CN110215573B - One-way rotation mechanism and syringe having the same - Google Patents
One-way rotation mechanism and syringe having the same Download PDFInfo
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- CN110215573B CN110215573B CN201910491105.4A CN201910491105A CN110215573B CN 110215573 B CN110215573 B CN 110215573B CN 201910491105 A CN201910491105 A CN 201910491105A CN 110215573 B CN110215573 B CN 110215573B
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- elastic
- rotation
- unidirectional
- fixing member
- connecting member
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本发明提供了一种单向转动机构及具有其的注射器，该单向转动机构包括螺杆和位于螺杆一端的活塞，还包括固定构件、转动构件、连接构件和弹性构件，连接构件相对于固定构件不可转动，弹性构件设置在固定构件和连接构件之间，在弹性构件的作用下，连接构件具有处于阻挡所述转动构件沿第一方向转动的阻挡状态，以及所述连接构件具有处于使所述转动构件沿第二方向转动的避让状态。该单向转动机构结构简单，稳定性好。
The present invention provides a one-way rotation mechanism and a syringe having the same, the one-way rotation mechanism comprises a screw and a piston at one end of the screw, and also comprises a fixed component, a rotating component, a connecting component and an elastic component, the connecting component cannot rotate relative to the fixed component, the elastic component is arranged between the fixed component and the connecting component, under the action of the elastic component, the connecting component has a blocking state for blocking the rotating component from rotating in a first direction, and the connecting component has a evasive state for allowing the rotating component to rotate in a second direction. The one-way rotation mechanism has a simple structure and good stability.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a unidirectional rotating mechanism and an injector with the unidirectional rotating mechanism.
Background
The insulin syringe which can be carried at any time and is convenient to use is required by diabetics, related injection products exist in the market at present, and the principle of most of the syringes is a screw driving principle, and the principle can achieve the aim of advancing a push rod through rotation. Most syringes are used in a substantially uniform manner by first twisting the tail coil to rotate the desired scale, inserting the other end of the needle into the body at the site to be injected, and then pushing the tail push handle to inject the drug.
However, in the prior art, the unidirectional movement of the rotating member is limited to ensure the unidirectional rotation of the screw rod to complete the injection operation of the preset dose, and the structure for limiting the unidirectional movement of the rotating member has the problems of complex structure, poor stability and higher cost.
Disclosure of Invention
The invention mainly aims to provide a unidirectional rotating mechanism and an injector with the unidirectional rotating mechanism, so as to solve the problems of complex structure, poor stability and high cost of limiting unidirectional movement of a rotating member in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a unidirectional rotation mechanism for a syringe, including a screw rod and a piston provided at one end of the screw rod, the unidirectional rotation mechanism further including a fixing member in which the screw rod is not moved relative to a syringe housing and is screw-coupled with the fixing member, a rotation member in which the screw rod is inserted, the screw rod being rotated relative to the fixing member by rotation of the rotation member to move the screw rod, a connection member provided between the fixing member and the rotation member, the connection member being non-rotatable relative to the fixing member, the connection member having a blocking state in which the rotation of the rotation member is blocked in a first direction, and the connection member having a dodging state in which the rotation of the rotation member is enabled in a second direction, wherein one of the first direction and the second direction is clockwise, and the other of the first direction and the second direction is counterclockwise, and an elastic member provided between the fixing member and the connection member, the connection member being placed in the blocking state or in the dodging state by elastic deformation of the elastic member.
Further, a first unidirectional gear is arranged on the connecting member, and a second unidirectional gear meshed with the first unidirectional gear is arranged on the rotating member.
The elastic member further comprises a supporting end and an elastic end, wherein the supporting end is arranged on the inner cylinder wall of the fixed member, the elastic end extends along the direction away from the fixed member and is abutted against the connecting member, or the supporting end is arranged on the connecting member, and the elastic end extends along the direction away from the connecting member and is abutted against the fixed member.
