CN202777315U - Replaceable needle inner needle seat structure for safe self-destructing type syringe - Google Patents
Replaceable needle inner needle seat structure for safe self-destructing type syringe Download PDFInfo
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- CN202777315U CN202777315U CN 201220071170 CN201220071170U CN202777315U CN 202777315 U CN202777315 U CN 202777315U CN 201220071170 CN201220071170 CN 201220071170 CN 201220071170 U CN201220071170 U CN 201220071170U CN 202777315 U CN202777315 U CN 202777315U
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- needle
- needle stand
- ring
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- changing
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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- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston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
- A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
- A61M2005/3224—Means to disalign the needle tip and syringe nozzle
-
- 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
- A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
- A61M5/345—Adaptors positioned between needle hub and syringe nozzle
-
- 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 replaceable needle inner needle seat structure for a safe self-destructing type syringe, wherein an inner sleeve type pullback lock assembly is arranged in a needle seat body, a replaceable needle assembling part is formed at an upper part of the needle seat body, an elastic seal limiting part is formed at a lower part of the needle seat body, the replaceable needle assembling part and the elastic seal limiting part form an integrated type single body structure, the surface of the elastic seal limiting part is provided with an annular buffering interval, an annular seal limiting clamping par is formed on an outer wall of an elastic seal limiting part outside the annular buffering interval, an inner wall of a cylindrical body can be clamped by the annular seal limiting clamping part in an elastic buffering manner, a clamping lock part which matches with a core rod pullback member is arranged in an inner cavity of the inner sleeve type pullback lock assembly, the needle seat rotates to one side after being pulled back into the cylindrical body, therefore the injection needle is inclined to one side of the inner wall of the cylindrical body in an approximate 45 degree angle direction and is locked by the neck part of the cylindrical body, consequently the injection needle and the needle seat cannot be pushed out of the neck part of the cylindrical body again, and secondary damage caused by a needle head which is pushed out again can be effectively prevented.
Description
Technical field
This utility model relates to the technical field of medical apparatus and instruments, and is a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, particularly its mechanical connecting structure specifically.
Background technology
Documents one, the patent No.: ZL200710047077.4, the applying date: 2007.10.16, notification number: CN101411908, patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of safe self-destruction type vaccine injector ", comprise cylindrical shell, be provided with core bar in the cylindrical shell, core bar is provided with plug near the place, end, be provided with syringe needle in the cylinder neck of cylindrical shell, the syringe needle place is provided with needle tubing, it is characterized in that: the body of rod sidewall of described core bar end is provided with horizontal cut, vertical breach at horizontal cut and body of rod place, core bar end links, horizontal cut matches with vertical breach, syringe needle is socketed to form by upper needle stand and lower needle stand, lower needle stand inner chamber hollow, lower needle stand becomes tubular structure, lower needle stand is provided with lower needle holder convex tendon with respect to the other end opening part inwall of installing needle holder, the core bar end is provided with the elastomer that is formed with vertical breach UNICOM by horizontal cut, the core bar body of rod herein has certain elasticity, wherein vertically breach is up-narrow and down-wide shape, and horizontal cut outside opening place upper core club shaft outer wall protrudes from lower core club shaft outer wall herein, horizontal cut can be high outside and low outside shape, it is circular-arc that the core bar end becomes, upper needle stand becomes bar shape, upper needle stand outer wall epimere is provided with the reinforcement fin, upper needle stand outer wall hypomere is provided with fixedly bulge loop of needle