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Trocar with electrical discharge path

  • US 5,792,112 A
  • Filed: 10/20/1995
  • Issued: 08/11/1998
  • Est. Priority Date: 10/20/1995
  • Status: Expired due to Fees
First Claim
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1. A combination for accessing a body cavity through a body wall, comprising:

  • a trocar including a cannula having an axis and an outer surface, the cannula being adapted to extend through the body wall to provide a working channel into the body cavity;

    a laparoscopic clamp operable to releasably engage the outer surface of the cannula of the trocar and maneuverable to an operative position relative to the body wall in order to provide the cannula and the body wall with a generally fixed relationship;

    a tube included in the clamp and extending axially of the sleeve, the tube having an outer surface for engaging the body wall;

    a protrusion included in the clamp on the outer surface of the tube, the protrusion enhancing the fixed relationship between the clamp and the body wall;

    a coupler included in the clamp and disposed between the tube and the sleeve, the coupler comprising a female portion attached to one of the sleeve and the tube and a male portion attached to the other of the sleeve and the tube;

    a male portion included in the clamp and being snap-fit into the female portion in order to maintain the tube and the sleeve in a generally fixed relationship;

    an elastomeric sleeve included in the laparoscopic clamp and being actuable between a first position wherein the sleeve has a generally fixed relationship with the cannula and a second position wherein the sleeve has a sliding relationship with the cannula; and

    an actuation collar included in the laparoscopic clamp and being operable by only one hand of a user to actuate the sleeve between the first position and the second position in order to adjust the position of the clamp relative to the trocar.

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