Further, the elastic end further comprises a protrusion, and the protrusion is abutted against the connecting member or the fixing member.
Further, the elastic end is arc-shaped or spiral.
Further, the outer peripheral surface of the protrusion is at least a part of a spherical surface.
Further, the elastic member is a spring.
Further, the elastic member is integrally injection-molded with the fixing member or the connecting member.
Further, the elastic members are plural, and the plural elastic members are arranged at intervals along the circumferential direction of the fixing structure.
Further, the fixing member is provided with a first limiting portion, and the connecting member is provided with a second limiting portion matched with the first limiting portion, so that the connecting member is prevented from rotating relative to the fixing member through limiting actions of the first limiting portion and the second limiting portion.
Further, the first limiting part is a groove arranged on the wall of the fixed member, and the second limiting part is a convex part matched with the groove on the wall of the fixed member.
The connecting member further comprises a connecting body which is annular, one side of the connecting body facing the fixing member is a plane, a first one-way gear is arranged on one side of the connecting body facing the rotating member, and a second limiting part is connected with the outer edge of the connecting body and extends outwards along the radial direction of the connecting body.
According to another aspect of the present invention there is provided an injector comprising the unidirectional rotation mechanism described above, wherein the injector is a pen injector.
By applying the technical scheme of the invention, the connecting member is connected with the rotating member by utilizing the elastic action of the elastic member, so that the connecting member is in a blocking state for blocking the rotating member from rotating along the first direction or in a avoiding state for enabling the rotating member to rotate along the second direction through the elastic deformation of the elastic member, and the elastic member has a simple structure and is stable and reliable in operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 shows a schematic view of an exploded construction of a first embodiment of a syringe according to the present invention;
fig. 2 shows a schematic structural view of an embodiment one of a fixing member and a connecting member of a syringe according to the present invention;
Fig. 3 shows a schematic structural view of an embodiment one of the connecting member of the syringe according to the present invention;
fig. 4 shows a schematic exploded view of a second embodiment of a syringe according to the invention;
fig. 5 shows a schematic structural view of a second embodiment of a connecting member of a syringe according to the present invention;
fig. 6 shows a schematic cross-sectional structure of an embodiment of a syringe according to the present invention.
Wherein the above figures include the following reference numerals:
10. a fixing member; 11, an accommodating cavity 12, a first limiting part;
20. A second unidirectional gear;
30. the connecting component, 31, the connecting body, 32, the second limiting part, 33, the first unidirectional gear;
40. elastic member 41, supporting end 42, elastic end 43, protrusion;
50. A screw;
60. a piston;
70. Pushing the handle.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 6, according to an embodiment of the present invention, there is provided a one-way rotation mechanism.
Specifically, as shown in fig. 1, 4 and 6, the unidirectional rotation mechanism comprises a screw 50 and a piston 60 arranged at one end of the screw, the injector further comprises a fixing member 10, a rotation member 20, a connecting member 30 and an elastic member 40, wherein the screw is arranged in a containing cavity in the fixing member 10 in a penetrating way and is in threaded connection with the fixing member 10, the screw is arranged in the rotation member 20 in a penetrating way so as to enable the screw 50 to rotate relative to the fixing member 10 by driving the rotation member 20 to rotate, a push handle 70 is arranged on the screw 50 so as to enable the screw 50 to push the piston 60 to move through the push handle 70, the connecting member 30 is arranged between the fixing member 10 and the rotation member 20, a first limiting part 32 matched with the first limiting part 12 is arranged on the fixing member 10, the connecting member 30 is prevented from rotating relative to the fixing member 10 by the limiting action of the first limiting part 12 and the second limiting part 32, the connecting member 30 is provided with a blocking state in which the rotation member 20 is blocked in a first direction, and the connecting member 30 is provided with a state in which the rotation member 20 is enabled to rotate in a second direction, the connecting member 30 is in a state in which the rotation member 20 is enabled to rotate in a second direction, the connecting member 30 is enabled to rotate in a clockwise direction or an elastic state in which the first direction is enabled to be in the opposite direction to rotate relative to the rotation member 30, and the elastic member 40 is enabled to rotate in the first direction and the elastic member 40 is arranged in the opposite direction, which is enabled to rotate state and the first elastic state is arranged in the first direction and the opposite direction and the first limiting state and the elastic member 30 is kept in the first state by the first state and the first limiting state and the first elastic member is in the first state and the state is kept. The fixing member 10 has a cylindrical structure, and the rotating member 20 has a cylindrical structure, but the fixing member 10 and the rotating member 20 may have other structures.