stand, upper needle stand fixedly the overall diameter of bulge loop greater than upper needle stand outer diameter 0.05mm-0.3mm, described lower needle stand becomes bar shape, its inner chamber hollow, lower needle stand cavity inner wall place is provided with lower needle holder annular fixed groove, lower needle holder annular fixed groove can with upper needle stand fixedly bulge loop match, the internal diameter of lower needle holder annular fixed groove upper chamber is less than the fixing external wall external diameter of the bulge loop upper bar 0.1mm-0.35mm of upper needle stand, the internal diameter of lower needle holder annular fixed groove lower cavity≤upper needle stand is the external wall external diameter of bulge loop lower pole fixedly, lower needle stand is provided with lower needle holder annular convex rib with respect to the place, other end outer wall end of lower needle holder bulge loop, the cylinder neck inwall place of described cylindrical shell is provided with respectively a neck upper limit ring and cylinder neck lower limit ring, distance between cylinder neck upper limit ring and the cylinder neck lower limit ring is 0.3mm-1.5mm, cylinder neck upper limit ring protrudes from inwall 0.1mm-0.6mm between a neck upper limit ring and the cylinder neck lower limit ring, cylinder neck lower limit ring protrudes from inwall 0.02mm-0.25mm between a neck upper limit ring and the cylinder neck lower limit ring, the internal diameter of cylinder lumen between the internal diameter of cylinder neck upper limit ring top cylinder lumen 〉=cylinder neck upper limit ring and the cylinder neck lower limit ring, the internal diameter of the internal diameter of cylinder lumen≤cylinder neck lower limit ring bottom cylinder lumen between cylinder neck upper limit ring and the cylinder neck lower limit ring, the internal diameter of cylinder lumen is less than lower needle holder annular convex rib external diameter 0.1mm-0.5mm between cylinder neck upper limit ring and the cylinder neck lower limit ring, cylinder lumen is provided with the cylindrical shell limit rib with respect to the other end inwall place of cylinder neck, the cylindrical shell limit rib can be linear annular muscle, many the annular muscle that perpendicular muscle consists of,, a perpendicular muscle, the annular muscle that a plurality of raised points consist of, the cylinder inboard wall place of cylindrical shell limit rib bottom is provided with the cylindrical shell inner convex rib, the thickness of the distance between cylindrical shell limit rib and the cylindrical shell inner convex rib 〉=annular stop sheet, the internal diameter at cylindrical shell limit rib place is less than the diameter of annular stop sheet.
The function of utilizing barbed body to realize needle retractable is arranged in the existing safety injector structure, realize safety injection.General barbed body is metalwork or working of plastics.Metalwork need to be processed and cooperate 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 hidden danger of product aspect safety and product quality.Structurally still there is defective in existing plastics barb member or incomplete place is arranged, and therefore causes product in use to have potential safety hazard or security breaches.The design of existing plastics back-off spare though can realize the syringe needle function of pulling back, in use, still is in normal trace after syringe needle is pulled back, and syringe needle might be released again causes user by the risk of secondary damage.
In addition, all there are a same difficult problem in existing single needle seat pumpback formula safety self-destructing syringe or safety injector, are exactly how to solve to engage stable between interior needle stand and the cylindrical shell and reach certain intensity to meet stability requirement; Simultaneously, required pulling force can not use with convenient too greatly when the pumpback needle stand.Although rigid fit structure can reach the stable locking effect of interior needle stand and cylinder inboard wall, be difficult to or even can't reach simultaneously the convenient demand of using.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 quality and precision all are difficult to control in the production process, almost can't realize batch production.
In sum, still need the core bar structure of existing pulling type syringe and the latch-up structure between interior needle stand and the cylindrical shell are further improved, further to improve product safety and stability in use, reach simultaneously the simplification manufacturing procedure, reduce the purpose of manufacturing cost.
