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Surgical appliance and a method for introducing drainage tubing into cavities

  • US 4,617,929 A
  • Filed: 06/18/1984
  • Issued: 10/21/1986
  • Est. Priority Date: 06/18/1983
  • Status: Expired due to Fees
First Claim
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1. A surgical appliance capable of being temporarily placed in a body for assisting in the passage of a tube through a puncture formed in the skin of the body, contraction of the skin around the tube, once the appliance is removed, assisting in holding the tube in place, said surgical appliance comprising:

  • a trochar having a proximal end, a distal end and being divided into a plurality of separate components;

    at least one tooth on the proximal end of each of said components;

    a rotary actuator for said plurality of trochar components, said actuator having a central channel therethrough, a spiral formation on said actuator cooperating with said teeth on said trochar components so that rotation of said actuator about the longitudinal axis of said trochar produces parallel radial motion of each of said trochar components having at least one tooth thereon with respect to each other from a closed position in which such components lie substantially parallel and adjacent to each other thereby to form a composite trochar to an open position wherein such components are substantially axially parallel with each other and separated radially to create a trochar central channel through said trochar components, said trochar central channel formed within said trochar components forming a continuation of said first named central channel through said actuator to provide channel means within said appliance through which a tube can be positioned with one end thereof extending into the puncture, and said appliance being capable of being removed from around the tube to leave only the tube in place within the puncture formed in the skin, contraction of the skin adjacent the puncture around the tube upon removal of said appliance assisting in holding the tube in place.

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