CN2703541Y - Self-destruction syringe - Google Patents
Self-destruction syringe Download PDFInfo
- Publication number
- CN2703541Y CN2703541Y CN 200420041068 CN200420041068U CN2703541Y CN 2703541 Y CN2703541 Y CN 2703541Y CN 200420041068 CN200420041068 CN 200420041068 CN 200420041068 U CN200420041068 U CN 200420041068U CN 2703541 Y CN2703541 Y CN 2703541Y
- Authority
- CN
- China
- Prior art keywords
- locking piece
- self
- core bar
- piston
- overcoat
- 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 8
- 239000007924 injection Substances 0.000 abstract description 8
- 210000002105 tongue Anatomy 0.000 abstract 1
- 206010011409 Cross infection Diseases 0.000 description 3
- 206010029803 Nosocomial infection Diseases 0.000 description 3
- 241001149930 Protura <class> Species 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 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
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Abstract
The utility model relates to a self-destruction syringe, comprising an injection needle, an outer sleeve, a piston, and a core rod. The injection needle is positioned at the front end of the outer sleeve; the piston is connected to the front end of core rod; a long slot provided with V-shaped elastic locking piece is positioned at the core rod along the axle; two elastic tongues of the V-shaped elastic locking piece are respectively stuck to the inner wall of outer sleeve and the bottom surface of long slot which is provided with a ratchet long the axle; a limiting step of the locking piece is positioned on the inner wall of the rear end of outer sleeve; the locking piece of the utility model can only be moved forward, not backward by the core rod. The utility model has the advantages of simple structure, convenient and steady operation, dependable non-return and good safety performance, and self-destruction after disposable use.
Description
Technical field
This utility model 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.
Summary of the invention
Technical problem to be solved in the utility model 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 in the invention for solving the above technical problem 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 locking piece in the elongated slot, two elastic tongue pieces on the elasticity locking piece stab outer casing inner wall and core bar elongated slot bottom surface respectively.
This utility model core bar elongated slot bottom surface is provided with ratchet vertically.Overcoat rear end inwall circumference is provided with the locking piece limited step.
Be provided with " V " type locking piece that is installed on the core bar elongated slot in this utility model overcoat, locking piece is provided with the elastic tongue piece that stabs outer casing inner wall and core bar, and it can only move to preceding in overcoat under the drive of core bar, can not retreat.After injection (or getting blood etc.) work is finished, piston is shifted the top onto, core bar drives locking piece and moves to the overcoat front end, elastic tongue piece stabs outer casing inner wall, 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.This utility model simple structure, easy to use, stable, security performance is good.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the local A structure for amplifying sketch map of Fig. 1;
Fig. 3 is that the B-B of Fig. 1 is to structural representation;
Fig. 4 is the structural representation of the another kind of embodiment of this utility model.
1. coneheads among the figure, 2. overcoat, 3. piston, 4. core bar, 5. elongated slot, 6. locking piece, 7. ratchet, 8. limited step.
The specific embodiment
From Fig. 1, Fig. 4 as can be seen, a kind of self-destruction syringe of this utility model, 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 also is provided with helmet outward.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 this utility model is basic identical, is not giving unnecessary details.
Characteristics of the present utility model are: core bar 4 upper edges are axially arranged with an elongated slot 5, " V " type elasticity locking piece 6 is installed in the elongated slot 5, " V " type elasticity locking piece 6 is provided with two elastic tongue pieces up and down, has good elasticity, be supported in elongated slot 5 and the overcoat 2 by elastic dilatation, stab the bottom surface of elongated slot 5 on overcoat 2 inwalls and the core bar 4 respectively, prick on corresponding contact surface.As Fig. 2, shown in Figure 3.
This utility model overcoat 2 rear end inwall circumference are provided with locking piece limited step 8.Last elastic tongue piece on the locking piece 6 is stabbed diagonally all the time on outer casing inner wall, can not retreat.Pull back core bar 4, locking piece 6 is not moved under the effect of limited step 8.Promote core bar 4 forward, the following elastic tongue piece diagonal stabbing on the locking piece 6 is in the bottom surface of elongated slot 5, and locking piece 6 can only move to preceding in overcoat under the drive of core bar, can not retreat.
Fig. 4 is the structural representation of the another kind of embodiment of this utility model.It can also be seen that from Fig. 4 elongated slot 5 bottom surfaces of core bar 4 are provided with ratchet 7 vertically.Ratchet 7 is the folded tooth of successive frustum type, it can form successive the cooperation with the following elastic tongue piece on the locking piece 6, because the last elastic tongue piece on the locking piece 6 is stabbed diagonally all the time on outer casing inner wall, can not retreat, promoting core bar like this moves forward, can drive locking piece 6 reaches, until moving to the overcoat front end, lock piston 3.
After this utility model used injection (or getting blood etc.) work to finish, core bar 4 drove locking piece 6 and moves to the overcoat front end, and the last elastic tongue piece diagonal stabbing of locking piece can not retreat on outer casing inner wall.Core bar, piston etc. can not move forward, and can not pull back, otherwise core bar will be broken.Realize only self-destruction of syringe with this, avoid syringe to reuse for once using.This utility model simple structure, 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, be provided with " V " type elasticity locking piece in the elongated slot, two elastic tongue pieces on the elasticity locking piece stab outer casing inner wall and core bar elongated slot bottom surface respectively.
2. self-destruction syringe according to claim 1 is characterized in that: overcoat rear end inwall circumference is provided with the locking piece limited step.
3. self-destruction syringe according to claim 1 is characterized in that: core bar elongated slot bottom surface is provided with ratchet vertically.
4, self-destruction syringe according to claim 3 is characterized in that: ratchet is the folded tooth of successive frustum type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041068 CN2703541Y (en) | 2004-06-01 | 2004-06-01 | Self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041068 CN2703541Y (en) | 2004-06-01 | 2004-06-01 | Self-destruction syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703541Y true CN2703541Y (en) | 2005-06-08 |
Family
ID=34774540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420041068 Expired - Fee Related CN2703541Y (en) | 2004-06-01 | 2004-06-01 | Self-destruction syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703541Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427157C (en) * | 2005-09-28 | 2008-10-22 | 山东威高集团医用高分子制品股份有限公司 | Self-destructive syringe |
| CN103405834A (en) * | 2013-08-10 | 2013-11-27 | 江苏康友医用器械有限公司 | Self-destructive disposable syringe |
-
2004
- 2004-06-01 CN CN 200420041068 patent/CN2703541Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427157C (en) * | 2005-09-28 | 2008-10-22 | 山东威高集团医用高分子制品股份有限公司 | Self-destructive syringe |
| CN103405834A (en) * | 2013-08-10 | 2013-11-27 | 江苏康友医用器械有限公司 | Self-destructive disposable 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: 20050608 |