CN2501514Y - Disposable self-destroyable safety syringe - Google Patents

Disposable self-destroyable safety syringe Download PDF

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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
Application number
CN 01243599
Other languages
Chinese (zh)
Inventor
金益红
夏欣瑞
孙德胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Weigao Group Medical Polymer Co Ltd
Original Assignee
Shandong Weigao Group Medical Polymer Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Weigao Group Medical Polymer Co Ltd filed Critical Shandong Weigao Group Medical Polymer Co Ltd
Priority to CN 01243599 priority Critical patent/CN2501514Y/en
Application granted granted Critical
Publication of CN2501514Y publication Critical patent/CN2501514Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

Disposable use self-destroy safety injector
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.
CN 01243599 2001-06-20 2001-06-20 Disposable self-destroyable safety syringe Expired - Fee Related CN2501514Y (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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