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Side load tolerant instruments for use in laparoscopic surgery

  • US 5,743,880 A
  • Filed: 05/31/1995
  • Issued: 04/28/1998
  • Est. Priority Date: 12/21/1992
  • Status: Expired due to Term
First Claim
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1. A side-load tolerant trocar instrument for use in laparoscopic procedures in a body cavity, the instrument comprising:

  • an outer part, the outer part being elongate and bending lengthways when a lateral bending force is applied thereto, the outer part, when bent lengthways by the lateral bending force, including a laterally-displaced portion, wherein the outer part is straight in the absence of the lateral bending force; and

    an inner part, the inner part being an elongate trocar, having a first length, and including a housed portion, the housed portion being part of the first length of the inner part, the housed portion being housed in, and being capable of moving freely axially relative to, the outer part, the housed portion of the inner part having a second length, and being shaped over at least part of the second length to accommodate the laterally-displaced portion of the outer part, wherein the housed portion of the inner part is straight in the absence of the lateral bending force.

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