CN113318302A - Internal anti-scratching structure suitable for automatic injector - Google Patents
Internal anti-scratching structure suitable for automatic injector Download PDFInfo
- Publication number
- CN113318302A CN113318302A CN202110753045.6A CN202110753045A CN113318302A CN 113318302 A CN113318302 A CN 113318302A CN 202110753045 A CN202110753045 A CN 202110753045A CN 113318302 A CN113318302 A CN 113318302A
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- Prior art keywords
- strip
- auxiliary spring
- structure suitable
- internal anti
- auto
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- Granted
Links
- 238000006748 scratching Methods 0.000 title abstract description 5
- 230000007704 transition Effects 0.000 claims description 12
- 229940090047 auto-injector Drugs 0.000 claims description 11
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 16
- 239000007924 injection Substances 0.000 description 16
- 239000003814 drug Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 241000180587 Pinnidae Species 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010999 medical injection Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
Landscapes
- 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
The invention relates to an internal anti-scratching structure suitable for an automatic injector, which comprises a bearing main body, wherein an auxiliary spring is sleeved outside the bearing main body, a power card connecting clamping groove is formed in the bearing main body, a plurality of supporting structures are arranged on the bearing main body, one end of the auxiliary spring is in contact with the supporting structures, each supporting structure comprises a strip-shaped rib body, each strip-shaped rib body comprises a strip-shaped guiding structure, and a protruding contact piece extends from one end of each strip-shaped guiding structure. Therefore, due to the existence of the supporting structure, when the auxiliary spring is assembled in the pen feeding shell to which the automatic injector belongs, the inner wall of the pen feeding shell cannot cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the triggering failure state of the associated assembly in the auxiliary spring is avoided, and the auxiliary spring cannot deflect. The strip-shaped guide structure and the raised contact piece structure are adopted, so that the normal compression and propulsion of the auxiliary spring are not influenced.
Description
Technical Field
The present invention relates to a structure for a self-administration system, and more particularly to an internal anti-scratch structure for an auto-injector.
Background
The existing disposable automatic injector has very complex design principle, leads to a plurality of parts which are generally more than 15, so the reliability is not high, the assembly difficulty is large, and the final product cost is too high.
CN110237366A discloses a medical injection device, which comprises an outer barrel and a pen cap, one end of the outer barrel is provided with a detachable medicine bin, a replaceable standard card type medicine bottle is arranged in the medicine bin, one end of the inner part of the outer barrel close to the medicine bin is provided with a fixed sleeve, the inner axial movement of the fixed sleeve is provided with a push rod seat, the inner part of the push rod seat is provided with a transmission ring which can be meshed with the end part of a transmission rod, the outer side of the transmission rod is sleeved with a ratchet ring which can axially slide, one end face of the ratchet ring is in one-way meshing with the inner part of the outer barrel, the other end of the ratchet ring is axially provided with a first spring, one end of the push rod seat is axially provided with a push rod seat spring which is propped against the outer barrel, and one end of a push rod penetrates through the push rod seat to stretch into the standard card type medicine bottle to be connected with a push block.
CN109999272A discloses a disposable adjustable injection device for insulin injection, which comprises a protective cover, a disposable needle, a pen core sleeve, a main body shell, a pen core and an adjusting component, one end of the main body shell is provided with a second boss, the outside of the second boss is provided with a refill sleeve, one end of the pencil lead sleeve is provided with a thread groove, the external thread of the second boss is in threaded connection with the thread groove, the other end of the refill sleeve is provided with a first boss, the outside of the first boss is connected with a disposable needle head through threads, a steel needle is inserted in the disposable needle head, a pen core is arranged in the pen core sleeve, a protective cover is sleeved outside the pen core sleeve, the other end of main body cover is provided with adjusting part, main body cover's internally mounted has fixed sleeve, fixed sleeve's one end outside protrusion has flange portion.
