Trocar system having penetration indicator
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United States of America Patent
Stats
-
Oct 4, 1994
Grant Date -
N/A
app pub date -
Mar 31, 1993
filing date -
Mar 31, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trocar system comprises an obturator and a trocar cannula. The obturator includes an elongate shaft having a tapered distal end and a proximal end. At least one port is provided near the distal tip of the tapered distal end and open to an axial lumen within the obturator. A mechanism for producing an audible signal in response to superatmospheric pressure at the port, typically a whistle structure, is provided near the proximal end of the trocar. In this way, when the trocar system is introduced to an insufflated region during laparoscopic surgery, an audible whistle will be provided to alert the treating surgeon.
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