Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Henry Lao0
Alexander Huang0
David Needleman0
Date of Patent
September 16, 2008
Patent Application Number
10794317
Date Filed
March 5, 2004
Patent Primary Examiner
Patent abstract
Tissue biopsy is performed through a central passage of a cannula covered with a protective sleeve. The protective sleeve is attached at one end to a location at or near a distal end of the cannula. After the biopsy procedure is completed, the cannula is withdrawn so that its exterior slides through the sleeve. In this way, the trailing edge of the sleeve is invaginated within the proximal portions of the itself to envelop the sleeve exterior and reduce the risk of inadvertent tumor cell seeding.
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