CN113318302B - Internal scratch-proof structure suitable for automatic injector - Google Patents
Internal scratch-proof structure suitable for automatic injector Download PDFInfo
- Publication number
- CN113318302B CN113318302B CN202110753045.6A CN202110753045A CN113318302B CN 113318302 B CN113318302 B CN 113318302B CN 202110753045 A CN202110753045 A CN 202110753045A CN 113318302 B CN113318302 B CN 113318302B
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- strip
- auxiliary spring
- shaped guide
- structures
- main body
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- 230000007704 transition Effects 0.000 claims description 12
- 229940090047 auto-injector Drugs 0.000 claims description 7
- 230000003678 scratch resistant effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 241000180587 Pinnidae Species 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 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
- 238000010304 firing Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram 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
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009466 transformation Effects 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
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010999 medical injection Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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 scratch-proof 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 connection clamping groove is arranged on the bearing main body, a plurality of supporting structures are arranged on the bearing main body, one ends of the auxiliary springs are in contact with the supporting structures, the supporting structures comprise strip-shaped rib bodies, the strip-shaped rib bodies comprise strip-shaped guide structures, and one ends of the strip-shaped guide structures extend to form convex contact sheets. Therefore, due to the existence of the supporting structure, when the auxiliary spring is assembled into the upper pen shell to which the automatic injector belongs, the inner wall of the upper pen shell cannot cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the associated components of the auxiliary spring are prevented from triggering failure states, and the auxiliary spring can be prevented from deflecting. The strip-shaped guide structure and the convex contact piece structure are adopted, so that the normal compression and the pushing of the auxiliary spring are not influenced.
Description
Technical Field
The invention relates to a self-administration system structure, in particular to an internal scratch-proof structure suitable for an automatic injector.
Background
The existing disposable automatic injector has very complex design principle, so that parts are numerous and are generally more than 15, the reliability is low, the assembly difficulty is high, and the final product cost is too high.
CN110237366a discloses a medical injection device, including urceolus and pen cap, the one end of urceolus is provided with detachable medicine storehouse, be provided with removable standard card formula medicine bottle in the medicine storehouse, the inside of urceolus is close to the one end of medicine storehouse and is provided with fixed cover, the inside axial displacement of fixed cover is provided with the push rod seat, the inside of push rod seat is provided with the transmission ring that can mesh with the tip of transfer line, but the ratchet ring of axial slip has been cup jointed in the outside of transfer line, the one end terminal surface and the inside unidirectional engagement of urceolus of ratchet ring, the other end axial of ratchet ring is provided with first spring, the one end axial of push rod seat is provided with the push rod seat spring that withstands with the urceolus, the one end of push rod passes the push rod seat and stretches into in the standard card formula medicine bottle and link to each other with the ejector pad.
CN109999272a discloses a disposable adjustable injection device for insulin injection, including visor, disposable syringe needle, refill cover, main body casing, refill and adjusting part, the one end of main body casing is provided with the second boss, the externally mounted of second boss has the refill cover, the screw thread groove has been seted up to the one end of refill cover, the external screw thread and the mutual spiro union of screw thread groove of second boss, the other end of refill cover is provided with first boss, there is disposable syringe needle outside of first boss through threaded connection, the inside grafting of disposable syringe needle has the steel needle, the internally mounted of refill cover has the refill, the visor has been cup jointed to the outside of refill cover, the other end of main body casing is provided with adjusting part, the internally mounted of main body casing has fixed sleeve, the outside protrusion of one end of fixed sleeve 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 lancing device comprising a separation sleeve, preloaded lancing spring means and lancing retention means, wherein the preloaded lancing spring means is capable of acting on the separation sleeve and thereby on the container carrier to cause sliding movement of the container and needle, and the lancing retention means is capable of retaining the lancing spring means in a loaded state; injection device comprising a plunger rod, preloaded injection spring means and injection holding means, wherein the plunger rod is arranged as a stopper acting in the medicament container, the preloaded injection spring means being capable of acting on the plunger rod such that the stopper is displaced within the container, and the injection holding means being capable of holding the injection spring means in a loaded state; retraction means comprising a preloaded retraction spring and a 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 activation device which can act on a puncture trigger device which is arranged on the separation sleeve for disconnecting the puncture holding device; an injection triggering 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 a 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 a damping means comprising a compartment containing a volume of a highly viscous liquid and being defined in part by an outer surface of the plunger rod and an inner surface of the cap, wherein the compartment is arranged with a channel through which the liquid is forced only when the injection sequence is initiated, such that the volume within the compartment decreases with the movement of the plunger rod in the container during the whole injection sequence and thereby generates a damping shear force.
