Patent ID: 9636125
Date: 2017-05-02
CPC Classifications: A61B

Claim:
1. An obstruction removal system, comprising: a catheter having a lumen in communication with a distal opening of the catheter; an obstruction removing device, comprising a self-expanding engaging element disposed in the catheter lumen and axially moveable relative to the catheter, the engaging element having a collapsed delivery configuration and an expanded deployed configuration, wherein the engaging element is configured to entangle an obstruction within a blood vessel when transitioning from the collapsed delivery configuration to the expanded deployed configuration after being advanced out the distal opening of the catheter adjacent the obstruction; and a tubular everting element having a first end secured to a distal portion of the catheter proximal of the distal opening and a second end proximal to the first end when the everting element is in a non-everted configuration surrounding the distal portion of the catheter, so that, when the everting element is in the non-everted configuration, the engaging element may be advanced out the distal opening by relative axial movement of the catheter and the self-expanding engaging element and transition from the collapsed delivery configuration to the expanded deployed configuration distally of the everting element, wherein subsequent oppositely-directed relative movement of the catheter and the self-expanding engaging element with the engaging element having an entangled obstruction thereon causes the everting element to evert distally and thereby cover the engaging element and entangled obstruction thereon.