Automatic biopsy instrument with independently actuated stylet and cannula
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United States of America Patent
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-
Feb 23, 1993
Issued Date -
N/A
app pub date -
Apr 24, 1991
filing date -
Nov 7, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic biopsy instrument includes a cannula 13 provided over a stylet 11. The stylet 11 directs the cannula 13 to a biopsy site. The instrument urges the cannula 13 past the stylet 11 in order to collect a tissue sample. The stylet 11 initially travels in a direction opposite to the direction of travel of the cannula 13, then travels in the direction of travel of cannula 13 in order to assist firstly in collecting a sample and secondly to assist in severing the tissue sample from the surrounding mass.
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