CN102264417A discloses an injection device comprising: a long housing; a container carrier having a medicament container to which a needle is mounted; a puncture device comprising a separation sleeve, a preloaded puncture spring device and a puncture holding device, wherein said preloaded puncture spring device is capable of acting on said separation sleeve and thereby on said container carrier for a sliding movement of said container and needle, and said puncture holding device is capable of holding said puncture spring device in a loaded state; injection means comprising a plunger rod, pre-loaded injection spring means and injection retaining means, wherein the plunger rod is arranged to act on a stopper in the medicament container, the pre-loaded injection spring means is adapted to act on the plunger rod such that the stopper is displaced within the container, and the injection retaining means is adapted to retain the injection spring means in a loaded state; retraction means comprising a preloaded retraction spring and retraction holding means, wherein the preloaded retraction spring is arranged to act on the separation sleeve and thereby on the container carrier, and the retraction holding means is capable of holding the retraction spring in a loaded state; a puncture sequence initiating means capable of acting on a puncture trigger means arranged on said separation cannula for disconnecting said puncture holding means; an injection trigger means provided on said separation sleeve and capable of disconnecting said injection holding means to initiate an injection sequence when the separation sleeve and the plunger rod are moved to a specific position; and retraction triggering means arranged on said separation sleeve and capable of disconnecting said retraction holding means for initiating needle retraction when said plunger rod has been moved to a certain position; characterized in that the device further comprises damping means comprising a compartment containing a volume of a highly viscous liquid and being partly defined by the outer surface of the plunger rod and the inner surface of the cap, wherein the compartment is arranged with a channel through which the liquid is forced only upon initiation of the injection sequence, such that the volume within the compartment decreases with movement of the plunger rod in the container during the entire injection sequence and thereby damping shear forces are generated.
However, prior art autoinjectors, which have secondary springs that, when used, are susceptible to unwanted axial rotation during compression. Therefore, a force different from the firing injection direction is generated, and smooth firing is affected. If the secondary spring is restrained as necessary, too many auxiliary structures are often required to be added, and the secondary spring is also subjected to other additional external stress, so that the triggering force application is too large, and improper impact of the PFS assembly is easily caused.
In view of the above-mentioned drawbacks, the present inventors have made active research and innovation to create an internal anti-scratch structure for an automatic injector, which has industrial utility value.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an internal anti-scratch structure suitable for an automatic injector.
The invention relates to an internal anti-scratching structure suitable for an automatic injector, which comprises a bearing main body, wherein an auxiliary spring is sleeved outside the bearing main body, and a power card connecting clamping groove is arranged on the bearing main body, wherein: the bearing main body is provided with a plurality of supporting structures, one end of the auxiliary spring is in contact with the supporting structures, the supporting structures comprise strip-shaped rib bodies, the strip-shaped rib bodies comprise strip-shaped guiding structures, and protruding contact pieces extend from one ends of the strip-shaped guiding structures.
Further, the above-mentioned internal anti-scratch structure suitable for an automatic injector, wherein a transition slope is distributed between the strip-shaped guide structure and the protruding contact piece, and the angle of the transition slope is 100 to 160 degrees.
Further, the internal anti-scratch structure for the automatic injector is described, wherein the angle of the transition slope is 120 degrees.
Further, the internal anti-scratch structure for an automatic injector is described above, wherein the width of the strip-shaped guiding structure is 1 to 2 mm.
Further, the internal anti-scratch structure for the automatic injector is provided, wherein the height of the strip-shaped guiding structure is 0.3 to 1 mm.
Furthermore, the above-mentioned internal anti-scratching structure for an automatic injector, wherein the protruding contact piece is provided with a positioning groove, and one end of the secondary spring is in contact with the positioning groove.
Still further, an internal anti-scratch structure for an auto-injector as described above, wherein said support structure has two, mirror image, arranged on the outer sidewall of the carrier body.
Still further, the above-mentioned internal anti-scratch structure suitable for an automatic injector, wherein, the support structure has four, and equidistant distribution is on the lateral wall of bearing the weight of the main part each other.
By the scheme, the invention at least has the following advantages:
1. through the existence of the supporting structure, when the auxiliary spring is assembled in the pen feeding shell to which the automatic injector belongs, the inner wall of the pen feeding shell cannot cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the triggering failure state of the associated assembly in the auxiliary spring is avoided, and the auxiliary spring is ensured not to deflect.
2. The supporting structure adopts a strip-shaped guiding structure and a raised contact piece structure, and the normal compression and propulsion of the auxiliary spring cannot be influenced.
3. The whole structure is simple, the traditional bearing main body can be matched for use only by being transformed and replaced, and the implementation cost is low.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a load bearing body.
Fig. 2 is a schematic view of the combination of the secondary spring and the support structure.
Fig. 3 is a schematic view of the assembly of the secondary spring with the upper pen shell.
The meanings of the reference symbols in the drawings are as follows.