Summary of the invention
It is a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe that the purpose of this utility model is to provide.Mutually lock by elastic buffering mechanism between needle stand and the injector cartridge in the syringe capable of changing needle, utilize the distortion of buffer gap to produce expansionary force, realize both lockings and break away from effect, this elastic buffering mechanism can be arranged at interior needle stand place, also can be arranged at the cylinder inboard wall place, simultaneously, interior needle stand and cylindrical shell place all form the elastic buffer snap fastener that can cooperatively interact, its core bar end is provided with the asymmetric locking piece with spring function, this locking piece can lock by engaging mode mutually with the syringe needle inner chamber, and, after needle stand was pulled back to the injector cartridge, under the strength effect of Asymmetric Elasticity structure, needle stand can stressed taking advantage of a situation turn to a lateral deviation, therefore entry needle can swing to cylinder inboard wall one side with nearly 45 angular direction, and locked by the cylindrical shell cervical region, cause thus entry needle and needle stand again to be released the cylindrical shell cervical region, prevent that effectively syringe needle from being released the secondary damage that causes again, realize the safety self-destruct operation of syringe, overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, the first technical scheme of the present utility model is: a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it comprises the needle stand body, it is characterized in that: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component of pulling back, the capable of changing needle department of assembly is formed at described needle stand body top, the elastic packing limiting section is formed at the bottom of needle stand body, capable of changing needle department of assembly and elastic packing limiting section are integral the formula monomer structure, elastic packing limiting section surface offers the ring-type buffer gap, the elastic packing limiting section outer wall in the outside, ring-type buffer gap forms the spacing holding section of annular seal, and elastic packing limiting section outer wall place is provided with anti-sidespin convex tendon.
To achieve these goals, the second technical scheme of the present utility model is: a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it comprises the needle stand body, it is characterized in that: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component of pulling back, the capable of changing needle department of assembly is formed at described needle stand body top, the elastic packing limiting section is formed at the bottom of needle stand body, the capable of changing needle department of assembly becomes split type assembly structure with the elastic packing limiting section, elastic packing limiting section surface offers the ring-type buffer gap, the elastic packing limiting section outer wall in the outside, ring-type buffer gap forms the spacing holding section of annular seal, and elastic packing limiting section outer wall place is provided with anti-sidespin convex tendon.
The utility model discloses a kind ofly for needle stand structure in the capable of changing needle of safety self-destructing syringe, the end of the syringe core rod that is mated is provided with the asymmetric locking piece of pulling back with spring function; Unsymmetric structure cooperates the spring function design to guarantee that this locking piece can insert the needle stand inner chamber smoothly, and utilize the effect of elastic dilatation power, realize that asymmetric holding section, both sides and the inner cased type of the needle stand inner chamber locked component holding section of pulling back engages and locks, the annular groove of locked component card inner chamber also has the elastic buffer characteristic because inner cased type is pulled back, so with the asymmetric locking piece of pulling back when advanced state is touched, both meetings produce the buffering distortion relatively, be convenient to locking piece and snap in the inner cased type locked component inner chamber of pulling back, and when the locking piece pumpback and the inner cased type locked component of pulling back mutually lock, after needle stand is pulled back to the injector cartridge, under the force environment of asymmetric active force, needle stand can form deflection to a side, therefore entry needle can swing to cylinder inboard wall one side with nearly 45 angular direction, and locked by the cylindrical shell cervical region, cause thus entry needle and needle stand again to be released the cylindrical shell cervical region, prevent from effectively that syringe needle from being released again to cause secondary damage, really realize the safety self-destruct operation of syringe.When this utility model implementation, 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, use specific angle and size design, so that the barb body possesses the elastic buffer lock function, in addition, pull back locking piece and core bar of above-mentioned Asymmetric Elasticity is into a single integrated structure, and global facility adopts a die sinking molding, need not separately processing or follow-up assembling, effectively reduce manufacturing cost, simplified assembly technology, reduced assembly process.Product uses simple to operate, stable working state, the pull back snap lock effect of part and needle stand inner chamber of the Asymmetric Elasticity of core bar end is splendid, the product reasonable integral structure, be skillfully constructed, be easy to apply, compare existing product design and technology, have significant technical breakthrough in the design, and have outstanding safety and practicality characteristics.
Description of drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model needle stand body construction sketch map.
Fig. 3 is this utility model inner cased type locked component structural representation of pulling back.
Fig. 4 is this utility model user mode figure.
The specific embodiment
With reference to the accompanying drawings, this utility model further is described.
