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Catheter convertible from single to multilumen

  • US 5,149,330 A
  • Filed: 01/10/1991
  • Issued: 09/22/1992
  • Est. Priority Date: 01/10/1991
  • Status: Expired due to Term
First Claim
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1. A venous catheter capable of being converted from a single lumen large bore venous catheter into a multilumen catheter comprising:

  • a first flexible elongated large bore catheter tube adapted for insertion in the vein of a patient and having a proximal end, a distal end, an inner wall and a single bore extending there through;

    a second flexible elongated catheter tube having a proximal end, a distal end, an outer wall and defining at least one lumen extending there through and terminating in at least one opening;

    said second catheter tube having an outer diameter which is smaller than the inner diameter of said first catheter tube, and capable of being removably disposed within said first catheter tube abutting a portion of the inner wall of said first catheter tube and defining a single lumen in the portion of the bore between the inner wall of said first catheter tube and the outer wall of said second catheter tube;

    said single lumen terminating in at least one opening in said first catheter tube;

    a connector having a first connector portion affixed to the proximal end of the first catheter tube, and a second connector portion affixed to the proximal end of the second catheter tube, said connector portions being mateable to provide a fluid tight coupling, said connector being a standard luer connector with locking threads;

    said second catheter tube being removably coupled in a fluid tight relationship to said first catheter tube via said mateable connector portions.

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