Biopsy needle having integral stylet locking device

Details Biopsy needle having integral stylet locking device Biopsy needle having integral stylet locking device

1979-08-24

1981-04-21

Howell, Kyle L.

Surgery

Truss

Pad

128754, 128310, A61B 1000

Patent

active

042626765

ABSTRACT:
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.

REFERENCES:
patent: 2496111 (1950-01-01), Turkel
patent: 2850007 (1958-09-01), Lingley
patent: 3001522 (1961-09-01), Silverman
patent: 3175554 (1965-03-01), Stewart
patent: 3598108 (1971-08-01), Jamshidi
patent: 3628524 (1971-12-01), Jamshidi
patent: 3995619 (1976-12-01), Glatzer

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