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Dual lumen sheath for arterial access

  • US 10,737,008 B2
  • Filed: 08/17/2015
  • Issued: 08/11/2020
  • Est. Priority Date: 08/17/2015
  • Status: Active Grant
First Claim
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1. An assembly for insertion of a percutaneous intravascular blood pump and a guidewire, the assembly comprising:

  • a guidewire having proximal and distal ends;

    a stylet having proximal and distal ends;

    a tubular sheath body dimensioned for insertion into a blood vessel through a vessel aperture, and for receiving and delivering an intravascular blood pump, the sheath body including;

    a wall having a proximal end portion, a distal end portion, a longitudinal axis, an outer surface, and an inner surface defining a first lumen substantially parallel to the longitudinal axis, wherein the first lumen is dimensioned to allow passage of at least a portion of the intravascular blood pump; and

    a second lumen disposed within the wall between the inner surface and the outer surface and extending from the proximal end portion to the distal end portion; and

    a hub coupled to the tubular sheath body and having a port in fluid communication with the second lumen, wherein the second lumen is sized to receive, individually, (1) the distal end of the guidewire and (2) the distal end of the stylet, andwherein when the stylet is positioned within the second lumen, the distal end of the stylet substantially occludes the second lumen and the stylet forms a liquid tight seal across the port.

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