Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 18, 2010
Patent Application Number
11718771
Date Filed
November 24, 2005
Patent Primary Examiner
Patent abstract
The invention relates to a perfected retractable needle safety syringe comprising a hollow cylinder, a needle holder, a needle and a piston with an operating stem, said stem exhibiting an axial hole wherein there are seated a retraction pre-loaded spring and an extractor element. The extractor element exhibits a recess or seat intended for interacting with the needle holder, and at the side opposite the needle holder, a projection or annular rib.
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