Biopsy device

Details Biopsy device Biopsy device

1988-10-25

1990-04-24

Hindenburg, Max

Surgery

Truss

Pad

128753, 128759, 128755, 604 27, 604 51, 604164, 604187, 604218, A61B 1000

Patent

active

049191462

ABSTRACT:
A biopsy device utilizes three components: a housing having an attached cannula, a drill bit/plunger component which is mounted in the housing so that the drill bit portion, having a cutting tip, extends through the cannula, the plunger snugly fitting within the housing, and a rotational energy element which couples with the drill bit/plunger component to enable the impartation of rotational motion to the cutting tip. Both drilling and aspirating action are utilized to retrieve a biopsy sample. In operation, the tissue to be sampled is punctured by a biopsy needle, the cannula of which is connected to the biopsy device. Thereafter, rotational energy is imparted to the drill bit/plunger component, causing tissue to be accumulated on the cutting tip. Once a sufficient amount of tissue has been accumulated, the rotational energy element and plunger/drill bit component are displaced in a proximal direction from the housing to cause the sample to be aspirated into the cannula syringe. The biopsy device is withdrawn from the tissue, and the sample is retrieved by exerting longitudinal pressure in a distal direction on the rotational energy element and, in turn, the drill bit/plunger component.

REFERENCES:
patent: 1867624 (1932-07-01), Hoffman
patent: 2850007 (1958-09-01), Lingley
patent: 3749085 (1973-07-01), Willson et al.
patent: 3837345 (1974-09-01), Matar
patent: 4177797 (1979-12-01), Baylis et al.
patent: 4461305 (1984-07-01), Cibley
patent: 4542749 (1985-09-01), Caselgrandi et al.

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