In the present embodiment, by fixedly providing the elastic member 40 on the fixing member 10 or the connecting member 30, the connecting member 30 and the rotating member 20 are engaged by the elastic action of the elastic member, so that the connecting member 30 is placed in the blocking state blocking the rotation of the rotating member 20 in the first direction or in the rotation avoidance state of the rotating member 20 in the second direction by the elastic deformation of the elastic member 40, the arrangement is made such that the elastic member 40 is simple in structure, and stable and reliable in operation.
In the present embodiment, the first one-way gear 33 is provided on the connection member 30, and the second one-way gear 21 meshed with the first one-way gear 33 is provided on the rotation member 20 to unidirectionally rotate the rotation member 20 with respect to the connection member 30 by the action of the first one-way gear 33 and the second one-way gear 21. The connection member 30 has a blocking state in which the first unidirectional gear 33 is engaged with the second unidirectional gear 21, and the connection member 30 has a withdrawing state in which the first unidirectional gear 33 is disengaged from the second unidirectional gear 21 and the rotation member 20 is rotated in the second direction, the elastic member 40 elastically presses the connection member 30 in the blocking state, the fixing member 10 cooperates with the second limiting part 32 to prevent the rotation of the connection member 30 by the first limiting part 12, the connection member 30 cooperates with the second unidirectional gear 21 to prevent the rotation of the rotation member 20 in the first direction by the first unidirectional gear 33, and the rotation of the rotation member 20 is driven in the second direction, so that the first unidirectional gear 33 can drive the second unidirectional gear 21 to be separated, so that the connection member 30 is in the withdrawing state by pressing the elastic member 40, so that the screw 50 is rotated relative to the fixing member 10 by the rotation of the external driving rotation member 20, so that the screw drives the piston to move, one of the first direction and the second direction is clockwise, and the other of the first direction and the second direction is counterclockwise.
As shown in fig. 1, the elastic member 40 includes a support end 41 and an elastic end 42, the support end 41 is disposed on the inner wall of the fixing member 10, the support end 41 extends along the axial direction of the fixing member 10, and the elastic end 42 abuts against the connecting member 30. Wherein the extending direction of the elastic end 42 and the extending direction of the supporting end 41 have an included angle, such that the elastic end 42 can effectively provide the elastic force to the connecting member 30 and bring the first unidirectional gear 33 into contact with the second unidirectional gear 21. The elastic member 40 is deformed to yield the connection member 30 to rotate the rotation member 20. Wherein the elastic member 40 has an arc shape. The arc shape is formed to extend around the circumference of the connection member 30, so that the arrangement is sufficiently extended within the fixing member 10 and provides a deformation basis for the elastic end, thereby enabling a stable elastic force to be obtained. Of course, the angle between the extending direction of the elastic end 42 and the extending direction of the supporting end 41 may be zero. The inner cylinder wall comprises an inner cylinder side wall and an inner cylinder bottom wall, and the supporting end 41 is arranged on the inner cylinder side wall or the inner cylinder bottom wall. In addition, the elastic end 42 further includes a protrusion 43, and the protrusion 43 abuts against the connection member 30. The protrusions are abutted against the connecting member 30, so that the elastic member 40 is easy to elastically deform by utilizing the height of the protrusions 43, and stable elastic force is provided for the connecting member 30.
