CN201510603U - Low-residue self-destruction injector - Google Patents
Low-residue self-destruction injector Download PDFInfo
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- CN201510603U CN201510603U CN2009203092781U CN200920309278U CN201510603U CN 201510603 U CN201510603 U CN 201510603U CN 2009203092781 U CN2009203092781 U CN 2009203092781U CN 200920309278 U CN200920309278 U CN 200920309278U CN 201510603 U CN201510603 U CN 201510603U
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- piston seat
- low
- needle tubing
- piston
- destruction
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Abstract
The utility model provides a low-residue self-destruction injector which belongs to the technical field of medical appliance and solves the problems of incomplete self-destruction, excessive liquid medicine residue, unstable and complicated structure and high production cost. The low-residue self-destruction injector comprises a needle tube and a core rod arranged in the needle tube. A piston seat located in the needle tube is arranged at the front end of the core rod; a piston body is sleeved on the piston seat; a positioning structure which can axially position the piston seat when the piston seat moves to the front end of the needle tube and the piston body props against the front end face of the needle tube is arranged between the piston seat and the needle tube; and a connecting structure which can be snapped when the piston seat is axially positioned and the core rods retreats is adopted between the piston seat and the core rod. The low-residue self-destruction injector has the advantage of convenient use, complete self-destruction, safe, low liquid medicine residue, low production cost, and the like.
Description
Technical field
This utility model belongs to technical field of medical instruments, relates to a kind of syringe, particularly a kind of low-residual self-destruction syringe.
Background technology
Along with the progress of society, people are more and more higher to the requirement of medical treatment, and also in constantly innovation and improvement, especially the improvement aspect syringe is greatly improved medical apparatus and instruments.At present, plastic injector for temporary use is used widely.General disposable syringe is just discarded after using once, thereby can prevent syringe from reusing and cause viral communication, safer health.But general disposable syringe is because Structure Designing Problem, must be artificially with its breaking-up, and can not reach self-destruction.So just bring the trouble of using, used and illegal chance of making a profit also for the irregular medical institutions of minority by secondary, also once added other people probability of viral communication simultaneously, threatened people's life and health.
People have designed various safety injectors for this reason, and for example, Chinese patent literature once disclosed a kind of syringe [Chinese patent application numbers 95240586.5; Publication number CN2236328Y], this utility model relates to a kind of disposable syringe, is movably installed with lining on the anterior outer wall of its piston push rod.Dried syringe length such as the length of lining and required operating distance poor has draw-in groove on the back end of syringe inwall.Correspondingly be provided with the elastic projection that matches with the back end of syringe draw-in groove, on the outer wall position of the corresponding lining rear end of piston push rod, be provided with the protruding thorn of elasticity at village cover rear end outer wall.This utility model can guarantee that disposable syringe can only operate once.Obviously, such scheme has solved existing disposable syringe to a certain extent can't realize problems such as self-destruction, but the syringe of this class formation can't guarantee piston and is completely fixed and cause the syringe self-destruction thorough inadequately, it is more that this series products of while exists residual quantity, cause waste, structure more complicated, production cost be higher, use a series of problem such as inconvenience.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of lower resistance, disposable use, the residual low-residual self-destruction syringe low and simple in structure of medicinal liquid.
The purpose of this utility model can realize by following technical proposal: a kind of low-residual self-destruction syringe, the core bar that comprises needle tubing and be arranged on needle tubing inside, the front end of core bar is provided with the piston seat that is positioned at needle tubing, on piston seat, be with piston body, it is characterized in that, being provided with between described piston seat and the needle tubing when piston seat moves to needle tubing front end and piston body and is resisted against the needle tubing front end face can be with the location structure of piston seat axial location, adopts the syndeton that can be broken when piston seat axial location and core bar retreat between described piston seat and the core bar.
Location structure by axial location is fixed on the front end face of needle tubing with piston seat, realizes that piston seat can't endwisely slip in needle tubing once more.Because piston seat has slided into the front end face of needle tubing, like this, the injection in the needle tubing is also injected smoothly and is finished, and the medicinal liquid residual quantity is less, avoids waste.Simultaneously, syndeton is broken under the effect of pulling force when core bar retreats easily, realizes the disengaging between piston seat and the core bar, thereby realized that whole syringe can't reuse, guaranteed that syringe can only disposablely use, ensured health care, avoided because of the repeated use cross infection.
