Fine needle aspiration biopsy apparatus and method

Details Fine needle aspiration biopsy apparatus and method Fine needle aspiration biopsy apparatus and method

1991-08-20

1993-04-06

Hindenburg, Max

Surgery

Truss

Pad

128758, 604272, A61B 1000

Patent

active

051994410

ABSTRACT:
A fenestrated, hollow needle mounted in fluid communication to a hollow hub, the hollow hub being mountable to a syringe or other suitable suction device for creating a negative pressure inside the hollow needle while it is inserted into tissue from which a biopsy sample is to be collected. The fenestrations are located adjacent the sharpened tip of the hollow needle and provide a significantly greater quantity of cells for the biopsy sample by scraping the cells from the tissue as the hollow needle in passing through the tissue. The diameter of the fenestrations are limited so as to inhibit tissue from being drawn through the fenestrations into a plugging relationship in the hollow needle. The hollow hub includes a reservoir for receiving the biopsy sample along with a pair of outwardly extending wings for improved and safer handling of the hollow hub.

REFERENCES:
patent: 3766907 (1973-10-01), Muenzer
patent: 4194513 (1980-03-01), Rhine et al.
patent: 4308875 (1982-01-01), Young
patent: 4441509 (1984-04-01), Kotsifas et al.
patent: 4757826 (1988-07-01), Abdulhay
patent: 4799494 (1989-01-01), Wang
patent: 4967762 (1990-11-01), DeVries
patent: 5069224 (1991-12-01), Zinnanti, Jr.

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