotating member 241) has a communication channel 216 at the other end that communicates with the medical device side channel 212. The communication channel 216 communicates with the other end side of the medical device side channel 212. In other words, the medical device side channel 212 communicates between the medical device connection part 211 and the communication channel 216. As shown in Figures 20 and 22, the communication channel 216 is a single channel that communicates with the other end side of the medical device side channel 212 at the lower inside of the rotating member 241 and penetrates the rotating member 241 in the radial direction. The communication channel 216 has side openings 248, 248 that open on both opposing side surfaces of the rotating member 241.

As shown in Figures 19, 21 and 23, two protrusions 249, 249 are provided at the axial center of the side surface of the rotating portion 215 (the outer circumferential surface of the rotating member 241) so as to protrude in opposing directions.
The rotating part 215 (rotating member 241) is rotatably housed in one end portion (first main body portion 267) of the main body portion 219 (cylindrical main body portion 242). The cylindrical main body portion 242 has a first main body portion 267 (one end portion of the cylindrical main body portion 242) and a second main body portion 268 (the other end portion of the cylindrical main body portion 242). The cylindrical main body portion 242 is made of a hard or semi-hard resin material, and is a cylindrical member whose overall outer shape extending in the axial direction (the up-down direction in FIG. 17) is larger than that of the rotating member 241.

As shown in Figures 17 to 19, two flanges 250, 250 are formed on the side of the rotating part 215, spaced apart in the axial direction and protruding outward around the entire circumference. When stored in the main body 219 (cylindrical main body 242), the flanges 250, 250 are rotatable while sliding against the inner surface of the main body 219 (cylindrical main body 242), and function as a guide to allow the rotating part 215 (rotating member 241) to rotate stably.

17, 21 and 23, the side wall (side wall of the first main body 267) of the main body 219 (cylindrical main body 242) is provided at the axial center with protrusion storage sections 251, 251 extending in the circumferential direction for a predetermined length. Each protrusion storage section 251 is a cutout (window) penetrating the side wall of the main body 219 (cylindrical main body 242). The protrusion storage sections 251, 251 are provided at positions corresponding to the protrusions 249, 249 provided on the rotating section 215 (rotating member 241), and store the protrusions 249, 249. In addition, each protrusion storage section 251 is formed with a rotation resistance imparting section 262 that protrudes toward the inside of the protrusion storage section 251. The rotation resistance imparting section 262 is a protrusion that protrudes with approximately the same width and has a flat upper surface. The protrusion 249 of the rotating member 241 moves while sliding on this flat upper surface. The beginning of the rotation resistance imparting portion 262 is an inclined portion 262a that gradually becomes thicker toward the flat upper surface, guiding the protrusion 249 toward the flat upper surface.

The second body 268 of the body 219 (cylindrical body 242) has a larger outer shape than the first body 267 and includes a cylindrical side plate 253 that extends downward. A plurality of slits 254 are formed in the side plate 253 (see FIG. 15), and the portion of the side plate 253 between the slits 254, 254 is elastically deformable in the radial direction.

In this embodiment, the main body 219 (cylindrical main body 242) is engaged with the drug container 30 at the other end portion (second main body 268). Specifically, as shown in FIG. 17, an engagement rib 269 protruding inward is provided on the inner peripheral surface of the second main body 268 (each side plate portion 253). In addition, a step portion 270 is formed inside the main body 219 (cylindrical main body 242) at the boundary between the first main body 267 and the second main body 268. In the medical tool connector 201 (medical device 200), the flange portion 38 of the drug container 30 is sandwiched between the step portion 270 of the main body 219 (cylindrical main body 242) and the engagement rib 269, so that the cylindrical main body 242 (second main body 268) engages with the drug container 30 and is in an attached state.

17, 20 and 22, the packing member 243 is housed in the cylindrical main body 242 in a non-rotatable manner. The packing member 243 extends in the axial direction and is made of a soft resin material or an elastic material such as rubber or elastomer. The packing member 243 has a cylindrical storage section 258 at one end portion thereof that can store the other end portion of the rotating member 241 having the communication flow path 216. The inner shape (inner diameter) of the cylindrical storage section 258 is set to be equal to or slightly smaller than the outer shape (outer diameter) of the other end portion of the rotating member 241. As a result, the inner peripheral surface of the cylindrical storage section 258 and the outer peripheral surface of the rotating member 241 are in liquid-tight contact with each other, while the rotating member 241 can rotate relative to the packing member 243. In addition, when the side openings 248, 248 of the rotating member 241 (communication flow path 216) are not positioned in the side flow paths 261, 261 of the packing member 243 described below, the side openings 248, 248 are liquid-tightly closed by the cylindrical storage portion 258.

A bottom plate portion 259 is formed in the axial center of the packing member 243. The upper surface (the surface on one end side) of the bottom plate portion 259 abuts against the other end of the rotating member 241. The rotating member 241 is capable of rotating while abutting against the bottom plate portion 259 of the packing member 243. Two through holes 260, 260 are formed in the bottom plate portion 259. The cylindrical storage portion 258 and the drug container connection portion 213 described later are in communication with each other via the through holes 260, 260.

The packing member 243 has a drug container side flow path 214 (part or all). As shown in Figs. 17, 20 and 22, the drug container side flow path 214 has side flow paths 261, 261 formed on the inner surface of the cylindrical storage section 258 and extending to the formation portion of the side openings 248, 248 of the rotating member 241. Specifically, each side flow path 261 is formed so as to gouge the inner surface of the cylindrical storage section 258, and the two side flow paths 261, 261 are formed at positions facing each other so as to correspond to the side openings 248, 248 of the rotating member 241. The side flow paths 261, 261 are respectively connected to the through holes 260, 260. In this embodiment, the side flow paths 261, 261 and the through holes 260, 260 each constitute a part of the drug container side flow path 214.

As described above, the medical device 200 of this embodiment includes a rotating member 241 constituting the rotating section 215, a cylindrical main body 242 in which the rotating member 241 is rotatably housed, and a packing member 243 housed non-rotatably in the cylindrical main body 242. The rotating member 241 includes a medical device connection section 211 at one end and a communication flow path 216 at the other end, the medical device side flow path 212 communicates between the medical device connection section 211 and the communication flow path 216, the packing member 243 includes a drug container side flow path 214 and abuts against the other end of the rotating member 241, and the rotating member 241 is rotatable in a state of abutment against the packing member 243 (bottom plate section 259).

The other end portion of the packing member 243 constitutes the drug container connection part 213. Specifically, as shown in FIG. 17, the drug container connection part 213 is a thick-walled tubular part extending downward (towards the other end) from the bottom plate part 259, the inside of which is in communication with the through holes 260, 260, and the other end opening opens into the drug container 30. The outer shape (outer diameter) of the drug container connection part 213 is equal to or slightly larger than the inner shape (inner diameter) of the opening 231 of the drug container 30. As a result, the drug container connection part 213 is attached liquid-tight to the opening 231 of the container body 232.

Next, we will explain the operation of connecting the medical device 20 and the drug container 30 in the drug container 202 with the medical device connector attached in this embodiment.

The medical instrument 20 of this embodiment is a syringe, and as shown in FIG. 18, includes a nozzle portion 221 connected to the tip of an outer tube main body portion 224. The medical instrument connection portion 211 of the medical device 200 (medical instrument connection tool 201) includes a nozzle portion attachment portion 244 to which the nozzle portion 221 can be attached.

More specifically, as shown in FIG. 18, the medical device 20 includes a nozzle portion 221 and a collar 223 that encases the nozzle portion 221 and has a screw portion 222, and the medical device connection portion 211 includes a nozzle portion mounting portion 244 and a connection mechanism side screw portion 245 that can be screwed with the screw portion 222 of the collar 223. The screw portion 222 of the medical device 20 and the connection mechanism side screw portion 245 of the medical device connection portion 211 are screwed together by rotating the medical device 20 in a predetermined direction (e.g., clockwise), and the flow path opening and closing mechanism is capable of completing the screwing between the screw portion 222 of the medical device 20 and the connection mechanism side screw portion 245 of the medical device connection portion 211 when the rotating portion 215 is in the communication position.

