CN203620014U - Pullback needle replaceable safe self-destruction injector - Google Patents
Pullback needle replaceable safe self-destruction injector Download PDFInfo
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- CN203620014U CN203620014U CN201320715223.7U CN201320715223U CN203620014U CN 203620014 U CN203620014 U CN 203620014U CN 201320715223 U CN201320715223 U CN 201320715223U CN 203620014 U CN203620014 U CN 203620014U
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- 244000208734 Pisonia aculeata Species 0.000 title abstract 3
- 238000012856 packing Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 210000002435 tendon Anatomy 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction 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
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- 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
- A61M5/3221—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
-
- 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
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (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 utility model discloses a pullback needle replaceable safe self-destruction injector which comprises a syringe body, wherein the syringe body is internally provided with a core bar; the part, close to the upper end part, of the core bar is connected with a rubber plug in a sleeving manner; a syringe neck at the upper end part of the syringe body is internally provided with a needle replaceable elastic cushion upper needle stand located at the upper part and a lower needle stand located at the lower part; and the upper needle stand is connected with the lower needle stand into a whole in a sleeving and clamping manner. The pullback needle replaceable safe self-destruction injector is characterized in that a needle stand sleeve column with the taper of 6:100 is formed at the upper part of the needle replaceable elastic cushion upper needle stand. The injector is reasonable in overall structure, ingenious in conception, simple to operate and use, stable in working state and easy to popularize and apply. Compared with the existing product design and technology, the injector has significant technological breakthrough in design and has the characteristics of prominent safety and practicability.
Description
Technical field
This utility model relates to the technical field of medical apparatus and instruments, specifically a kind of haulback type needle-replaceable safety self-destruction syringe, particularly its mechanical connecting structure.
Background technology
Documents, the patent No.: ZL201210049628.1, the applying date: 2012.02.29, applicant: Wang Zuyang, this case discloses " a kind of syringe needle return type safe self-destroying syringe ", comprise cylindrical shell, in the cylinder neck of described cylindrical shell end, be provided with needle stand body, in cylindrical shell, be provided with core bar, core bar is provided with plug near end, it is characterized in that: described needle stand body top is placed in a neck, needle stand body stage casing forms elastic packing limiting section, needle stand body bottom and the jacket-type locked component of pulling back is connected, elastic packing limiting section surface offers ring-type buffer gap, the elastic packing limiting section outer wall place in outside, ring-type buffer gap forms the spacing holding section of annular seal, core bar end is provided with Asymmetric Elasticity and locks the part of pulling back.
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 traditional single needle seat back drawing type safety self-breaking 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 syringe construction 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 haulback type needle-replaceable safety self-destruction 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, and shape, size, thickness or the position of elastic buffer body 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 haulback type needle-replaceable safety self-destruction syringe, it comprises cylindrical shell, in cylindrical shell, be provided with core bar, core bar is socketed with plug near upper end, in the cylinder neck of cylindrical shell upper end, be provided with needle stand and the lower needle stand that is positioned at bottom on superposed capable of changing needle elastic buffer, both link into an integrated entity by socket engaging mode, it is characterized in that: on described capable of changing needle elastic buffer, the needle stand sleeve column of 6:100 tapering is formed at needle stand top, the outside internal coiling sleeve that forms of needle stand sleeve column, needle stand sleeve column is positioned at the centre bit of internal coiling sleeve, the inwall of internal coiling sleeve forms female thread, on capable of changing needle elastic buffer, the outer wall place of needle stand forms the spacing ring body of elastic packing, the spacing ring body of this elastic packing and internal coiling sleeve are reverse distribution, connecting portion is formed on the bottom of the bottom of the spacing ring body of elastic packing and internal coiling sleeve, on the spacing inner wall of ring body of elastic packing and capable of changing needle elastic buffer, between needle stand outer wall, form cyclic spring buffer gap, the outer wall place of the spacing ring body of elastic packing forms annular resilient seal limiting section, the curved crowned in annular resilient seal limiting section surface, described lower needle stand is 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 capable of changing needle elastic buffer, needle stand lower end is positioned at annular gap, between the free end of the spacing ring body of above-mentioned elastic packing 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 formation annular guiding surface and horizontal plane, form the angle of 5 degree-85 degree, core bar upper end is provided with the asymmetric locking piece of pulling back, the Breadth Maximum of this asymmetric locking piece of pulling back is greater than ring-type locking ring internal diameter, , 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.
