CN2803412Y - Safety self-destroying and disposable syringe - Google Patents
Safety self-destroying and disposable syringe Download PDFInfo
- Publication number
- CN2803412Y CN2803412Y CN 200520068573 CN200520068573U CN2803412Y CN 2803412 Y CN2803412 Y CN 2803412Y CN 200520068573 CN200520068573 CN 200520068573 CN 200520068573 U CN200520068573 U CN 200520068573U CN 2803412 Y CN2803412 Y CN 2803412Y
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- China
- Prior art keywords
- syringe
- seat
- flange
- supporting seat
- awl
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- Expired - Fee Related
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Abstract
The utility model discloses a safety self-destroying and disposable syringe which comprises a hollow needle cylinder, a push rod arranged in the needle cylinder and a rubber plug arranged at the front end of the push rod, wherein the front end of the needle cylinder is provided with a needle seat which comprises a conical seat and a supporting seat, wherein the outer side of the conical seat is provided with an upper flange which is fit with a front flange of the needle cylinder, a middle flange is matched with an inner cavity of the needle cylinder, a platform is arranged between the upper flange and the middle flange, and a plurality of O-shaped rubber rings are arranged between an outer circle of a body of the conical seat and the needle cylinder; the supporting seat is arranged in an inner cavity of the conical seat, the front end of an inner hole of the supporting seat is provided with an elastic supporting claw, the lower part of the outer side of the supporting seat is provided with a plurality of elastic position clamping blocks, the needle cylinder at the position corresponding to the position clamping blocks is provided with spacing grooves; the front end of the push rod is provided with a conical bulge, and the middle part of the conical bulge is provided with a pull hook. The utility model is a self-destroying safety syringe of which a needle head is retracted in the needle cylinder after the needle head is used for injection, and injection needles with various standards can be interchanged. The utility model has the characteristics of simple structure, convenient machining and use and high safety.
Description
Technical field
This utility model relates to a kind of syringe, relates in particular to the disposable syringe of a kind of safety self-destructing (hereinafter to be referred as " safety injector ").
Background technology
Facts have proved of modern medicine, for avoiding to the input of the mankind or animal or cross infection takes place when taking out medium, hypodermic syringe must disposable use, is using later promptly as garbage disposal.Using at present maximum disposable syringes is one by the cavity syringe, syringe needle and the journey piston of deciding that is fitted in the syringe are formed, the existing greatest problem of this syringe is after injection finishes, its syringe needle still is trapped in the outside, sharp-pointed degree with respect to syringe needle, it not only is the carrying of syringe rubbish, destroying makes troubles, often take place because of the thing of stabbing the medical and nursing work personnel accidentally simultaneously, this the secondary cross infection of pathogenic bacteria just inevitably can occur, particularly be used to suffer from serious infectious disease (as acquired immune deficiency syndrome (AIDS) for those, hepatitis, SARS etc.) syringe of patient's use, the medical hidden danger that can not ignore especially.Practice shows, the damage that the needle stick injuries that dangerous needle set causes obviously causes more than other accidents.
In recent years, along with it is found that disposable syringe do not had good people reclaim use repeatedly after, in having proposed self-destruction syringe at the end of last century, self-destruction syringe can destroy voluntarily after it uses or be locked and can not reuse.But these syringes all have an important disadvantages, and that specification that is exactly needle stand and syringe is one to one, can not satisfy different patients' needs by replacing needle stand, thereby make injection manipulation complicate, and make troubles for medical worker's use.
The utility model content
The purpose of this utility model be to provide a kind of inject use in the syringe needle of back be reduced in the syringe, the self-destroy safety injector of interchangeable various standard injection pins, this syringe simple in structure, processing and easy to use, safe.
