JP5277857B2 - Blood collection instrument - Google Patents

Abstract

The invention provides a hemostix, which can apply the general opening apparatus for sheet type hemostixes, and can prevent the pollution caused by blood when opening by hand. A blood collection tube (10) comprises a main tube body (11) with an open end (20), a piece (12) for closing the open end (20), a rubber sheet (13) laminated on the piece (12) and a cover (14); wherein, the rubber sheet (13) and part of the piece (12) is exposed from the opening (24) of a top board (22); the top board is jointed with the piece (12); the cover (14) is embedded outside the open end (20) of the main tube body (11); and the sealing intensity between the open end (20) and the piece (12) of the main tube body (11) is lower than that of between the piece (12) and the top board (22) of the cover (14).

Description

  The present invention relates to a blood collection device for storing blood collected in a container.

  Conventionally, blood is collected from a living body such as a human for the purpose of diagnosis and the like, and analysis of various components in the blood has been performed as a blood test. In order to collect blood from a living body, a blood collection device called a blood collection tube is used in addition to a syringe. This blood collection tube is mainly a tube-shaped container that is airtightly closed by a rubber stopper or the like. The internal space of the container closed by the rubber stopper is kept in a reduced pressure state relative to the atmospheric pressure. Further, if necessary, a medicine such as a serum separating agent or a coagulant is sealed in the container. When the blood collection tube is attached to the blood collection needle holder to which the blood collection needle is attached, the blood collection needle passes through the rubber stopper, and the blood of the living body is sucked through the blood collection needle into the internal space of the reduced pressure state. When an appropriate amount of blood is drawn into the container, the blood collection tube is removed from the blood collection needle holder. When the blood collection tube is removed, the blood collection needle is pulled out from the rubber stopper, and the puncture passage by the blood collection needle is sealed in a liquid-tight manner by the elasticity of the rubber. After blood collection, the blood collection tube is subjected to a process such as centrifugation as it is and then opened, blood or serum in the blood collection tube is collected, and various blood tests are performed (Patent Document 1).

  Among the blood collection tubes described above, there is a type in which a container is hermetically closed using a gas barrier film instead of a rubber stopper. A rubber piece is attached to a part of the film in order to ensure liquid-tightness after the needle is removed. A blood collection needle penetrates the rubber piece, and blood is sucked into the container through the blood collection needle as described above. Moreover, after processing, such as centrifugation, a container is opened by peeling a film, and the blood or serum in a container is extract | collected (patent document 2).

  The blood collection tube described above includes a type of blood collection tube in which a rubber plug is covered with a tube-shaped covering. This covering body covers the boundary portion between the rubber stopper and the container. When the rubber plug is removed and opened, a gap is created at the boundary between the rubber plug and the container, and the outside air flows into the container. There is a risk that blood splashes from the gap to the outside, but since the covering covers the boundary between the rubber stopper and the container, the blood splash adheres to the inner surface side of the covering. Thereby, the splashed blood splash does not contaminate the operator's hand and the surrounding environment (Patent Document 3).

  In addition, there is a type of blood collection tube in which a skirt portion covering the outer periphery of the container is provided at the flange portion of the rubber stopper. Also in this blood collection tube, the blood splash that has jumped out of the container when removing the rubber stopper adheres to the inner surface side of the skirt portion, so that the splashed blood splash does not contaminate the operator's hand or the surrounding environment ( Patent Document 4).

  There is also a type of blood collection tube in which the boundary between the rubber stopper and the container is covered with a film. When the rubber stopper is removed, the film is partially broken by being twisted with respect to the container together with the rubber stopper. When the rubber stopper is removed, the blood splash that has jumped out of the container adheres to the inner surface of the film, so that the splashed blood splash does not contaminate the operator's hand or the surrounding environment (Patent Document 5).

  Some of the blood collection tubes described above have a sheet stretched on the upper surface of a rubber stopper. Whether the sheet has been used or sterilized can be determined based on the presence or absence of the sheet and whether or not there is a trace of a needle stuck in the sheet (Patent Document 6).

  In addition, in some of the blood collection tubes described above, the opening of the tubular container is hermetically closed with a sheet member, and a cover member is provided on the outer surface of the sheet member. The cover member is twisted with respect to the tubular container to break the sheet member, and is fitted to the opening of the tubular container after the sheet member is broken. As a result, the tubular container can be closed again with the cover member even after the blood collection tube that is airtightly closed with the sheet member is opened instead of the rubber stopper (Patent Document 7).

  Further, there has been proposed an opening device that opens a blood collection tube in which a container is airtightly closed by a sheet after blood collection. This plugging device opens a blood collection tube by inserting a rubber piece or the like attached to a sheet of the blood collection tube with a holding pin, and then a punching cutter punching around the rubber piece (Patent Document 8). .

JP-A-8-322819 JP 2005-261965 A JP-A-8-145987 JP 2001-276023 A JP 2002-587 A Japanese Patent Laying-Open No. 2005-296122 Japanese Patent No. 3533023 JP 2008-184168 A

  Among the blood collection tubes described above, the type in which the container is hermetically closed with a rubber stopper is advantageous in that after collecting blood from the container, the container can be closed again with the rubber stopper to store the remaining blood. There is. On the other hand, although there is a device that automatically opens the rubber stopper of the blood collection tube, most of the opening devices introduced in facilities such as hospitals and examination centers punch a sheet as disclosed in Patent Document 8. In a facility where such a so-called sheet-type blood collection tube opener is introduced, another opener is used to automate the opening of the rubber plug-type blood collection tube. There is a problem that the cost for opening a large amount of rubber stopper type blood collection tubes is high.

  On the other hand, the sheet-type blood collection tube can be automatically opened using the opening device already installed in many facilities. Further, since the seal can be manually opened by peeling off the seal by hand, it can be immediately adopted even in a facility where no plug opening device is introduced. However, when the seal is peeled off, there is a drawback that blood adhering to the sheet easily adheres to the operator's hand. Moreover, when peeling a sheet | seat, there also exists a fault that a blood droplet may fly out as mentioned above from the clearance gap between a sheet | seat and a container.

  According to the blood collection tube disclosed in Patent Document 7, the cover member attached to the outer surface of the sheet member is formed into a double cylinder shape, so that blood splashes ejected at the time of opening are attached to the inner surface of the cover member. It is possible to prevent the worker and the surrounding environment from being contaminated with blood. However, in order to allow the cover member to be fitted to the tubular container, it is necessary to provide a fitting allowance that contacts the inner surface of the tubular container. Therefore, as shown in each drawing of Patent Document 7, the cover member largely protrudes outward in the axial direction from the sheet member. If it does so, even if it mounts | wears with the blood-collecting needle holder used widely, there exists a possibility that a blood-collecting needle may not reach a sheet | seat member, Therefore It becomes necessary to use a dedicated blood-collecting needle holder or a blood-collecting needle. Similarly, if the cover member protrudes largely outward in the axial direction from the sheet member, there may be a problem that the already opened stopper device cannot be used.

  Further, in order to manually open the blood collection tube disclosed in Patent Document 7, by twisting the cover member, a shearing force is applied to the sheet member twisted together with the cover member, and the sheet member is broken. Opens the tubular container. However, it is difficult to cause such a shearing force to act uniformly on the sheet member and to break the sheet member uniformly along the periphery of the cover member. As a result, for example, a sheet member that is not completely broken remains partially, and a part of the sheet member needs to be peeled off from the tubular container, and blood may adhere to the operator's hand during the operation. . Moreover, there exists a possibility that the fragment of a sheet | seat member will arise and the fragment may mix in the blood in a tubular container.