1 carrying body 2 secondary spring
3 power card links up 4 strip guide structures in draw-in groove
5 raised contact piece 6 transition slope
7 Upper pen shell
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
An inside anti-scratch structure suitable for autoinjector as figure 1 to 3, including bearing main part 1, bear 1 overcoat of main part and be equipped with secondary spring 2, bear and be provided with power card linking draw-in groove 3 on the main part 1, its distinctive and distinctive part lies in: in order to achieve an effective correction of the movement path of the spring during use, preventing unnecessary twisting or compression thereof, the carrier body 1 is provided with a number of support formations, with which one end of the secondary spring 2 is in contact. Specifically, in order that when the secondary spring 2 is assembled in the upper pen shell 7 of the automatic injector, the inner wall of the upper pen shell 7 cannot cause improper compression or displacement of the secondary spring 2 when the secondary spring 2 is scratched, the support structure adopted by the invention comprises a strip-shaped rib body. The strip rib body comprises a strip guide structure 4, and one end of the strip guide structure 4 extends to form a convex contact piece 5. Thus, the contact area between the auxiliary spring 2 and the main spring can be increased, abnormal torsional stress is transmitted by means of the supporting structure, and the auxiliary spring 2 is prevented from being excessively acted. Meanwhile, as more parts of the secondary spring 2 are in contact with the supporting structure during use, the contact similar to interference fit can be generated, and the secondary spring 2 can be supported to carry out necessary auxiliary limiting even when the scraping with the inner wall of the upper pen shell 7 occurs. Of course, the existing contact friction force cannot limit the normal injection firing stress and cannot influence the normal force application firing.
In a preferred embodiment of the present invention, transition slopes 6 are distributed between the strip-shaped guiding structure 4 and the protruding contact sheet 5. In this way, it is ensured that the secondary spring 2 can be smoothly contracted during use and can follow the guidance of the transition slope 6 during movement without local jamming. Meanwhile, the angle of the transition slope 6 is 100 to 160 degrees in consideration of implementation convenience. Of course, in view of the size of the carrier body 1 and the secondary spring 2 adopted by various conventional auto-injectors, the angle of the transition slope 6 is 120 degrees, which can meet the conventional use requirements. Of course, the actual angle of the transition ramp 6 may be adjusted in order to suit particular implementation needs, and is not limited to 100 to 160 degrees.
Further, in order to effectively bear the stress of the secondary spring 2 during use, the width of the strip-shaped guide structure 4 is 1 to 2 mm, and the height of the strip-shaped guide structure 4 is 0.3 to 1 mm. Thus, the conventional manufacturing materials are integrated, and the fracture or distortion cannot occur. Of course, in order to perform appropriate auxiliary limiting on one end of the secondary spring 2, the protruding contact piece 5 may be provided with a positioning groove, and one end of the secondary spring 2 is in contact with the positioning groove.
In connection with the practical implementation, in order to effectively carry and guide the rotational stress to which the secondary spring 2 is subjected, two support structures are adopted, which are distributed on the outer side wall of the bearing body 1 in a mirror image manner. Therefore, no matter the left half side or the right half side of the secondary spring 2 has the tendency of axial deflection, the deviation-rectifying limit can be realized through the corresponding support structure. Of course, for a more optimized implementation, four support structures may be selected for the present invention. In this way, one end of the secondary spring 2 can be guided by the uniform spacing of the four support structures during implementation.
The working principle of the invention is as follows:
the auto-injector is in a fired state in conjunction with the user's depression. During this time, the power card begins to push the secondary spring 2 to compress. At this time, the auxiliary spring 2 can be guided to be smoothly compressed by the existence of the supporting structure, unnecessary axial rotation cannot occur during compression, blocking cannot occur, and smooth percussion is realized.
It should be noted that the present invention is only exemplified by an automatic injector, and can be applied to various self-administration systems, which are not described herein.
The invention has the following advantages by the aid of the character expression and the accompanying drawings:
1. when the auxiliary spring is assembled in the pen feeding shell to which the automatic injector belongs, the inner wall of the pen feeding shell cannot cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the triggering failure state of the associated assembly in the auxiliary spring is avoided, and the auxiliary spring cannot deflect.
2. The supporting structure adopts a strip-shaped guiding structure and a raised contact piece structure, and the normal compression and propulsion of the auxiliary spring cannot be influenced.
3. The whole structure is simple, the traditional bearing main body can be matched for use only by being transformed and replaced, and the implementation cost is low.