For achieving the above object, this utility model has adopted following technical scheme:
A kind of safety injector comprises that a hollow barrel, is installed in the plug that the interior push rod and of described syringe is installed in described push rod front end, and the front end of described syringe is equipped with a needle stand, it is characterized in that: needle stand comprises awl seat and supporting seat; The awl seat outside sets up the front flange of a upper flange and syringe to coincide, and flange matches with the syringe inner chamber, sets up a platform between upper flange and the flange; Awl seat top is Rule circular cone, and a plurality of " O " type cushion rubber is installed between awl seat body cylindrical and the syringe; Awl seat bottom, medial wall is provided with a protruding circle; Supporting seat is built up in the awl seat inner chamber, and its endoporus front end is set up an elasticity support claw; The supporting seat outer lower portion is set up a plurality of elasticity screens pieces, with the syringe of screens piece corresponding section on be provided with stopper slot, its size and screens piece match; The supporting seat outer front end is provided with a front flange, and its diameter matches with awl seat endoporus; The supporting seat bottom is provided with a lower flange, the elasticity screens piece engagement that can be connected with the soft band of body; Described push rod front end has a tapered projection, and a pull hook is set up at the middle part of tapered projection; The push rod middle part is provided with three easy-to-draw breakpoints.
The tapering of above-mentioned Rule circular cone is 6: 100;
Above-mentioned supporting seat elasticity screens piece can open and shrink; When opening and syringe screens groove engagement, will bore seat and fixedly secure on syringe, break away from engagement with syringe screens groove during contraction, make an awl disengaging syringe;
Above-mentioned hollow needle Pipe Flange is a right angle step, and is superimposed with flange with the engagement of awl seat upper flange, and the cross sectional shape of engaging piece is square, trapezoidal, circular, ellipse and polygon;
The cross sectional shape of the above-mentioned supporting seat elasticity screens piece and the engaging piece of screens groove is square, trapezoidal, circular, ellipse and polygon;
The outside, above-mentioned supporting seat elasticity screens piece two ends becomes polygon or circular the protrusion;
Protruding circle on the above-mentioned awl seat inwall can only move between the front flange of supporting seat and flange, can with the front flange engagement of supporting seat;
Three easy breakpoints at above-mentioned push rod middle part are not in same plane;
Above-mentioned push rod front end is provided with a plurality of damaged portions;
The rear end of above-mentioned push rod is provided with safe catch, and safe catch contacts with the rear wall of described syringe, and the junction of itself and push rod is provided with the easy breakpoint in many places.
A kind of safety injector that provides according to this utility model is compared with the existing market product has following advantage: at first, on supporting seat, set up symmetric elasticity screens piece, guarantee that under the effect of the elasticity activity screens piece of the stopper slot of syringe and supporting seat the awl seat can not pull out and bounce back, add retaining platform again in the hollow barrel inboard, in being subjected to, needle stand can not go out during pressure yet, because of awl seat top is that polygon boss and syringe coincide, so about can not rotate yet, Rule conehead on the awl seat can cooperate with the standard injection pin of all size.Set up an O type O-ring seal between syringe and awl seat, guaranteeing not can leakage, and when injection finished the withdrawing push rod, the awl seat just was dragged in the syringe easily, can't reuse, and has really reached safety self-destruct; Secondly, only need very little trying hard to recommend in the elasticity support claw that the bar front end protrusion just can enter the awl seat, reduced the misery that has caused to patient when injecting; Once more, the safe catch of putting back-end can stop syringe before not using during with drawing liquid faulty operation make syringe shift to an earlier date self-destruction.In a word, this utility model be a kind of inject use the back syringe needle can in be reduced in the syringe, the self-destroy safety injector of interchangeable various standard injection pins, this syringe simple in structure, processing and easy to use, safe.
Description of drawings
Fig. 1, planar structure sketch map of the present utility model;
Fig. 2, engaging piece enlarged drawing of the present utility model;
Fig. 3, the easy breakpoint enlarged drawing of push rod of the present utility model;
Fig. 4, the novel safe catch enlarged drawing of this use;
Fig. 5, the novel awl seat sketch map of this use;
Fig. 6, supporting seat sketch map of the present utility model;
Fig. 7, this utility model drawing liquid sketch map that finishes;
Fig. 8, this utility model injection finishing sketch map;
Sketch map contracts in Fig. 9, this utility model syringe needle;
The partial enlarged drawing of Figure 10, this utility model Fig. 9;
Sketch map after Figure 11, this utility model push rod fracture.
The specific embodiment
The disposable syringe of a kind of safety self-destructing as shown in Figure 1 comprises syringe 1, is installed in piston 3 in the syringe 1, can promotes the push rod 2 of piston 3 axially-movables, and the front end of described syringe 1 is equipped with a needle stand 4.