The medical device (syringe) 20 can be either one for extracting the drug 234 in the drug container 30 [one that does not contain a drug solution in advance (for extraction)] or one that contains a drug solution to be mixed with the drug 234 in the drug container 30 (for mixing).

In the initial state (as shown in FIG. 17) of the drug container 202 with the medical tool connector attached, the flow path opening and closing mechanism of the medical device 200 is in a non-communicating state. In other words, in the medical device 200, the communication flow path 216 of the rotating part 215 (rotating member 241) is not in communication with the drug container side flow path 214. Specifically, as shown in FIG. 20, in the non-communicating state of the flow path opening and closing mechanism of the medical device 200, the side openings 248, 248 of the rotating member 241 are not positioned in the side flow paths 261, 261 of the packing member 243, and the side openings 248, 248 of the rotating member 241 are blocked by the inner surface of the cylindrical storage section 258 of the packing member 243.

In the present embodiment, when connecting the medical tool 20 to the drug container 30 using the medical tool connector 201 including the medical device 200 with a flow path opening and closing mechanism in the drug container 202 with the medical tool connector attached, the protective cap 90 is removed, and the medical tool 20 is attached to the medical tool connection part 211 as shown in FIG. 18. Specifically, the nozzle part 221 of the medical tool 20 is inserted into the nozzle part attachment part 244 of the medical tool connection part 211, and the medical tool 20 is rotated in a predetermined direction (here, clockwise). This causes the screwing part 222 of the medical tool 20 to screw into the connection mechanism side screwing part 245 of the medical tool connection part 211.

The flow path opening and closing mechanism of the medical device 200 of this embodiment is provided with a rotation resistance imparting portion 262 that imparts resistance to the rotation of the rotating portion 215 (rotating member 241) in a predetermined direction (here, clockwise) from a non-communicating state. Specifically, as shown in FIG. 21, each protrusion storage portion 251 of the main body portion 219 (cylindrical main body portion 242) is formed with a rotation resistance imparting portion 262 that protrudes toward the inside (upward) of the protrusion storage portion 251. This allows the screwing of the screwing portion 222 of the medical tool 20 and the connection mechanism side screwing portion 245 of the medical tool connection portion 211 to proceed preferentially, rather than the rotation of the rotating portion 215 (rotating member 241) [rotation relative to the main body portion 219 (cylindrical main body portion 242) and the packing member 243].

When the screwing of the screwing portion 222 of the medical device 20 and the connection mechanism side screwing portion 245 of the medical device connection portion 211 (attachment of the nozzle 221 of the medical device 20 to the nozzle attachment portion 244 of the medical device connection portion 211) has progressed to a certain extent or has been completed, if the medical device 20 is further rotated in a predetermined direction (here, clockwise), the rotating portion 215 (rotating member 241) overcomes the rotation resistance (the protrusions 249, 249 ride on the rotation resistance imparting portions 262, 262) and rotates [rotates relative to the main body portion 219 (cylindrical main body portion 242) and the packing member 243] in conjunction with the rotation of the medical device 20.

When the medical device 20 attached to the medical device connection part 211 rotates, the rotating part 215 (rotating member 241) rotates in a predetermined direction, changing the position of the communication flow path 216, and the drug container side flow path 214 and the medical device side flow path 212 become a communication position in which they communicate with each other via the communication flow path 216. Specifically, as shown in Figures 19 and 22, in the communication position (communication state) of the flow path opening and closing mechanism, the side openings 248, 248 of the rotating member 241 face the side flow paths 261, 261 of the packing member 243, and the drug container side flow path 214 and the medical device side flow path 212 communicate with each other via the communication flow path 216.

That is, in the medical device 200 having the flow path opening and closing mechanism of this embodiment, as described above, the medical device side flow path 212 of the rotating member 241 extends from one end side (the medical device connection portion 211 side) of the rotating member 241 to the other end side and terminates within the rotating member 241, the communication flow path 216 communicates with the other end side of the medical device side flow path 212 and has side openings 248, 248 that open on the side of the rotating member 241, the packing member 243 has a cylindrical storage portion 258 that stores the other end portion of the rotating member 241 that has the communication flow path 216, and the drug container side flow path 214 has side flow paths 261, 261 that are formed on the inner surface of the cylindrical storage portion 258 and extend to the formation portion of the side openings 248, 248 of the rotating member 241. In the non-communicating state of the flow path opening/closing mechanism of the medical device 200, the side openings 248, 248 of the rotating member 241 are not positioned in the side flow paths 261, 261 of the packing member 243, and the side openings 248, 248 of the rotating member 241 are blocked by the inner surface of the cylindrical storage section 258 of the packing member 243. In the communicating position, the side openings 248, 248 of the rotating member 241 face the side flow paths 261, 261 of the packing member 243, and the drug container side flow path 214 and the medical device side flow path 212 are in communication with each other via the communication flow path 216.

The medical device 200 is provided with a rotation restriction section 217 that restricts the rotation of the rotating section 215 (rotating member 241) in a predetermined direction after the rotating section 215 (rotating member 241) reaches the communication position. Specifically, as shown in FIG. 23, the protrusions 249, 249 provided on the side of the rotating section 215 (rotating member 241) abut against the protrusion storage sections 251, 251 (more specifically, the inner wall surfaces of the ends of the protrusion storage sections 251, 251 in a predetermined direction), restricting the rotating section 215 (rotating member 241) from further rotating in the predetermined direction.

That is, the medical device 200 includes a main body 219 (cylindrical main body 242) that rotatably houses a rotating part 215 (rotating member 241), and the rotation restricting part 217 of the flow path opening and closing mechanism is composed of protrusions 249, 249 provided on the side of the rotating part 215 and protrusion storage parts 251, 251 that store the protrusions 249, 249 provided on the main body 219 and extend a predetermined length in the circumferential direction. When the rotating part 215 (rotating member 241) of the flow path opening and closing mechanism reaches a communicating position after rotating in a predetermined direction from a non-communicating state, the protrusions 249, 249 of the rotating part 215 abut against the protrusion storage parts 251, 251, and restrict further rotation of the rotating part 215 (rotating member 241) in the predetermined direction. This prevents the rotating part 215 (rotating member 241) from rotating beyond the communication position and returning to the non-communicating state (non-communicating position). In addition, by rotating the rotating part 215 (rotating member 241) in a specific direction (e.g., clockwise) until its rotation is restricted, it becomes clear that the rotating part 215 (rotating member 241) will reach the communication position (communicating state), improving operability.

In addition, in the flow path opening and closing mechanism of the medical device 200, when the rotating part 215 (rotating member 241) is in the communicating position (communicating state), the screwing part 222 of the medical tool 20 and the connection mechanism side screwing part 245 of the medical tool connection part 211 can be in a completed state. The screwing part 222 of the medical tool 20 and the connection mechanism side screwing part 245 of the medical tool connection part 211 may be completed before the rotation restriction part 217 functions (before the protrusions 249, 249 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 251, 251), or may be completed by applying a further rotation force in a predetermined direction to the medical tool 20 after the rotation restriction part 217 functions (after the protrusions 249, 249 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 251, 251).

By the above operation, the medical device 20 and the drug container 30 are connected so that they can communicate with each other. Specifically, the medical device 20 and the drug container 30 communicate with each other through the medical device side flow path 212, the communication flow path 216, the side openings 248, 248, and the drug container side flow path 214 (including the side flow paths 261, 261 and the through holes 260, 260).