However, existing autoinjectors have been prone to unnecessary axial rotation during compression when the secondary spring is in use. Therefore, an acting force different from the direction of firing injection is generated, and smooth firing is affected. If the auxiliary spring is constrained by necessity, too many auxiliary structures are needed to be additionally arranged, and the auxiliary spring is subjected to other extra external stress, so that the firing force is too large, and the improper impact of the PFS component is easy to cause.
In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create an internal scratch-resistant structure suitable for an automatic injector, which has a more industrially useful value.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an internal scratch-proof structure suitable for an automatic injector.
The invention relates to an internal scratch-proof 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 connection clamping groove is formed in the bearing main body, wherein: the bearing 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 guide structures, and one ends of the strip-shaped guide structures extend to form protruding contact pieces.
Further, the internal scratch-preventing structure suitable for the automatic injector is provided, wherein a transition slope is distributed between the strip-shaped guiding structure and the convex contact piece, and the angle of the transition slope is 100-160 degrees.
Still further, one of the above-described internal anti-scratch structures for an auto-injector, wherein the transition ramp has an angle of 120 degrees.
Still further, the above-described internal anti-scratch structure for an automatic injector, wherein the width of the strip-shaped guide structure is 1 to 2 mm.
Still further, the above-described internal anti-scratch structure for an automatic injector, wherein the height of the strip-shaped guide structure is 0.3 to 1mm.
Further, the inner scratch-proof structure for an automatic injector is provided, 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.
Further, one of the above-mentioned internal anti-scratch structures for an automatic injector, wherein the support structure has two mirror images distributed on the outer side wall of the carrier body.
Still further, the above-mentioned internal scratch-preventing structure for an automatic injector, wherein the four support structures are equidistantly distributed on the outer sidewall of the carrying body.
By means of the scheme, the invention has at least the following advantages:
1. Through the existence of the supporting structure, when the auxiliary spring is assembled into the upper pen shell to which the automatic injector belongs, the inner wall of the upper pen shell can not cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the associated components of the auxiliary spring are prevented from triggering failure states, and the auxiliary spring can be prevented from deflecting.
2. The supporting structure adopts a strip-shaped guiding structure and a convex contact piece structure, so that the normal compression and the pushing of the auxiliary spring are not influenced.
3. The whole structure is simple, the traditional bearing main body can be matched for use only by transformation and replacement, and the implementation cost is low.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a carrier body.
Fig. 2 is a schematic diagram of the combination of a secondary spring and a support structure.
Fig. 3 is a schematic diagram of the assembly of the secondary spring with the upper pen casing.
The meaning of each reference numeral in the figures is as follows.
1. Bearing main body 2 auxiliary spring
3.4 Strip-shaped guiding structure for power card engagement slot
5. Convex contact piece 6 transition slope
7. Pen-feeding shell
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The utility model provides a structure is scratched in inside suitable for automatic injector of fig. 1 through 3, including bearing main part 1, bear main part 1 overcoat and be equipped with auxiliary spring 2, bear and be provided with power card on the main part 1 and link up draw-in groove 3, its difference lies in: in order to achieve an effective correction of the movement path of the springs during use, preventing them from being unnecessarily distorted or compressed, 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 the secondary spring 2 is assembled into the upper pen casing 7 of the automatic injector, the inner wall of the upper pen casing 7 does not cause improper compression or displacement of the secondary spring 2 when the secondary spring 2 is scratched, and the supporting structure adopted by the invention comprises a strip-shaped rib body. The strip-shaped rib body comprises a strip-shaped guide structure 4, and one end of the strip-shaped guide structure 4 extends to form a convex contact piece 5. In this way, the contact area with the secondary spring 2 can be increased, and abnormal torsional stress can be transferred by virtue of the supporting structure, so that excessive action on the secondary spring 2 is avoided. Meanwhile, as more parts of the auxiliary spring 2 are contacted with the supporting structure during use, interference fit-like contact can be generated, and even when the auxiliary spring 2 scratches the inner wall of the upper pen shell 7, the auxiliary spring can be supported for necessary auxiliary limiting. Of course, the conventional contact friction force does not limit normal injection firing stress and does not affect normal force application firing.
In connection with a preferred embodiment of the invention, a transition slope 6 is distributed between the strip-shaped guide structure 4 and the protruding contact piece 5. In this way, it is ensured that the secondary spring 2 can be contracted smoothly during use and that the guidance of the transition ramp 6 can be applied during movement without local jamming. Meanwhile, the angle of the transition slope 6 is 100 to 160 degrees in consideration of convenience of implementation. Of course, in view of the model sizes of the bearing body 1 and the auxiliary spring 2 adopted by the conventional automatic injectors, the angle of the transition slope 6 is 120 degrees, so that the conventional use requirement can be met. Of course, the actual angle of the transition ramp 6 may be adjusted in sequence for some specific implementation requirements, and is not limited to 100 to 160 degrees.