Shown in Fig. 2,3,4 and 5, needle stand 4 comprises awl seat 41 and supporting seat 42.Wherein awl seat 41 is provided with Rule circular cone 411, and its tapering is 6: 100, can cooperate with the standard injection pin of all size.The awl seat 41 outer upper flanges 412 of surveying are polygon and 12 engagements of hollow barrel 1 inner portion flange, the cross sectional shape of engaging piece can be square, trapezoidal, circular, ellipse and polygon, adopt squarely in the present embodiment, awl seat 41 can not rotate when making the entry needle of transposing different size; The awl seat 41 outer flange 413 of surveying cooperate with hollow barrel 1 inner portion; Between 41 liang of flanges of awl seat (promptly 412,413), there are a right angle platform 4121 and hollow barrel 1 to be superimposed, are used for to go out when protection awl seat 41 is pushed by injection.Awl seat bottom, 41 medial wall is provided with a protruding circle 414; Between awl seat 41 body cylindricals and the syringe 1 " O " type cushion rubber 5 is installed.
Supporting seat 42 is built up in awl seat 41 inner chambers, be made by elastomeric material, its endoporus front end is set up an elasticity support claw 421, outer front end is provided with a ring-like front flange 422, the green diameter of front flange 422 matches with awl seat 41 endoporus, and greater than boring protruding circle 414 diameters that seat bottom, 41 medial wall is provided with.Supporting seat 41 outer lower portion symmetries are set up two elasticity screens pieces 423, with the syringe 1 of screens piece 423 corresponding sections on be provided with stopper slot 11; The engaging piece cross sectional shape of elasticity screens piece 423 and screens groove 11 can be square, trapezoidal, circular, ellipse and polygon, and present embodiment adopts circle, and its circular groove with the stopper slot 11 of syringe 1 closely matches.Supporting seat elasticity screens piece 423 can open and shrink; When opening and the engagement of the screens groove 11 of syringe 1, will bore 41 and firmly be fixed on the syringe 1; During contraction and syringe screens groove 11 break away from engagement, make awl seat 41 break away from syringes.During installation, supporting seat 42 upwards promotes, and its outside front flange 422 is subjected to boring the extruding of the protruding circle 414 of an endoporus and interior compression deformation just restores to the original state by protruding circle 414 up to whole front flange 422.Simultaneously, in the process that supporting seat 42 upwards promotes, the lower flange 424 of supporting seat 42 is with the elasticity screens piece 423 outside expandings of this external survey, supporting seat 42 is stuck in the stopper slot 11 of syringe 1, thereby seat 41 is stuck in syringe 1 and supporting seat 42 is middle boring, and whole needle stand 4 is fixed on syringe up and down be not shifted.
There is a tapered projection 21 on push rod 2 tops, and a pull hook 211 is set up at its middle part, and when injection finished, pull hook just was positioned at elasticity support claw 421 places of supporting seat 42 endoporus front ends.The leading portion of push rod 2 is provided with the push rod front end and is provided with a plurality of damaged and three easy breakpoint A, B, C as shown in Figure 3, they in same plane dislocation arrange, both kept the rigidity of push rod, be convenient to die sinking again, easily can rupture once drawing.The tail end of push rod 2 is provided with safe catch 22 as shown in Figure 4, can prevent syringe self-destruction in advance under packing, transportation and other unused state, shields.In addition, E, F, 3 easily broken places of G are set on described safe catch 22, when the nurse uses, have separated once breaking off with the fingers and thumb gently.
Shown in Fig. 5,6,7,8,9,10 and 11, drawing liquid finishes, and removes safe catch 22.In injection process, after push rod 2 pushed away certain distance, the tapered projection 21 of push rod 2 front ends is squeezed the elasticity support claw 421 of opening supporting seat 42 and is entered awl seat 41 inner chambers, finish up to injection, at this moment, pull hook 211 just is positioned at elasticity support claw 421 places of supporting seat 42 endoporus front ends, contracts in the elasticity support claw 421 and recovers to catch pull hook 211.Subsequently, push rod 2 is drop-down, supporting seat 42 moves downward under the effect of pull hook 211, when the spacing top dead centre 4221 of supporting seat 42 front flanges 422 is run into the lower dead center 4141 of the protruding circle 414 of awl seat 41 endoporus, the lower flange 424 of supporting seat 42 and elasticity screens piece 423 be connected soft with 4232 driven rotary under and separate, screens piece 423 just retracts to middle room, has broken away from the screens groove 11 on the syringe 1, and this moment awl seat 41 only depends on the frictional resistance of 1 of " O " type cushion rubber 5 and syringe to support.When continuing to pull down, drive awl seat 41 by supporting seat 42 and be pulled in the syringe 1, reached the purpose of safety self-destruct along with push rod 2.
In a word, this utility model be a kind of inject use the back syringe needle can in be reduced in the syringe, the self-destroy safety injector of interchangeable various standard injection pins, this syringe simple in structure, processing and easy to use, safe.
The foregoing description is only for the usefulness that this utility model is described; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation of the spirit and scope that do not break away from utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (6)
1, the disposable syringe of a kind of safety self-destructing, comprise that a hollow barrel, is installed in the plug that the interior push rod and of described syringe is installed in described push rod front end, the front end of described syringe is equipped with a needle stand, it is characterized in that: needle stand comprises awl seat and supporting seat; The awl seat outside sets up the front flange of a upper flange and syringe to coincide, and flange matches with the syringe inner chamber, sets up a platform between upper flange and the flange; Awl seat top is Rule circular cone, and a plurality of " O " type cushion rubber is installed between awl seat body cylindrical and the syringe; Awl seat bottom, medial wall is provided with a protruding circle; Supporting seat is built up in the awl seat inner chamber, and its endoporus front end is set up an elasticity support claw; The supporting seat outer lower portion is set up a plurality of elasticity screens pieces, with the syringe of screens piece corresponding section on be provided with stopper slot, its size and screens piece match; The supporting seat outer front end is provided with a front flange, and its diameter matches with awl seat endoporus; The supporting seat bottom is provided with a lower flange, the elasticity screens piece engagement that can be connected with the soft band of body; Described push rod front end has a tapered projection, and a pull hook is set up at the middle part of tapered projection; The push rod middle part is provided with three easy-to-draw breakpoints.
2, the disposable syringe of a kind of safety self-destructing as claimed in claim 1 is characterized in that: described supporting seat elasticity screens piece can open and shrink; When opening and syringe screens groove engagement, will bore seat and fixedly secure on syringe, break away from engagement with syringe screens groove during contraction, make an awl disengaging syringe.
3, the disposable syringe of a kind of safety self-destructing as claimed in claim 1, it is characterized in that: the hollow needle Pipe Flange is a right angle step, with the engagement of awl seat upper flange, superimposed with flange, the cross sectional shape of engaging piece is square, trapezoidal, circular, ellipse or polygon.
4, the disposable syringe of a kind of safety self-destructing as claimed in claim 1 is characterized in that: the cross sectional shape of the engaging piece of described supporting seat elasticity screens piece and screens groove is square, trapezoidal, circular, ellipse or polygon.
5, the disposable syringe of a kind of safety self-destructing as claimed in claim 1 is characterized in that: the protruding circle on the described awl seat inwall, can only between the front flange of supporting seat and flange, move, can with the front flange engagement of supporting seat.
6, the disposable syringe of a kind of safety self-destructing as claimed in claim 1 is characterized in that: three easy breakpoints at described push rod middle part are not in same plane.
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/720,327 US7637890B2 (en) | 2005-01-25 | 2005-01-25 | Safety self-destroying disposable syringe |
| CN 200520068573 CN2803412Y (en) | 2005-01-25 | 2005-01-25 | Safety self-destroying and disposable syringe |
| JP2007551530A JP4801095B2 (en) | 2005-01-25 | 2005-03-28 | Safety self-destroying disposable syringe |
| BRPI0519953A BRPI0519953A8 (en) | 2005-01-25 | 2005-03-28 | SELF-DESTRUCTIVE SAFETY SYRINGE AVAILABLE |
| AT05737917T ATE488261T1 (en) | 2005-01-25 | 2005-03-28 | SELF-DESTRUCTIVE DISPOSABLE SYRINGE |
| EP05737917A EP1842570B1 (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe |
| PT05737917T PT1842570E (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe |
| DE602005024869T DE602005024869D1 (en) | 2005-01-25 | 2005-03-28 | SELF-DESTROYING INJECTION SYRINGE |
| PL05737917T PL1842570T3 (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe |
| PCT/CN2005/000392 WO2006079257A1 (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe |
| MX2007009051A MX2007009051A (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe. |
| AU2005326343A AU2005326343C1 (en) | 2005-01-25 | 2005-03-28 | A self destruction disposable syringe |
| CA2595893A CA2595893C (en) | 2005-01-25 | 2005-03-28 | A safety self-destroying disposable syringe |
| EGNA2007000773 EG26919A (en) | 2005-01-25 | 2007-07-25 | A safety self destruction disposable syringe |
| ZA2007/07087A ZA200707087B (en) | 2005-01-25 | 2007-08-22 | A self destruction disposable syringe |
| MA30167A MA29271B1 (en) | 2005-01-25 | 2007-08-27 | DISPOSABLE SYRINGE WITH AUTODESTRUCTION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068573 CN2803412Y (en) | 2005-01-25 | 2005-01-25 | Safety self-destroying and disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2803412Y true CN2803412Y (en) | 2006-08-09 |
Family
ID=36908714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520068573 Expired - Fee Related CN2803412Y (en) | 2005-01-25 | 2005-01-25 | Safety self-destroying and disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2803412Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098464A1 (en) * | 2007-02-12 | 2008-08-21 | Zuoqian Lin | Self-destroying insulin syringe |
| CN101411905B (en) * | 2007-10-16 | 2012-05-30 | 上海顶尖堂生化科技有限公司 | Needle head for safety syringe |
| CN103128054A (en) * | 2011-11-30 | 2013-06-05 | 上海康德莱企业发展集团股份有限公司 | Visual inspection machine used for supporting seat of injector |
| CN103372251A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Needle seat pull-back type safe self-locking self-destruction syringe |
| CN103372250A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Back-pulling type safety self-locking self-destroying syringe |
| CN103566442A (en) * | 2013-10-22 | 2014-02-12 | 杭州龙德医用器械有限公司 | Low-resistance pull-back type self-destroying syringe |
| CN111658898A (en) * | 2020-07-22 | 2020-09-15 | 徐立 | Self-destruction safety syringe |
-
2005
- 2005-01-25 CN CN 200520068573 patent/CN2803412Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098464A1 (en) * | 2007-02-12 | 2008-08-21 | Zuoqian Lin | Self-destroying insulin syringe |
| CN101411905B (en) * | 2007-10-16 | 2012-05-30 | 上海顶尖堂生化科技有限公司 | Needle head for safety syringe |
| CN103128054A (en) * | 2011-11-30 | 2013-06-05 | 上海康德莱企业发展集团股份有限公司 | Visual inspection machine used for supporting seat of injector |
| CN103128054B (en) * | 2011-11-30 | 2016-06-15 | 上海康德莱企业发展集团股份有限公司 | The vision testing machine of a kind of support seat for syringe |
| WO2013159254A1 (en) * | 2012-04-27 | 2013-10-31 | Zhang Linfeng | Needle base retractable-type safe self-locking-type self-destructing syringe |
| WO2013159255A1 (en) * | 2012-04-27 | 2013-10-31 | Zhang Linfeng | Retractable-type safe self-locking-type self-destructing syringe |
| CN103372250A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Back-pulling type safety self-locking self-destroying syringe |
| CN103372250B (en) * | 2012-04-27 | 2015-06-17 | 温州市贝普科技有限公司 | Back-pulling type safety self-locking self-destroying syringe |
| EP2851101A4 (en) * | 2012-04-27 | 2016-04-06 | Linfeng Zhang | Needle base retractable-type safe self-locking-type self-destructing syringe |
| CN103372251A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Needle seat pull-back type safe self-locking self-destruction syringe |
| CN103566442A (en) * | 2013-10-22 | 2014-02-12 | 杭州龙德医用器械有限公司 | Low-resistance pull-back type self-destroying syringe |
| CN103566442B (en) * | 2013-10-22 | 2015-11-18 | 杭州龙德医用器械有限公司 | A kind of low-resistance haulback type self-destroyed syringe |
| CN111658898A (en) * | 2020-07-22 | 2020-09-15 | 徐立 | Self-destruction safety syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060809 Termination date: 20100225 |