In addition, in the drug container 202 with the medical tool connector attached in this embodiment, when the medical tool 20 is attached to the medical tool connector 201 (medical device 200), the flow path opening and closing mechanism can be changed from a connected state (connected position) to a non-connected position (non-connected state).

First, from the communication state shown in Figures 19 and 22, the medical device 20 is rotated in the direction opposite to the predetermined direction (counterclockwise in this case). At this time, due to the fact that the nozzle portion 221 of the medical device 20 is attached to the nozzle portion attachment portion 244 of the medical device connection portion 211 (in other words, the frictional force between the outer peripheral surface of the nozzle portion 221 and the inner peripheral surface of the nozzle portion attachment portion 244) and the screwing force (the force required to release the screwing) between the screwing portion 222 of the medical device 20 and the connection mechanism side screwing portion 245 of the medical device connection portion 211, the rotating portion 215 (rotating member 241) rotates in the direction opposite to the predetermined direction [rotates relative to the main body portion 219 (cylindrical main body portion 242) and the packing member 243] in conjunction with the rotation of the medical device 20. This causes the flow path opening and closing mechanism of the medical device 200 to transition from the communicating state shown in Figures 19 and 22 to the non-communicating position shown in Figures 18 and 20.

The rotation of the rotating part 215 (rotating member 241) in the direction opposite to the predetermined direction [rotation relative to the main body part 219 (cylindrical main body part 242) and the packing member 243] accompanying the rotation of the medical device 20 is restricted by the protrusions 249, 249 of the rotating part 215 (rotating member 241) abutting against the inner wall surface of the end of the protrusion storage part 251, 251 in the direction opposite to the predetermined direction, as shown in FIG. 21. In other words, the protrusions 249, 249 and the protrusion storage part 251, 251 also function as a second rotation restriction part that restricts the rotation of the rotating part 215 (rotating member 241) in the direction opposite to the predetermined direction after reaching the non-communicating position from the communicating state. This prevents the rotating part 215 (rotating member 241) from rotating beyond the non-communicating position and returning to the communicating state. In addition, by rotating the rotating part 215 (rotating member 241) in the opposite direction to the specified direction (e.g., counterclockwise) until its rotation is restricted, it becomes clear that the flow path opening and closing mechanism is in the non-communicating position (non-communicating state), improving operability.

In the medical device 200 of this embodiment, it is preferable that the presence of the rotation resistance imparting portion 262 prevents the attached state of the medical tool 20 from being released before the second rotation regulating portion functions [before the protrusions 249, 249 of the rotating portion 215 (rotating member 241) abut against the inner wall surface of the end portion of the protrusion storage portion 251, 251 in the opposite direction to the predetermined direction]. Therefore, it is preferable that the rotation resistance [force that prevents the rotation of the rotating portion 215 (rotating member 241) relative to the main body portion 219 (cylindrical main body portion 242)] imparted by the rotation resistance imparting portions 262, 262 is smaller than the force for releasing the attached state of the medical tool 20.

In addition, in the medical device 200, if the attached state of the medical instrument 20 is released before the second rotation restriction part functions, after removing the medical instrument 20, it is advisable to manually rotate the rotating part 215 (rotating member 241) until the protrusions 249, 249 abut against the inner wall surface at the end opposite to the specified direction of the protrusion storage part 251, 251.

In a medical device 200 having such a flow path opening and closing mechanism, and in a medical connector 201 and a drug container 202 with a medical connector attached that are equipped with the medical device 200, the connection state between the medical device 20 and the drug container 30 can be switched by shifting the flow path opening and closing mechanism from a non-communicating state or a communicating state to a communicating position or a non-communicating position as the medical device 20 rotates.

The medical device 200 may be used for a separately prepared drug container, rather than as a drug container 202 with a medical tool connector attached (prepared together with the drug container 30).

Figure 24 shows another embodiment of the medical device of the present invention (the medical tool connector provided therewith, and the drug container with the medical tool connector attached). In the medical device 200a (medical tool connector 201a, drug container with the medical tool connector attached 202a), the form of the communication flow path and the packing member is different from that of the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202). Note that the medical device 200a (medical tool connector 201a, drug container with the medical tool connector attached 202a) has a configuration substantially similar to that of the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202) unless otherwise specified, and such configurations are given the same names and symbols (sometimes with the suffix "a" added) and detailed explanations are omitted.

In the medical device 200a, the medical device side flow path 212 of the rotating member 241a extends from one end side to the other end side of the rotating member 241a, the communication flow path 216a communicates with the other end side of the medical device side flow path 212, and has a lateral flow path 263 that extends in the side direction of the rotating member 241a but does not reach the side, and the packing member 243a has through holes 260, 260 that communicate with the drug container side flow path 214, and in the non-communicating state, the rotating member The lateral flow path 263 of 241a is not positioned above the through holes 260, 260 of the packing member 243a, and the lateral flow path 263 of the rotating member 241a is blocked by the packing member 243a. In the communication position, the lateral flow path 263 of the rotating member 241a is positioned above the through holes 260, 260 of the packing member 243a, and the drug container side flow path 214 and the medical device side flow path 212 communicate with each other via the communication flow path 216a (lateral flow path 263).

The flow path structure in the medical device 200a of this embodiment is shown in FIG. 12 (disconnected state) and FIG. 13 (connected state), and is the same as that of the medical device 100a described above.
Specifically, in the medical device 200a, the communication flow path 216a (lateral flow path 263) does not reach the side surface of the rotating member 241a, and therefore does not open on the side surface of the rotating member 241a (the rotating member 241a does not have a side opening). Note that the communication flow path 216a (lateral flow path 263) may reach the side surface of the rotating member 241a. Also, the packing member 243a does not have a side flow path.

In this medical device 200a, the flow path opening and closing mechanism is also shifted from a non-communicating state [a state in which the communication flow path 216a (lateral flow path 263) is not in communication with the through hole 260] to a communicating position [a position in which the communication flow path 216a (lateral flow path 263) is in communication with the through hole 260] by the rotation of the rotating part 215 (rotating member 241a) in a predetermined direction accompanying the rotation of the medical instrument 20.

In such a medical device 200a (medical tool connector 201a, drug container with medical tool connector attached 202a), the shape of the rotating member 241a and packing member 243a is simpler than the rotating member 241 and packing member 243 of the medical device 200 (medical tool connector 201, drug container with medical tool connector attached 202) of the above-mentioned embodiment, so that the manufacturing cost can be reduced.

Figure 25 shows another embodiment of the medical device of the present invention (the medical tool connector having the same, and the drug container with the medical tool connector attached). The medical device 200b (medical tool connector 201b, drug container with the medical tool connector attached 202b) does not have a packing member, and the shape of the rotating member and the cylindrical main body is different from the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202). Unless otherwise specified, the medical device 200b (medical tool connector 201b, drug container with the medical tool connector attached 202b) has a configuration substantially similar to the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202), and such configurations are given the same names and symbols (sometimes with the suffix b) and detailed descriptions are omitted.

The medical device 200b includes a rotating member 241b constituting the rotating section 215, and a cylindrical main body 242b in which the rotating section 215 is rotatably housed. The rotating member 241b includes a medical device connection section 211 at one end and a communication flow path 216b at the other end. The medical device side flow path 212 communicates between the medical device connection section 211 and the communication flow path 216b. The cylindrical main body 242b includes a bottom plate 264 including a drug container side flow path 214b. The bottom plate 264 abuts against the other end of the rotating member 241b, and the rotating member 241b is rotatable in a state of abutment against the bottom plate 264.

Specifically, a disk-shaped bottom plate portion 264 is formed inside the axial center portion of the cylindrical main body portion 242b. Two through holes 265, 265 are formed in the bottom plate portion 264. The through holes 265, 265 form the drug container side flow path 214b.

A thick-walled cylindrical drug container connection part 213b is integrally provided on the other end side of the bottom plate part 264, extending downward (towards the other end). The inside of the drug container connection tool 213b is in communication with the through holes 265, 265, and the other end opening opens into the drug container 30. The outer shape (outer diameter) of the drug container connection part 213b is equal to or slightly larger than the inner shape (inner diameter) of the opening 231 of the drug container 30. As a result, the drug container connection part 213b is attached liquid-tight to the opening 231 of the container body 232.

In the medical device 200b, the communication flow path 216b (lateral flow path) does not reach the side of the rotating member 241b, and therefore does not open on the side of the rotating member 241b (the rotating member 241b does not have a side opening). In the medical device 200b, the flow path opening and closing mechanism is shifted from a non-communicating state (a state in which the communication flow path 216b does not communicate with the through hole 265) to a communicating position (a position in which the communication flow path 216b communicates with the through hole 265) by the rotation of the rotating part 215 (the rotating member 241b) in a predetermined direction accompanying the rotation of the medical instrument 20. In such a medical device 200b (medical tool connector 201b, drug container with medical tool connector attached 202b), the packing material can be omitted compared to the medical device 200 (medical tool connector 201, drug container with medical tool connector attached 202) of the above-mentioned embodiment, so manufacturing costs can be reduced.

26 and 27 show another embodiment of the medical device of the present invention (the medical tool connector having the same, and the drug container with the medical tool connector attached). In the medical device 200c (medical tool connector 201c, drug container with the medical tool connector attached 202c), the shape of the cylindrical main body and the packing member are different from those of the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202). Note that, unless otherwise specified, the medical device 200c (medical tool connector 201c, drug container with the medical tool connector attached 202c) has a configuration substantially similar to that of the above-mentioned medical device 200 (medical tool connector 201, drug container with the medical tool connector attached 202), and such configurations are given the same names and symbols (sometimes with a c at the end) and detailed descriptions are omitted.

The packing member 243c of the medical device 200c has four ventilation holes 271 formed in the axial center of the other end portion (medicinal container connector 213). As shown in FIG. 26, when the ventilation holes 271 are located above the opening 231 of the medical container 30, the medical device 200c can communicate between the inside and outside of the medical container 30 through the ventilation holes 271 (and the slits 254) (ventilated state).

A second engagement rib 272 is formed on the inner circumferential surface of the side plate portion 253 (second main body portion 268c) of the cylindrical main body portion 242c, below (toward the other end of) the engagement rib 269. By clamping the flange portion 38 of the drug container 30 between the engagement rib 269 and the second engagement rib 272, the medical device 200c can be maintained in the above-mentioned ventilated state [a state in which the inside and outside of the drug container 30 are in communication through the ventilation hole 271 (and slit 254)].

The medical device 200c can be pushed further into the drug container 30 from a state in which the flange portion 38 of the drug container 30 is sandwiched between the engagement rib 269 and the second engagement rib 272 (ventilated state), so that the flange portion 38 of the drug container 30 is sandwiched between the step portion 270 and the engagement rib 269 [a state in which the cylindrical main body portion 242c (second main body portion 268c) is engaged with the drug container 30] as shown in FIG. 27. At this time, the ventilation hole 271 is blocked by the inner surface of the opening 231 of the drug container 30.

Such a medical device 200c (medical tool connector 201c, drug container with medical tool connector attached 202c) can be suitably used, for example, when a freeze-dried drug is used as the drug. In that case, first, before attaching the medical tool connector 201c having the medical device 200c to the drug container 30, the target drug (target drug solution) 234a is stored in the container body 232.

Next, the medical device 200c (medical tool connector 201c) is attached to the drug container 30 containing the target drug so that the drug is in the above-mentioned ventilated state (see FIG. 26). The target drug is then freeze-dried in this ventilated state. At this time, moisture is released through the ventilation hole 271 (and the slit 254), and the drying of the target drug progresses. After the freeze-drying operation is completed (the target drug has become a freeze-dried agent), the medical device 200c (medical tool connector 201c) is pushed into the drug container 30, and the drug container 30 is sealed (see FIG. 27). This allows the manufacture of a drug container 202c with the medical tool connector attached, in which the freeze-dried agent is the drug 234b.

As shown in Figures 28 to 36, an embodiment of a medical device having a flow path opening and closing mechanism of the present invention and a medical tool connector including the same will be described. Note that in the medical device 300 of this embodiment and the medical tool connector 301 including the same, configurations that are substantially similar to those of the medical device 100 of the above-mentioned embodiment will use the same names and symbols (sometimes preceded by "3"), and detailed descriptions may be omitted.

29, the medical device 300 of the embodiment includes a main body 319 (cylindrical main body 342) having a hollow needle-shaped portion 318, a packing member 343 housed in the main body 319 (cylindrical main body 342), a rotating portion 315 (rotating member 341) that rotates within the packing member 343, and a cover member 374 that encases the hollow needle-shaped portion 318. Note that in the medical device 300 of this embodiment, a protective cap 90 may be attached to the rotating portion 315 (rotating member 341) in the same manner as in the medical device 200 described above.

The medical tool connector 301 and medical device 300 of this embodiment will be described in detail. As shown in FIG. 30, the rotating member 341 constituting the rotating part 315 of the medical device 300 in this embodiment has an outer shape that is cylindrical and extends in the axial direction (the vertical direction in FIG. 30) as a whole. The rotating member 341 is made of a hard or semi-hard resin material.

The rotating member 341 has a medical device connection part 311 at one end (the upper part in FIG. 30). The medical device connection part 311 has a nozzle part attachment part 344 and a connection mechanism side screw part 345. More specifically, the medical device connection part 311 has an inner tube part 346 and an outer tube part 347. The nozzle part attachment part 344 is formed by the inner peripheral surface of the inner tube part 346. The nozzle part 21 of the medical device 2 described below enters into the nozzle part attachment part 344. The outer peripheral surface of the nozzle part 21 and the nozzle part attachment part 344 (the inner peripheral surface of the inner tube part 346) are in liquid-tight contact.

The connection mechanism side screw portion 345 is formed on the outer peripheral surface of the inner tube portion 346. The connection mechanism side screw portion 345 can be screwed into the screw portion 22 of the collar 23 of the medical device 2 described below. The collar 23 of the medical device 2 described below is housed between the inner tube portion 346 (the outer peripheral surface of the inner tube portion 346) and the outer tube portion 347 (the inner peripheral surface of the outer tube portion 347).

Inside the rotating part 315 (rotating member 341), a medical device side flow path 312 is formed that communicates with the medical device connection part 311 (specifically, the inside of the inner tube part 346 of the medical device connection part 311). The medical device side flow path 312 extends from one end side to the other end side of the rotating member 341 (from the upper side to the lower side in FIG. 30) and terminates inside the rotating member 341.

The rotating part 315 (rotating member 341) has a communication flow path 316 at the other end that communicates with the medical device side flow path 312. The communication flow path 316 communicates with the other end side of the medical device side flow path 312. In other words, the medical device side flow path 312 communicates between the medical device connection part 311 and the communication flow path 316. As shown in Figures 33 and 35, the communication flow path 316 is a single flow path that communicates with the other end side of the medical device side flow path 312 at the lower inside of the rotating member 341 and penetrates the rotating member 341 in the radial direction. The communication flow path 316 has side openings 348, 348 that open on both opposing side surfaces of the rotating member 341.

As shown in Figures 34 and 36, two protrusions 349, 349 are provided in the axial center of the side surface of the rotating part 315 (the outer peripheral surface of the rotating member 341) so as to protrude in opposing directions. Also, as shown in Figure 30, two flanges 350, 350 are formed on the side surface of the rotating part 315, spaced apart in the axial direction and protruding outward around the entire circumference. When stored in the main body part 319 (cylindrical main body part 342), the flanges 350, 350 are rotatable while sliding against the inner surface of the main body part 319 (cylindrical main body part 342), and function as a guide to allow the rotating part 315 (rotating member 341) to rotate stably.

