Biopsy needle

Details Biopsy needle Biopsy needle

1991-07-24

1994-01-18

Kamm, William E.

Surgery

Truss

Pad

128754, A61B 1000

Patent

active

052793060

ABSTRACT:
Biopsy needle for bone marrow biopsies or the like including a cannula, a cannula housing supporting the cannula, and a stylet including a stylet cap supporting the stylet wherein the stylet engages into the cannula in a predetermined relationship and the stylet cap interlocks to the cannula housing. The cannula housing includes vertical wings extending outwardly from the housing for engagement with the palm of a physician's hand, a cannula having formed ends which engage and secure into the cannula housing, and an elongated button extending outwardly from the top of the cannula housing for detent locking with the stylet cap providing for alignment of the stylet to the cannula of the biopsy needle. The stylet includes a longitudinal member having a ground and buffered beveled end maintaining a knife-sharp edge around the tip, and the other end of the stylet is bent and molded into the stylet cap where the stylet cap includes a spring detent locking groove for interlocking with the button of the cannula housing. The stylet inserts into the cannula and with a twist locks about the top of the cannula with a positive digital sensory feedback signal to the physician.

REFERENCES:
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patent: 4163446 (1979-08-01), Jamshidi
patent: 4258722 (1981-03-01), Sessions et al.
patent: 4262676 (1981-04-01), Jamshidi
patent: 4266555 (1981-05-01), Jamshidi
patent: 4314565 (1982-02-01), Lee
patent: 4356828 (1982-11-01), Jamshidi
patent: 4379458 (1983-04-01), Bauer et al.
patent: 4469109 (1984-09-01), Mehl

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