Biopsy instrument

Abstract

Abstract Instrument for obtaining tissue samples for biopsies is adapted to permit accurate samples to be taken with one-hand. The instrument includes housing (10) which fits into the palm of the physician's hand and has 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 The instrument is then withdrawn from the tissue.

Inventors

• 👤 Dan Beraha
• 👤 Alex Geoffrey Bersin

Bibliographic Details