Biopsy instrument

Details Biopsy instrument Biopsy instrument

A - Human Necessities

61

B

128/93

A61B 10/00 (2006.01) A61B 17/00 (2006.01)

Patent

CA 1277563

IMPROVED BIOPSY INSTRUMENT ABSTRACT OF THE DISCLOSURE An improved instrument for obtaining tissue samples for biopsies is adapted to permit accurate samples to be taken with one-hand. The instrument includes a housing 10 which fits into the palm of the physician's hand and has a guide tube 12 projecting from the forward end which the physician guides to a point from which a sample is required. A spring- loaded cannula 20 is telescoped within the guide tube and a notched sampling stylet 24 is telescoped within the cannula. The tips of the cannula and stylet project slightly from the distal end of the guide tube. An arming slide 40 is provided which is moved forward by the physician's thumb, advancing the stylet into the tissue and cocking the spring-loaded cannula. The physician's thumb then operates a spring release trigger 19 causing the cannula to snap forward, cutting the tissue sample in the stylet notch 31. The instrument is then withdrawn from the tissue.

537130

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