CN203620007U - Needle base structure used for pull-back safe self-destruction syringes with fixed needles - Google Patents
Needle base structure used for pull-back safe self-destruction syringes with fixed needles Download PDFInfo
- Publication number
- CN203620007U CN203620007U CN201320715307.0U CN201320715307U CN203620007U CN 203620007 U CN203620007 U CN 203620007U CN 201320715307 U CN201320715307 U CN 201320715307U CN 203620007 U CN203620007 U CN 203620007U
- Authority
- CN
- China
- Prior art keywords
- needle stand
- annular
- ring
- type locking
- elastic buffer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 244000208734 Pisonia aculeata Species 0.000 title abstract 3
- 238000012856 packing Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a needle base structure used for pull-back safe self-destruction syringes with fixed needles. The needle base structure is characterized in that a needle assembly column is formed at the upper part of an upper elastic buffer needle base, and the lower part of the upper elastic buffer needle base is in a cylinder shape; an annular elastic sealing stop collar is formed on the outer wall of the lower part of the upper elastic buffer needle base; an annular elastic buffing space is formed between the inner wall of the annular elastic sealing stop collar and the outer part of the lower part of the upper elastic buffering needle base; a connecting part is formed between the lower part of the annular elastic sealing stop collar and the outer wall of the lower part of the upper elastic buffering needle base; an annular reversing step is formed at the upper elastic buffering needle base at the lower part of the connecting part. The utility model discloses a needle base structure used for pull-back safe self-destruction syringes with the fixed needles, and the product has a reasonable whole structure, and is designed skillfully. The structure is convenient to operate and use, stable in operating state, easy to popularize and use. Compared with the existing structure in design and technology, the structure disclosed by the utility model has the characteristics of remarkable technological breakthrough, and prominent security and practicability.
Description
Technical field
This utility model relates to the technical field of medical apparatus and instruments, specifically a kind of needle stand structure for haulback type locking pin safe self-breaking syringe, particularly its mechanical connecting structure.
Background technology
Documents, the patent No.: ZL201120188751.2, the applying date: 2011.06.07, notification number: CN202105269U, patentee: doubly pacify Depew medical science and technology (Shanghai) Co., Ltd., this case discloses " a kind of interior needle stand structure for safety self-destructing syringe ", comprise interior needle stand body, interior needle stand body lower end offers the latch well of pulling back, it is characterized in that: described interior needle stand body place is provided with needle tubing pedestal, with form with the spacing pedestal of the into a single integrated structure elastic packing of needle tubing pedestal, both integral formula monomer structures, between the spacing pedestal of needle tubing pedestal and elastic packing, form circular step or ring-type is domatic, the spacing base-plates surface of elastic packing offers ring-type buffer gap, the spacing base outer wall of the elastic packing place in outside, ring-type buffer gap forms the spacing holding section of annular seal.
In existing safety injector structure, there is the function of utilizing barbed body to realize needle retractable, realize safety injection.General barbed body is metalwork or working of plastics.Metalwork need to be processed and coordinates with core bar or assemble, complex manufacturing technology, difficulty is large and stability is not good, has not only increased manufacturing procedure and manufacturing cost, and metalwork itself and assembling process thereof can increase the uncertainties such as the hidden danger of product aspect safety and product quality.Structurally still there is defect or have incomplete place in existing plastics barb member, therefore causes product in use to have potential safety hazard or security breaches.The design of existing plastics back-off part, though can realize the syringe needle function of pulling back, in use, syringe needle is still in normal trace after being pulled back, syringe needle is likely again released and is caused user by the risk of secondary damage.
In addition, all there is a same difficult problem in existing single needle seat pumpback formula safety self-destructing syringe or safety injector, is exactly how to solve to engage between interior needle stand and cylindrical shell stablize and reach certain intensity to meet stability requirement; Meanwhile, in the time of pumpback needle stand, required pulling force can not be too greatly with easy to use.Although rigid fit structure can reach interior needle stand and the stable locking effect of cylinder inboard wall, is difficult to or even cannot reaches demand easy to use simultaneously.The unstability that plastic material itself exists and the characteristic that is subject to variation of ambient temperature can cause the product stability extreme difference of hard fit structure, and in production process, quality and precision are all difficult to control, and almost cannot realize batch production.