In this embodiment, the connecting member 30 includes a connecting body 31, the connecting body 31 is annular, a side of the connecting body 31 facing the fixing member 10 is a plane, the second end of the elastic member 40 abuts against the plane, a side of the connecting body 31 facing the rotating member 20 is provided with a first unidirectional gear 33, and the second limiting portion 32 is connected to an outer edge of the connecting body 31 and extends outwards along a radial direction of the connecting body 31. When the rotating member 20 rotates clockwise, the first unidirectional gear 33 of the connecting member 30 is locked with the second unidirectional gear 21 of the rotating member 20, and when the rotating member 20 rotates counterclockwise, the connecting member 30 performs a regular jumping motion due to the elastic member 40.
As shown in fig. 4 and 5, in the embodiment, the elastic member 40 includes a support end 41 and an elastic end 42, the support end 41 is fixedly connected with the connection member 30, and the elastic end 42 is disposed to extend in a direction away from the connection member 30 and abuts against the inner cylinder wall of the fixing member 10. The arrangement is such that the elastic member 40 can apply an elastic force to the connection member 30 using a reaction force of the inner cylinder wall of the fixing member 10 so that the first unidirectional gear 33 of the connection member 30 is coupled with the second unidirectional gear 21 of the rotation member 20, or the elastic member 40 is deformed to move the connection member 30 toward the direction of the fixing member 10 to rotate the rotation member 20. Wherein the elastic end 42 is arc-shaped or spiral-shaped, such that the elastic end 42 is provided to be structurally stable and provide stable elastic force in the cylindrical space of the fixing member 10.
As shown in fig. 5, the elastic end 42 further includes a protrusion 43, and the protrusion 43 abuts against the inner cylinder wall of the fixing member 10. The protrusion 43 is abutted against the bottom wall of the inner cylinder wall of the fixing member 10, so that the elastic member 40 is easier to elastically deform by utilizing the height of the protrusion 43, and further, a stable elastic force is provided for the connecting member 30.
In addition, the outer peripheral surface of the projection 43 is at least a part of a spherical surface. This arrangement allows the protrusions 43 to smoothly contact the connection member 30, thereby improving the operational stability of the elastic member 40.
In the present embodiment, the elastic member 40 is integrally injection-molded with the fixing member 10. This arrangement allows the connection stability of the elastic member 40 and the fixing member 10 to be improved, the reliability of the product to be improved, and the production cost to be reduced.
In the present embodiment, the elastic member 40 is integrally injection-molded with the connection member 30. This arrangement allows the connection stability of the elastic member 40 and the connection member 30 to be improved, and the processing to be facilitated, the reliability of the product to be improved, and the production cost to be reduced.
As shown in fig. 4, the elastic members 40 are plural, and the plural elastic members 40 are provided at intervals along the circumferential direction of the fixing member 10. The arrangement is such that the plurality of elastic members 40 can apply uniform elastic force to the connection member 30 to support the connection member 30 and prevent the rotation member 20 from rotating, or the elastic members 40 are deformed to give way, so that the connection member 30 is in a state of avoidance, and the rotation member 20 is rotated. Preferably, the number of elastic members 40 is two.
As shown in fig. 2 and 3, the first limiting portion 12 is a groove formed on the wall of the fixing member 10, and the second limiting portion 32 is a protrusion that mates with the groove formed on the wall of the fixing member 10. The protrusions and recesses are in a clearance fit so as to facilitate movement of the connecting member along the axis of the securing member 10.
Further, the first limiting portions 12 are plural, the first limiting portions 12 are arranged at intervals along the circumferential direction of the fixing member 10, the second limiting portions 32 are plural, the second limiting portions 32 are arranged at intervals along the circumferential direction of the connecting member 30, and the second limiting portions 32 are arranged in one-to-one correspondence with the first limiting portions 12.
