CN2501514Y - Disposable self-destroyable safety syringe - Google Patents
Disposable self-destroyable safety syringe Download PDFInfo
- Publication number
- CN2501514Y CN2501514Y CN 01243599 CN01243599U CN2501514Y CN 2501514 Y CN2501514 Y CN 2501514Y CN 01243599 CN01243599 CN 01243599 CN 01243599 U CN01243599 U CN 01243599U CN 2501514 Y CN2501514 Y CN 2501514Y
- Authority
- CN
- China
- Prior art keywords
- syringe
- needle holder
- piston
- sealing ring
- disposable use
- 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
- 238000007789 sealing Methods 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 206010011409 Cross infection Diseases 0.000 description 3
- 206010029803 Nosocomial infection Diseases 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram 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
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 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
Images
Abstract
The utility model relates to a disposable self-destroying safe syringe, including a syringe tube, a syringe needle base, a seal ring, a piston and a push rod, the front end of the syringe tube has a cylinder hole, the syringe needle base is slidingly installed in the cylinder hole of the syringe tube, the rear end of the syringe needle base is provided with an aspiration cone with stalk, the front end of the piston is provided with a film area, the front end of the push rod in the piston is provided with an elastic clamp, the inner wall of the cylinder hole at the front of the syringe tube is axially provided with a plurality of strip salients, the outer wall of the syringe needle base is correspondingly and axially provided with a plurality of strip grooves. The rear of the syringe needle base forms a flat cone shape with a certain taper. The utility model is provided with simple structure, convenient and stable assembly, when used, the syringe needle base can be rotated, which has good safety performance, and self-destroying can be realized after an injection, which has a reliable self-destroying function.
Description
This utility model relates to a kind of medical apparatus and instruments, specifically a kind of disposable use self-destroy safety injector.
As everyone knows, syringe is a kind of medical apparatus commonly used.It generally comprises syringe, piston, push rod, syringe needle.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, form by syringe, needle holder, sealing ring, rubber piston and push rod, the syringe front end has cylindrical hole, needle holder is to slide and packs in the syringe cylindrical hole, is realized airtightly by sealing ring, and 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 because that syringe and needle holder are provided with step is spacing, design, connect rationally inadequately, needle holder is easily rotated, and syringe needle can not be changed, the assembling difficulty, and to the strictness of sealing ring dimensional requirement, serviceability is stablized inadequately.
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art, and a kind of simple structure is provided, and easy to use, stable, security performance is good, is self-destruction after the shot, the disposable use self-destroy safety injector of damage reliable in function.
For achieving the above object, a kind of disposable use self-destroy safety injector of this utility model, it comprises syringe, needle holder, sealing ring, piston, push rod, 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 provided with the puncture cone of band handle, piston nose is provided with thin film region, the push rod front end is provided with collet in the piston, it is characterized in that syringe front end cylindrical hole inwall is axially arranged with some strip bulges, the sealing ring front portion correspondingly is axially arranged with some strip grooves on the needle holder outer wall.This utility model needle holder sealing ring rear portion is flat tapered, and its tapering is 5 °~20 °, and flat horizontal surface is provided with the through hole that links to each other with centre bore.Correspondingly also be processed with certain tapering at syringe cylindrical hole seal groove rear portion.Its effect is by tapering location, prevents that needle holder from extruding from front end, and easy to assembly, and dimensional requirement is lower.This utility model back end of syringe is provided with locking mechanism, and it is provided with two boss on the syringe circumference, and inboard boss is sawtooth pattern, is provided with piston push pedal locating slot between boss.After injection finished like this, can be locked piston and push pedal can not move forward them, can not pull back.This utility model simple structure, easy to use, stable, during use, needle holder can not rotated, and security performance is good, can realize self-destruction after the shot, the damage reliable in function.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of this utility model needle holder;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the local enlarged diagram of this utility model syringe front end;
Fig. 5 is the local enlarged diagram of this utility model back end of syringe
As can be seen from Figure 1, a kind of disposable use self-destroy safety injector of this utility model, it comprises syringe 5, needle holder 3, sealing ring 2, piston 4, push rod 6.Syringe 5 front ends have cylindrical hole, and needle holder 3 is to slide and packs in syringe 5 cylindrical holes, realizes airtight by sealing ring 2.Needle holder 3 front ends connect entry needle 1.Needle holder 3 rear ends are provided with the puncture cone 11 of band handle, piston nose is provided with thin film region, and the push rod front end is provided with collet in the piston, and the puncture cone is worn out the rubber piston thin film region at the injection terminal point, agree with collet, needle holder is drawn in the syringe together with injection needle.This utility model push rod 6 and on push pedal between be provided with weak area in the connection damage so that separate.Can find out that from Fig. 2, Fig. 3 needle holder 3 is provided with the locating slot 9 of sealing ring 2, is with sealing ring 2 on it, sealing ring 2 matches with seal groove 13 on the syringe 5 front end cylindrical holes, and is airtight to realize.Also play a part to stop needle holder when drawing liquid and puncture, in syringe, to move simultaneously.Needle holder 3 sealing ring rear portions are flat tapered, and its tapering α is 5 °~20 °, and flat horizontal surface is provided with the through hole 10 that links to each other with centre bore, to form medicine liquid channel.Correspondingly syringe cylindrical hole seal groove rear portion also is processed as certain tapering, and it is consistent with flat tapered needle holder tapering, sees Fig. 4.Like this, can play good tapering positioning action, prevent that needle holder from extruding from front end, and can reduce the residual liquid amount of injection effectively, and, easy to assembly, lower to the sealing ring dimensional requirement.The sealing ring front portion is axially arranged with some strip grooves 7 or projection on this utility model needle holder 3 outer walls, it matches with strip bulge or groove on the syringe 5 front end cylindrical hole inwalls, prevent that needle holder 3 from rotating in syringe 5 cylindrical holes, guarantee the stable, reliable of serviceability.This utility model needle holder 3 external conical sleeve inwalls are provided with screw thread 8, and it cooperates with entry needle 1 needle stand, and syringe needle can be convenient for changing, and assembling is reliable, stable.