Moreover, substantially can realize the stability requirement between cylindrical shell although improve the interior needle stand structure of money in documents, but between interior needle stand and injector cartridge, need fitting tight glue ring could realize sealing function, liquor residue amount when the mode of sealed rubber ring setting and position directly affect the sealing effectiveness of syringe and inject, after existing interior needle stand sealed rubber ring assembling, in transportation and use procedure, can be subjected to displacement, and liquor residue amount is also not satisfactory.
In sum, still need the latch-up structure between existing pulling type syringe needle stand and cylindrical shell and sealed rubber ring assembly structure to further improve, further to improve product safety and stability in use, reduce liquor residue amount, reach simplification manufacturing procedure simultaneously, reduce the object of manufacturing cost.
Summary of the invention
The purpose of this utility model is to provide a kind of needle stand structure for haulback type locking pin safe self-breaking syringe, this syringe double needle seat can and injector cartridge between mutually lock by elastic buffer snap fastener.The ingenious utilization engaging buffer gap at position and the plasticity of engaging part, perfection realizes both lockings and departs from effect.This elastic buffer snap fastener can be arranged at the place of needle stand up and down of double needle seat, also can be arranged at cylinder inboard wall place; Shape, size or the thickness of elastic card zoarium and position can convert with product global design; But no matter adopt which kind of mode, as long as form corresponding and elastic buffer snap fastener that cooperatively interact at interior needle stand or cylinder inboard wall place simultaneously.The piston boom end coordinating is with it provided with the asymmetric locking piece with spring function, and this locking piece can lock by engaging mode mutually with the lower needle stand inner chamber of syringe double needle seat.Pulled back in injector cartridge time when needle stand, under the strength effect of Asymmetric Elasticity structure, needle stand can stressedly be taken advantage of a situation and be turned to a lateral deviation; Therefore entry needle also can swing to cylinder inboard wall one side to nearly 45 angular direction; When entry needle is return after cylindrical shell completely, syringe needle can be locked by cylindrical shell cervical region, cause thus entry needle and needle stand again to be released outside cylindrical shell, effectively prevent that syringe needle is by the secondary damage that release causes again, realize the safety self-destruct operation of syringe, simultaneously, between upper and lower needle stand, form sealed rubber ring department of assembly, make to seal assembly structure more stable, invaginating glue ring assembly structure can effectively prevent seepage and further reduce liquor residue amount, overcome the shortcoming and defect existing in prior art.
To achieve these goals, the technical solution of the utility model is: a kind of needle stand structure for haulback type locking pin safe self-breaking syringe, it comprises needle stand and the lower needle stand that is positioned at bottom on superposed elastic buffer, both link into an integrated entity by socket engaging mode, it is characterized in that: on described elastic buffer, needle tubing assembling post is formed at needle stand top, on elastic buffer, needle stand bottom is cylindrical, on elastic buffer, outer wall place, needle stand bottom forms the spacing ring body of annular elastic packing, on the spacing inner wall of ring body of this elastic packing and elastic buffer, between the outer wall of needle stand bottom, form cyclic spring buffer gap, on elastic packing spacing ring body bottom and elastic buffer, needle stand bottom outer wall forms connecting portion, on the elastic buffer of this connecting portion bottom, needle stand place forms annular reverse step, the spacing ring body of elastic packing forms annular resilient seal limiting section near the outside place of top edge, this curved crowned in annular resilient seal limiting section surface, the external wall of the elastic packing spacing ring place of annular resilient seal limiting section below forms annular engaging depressed part, described lower needle stand is also cylindrical, lower needle stand bottom forms spacing slotting ring near outer edge, between this spacing slotting ring and lower needle stand outer wall, form annular gap, on elastic buffer, the lower end of needle stand is positioned at annular gap, between above-mentioned reverse step and spacing slotting ring upper end, form annular O-ring seal department of assembly, O-ring seal is positioned at this annular O-ring seal department of assembly, lower needle stand inner chamber hollow, the inwall place of hollow cavity forms ring-type locking ring, this ring-type locking ring upper surface forms annular lock groove, the lower surface of ring-type locking ring forms annular guiding surface, between the inclined-plane of this annular guiding surface and horizontal plane, form the angle of 5 degree-85 degree, between the inclined-plane of above-mentioned annular guiding surface and horizontal plane, form the angle of 5 degree-85 degree, the internal diameter of ring-type locking ring is 1mm-15mm, the inwall of ring-type locking ring has elasticity under the effect of annular lock groove 14.
The utility model discloses a kind of needle stand structure for haulback type locking pin safe self-breaking syringe, between upper needle stand and lower needle stand, be split type assembly structure or single injection-molded, outer wall place between upper and lower needle stand forms sealed rubber ring department of assembly, make to seal assembly structure more stable, invaginating glue ring assembly structure can effectively prevent seepage and further reduce liquor residue amount, be provided with the asymmetric locking piece of pulling back with spring function with the end of the matching used syringe core rod of needle stand; Asymmetry respective outer side edges spring function design, can guarantee that this locking piece can insert needle stand inner chamber under elastic buffer smoothly, and utilize the function of its elastic dilatation, realizes engaging and locking of barb parts and needle stand under elastic buffer.Because annular lock groove design also has elastic buffer characteristic, when with the asymmetric locking piece of pulling back (barb parts) in the time that advanced state is touched, both can produce relative buffering distortion, be convenient to the asymmetric locking piece of pulling back (barb parts) and snap in the locked groove of ring-type locking ring; In the time of locking piece pumpback and the locked groove of ring-type locking ring mutually lock.Pulled back in injector cartridge time when needle section, under the force environment of asymmetric active force, needle section entirety can stressedly turn to a lateral deviation, and therefore entry needle can swing to cylinder inboard wall one side to nearly 45 angular direction; Return completely after cylindrical shell when entry needle, syringe needle can be locked by cylindrical shell cervical region, causes thus entry needle and needle stand again to be released outside cylindrical shell, effectively prevents that syringe needle from again being released and causing secondary damage, really realizes the safety self-destruct operation of syringe.In the time that the present invention specifically implements, the described Asymmetric Elasticity locking piece of pulling back is a plastics barbed body.This plastics barbed body adopts the design principle of asymmetry and the ingenious cooperation of elastomer structure, uses specific angle and size design, makes barb body possess elastic buffer lock function.Above-mentioned Asymmetric Elasticity pull back locking piece and core bar into a single integrated structure, global facility adopts a die sinking molding, without separately processing or follow-up assembling, effectively reduces manufacturing cost, has simplified assembly technology, has reduced assembly process.The pull back snap lock effect of part and needle stand inner chamber of the Asymmetric Elasticity of core bar end is splendid, and product reasonable integral structure, is skillfully constructed, and operation is used simple, and stable working state, is easy to apply.Compare existing product design and technology, in design, there is significant technical breakthrough, and there is outstanding safety and practicality feature.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is needle stand structure schematic diagram on this utility model elastic buffer.
Fig. 3 is needle stand structure schematic diagram under this utility model.
Fig. 4 is this utility model using state figure.
The specific embodiment
With reference to the accompanying drawings, this utility model is further described.
This utility model is a kind of needle stand structure for haulback type locking pin safe self-breaking syringe, as shown in fig. 1, it comprises needle stand 1 and the lower needle stand 2 that is positioned at bottom on superposed elastic buffer, both link into an integrated entity by socket engaging mode, it is characterized in that: on described elastic buffer, needle tubing assembling post 3 is formed at needle stand 1 top, on elastic buffer, needle stand 1 bottom is cylindrical, on elastic buffer, needle stand 1 outer wall place, bottom forms the spacing ring body 4 of annular elastic packing, on spacing ring body 4 inwalls of this elastic packing and elastic buffer, between needle stand 1 bottom outer wall, form cyclic spring buffer gap 5, on elastic packing spacing ring body 4 bottoms and elastic buffer, needle stand 1 bottom outer wall forms connecting portion 6, on the elastic buffer of these connecting portion 6 bottoms, needle stand 1 place forms annular reverse step 7, the spacing ring body 4 of elastic packing forms annular resilient seal limiting section 8 near the outside place of top edge, the surperficial curved crowned of this annular resilient seal limiting section 8, the spacing ring body of the elastic packing 4 outer wall places of annular resilient seal limiting section 8 belows form annular engaging depressed part 9, described lower needle stand 2 is also cylindrical, lower needle stand 2 bottoms form spacing slotting ring 10 near outer edge, between this spacing slotting ring 10 and lower needle stand 2 outer walls, form annular gap 11, on elastic buffer, the lower end of needle stand 1 is positioned at annular gap 11, between above-mentioned reverse step 7 and spacing slotting ring 10 upper ends, form annular O-ring seal department of assembly 12, O-ring seal 17 is positioned at this annular O-ring seal department of assembly 12, lower needle stand 2 inner chamber hollows, the inwall place of hollow cavity forms ring-type locking ring 13, these ring-type locking ring 13 upper surfaces form annular lock groove 14, the lower surface of ring-type locking ring 13 forms annular guiding surface 15, between the inclined-plane of this annular guiding surface 15 and horizontal plane, form the angle of 5 degree-85 degree, this annular guiding surface has guide effect to the asymmetric locking piece of pulling back (barb parts) of core bar end, guide barb parts to deform in the time slipping into needle stand inner chamber simultaneously, simultaneously, in the time that needle stand is drawn into cylinder lumen, can deflect to a side, requisite space when annular guiding surface 18 can reserve deflection.The angle that forms 5 degree-85 degree between the inclined-plane of above-mentioned annular guiding surface 15 and horizontal plane, the internal diameter of ring-type locking ring 13 is 1mm-15mm, the inwall of ring-type locking ring 13 has elasticity under the effect of annular lock groove 14.
In the specific implementation, needle stand 1 lower lumen hollow on described elastic buffer, the inwall place of this hollow cavity forms annular engaging indent ring 18.
In the specific implementation, described lower needle stand 2 outer walls form and engage the annular engaging bulge loop 16 that indent ring 18 coordinates with annular.
In the specific implementation, the cross section of described annular lock groove 14 is approximate triangular in shape.
In the specific implementation, the gap width of described cyclic spring buffer gap 5 is 0.3mm-6.8mm, and the degree of depth is 1mm-8.6mm, and the thickness range of the spacing ring body 4 of elastic packing is 0.06mm-8mm.
In the specific implementation, the drop height between described annular resilient seal limiting section 8 peaks and the annular minimum point that engages depressed part 9 is 0.1mm-8mm.
In the specific implementation, on described elastic buffer, between needle stand 1 and lower needle stand 2, be split type assembly structure or single injection-molded structure.