In above-mentioned a kind of low-residual self-destruction syringe, described location structure comprises locating groove that is arranged on needle interior wall and the location hook that is arranged on the piston seat, and described location hook recedes and can be embedded in the above-mentioned locating groove.The location hook of being located at piston seat is embedded in to be located in the needle interior wall locating groove, because location hook recedes, has realized that piston seat fixedly positioning.
As another kind of scheme, in above-mentioned a kind of low-residual self-destruction syringe, described location structure is arranged on the locating groove on the piston seat and is arranged on needle interior wall and can be embedded in the interior location barb of above-mentioned locating groove.
In above-mentioned a kind of low-residual self-destruction syringe, described syndeton comprises the some thin bars that radially are provided with, and above-mentioned thin bar is at the circumferencial direction uniform distribution, and carefully an end and the piston seat of bar are connected, and the other end and core bar are connected.When piston seat is fixed by location structure, when core bar retreated, under the effect of pulling force, the thin bar that is connected between piston seat and the core bar was broken easily, has so just realized the disengaging between core bar and the piston seat, and syringe is then destroyed.
In above-mentioned a kind of low-residual self-destruction syringe, have cannelure on the described piston seat, above-mentioned piston body is placed in the above-mentioned cannelure.Cannelure has guaranteed that piston body does not come off when sliding.
In above-mentioned a kind of low-residual self-destruction syringe, the outside of described piston body has some arc bulge loops that distribute successively vertically, and above-mentioned arc bulge loop contacts with the needle interior wall line.The line contact often can reduce the resistance in the sliding process, so piston resistance in the process of sliding is little, the convenient use; And, effectively guaranteed sealing owing to be provided with a plurality of arc bulge loops.
In above-mentioned a kind of low-residual self-destruction syringe, described core bar front end has Connection Block, and described piston seat rear end has the joint pin that inserts in the Connection Block, and the two ends of above-mentioned thin bar are connected on Connection Block and the joint pin.
Compared with prior art, this low-residual self-destruction syringe has the following advantages: 1, owing to be provided with firm axial positioning structure between piston seat of the present utility model and the needle tubing, so piston seat is more firm when being positioned, and can't slide once more.2, be provided with the syndeton of easily breaking between piston seat and the core bar and realized syringe self-destruction completely.3, between piston body and the needle tubing owing to be that line contact, therefore in the process of using, reduced resistance, convenient use; And, effectively guaranteed sealing owing to be provided with a plurality of arc bulge loops.
Description of drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1.
Fig. 3 is a structural representation after this utility model self-destruction.
Among the figure, 1, needle tubing; 11, locating groove; 2, core bar; 21, Connection Block; 3, piston seat; 31, location hook; 32, cannelure; 33, joint pin; 4, piston body; 41, arc bulge loop; 5, location structure; 6, syndeton; 61, thin bar.
The specific embodiment
Embodiment one
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but this utility model be not limited to these embodiment.
As shown in Figure 1, a kind of low-residual self-destruction syringe, the core bar 2 that comprises needle tubing 1 and be arranged on needle tubing 1 inside, the front end of core bar 2 are provided with the piston seat 3 that is positioned at needle tubing 1.Have cannelure 32 on the piston seat 3, be with piston body 4 on piston seat 3, piston body 4 is placed in the above-mentioned cannelure 32.Cannelure 32 has guaranteed piston body 4 difficult drop-off when sliding.The outside of piston body 4 has some arc bulge loops 41 that distribute successively vertically, and above-mentioned arc bulge loop 41 contacts with needle tubing 1 inwall line.The line contact often can reduce the resistance in the sliding process, so piston resistance in the process of sliding is little, the convenient use; And, effectively guaranteed the sealing between piston body 4 and needle tubing 1 inwall owing to be provided with a plurality of arc bulge loops 41.
Being provided with between piston seat 3 and the needle tubing 1 can be with the location structure 5 of piston seat 3 axial location when piston seat 3 moves to needle tubing 1 front end and piston body 4 and is resisted against needle tubing 1 front end face.As Figure 1-3, location structure 5 comprises locating groove 11 that is arranged on needle tubing 1 inwall and the location hook 31 that is arranged on the piston seat 3.Location hook 31 recedes and can be embedded in the above-mentioned locating groove 11.