As can be seen from Figure 4, this utility model syringe 5 front end cylindrical hole inwalls are axially arranged with strip bulge 12 or groove, and it matches with strip groove 7 or projection on needle holder 3 outer walls, prevent that needle holder 3 from rotating in syringe 5 cylindrical holes.Same purpose axially can also be provided with the anti-rotation ratchet at syringe 5 front end cylindrical hole inwalls, also is axially arranged with the anti-rotation ratchet on needle holder 3 outer walls; Perhaps syringe 5 adopts keyway to cooperate with needle holder 3, rotates mutually to stop between them, guarantees the stable, reliable of serviceability.This utility model cylindrical hole seal groove rear portion also is processed as certain tapering, and it is consistent with flat tapered needle holder tapering, plays the role of positioning.Also be provided with seal groove 13 on the syringe 5 front end cylindrical holes, be used for cooperating airtight, location with sealing ring 2.
As can be seen from Figure 5, this utility model syringe 3 rear ends are provided with locking mechanism, and it is provided with two boss 14,15 on the syringe circumference, and inboard boss 14 is sawtooth pattern, and boss 15 internal diameters in the outside are provided with piston push pedal locating slot 16 less than the diameter of push pedal between boss.After injection finished like this, pull push rod 6 drove pistons 4 and moves with push pedal and after being connected the needle holder of agreeing with, syringe needle etc., and after push pedal was crossed boss 14 and entered locating slot 16, it was locked therein, can not move forward, and can not pull back.At this moment, curved moving lightly push rod by itself and weak area on push pedal is connected, can realize separating self-destruction.Syringe needles etc. also are enclosed in the syringe 5, realize disposable use.
This utility model simple structure, easy to assembly, stable, during use, needle holder can not rotated, and security performance is good, is self-destruction after the shot, the damage reliable in function.Its basic composition structure and existing disposable syringe are produced compatible, help producing and promoting the use of.
Claims (5)
1, a kind of disposable use self-destroy safety injector, it comprises syringe, needle holder, sealing ring, piston, push rod, 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 provided with the puncture cone of band handle, piston nose is provided with thin film region, the push rod front end is provided with collet in the piston, it is characterized in that syringe front end cylindrical hole inwall is axially arranged with some strip bulges, the sealing ring front portion correspondingly is axially arranged with some strip grooves on the needle holder outer wall.
2, disposable use self-destroy safety injector as claimed in claim 1 is characterized in that said needle holder sealing ring rear portion is flat tapered, and its tapering is 5 °~20 °, and flat horizontal surface is provided with the through hole that links to each other with centre bore.
3, disposable use self-destroy safety injector as claimed in claim 1 is characterized in that said syringe cylindrical hole seal groove rear portion establishes and the corresponding tapering of flat tapered needle holder.
4, disposable use self-destroy safety injector as claimed in claim 1 is characterized in that said back end of syringe is provided with locking mechanism, and it is provided with two boss on syringe inwall circumference, and inboard boss is sawtooth pattern, is provided with piston push pedal locating slot between boss.
5, disposable use self-destroy safety injector as claimed in claim 1 is characterized in that said needle holder external conical sleeve inwall is provided with screw thread.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01243599 CN2501514Y (en) | 2001-06-20 | 2001-06-20 | Disposable self-destroyable safety syringe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01243599 CN2501514Y (en) | 2001-06-20 | 2001-06-20 | Disposable self-destroyable safety syringe |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2501514Y true CN2501514Y (en) | 2002-07-24 |
Family
ID=33655180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 01243599 Expired - Fee Related CN2501514Y (en) | 2001-06-20 | 2001-06-20 | Disposable self-destroyable safety syringe |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2501514Y (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006131074A1 (en) * | 2005-06-09 | 2006-12-14 | Jishui Ying | Self-destructed disposable syringe |
WO2007065324A1 (en) * | 2005-12-10 | 2007-06-14 | Shandong Weigao Group Medical Polymer Co., Ltd | A disposable safety syringe |
CN1706506B (en) * | 2004-06-04 | 2010-12-22 | 云石科技有限公司 | Disposable injector |
CN101081320B (en) * | 2007-06-27 | 2011-12-21 | 王兴章 | Neilsbed seal ring assembling device of the safety type self-destructing syringe assembly machine |
-
2001
- 2001-06-20 CN CN 01243599 patent/CN2501514Y/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1706506B (en) * | 2004-06-04 | 2010-12-22 | 云石科技有限公司 | Disposable injector |
WO2006131074A1 (en) * | 2005-06-09 | 2006-12-14 | Jishui Ying | Self-destructed disposable syringe |
WO2007065324A1 (en) * | 2005-12-10 | 2007-06-14 | Shandong Weigao Group Medical Polymer Co., Ltd | A disposable safety syringe |
CN101081320B (en) * | 2007-06-27 | 2011-12-21 | 王兴章 | Neilsbed seal ring assembling device of the safety type self-destructing syringe assembly machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: MEDICAL HIGH MOLECULAR PRODUCT CO., LTD., SHANDONG Free format text: FORMER NAME OR ADDRESS: SHANDONG WEIGAO GROUP CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Patentee after: Products of Medical Polymer Co., Ltd., of Weigao Group, Shandong Patentee before: Weigao Group Co., Ltd., Shandong |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020724 Termination date: 20100620 |