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Bi-directional flow catheter with retractable trocar/valve structure

  • US 4,180,068 A
  • Filed: 04/13/1978
  • Issued: 12/25/1979
  • Est. Priority Date: 04/13/1978
  • Status: Expired due to Term
First Claim
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1. A bi-directional flow catheter comprisingan elongate primary tube having open rearward and forward ends, a side opening in one side thereof, and duct means located rearwardly of said side opening for enabling communication with the interior of the primary tube, anda trocar/valve member disposed in and slidable longitudinally within said primary tube between an insert position and a flow position, said member comprisingan elongate body, one end of which is tapered, said tapered end protruding from the open forward end of the primary tube when the trocar/valve member is in the insert position to facilitate puncture of tissue into which the catheter is inserted,occluding means for preventing communication between the open forward end of the primary tube and said side opening,first passage defining means for enabling communication between said side opening and said duct means when the trocar/valve member is in the flow position, andsecond passage defining means for enabling communication between the open forward end of the primary tube and a point located at the rearward end of said primary tube.

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