Streamlined Treatment of Clot Removal, Angioplasty and Prevention of Restenosis Using a Single Integrated Intravascular Device

Abstract

A single integrated intravascular device including a stentriever and semi-compliant balloon housed therein. After traversing a clot, the device is deployed to a self-expanded state engaging the clot therein, whereupon the device along with the embedded clot is removed. Detecting through imaging a stenosis at an original position of the captured clot, the device is reintroduced to that location and the stentriever is deployed to a self-expanded state. Inflating the semi-compliant balloon enlarges the stentriever to a hyper-expanded state greater than the self-expanded state thereby dilating the vessel while simultaneously completely detaching/releasing the stentriever from a remaining portion of the device. Then the semi-compliant balloon is collapsed and withdrawn along with the remaining portion of the device, while the detachable/releasable portion of the stentriever in the self-expanded state remains in the vessel.

What is claimed is: 
     
         1 . A single integrated intravascular device comprising:
 a pusher member having a proximal end, an opposite distal end;   a self-expanding stentriever comprising an open scaffolding formed by multiple struts secured together; the self-expanding stentriever being transitionable upon withdraw of an externally applied mechanical force between a compressed state having a reduced diameter and a self-expanded state having an enlarged diameter; proximal and distal ends of the self-expanding stentriever being secured to the pusher member at respective proximal and distal securement points; the self-expanding stentriever being detachable or releasable from the pusher member at the respective proximal and distal securement points;   a semi-compliant balloon housed within the self-expanding stentriever and secured to the pusher member extending axially through the semi-compliant balloon; wherein the self-expanding stentriever is transitionable between the compressed state and the self-expanded state independently of expansion of the semi-compliant balloon; and   an inflation lumen defined axially in the pusher member in fluid communication with the semi-compliant balloon.   
     
     
         2 . The device according to  claim 1 , wherein the self-expanding stentriever is made of a superelastic memory material. 
     
     
         3 . The device according to  claim 1 , wherein some of the multiple struts of the self-expanding stentriever disposed proximate the respective proximal and distal securement points each include a frangible section; the self-expanding stentriever being severable at the frangible sections into a completely detachable portion free from the pusher member and remnant portions remaining secured to the pusher member at the proximal and distal securement points. 
     
     
         4 . The device according to  claim 1 , wherein the proximal and distal ends of the self-expanding stentriever are releasably securable to the pusher member via respective proximal and distal sleeves. 
     
     
         5 . A single integrated intravascular device comprising:
 a pusher member having a proximal end, an opposite distal end;   a self-expanding stentriever comprising an open scaffolding formed by multiple struts secured together; the self-expanding stentriever being transitionable upon withdraw of an externally applied mechanical force between a compressed state having a reduced diameter and a self-expanded state having an enlarged diameter; proximal and distal ends of the self-expanding stentriever being secured to the pusher member at respective proximal and distal securement points; the self-expanding stentriever being detachable or releasable from the pusher member at the respective proximal and distal securement points;   a semi-compliant balloon housed within the self-expanding stentriever and secured to the pusher member extending axially through the semi-compliant balloon; wherein the self-expanding stentriever is transitionable between the compressed state and the self-expanded state while the semi-compliant balloon is in a deflated state; and   an inflation lumen defined axially in the pusher member in fluid communication with the semi-compliant balloon.   
     
     
         6 . The device according to  claim 5 , wherein the self-expanding stentriever is made of a superelastic memory material. 
     
     
         7 . The device according to  claim 5 , wherein some of the multiple struts of the self-expanding stentriever disposed proximate the respective proximal and distal securement points each include a frangible section; the self-expanding stentriever being severable at the frangible sections into a completely detachable portion free from the pusher member and remnant portions remaining secured to the pusher member at the proximal and distal securement points. 
     
     
         8 . The device according to  claim 5 , wherein the proximal and distal ends of the self-expanding stentriever are releasably securable to the pusher member via respective proximal and distal sleeves.