In the specific implementation, the elastic buffer snap fastener being made up of the spacing ring body of elastic packing can be arranged at the place of needle stand up and down of double needle seat, also can be arranged at cylinder inboard wall place, and elastomeric shape, size, thickness and position can convert with the global design of product; But no matter adopt which kind of mode, as long as form corresponding and elastic buffer snap fastener that cooperatively interact at interior needle stand or cylinder inboard wall place simultaneously.The spacing ring body of elastic packing can be by implemented in many forms; it can only be not the ring body of a sealing; as the ring body that disconnects the ring body at several places or formed by multiple elasticity holding section, should say that the structure as long as connecting needle stand and cylindrical shell by elastomeric element by elasticity engaging mode all should be considered as belonging to protection domain of the present utility model.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that the concrete enforcement of this utility model is confined to above-mentioned these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. the needle stand structure for haulback type locking pin safe self-breaking syringe, it comprises needle stand on superposed elastic buffer (1) and is positioned at the lower needle stand (2) of bottom, both link into an integrated entity by socket engaging mode, it is characterized in that: needle tubing assembling post (3) is formed at needle stand on described elastic buffer (1) top, needle stand on elastic buffer (1) bottom is cylindrical, outer wall place, needle stand on elastic buffer (1) bottom forms the spacing ring body of annular elastic packing (4), on the spacing ring body of this elastic packing (4) inwall and elastic buffer, between the outer wall of needle stand (1) bottom, form cyclic spring buffer gap (5), on the spacing ring body of elastic packing (4) bottom and elastic buffer, needle stand (1) bottom outer wall forms connecting portion (6), on the elastic buffer of this connecting portion (6) bottom, needle stand (1) locates to form annular reverse step (7), the spacing ring body of elastic packing (4) forms annular resilient seal limiting section (8) near the outside place of top edge, the surperficial curved crowned of this annular resilient seal limiting section (8), the spacing ring body of elastic packing (4) the outer wall place of annular resilient seal limiting section (8) below forms annular engaging depressed part (9), described lower needle stand (2) is also cylindrical, lower needle stand (2) bottom forms spacing slotting ring (10) near outer edge, between this spacing slotting ring (10) and lower needle stand (2) outer wall, form annular gap (11), the lower end of needle stand on elastic buffer (1) is positioned at annular gap (11), between above-mentioned reverse step (7) and spacing slotting ring (10) upper end, form annular O-ring seal department of assembly (12), O-ring seal (17) is positioned at this annular O-ring seal department of assembly (12), lower needle stand (2) inner chamber hollow, the inwall place of hollow cavity forms ring-type locking ring (13), this ring-type locking ring (13) upper surface forms annular lock groove (14), the lower surface of ring-type locking ring (13) forms annular guiding surface (15), between the inclined-plane of this annular guiding surface (15) and horizontal plane, form the angle of 5 degree-85 degree, the internal diameter of ring-type locking ring (13) is 1mm-15mm, the inwall of ring-type locking ring (13) has elasticity under the effect of annular lock groove (14).
2. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, is characterized in that: needle stand on described elastic buffer (1) lower lumen hollow, the inwall place of this hollow cavity forms annular engaging indent ring (18).
3. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, is characterized in that: described lower needle stand (2) outer wall forms and engages the annular engaging bulge loop (16) that indent ring (18) coordinates with annular.
4. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, is characterized in that: the cross section of described annular lock groove (14) is approximate triangular in shape.
5. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, it is characterized in that: the gap width of described cyclic spring buffer gap (5) is 0.3mm-6.8mm, the degree of depth is 1mm-8.6mm, and the thickness of the spacing ring body of elastic packing (4) is 0.06mm-8mm.
6. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, is characterized in that: the drop height between described annular resilient seal limiting section (8) peak and the annular minimum point that engages depressed part (9) is 0.1mm-8mm.
7. a kind of needle stand structure for haulback type locking pin safe self-breaking syringe according to claim 1, is characterized in that: between needle stand on described elastic buffer (1) and lower needle stand (2), be split type assembly structure or single injection-molded structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715307.0U CN203620007U (en) | 2013-10-18 | 2013-11-14 | Needle base structure used for pull-back safe self-destruction syringes with fixed needles |
| PCT/CN2014/001012 WO2015070525A1 (en) | 2013-10-18 | 2014-11-13 | Needle base structure for pulled-back fixed-needle safe self-destroying syringe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642716.2 | 2013-10-18 | ||
| CN201320642716 | 2013-10-18 | ||
| CN201320715307.0U CN203620007U (en) | 2013-10-18 | 2013-11-14 | Needle base structure used for pull-back safe self-destruction syringes with fixed needles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620007U true CN203620007U (en) | 2014-06-04 |
Family
ID=50806541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320715307.0U Expired - Lifetime CN203620007U (en) | 2013-10-18 | 2013-11-14 | Needle base structure used for pull-back safe self-destruction syringes with fixed needles |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203620007U (en) |
| WO (1) | WO2015070525A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070523A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back fixed-needle safe self-destroying syringe |
| WO2015070525A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Needle base structure for pulled-back fixed-needle safe self-destroying syringe |
| CN105496567A (en) * | 2016-01-21 | 2016-04-20 | 钱良 | Protective cover for gynecology department |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6391008B1 (en) * | 2000-08-15 | 2002-05-21 | Hsi-Chin Tsai | Safety hypodermic syringe |
| US20070197965A1 (en) * | 2006-02-21 | 2007-08-23 | Chih-Kuang Hsu | Safety syringe |
| CN102652849B (en) * | 2011-03-02 | 2013-12-25 | 张淑茗 | Needle base assembly rotating and retracting structure of safety injector |
| CN202892570U (en) * | 2012-02-29 | 2013-04-24 | 王祖扬 | A need-pullback-type needle-replaceable safe self-destruction syringe |
| CN202569091U (en) * | 2012-02-29 | 2012-12-05 | 王祖扬 | Sleeve-type pullback locking assembly for pullback safety self-destruction syringe |
| CN203620007U (en) * | 2013-10-18 | 2014-06-04 | 王祖扬 | Needle base structure used for pull-back safe self-destruction syringes with fixed needles |
| CN203634589U (en) * | 2013-10-18 | 2014-06-11 | 王祖扬 | Pullback type fixing needle safety auto-disable syringe |
-
2013
- 2013-11-14 CN CN201320715307.0U patent/CN203620007U/en not_active Expired - Lifetime
-
2014
- 2014-11-13 WO PCT/CN2014/001012 patent/WO2015070525A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070523A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back fixed-needle safe self-destroying syringe |
| WO2015070525A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Needle base structure for pulled-back fixed-needle safe self-destroying syringe |
| CN105496567A (en) * | 2016-01-21 | 2016-04-20 | 钱良 | Protective cover for gynecology department |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015070525A1 (en) | 2015-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202569090U (en) | Needle-pulling-back safe self-destructive syringe | |
| CN202892570U (en) | A need-pullback-type needle-replaceable safe self-destruction syringe | |
| CN203634589U (en) | Pullback type fixing needle safety auto-disable syringe | |
| CN202569091U (en) | Sleeve-type pullback locking assembly for pullback safety self-destruction syringe | |
| CN203620007U (en) | Needle base structure used for pull-back safe self-destruction syringes with fixed needles | |
| CN203620013U (en) | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles | |
| CN103285464B (en) | Needle head pull-back type needle-replaceable safe self-destruction syringe | |
| CN102631730B (en) | Ejection-type self-destructive syringe | |
| MX2010001974A (en) | Safety syringe with plunger locking means. | |
| CN203829420U (en) | Syringe needle pull-back type safety self-destruction injection syringe | |
| CN202569092U (en) | Needle seat structure used for safety self-destruction syringe | |
| CN103285466B (en) | Needle head pull-back type safe self-destruction syringe | |
| CN202777315U (en) | Replaceable needle inner needle seat structure for safe self-destructing type syringe | |
| CN203408310U (en) | Inner needle seat structure for retractable safety auto-disable syringe | |
| CN202777324U (en) | Safe self-destructing type syringe capable of changing needle | |
| CN202376562U (en) | Cylinder structure used for safe self-destruction type syringe | |
| CN201987989U (en) | Mandrel locking structure | |
| KR20190001038U (en) | Smart micro filter needle assembly | |
| CN203539808U (en) | Core rod structure for drawing-back safe self-destruction type syringe | |
| CN103432656B (en) | A kind of needle for inserting bottle | |
| CN104548277B (en) | safety syringe | |
| CN202569093U (en) | Inner needle seat structure for replaceable needle for safety self-destruction syringe | |
| CN103285465A (en) | Core rod structure for pullback-type safe self-destructive syringe | |
| CN102813982B (en) | Inner needle seat structure for safety self-destruction syringe | |
| CN206777589U (en) | A kind of syringe for sodium hyaluronate injection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220512 Address after: 401346 1-1 and 1-2, building 1, No. 16, Shigui Avenue, Jieshi Town, Banan District, Chongqing Patentee after: Chongqing pharmaceutical group Weixun Medical Technology Co.,Ltd. Address before: 200336 Room 301, No. 25, Lane 99, huangjincheng Road, Changning District, Shanghai Patentee before: Wang Zuyang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |