CN203815994U - Auto-disable syringe - Google Patents
Auto-disable syringe Download PDFInfo
- Publication number
- CN203815994U CN203815994U CN201420230237.4U CN201420230237U CN203815994U CN 203815994 U CN203815994 U CN 203815994U CN 201420230237 U CN201420230237 U CN 201420230237U CN 203815994 U CN203815994 U CN 203815994U
- Authority
- CN
- China
- Prior art keywords
- piston head
- push rod
- syringe
- needle
- needle tubing
- 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
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Abstract
The utility model discloses an auto-disable syringe. The auto-disable syringe comprises a syringe needle, a needle tube, a needle cap, a piston head, a push rod and a push handle. A syringe needle column is integrally arranged at the front end of the needle tube, the needle cap is arranged on the outer wall of the syringe needle column in a fastening mode, the push handle is arranged at one end of the push rod, and the push rod is connected with the needle tube in an inserting mode. A rubber plug is fixed to the other end of the push rod in a sleeved mode and provided with a rubber layer, and the piston head adheres to the rubber layer. A locking table is arranged on the inner wall of the front end of the needle tube and is of a ring shape. The section of the piston head is of a T shape, the piston head is pushed to the front end of the needle tube under the effect of the acting force of the push rod, and then the piston head and the locking table are fixed in a clamping mode. The piston head is a rubber product. The locking table and the needle tube are integrally formed when manufactured, the locking table is a plastic product, and the piston rod is separated from the rubber plug when the pull rod pulls back so that the piston head can be left on the locking table. The auto-disable syringe is simple in structure, convenient to use, safe and reliable. The piston head is totally locked in the front of the needle tube after injection is completed.
Description
Technical field:
This utility model relates to medical apparatus and instruments, particularly a kind of self-destruction syringe.
Background technology:
Self-destruction syringe is can prevent reusable disposable syringe product after using, kind is various, after injection, rely on craft or mechanical forces, push rod can not be extracted out in syringe, reach self-locking, or the sealing property of piston is destroyed, or the push rod of syringe can be pushed off, finally reach the object that prevents recycling.According to World Health Organization (WHO), estimate, injection is as treatment means common in medical procedure, and the whole world is approximately implemented 12,000,000,000 person-times every year, and wherein approximately 50% is unsafe.The factor that causes unsafe injection is a lot, and the problem that wherein should pay close attention to is especially the re-using of injection device non-sterile and syringe.Hepatitis B approximately 800 to 1,600 ten thousand people are infectd because of unsafe injection every year in the whole world, infect hepatitis C virus 2,300,000 to 4,700,000 people, patients infected hiv 8 to 160,000 people.Interrelated data shows in China's patients infected hiv, have 63% to be that IDU infects.63.5 ten thousand the prophylactic immunization points in the whole nation are upper, can accomplish people's one pin one pipe or disposable injection comparatively safe be only 30.5%, and the unsafe injection of employing one people's one pin (not needle exchange pipe) is 51.6% unexpectedly.The hepatitis B that unsafe injection causes, hepatitis C and aids transmission, become serious public health problem.In view of the above problems, the technology that has occurred on the market self-destroyed syringe, for example, the length that pushes away handle is less than the length of syringe, pushes after the syringe end pushing away handle, pushes away handle and is trapped in syringe and cannot takes out, but, the limitation of this structure is need to be trapped in syringe when thumb pushes away medicine, and the aperture of syringe must be strengthened, inapplicable for dose injection.For another example, by the middle rear end at syringe inwall, buckle is set, buckle and push rod are fastened and connected, push rod is after pushing the syringe end, and push rod and syringe connect and fix by buckle, causes push rod to extract, the defect of this technology is, the push rod of firmly choosing, push rod can make buckle damaged, and push rod is still extracted, the piston head of the termination of the push rod after extracting is intact, as long as piston head is intact, under the promotion of push rod, still can complete function of injection with syringe, do not accomplish self-destruction completely.China Patent No. and for example: 201220549823.6 self-destruction syringe.This technical scheme is: comprise syringe needle, needle tubing, piston and nook closing member, it is characterized in that two ends are fixed with hour hand inside needle tubing front end, when injecting to patient, promote forward piston injection liquid simultaneously, hour hand thrusts piston, hour hand pierces through piston and destroys piston seal performance, and then reaches disposable object.But in actual use, because the diameter of hour hand is too little, piston is again rubber, even if pierce through after piston, the distinctive elastic potential energy of rubber can be again airtight by the pin hole piercing through, sealing effectiveness still exists, and piston still can move around in needle tubing, fails thoroughly to stop the possibility that secondary is used.Now need to occur a kind of simple in structure, easy to use, safe and reliable, piston head is completely locked at needle tubing front portion after injection completes, a kind of self-destruction syringe that can not move backward.
Summary of the invention:
The purpose of this utility model is to overcome the shortcoming existing in prior art, provides a kind of simple in structure, easy to use, safe and reliable, and piston head is completely locked at needle tubing front portion after injection completes, a kind of self-destruction syringe that can not move backward
To achieve these goals, this utility model provides a kind of self-destruction syringe, comprise syringe needle, needle tubing, pin cap, piston head, push rod and push away handle, the integrated syringe needle post that is provided with of needle tubing front end, between syringe needle post and syringe needle, plug together and be connected, on syringe needle column outer wall, fasten and have pin cap, push rod one end is provided with and pushes away handle, between push rod and needle tubing, plug together and be connected, wherein, the other end of push rod has been fixed by socket rubber plug, on rubber plug, be provided with glue-line, on glue-line, be bonded with piston head, on the inwall of needle tubing front end, be provided with locking platform, locking platform is circular, the cross section of piston head is T-shaped, after piston head is pushed into needle tubing front end under the active force of push rod and then piston head and locking are connected and fixed between platform.
Described piston head is rubber, and described locking platform and described needle tubing are one-body molded during fabrication, and described locking platform is plastic, and described push rod is pulled back and made piston head depart from rubber plug and then piston head is retained on locking platform.
Describedly push away handle and described push rod is one-body molded during fabrication.
Further, locking platform internal diameter is 1: 1.1 with the diameter ratio of piston head the widest part.Make after piston head clamp-ons in the space that locking platform and needle tubing front end form under push rod active force, to be difficult to extract.
The diameter of described rubber plug is 1: 1 with needle tubing internal diameter ratio, and push rod pulls rubber plug to complete and takes out medicine operation.
Further, when this utility model is taken out medicine, pull push rod, utilize piston principle between rubber plug and needle tubing to complete and take out medicine, during evacuation needle inner air tube, can not too promote push rod, in order to avoid locked piston head, therefore, further, needle tubing of the present utility model is transparent plastic.
Further, described piston head is shaped as mushroom head.
Further, rubber plug is more than or equal to the diameter of push rod.
The utility model has the advantage of, simple in structure, easy to use, safe and reliable, piston head is completely locked at needle tubing front portion after injection completes, and can not move backward.Be specially:
When this utility model is used, syringe needle is inserted in medicine bottle, pull push rod backward, the suction that medicine forms between rubber plug and needle tubing enters in needle tubing, extract after syringe needle, (attention can not too promote push rod slowly to promote air in the emptying needle tubing of push rod, the stuck piston head of one side), during injection, promote push rod, piston head is clamp-oned in the space of locking platform and needle tubing front end formation, firmly (cross section of piston head is T-shaped to the locked decometer of piston head, be stuck in circular locking platform), while pulling back push rod, glue-line only plays the effect of bonding piston head and rubber plug, under pulling force effect, rubber plug departs from from piston head, piston head has blocked the front end of needle tubing, complete self-destruction.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model,
Fig. 2 is using state schematic diagram of the present utility model,
Fig. 3 is piston head of the present utility model and rubber plug disengaged position schematic diagram.
Accompanying drawing sign:
1, pin cap 2, syringe needle 3, syringe needle post
4, rubber plug 5, locking platform 6, needle tubing
7, piston head 8, push rod 9, push away handle
10, glue-line
The specific embodiment:
Below in conjunction with accompanying drawing, this utility model is described.As Figure 1-3, Fig. 1 is structural representation of the present utility model, and Fig. 2 is using state schematic diagram of the present utility model, and Fig. 3 is piston head of the present utility model and rubber plug disengaged position schematic diagram.
This utility model comprises syringe needle 2, needle tubing 6, pin cap 1, piston head 7, push rod 8 and push away handle 9, the integrated syringe needle post 3 that is provided with of needle tubing 6 front ends, between syringe needle post 3 and syringe needle 2, plug together and be connected, on syringe needle post 3 outer walls, fasten and have pin cap 1, push rod 8 one end are provided with and push away handle 9, between push rod 8 and needle tubing 6, plug together and be connected, wherein, the other end of push rod 8 has been fixed by socket rubber plug 4, on rubber plug 4, be provided with glue-line 10, on glue-line 10, be bonded with piston head 7, on the inwall of needle tubing 6 front ends, be provided with locking platform 5, locking platform 5 is circular, the cross section of piston head 7 is T-shaped, after piston head 7 is pushed into needle tubing 6 front ends under the active force of push rod 8 and then piston head 7 and locking are connected and fixed between platform 5.Piston head 7 is rubber, and locking platform 5 is one-body molded during fabrication with needle tubing 6, and locking platform 5 is plastic, and push rod 8 is pulled back and made piston head 7 depart from rubber plug 4 and then piston head 7 is retained on locking platform 5.Push away handle 9 one-body molded during fabrication with push rod 8.
Further, locking platform 5 internal diameters are 1: 1.1 with the diameter ratio of piston head 7 the widest part.Make after piston head 7 clamp-ons in the space that locking platform 5 and needle tubing 6 front ends form under push rod active force, to be difficult to extract.The diameter of rubber plug 4 is 1: 1 with needle tubing 6 internal diameter ratios, and push rod pulls rubber plug to complete and takes out medicine operation.Further, when this utility model is taken out medicine, pull push rod, utilize piston principle between rubber plug and needle tubing to complete and take out medicine, during evacuation needle inner air tube, can not too promote push rod, in order to avoid locked piston head, therefore, further, needle tubing of the present utility model is transparent plastic.Further, described piston head 7 is shaped as mushroom head.Further, rubber plug 4 is more than or equal to the diameter of push rod 8.
This utility model is simple in structure, easy to use, safe and reliable, and piston head is completely locked at needle tubing front portion after injection completes, and can not move backward.When this utility model is used, syringe needle is inserted in medicine bottle, pull push rod backward, the suction that medicine forms between rubber plug and needle tubing enters in needle tubing, extract after syringe needle, (attention can not too promote push rod slowly to promote air in the emptying needle tubing of push rod, the stuck piston head of one side), during injection, promote push rod, piston head is clamp-oned in the space of locking platform and needle tubing front end formation, firmly (cross section of piston head is T-shaped to the locked decometer of piston head, be stuck in circular locking platform), while pulling back push rod, glue-line only plays the effect of bonding piston head and rubber plug, under pulling force effect, rubber plug departs from from piston head, piston head has blocked the front end of needle tubing, complete self-destruction.
Claims (2)
1. a self-destruction syringe, comprise syringe needle, needle tubing, pin cap, piston head, push rod and push away handle, the integrated syringe needle post that is provided with of needle tubing front end, between syringe needle post and syringe needle, plug together and be connected, on syringe needle column outer wall, fasten and have pin cap, push rod one end is provided with and pushes away handle, between push rod and needle tubing, plug together and be connected, it is characterized in that, the other end of push rod has been fixed by socket rubber plug, on rubber plug, be provided with glue-line, on glue-line, be bonded with piston head, on the inwall of needle tubing front end, be provided with locking platform, locking platform is circular, the cross section of piston head is T-shaped, after piston head is pushed into needle tubing front end under the active force of push rod and then piston head and locking are connected and fixed between platform.
2. self-destruction syringe according to claim 1, it is characterized in that, described piston head is rubber, described locking platform and described needle tubing are one-body molded during fabrication, described locking platform is plastic, and described push rod is pulled back and made piston head depart from rubber plug and then piston head is retained on locking platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230237.4U CN203815994U (en) | 2014-04-29 | 2014-04-29 | Auto-disable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230237.4U CN203815994U (en) | 2014-04-29 | 2014-04-29 | Auto-disable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203815994U true CN203815994U (en) | 2014-09-10 |
Family
ID=51471542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420230237.4U Expired - Fee Related CN203815994U (en) | 2014-04-29 | 2014-04-29 | Auto-disable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203815994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436381A (en) * | 2014-10-22 | 2015-03-25 | 浙江理工大学 | Self-destroying type syringe |
| CN113117191A (en) * | 2021-05-13 | 2021-07-16 | 深圳惠迈智能科技有限公司 | Automatic injection pen |
-
2014
- 2014-04-29 CN CN201420230237.4U patent/CN203815994U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436381A (en) * | 2014-10-22 | 2015-03-25 | 浙江理工大学 | Self-destroying type syringe |
| CN113117191A (en) * | 2021-05-13 | 2021-07-16 | 深圳惠迈智能科技有限公司 | Automatic injection pen |
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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: 20140910 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |