Biopsy apparatus and methods of constructing and utilizing same

Details Biopsy apparatus and methods of constructing and utilizing same Biopsy apparatus and methods of constructing and utilizing same

A - Human Necessities

61

M

128/93

A61M 5/32 (2006.01) A61B 10/00 (2006.01)

Patent

CA 1129746

ABSTRACT OF THE DISCLOSURE The present invention provides an apparatus for extracting biopsy samples and the like, comprising, in combination: an elongat- ed hollow outer cannula having open distal and proximal ends, said distal end defining a cutting edge; solid inner means corresponding generally in length and shape to said outer cannula and being adap- ted to be tightly received within said hollow outer cannula for initial penetration of the body tissue; a hollow inner cannula adapted to be received within said hollow outer cannula after said solid initial puncture means has been removed therefrom; said inner cannula having an elongated distal cutting end section which projects beyond the distal cutting edge of said outer cannula when said inner cannula is introduced thereinto in operative position; and said distal cutting end section of said inner cannula having disposed therein cutting means for cutting the body tissue as the inner cannula is withdrawn from the body and thus causing the tissue sample to be collected interiorly of the hollow inner cannula.

381819

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