This utility model is a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it comprises the needle stand body, it is different from prior art and is: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component 7 of pulling back, capable of changing needle department of assembly 1 is formed at described needle stand body top, elastic packing limiting section 2 is formed at the bottom of needle stand body, capable of changing needle department of assembly 1 and elastic packing limiting section 2 are integral the formula monomer structure, elastic packing limiting section 2 surfaces offer ring-type buffer gap 3, elastic packing limiting section 2 outer walls in 3 outsides, ring-type buffer gap form the spacing holding section 4 of annular seal, and elastic packing limiting section 2 outer wall places are provided with anti-sidespin convex tendon 5.The elastic packing limiting section can be realized again the light effect that withdraws from so that can reach the stable requirement that engages between needle stand body and cylindrical shell.
Another technical scheme of this utility model is, a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it comprises the needle stand body, it is different from prior art and is: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component 7 of pulling back, capable of changing needle department of assembly 1 is formed at described needle stand body top, elastic packing limiting section 2 is formed at the bottom of needle stand body, the 2 one-tenth split type assembly structures in capable of changing needle department of assembly 1 and elastic packing limiting section, elastic packing limiting section 2 surfaces offer ring-type buffer gap 3, elastic packing limiting section 2 outer walls in 3 outsides, ring-type buffer gap form the spacing holding section 4 of annular seal, and elastic packing limiting section 2 outer wall places are provided with anti-sidespin convex tendon 5.
In the specific implementation, 1 place, described capable of changing needle department of assembly forms external spiral stricture of vagina department of assembly 6.
In the specific implementation, 1 top, described capable of changing needle department of assembly is circular cone shape, and its tapering is 6:100, and the bottom outer wall of capable of changing needle department of assembly 1 forms external spiral stricture of vagina department of assembly 6.
In the specific implementation, the end of described anti-sidespin convex tendon 5 is semicircle arcuation or taper.
In the specific implementation, excessive place formation circular step 8 or the ring-type between described capable of changing needle department of assembly 1 and the elastic packing limiting section 2 is domatic.
In the specific implementation, described ring-type buffer gap 3 is ring channel structures, its notch to the height of bottom land is 0.05mm-4mm, the width of ring-type buffer gap 3 is 0.05mm-4mm, the distance on 4 surperficial cambered surface arc tops, the spacing holding section of ring-type buffer gap 3 outside cell walls and annular seal is 0.1mm-6mm, distance between cell wall notch place, 3 outside, ring-type buffer gap and the spacing holding section of annular seal 4 outer walls is 0.1mm-6mm, distance between cell wall bottom land place, 3 outside, ring-type buffer gap and the spacing holding section of annular seal 4 outer walls is 0.1mm-6mm, the surface of the spacing holding section 4 of annular seal becomes arc surfaced, the spacing holding section of annular seal 4 arcing surfaces push up to the distance of cambered surface top edge and push up to the distance of cambered surface lower limb less than arc, and the elastic packing limiting section 2 outer wall places of 4 bottoms, the spacing holding section of described annular seal form annular recess 9.
In the specific implementation, the bottom land of described annular recess 9 and ring-type buffer gap 3 is positioned at the same level face or is higher than the bottom land of ring-type buffer gap 3.
In the specific implementation, the elastic packing limiting section 2 outer wall places of described circular step 8 bottoms form annular seal ring assembling groove 10, are socketed with " O " shape O-ring seal 11 in this annular seal ring assembling groove 10.
In the specific implementation, described needle stand body cavity inner wall place forms at least one interior needle stand annular spacing groove 12, be provided with the inner cased type locked component 7 of pulling back in the needle stand body cavity, the inner cased type locked component 7 outer wall places that pull back arrange a position limiting convex ring 13 that matches with interior needle stand annular spacing groove 12 at least.
In the specific implementation, the described inner cased type locked component 7 inner chamber hollows of pulling back, cavity wall forms ring-type snap-in lock bonding part 14 near lower ending opening place in it.