The rotating part 315 (rotating member 341) is rotatably housed in the main body 319 (cylindrical main body 342). The cylindrical main body 342 extends in the axial direction (vertical direction in FIG. 30) as a whole, and has a cylindrical shape with a larger diameter than the rotating member 341. The cylindrical main body 342 is made of a hard or semi-hard resin material. The cylindrical main body 342 has a bottom plate 373 formed at the other end, which closes the other end, and the bottom plate 373 communicates at the center with the hollow needle part 318 (internal flow path 356) described below.

30, 34 and 36, the side wall of the main body 319 (the side wall of the cylindrical main body 342) has a protrusion storage section 351, 351 extending in the circumferential direction for a predetermined length at the axial center. Each protrusion storage section 351 is a cutout that penetrates the side wall of the main body 319 (the cylindrical main body 342). The protrusion storage section 351, 351 is provided at a position corresponding to the protrusions 349, 349 provided on the rotating section 315 (the rotating member 341), and stores the protrusions 349, 349. In addition, each protrusion storage section 351 has a rotation resistance imparting section 362 that protrudes toward the inside of the protrusion storage section 351. The rotation resistance imparting section 362 is a protrusion that protrudes with approximately the same width and has a flat upper surface. The protrusion 349 of the rotating member 341 moves while sliding on this flat upper surface. The beginning of the rotation resistance imparting portion 362 is an inclined portion 362a that gradually becomes thicker toward the flat upper surface, guiding the protrusion 349 toward the flat upper surface.

As shown in FIG. 30, the medical device 300 (medical tool connector 301) includes a hollow needle-shaped portion 318. Specifically, the hollow needle-shaped portion 318 extends downward from the center of the other end (bottom plate portion 373) of the cylindrical main body portion 342. The hollow needle-shaped portion 318 enters a seal member made of an elastic material such as rubber or elastomer that seals the opening of the container body of the drug container to be connected, and includes a sharp tip portion 355 that can penetrate the seal member, an internal flow path 356 that communicates with the drug container side flow path 314 described later, and an opening 357 that communicates the inside (internal flow path 356) of the hollow needle-shaped portion 318 with the outside at the end (end on the other end side) of the internal flow path 356. The opening 357 is open on the side, making it difficult for foreign matter (fragments of the seal member, etc.) to enter when the hollow needle-shaped portion 318 penetrates the seal member. In this embodiment, the medical tool connector 301 (medical device 300) is equipped with a cover member 374 to protect the hollow needle portion 318.

30, 33 and 35, the packing member 343 is housed in the other end of the cylindrical main body 342 in a non-rotatable manner. The packing member 343 is made of a soft resin material or an elastic material such as rubber or elastomer. The packing member 343 has a cylindrical storage section 358 capable of housing the other end of the rotating member 341 having the communication flow path 316. The inner shape (inner diameter) of the cylindrical storage section 358 is set to be equal to or slightly smaller than the outer shape (outer diameter) of the other end of the rotating member 341. As a result, the inner circumferential surface of the cylindrical storage section 358 and the outer circumferential surface of the rotating member 341 are in liquid-tight contact with each other, while the rotating member 341 is allowed to rotate relative to the packing member 343. Also, as shown in FIG. 33, when the side openings 348, 348 of the rotating member 341 (communication flow path 316) are not positioned in the side flow paths 361, 361 of the packing member 343 described below, the side openings 348, 348 are liquid-tightly closed by the cylindrical storage portion 358.

As shown in FIG. 30, the other end of the packing member 343 is closed by the bottom plate portion 359. The lower surface (surface on the other end side) of the bottom plate portion 359 abuts against the upper surface (surface on one end side) of the bottom plate portion 373 of the cylindrical main body portion 342. The upper surface (surface on one end side) of the bottom plate portion 359 abuts against the other end of the rotating member 341. The rotating member 341 is rotatable while abutting against the packing member 343. Two through holes 360, 360 are formed in the bottom plate portion 359. The cylindrical storage portion 358 and the hollow needle-shaped portion 318 (internal flow path 356) are in communication with each other via the through holes 360, 360.

The packing member 343 has a drug container side flow path 314 (part or all). As shown in Figures 30, 33, and 35, the drug container side flow path 314 has side flow paths 361, 361 formed on the inner surface of the cylindrical storage section 358 and extending to the formation portion of the side openings 348, 348 of the rotating member 341. Specifically, each side flow path 361 is formed so as to gouge the inner surface of the cylindrical storage section 358, and the two side flow paths 361, 361 are formed at positions facing each other so as to correspond to the side openings 348, 348 of the rotating member 341. The side flow paths 361, 361 are respectively connected to the through holes 360, 360. In this embodiment, the side flow paths 361, 361 and the through holes 360, 360 each constitute a part of the drug container side flow path 314.

That is, the medical device 300 of this embodiment includes a rotating member 341 constituting a rotating section 315, a cylindrical main body 342 in which the rotating member 341 is rotatably housed, and a packing member 343 housed non-rotatably within the cylindrical main body 342. The rotating member 341 includes a medical device connection section 311 at one end and a communication flow path 316 at the other end, the medical device side flow path 312 communicates between the medical device connection section 311 and the communication flow path 316, the packing member 343 includes a drug container side flow path 314, and abuts against the other end of the rotating member 341, and the rotating member 341 is rotatable in a state of abutment against the packing member 343.

Next, an operation for connecting the medical instrument 2 and a drug container (not shown) using the medical instrument connector 301 including the medical device 300 including the flow path opening and closing mechanism of this embodiment will be described.
31 , the medical instrument 2 in this embodiment is a syringe, and includes a nozzle portion 21 connected to the tip portion of the outer tube main body portion 24. A medical instrument connection portion 311 of a medical device 300 (medical instrument connection instrument 301) includes a nozzle portion attachment portion 344 to which the nozzle portion 21 can be attached.

More specifically, as shown in FIG. 31, the medical device 2 includes a nozzle portion 21 and a collar 23 that encases the nozzle portion 21 and has a screw portion 22, and the medical device connection portion 311 includes a nozzle portion mounting portion 344 and a connection mechanism side screw portion 345 that can be screwed with the screw portion 22 of the collar 23. The screw portion 22 of the medical device 2 and the connection mechanism side screw portion 345 of the medical device connection portion 311 are screwed together by rotating the medical device 2 in a predetermined direction (e.g., clockwise), and the flow path opening and closing mechanism is capable of completing the screwing between the screw portion 22 of the medical device 2 and the connection mechanism side screw portion 345 of the medical device connection portion 311 when the rotating portion 315 is in the communication position.

The medical device (syringe) 2 can be either one for extracting the medicine from the medicine container [one that does not contain any medicine liquid beforehand (for extraction)] or one that contains a medicine liquid to be mixed with the medicine in the medicine container (for mixing).

In the medical tool connector 301, in the initial state (as shown in FIG. 30), the flow path opening and closing mechanism of the medical device 300 is in a non-communicating state. In other words, in the medical device 300, the communication flow path 316 of the rotating part 315 (rotating member 341) is not in communication with the drug container side flow path 314. Specifically, as shown in FIG. 33, in the non-communicating state of the flow path opening and closing mechanism of the medical device 300, the side openings 348, 348 of the rotating member 341 are not positioned in the side flow paths 361, 361 of the packing member 343, and the side openings 348, 348 of the rotating member 341 are blocked by the inner surface of the cylindrical storage section 358 of the packing member 343.

