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Seeping flow anti-clotting blood catheter

  • US 10,661,050 B2
  • Filed: 04/11/2018
  • Issued: 05/26/2020
  • Est. Priority Date: 01/14/2014
  • Status: Active Grant
First Claim
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1. A catheter comprising:

  • an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face;

    a lining covering at least a portion of the exterior face and substantially limiting a perfusion through the exterior face at the portion of the exterior face covered by the lining;

    a fitting coupled to the proximal end of the elongated tube, the fitting configured to flow a first fluid into the porous material and a second fluid into the lumen, the fitting including a collar disposed about a circumference of the catheter and configured to inject the first fluid into the porous material through the exterior face of the porous material; and

    one or more of;

    the catheter being impregnated with a material that prevents buildup of material on one of an inner face or an outer face of the catheter; and

    the lining being coated with one or more of an anticoagulant, antibiotic, or antithrombotic.

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