CN2536246Y - Disposable self-destructing injectors - Google Patents
Disposable self-destructing injectors Download PDFInfo
- Publication number
- CN2536246Y CN2536246Y CN 02228523 CN02228523U CN2536246Y CN 2536246 Y CN2536246 Y CN 2536246Y CN 02228523 CN02228523 CN 02228523 CN 02228523 U CN02228523 U CN 02228523U CN 2536246 Y CN2536246 Y CN 2536246Y
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- CN
- China
- Prior art keywords
- push
- piston
- pull bar
- utility
- model
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- 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
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a self-destroying disposable injector. Based on the prior disposable injector, a piston 2 and a push-and-pull rod 5 are designed into one structure which can be dissociated and is assembled into integration. The utility model is locked up or released through an elastic locating pin 3 arranged on the outer surface of a cylinder which is on the opposite side of the piston. A W-shaped non-reversible directional groove is arranged on the inner surface of a cylinder which is on the front end of the push-and-pull rod, and the directional groove is engaged with the locating pin to use and formed by a plurality of crease lines end-to-end, and each of the crease lines is from deep to shallow. Compared with the prior disposable injector, the utility model has the advantages that the disposable injector can self-destroy, and the disposable application is achieved really; the fraudulent reclaim is avoided through self-destroying under the condition that the forced recovery and destroy can't be supervised effectively; if fraudulently reclaimed, the disposable injector can't be used as medical appliance; the harm to patients resulted by repeatedly using the disposable injector can be prevented; the utility model has good social benefits.
Description
Technical field:
This utility model relates to a kind of medical apparatus and instruments, especially a kind of self-destruction type disposable syringe.
Background technology:
At present, what each medical institutions used all is the reusable disposable syringe of same class and since this syringe with after damage, can also continue to use, and the unit that is equipped with the equipment that unmakes is very little, this has created chance just for illegal the recovery.By interests are driven, in a part of medical institutions of vast rural area and small and medium-sized cities, repeated use remains existing despite repeated prohibition, and the potential hazard that causes to the patient is as many as counterfeit drug.Therefore, this reused " disposable " syringe is not a kind of " disposable syringe " truly.
Summary of the invention:
The purpose of this utility model provides a kind ofly to be improved on original disposable syringe basis, just damage voluntarily after making it reach disposable use, can not reuse, thus really avoid duplicate injection to bring the self-destruction type disposable syringe of harm such as cross infection.
Technical solution adopted in the utility model is: on the basis of original disposable syringe, piston 2 and push-pull bar 5 are designed to structure separable, that be assembled into one, it locks by the elastic positioning pin 3 of design on the cylinder outer wall of the piston back side or breaks away from, on the inwall of push-pull bar 5 front end cylinders, have every, many broken line from beginning to end irreversible guide slots 4 of being " W " shape of forming shallow that are used with alignment pin by being deep to.
This utility model is compared with traditional disposable syringe, has following advantage:
1. use once back auto-destruct, really realized disposable use;
2. forcing to reclaim, destroy oneself's destruction under the situation about can't effectively supervise, avoided illegal recovery;
3. can not be re-used as medical apparatus and instruments after illegal the recovery uses;
4. can avoid causing potential harm to the patient because of reusing;
5. good social benefit is arranged;
6. can promote the innovation of medical apparatus and instruments.
Description of drawings:
Fig. 1 is this utility model structural profile sketch map.
Fig. 2 is piston and alignment pin end view.
Fig. 3 is piston and alignment pin generalized section.
Fig. 4 launches sketch map for alignment pin.
Fig. 5 is the push-pull bar end view.
Fig. 6 is push-pull bar and irreversible guide slot generalized section.
The specific embodiment:
Piston push-pull rod in traditional disposable syringe is an overall structure, though the mouth of destruction is arranged, force just can destroy, otherwise still can repeatedly use.This utility model is designed to separable two-segment type push-pull bar structure with whole push-pull bar, bound fraction is exactly technical pattern main points of the present utility model, and its exclusive irreversible guide slot, locating pin structure design make this syringe in use, can only finish once complete working procedure, after the program of finishing the work, can not draw push-pull bar again, draw again, push-pull bar will come off automatically, piston will be stayed in the syringe cylinder, thereby can't reuse, and reaches with back self-destruction purpose.
This utility model has increased a pair of locking on existing piston, the elastic positioning pin 3 that breaks away from the push-pull bar effect, it is designed on the outer wall of piston back side cylinder, piston 2 cylinders are divided into two parts, for not wide, peripherally ported barrel, a pair of symmetric anchor point is arranged on the barrel of narrower part part, the height of the degree of depth of anchor points and alignment pin is just in time in guide slot deep trouth position and guide slot bottom after inserting guide slot 4, when pulling push-pull bar 5, alignment pin 3 because of the elastic force effect to the position bending of the tube heart, fall into the deep of next bar guide slot, and can not separate with push-pull bar because of guide slot length.Push-pull bar 5 has increased the irreversible guide slot 4 that a pair of and piston alignment pin are 3 that be used, be " W " shape on the original basis, push-pull bar head barrel bore is slightly larger than the piston cylinder external diameter, be made in former push-pull bar and destroy the place of mouthful front near piston 2, it is a complete cylindrical shape, inwall is made a kind of five broken line grooves from beginning to end symmetrically, every broken line groove all is that a dark tail is shallow, the afterbody of preceding article line promptly is the head of back bar line, when alignment pin is mobile in groove, can can not return by every broken line successively, so be irreversible guide slot.
Piston 2 has just constituted whole push-pull bar after being inserted into the push-pull bar 5 that is provided with irreversible guide slot 4 when plant produced, push-pull bar is pushed syringe cylinder 6 after, syringe just remains on dormant state.After finishing the working procedure of regulation, draw push-pull bar 5 again when syringe uses, the alignment pin 3 on the piston 2 will come off the disengaging chute from push-pull bar, and piston will be stayed in the injection tube 6.
The compressing elastic positioning pin inserts in the interior groove of push-pull bar, and it is to install after the self-destruction in order to prevent that the push-pull bar end face is not established installing port again.Like this, the push-pull bar port does not have installing port with regard to having only disengaging, after the program of the finishing the work self-destruction, push-pull bar can't oppress the elastic positioning pin stayed on the syringe inner carrier, inject break away from chute useless, do not have under the situation of end face installing port again, this syringe can't reuse.
Work process of the present utility model is:
Shift the syringe the inside onto with being assembled into whole push-pull bar, like this, syringe just is in dormant state.Label 1 is a syringe needle, and at this moment, elastic positioning pin is positioned at guide slot head deep trouth position, can be considered alignment pin and has entered in the first working procedure groove, and before reality was used, alignment pin was at article one trough portion (the first working procedure groove).
Take out medicine.Pulling out push-pull bar when taking out medicine, Yin Lali effect and alignment pin can be shifted to afterbody by guide slot article one trough portion is fallen in the back trough portion deep trouth (the second working procedure groove) by afterbody shallow slot position.Can't return in the more shallow article one groove of afterbody, finish the irreversible working procedure of the first step.
When pushing push-pull bar, alignment pin can be shifted to afterbody by second trough portion, advances (the 3rd working procedure groove) in the 3rd the trough portion deep trouth by afterbody shallow slot clan during medicament mixed.Finished irreversible working procedure of second step.
When extracting hybrid medicine out, alignment pin is shifted to afterbody by the 3rd trough portion, falls into the 4th trough portion (the 4th working procedure groove), finishes irreversible working procedure of the 3rd step.
When giving the patient infusion medicine, step is the same, and just alignment pin is shifted to afterbody by the 4th trough portion and fallen into the 5th groove and promptly break away from the chute head, when finishing irreversible working procedure of the 4th step, has also finished last irrversible process, enters the self-destruction state.At this moment, no matter you draw push-pull bar, and this syringe all can not re-use, and have reached the purpose of once using the back self-destruction.
Claims (1)
1, a kind of self-destruction type disposable syringe, by syringe, piston, push-pull bar is formed, it is characterized in that: piston (2) is designed to structure separable, that be assembled into one with push-pull bar (5), it locks by the elastic positioning pin (3) of design on the cylinder outer wall of the piston back side or breaks away from, on the inwall of push-pull bar (5) front end cylinder, have every, many broken line from beginning to end irreversible guide slots (4) of being " W " shape of forming shallow that are used with alignment pin by being deep to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228523 CN2536246Y (en) | 2002-02-26 | 2002-02-26 | Disposable self-destructing injectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228523 CN2536246Y (en) | 2002-02-26 | 2002-02-26 | Disposable self-destructing injectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536246Y true CN2536246Y (en) | 2003-02-19 |
Family
ID=33705067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228523 Expired - Fee Related CN2536246Y (en) | 2002-02-26 | 2002-02-26 | Disposable self-destructing injectors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536246Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7331935B2 (en) | 2004-12-21 | 2008-02-19 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism |
| US7399293B2 (en) | 2003-07-30 | 2008-07-15 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism with tamper resistance features |
| US7537582B2 (en) | 2003-07-30 | 2009-05-26 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism |
-
2002
- 2002-02-26 CN CN 02228523 patent/CN2536246Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7399293B2 (en) | 2003-07-30 | 2008-07-15 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism with tamper resistance features |
| US7537582B2 (en) | 2003-07-30 | 2009-05-26 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism |
| US7331935B2 (en) | 2004-12-21 | 2008-02-19 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |