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Title:
SAFETY HYPODERMIC SYRINGE WITH RETRACTABLE NEEDLE CARRIER
Document Type and Number:
WIPO Patent Application WO/2007/025414
Kind Code:
A1
Abstract:
A safety hypodermic syringe with retractable needle carrier is disclosed. The safety hypodermic syringe of the present invention comprises a barrel, a plunger, a needle carrier and a needle cap. The needle cap may enclose the needle. A plurality of engagement members are provided on the outside of the needle carrier, and a plurality of engagement members are provided on inner side of the plunger; the engagement members of the needle carrier may engage with the engagement members of the plunger so that the needle carrier may be securely held at the distal end of the barrel. A plurality of positioning members are provided on the inner side of the needle carrier, and a plurality of positioning members are provided on distal end of the plunger; the positioning members of the needle carrier may engage with the positioning members of the plunger so that the needle carrier may be connected with the plunger. A break-apart member and a neck portion will allow a user to break the plunger apart. Hence, a user may first use the plunger to position the needle carrier in place, administrate an injection, pull the plunger backwards to retract the needle carrier and keep the needle carrier inside the barrel so that no person will have a direct contact with the hypodermic needle.

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Inventors:
WU WEISHUI (CN)
Application Number:
PCT/CN2005/001385
Publication Date:
March 08, 2007
Filing Date:
September 02, 2005
Export Citation:
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Assignee:
WU WEISHUI (CN)
International Classes:
A61M5/178; A61M5/31; A61M5/50
Foreign References:
CN2461574Y2001-11-28
CN2395732Y2000-09-13
CN2140753Y1993-08-25
CN1049285A1991-02-20
CN1049457A1991-02-27
CN2170110Y1994-06-29
CN1100958A1995-04-05
CN2654143Y2004-11-10
CN2661216Y2004-12-08
US5346474A1994-09-13
US20050033228A12005-02-10
FR2854806A32004-11-19
Attorney, Agent or Firm:
ADVANCE CHINA I. P. LAW OFFICE (9/F Dong Shan Plaza, No. 69 Xianlie Central Roa, Guangzhou Guangdong 5, CN)
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