In the embodiment, the injector comprises a screw 50, one end of the screw is provided with a piston 60, the injector further comprises a fixed member 10, a rotating member 20, a connecting member 30 and an elastic member 40, one end of the rotating member is provided with a first connecting hole for the screw to pass through, one end of the fixed member 10 far away from the piston is provided with a containing cavity 11, the wall of the fixed member 10 is provided with a first limiting part 12, the first limiting part 12 is communicated with the containing cavity 11, the rotating member 20 is rotatably arranged in the containing cavity 11, the opening of the rotating member 20 facing one end of the fixed member is a kidney-shaped hole for the screw to pass through, one end of the rotating member 20 facing the fixed member 10 is provided with a second unidirectional gear 21, the connecting member 30 is movably arranged in the containing cavity 11, the connecting member 30 is positioned between the second unidirectional gear 21 and the fixed member 10, the connecting member 30 is provided with a second limiting part 32, one end of the connecting member 30, which is close to the rotating member 20, is provided with a first gear 21 capable of being matched with the first unidirectional gear 21 and the elastic member 40 to be meshed with the first unidirectional gear 33, the elastic member 30 can be meshed with the first unidirectional gear 40, the first unidirectional gear is prevented from being meshed with the first unidirectional gear 30, the elastic member 30 is meshed with the first unidirectional gear 40, and the elastic member is in a state of the state of being kept away from the elastic member 30 is provided with the first unidirectional gear 40, and the elastic member is connected with the elastic member 30 is connected with the first unidirectional gear 30, and the elastic member is connected with the elastic member is in a state 33; wherein, when a moment is applied to the rotating member 20 in a first direction about the axis of the rotating member 20, the elastic member 40 drives the connecting member 30 to be in a blocking state, the fixed member 10 is engaged with the second stopper portion 32 through the first stopper portion 12 to prevent the rotation of the connecting member 30, the connecting member 30 is engaged with the second one-way gear 21 through the first one-way gear 33 to prevent the rotation of the rotating member 20, and when a moment is applied to the rotating member 20 in a second direction about the axis of the rotating member 20, the second one-way gear 21 drives the first one-way gear 33 to be away so that the connecting member 30 is in a dodged state by pressing the elastic member 40 and rotates the rotating member 20 in the second direction to drive the screw to rotate the piston, one of the first direction and the second direction is a clockwise direction, and the other of the first direction and the second direction is a counterclockwise direction.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A unidirectional rotation mechanism for a syringe, the unidirectional rotation mechanism comprising a screw (50) and a piston (60) arranged at one end of the screw (50), characterized in that the unidirectional rotation mechanism further comprises a fixing member (10) which does not move relative to a syringe housing, the screw (50) penetrating inside the fixing member (10) and being in threaded connection with the fixing member (10), a rotation member (20) penetrating inside the rotation member (20), rotation of the rotation member (20) rotating the screw (50) relative to the fixing member (10) such that the screw (50) pushes the piston (60) to move, a connection member (30) arranged between the fixing member (10) and the rotation member (20), the connection member (30) being non-rotatable relative to the fixing member (10), the connection member (30) having a blocking state blocking rotation of the rotation member (20) in a first direction and a clockwise direction (30) having a clockwise direction, wherein the rotation of the connection member (30) has a clockwise direction, the other of the first direction and the second direction is a counterclockwise direction;
An elastic member (40), the elastic member (40) being disposed between the fixing member (10) and the connecting member (30) to place the connecting member (30) in the blocking state or in the escape state by elastic deformation of the elastic member (40);
A first unidirectional gear (33) is arranged on the connecting member (30), and a second unidirectional gear (21) meshed with the first unidirectional gear (33) is arranged on the rotating member (20);
The elastic member (40) comprises a supporting end (41) and an elastic end (42), wherein the supporting end (41) is arranged on the inner cylinder wall of the fixed member (10), the elastic end (42) is arranged in an extending mode along the direction away from the fixed member (10) and is abutted against the connecting member (30), or the supporting end (41) is arranged on the connecting member (30), the elastic end (42) is arranged in an extending mode along the direction away from the connecting member (30) and is abutted against the fixed member (10), and an included angle is formed between the extending direction of the elastic end (42) and the extending direction of the supporting end (41);
the elastic end (42) further comprises a protrusion (43), wherein the protrusion (43) is abutted against the connecting member (30) or the fixing member (10);
The elastic end (42) is arc-shaped or spiral;
The outer peripheral surface of the bulge (43) is at least part of a sphere;
-said elastic member (40) is injection molded integrally with said fixing member (10) or with said connecting member (30);
The elastic members (40) are arranged at intervals along the circumferential direction of the fixing member (10), so that the elastic members (40) can apply uniform elastic force to the connecting member (30) to support the connecting member (30) and prevent the rotating member (20) from rotating, or the elastic members (40) are deformed to give way, so that the connecting member (30) is in an avoidance state, and the rotating member (20) is rotated.
