04262676 is referenced by 132 patents and cites 7 patents.

An elongated hollow biopsy needle assembly which includes a cannula, a stylet arranged to be received within the cannula, a finger-gripping means, and coupling means for orienting the stylet within the cannula and for releasably securing both the cannula and the stylet to the finger-gripping means. The cannula is provided with a generally cylindrical hub which has a bore extending axially thereof, and generally in continuation with the bore of the cannula, with a conical syringe receiving counterbore being formed within the proximal end of the hub. The stylet is provided with a cap member, with the distal-facing surface of the cap being arranged to fit snugly against the proximal-facing surface of the cylindrical hub, thereby achieving substantially closed symmetrical mating end surfaces between the cannula and stylet, and a substantially air-tight cannula.

Biopsy needle having integral stylet locking device
Application Number
Publication Number
Application Date
August 24, 1979
Publication Date
April 21, 1981
Khosrow Jamshidi
610 Winston Ct., St. Paul, 55118
Thomas J Nikolai
Orrin M Haugen
A61B 10/00
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