A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/32 (2006.01) A61M 5/24 (2006.01) A61M 5/50 (2006.01)
Patent
CA 2117517
This invention relates to a novel cartridge-needle unit having a retractable needle for use with disposable or reusable holders to form safety syringes. The cartridge-needle unit comprises a cartridge comprising a hollow body, a septum at the distal end of the body, means for retaining the septum, and a plunger, axially and reciprocally slidable through the interior of the body; a needle capable of being withdrawn within the cartridge; a hub comprising a sleeve adapted to be snapped on the distal end of the cartridge; means for retaining the needle within the hub during an injection; and means for releasing the needle from the hub after the injection comprising an element capable of passing through the septum. The retractable cartridge-needle unit exhibits improved reliability, reduces the tendency for body fluids and/or medication to remain in an unprotected area upon retraction of the needle and virtually eliminates the possibility that the needle can be released into the patient.
Johnson Kevin M.
O'dea Dennis J.
Abbott Laboratories
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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