Instrument and apparatus for biopsy and a method thereof
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United States of America Patent
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-
Aug 12, 1997
Grant Date -
N/A
app pub date -
Jan 26, 1995
filing date -
Jan 26, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A biopsy instrument includes a tube having a finger-like projection at one end and a canula slidably disposed in the tube. After insertion of the biopsy instrument into a tissue, the tube is displaced on the canula so that the projection passes through an aperture in the canula to sever the tissue sample in the canula bore from the tissue. The projection retains the severed sample in the canula bore during withdrawal of the biopsy instrument from the tissue. A holding and control assembly having a first and second spring is provided for moving the tube and canula in a forward direction to penetrate the tissue and then substantially consecutively moving the tube in the forward direction to sever and retain the sample in the canula bore.
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