Biopsy needle with cauterization feature
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United States of America Patent
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-
Nov 26, 1996
Grant Date -
N/A
app pub date -
Nov 4, 1994
filing date -
Nov 4, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A biopsy needle cauterizes the wound caused by the taking of a tissue specimen and the tissues in contact with the biopsy needle prior to withdrawal of the biopsy needle from a person, thereby minimizing bleeding and preventing the proliferation of any existing cancer cells along the path of insertion and withdrawal of the biopsy needle from the body. In contrast with existing biopsy needles, the tissue is excised by retraction of the stylet into the cannula, with the cutting edge being at the junction of the upper surface of the stylet and the front wall of the recess which holds the tissue specimen, rather than excising the tissue by sliding the cannula forward over the recess in the stylet with the cutting means at the leading edge of the cannula.
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