As shown in figs. 1 and 3, adopt the syndeton 6 that when piston seat 3 axial location and core bar 2 retreat, can be broken between piston seat 3 and the core bar 2.Syndeton 6 comprises the some thin bars 61 that radially are provided with, and above-mentioned thin bar 61 is at the circumferencial direction uniform distribution, and carefully an end and the piston seat 3 of bar 61 are connected, and the other end and core bar 2 are connected.More particularly, core bar 2 front ends have Connection Block 21, and piston seat 3 rear ends have the joint pin 33 that inserts in the Connection Block 21, and the two ends of above-mentioned thin bar 61 are connected on Connection Block 21 and the joint pin 33.When piston seat 3 is fixed by location structure 5, when core bar 2 retreated, under the effect of pulling force, the thin bar 61 that is connected between piston seat 3 and the core bar 2 was broken easily, has so just realized the disengaging between core bar 2 and the piston seat 3, and syringe is destroyed.
Embodiment two
Location structure 5 is arranged on the locating groove 11 on the piston seat 3 and is arranged on needle tubing 1 inwall and can be embedded in location barb in the above-mentioned locating groove 11.Remaining structure and embodiment and embodiment one roughly the same do not give unnecessary details with regard to not doing at this.
Claims (7)
1. low-residual self-destruction syringe, comprise needle tubing (1) and be arranged on the inner core bar (2) of needle tubing (1), the front end of core bar (2) is provided with the piston seat (3) that is positioned at needle tubing (1), on piston seat (3), be with piston body (4), it is characterized in that, being provided with between described piston seat (3) and the needle tubing (1) when piston seat (3) moves to needle tubing (1) front end and piston body (4) and is resisted against needle tubing (1) front end face can be with the location structure (5) of piston seat (3) axial location, adopts the syndeton (6) that can be broken when retreating when piston seat (3) axial location and core bar (2) between described piston seat (3) and the core bar (2).
2. low-residual self-destruction syringe according to claim 1, it is characterized in that, described location structure (5) comprises the locating groove (11) that is arranged on needle tubing (1) inwall and is arranged on location hook (31) on the piston seat that described location hook (31) recedes and can be embedded in the above-mentioned locating groove (11).
3. low-residual self-destruction syringe according to claim 1, it is characterized in that described location structure (5) is arranged on the locating groove (11) on the piston seat (3) and is arranged on needle tubing (1) inwall and can be embedded in the interior location barb of above-mentioned locating groove (11).
4. according to claim 1 or 2 or 3 described low-residual self-destruction syringes, it is characterized in that, described syndeton (6) comprises the some thin bars (61) that radially are provided with, above-mentioned thin bar (61) is at the circumferencial direction uniform distribution, and an end and the piston seat (3) of thin bar (61) are connected, and the other end and core bar (2) are connected.
5. low-residual self-destruction syringe according to claim 4 is characterized in that, has cannelure (32) on the described piston seat (3), and above-mentioned piston body (4) is placed in the above-mentioned cannelure (32).
6. low-residual self-destruction syringe according to claim 5 is characterized in that, the outside of described piston body (4) has some arc bulge loops (41) that distribute successively vertically, and above-mentioned arc bulge loop (41) contacts with needle tubing (1) inwall line.
7. low-residual self-destruction syringe according to claim 4, it is characterized in that, described core bar (2) front end has Connection Block (21), described piston seat (3) rear end has the joint pin (33) that inserts in the Connection Block, and the two ends of above-mentioned thin bar (61) are connected on Connection Block (21) and the joint pin (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203092781U CN201510603U (en) | 2009-08-31 | 2009-08-31 | Low-residue self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203092781U CN201510603U (en) | 2009-08-31 | 2009-08-31 | Low-residue self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201510603U true CN201510603U (en) | 2010-06-23 |
Family
ID=42481998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203092781U Expired - Fee Related CN201510603U (en) | 2009-08-31 | 2009-08-31 | Low-residue self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201510603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975065A (en) * | 2019-11-28 | 2020-04-10 | 王铁基 | Syringe of anticreep needle |
-
2009
- 2009-08-31 CN CN2009203092781U patent/CN201510603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975065A (en) * | 2019-11-28 | 2020-04-10 | 王铁基 | Syringe of anticreep needle |
| CN110975065B (en) * | 2019-11-28 | 2021-08-10 | 曹苏玲 | Syringe of anticreep needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20180831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |