Title of Invention

DISPOSABLE SYRINGE WITH A RETRACTABLE NEEDLE

Abstract

A disposable syringe includes a barrel (1) having a retaining region (121) to retain a needle seat (21) for carrying a needle cannula (22), and a friction diminishing region (122) extending forwardly from the retaining region (121) and terminating at a shoulder abutment (124), a plunger (4) movable in the barrel (1) toward the needle seat (21), and a coupling member (51) biased by a biasing member (52,54) and having a retained portion (512)to frictionally engage the plunger (4), and an anchored portion (514) to engage an anchoring portion (213) of the needle seat (21) such that when the needle seat (21) is moved past the friction diminishing region (122) to abut against the shoulder abutment (124), a subsequent pushing force applied to the plunger (4) results in release of the retained portion (512) from the plunger (4), thereby enabling the anchored portion (514) to be moved into the plunger (4) by means of the biasing member (52,54).

Full Text

Documents:

559-KOL-2004-FORM 27.pdf

559-KOL-2004-FORM-27.pdf

559-kol-2004-granted-abstract.pdf

559-kol-2004-granted-claims.pdf

559-kol-2004-granted-correspondence.pdf

559-kol-2004-granted-description (complete).pdf

559-kol-2004-granted-drawings.pdf

559-kol-2004-granted-examination report.pdf

559-kol-2004-granted-form 1.pdf

559-kol-2004-granted-form 18.pdf

559-kol-2004-granted-form 2.pdf

559-kol-2004-granted-form 26.pdf

559-kol-2004-granted-form 3.pdf

559-kol-2004-granted-letter patent.pdf

559-kol-2004-granted-reply to examination report.pdf

559-kol-2004-granted-specification.pdf