Trocar system having penetration indicator

Details Trocar system having penetration indicator Trocar system having penetration indicator

1993-03-31

1994-10-04

Weiss, John G.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604158, 604264, 606185, A61M 5178

Patent

active

053522060

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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