Further, in order to be able to effectively carry the stresses brought about by the secondary springs 2 during use, the width of the strip-shaped guide formations 4 is 1 to 2mm, while the height of the strip-shaped guide formations 4 is 0.3 to 1 mm. Thus, the conventional manufacturing materials are assembled, and the conventional manufacturing materials cannot be broken or distorted. Of course, in order to perform proper auxiliary limiting on one end of the auxiliary spring 2, a positioning groove may be formed on the protruding contact piece 5, and one end of the auxiliary spring 2 may be in contact with the positioning groove.
In view of practical implementation, in order to effectively bear and guide the rotation stress suffered by the auxiliary spring 2, two supporting structures are adopted, and mirror images are distributed on the outer side wall of the bearing main body 1. Thus, no matter the left half side or the right half side of the auxiliary spring 2 tends to deflect axially, the deviation correcting limit can be realized through the corresponding supporting structure. Of course, for a more optimal implementation, four support configurations may be used with the present invention. In this way, one end of the secondary spring 2 can be guided by the uniform spacing of the four support formations when implemented.
The working principle of the invention is as follows:
With the user's depression, the auto-injector is in the fired state. During this time, the power card begins to push the secondary spring 2 to compress. At this time, by virtue of the existence of the supporting structure, the auxiliary spring 2 can be guided to be compressed smoothly, unnecessary axial rotation can not occur during the compression, the clamping can not occur, and the smooth firing can be realized.
It should be noted that the present invention is exemplified by an automatic injector, and can be applied to various self-administration systems at present, and will not be described herein.
As can be seen from the above text expressions and the accompanying drawings, the invention has the following advantages:
1. When the auxiliary spring is assembled into the upper pen shell of the automatic injector, the inner wall of the upper pen shell cannot cause improper compression or displacement of the auxiliary spring when the auxiliary spring is scratched, the associated components of the auxiliary spring are prevented from triggering failure states, and deflection of the auxiliary spring can be prevented.
2. The supporting structure adopts a strip-shaped guiding structure and a convex contact piece structure, so that the normal compression and the pushing of the auxiliary spring are not influenced.
3. The whole structure is simple, the traditional bearing main body can be matched for use only by transformation and replacement, and the implementation cost is low.
Furthermore, the description of the present invention as to the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings is for convenience of description and simplification of the description only, and is not intended to indicate or imply that the apparatus or configuration referred to 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 defining a "primary" or "secondary" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a number" is two or more, unless explicitly defined otherwise.
Also, the terms "first," "second," and the like 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "connected," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components or interaction relationship between the two components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. And it may be directly on another 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 is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a structure is scratched in inside suitable for automatic injector, including bearing the main part, it is equipped with the auxiliary spring to bear the main part overcoat, it links up the draw-in groove to be provided with the power card in the main part to bear, its characterized in that: the bearing 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 guide structures, one ends of the strip-shaped guide structures extend to protruding contact pieces, and the other ends of the strip-shaped guide structures extend to the tail ends of the bearing body;
Transition slopes are distributed between the strip-shaped guide structures and the convex contact pieces, and the angles of the transition slopes are 100-160 degrees;
And the convex contact piece is provided with a positioning groove, and one end of the auxiliary spring is contacted with the positioning groove.
2. An internal scratch resistant structure for an autoinjector according to claim 1, wherein: the angle of the transition slope is 120 degrees.
3. An internal scratch resistant structure for an autoinjector according to claim 1, wherein: the width of the strip-shaped guide structure is 1 to 2 mm.
4. An internal scratch resistant structure for an autoinjector according to claim 1, wherein: the height of the strip-shaped guide structure is 0.3 to 1 mm.
5. An internal scratch resistant structure for an autoinjector according to claim 1, wherein: the number of the supporting structures is two, and the mirror images are distributed on the outer side wall of the bearing main body.
6. An internal scratch resistant structure for an autoinjector according to claim 1, wherein: the support structures are four, and are distributed on the outer side wall of the bearing main 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 CN113318302A (en) | 2021-08-31 |
| CN113318302B true 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113318302B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005017477A1 (en) * | 2005-02-18 | 2006-08-31 | Tecpharma Licensing Ag | Spring in or for an injection device |
| EP2468328A1 (en) * | 2010-12-21 | 2012-06-27 | Sanofi-Aventis Deutschland GmbH | Auto-injector |
-
2021
- 2021-07-02 CN CN202110753045.6A patent/CN113318302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
|---|---|
| CN113318302A (en) | 2021-08-31 |
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