The utility model discloses a haulback type needle-replaceable safety self-destruction 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 the upper and lower needle stand installation diagram of this utility model.
The specific embodiment
With reference to the accompanying drawings, this utility model is further described.
This utility model is a haulback type needle-replaceable safety self-destruction syringe, as shown in fig. 1, it comprises cylindrical shell 1, in cylindrical shell, be provided with core bar 2, core bar is socketed with plug 3 near upper end, in the cylinder neck of cylindrical shell 1 upper end, be provided with needle stand 4 and the lower needle stand 5 that is positioned at bottom on superposed capable of changing needle elastic buffer, both link into an integrated entity by socket engaging mode, it is different from prior art and is: on described capable of changing needle elastic buffer, the needle stand sleeve column 6 of 6:100 tapering is formed at needle stand 4 tops, the outside internal coiling sleeve 7 that forms of needle stand sleeve column 6, needle stand sleeve column 6 is positioned at the centre bit of internal coiling sleeve 7, the inwall of internal coiling sleeve 7 forms female thread 8, on capable of changing needle elastic buffer, the outer wall place of needle stand 4 forms annular resilient seal position-limiting drum 9, this annular resilient seal position-limiting drum 9 is reverse distribution with internal coiling sleeve 7, connecting portion 10 is formed on the bottom of the bottom of annular resilient seal position-limiting drum 9 and internal coiling sleeve 7, on annular resilient seal position-limiting drum 9 inwalls and capable of changing needle elastic buffer, between needle stand 4 outer walls, form cyclic spring buffer gap 11, the outer wall place of annular resilient seal position-limiting drum 9 forms annular resilient seal limiting section 12, the surperficial curved crowned of annular resilient seal limiting section 12, described lower needle stand 5 is cylindrical, lower needle stand 5 bottoms form spacing slotting ring 13 near outer edge, between this spacing slotting ring 13 and lower needle stand 5 outer walls, form annular gap 14, on capable of changing needle elastic buffer, needle stand 4 lower ends are positioned at annular gap 14, between the free end of above-mentioned annular resilient seal position-limiting drum 9 and spacing slotting ring 13 upper ends, form annular O-ring seal department of assembly 15, O-ring seal 16 is positioned at this annular O-ring seal department of assembly 15, lower needle stand 5 inner chamber hollows, the inwall place of hollow cavity forms ring-type locking ring 17, these ring-type locking ring 17 upper surfaces form annular lock groove 18, the lower surface of ring-type locking ring 17 forms annular guiding surface 19, between the inclined-plane of this formation annular guiding surface 19 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, core bar 2 upper ends are provided with the asymmetric locking piece 20 of pulling back, this asymmetric Breadth Maximum of pulling back locking piece 20 is greater than ring-type locking ring 17 internal diameters, , the internal diameter of ring-type locking ring 17 is 1mm-15mm, the inwall of ring-type locking ring 16 has elasticity under the effect of annular lock groove 18.
In the specific implementation, the described asymmetric locking piece 20 of pulling back is for plastics barbed body or metal barbed body, and barbed body can coordinate with the annular lock groove 18 of ring-type locking ring 17 upper surfaces, and the hook end of barbed body locks in annular lock groove 18.The cross section of described annular lock groove 18 is approximate triangular in shape, is convenient to barbed body locking.
In the specific implementation, needle stand 4 lower lumen hollows on described capable of changing needle elastic buffer, the inwall place of this hollow cavity forms annular engaging indent ring 21, and described lower needle stand 5 outer walls form and engage the annular engaging bulge loop 22 that indent ring 21 coordinates with annular.
In the specific implementation, the gap width of described cyclic spring buffer gap 11 is 0.3mm-6.8mm, the degree of depth is 1mm-8.6mm, the thickness range of the spacing ring body 9 of elastic packing is 0.06mm-8mm, the thickness of the spacing ring body 9 of elastic packing can be according to syringe different size and is different, and regulates engaging intensity with this.
In the specific implementation, described internal coiling sleeve 7 outer wall places are equidistantly evenly distributed with some anti-sidespin convex tendons 23, and the upper end of anti-sidespin convex tendon 23 becomes spininess.The cylinder neck inwall place of described cylindrical shell 1 is provided with the spacing draw-in groove 24 of the ring packing coordinating with annular resilient seal limiting section 12.The cylinder neck inwall punishment on the spacing draw-in groove of described ring packing 24 tops is furnished with the anti-sidespin concave bar 25 coordinating with anti-sidespin convex tendon 23.
