×

Safety trocar

  • US 5,116,353 A
  • Filed: 10/05/1990
  • Issued: 05/26/1992
  • Est. Priority Date: 10/05/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A trocar comprising:

  • (a) A cannula assembly comprising a cannula and a cannula housing defining an internal cannula passage;

    (b) a trocar assembly adapted to cooperate with said cannula assembly, said trocar assembly comprising a sharp trocar tip, an obturator shaft, and a trocar housing, said trocar tip and at least a portion of said obturator shaft being configured and dimensioned for entry into said internal cannula passage;

    (c) releasable obturator means associated with the obturator shaft which releasably maintains the trocar tip in an extended position relative to said cannula;

    (d) means for releasing the releasable obturator means; and

    (e) biasing means for retracting the trocar tip from said extended position to a retracted position in response to release of the releasable obturator means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×