  The present invention has been made in view of these circumstances, and an object of the present invention is to be able to use an opening device that is widely used for sheet-type blood collection instruments, and when opening manually. An object of the present invention is to provide a blood collection device that is unlikely to be contaminated with blood.

  In addition, another object of the present invention is to use an opening device that is widely used for sheet-type blood collection instruments, which is unlikely to cause blood contamination when manually opened, and that can be opened manually. An object of the present invention is to provide a blood collection device that can be closed again after being plugged.

  (1) A blood collection device according to the present invention has a first end opened, a container capable of storing blood in an internal space, a sheet bonded to the first end of the container and closing the opening, From the first surface that is the outside of the container in the sheet, the needle puncture piece laminated so that the first surface is exposed around the first surface, the top plate in which the opening is formed, and the top plate A body portion extending along the outer surface of the container, the needle stab piece and a part of the first surface of the sheet are exposed to the outside from the opening of the top plate, and the top plate is A cap joined to the first surface and externally fitted to the first end of the container, wherein the seal strength between the container and the sheet is weaker than the seal strength between the sheet and the cap. is there.

  The blood collection device according to the present invention is, for example, attached to a well-known blood collection needle holder, and collects blood in the internal space of the container through the blood collection needle when the blood collection needle penetrates the needle puncture piece and the sheet. . A sheet is joined to the first end of the container, and the opening of the container is closed in a liquid-tight manner. A needle stick piece is laminated on the first surface of the sheet. The outer shape of the needle stick piece is smaller than the outer shape of the sheet. Therefore, the sheet also has a first surface on which the needlestick pieces are not stacked in a state where the needlestick pieces are stacked on the first surface. A cap is fitted to the container at the first end from above the sheet. The top plate of the cap abuts against the first end of the container from the upper side of the sheet, and the trunk portion covers a part of the outer surface of the container near the first end. From the opening formed in the top plate of the cap, the needle stick piece and a part of the first surface of the sheet are exposed to the outside. Therefore, the opening cutter of the opening device can contact the sheet through the opening of the cap and punch the sheet.

  The top plate of the cap is joined to the first surface of the sheet. The sealing strength between the container and the sheet is weaker than the sealing strength between the sheet and the cap. Therefore, when the cap fitted on the first end of the container is removed from the container, the sheet is peeled off from the container before the sheet is peeled off from the top plate of the cap. Thereby, the operator can peel the sheet from the container and open the container without directly contacting the sheet.

  The “seal strength” in the present invention is quantified by, for example, a measurement value measured according to the seat heel strength (7. Heat seal strength test of bags) according to JIS Z 0238, and is compared objectively. be able to. Therefore, if the “seal strength” is in a strong or weak relationship, the bonding between the container and the sheet and the bonding between the sheet and the cap are performed by welding such as thermal clothes or ultrasonic clothes, bonding with an adhesive, easy peel, etc. Any combination of known joining methods may be employed.

  (2) Joining of the container and the sheet may be realized by easy peel.

  Easy peel is a known sealing technique used in food packaging and the like. Easy peel is classified into interfacial peeling, cohesive peeling, and delamination depending on the peeling form. In the interfacial peeling, for example, an ethylene vinyl alcohol resin to which an adhesive is added is employed as the peel layer, and the peel strength is adjusted depending on the type of the adhesive. In the cohesive peeling, for example, a polymer blend of polypropylene, polyethylene and other resins is adopted as the peel layer, and the peel strength is adjusted by controlling the cohesive force in the polymer blend. In the delamination, an intermediate layer is provided between the support layer and the adhesive layer, and the peel strength is adjusted by adjusting the interlayer adhesive force between the adhesive layer and the intermediate layer. As the peel strength, for example, a peel strength having a measurement value measured in accordance with the above-described sheet heel strength according to JIS Z 0238 in the range of 1 to 15 N / 15 mm is referred to as easy peel. The bonding between the container and the sheet is realized by easy peel, and the bonding between the sheet and the cap is realized by other welding or bonding, so that the sealing strength between the container and the sheet is weaker than the sealing strength between the sheet and the cap. can do.

  (3) The barrel portion of the cap may have a cylindrical shape along the outer surface of the container.

  Therefore, the boundary between the container and the sheet is covered by the body of the cap. When the container is opened as described above, the cap does not need to be completely removed from the first end of the container. For example, the cap is removed to the extent that it slightly lifts from the container or is twisted relative to the container. You just have to be. That is, the boundary between the sheet and the container may remain covered by the cap body. Therefore, even when the blood in the container scatters from the gap between the container and the sheet when the sheet is peeled from the container, the scattered blood droplets adhere to the inner surface of the body of the cap. The surrounding environment is not contaminated with blood droplets.

  (4) The sheet may be sandwiched between the first end of the container and the top plate of the cap, and the sandwiched portion may be joined to the container and the top plate, respectively.

  When opening the cap, for example, when the cap is pushed up so as to slightly lift from the container, the region where the container and the sheet are joined and the region where the sheet and the cap are joined are along the direction in which the cap moves. Will be lined up. Therefore, a shearing force in a direction perpendicular to the first surface is hardly generated on the sheet. Further, for example, when the cap is removed so as to be twisted with respect to the container, the sheet rotates together with the top plate of the cap while being sandwiched between the first end of the container and the top plate of the cap. A shear force in a direction perpendicular to the surface is hardly generated on the sheet. Therefore, when the cap is removed from the container, the sheet is peeled from the container without breaking the sheet.

  (5) The needle stick piece may be disposed inside the opening of the first end in a state where the sheet is bonded to the first end of the container.

  Thereby, the opening cutter of the opening apparatus can punch out parts other than the needle stick piece in the sheet.

  (6) The exposed portion of the sheet exposed by the opening of the top plate of the cap fitted to the first end of the container, and at least a portion of the first surface of the sheet around the needle puncture piece All of the may be included.

  As a result, the opening cutter can punch the sheet around the needle stick piece while the holding pin of the opening device has pierced the needle stick piece.

  (7) The container may have its inner space hermetically held by the sheet, and the inner space may be in a depressurized state with respect to atmospheric pressure.

  For example, the internal space of the container is maintained in a reduced pressure state for a long time by the gas barrier sheet. As a result, a blood collection instrument having a reduced internal space is realized in a simple and inexpensive manner.

(8) A blood collection device according to the present invention has a first end that is open and is capable of storing blood in an internal space, is fitted to the first end of the container, and has an opening at the first end. A first surface is exposed at a periphery of a cap formed with a continuous opening, a sheet bonded to the cap to close the opening of the cap, and a first surface of the sheet that is outside the cap. And needle stick pieces stacked as described above. The cap has a top plate in which the opening is formed, and a body portion that extends from the periphery of the top plate. The body portion is provided with a bulging portion that bulges to the inner surface side on the top plate side and press-contacts with the outer surface of the container, and does not press-contact the outer surface of the container on the distal end side and has an inner diameter larger than the outer diameter of the container. A large tip is provided. The tip end side of the bulging portion has a taper shape whose diameter increases toward the tip end portion.