2. A unidirectional rotation mechanism as claimed in claim 1, characterized in that the fixing member (10) is provided with a first limit portion, the connecting member (30) is provided with a second limit portion (32) cooperating with the first limit portion (12) to prevent rotation of the connecting member (30) relative to the fixing member (10) by limit action of the first limit portion (12) and the second limit portion (32).
3. A unidirectional rotation mechanism as claimed in claim 2, characterized in that the first limit portion (12) is a recess provided in the wall of the fixed member (10), and the second limit portion (32) is a protrusion cooperating with the recess in the wall of the fixed member (10).
4. Unidirectional rotation mechanism according to claim 2, characterized in that the connection member (30) comprises a connection body (31), the connection body (31) is annular, one side of the connection body (31) facing the fixing member (10) is a plane, one side of the connection body (31) facing the rotation member (20) is provided with the first unidirectional gear (33), and the second limiting part (32) is connected with the outer edge of the connection body (31) and extends outwards along the radial direction of the connection body (31).
5. A syringe comprising a unidirectional rotation mechanism, wherein the unidirectional rotation mechanism is a unidirectional rotation mechanism as claimed in any one of claims 1 to 4, wherein the syringe is a pen-type syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491105.4A CN110215573B (en) | 2019-06-06 | 2019-06-06 | One-way rotation mechanism and syringe having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491105.4A CN110215573B (en) | 2019-06-06 | 2019-06-06 | One-way rotation mechanism and syringe having the same |
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| Publication Number | Publication Date |
|---|---|
| CN110215573A CN110215573A (en) | 2019-09-10 |
| CN110215573B true CN110215573B (en) | 2025-02-14 |
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| CN201910491105.4A Active CN110215573B (en) | 2019-06-06 | 2019-06-06 | One-way rotation mechanism and syringe having the same |
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| CN114129824A (en) * | 2020-09-03 | 2022-03-04 | 甘甘医疗科技江苏有限公司 | Drug delivery device |
| CN113332537A (en) * | 2021-06-04 | 2021-09-03 | 常熟康信医疗器械有限公司 | Portable intelligent syringe assembly |
| CN114176952A (en) * | 2021-11-17 | 2022-03-15 | 中国人民解放军总医院第六医学中心 | Treatment frame for nursing field wounded personnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102716529A (en) * | 2012-06-29 | 2012-10-10 | 甘李药业有限公司 | Pen injector |
| CN107206171A (en) * | 2015-01-28 | 2017-09-26 | 诺和诺德股份有限公司 | Piston drive for injection device |
| CN210904435U (en) * | 2019-06-06 | 2020-07-03 | 甘甘医疗科技江苏有限公司 | Unidirectional rotating mechanism and syringe with same |
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