CN2068398U - Primary injector - Google Patents
Primary injector Download PDFInfo
- Publication number
- CN2068398U CN2068398U CN 90206011 CN90206011U CN2068398U CN 2068398 U CN2068398 U CN 2068398U CN 90206011 CN90206011 CN 90206011 CN 90206011 U CN90206011 U CN 90206011U CN 2068398 U CN2068398 U CN 2068398U
- Authority
- CN
- China
- Prior art keywords
- skin plug
- push
- pull head
- pull
- plug
- 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.)
- Pending
Links
Abstract
The utility model relates to a disposable syringe, belonging to medical equipment, which comprises a pull rod, a barrel body, a needle head, a needle head seat, a needle head sleeve and a leather stopper. A push-and-pull head is fixed to the inner of the taper cavity of the front leather stopper; a self-tightening claw on the end of the front leather stopper sticks to the wall of the taper cavity of the back leather stopper; the push-and-pull head is tightened and fixed on the top end of the pull rod, forming an integral leather stopper. When pumping liquor, the leather stopper bodily moves; the front and the back leather stoppers are disengaged from contacting after injection; then the pull rod is pulled and moves, and the push-and-pull head can be completely pulled out form the taper cavity and the self-tightening claw of the front leather stopper, being not used again. The aim of verily disposable use can be achieved; the probability of iatrogenic cross infection is stopped; the rights and interests of patients are ensured. The utility model can be widely used for each medical units and hospitals.
Description
This utility model relates to a kind of medical apparatus and instruments, disposable syringe.
For preventing cross infection, ensure the healthy of people, the disposable syringe of various structures arises at the historic moment.For adapting to disposable needs, a lot of disposable syringes adopt easy structure, select plastic material for use or control disposable use by the control injection.The patent No. 88208744.4 " Dispoable medical glass syringe " does not structurally also have new breakthrough, can not reach real disposable purpose, thereby does not just stop other reusable probability.Number of patent application 89104976.2 " syringe for one-shot injection ", though French in the real disposable use of Chinese patents energy, its technology difficulty is big, cost is high.
The purpose of this utility model be to provide a kind of really can only expendable disposable syringe, stopped the probability of medical cross infection fully, ensured patient's rights and interests and safety.
This utility model is achieved in that disposable syringe is made up of cylindrical shell, pull bar, syringe needle, needle holder, pinhead sleeve and the whole skin plug that is made of forward and backward skin plug, push-and-pull head that is fixed on the pull bar.After drawing liquid, the injection, forward and backward skin plug separates, and preceding Pi Saisai can not be returned to original rigging position again on the top of cylindrical shell, really can only expendable purpose thereby reach.
Fig. 1, structural representation of the present utility model:
Cylindrical shell (1), pull bar (2), back skin plug (3), push-and-pull head (4), preceding skin plug (5), needle holder (6), syringe needle (7), pinhead sleeve (8).
Fig. 2, preceding skin plug be the part enlarged drawing in addition.
Fig. 3, back skin plug be the part enlarged drawing in addition.
Fig. 4, push-and-pull head be the part enlarged drawing in addition.
Fig. 5, injection process sketch map.
With reference to Fig. 2,3, forward and backward skin plug (5), (3) select for use the silicone rubber of two different elastic modelling quantity to make, and just produce different resistances because of different coefficient of frictions is arranged.Forward and backward two lips on forward and backward skin plug (5), (3) outer surface are identical geometry, the cross section is a triangle, have the guide angle effect and be beneficial to guiding, the contact area of lip and cylindrical shell (1) lacks 20% to reach guiding conveniently than the skin plug contact area of original structure, work is light and handy, and folding is purpose flexibly.
Preceding skin plug (5) inside is the little outer big conical cavity in lining, and the top is a guide angle, and end has four self-tightening pawls.
Back skin plug (3) inside is the conical cavity that cooperates with the self-tightening pawl of preceding skin plug (5).
In the middle of the push-and-pull head (4) is taper hole, the taper seat of outer surface for matching with preceding skin plug (5) inner conical cavity, in the junction of two taper surfaces one anchor ring is arranged, quartering breach is arranged on the anchor ring, so that the tight pawl of four selfs on the preceding skin plug (5) passes, simultaneously this anchor ring can be used as forward and backward skin plug (5), (3) radially, axially, the locating surface of automatic aligning.