  The blood collection device according to the present invention is, for example, attached to a well-known blood collection needle holder, and collects blood in the internal space of the container through the blood collection needle when the blood collection needle penetrates the needle puncture piece and the sheet. . A cap is fitted to the first end of the container. The fitting part of the cap and the container is liquid-tight. The cap covers a first end of the container and a portion near the first end on the outer surface of the container. The cap has an opening continuous with the opening at the first end of the container. That is, in a state where the cap is fitted to the first end of the container, the first end of the container is not completely closed, and the outer space of the cap and the inner space of the container are opened through the opening of the cap and the opening of the first end. And is continuous.

  A sheet is joined to the cap, and its opening is liquid-tightly closed. On the first surface of the sheet, needle stick pieces are laminated. The outer shape of the needle stick piece is smaller than the outer shape of the sheet. Therefore, the sheet also has a first surface on which the needlestick pieces are not stacked in a state where the needlestick pieces are stacked on the first surface. The opening cutter of the opening device can punch a sheet from the outside of the cap in accordance with the opening of the cap. When the cap is removed from the container, the cap can be removed from the container and opened together with the sheet and the needle stick piece. Thereby, the operator can open the container without directly contacting the sheet. Further, when the cap is fitted to the first end of the container again, the first end of the container is closed again.

  (9) The needle stick piece may be disposed inside a space in which the opening and the opening of the container are continuous in a state where the opening of the cap is closed by the sheet.

  Thereby, the opening cutter of the opening apparatus can punch out parts other than the needle stick piece in the sheet.

  (10) The container may have its inner space hermetically held by the cap, and the inner space may be in a depressurized state with respect to atmospheric pressure.

  For example, the internal space of the container is maintained in a reduced pressure state for a long time by the gas barrier sheet and the cap. As a result, a blood collection instrument having a reduced internal space is realized in a simple and inexpensive manner.

  (11) The needle puncture piece may be pierced by a blood collection needle and may be capable of liquid-tightly closing a puncture passage formed by the blood collection needle after the blood collection needle is removed. Good.

  For example, a needle stick piece is realized by vulcanized rubber or elastomer. Thereby, even if the blood collection device after blood collection is subjected to processing such as centrifugation, blood does not leak out from the puncture passage.

According to the blood collection instrument of the present invention, the first end of the container is joined to the sheet to close the opening,
The cap is fitted from the upper side of the sheet, and the needle puncture piece and a part of the first surface of the sheet are exposed to the outside through the opening formed in the top plate of the cap. The cutter can contact the sheet through the opening of the cap and punch the sheet. Thereby, the blood collection instrument which can utilize the opening device widely used with respect to a sheet type blood collection instrument is implement | achieved.

  In addition, the sealing strength between the container and the sheet is weaker than the sealing strength between the sheet and the cap, and when the cap fitted to the first end of the container is removed from the container, before the sheet is peeled off from the top plate of the cap, Since the sheet is peeled from the container, the operator can peel the sheet from the container and open the container without directly contacting the sheet. As a result, a blood collection device is realized in which contamination by blood hardly occurs when an operator manually opens the cap. In addition, the cap can be externally fitted to the first end of the container again, and the opening formed in the top plate of the cap remains blocked by the sheet, so that a blood collection device capable of re-sealing the container is realized. .

  Further, according to the blood collection instrument of the present invention, the cap is fitted to the first end of the container, and the first end of the container and a part of the outer surface of the container near the first end are covered. The outer side of the cap and the inner space of the container are continuous through the opening of the cap and the opening of the first end, and the cap opening is closed by the sheet. The sheet can be punched from the outside of the cap in accordance with the above. Thereby, the blood collection instrument which can utilize the opening device widely used with respect to a sheet type blood collection instrument is implement | achieved.

  Further, when the cap is removed from the container, the cap can be removed from the container and opened together with the sheet and the needle stick piece, so that the operator can open the container without directly contacting the sheet. As a result, a blood collection device is realized in which contamination by blood hardly occurs when an operator manually opens the cap. Moreover, since this cap can be fitted again to the first end of the container, a blood collection device capable of re-sealing the container is realized.

  Hereinafter, preferred embodiments of the present invention will be described. In addition, this embodiment is only one embodiment of this invention, and it cannot be overemphasized that an embodiment can be changed in the range which does not change the summary of this invention.

[Explanation of drawings]
FIG. 1 is a perspective view showing an external configuration of a blood collection tube 10 according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view of the blood collection tube 10. FIG. 3 is a plan view of the blood collection tube 10. FIG. 4 is a bottom view of the blood collection tube 10. FIG. 5 is a front view of the blood collection tube 10. The right side view, left side view, and rear view of the blood collection tube 10 are the same as the front view. FIG. 6 is a cross-sectional view showing a cross-sectional configuration of the blood collection tube 10 taken along the line VI-VI in FIG. FIG. 7 is an enlarged cross-sectional view of the vicinity of the cap 14 in FIG. FIG. 8 is a cross-sectional view showing the operation of opening the blood collection tube 10 by hand. 9 and 10 are cross-sectional views showing the operation of opening the blood collection tube 10 with the opening device. FIG. 11 is a perspective view showing an external configuration of a blood collection tube 30 according to the second embodiment of the present invention. FIG. 12 is an exploded perspective view of the blood collection tube 30. FIG. 13 is a plan view of the blood collection tube 30. FIG. 14 is a bottom view of the blood collection tube 30. FIG. 15 is a front view of the blood collection tube 30. The right side view, left side view, and rear view of the blood collection tube 30 are the same as the front view. 16 is a cross-sectional view showing a cross-sectional configuration of the blood collection tube 30 along the XVI-XVI cutting line of FIG. FIG. 17 is an enlarged cross-sectional view of the vicinity of the cap 32 in FIG. FIG. 18 is a cross-sectional view showing the operation of opening the blood collection tube 30 by hand. 19 and 20 are cross-sectional views showing the operation of opening the blood collection tube 30 with the opening device.

[First Embodiment]
The first embodiment of the present invention will be described below. In this embodiment, when simply referred to as “upper side” or “lower side”, the axial direction 101 in FIG. 2 is the vertical direction, the upper side in FIG. 2 is “upper side”, and the lower side in FIG. The side is “lower”.

(Schematic configuration of blood collection tube 10)
As shown in FIGS. 1 to 5, the blood collection tube 10 according to the first embodiment includes a tube main body 11, a sheet 12 that closes the open end 20 of the tube main body 11, and a rubber piece 13 attached to the sheet 12. And the cap 14 externally fitted to the opening end 20 of the tube main body 11 is a main configuration. The tube body 11 in the present embodiment corresponds to the container in the present invention, the sheet 12 corresponds to the sheet in the present invention, the rubber piece 13 corresponds to the needle stick piece in the present invention, and the cap 14 in the present invention. It corresponds to.

(Tube body 11)
As shown in FIG. 2, the tube main body 11 has a cylindrical shape. As shown in FIGS. 4 and 5, the tube body 11 is closed at the bottom as a hemispherical bottom. The upper side of the tube body 11 is opened as an open end 20. Therefore, liquid such as blood can flow into or out of the internal space of the tube body 11 from the open end 20. When the tube main body 11 is maintained in the posture shown in FIG. 1 and the like, liquid such as blood can be stored in the internal space of the tube main body 11. The open end 20 of the tube body 11 corresponds to the first end in the present invention.

  The open end 20 of the tube body 11 forms a plane orthogonal to the axial direction 101 of the cylindrical tube body 11. The plane of the open end 20 functions as a joint surface with the sheet 12.