When connecting the medical tool 2 and the drug container (not shown) using the medical tool connector 301 including the medical device 300 including the flow path opening and closing mechanism of this embodiment, the cover member 374 is first removed to expose the hollow needle-shaped portion 318, and then the hollow needle-shaped portion 318 is penetrated through the seal member of the drug container to fix the medical tool connector 301 (medical device 300). Then, as shown in FIG. 31, the medical tool 2 is attached to the medical tool connection part 311. Specifically, the nozzle part 21 of the medical tool 2 is inserted into the nozzle part attachment part 344 (inside the inner cylinder part 346) of the medical tool connection part 311, and the medical tool 2 is rotated in a predetermined direction (here, clockwise). This causes the screwing part 22 of the medical tool 2 to be screwed into the connection mechanism side screwing part 345 of the medical tool connection part 311.

Here, the flow path opening and closing mechanism of the medical device 300 of this embodiment includes a rotation resistance imparting portion 362 that imparts resistance to rotation of the rotating portion 315 (rotating member 341) in a predetermined direction (here, clockwise) from the non-communicating state. Specifically, each protrusion storage portion 351 of the main body portion 319 (cylindrical main body portion 342) is formed with a rotation resistance imparting portion 362 that protrudes inward (upward) of the protrusion storage portion 351.
The rotation resistance portion allows the screwing of the screw portion 22 of the medical device 2 with the connection mechanism side screw portion 345 of the medical device connection portion 311 to proceed preferentially over the rotation of the rotating portion 315 (rotating member 341) [rotation relative to the main body portion 319 (cylindrical main body portion 342) and the packing member 343].

When the screwing portion 22 of the medical device 2 and the connection mechanism side screwing portion 345 of the medical device connection portion 311 (attachment of the nozzle 21 of the medical device 2 to the nozzle attachment portion 344 of the medical device connection portion 311) have progressed to a certain extent or have been completed, if the medical device 2 is further rotated in a predetermined direction (here, clockwise), the rotating portion 315 (rotating member 341) overcomes the rotation resistance (the protrusions 349, 349 overcome the rotation resistance imparting portions 362, 362) and rotates [rotates relative to the main body portion 319 (cylindrical main body portion 342) and the packing member 343] in conjunction with the rotation of the medical device 2.

When the medical device 2 attached to the medical device connection part 311 rotates, the rotating part 315 (rotating member 341) rotates in a predetermined direction, changing the position of the communication flow path 316, and the drug container side flow path 314 and the medical device side flow path 312 become in a communication position in which they communicate with each other via the communication flow path 316. Specifically, as shown in Figures 32 and 35, in the communication position (communication state) of the flow path opening and closing mechanism, the side openings 348, 348 of the rotating member 341 face the side flow paths 361, 361 of the packing member 343, and the drug container side flow path 314 and the medical device side flow path 312 communicate with each other via the communication flow path 316.

That is, in the medical device 300 having the flow path opening and closing mechanism of this embodiment, as described above, the medical device side flow path 312 of the rotating member 341 extends from one end side (the medical device connection portion 311 side) of the rotating member 341 to the other end side and terminates within the rotating member 341, the communication flow path 316 communicates with the other end side of the medical device side flow path 312 and has side openings 348, 348 that open on the side of the rotating member 341, the packing member 343 has a cylindrical storage portion 358 that stores the other end portion of the rotating member 341 that has the communication flow path 316, and the drug container side flow path 314 has side flow paths 361, 361 that are formed on the inner surface of the cylindrical storage portion 358 and extend to the formation portions of the side openings 348, 348 of the rotating member 341. In the non-communicating state of the flow path opening/closing mechanism of the medical device 300, the side openings 348, 348 of the rotating member 341 are not positioned in the side flow paths 361, 361 of the packing member 343, and the side openings 348, 348 of the rotating member 341 are blocked by the inner surface of the cylindrical storage section 358 of the packing member 343, and in the communicating position, the side openings 348, 348 of the rotating member 341 face the side flow paths 361, 361 of the packing member 343, and the drug container-side flow path 314 and the medical device-side flow path 312 communicate with each other via the communicating flow path 316. This allows the medical device 2 and the drug container to be connected so that they can communicate with each other. Specifically, the medical device 2 and the drug container communicate with each other through the medical device side flow path 312, the communication flow path 316, the side openings 348, 348, the drug container side flow path 314 (including the side flow paths 361, 361 and the through holes 360, 360), the internal flow path 356, and the opening 357.

The medical device 300 is provided with a rotation restriction section 317 that restricts the rotation of the rotating section 315 (rotating member 341) in a predetermined direction after the rotating section 315 (rotating member 341) reaches the communication position. Specifically, as shown in FIG. 36, the protrusions 349, 349 provided on the side of the rotating section 315 (rotating member 341) abut against the protrusion storage sections 351, 351 (more specifically, the inner wall surfaces of the ends of the protrusion storage sections 351, 351 in a predetermined direction), restricting the rotating section 315 (rotating member 341) from further rotating in the predetermined direction.

That is, the medical device 300 includes a main body 319 (cylindrical main body 342) that rotatably houses a rotating part 315 (rotating member 341), and the rotation restricting part 317 of the flow path opening and closing mechanism is composed of protrusions 349, 349 provided on the side of the rotating part 315 and protrusion storage parts 351, 351 that store the protrusions 349, 349 provided on the main body 319 and extend a predetermined length in the circumferential direction. When the rotating part 315 (rotating member 341) of the flow path opening and closing mechanism reaches a communicating position after rotating in a predetermined direction from a non-communicating state, the protrusions 349, 349 of the rotating part 315 abut against the protrusion storage parts 351, 351, and restrict further rotation of the rotating part 315 (rotating member 341) in the predetermined direction. This prevents the rotating part 315 (rotating member 341) from rotating beyond the communication position and returning to the non-communicating state (non-communicating position). In addition, by rotating the rotating part 315 (rotating member 341) in a specific direction (e.g., clockwise) until its rotation is restricted, it becomes clear that the rotating part 315 (rotating member 341) will reach the communication position (communicating state), improving operability.

In addition, in the flow path opening and closing mechanism of the medical device 300, when the rotating part 315 (rotating member 341) is in the communicating position (communicating state), the screwing part 22 of the medical device 2 and the connection mechanism side screwing part 345 of the medical device connection part 311 can be in a completed state. The screwing part 22 of the medical device 2 and the connection mechanism side screwing part 345 of the medical device connection part 311 may be completed before the rotation restriction part 317 functions (before the protrusions 349, 349 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 351, 351), or may be completed by applying a further rotation force in a predetermined direction to the medical device 2 after the rotation restriction part 317 functions (after the protrusions 349, 349 abut against the end inner wall surface in a predetermined direction of the protrusion storage part 351, 351).

In addition, in the medical device 300 (medical tool connector 301) of this embodiment, when the medical tool 2 is attached to the medical device 300, the flow path opening and closing mechanism can be changed from a connected state (connected position) to a non-connected position (non-connected state).

32 and 35, the medical device 2 is rotated in the opposite direction to the predetermined direction (counterclockwise in this case). At this time, the nozzle portion 21 of the medical device 2 is attached to the nozzle portion attachment portion 344 (inner cylindrical portion 346) of the medical device connection portion 311 (in other words, frictional force between the outer peripheral surface of the nozzle portion 21 and the inner peripheral surface of the nozzle portion attachment portion 344) and the screwing force (force required to release the screwing) between the screwing portion 22 of the medical device 2 and the connection mechanism side screwing portion 345 of the medical device connection portion 311 causes the rotating portion 315 (rotating member 341) to rotate in the opposite direction to the predetermined direction [rotating relative to the main body portion 319 (cylindrical main body portion 342) and the packing member 343] in conjunction with the rotation of the medical device 2. This causes the flow path opening and closing mechanism of the medical device 300 to transition from the communicating state shown in Figures 32 and 35 to the non-communicating position shown in Figures 31 and 33.

