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Method and devices for flow occlusion during device exchanges

  • US 10,434,292 B2
  • Filed: 11/14/2014
  • Issued: 10/08/2019
  • Est. Priority Date: 06/24/2011
  • Status: Active Grant
First Claim
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1. A device for use during an intravascular procedure, the device having a valve for closing and opening fluid flow through a lumen of the device, the device comprising:

  • an elongate body having a proximal end, a distal end and a lumen extending longitudinally through at least part of the elongate body, the elongate body comprising;

    a proximal portion; and

    a flexible distal portion;

    a sealing member having an inner diameter and an outer diameter positioned in the lumen of the elongate body at the proximal portion of the elongate body;

    a piston assembly for insertion into the lumen of the elongate body at the proximal end, the piston assembly having a handle with an integral piston, the piston extending through the inner diameter of the sealing member when the valve is in a closed state and the piston retracted axially from the inner diameter of the sealing member in a proximal direction when the valve is in an open state;

    a frictional element connected to an outer diameter of the piston, wherein the frictional element is larger than an inner diameter of the lumen in a relaxed state and partially collapses into a collapsed state upon placement in the lumen, wherein the frictional element pushes against the inner diameter of the elongate body to provide friction upon axial movement of the piston within the lumen; and

    an inflatable balloon attached to the elongate body and in communication with the lumen, wherein the device allows fluid to be advanced through the lumen of the elongate body and through the inner diameter of the sealing member to inflate and deflate the inflatable balloon when the valve is in the open state.

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