  For example, the tube body 11 can be molded using polyethylene terephthalate as a main raw material, but other known materials may be used. The tube body 11 is preferably gas barrier because the open end 20 is closed by the sheet 12 and the internal space is kept airtight in a reduced pressure state relative to the atmospheric pressure. This gas barrier property is not necessarily realized by a single raw material, and may be realized by laminating a gas barrier film or the like on the outer surface or the inner surface of the tube body 11.

  Although not described in detail in the present embodiment, a known drug such as a serum separating agent or a coagulation promoter may be injected into the internal space of the tube body 11.

(Sheet 12)
As shown in FIGS. 1 and 2, the sheet 12 is joined to the open end 20 of the tube body 11 to close the open end 20. In the state where the sheet 12 is joined, the internal space of the tube body 11 is maintained liquid-tight and air-tight. By joining the sheet 12 under a reduced pressure atmosphere, the internal space of the tube main body 11 is brought into a reduced pressure state. In addition, in the state joined to the opening end 20 of the tube main body 11, the surface facing the outside in the sheet 12 is referred to as “front surface”, and the surface facing the internal space of the tube main body 11 is referred to as “back surface”. That is, the back surface side of the sheet 12 is joined to the opening end 20. The surface of the sheet 12 corresponds to the first surface in the present invention.

  As shown in FIG. 2, the sheet 12 is a disk-shaped thin film having an outer diameter equivalent to the outer diameter of the open end 20. The sheet 12 has a gas barrier property in order to keep the internal space of the tube body 11 airtight. Further, the sheet 12 does not pass liquid such as blood stored in the internal space of the tube main body 11 and has resistance to the liquid. Further, the sheet 12 can be pierced by a blood collection needle attached to a blood collection tube holder. Such a sheet | seat 12 is implement | achieved by the laminated film of aluminum and polyethylene, for example, However, Other resin sheets, composite sheets, etc. may be used. Joining of the opening end 20 of the pipe body 11 and the sheet 12 is realized by an easy peel described later. If the bonding between the sheet 12 and the cap 14 is realized by welding, the surface of the sheet 12 is preferably a material that can be welded to the cap 14.

(Rubber piece 13)
As shown in FIGS. 1 and 2, the rubber piece 13 is attached to the surface of the sheet 12. The rubber piece 13 has a generally disk shape, and its outer diameter is sufficiently smaller than the outer diameter of the sheet 12. A concave portion 21 is formed in the central portion of the rubber piece 13, and the central portion of the rubber piece 13 is thinned in the vertical direction (axial direction 101) by the concave portion 21. The recessed portion 21 is for allowing the blood collection needle to be easily penetrated.

  As shown in FIGS. 1 and 3, the rubber piece 13 is arranged on the surface of the sheet 12 with its center aligned with the center of the sheet 12, and is joined to the sheet 12. The joining of the sheet 12 and the rubber piece 13 is realized by a known adhesive or the like. By this joining, the rubber piece 13 is laminated on the surface of the sheet 12. As described above, since the outer diameter of the rubber piece 13 is sufficiently smaller than the outer diameter of the sheet 12, the rubber piece 13 laminated on the sheet 12 by this arrangement as shown in FIGS. 1 and 3. , The surface of the sheet 12 is exposed.

  As described above, the rubber piece 13 can be pierced with a blood collection needle. The rubber piece 13 is capable of liquid-tightly closing the puncture passage formed by the blood collection needle after the blood collection needle is removed. Such characteristics of the rubber piece 13 are realized by a known rubber such as natural rubber, isopropylene rubber, or silicon rubber. Moreover, even if it is other than rubber | gum, you may implement | achieve by elastic materials, such as a vulcanized elastomer and a thermoplastic elastomer.

(Cap 14)
As shown in FIGS. 1 and 2, the cap 14 mainly includes an annular top plate 22 and a cylindrical body portion 23. The top plate 22 and the body portion 23 can be integrally molded using a synthetic resin such as polypropylene, polyethylene, or polyethylene terephthalate as a main raw material.

  As shown in FIG. 2, the top plate 22 has an outer diameter slightly larger than the outer diameter of the open end 20 of the tube body 11. Therefore, as shown in FIG. 6, in an arrangement in which the center of the top plate 22 is aligned with the center of the open end 20, the peripheral edge of the top plate 22 projects outward from the open end 20 of the tube body 11. A body portion 23 extends downward from the peripheral edge of the top plate 22. As a result, as shown in FIGS. 1 and 5, the cap 14 is fitted onto the open end 20 of the tube body 11, and the body portion 23 extends downward along the outer peripheral surface of the tube body 11. That is, the trunk portion 23 surrounds the tube body 11. The cylindrical shape of the body portion 23 can be changed according to the outer diameter of the tube main body 11. Moreover, although not shown in each figure, the uneven | corrugated shape for anti-slip | skid etc. may be formed in the outer peripheral surface of the trunk | drum 23 so that the cap 14 may be easily removed from the pipe | tube main body 11. FIG.

  As shown in FIG. 7, an annular bulging portion 25 is formed on the inner surface of the body portion 23. The bulging portion 25 protrudes uniformly from the inner surface of the body portion 23 toward the radially inner side. The inner diameter of the bulging portion 25 is slightly smaller than the outer diameter of the tube body 11. Therefore, when the cap 14 is externally fitted to the open end 20 of the tube body 11, the body portion 23 is elastically deformed slightly outward in the vicinity of the bulge portion 25, and the bulge portion 25 of the tube body 11 is caused by the reaction force. It is pressed against the outer peripheral surface. Thereby, the cap 14 is pressure-bonded to the tube main body 11, and the cap 14 is not easily detached from the tube main body 11.

  As shown in FIGS. 2 and 6, the cap 14 is fitted to the opening end 20 so that the sheet 12 is joined to the opening end 20 of the tube body 11 and the periphery of the sheet 12 is covered. In this way, when the cap 14 is externally fitted to the tube main body 11, the entire joining boundary between the sheet 12 exposed to the outer peripheral surface side of the tube main body 11 and the open end 20 is covered by the cap 14.

  As shown in FIGS. 1 and 2, the top plate 22 has an opening 24 formed in the center thereof. The opening 24 penetrates the top plate 22 in the thickness direction (axial direction 101). The inner diameter of the opening 24 is equal to the inner diameter of the tube body 11. As shown in FIGS. 1, 3, and 6, when the cap 14 is fitted onto the open end 20 of the tube body 11, the top plate 22 comes into contact with the periphery of the surface of the sheet 12, and the central portion of the sheet 12 is Is exposed from the opening 24 of the top plate 22 to the outside. That is, a part of the surface of the sheet 12 is exposed to the outside through the opening 24.

  As described above, the exposed portion of the surface of the sheet 12 exposed from the opening 24 of the cap 14 is the central portion of the sheet 12. Further, as described above, the rubber piece 13 is arranged so that the center thereof coincides with the center of the sheet 12. The outer diameter of the rubber piece 13 is sufficiently smaller than the inner diameter of the opening 24. Therefore, the rubber piece 13 laminated on the sheet 12 is disposed inside the opening 24 of the cap 14 and is exposed to the outside through the opening 24. Further, the surface of the sheet 12 around the entire circumference of the rubber piece 13 is also exposed to the outside through the opening 24.

