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Thrombectomy catheter systems

  • US 10,064,643 B2
  • Filed: 01/18/2016
  • Issued: 09/04/2018
  • Est. Priority Date: 01/26/2012
  • Status: Active Grant
First Claim
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1. A thrombectomy catheter system comprising:

  • a catheter including a catheter body and a high pressure tube, the catheter body defining an exhaust lumen and an infusion lumen, and the high pressure tube having a nozzle orifice positioned to direct a fluid jet into a distal opening of the exhaust lumen, the catheter further comprising a dividing wall dividing the exhaust lumen into a first exhaust lumen section and a second exhaust lumen section;

    a source of infusion fluid communicating with a proximal end of the infusion lumen;

    a fluid control device fluidly coupled between the catheter and the source of infusion fluid, the fluid control device being adapted to regulate a flow rate of infusion fluid from the source of infusion fluid to the infusion lumen of the catheter, wherein the high pressure tube extends through the infusion lumen of the catheter body;

    a recirculation channel positioned in the first exhaust lumen section and configured to recirculate fluid from within the first exhaust lumen section and into a body lumen of a patient; and

    a filter positioned in the first exhaust lumen section and upstream of the recirculation channel, the filter being sized to prevent passage of solid particles into the recirculation channel.

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