The rotation of the rotating part 315 (rotating member 341) in the direction opposite to the predetermined direction [rotation relative to the main body part 319 (cylindrical main body part 342) and the packing member 343] accompanying the rotation of the medical device 2 is restricted by the protrusions 349, 349 of the rotating part 315 (rotating member 341) abutting against the inner wall surface of the end of the protrusion storage part 351, 351 in the direction opposite to the predetermined direction, as shown in FIG. 34. In other words, the protrusions 349, 349 and the protrusion storage part 351, 351 also function as a second rotation restriction part that restricts the rotation of the rotating part 315 (rotating member 341) in the direction opposite to the predetermined direction after reaching the non-communicating position from the communicating state. This prevents the rotating part 315 (rotating member 341) from rotating beyond the non-communicating position and returning to the communicating state. Furthermore, by rotating the rotating part 315 (rotating member 341) in the opposite direction to the specified direction (e.g., counterclockwise) until its rotation is restricted, it becomes clear that the flow path opening and closing mechanism is in the non-communicating position (non-communicating state), improving operability.

In the medical device 300 of this embodiment, due to the presence of the rotation resistance imparting portion 362, the attached state of the medical device 2 may be released before the second rotation regulating portion functions [before the protrusions 349, 349 of the rotating portion 315 (rotating member 341) abut against the inner wall surface of the end portion in the opposite direction to the specified direction of the protrusion storage portion 351, 351]. Therefore, it is preferable that the rotation resistance [force that prevents the rotation of the rotating portion 315 (rotating member 341) relative to the main body portion 319 (cylindrical main body portion 342)] imparted by the rotation resistance imparting portions 362, 362 is smaller than the force for releasing the attached state of the medical device 2.

In addition, in the medical device 300, if the attached state of the medical instrument 2 is released before the second rotation restriction part functions, after removing the medical instrument 2, it is advisable to manually rotate the rotating part 315 (rotating member 341) until the protrusions 349, 349 abut against the inner wall surface at the end opposite to the specified direction of the protrusion storage parts 351, 351.

In such a medical device 300 and a medical connection tool 301 including the medical device 300, the connection state between the medical tool 2 and the drug container can be switched by shifting the flow path opening and closing mechanism from a non-communicating or communicating state to a communicating or non-communicating position as the medical tool 2 rotates. In other words, even when the medical tool 2 and the drug container are connected multiple times, there is no need to penetrate the hollow needle-shaped portion 318 multiple times through the sealing member. This makes it possible to prevent deterioration or damage to the sealing member, and the resulting entry of foreign matter.

Figure 37 shows another embodiment of the medical device (and medical implement connector having the same) of the present invention. In medical device 300a (medical implement connector 301a), the shape of the communication flow path and the packing member is different from that of medical device 300 (medical implement connector 301) described above. Unless otherwise specified, medical device 300a (medical implement connector 301a) has substantially the same configuration as medical device 300 (medical implement connector 301) described above, and such configuration will be given the same names and symbols (sometimes with an "a" at the end) and detailed description will be omitted.

The flow path structure in the medical device 300a of this embodiment is shown in FIG. 12 (disconnected state) and FIG. 13 (connected state), and is the same as that of the medical device 100a described above.
Specifically, in the medical device 300a, the communication flow path 316a (lateral flow path 363) does not reach the side surface of the rotating member 341a, and therefore does not open on the side surface of the rotating member 341a (the rotating member 341a does not have a side opening). Note that the communication flow path 316a (lateral flow path 363) may reach the side surface of the rotating member 341a. Also, the packing member 343a does not have a side flow path.

In this medical device 300a, the medical device side flow path 312 of the rotating member 341a extends from one end side to the other end side of the rotating member 341a, the communication flow path 316a communicates with the other end side of the medical device side flow path 312, and has a lateral flow path 363 that extends in the side direction of the rotating member 341a but does not reach the side, and the packing member 343a has through holes 360, 360 that communicate with the drug container side flow path 314, and in the non-communicating state, the rotating member The lateral flow path 363 of the rotating member 341a is not positioned above the through holes 360, 360 of the packing member 343a, and the lateral flow path 363 of the rotating member 341a is blocked by the packing member 343a. In the communication position, the lateral flow path 363 of the rotating member 341a is positioned above the through holes 360, 360 of the packing member 343a, and the drug container side flow path 314 and the medical device side flow path 312 are in communication via the communication flow path 316a (lateral flow path 363).

Specifically, in the medical device 300a, the communication flow path 316a (lateral flow path 363) does not reach the side surface of the rotating member 341a, and therefore does not open on the side surface of the rotating member 341a (the rotating member 341a does not have a side opening). Also, the packing member 343a does not have a side flow path.
In such a medical device 300a, the flow path opening and closing mechanism is also adapted to move from a non-communicating state [a state in which the communication flow path 316a (lateral flow path 363) is not connected to the through hole 360] to a communicating position [a position in which the communication flow path 316a (lateral flow path 363) is connected to the through hole 360] by rotating the rotating part 315 (rotating member 341a) in a predetermined direction in association with the rotation of the medical instrument 2.

In such a medical device 300a (medical tool connector 301a), the shape of the rotating member 341a and the packing member 343a is simpler than that of the rotating member 341 and the packing member 343 of the medical device 300 (medical tool connector 301) of the above-mentioned embodiment, so that the manufacturing cost can be reduced.

Figure 38 shows another embodiment of the medical device of the present invention. In medical device 300b (medical tool connector 301b), a packing member is not provided, and the shape of the rotating member and the cylindrical main body is different from that of the above-mentioned medical device 300 (medical tool connector 301). Unless otherwise specified, medical device 300b (medical tool connector 301b) has a configuration substantially similar to that of the above-mentioned medical device 300 (medical tool connector 301), and such configurations are given the same names and symbols (sometimes with the suffix b) and detailed explanations are omitted.

The medical device 300b includes a rotating member 341b constituting the rotating section 315, and a cylindrical main body 342b that rotatably houses the rotating section 315. The rotating member 341b includes a medical device connection section 311 at one end and a communication flow path 316b at the other end. The medical device side flow path 312 communicates between the medical device connection section 311 and the communication flow path 316b. The cylindrical main body 342b includes a bottom plate 364 that includes a drug container side flow path 314b. The bottom plate 364 abuts against the other end of the rotating member 341b, and the rotating member 341b is rotatable while abutting against the bottom plate 364.

Specifically, a disk-shaped bottom plate portion 364 is formed at the other end of the cylindrical main body portion 342b so as to close the other end. The bottom plate portion 364 is integrated with the bottom plate portion 373 (in other words, a thick disk-shaped portion is formed at the other end of the cylindrical main body portion 342b by integrating the bottom plate portion 364 and the bottom plate portion 373). At the center portion in the radial direction, a gap 366 is formed between the bottom plate portion 364 and the bottom plate portion 373. Two through holes 365, 365 are formed in the bottom plate portion 364. The through holes 365, 365 constitute the drug container side flow path 314b.

In the medical device 300b, the communication flow path 316b (lateral flow path) does not reach the side of the rotating member 341b, and therefore does not open on the side of the rotating member 341b (the rotating member 341b does not have a side opening). In the medical device 300b, the flow path opening and closing mechanism is shifted from a non-communicating state (a state in which the communication flow path 316b does not communicate with the through hole 365) to a communicating position (a position in which the communication flow path 316b communicates with the through hole 365) by the rotation of the rotating part 315 (rotating member 341b) in a predetermined direction accompanying the rotation of the medical device 2. In such a medical device 300b (medical device connector 301b), the packing member can be omitted compared to the medical device 300 (medical device connector 301) of the above-mentioned embodiment, and therefore the manufacturing cost can be reduced.

In FIG. 38, the hollow needle portion 318 is shown as being integral with the cylindrical main body portion 342b, but in order to form the gap 366, the hollow needle portion 318 may be molded as a separate body and then attached to the cylindrical main body portion 342b by a method such as welding.

100, 200, 300 Medical device 101, 201, 301 Medical tool connector 102 Drug container kit 202 Drug container 2, 20 with medical tool connector attached Medical tool 3, 30 Drug container 11, 211, 311 Medical tool connector 12, 212, 312 Medical tool side flow path 13, 213, 313 Drug container connector 14, 214, 314 Drug container side flow path 15, 215, 315 Rotating part 16, 216, 316 Communication flow path 19, 219, 319 Main body 41, 241, 341 Rotating member 42, 242, 342 Cylindrical main body 43, 243, 343 Packing member

Claims (12)

A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device having a flow path opening and closing mechanism is further characterized in that the flow path opening and closing mechanism is provided with a rotation resistance imparting portion that imparts resistance to rotation of the rotating portion from the non-communicating state in the specified direction . A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device includes a main body portion that rotatably houses the rotating portion, and the rotation regulating portion of the flow path opening and closing mechanism is composed of a protrusion provided on a side of the rotating portion and a protrusion storage portion that stores the protrusion provided on the main body portion and extends a predetermined length in the circumferential direction, and when the protrusion of the rotating portion rotates from the non-communicating state in the predetermined direction and reaches the communicating position, it abuts against the protrusion storage portion, thereby regulating further rotation in the predetermined direction. A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device includes a rotating member constituting the rotating portion, a cylindrical main body portion rotatably housing the rotating member, and a packing member non-rotatably housed within the cylindrical main body portion,
a medical device having a flow path opening and closing mechanism, wherein the rotating member has the medical device connection portion at one end and the communicating flow path at the other end, the medical device side flow path connects the medical device connection portion and the communicating flow path, the packing member has the drug container side flow path and abuts against the other end of the rotating member, and the rotating member is capable of rotating while abutting against the packing member. the medical device side flow path of the rotating member extends from the one end side to the other end side of the rotating member and terminates within the rotating member,
the communication flow path communicates with the other end of the medical device flow path and has a side opening that opens on a side surface of the rotating member,
4. A medical device with a flow path opening and closing mechanism as described in claim 3, wherein the packing member has a cylindrical storage section that stores the other end of the rotating member having the communicating flow path, and the drug container side flow path has a side flow path formed on the inner surface of the cylindrical storage section and extending to the formation section of the side opening of the rotating member, and in the non-communicating state, the side opening of the rotating member is not positioned at the side flow path of the packing member and the side opening of the rotating member is blocked by the inner surface of the cylindrical storage section of the packing member, and in the communicating position, the side opening of the rotating member faces the side flow path of the packing member, and the drug container side flow path and the medical device side flow path are connected via the communicating flow path. 4. A medical device with a flow path opening and closing mechanism as described in claim 3, wherein the medical device side flow path of the rotating member extends from the one end side to the other end side of the rotating member, the communicating flow path communicates with the other end side of the medical device side flow path and comprises a lateral flow path extending in a lateral direction of the rotating member, and the packing member has a through hole communicating with the drug container side flow path, and in the non-communicating state, the lateral flow path of the rotating member is not located on the through hole of the packing member and the lateral flow path of the rotating member is blocked by the packing member, and in the communicating position, the lateral flow path of the rotating member is located on the through hole of the packing member and the drug container side flow path and the medical device side flow path communicate with each other via the communicating flow path. A medical device used to connect a medical instrument and a drug container, the medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state,
the medical device includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section;
the flow path opening and closing mechanism includes a rotating part that rotates in association with rotation of the medical device attached to the medical device connection part, the rotating part being in communication with the medical device side flow path and being in communication with the drug container side flow path,
the flow path opening and closing mechanism is provided with a rotation restriction part that restricts rotation in the predetermined direction from a non-communicating state in which the communication flow path of the rotating part is not in communication with the drug container side flow path, so that a position of the communication flow path changes to a communicating position in which the drug container side flow path and the medical device side flow path are in communication with each other via the communication flow path,
The medical device includes a rotating member constituting the rotating portion and a cylindrical main body portion rotatably housing the rotating portion,
a medical device having a flow path opening and closing mechanism, characterized in that the rotating member has the medical device connection portion at one end and the communicating flow path at the other end, the medical device side flow path connects the medical device connection portion and the communicating flow path, the cylindrical main body has a bottom plate portion having the drug container side flow path, the bottom plate portion abuts against the other end of the rotating member, and the rotating member is capable of rotating while abutting against the bottom plate portion. The medical device having a flow path opening and closing mechanism according to claim 1 , wherein the medical implement comprises a nozzle portion, and the medical implement connection portion comprises a nozzle portion mounting portion. 7. A medical device having a flow path opening and closing mechanism as described in any one of claims 1 to 6, wherein the medical device comprises a nozzle portion and a collar that covers the nozzle portion and has a screw portion, the medical device connection portion has a nozzle portion mounting portion and a connection mechanism side screw portion that can be screwed with the screw portion of the collar, and the screw portion of the medical device and the connection mechanism side screw portion of the medical device connection portion progress in screwing with each other by rotating the medical device in the predetermined direction, and further, the flow path opening and closing mechanism is capable of completing the screwing between the screw portion of the medical device and the connection mechanism side screw portion of the medical device connection portion when the rotating portion is located at the communicating position (communicating state). A medical instrument connector comprising a medical device having the flow path opening and closing mechanism according to any one of claims 1 to 8 ,
the medical implement connector connects the drug container, which has a container body having an opening, a seal member for sealing the opening of the container body, and a drug contained in the container body, to the medical implement;
The medicine container connection portion of the medical implement connector is provided with a hollow needle-shaped portion capable of penetrating the seal member of the medicine container and communicating with the medicine container-side flow path. A drug container kit comprising: a medical instrument connector including a medical device having the flow path opening and closing mechanism according to any one of claims 1 to 8 ; and the drug container,
the medical implement connector connects the drug container, which has a container body having an opening, a seal member for sealing the opening of the container body, and a drug contained in the container body, to the medical implement;
A medicine container kit, wherein the medicine container connection portion of the medical instrument connection tool is provided with a hollow needle-shaped portion capable of penetrating the seal member of the medicine container and communicating with the medicine container-side flow path. A medical tool connector equipped with a medical tool container, the medical tool connector including a medical device having a flow path opening and closing mechanism capable of switching between a communication state and a non-communication state , and the medical tool container equipped with the medical tool connector,
The medical device of the medical implement connector includes a medical implement connection section to which the medical implement can be attached, a medical implement side flow path communicating with the medical implement connection section, a medicine container connection section connectable to the medicine container, and a medicine container side flow path communicating with the medicine container connection section,
the flow path opening and closing mechanism of the medical device comprises a rotating part that rotates in association with the rotation of the medical tool attached to the medical tool connection part, the rotating part comprising a communication flow path that communicates with the medical tool side flow path and is capable of communicating with the drug container side flow path, the flow path opening and closing mechanism further comprises a rotation restricting part that restricts rotation in the predetermined direction after the communication position is reached, the communication flow path of the rotating part being in a non-communicating state where the communication flow path of the rotating part does not communicate with the drug container side flow path, the position of the communication flow path being changed by rotating the rotating part in a predetermined direction, the communication flow path being in a communicating position where the drug container side flow path and the medical tool side flow path are in communication via the communication flow path,
The drug container has a container body having an opening and a drug contained in the container body,
A medicine container with a medical tool connector attached thereto, characterized in that the medicine container connection portion of the medical tool connector is liquid-tightly attached to the opening of the container body. A medical implement connector-attached drug container comprising: a medical implement connector having a medical device having the flow path opening and closing mechanism according to any one of claims 1 to 8; and the drug container to which the medical implement connector is attached,
The drug container has a container body having an opening and a drug contained in the container body,
A medicine container with a medical tool connector attached thereto, characterized in that the medicine container connection portion of the medical tool connector is liquid-tightly attached to the opening of the container body.

Images