With reference to Fig. 1, preceding skin plug (5) is fixed on outside the push-and-pull head (4), the terminal self-tightening pawl of preceding skin plug (5) is attached on skin plug (3) the conical cavity wall of back, again the intermediary taper hole of push-and-pull head (4) tightly is enclosed within on the vertical tapered rod of pull bar (2), remainder is same as the prior art, does not describe in detail.
With reference to Fig. 5, when drawing liquid, the rear cone that is assemblied in the push-and-pull head (4) on the pull bar (2) is attaching the self-tightening pawl of preceding skin plug (5), makes forward and backward skin plug (5), (3) connect to an overall work effectively, shown in Fig. 5 A.
When injection, pull bar (2) by push-and-pull head (4) forward skin plug (5) add active force, the preceding proal while of skin plug (5), before self-tightening pawl on the skin plug (5) begin disengaging because of active force and the different gap that produces of damping amount promptly and between skin plug (3) inner cone chamber, back, slowly back skin plug (3) is ineffective, at this moment have only the self-tightening pawl of preceding skin plug (5) to be attached on the push-and-pull head (4), have moulding stress shown in Fig. 5 B.
After injection finishes, because skin plug (5) rested on original position reliably before the vacuum withdrawing power of cylindrical shell (1) made, at this moment pull out pull bar (2) again, at this moment the stressed effect of pull bar (2) is successfully pulled out push-and-pull head (4) in the past in the conical cavity of skin plug (5) and the self-tightening pawl, be in released state, the self-tightening pawl of this moment has been soft state, and no matter how pull bar (2) rotates also can not overlap in the preceding skin plug (5), promptly reach the purpose of a shot, shown in Fig. 5 C.
This disposable syringe structurally has breakthrough, and can not reuse, and really having reached can only expendable purpose, has stopped the probability of medical cross infection fully, has ensured patient's rights and interests, has increased patient's the security.Can be widely used in each medical institutions, be specially adapted to medical condition poor vast rural area and outlying mountain area, provide the medical apparatus and instruments of safety again easy to use to them.
Claims (3)
1, a kind of medical apparatus and instruments disposable syringe, form by cylindrical shell (1), pull bar (2), needle holder (6), syringe needle (7), pinhead sleeve (8) and skin plug, skin plug (5) is fixed on the push-and-pull head (4) before it is characterized in that, the end of preceding skin plug (5) is connected with back skin plug (3), and push-and-pull head (4) is fixed on pull bar (2) and goes up integrant skin plug.
2, syringe according to claim 1, before it is characterized in that, back skin plug (5), (3) on the outer surface before, two lips in back are identical geometry, the cross section is a triangle, preceding skin plug (5) inside is the little outer big conical cavity in lining, the top is a guide angle, end has four self-tightening pawls, back skin plug (3) inside is conical cavity, before, back skin plug (5), (3) select for use the silicone rubber of two different elastic modelling quantity to make, in the middle of the push-and-pull head (4) is taper hole, outer surface is a taper seat, and there is an anchor ring at the two tapers hand-deliver place of connecing, and quartering breach is arranged on the anchor ring.
3, syringe according to claim 1 and 2, skin plug (5) inner conical cavity is fixed on the push-and-pull head (4) before it is characterized in that, the terminal self-tightening pawl of preceding skin plug (5) is attached on skin plug (3) the conical cavity wall of back, and the intermediary taper hole of push-and-pull head (4) tightly is enclosed within integrant skin plug on the vertical tapered rod of pull bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90206011 CN2068398U (en) | 1990-05-05 | 1990-05-05 | Primary injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90206011 CN2068398U (en) | 1990-05-05 | 1990-05-05 | Primary injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068398U true CN2068398U (en) | 1991-01-02 |
Family
ID=4886671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90206011 Pending CN2068398U (en) | 1990-05-05 | 1990-05-05 | Primary injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002078773A1 (en) * | 2000-11-06 | 2002-10-10 | Xiping Wang | Self-locking syringe |
-
1990
- 1990-05-05 CN CN 90206011 patent/CN2068398U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002078773A1 (en) * | 2000-11-06 | 2002-10-10 | Xiping Wang | Self-locking syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |