CN100427157C - Self-destructive syringe - Google Patents
Self-destructive syringe Download PDFInfo
- Publication number
- CN100427157C CN100427157C CNB200510104206XA CN200510104206A CN100427157C CN 100427157 C CN100427157 C CN 100427157C CN B200510104206X A CNB200510104206X A CN B200510104206XA CN 200510104206 A CN200510104206 A CN 200510104206A CN 100427157 C CN100427157 C CN 100427157C
- Authority
- CN
- China
- Prior art keywords
- core bar
- elongated slot
- self
- retaining fastener
- tongue piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 206010011409 Cross infection Diseases 0.000 abstract description 4
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 4
- 241001149930 Protura <class> Species 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
- A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
- A61M2005/5033—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston by use of an intermediate blocking member positioned between the syringe barrel and the piston rod to prevent retraction of the latter, e.g. toothed clip placed on the piston rod
Abstract
A self-destroying injection for preventing cross infection is composed of an injecting needle, a jacket, a piston and a core rod. It features that a V-shaped elastic backstop is arranged in an axial long slot on said core rod. As a result, said core rod can only move forward, not backward.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically a kind of self-destruction syringe.
Background technology
We know that syringe is a kind of medical apparatus commonly used.It generally comprises syringe needle, overcoat, piston, push rod etc.In order to prevent cross infection, disposable use more and more is subject to people's attention.But present widely used disposable syringe belongs to managerial notion, is not " disposable " on the serviceability, can repeated multiple times use, and leaves hidden danger to cross infection, and propagation tends to produce the disease of.In addition, injection finishes in processing procedure subsequently, because outside syringe needle was exposed to mostly, very easily thorn scratched hospitalized patients, causes new cross infection.Patent 00205827.8 discloses a kind of self-destroy safety injector, by syringe, needle holder, sealing ring, rubber piston and push rod are formed, the syringe front end has cylindrical hole, needle holder is to slide and packs in the syringe cylindrical hole, realize airtight by sealing ring, the needle holder rear end is the puncture cone of band handle, be easy to wear out the rubber piston thin film region at the injection terminal point, agree with the collet of push rod front end in the piston, needle holder is drawn in the syringe together with injection needle, can realize disposable use self-destruction like this, but complex structure, the assembling difficulty, strict to part dimension, serviceability is also stable inadequately.The Chinese patent application ZL2004200410686 that the applicant once proposed, it is axially arranged with an elongated slot in the core bar upper edge, is provided with " V " type elasticity locking piece in the elongated slot, and two elastic tongue pieces of elasticity locking piece stab outer casing inner wall and core bar elongated slot bottom surface respectively.But the elasticity locking piece is provided with reasonable inadequately, and use is overturn easily, and is unstable, unreliable.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, and a kind of simple structure is provided, and is easy to use, stable, retaining dependable performance, the self-destruction syringe that security performance is good.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of self-destruction syringe, it comprises entry needle, overcoat, piston, core bar, entry needle is installed in the overcoat front end, piston is connected the core bar front end, it is characterized in that: the core bar upper edge is axially arranged with an elongated slot, be provided with " V " type elasticity retaining fastener in the elongated slot, the outer elastic tongue piece of " V " type elasticity retaining fastener is provided with to two spines that turn up, and thrusting outer casing inner wall backward, the interior elastic tongue piece of elasticity retaining fastener thrusts core bar elongated slot bottom surface backward.
The degree of depth of core bar elongated slot of the present invention is greater than the core bar radius.Turn up in the outer elastic tongue piece both sides of described " V " type elasticity retaining fastener, the centre is concave surface.Elasticity retaining fastener in the elongated slot is stable, reliable like this, can not overturn, be out of shape.
The anterior elongated slot bottom surface relatively of the interior elastic tongue piece of elasticity retaining fastener of the present invention is provided with the positive pitch of 2-5 degree, and relative elongated slot bottom surface, rear portion is provided with the downward inclination angle of 6-16 degree, and itself and core bar elongated slot bottom surface form former and later two contacts site.
Be provided with stable " V " type retaining fastener that is installed on the core bar elongated slot in the overcoat of the present invention, be provided with the elastic tongue piece that stabs outer casing inner wall and core bar on the retaining fastener reliably, when core bar is mobile backward, its relative overcoat is not subjected to displacement, when promoting core bar forward, it is along with moving to preceding in overcoat, and can only move to preceding in overcoat under core bar drives, and can not retreat.After injection work is finished, piston is shifted inner end onto, core bar drives the retaining fastener and moves to the overcoat front end, elastic tongue piece stabs outer casing inner wall and core bar elongated slot bottom surface, core bar, piston etc. can not move forward, can not pull back, realize only self-destruction of syringe, avoid syringe to reuse for once using with this.Simple structure of the present invention, easy to use, stable, security performance is good.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of retaining fastener of the present invention;
Fig. 3 is the planar development sketch map of retaining fastener of the present invention;
Fig. 4 is that the A of Fig. 2 is to sketch map.
1. coneheads among the figure, 2. overcoat, 3. piston, 4. core bar, 5. elongated slot, 6. retaining fastener, the outer elastic tongue piece of 6-1., elastic tongue piece in the 6-2. spine, 6-3..
The specific embodiment
As can be seen from Figure 1, a kind of self-destruction syringe of the present invention, it includes overcoat 2, piston 3, core bar 4.Overcoat 2 front ends are provided with the conehead 1 of one, are used for installing entry needle, and entry needle is outer can also to be provided with helmet.Piston 3 is connected core bar 4 front ends, and piston 3 is better elastic bodies, and its front end shape is consistent with overcoat 2 and conehead 1 cavity shape, can reduce the residual liquid amount of injection so effectively.The above-mentioned The Nomenclature Composition and Structure of Complexes prior art of the present invention is basic identical, is not giving unnecessary details.
Characteristics of the present invention are: core bar 4 upper edges are axially arranged with an elongated slot 5, and " V " type elasticity retaining fastener 6 is installed in the elongated slot 5, and two elastic tongue pieces on " V " type elasticity retaining fastener 6 have good elasticity, are supported in elongated slot 5 and the overcoat 2 by elastic dilatation.The outer elastic tongue piece 6-1 of " V " type elasticity retaining fastener 6 is provided with to two spine 6-2 that turn up, and thrusts outer casing inner wall backward, and the interior elastic tongue piece 6-3 of elasticity retaining fastener thrusts core bar elongated slot 5 bottom surfaces backward, and thorn is on corresponding contact surface.As shown in Figure 1 and Figure 2.
The degree of depth of core bar elongated slot 5 of the present invention is greater than the core bar radius.Elasticity retaining fastener 6 is arranged in deep groove, and good stability can not overturn, be out of shape.
Turn up in the outer elastic tongue piece 6-1 both sides of " V " of the present invention type elasticity retaining fastener 6, the centre is concave surface, and the rear end is provided with to two spine 6-2 that turn up, and spine 6-2 thrusts outer casing inner wall backward.As Fig. 2, Fig. 3, shown in Figure 4.Like this, be positioned at both sides, two spine 6-2 that turn up can thrust outer casing inner wall reliably, and use can not overturn, is out of shape.
The anterior elongated slot bottom surface relatively of the interior elastic tongue piece 6-3 of elasticity retaining fastener 6 of the present invention is provided with the positive pitch a of 2-5 degree, relative elongated slot bottom surface, rear portion is provided with the downward inclination angle b of 6-16 degree, itself and core bar elongated slot bottom surface form former and later two contacts site, like this, elastic tongue piece 6-3 thrusts core bar elongated slot bottom surface more reliably in can making, and its power of thrusting core bar elongated slot bottom surface is enough big, to such an extent as in the time of can overcoming reach, the sliding friction power of the relative overcoat 2 of outer elastic tongue piece 6-1, when guaranteeing to promote core bar forward, elasticity retaining fastener 6 is along with moving to preceding in overcoat.
Be provided with stable " V " type retaining fastener 6 that is installed on core bar elongated slot 5 in the overcoat 2 of the present invention, the outer elastic tongue piece 6-1 on the retaining fastener 6 stabs diagonally all the time backward on outer casing inner wall, and interior elastic tongue piece 6-3 diagonal stabbing can not retreat in the bottom surface of elongated slot 5.When core bar was mobile backward, its relative overcoat was not subjected to displacement, and when promoting core bar forward, it is along with moving to preceding in overcoat, and can only move to preceding in overcoat under core bar drives, and can not retreat.After injection work was finished, piston was shifted inner end onto, and core bar drives the retaining fastener and moves to the overcoat front end, elastic tongue piece stabs outer casing inner wall and core bar elongated slot bottom surface, core bar, piston etc. can not move forward, can not pull back, otherwise core bar will be broken or overcoat by drawing crack.Realize only self-destruction of syringe with this, avoid syringe to reuse for once using.
Simple structure of the present invention, easy to use, stable, security performance is good.
Claims (4)
1. self-destruction syringe, it comprises entry needle, overcoat, piston, core bar, entry needle is installed in the overcoat front end, piston is connected the core bar front end, it is characterized in that: the core bar upper edge is axially arranged with an elongated slot, is provided with " V " type elasticity retaining fastener in the elongated slot, and the outer elastic tongue piece of " V " type elasticity retaining fastener is provided with to two spines that turn up, and thrusting outer casing inner wall backward, the interior elastic tongue piece of elasticity retaining fastener thrusts core bar elongated slot bottom surface backward.
2. self-destruction syringe according to claim 1 is characterized in that: the degree of depth of described core bar elongated slot is greater than the core bar radius.
3. self-destruction syringe according to claim 1 is characterized in that: turn up in the outer elastic tongue piece both sides of described " V " type elasticity retaining fastener, the centre is concave surface.
4, self-destruction syringe according to claim 3, it is characterized in that: the anterior elongated slot bottom surface relatively of the interior elastic tongue piece of described elasticity retaining fastener is provided with the positive pitch of 2-5 degree, relative elongated slot bottom surface, rear portion is provided with the downward inclination angle of 6-16 degree, and itself and core bar elongated slot bottom surface form former and later two contacts site.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510104206XA CN100427157C (en) | 2005-09-28 | 2005-09-28 | Self-destructive syringe |
| PCT/CN2006/001102 WO2007036100A1 (en) | 2005-09-28 | 2006-05-26 | Self-damaging syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510104206XA CN100427157C (en) | 2005-09-28 | 2005-09-28 | Self-destructive syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1939548A CN1939548A (en) | 2007-04-04 |
| CN100427157C true CN100427157C (en) | 2008-10-22 |
Family
ID=37899358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510104206XA Expired - Fee Related CN100427157C (en) | 2005-09-28 | 2005-09-28 | Self-destructive syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100427157C (en) |
| WO (1) | WO2007036100A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544701B (en) * | 2020-06-12 | 2021-04-09 | 山东中保康医疗器具有限公司 | Self-destruction pre-charging type tube-flushing injector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906231A (en) * | 1988-10-14 | 1990-03-06 | Young J Winslow | Single-use fillable syringe |
| CN2683155Y (en) * | 2003-12-08 | 2005-03-09 | 周桂芝 | Disposable syringe |
| CN2698368Y (en) * | 2004-05-08 | 2005-05-11 | 林作钱 | Disposable self destructing syringe |
| CN2701454Y (en) * | 2004-03-30 | 2005-05-25 | 温永圣 | Safety self-destructing syringe |
| CN2703541Y (en) * | 2004-06-01 | 2005-06-08 | 山东威高集团医用高分子制品股份有限公司 | Self-destruction syringe |
| CN1654094A (en) * | 2004-02-10 | 2005-08-17 | 王希平 | Safety syringe |
| CN2832187Y (en) * | 2005-09-28 | 2006-11-01 | 山东威高集团医用高分子制品股份有限公司 | Self-destructing injection syringe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378057Y (en) * | 1999-01-06 | 2000-05-17 | 韩建明 | Pressure-keeping syringe |
| CN2577866Y (en) * | 2002-11-15 | 2003-10-08 | 陆永会 | Self-destructed safety syringes |
-
2005
- 2005-09-28 CN CNB200510104206XA patent/CN100427157C/en not_active Expired - Fee Related
-
2006
- 2006-05-26 WO PCT/CN2006/001102 patent/WO2007036100A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906231A (en) * | 1988-10-14 | 1990-03-06 | Young J Winslow | Single-use fillable syringe |
| CN2683155Y (en) * | 2003-12-08 | 2005-03-09 | 周桂芝 | Disposable syringe |
| CN1654094A (en) * | 2004-02-10 | 2005-08-17 | 王希平 | Safety syringe |
| CN2701454Y (en) * | 2004-03-30 | 2005-05-25 | 温永圣 | Safety self-destructing syringe |
| CN2698368Y (en) * | 2004-05-08 | 2005-05-11 | 林作钱 | Disposable self destructing syringe |
| CN2703541Y (en) * | 2004-06-01 | 2005-06-08 | 山东威高集团医用高分子制品股份有限公司 | Self-destruction syringe |
| CN2832187Y (en) * | 2005-09-28 | 2006-11-01 | 山东威高集团医用高分子制品股份有限公司 | Self-destructing injection syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007036100A1 (en) | 2007-04-05 |
| CN1939548A (en) | 2007-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104338215B (en) | Disposable use safe self-destruction insulin needle | |
| CN101274114B (en) | Automatic retraction safety syringe | |
| CN1977988A (en) | Disposable safety syringe | |
| US8105276B2 (en) | Disposable safety injection apparatus | |
| CN100427157C (en) | Self-destructive syringe | |
| CN104902946A (en) | Prefillable auto-retractable safety syringe | |
| CN201161029Y (en) | Automatically shrinking safety syringe | |
| CN2832187Y (en) | Self-destructing injection syringe | |
| CN101229406A (en) | Safety injector core bar lockup device | |
| CN201453773U (en) | Injector special for blood plasma | |
| CN2703541Y (en) | Self-destruction syringe | |
| CN202376562U (en) | Cylinder structure used for safe self-destruction type syringe | |
| CN2518520Y (en) | Once-used safety syringe | |
| CN2659471Y (en) | Self-destorying safety syringe | |
| CN2768806Y (en) | Card type self-destroying injector | |
| CN201161032Y (en) | Core-rod locking device of safety syringe | |
| CN209237055U (en) | Disposable syringe | |
| CN200951241Y (en) | Double blocking type bottle aqueous powder injector | |
| CN217447866U (en) | Needle inserting device | |
| CN216406437U (en) | Cabinet lock | |
| CN2776433Y (en) | Degradation type autodestroyed injector | |
| CN215690627U (en) | Improved self-destruction syringe structure | |
| CN2701454Y (en) | Safety self-destructing syringe | |
| CN215585084U (en) | Needle seat rotation limiting structure | |
| CN2582629Y (en) | Self-destroying disposable syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20180928 |