In the specific implementation, annular groove 15 is formed at the top of described ring-type snap-in lock bonding part 14, the thickness of annular groove 15 medial walls 16 is 0.01mm-3mm, annular groove 15 medial walls and annular groove 15 lateral walls 17 form 2 degree to 90 degree angles, and the interior diameter that annular groove 15 medial wall upper ends form is 1mm-80mm.
In the specific implementation, the width of rebate of described annular groove 15 is greater than the bottom land width.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that this utility model implementation 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 (13)
1. needle stand structure in the capable of changing needle that is used for safety self-destructing syringe, it comprises the needle stand body, it is characterized in that: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component (7) of pulling back, capable of changing needle department of assembly (1) is formed at described needle stand body top, elastic packing limiting section (2) is formed at the bottom of needle stand body, capable of changing needle department of assembly (1) and elastic packing limiting section (2) are integral the formula monomer structure, elastic packing limiting section (2) surface offers ring-type buffer gap (3), elastic packing limiting section (2) outer wall in the outside, ring-type buffer gap (3) forms the spacing holding section of annular seal (4), and elastic packing limiting section (2) outer wall place is provided with anti-sidespin convex tendon (5).
2. needle stand structure in the capable of changing needle that is used for safety self-destructing syringe, it comprises the needle stand body, it is characterized in that: described needle stand chamber body hollow, the interior intracavity of this hollow is provided with the inner cased type locked component (7) of pulling back, capable of changing needle department of assembly (1) is formed at described needle stand body top, elastic packing limiting section (2) is formed at the bottom of needle stand body, capable of changing needle department of assembly (1) becomes split type assembly structure with elastic packing limiting section (2), elastic packing limiting section (2) surface offers ring-type buffer gap (3), elastic packing limiting section (2) outer wall in the outside, ring-type buffer gap (3) forms the spacing holding section of annular seal (4), and elastic packing limiting section (2) outer wall place is provided with anti-sidespin convex tendon (5).
3. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: described capable of changing needle department of assembly (1) locates to form external spiral stricture of vagina department of assembly (6).
4. according to claim 3 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: top, described capable of changing needle department of assembly (1) is circular cone shape, its tapering is 6:100, and the bottom outer wall of capable of changing needle department of assembly (1) forms external spiral stricture of vagina department of assembly (6).
5. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: the end of described anti-sidespin convex tendon (5) is semicircle arcuation or taper.
6. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: excessive place formation circular step (8) or ring-type between described capable of changing needle department of assembly (1) and the elastic packing limiting section (2) are domatic.
7. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: described ring-type buffer gap (3) is ring channel structures, its notch to the height of bottom land is 0.05mm-4mm, the width of ring-type buffer gap (3) is 0.05mm-4mm, the distance on ring-type buffer gap (3) outside cell wall and the spacing holding section of annular seal (4) surperficial cambered surface arc top is for being 0.1mm-6mm, distance between cell wall notch place, the outside, ring-type buffer gap (3) and the spacing holding section of annular seal (4) outer wall is for being 0.1mm-6mm, distance between cell wall bottom land place, the outside, ring-type buffer gap (3) and the spacing holding section of annular seal (4) outer wall is for being 0.1mm-6mm, the surface of the spacing holding section of annular seal (4) becomes arc surfaced, the spacing holding section of annular seal (4) arcing surface pushes up to the distance of cambered surface top edge and pushes up to the distance of cambered surface lower limb less than arc, and elastic packing limiting section (2) the outer wall place of bottom, the spacing holding section of described annular seal (4) forms annular recess (9).
8. according to claim 7 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: the bottom land of described annular recess (9) and ring-type buffer gap (3) is positioned at the same level face or is higher than the bottom land of ring-type buffer gap (3).
9. according to claim 6 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: elastic packing limiting section (2) the outer wall place of described circular step (8) bottom forms annular seal ring assembling groove (10), is socketed with " O " shape O-ring seal (11) in this annular seal ring assembling groove (10).
10. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: described needle stand body cavity inner wall place forms at least one interior needle stand annular spacing groove (12), be provided with the inner cased type locked component (7) of pulling back in the needle stand body cavity, inner cased type locked component (7) the outer wall place that pulls back arranges a position limiting convex ring (13) that matches with interior needle stand annular spacing groove (12) at least.
11. according to claim 1 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: described inner cased type locked component (7) the inner chamber hollow of pulling back, cavity wall forms ring-type snap-in lock bonding part (14) near lower ending opening place in it.
12. according to claim 11 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: annular groove (15) is formed at the top of described ring-type snap-in lock bonding part (14), the thickness of annular groove (15) medial wall (16) is 0.01mm-3mm, annular groove (15) medial wall and annular groove (15) lateral wall (17) form 2 degree to 90 degree angles, and the interior diameter that annular groove (15) medial wall upper end forms is 1mm-80mm.
13. according to claim 12 a kind of for needle stand structure in the capable of changing needle of safety self-destructing syringe, it is characterized in that: the width of rebate of described annular groove (15) is greater than the bottom land width.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220071170 CN202777315U (en) | 2012-02-29 | 2012-02-29 | Replaceable needle inner needle seat structure for safe self-destructing type syringe |
| PCT/CN2012/000931 WO2013127039A1 (en) | 2012-02-29 | 2012-07-05 | Replaceable-needle inner needle base structure for use in safe self-destructing syringe |
| PCT/CN2013/000191 WO2013127260A1 (en) | 2012-02-29 | 2013-02-26 | Replaceable-needle inner needle base structure for use in safe self-destructing syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220071170 CN202777315U (en) | 2012-02-29 | 2012-02-29 | Replaceable needle inner needle seat structure for safe self-destructing type syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202777315U true CN202777315U (en) | 2013-03-13 |
Family
ID=47804672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220071170 Expired - Lifetime CN202777315U (en) | 2012-02-29 | 2012-02-29 | Replaceable needle inner needle seat structure for safe self-destructing type syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202777315U (en) |
| WO (2) | WO2013127039A1 (en) |
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| US5968020A (en) * | 1993-03-12 | 1999-10-19 | Saito; Yoshikuni | Syringe assembly |
| AUPN254195A0 (en) * | 1995-04-20 | 1995-05-18 | Curie, Napoleon | Syringe with retractable needle mount |
| CN1188184C (en) * | 2000-03-27 | 2005-02-09 | 张赖玉好 | Safe syringe |
| CN2710663Y (en) * | 2004-06-30 | 2005-07-20 | 张金荣 | Improved structure of needle fastening seat for safety syringe tube |
| CN1586652A (en) * | 2004-07-06 | 2005-03-02 | 邹纯平 | Self-destroying safety injector |
| CN2750815Y (en) * | 2004-12-29 | 2006-01-11 | 吴建中 | Disposable safety self-destruction syringe |
| CN100531816C (en) * | 2005-12-19 | 2009-08-26 | 陈昌慈 | Safety injector |
| CN101411908B (en) * | 2007-10-16 | 2011-03-09 | 上海顶尖堂生化科技有限公司 | Safe self-destruction type vaccine injector |
| CN201735028U (en) * | 2010-06-17 | 2011-02-09 | 昆山和兴医疗科技有限公司 | Safe self-destruction injection syringe with locking structure |
| CN101862490B (en) * | 2010-06-21 | 2012-07-11 | 温岭市千禧光医疗器械有限公司 | Self-destruction insulin syringe capable of replacing needle |
| CN202105269U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Inner needle base structure for safe self-destruction syringe |
-
2012
- 2012-02-29 CN CN 201220071170 patent/CN202777315U/en not_active Expired - Lifetime
- 2012-07-05 WO PCT/CN2012/000931 patent/WO2013127039A1/en active Application Filing
-
2013
- 2013-02-26 WO PCT/CN2013/000191 patent/WO2013127260A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013127039A1 (en) | 2013-09-06 |
| WO2013127260A1 (en) | 2013-09-06 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |