Title:
SYRINGE
Document Type and Number:
WIPO Patent Application WO/2017/084057
Kind Code:
A1
Abstract:
Disclosed is a syringe (100), comprising a push-pull device (10), a cylinder device (30) and an injection needle (50). The push-pull device (10) comprises a pull-push rod (12), a spring (14), a fixing seat (16) and a fixing plug (18). The pull-push rod (12) comprises a first end part (120), a second end part (122) and a first accommodation cavity (124). The inner wall of the first end part (120) is provided with a first step (121). The fixing seat (16) comprises a body (160), a buckling convex part (162), a second step (164), a fixing part (166) and a positioning part (168). The body (160) is contained in the first accommodation cavity (124), and the buckling convex part (162) abuts against the top of the first end part (120). The spring (14) is sheathed on the body (160), and is located between the first step (121) and the second step (164). The cylinder device (30) comprises a cylinder (32), a needle seat (34), a fixing rod (36) and a fixing valve (38). The push-pull device (10) is contained inside the cylinder (32). The needle seat (34) is mounted in the syringe (32). The fixing valve (38) is contained inside the needle seat (34). The fixing rod (36) is contained inside the fixing valve (38) and protrudes from the needle seat (34). The syringe automatically retracts the needle into the pull-push rod by using the restoring force of the spring, thereby preventing secondary use of the syringe and accidentally injuring people.
Inventors:
LUO SHAOJI (CN)
ZHANG ZHUOXUAN (CN)
ZHANG ZHUOXUAN (CN)
Application Number:
PCT/CN2015/094978
Publication Date:
May 26, 2017
Filing Date:
November 19, 2015
Export Citation:
Assignee:
GUANGDONG HAIOU MEDICAL APPARATUS STCOK CO LTD (CN)
International Classes:
A61M5/178; A61M5/50
Foreign References:
| CN103721325A | 2014-04-16 | |||
| CN204655699U | 2015-09-23 | |||
| CN103239782A | 2013-08-14 | |||
| CN201701572U | 2011-01-12 | |||
| CN102188766A | 2011-09-21 | |||
| CN101284154A | 2008-10-15 | |||
| CN201375735Y | 2010-01-06 | |||
| US6706019B1 | 2004-03-16 |
Attorney, Agent or Firm:
NOZO & ASSOCIATES (CN)
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