(Join of tube body 11, sheet 12 and cap 14)
As shown in FIG. 7, when the cap 14 is fitted onto the opening end 20 of the tube body 11, the periphery of the sheet 12 joined to the opening end 20 is formed by the opening end 20 and the top plate 22 of the cap 14. It is caught. As described above, since the inner diameter of the opening 24 formed in the top plate 22 is equal to the inner diameter of the tube main body 11, the area of the region where the top plate 22 and the sheet 12 are joined, the sheet 12 and the opening end 20 are The area of the region where the two are joined is the same. In each of these regions to be joined, the opening end 20 and the sheet 12 are joined, and the sheet 12 and the top plate 22 are joined. By joining the opening end 20 of the tube main body 11 and the sheet 12, the tube main body 11 is airtightly and liquid-tightly closed by the sheet 12.

In each joint described above, the seal strength I ₁ between the open end 20 of the tube body 11 and the sheet 12 is weaker than the seal strength I ₂ between the sheet 12 and the top plate 22 of the cap 14 (I ₁ <I ₂ ). Specifically, the open end 20 and the sheet 12 are joined by an easy peel. Easy peel is a known sealing technique used in food packaging and the like, and is classified into interfacial peeling, cohesive peeling, and delamination depending on the peeling form. The peel strength of the easy peel is, for example, in the range of about 1 to 15 N / 15 mm as measured according to the seat heel strength according to JIS Z 0238. On the other hand, the joining of the sheet 12 and the top plate 22 of the cap 14 is realized by welding or adhesion. As a joining method such as welding or adhesion, for example, a known joining method can be arbitrarily adopted as long as the measured value measured according to the seat heel strength according to JIS Z 0238 is sufficiently larger than 15 N / 15 mm.

[How to use the blood collection tube 10]
Below, the usage method of the blood collection tube 10 is demonstrated.

(Blood collection)
The blood collection tube 10 is attached to a known blood collection needle holder so that the blood collection needle penetrates the rubber piece 13 and the sheet 12. Then, blood is sucked into the internal space of the tube body 11 through the blood collection needle by the suction force generated by the decompressed state of the internal space of the tube body 11. The sucked blood 102 is stored in the internal space of the tube body 11. When a predetermined amount of blood 102 is sucked into the tube body 11, the blood collection tube 10 is removed from the blood collection needle holder. The puncture passage formed by the blood collection needle in the sheet 12 is not liquid-tightly closed, but the puncture passage formed by the blood collection needle in the rubber piece 13 is liquid-tightly closed. Thereby, the collected blood 102 does not leak from the blood collection tube 10. After blood collection, processing such as centrifugation is performed on the blood 102 of the blood collection tube 10 as necessary. For example, by performing centrifugation, the blood 102 in the blood collection tube 10 is separated into a serum component and other blood cell components.

(Opening manually)
As shown in FIG. 8, the cap 14 is removed from the tube body 11 when the blood collection tube 10 is manually opened to collect blood 102 and serum components of the blood collection tube 10. In order to remove the cap 14 from the tube body 11, the cap 14 may be pushed up or twisted relative to the tube body 11 so that the cap 14 is slightly lifted from the tube body 11. For example, when the cap 14 is moved so as to float from the tube body 11 along the axial direction 101, the sheet is sandwiched between the open end 20 of the tube body 11 and the top plate 22 of the cap 14 and joined to both. 12 is pulled in the axial direction 101. That is, the force by which the front surface and the back surface of the sheet 12 are pulled in opposite directions along the axial direction 101 acts. Further, for example, when the tube body 11 or the cap 14 is twisted so as to rotate relative to the axial direction 101, the twist is sandwiched between the open end 20 of the tube body 11 and the top plate 22 of the cap 14. Thus, the sheet 12 joined to both is twisted in the direction along the surface. That is, a force that rotates in the direction in which the front surface and the back surface of the sheet 12 are opposite to each other acts.

As described above, the seal strength I ₁ between the opening end 20 of the tube body 11 and the sheet 12 is weaker than the seal strength I ₂ between the sheet 12 and the top plate 22 of the cap 14 (I ₁ <I ₂ ). When the cap 14 is removed from the tube body 11, the sheet 12 is peeled from the open end 20 of the tube body 11 before the sheet 12 is peeled from the top plate 22 of the cap 14. Thereby, an operator peels off the sheet | seat 12 from the opening end 20 of the pipe | tube main body 11, without opening the sheet | seat 12 directly, and opens the blood collection tube 10. FIG.

  In a process in which the cap 14 is detached from the tube main body 11 by slightly floating the cap 14 with respect to the tube main body 11 or by twisting relative to the tube main body 11, the cap 14 is removed from the opening end 20 of the tube main body 11. When the sheet 12 is peeled off, the cap 14 is before being completely removed from the tube main body 11 and is close to the state of being fitted on the open end 20 of the tube main body 11 as shown in FIG. Therefore, the joint boundary between the open end 20 and the sheet 12 is covered by the cap 14. As a result, when the sheet 12 is peeled off from the opening end 20, the external atmosphere suddenly enters the internal space of the tube main body 11, the blood 102 in the tube main body 11 scatters, and the droplets of the blood 102 are splashed at the opening end 20. Even if it jumps out of the tube body 11 through the gap between the sheet 12 and the sheet 12, the splash of blood 102 adheres to the inner surface of the cap 14.

  Further, as shown in FIG. 8, when opening the blood collection tube 10, the sheet 12 is peeled from the opening end 20 of the tube body 11 before the sheet 12 is peeled from the top plate 22 of the cap 14. The opening 24 of 22 remains blocked by the sheet 12. Therefore, when the cap 14 is fitted over the opening end 20 of the pipe body 11 again, the opening end 20 of the pipe body 11 can be covered with the cap 14. Thereby, dust etc. do not mix in the blood 102 remaining in the blood collection tube 10. Further, if the blood collection tube 10 is stored in a freezer or the like with the tube body 11 covered with the cap 14 again, the blood 102 remaining in the blood collection tube 10 can be preserved.

(Opening with an opening device)
In order to collect the blood 102 and serum components of the blood collection tube 10, when opening the blood collection tube 10 using an opening device, the blood collection tube 10 is set in the opening device. As shown in FIGS. 9 and 10, the opening device is provided with an opening cutter 103 and a holding pin 104 corresponding to the inner diameter of the tube main body 11 and the arrangement of the rubber pieces 13. The opening cutter 103 has a substantially cylindrical shape surrounding the holding pin 104, and its tip is processed into a mountain-shaped blade capable of punching the sheet 12.

  When the opening device is operated, the blood collection tube 10 is positioned so that the rubber piece 13 is located immediately below the holding pin 104, and the opening cutter 103 and the holding pin 104 are collected as shown in FIG. The blood vessel 10 is lowered. Thereby, the holding pin 104 pierces the rubber piece 13. Further, the opening cutter 103 punches the sheet 12 around the rubber piece 13. As described above, since the sheet 12 is exposed to the outside through the opening 24 of the cap 14 around the rubber piece 13, the opening cutter 103 can punch the sheet 12 through the opening 24 of the cap 14. When the opening cutter 103 and the holding pin 104 are raised with respect to the blood collection tube 10, the punched sheet 12 is lifted by the holding pin 104 together with the rubber piece 13, and the sheet 12 is punched below and opened. The capped blood collection tube 10 remains. In this way, the blood collection tube 10 is opened using the opening device.

[Effects of First Embodiment]
As described above, according to the blood collection tube 10, the sheet 12 is bonded and closed to the open end 20 of the tube body 11, the cap 14 is externally fitted from above the sheet 12, and the top plate 22 of the cap 14. Since the rubber piece 13 and a part of the surface of the sheet 12 are exposed to the outside from the opening 24 formed in the opening 24, the opening cutter of the opening device contacts the sheet 12 through the opening 24 of the cap 14, The sheet 12 can be punched out. Thereby, the blood collection tube 10 which can utilize the opening device widely used with respect to a sheet type blood collection tube is implement | achieved.

Further, the sealing strength I ₁ between the opening end 20 of the tube body 11 and the sheet 12 is weaker than the sealing strength I ₂ between the sheet 12 and the top plate 22 of the cap 14 (I ₁ <I ₂ ), and the opening of the tube body 11 When the cap 14 fitted to the end 20 is removed from the pipe body 11, the sheet 12 is peeled off from the pipe body 11 before the sheet 12 is peeled off from the top plate 22 of the cap 14. The sheet collection tube 10 can be opened by peeling the sheet 12 from the tube body 11 without direct contact. Thereby, when the operator manually opens the blood collection tube 10, the blood collection tube 10 is realized in which contamination by the blood 102 hardly occurs. Further, the cap 14 after being manually opened can be externally fitted again to the opening end 20 of the tube body 11, and the opening 24 formed in the top plate 22 of the cap 14 remains closed by the sheet 12. Therefore, the blood collection tube 10 that can re-plug the tube body 11 is realized.

  Further, since the body portion 23 of the cap 14 is cylindrical along the outer surface of the tube body 11, the boundary between the open end 20 of the tube body 11 and the sheet 12 is covered by the body portion 23 of the cap 14. Even when the blood collection tube 10 is opened, the boundary between the open end 20 and the sheet 12 remains covered by the body portion 23 of the cap 14. Therefore, when the sheet 12 is peeled from the opening end 20 of the tube main body 11, even if the blood 102 in the tube main body 11 scatters from the gap between the opening end 20 and the sheet 12, the splashed blood 102 is capped. Since it adheres to the inner surface of the 14 torso parts 23, the operator's hand and the surrounding environment are not contaminated by the splash of blood 102.

  The sheet 12 is sandwiched between the opening end 20 of the tube main body 11 and the top plate 22 of the cap 14, and the sheet 12 is joined to the opening end 20 and the top plate 22 in the sandwiched portion. Therefore, when the blood collection tube 20 is opened, for example, when the cap 14 is pushed up in the axial direction 101 so as to be slightly lifted from the tube body 11, the region where the tube body 11 and the sheet 12 are joined, The region where the top plate 22 of the cap 14 is joined is aligned along the direction in which the cap 14 moves (axial direction 101). Therefore, a shearing force in a direction perpendicular to the surface is hardly generated on the sheet 12. For example, when the cap 14 is twisted with respect to the tube main body 11, the sheet 12 rotates together with the top plate 22 of the cap 14 while being sandwiched between the open end 20 of the tube main body 11 and the top plate 22 of the cap 14. Therefore, a shearing force in a direction perpendicular to the surface of the sheet 12 is hardly generated on the sheet 12. Therefore, when the cap 14 is removed from the tube body 11, the sheet 12 is peeled from the open end 20 of the tube body 11 without breaking the sheet 12.

[Second Embodiment]
The second embodiment of the present invention will be described below. In this embodiment, when simply referred to as “upper side” or “lower side”, the axial direction 111 in FIG. 12 is the vertical direction, the upper side in FIG. 12 is “upper side”, and the lower side in FIG. The side is “lower”.

(Schematic configuration of blood collection tube 30)
As shown in FIG. 11 to FIG. 15, the blood collection tube 30 according to the second embodiment closes the tube main body 31, the cap 32 fitted on the opening end 40 of the tube main body 31, and the opening 44 of the cap 32. The sheet 33 to be performed and the rubber piece 34 attached to the sheet 33 are the main components. The tube body 31 in the present embodiment corresponds to the container in the present invention, the cap 32 corresponds to the cap in the present invention, the sheet 33 corresponds to the sheet in the present invention, and the rubber piece 34 in the present invention. It corresponds to.

(Tube body 11)
As shown in FIG. 12, the tube main body 31 has a cylindrical shape. As shown in FIG. 14, the tube body 31 is closed at the bottom as a hemispherical bottom. The upper side of the tube body 31 is opened as an open end 40. Therefore, liquid such as blood can flow into or out of the internal space of the tube body 31 from the open end 40. When the tube main body 31 is maintained in the posture shown in FIG. 11 and the like, liquid such as blood can be stored in the internal space of the tube main body 31. The open end 40 of the tube body 31 forms a plane orthogonal to the axial direction 111 of the cylindrical tube body 31. The open end 40 of the tube body 31 corresponds to the first end in the present invention.

  In addition, since the raw material of the pipe main body 31 is the same as that of the pipe main body 11 in 1st Embodiment, detailed description is abbreviate | omitted here. Moreover, it is the same as that of 1st Embodiment that well-known chemical | medical agents, such as a serum separator and a coagulation promoter, may be inject | poured into the internal space of the pipe | tube main body 31. FIG.

(Cap 32)
As shown in FIGS. 11 and 12, the cap 32 mainly includes an annular top plate 41 and a cylindrical body portion 42. The top plate 41 and the body portion 42 can be integrally molded using a synthetic resin such as polypropylene, polyethylene, or polyethylene terephthalate as a main raw material.

  As shown in FIG. 12, the top plate 41 has an outer diameter that is slightly larger than the outer diameter of the opening end 40 of the tube body 31. Therefore, as shown in FIG. 16, in an arrangement in which the center of the top plate 41 is aligned with the center of the opening end 40, the peripheral edge of the top plate 41 protrudes outward from the opening end 40 of the tube body 31. A body portion 42 extends downward from the periphery of the top plate 41. As a result, as shown in FIGS. 11 and 15, the cap 32 is fitted onto the open end 40 of the tube main body 31, and the body portion 42 extends downward along the outer peripheral surface of the tube main body 31. That is, the body portion 42 surrounds the tube body 31. The cylindrical shape of the body portion 42 can be changed according to the outer diameter of the tube body 31. Moreover, although not shown in each figure, the uneven | corrugated shape for anti-slip | skid etc. may be formed in the outer peripheral surface of the trunk | drum 42 so that the cap 32 may be easily removed from the pipe body 31.

  As shown in FIG. 17, a bulging portion 43 that is thicker than the upper and lower thicknesses is formed in an annular shape around the axial direction 111 in the vicinity of the center in the axial direction 111 of the body portion 42. The bulging portion 43 bulges from the outer surface and the inner surface of the body portion 42 in the radial direction. As shown in FIG. 18, on the inner surface of the body portion 42, the bulging portion 43 is uniformly bulged toward the inside in the radial direction. The inner diameter of the bulging portion 43 on the inner surface side of the body portion 42 is slightly smaller than the outer diameter of the tube main body 31. Therefore, when the cap 32 is externally fitted to the opening end 40 of the tube body 31, the body portion 42 is elastically deformed slightly outward in the vicinity of the bulge portion 43, and the bulge portion 43 of the tube body 31 is caused by the reaction force. It is pressed against the outer peripheral surface. Thereby, the cap 32 is pressure-bonded to the tube main body 31, and the cap 32 is not easily detached from the tube main body 31. In the body portion 42, the inner diameter on the lower side of the bulging portion 43, that is, on the tip side opposite to the top plate 41 is slightly larger than the outer diameter of the tube main body 31. That is, the thickness below the bulging portion 43 in the trunk portion 43 is thin. In addition, since the bulging part 43 is for crimping the cap 32 to the pipe body 31, it does not necessarily have to bulge from the outer surface of the trunk part.

  As shown in FIGS. 11 and 17, when the cap 32 is externally fitted to the opening end 40 of the pipe body 31, the top plate 41 comes into close contact with the opening end 40. This close contact state is maintained by the pressure contact between the body portion 42 of the cap 32 and the outer peripheral surface of the pipe body 31 as described above. The close contact between the top plate 41 of the cap 32 and the open end 40 of the tube body 31 and the pressure contact between the body portion 42 of the cap 32 and the outer peripheral surface of the tube body 31 are both airtight and liquid-tight.

  As shown in FIG. 12, the top plate 41 has an opening 44 at the center. The opening 44 penetrates the top plate 41 in the thickness direction (axial direction 111). The inner diameter of the opening 44 is equal to the inner diameter of the tube body 31. When the cap 32 is externally fitted to the opening end 40 of the tube main body 31, the top plate 41 is brought into close contact with the opening end 40 of the tube main body 31, and the opening end 40 and the opening 44 are continuous around the axial direction 111. That is, in a state where the cap 32 is externally fitted to the tube body 31, a liquid such as blood can flow into or out of the internal space of the tube body 31 through the opening end 40 and the opening 44.

(Sheet 33)
11 and 12, the sheet 33 is bonded to the outer surface (upper side in FIGS. 11 and 12) of the top plate 41 of the cap 32 to close the opening 44. When the sheet 33 closes the opening 44, the internal space of the tube body 31 is maintained liquid-tight and air-tight. By joining the sheet 33 under a reduced pressure atmosphere, the internal space of the tube main body 31 is brought into a reduced pressure state. In the state where the cap 32 is joined to the top plate 41, the surface facing the outside in the sheet 33 is referred to as “front surface”, and the surface facing the internal space of the tube body 31 is referred to as “back surface”. The surface of the sheet 33 corresponds to the first surface in the present invention.

  As shown in FIG. 12, the sheet 33 is a disk-shaped thin film having an outer diameter equivalent to the outer diameter of the top plate 41 of the cap 32. Since the material and specification of the sheet 33 are the same as those of the sheet 12 in the first embodiment, detailed description thereof is omitted here. For joining the sheet 33 and the top plate 41 of the cap 32, a known joining method such as welding or adhesion may be employed.

(Rubber piece 34)
As shown in FIGS. 11 and 12, the rubber piece 34 is attached to the surface of the sheet 33. The rubber piece 34 has a generally disk shape, and its outer diameter is sufficiently smaller than the outer diameter of the sheet 33 and smaller than the opening 44 of the cap 32. A concave portion 45 is formed in the central portion of the rubber piece 34, and the central portion of the rubber piece 34 is thinned in the vertical direction (axial direction 111) by the concave portion 45. The recess 45 is for allowing the blood collection needle to be easily penetrated.

  As shown in FIGS. 11 and 13, the rubber piece 34 is arranged on the surface of the sheet 33 with its center aligned with the center of the sheet 33, and is joined to the sheet 33. The joining of the sheet 33 and the rubber piece 34 is realized by a known adhesive or the like. By this joining, the rubber piece 34 is laminated on the surface of the sheet 33. As described above, since the outer diameter of the rubber piece 34 is sufficiently smaller than the outer diameter of the sheet 33, the rubber piece 34 laminated on the sheet 33 as shown in FIGS. 11 and 13 by this arrangement. , The surface of the sheet 33 is exposed. Further, a part of the surface of the sheet 33 exposed around the rubber piece 34 is inside the opening 44 of the cap 32.

  As described above, the rubber piece 34 can be pierced with a blood collection needle. The rubber piece 34 is capable of liquid-tightly closing the puncture passage formed by the blood collection needle after the blood collection needle is removed. Since the material and characteristics of such a rubber piece 34 are the same as those of the rubber piece 13 in the first embodiment, detailed description thereof is omitted here.

[Usage method of blood collection tube 30]
Below, the usage method of the blood collection tube 30 is demonstrated.

(Blood collection)
The blood collection tube 30 is collected using a known blood collection needle holder and blood collection needle. This blood collection method is the same as in the first embodiment. When the blood collection needle penetrates the rubber piece 34 and the sheet 33 and reaches the internal space of the tube main body 31 through the opening 44 of the cap 32 and the open end 40 of the tube main body 31, the suction force generated by the decompressed state of the internal space Blood 102 is sucked into the internal space of the tube body 31 through the blood collection needle.

(Opening manually)
When the blood collection tube 30 is manually opened in order to collect blood 102 and serum components of the blood collection tube 30, the cap 32 is removed from the tube body 31. Since the bulging portion 43 of the cap 32 is attached to the pipe main body 31 by being crimped to the outer peripheral surface of the pipe main body 31, the cap 32 is stronger than the frictional resistance between the bulging portion 43 and the pipe main body 31. Is moved in the axial direction 111, the cap 32 is removed from the tube body 31. Thus, the operator peels off the sheet 33 from the open end 40 of the tube main body 31 and directly opens the blood collection tube 30 without directly contacting the sheet 33.

  As described above, when the cap 32 is removed from the tube body 31, the bulging portion 43 of the cap 32 is moved in the axial direction 111 with respect to the tube body 31. Move away from the outer peripheral surface. Thereby, even if the tip part below the bulging part 43 does not come into contact with the outer peripheral surface of the pipe body 31 in the body part 42 of the cap 32, gas can flow through the gap. Thereby, before the cap 32 is completely pulled out from the tube main body 31, outside air flows into the internal space of the tube main body 31 from the open end 40 through the gap between the tube main body 31 and the cap 32. In other words, the open end 40 of the tube body 31 is covered with the cap 32 when the outside air flows in in this way. As a result, even if the external atmosphere suddenly enters the internal space of the tube main body 31, the blood 102 in the tube main body 31 scatters, and the splash of blood 102 jumps out of the tube main body 31 from the open end 40. The splash of blood 102 adheres to the inner surface of the cap 32 or the back surface of the sheet 33.

  Further, as described above, when the blood collection tube 30 is opened, the sheet 33 is joined to the top plate 41 of the cap 32 and the opening 44 remains closed. Therefore, when the cap 32 is fitted over the opening end 40 of the pipe body 31 again, the opening end 40 of the pipe body 31 can be replugged with the cap 32. Thereby, dust etc. do not mix in the blood 102 remaining in the blood collection tube 30. Further, if the blood collection tube 30 is stored in a freezer or the like with the tube body 31 sealed again with the cap 32, the blood 102 remaining in the blood collection tube 30 can be preserved.

(Opening with an opening device)
In order to collect the blood 102 and serum components of the blood collection tube 30, when opening the blood collection tube 30 using a plugging device, the blood collection tube 30 is set in the plugging device. As shown in FIGS. 19 and 20, the opening device is provided with an opening cutter 103 and a holding pin 104 corresponding to the inner diameter of the tube main body 31 and the arrangement of the rubber pieces 34. The opening cutter 103 has a substantially cylindrical shape surrounding the holding pin 104, and its tip is processed into a mountain-shaped blade capable of punching the sheet 33.

  When the opening device is operated, the blood collection tube 30 is positioned so that the rubber piece 34 is located immediately below the holding pin 104, and the opening cutter 103 and the holding pin 104 are collected as shown in FIG. The blood vessel 30 is lowered. Thereby, the holding pin 104 pierces the rubber piece 34. Further, the opening cutter 103 punches the sheet 33 around the rubber piece 34. As described above, since the part of the sheet 33 exposed around the rubber piece 34 is inside the opening 44 of the cap 32 and the opening end 40 of the tube body 31, the opening cutter 103 is used to open the opening of the cap 32. The sheet 33 can be punched through 44. When the stopper cutter 103 and the holding pin 104 are raised with respect to the blood collection tube 30, the punched sheet 33 is lifted by the holding pin 104 together with the rubber piece 34, and the sheet 33 is punched below and opened. The capped blood collection tube 30 remains. In this way, the blood collection tube 30 is opened using the opening device.

[Effects of Second Embodiment]
As described above, according to the blood collection tube 30, the cap 32 is externally fitted to the opening end 40 of the tube body 31, and the outer peripheral surface in the vicinity of the opening end 40 and the opening end 41 of the tube body 31 is covered. Through the opening 44 and the opening end 40 of the cap 32, the outside of the cap 32 and the internal space of the pipe body 31 are continuous, and the opening 44 of the cap 32 is closed by the sheet 33. The cutter 103 can punch the sheet 33 from the outside of the cap 32 in accordance with the opening 44 of the cap 32. Thereby, the blood collection tube 30 which can utilize the opening device widely used with respect to a sheet type blood collection tube is implement | achieved.

  Moreover, since the cap 32 can be removed from the tube main body 31 and opened together with the sheet 33 and the rubber piece 34 when the cap 32 is pulled off from the tube main body 31, the operator does not directly contact the sheet 33, The blood collection tube 30 can be opened. As a result, the blood collection tube 30 is realized in which contamination by blood hardly occurs when an operator manually opens the cap. Moreover, since the cap 32 can be externally fitted to the opening end 40 of the tube body 31 again, the blood collection tube 30 that can be re-plugged is realized.

  In the present embodiment, the cap 32 is externally fitted to the tube main body 31. However, even if a part of the cap 32 is inserted into the tube main body 31 to be liquid-tight and air-tightly fitted. Good.

FIG. 1 is a perspective view showing an external configuration of a blood collection tube 10 according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view of the blood collection tube 10. FIG. 3 is a plan view of the blood collection tube 10. FIG. 4 is a bottom view of the blood collection tube 10. FIG. 5 is a front view of the blood collection tube 10. FIG. 6 is a cross-sectional view showing a cross-sectional configuration of the blood collection tube 10 taken along the line VI-VI in FIG. FIG. 7 is an enlarged cross-sectional view of the vicinity of the cap 14 in FIG. FIG. 8 is a cross-sectional view showing the operation of opening the blood collection tube 10 by hand. FIG. 9 is a cross-sectional view showing the operation of opening the blood collection tube 10 with the opening device. FIG. 10 is a cross-sectional view showing the operation of opening the blood collection tube 10 with the opening device. FIG. 11 is a perspective view showing an external configuration of a blood collection tube 30 according to the second embodiment of the present invention. FIG. 12 is an exploded perspective view of the blood collection tube 30. FIG. 13 is a plan view of the blood collection tube 30. FIG. 14 is a bottom view of the blood collection tube 30. FIG. 15 is a front view of the blood collection tube 30. 16 is a cross-sectional view showing a cross-sectional configuration of the blood collection tube 30 along the XVI-XVI cutting line of FIG. FIG. 17 is an enlarged cross-sectional view of the vicinity of the cap 32 in FIG. FIG. 18 is a cross-sectional view showing the operation of opening the blood collection tube 30 by hand. FIG. 19 is a cross-sectional view showing the operation of opening the blood collection tube 30 with the opening device. FIG. 20 is a cross-sectional view showing the operation of opening the blood collection tube 30 with the opening device.

Explanation of symbols

10, 30 ... Blood collection tube (blood collection device)
11, 31 ... Tube body (container)
12, 33 ... sheet 13, 34 ... rubber piece (needle stick piece)
14, 32 ... Cap 20, 40 ... Open end (first end)
22, 41 ... Top plate 23, 42 ... Body 24, 44 ... Opening

Claims (11)

A container having an opened first end and capable of storing blood in the internal space;
A sheet bonded to the first end of the container to close the opening;
To the first surface that is the outside of the container in the sheet, a needle stick piece laminated so that the first surface is exposed around the first surface;
A top plate in which an opening is formed, and a body portion extending from the top plate along the outer surface of the container, and one of the first surface of the needle stab piece and the sheet from the opening of the top plate. A cap is exposed to the outside, and the top plate is joined to the first surface, and is fitted on the first end of the container.
A blood collecting device, wherein the sealing strength between the container and the sheet is weaker than the sealing strength between the sheet and the cap.   The blood collecting device according to claim 1, wherein the joining of the container and the sheet is realized by an easy peel.   The blood collecting instrument according to claim 1 or 2, wherein the body of the cap has a cylindrical shape along the outer surface of the container.   The said sheet | seat is pinched | interposed by the 1st end of the said container, and the top plate of the said cap, The said container and the said top plate are respectively joined in the pinched | interposed part. The blood collection device described in 1.   The blood sampling instrument according to any one of claims 1 to 4, wherein the needle stick piece is disposed inside an opening of the first end in a state where the sheet is bonded to the first end of the container.   The exposed portion of the sheet exposed by the opening of the top plate of the cap fitted to the first end of the container has at least all of the portion around the needle puncture piece among the first surface of the sheet. The blood collecting instrument according to claim 5, which is included.   The blood collection device according to any one of claims 1 to 6, wherein the internal space of the container is hermetically held by the sheet, and the internal space is in a reduced pressure state relative to atmospheric pressure. A container having an opened first end and capable of storing blood in the internal space;
A cap fitted to the first end of the container and formed with an opening continuous with the opening of the first end;
A sheet bonded to the cap and closing the opening of the cap;
A needle stick piece laminated on the first surface which is the outside of the cap in the sheet so that the first surface is exposed around the first surface;
The cap has a top plate in which the opening is formed, and a body portion extending from the periphery of the top plate.
The body portion is provided with a bulging portion that bulges to the inner surface side on the top plate side and press-contacts with the outer surface of the container, and does not press-contact the outer surface of the container on the distal end side and has an inner diameter larger than the outer diameter of the container. all SANYO a large tip portion is provided,
The blood collecting instrument having a tapered shape in which the distal end side of the bulging portion expands toward the distal end .   The blood sampling instrument according to claim 8, wherein the needle stick piece is disposed inside a space in which the opening and the opening of the container are continuous in a state where the opening of the cap is closed by the sheet.   The blood collecting instrument according to claim 8 or 9, wherein the internal space of the container is hermetically held by the cap and the sheet, and the internal space is in a depressurized state with respect to atmospheric pressure.   11. The needle puncture piece can be pierced with a blood collection needle, and can puncture a puncture passage formed by the blood collection needle after the blood collection needle is removed. A blood collection device according to any one of the above.

Images