Furthermore, the indication of the orientation or the positional relationship described in the present invention is based on the orientation or the positional relationship shown in the drawings, and is only for convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or configuration must have a specific orientation or be operated in a specific orientation configuration, and thus, should not be construed as limiting the present invention.
The terms "primary" and "secondary" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "primary" or "secondary" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Also, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other or mutually interacted. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. And it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or component being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an inside anti-scratch structure suitable for automatic syringe, is including bearing the main part, it is equipped with vice spring to bear the main part overcoat, it links up draw-in groove, its characterized in that to be provided with the power card in the main part to bear: the bearing main body is provided with a plurality of supporting structures, one end of the auxiliary spring is in contact with the supporting structures, the supporting structures comprise strip-shaped rib bodies, the strip-shaped rib bodies comprise strip-shaped guiding structures, and protruding contact pieces extend from one ends of the strip-shaped guiding structures.
2. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: transition slopes are distributed between the strip-shaped guide structures and the protruding contact pieces, and the angle of each transition slope is 100-160 degrees.
3. An internal anti-scratch structure suitable for use in an auto-injector according to claim 2, wherein: the angle of the transition slope is 120 degrees.
4. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: the width of the strip-shaped guide structure is 1 to 2 mm.
5. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: the height of the strip-shaped guide structure is 0.3 to 1 mm.
6. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: the protruding contact piece is provided with a positioning groove, and one end of the auxiliary spring is in contact with the positioning groove.
7. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: the support structure has two, and the mirror image distributes on the lateral wall of bearing the weight of the body.
8. An internal anti-scratch structure suitable for use in an auto-injector according to claim 1, wherein: the support structures are four and are distributed on the outer side wall of the bearing body at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110753045.6A CN113318302B (en) | 2021-07-02 | 2021-07-02 | Internal scratch-proof structure suitable for automatic injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110753045.6A CN113318302B (en) | 2021-07-02 | 2021-07-02 | Internal scratch-proof structure suitable for automatic injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113318302A true CN113318302A (en) | 2021-08-31 |
| CN113318302B CN113318302B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110753045.6A Active CN113318302B (en) | 2021-07-02 | 2021-07-02 | Internal scratch-proof structure suitable for automatic injector |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080077090A1 (en) * | 2005-02-18 | 2008-03-27 | Edgar Hommann | Spring guide suitable for use in, for example, an injection device |
| CN103249443A (en) * | 2010-10-08 | 2013-08-14 | 赛诺菲-安万特德国有限公司 | Auto-injector |
| CN103282065A (en) * | 2010-12-22 | 2013-09-04 | 欧文蒙福德有限公司 | Autoinjector having two springs for biasing the shroud forwardly |
| US20130281935A1 (en) * | 2010-12-21 | 2013-10-24 | Sanofi-Aventis Deutschland Gmbh | Auto-Injector |
| WO2014001319A1 (en) * | 2012-06-29 | 2014-01-03 | Novo Nordisk A/S | Spring driven injection device |
| CN109847151A (en) * | 2018-12-27 | 2019-06-07 | 宁波美生医疗器材有限公司 | A kind of safety-type injection device, syringe and its assemble method |
| CN214860063U (en) * | 2021-07-02 | 2021-11-26 | 苏州嘉树医疗科技有限公司 | Internal anti-scratching structure suitable for automatic injector |
-
2021
- 2021-07-02 CN CN202110753045.6A patent/CN113318302B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080077090A1 (en) * | 2005-02-18 | 2008-03-27 | Edgar Hommann | Spring guide suitable for use in, for example, an injection device |
| CN103249443A (en) * | 2010-10-08 | 2013-08-14 | 赛诺菲-安万特德国有限公司 | Auto-injector |
| US20130281935A1 (en) * | 2010-12-21 | 2013-10-24 | Sanofi-Aventis Deutschland Gmbh | Auto-Injector |
| CN103282065A (en) * | 2010-12-22 | 2013-09-04 | 欧文蒙福德有限公司 | Autoinjector having two springs for biasing the shroud forwardly |
| WO2014001319A1 (en) * | 2012-06-29 | 2014-01-03 | Novo Nordisk A/S | Spring driven injection device |
| CN109847151A (en) * | 2018-12-27 | 2019-06-07 | 宁波美生医疗器材有限公司 | A kind of safety-type injection device, syringe and its assemble method |
| CN214860063U (en) * | 2021-07-02 | 2021-11-26 | 苏州嘉树医疗科技有限公司 | Internal anti-scratching structure suitable for automatic injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113318302B (en) | 2024-04-26 |
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