In the specific implementation, on described capable of changing needle elastic buffer, between needle stand 4 and lower needle stand 5, be split type assembly structure or single injection-molded structure.
In the specific implementation, the cylinder neck internal diameter 0.05mm-0.9mm that the external diameter of described O-ring seal 16 is greater than cylindrical shell 1, can realize optimal seal effect between the two.
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 (11)
1. haulback type needle-replaceable safety self-destruction syringe, it comprises cylindrical shell (1), in cylindrical shell, be provided with core bar (2), core bar is socketed with plug (3) near upper end, the cylinder of cylindrical shell (1) upper end is provided with needle stand (4) on superposed capable of changing needle elastic buffer in neck and is positioned at the lower needle stand (5) of bottom, both link into an integrated entity by socket engaging mode, it is characterized in that: on described capable of changing needle elastic buffer, the needle stand sleeve column (6) of 6:100 tapering is formed at needle stand (4) top, the outside internal coiling sleeve (7) that forms of needle stand sleeve column (6), needle stand sleeve column (6) is positioned at the centre bit of internal coiling sleeve (7), the inwall of internal coiling sleeve (7) forms female thread (8), the outer wall place of needle stand on capable of changing needle elastic buffer (4) forms the spacing ring body of elastic packing (9), the spacing ring body of this elastic packing (9) is reverse distribution with internal coiling sleeve (7), connecting portion (10) is formed on the bottom of the bottom of the spacing ring body of elastic packing (9) and internal coiling sleeve (7), on the spacing ring body of elastic packing (9) inwall and capable of changing needle elastic buffer, between needle stand (4) outer wall, form cyclic spring buffer gap (11), the outer wall place of the spacing ring body of elastic packing (9) forms annular resilient seal limiting section (12), the surperficial curved crowned of annular resilient seal limiting section (12), described lower needle stand (5) is cylindrical, lower needle stand (5) bottom forms spacing slotting ring (13) near outer edge, between this spacing slotting ring (13) and lower needle stand (5) outer wall, form annular gap (14), needle stand on capable of changing needle elastic buffer (4) lower end is positioned at annular gap (14), between the free end of above-mentioned annular resilient seal position-limiting drum (9) and spacing slotting ring (13) upper end, form annular O-ring seal department of assembly (15), O-ring seal (16) is positioned at this annular O-ring seal department of assembly (15), lower needle stand (5) inner chamber hollow, the inwall place of hollow cavity forms ring-type locking ring (17), this ring-type locking ring (17) upper surface forms annular lock groove (18), the lower surface of ring-type locking ring (17) forms annular guiding surface (19), between the inclined-plane of this formation annular guiding surface (19) and horizontal plane, form the angle of 5 degree-85 degree, core bar (2) upper end is provided with the asymmetric locking piece of pulling back (20), the Breadth Maximum of this asymmetric locking piece of pulling back (20) is greater than ring-type locking ring (17) internal diameter, the internal diameter of ring-type locking ring (17) is 1mm-15mm, the inwall of ring-type locking ring (16) has elasticity under the effect of annular lock groove (18).
2. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: the described asymmetric locking piece of pulling back (20) is plastics barbed body or metal barbed body.
3. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: needle stand (4) lower lumen hollow on described capable of changing needle elastic buffer, the inwall place of this hollow cavity forms annular engaging indent ring (21).
4. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: described lower needle stand (5) outer wall forms and engages the annular engaging bulge loop (22) that indent ring (21) coordinates with annular.
5. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: the cross section of described annular lock groove (18) is approximate triangular in shape.
6. haulback type needle-replaceable safety self-destruction syringe according to claim 1, it is characterized in that: the gap width of described cyclic spring buffer gap (11) is 0.3mm-6.8mm, the degree of depth is 1mm-8.6mm, and the thickness range of the spacing ring body of elastic packing (9) is 0.06mm-8mm.
7. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: described internal coiling sleeve (7) outer wall place is equidistantly evenly distributed with some anti-sidespin convex tendons (23), and the upper end of anti-sidespin convex tendon (23) becomes spininess.
8. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: on described capable of changing needle elastic buffer, between needle stand (4) and lower needle stand (5), be split type assembly structure or single injection-molded structure.
9. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: the cylinder neck inwall place of described cylindrical shell (1) is provided with the spacing draw-in groove of ring packing (24) coordinating with annular resilient seal limiting section (12).
10. haulback type needle-replaceable safety self-destruction syringe according to claim 1, is characterized in that: the external diameter of described O-ring seal (16) is greater than the cylinder neck internal diameter 0.05mm-0.9mm of cylindrical shell (1).
11. haulback type needle-replaceable safety self-destruction syringes according to claim 9, is characterized in that: the cylinder neck inwall punishment on the spacing draw-in groove of described ring packing (24) top is furnished with the anti-sidespin concave bar (25) coordinating with anti-sidespin convex tendon (23).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715223.7U CN203620014U (en) | 2013-10-18 | 2013-11-14 | Pullback needle replaceable safe self-destruction injector |
| PCT/CN2014/001011 WO2015070524A1 (en) | 2013-10-18 | 2014-11-13 | Pulled-back replaceable-needle safe self-destroying syringe |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642710 | 2013-10-18 | ||
| CN201320642709 | 2013-10-18 | ||
| CN201320642709.2 | 2013-10-18 | ||
| CN201320715223.7U CN203620014U (en) | 2013-10-18 | 2013-11-14 | Pullback needle replaceable safe self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620014U true CN203620014U (en) | 2014-06-04 |
Family
ID=55970582
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320714925.3U Expired - Lifetime CN203620013U (en) | 2013-10-18 | 2013-11-14 | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles |
| CN201320715223.7U Expired - Lifetime CN203620014U (en) | 2013-10-18 | 2013-11-14 | Pullback needle replaceable safe self-destruction injector |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320714925.3U Expired - Lifetime CN203620013U (en) | 2013-10-18 | 2013-11-14 | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN203620013U (en) |
| WO (2) | WO2015070522A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| CN105597196A (en) * | 2016-03-22 | 2016-05-25 | 上海康德莱医疗器械股份有限公司 | Safe self-destructing syringe |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548283B (en) * | 2015-01-27 | 2017-05-17 | 徐雪花 | Limit mechanism of needle holder in retraction type safety syringe |
| CN115736971B (en) * | 2022-12-26 | 2023-10-24 | 常州赛乐医疗技术有限公司 | X-ray machine beam line section of thick bamboo fixed knot constructs and handheld dentistry X-ray machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6391008B1 (en) * | 2000-08-15 | 2002-05-21 | Hsi-Chin Tsai | Safety hypodermic syringe |
| EP1514566B1 (en) * | 2003-09-09 | 2008-08-06 | Ping-Te Huang | Syringe including a retaining element with an integral annular rib |
| EP1772163A1 (en) * | 2006-02-20 | 2007-04-11 | HSU, Chih-Kuang | Safety syringe |
| CN201213949Y (en) * | 2008-05-22 | 2009-04-01 | 林作钱 | Novel safe self-locking type self-destruction injector |
| CN201744031U (en) * | 2010-08-06 | 2011-02-16 | 上海康德莱企业发展集团有限公司 | Disposable retractable syringe |
| CN102652849B (en) * | 2011-03-02 | 2013-12-25 | 张淑茗 | Needle base assembly rotating and retracting structure of safety injector |
| CN202198922U (en) * | 2011-08-16 | 2012-04-25 | 弘茗企业有限公司 | Pull-back safe syringe |
| CN103285464B (en) * | 2012-02-29 | 2016-05-11 | 王祖扬 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
| CN202982798U (en) * | 2012-11-08 | 2013-06-12 | 苏州市雅思精密模具有限公司 | Disposable syringe |
| CN203620013U (en) * | 2013-10-18 | 2014-06-04 | 王祖扬 | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles |
-
2013
- 2013-11-14 CN CN201320714925.3U patent/CN203620013U/en not_active Expired - Lifetime
- 2013-11-14 CN CN201320715223.7U patent/CN203620014U/en not_active Expired - Lifetime
-
2014
- 2014-11-13 WO PCT/CN2014/001009 patent/WO2015070522A1/en active Application Filing
- 2014-11-13 WO PCT/CN2014/001011 patent/WO2015070524A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| WO2015070522A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Inner needle base structure for pulled-back replaceable-needle safe self-destroying syringe |
| CN105597196A (en) * | 2016-03-22 | 2016-05-25 | 上海康德莱医疗器械股份有限公司 | Safe self-destructing syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203620013U (en) | 2014-06-04 |
| WO2015070524A1 (en) | 2015-05-21 |
| WO2015070522A1 (en) | 2015-05-21 |
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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: 20220507 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 |