Surgery – Truss – Pad
Patent
1995-04-04
1996-10-08
Hindenburg, Max
Surgery
Truss
Pad
604194, A61B 500
Patent
active
055621031
ABSTRACT:
A phlebotomy system including a needle assembly, a retraction assembly, and a cylindrical barrel. The needle assembly includes a needle cannula with first and second ends, a needle sleeve for supporting the needle cannula and having a flared proximal end, and a hub into which the needle sleeve is inserted. The cylindrical barrel is threadedly secured to the hub. The retraction assembly includes a central plate with a central opening through which the needle sleeve extends. When a downward force is applied to the retraction assembly, the retraction assembly to moved to an active position such that a locking port is axially aligned with and thereby engages the needle sleeve. Hence, the locking port engages the flared proximal end of the needle sleeve when the retraction assembly is moved rearward and the needle cannula is retracted into the barrel. In an alternative embodiment, the needle sleeve is threadedly engaged with the central opening of the retraction assembly and rearward movement of the retraction assembly likewise results in retraction of the needle cannula into the barrel.
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Hindenburg Max
Wingood Pamela L.
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