Means and method for treating an intimal dissection after stent implantation
AssigneeCordis Corporation
InventorsRobert E. Fischell, David R. Fischell
Life of this patent
Estimating the term…
Abstract
The present invention is a “rescue” catheter that is designed to be placed over a fixed wire stent delivery catheter after angiography reveals that an intimal dissection has occurred typically as an edge dissection either just proximal or just distal to the stent.
Claims9
A rescue catheter designed for placement over a fixed guide wire stent delivery catheter after an intimal dissection has been detected following the placement of a stent into an artery of a human body, the rescue catheter comprising:
- a distal portion that is a flexible, thin-walled cone having a length of less than 10 centimeters, the cone having a proximal end that is fixedly attached to the distal end of a cylindrical shaft that is at least 1 meter long, the cylindrical shaft having a longitudinal slit extending from its proximal end.
A rescue catheter designed for placement over a fixed guide wire stent delivery catheter, comprising:
- the rescue catheter being a flexible, thin-walled cylindrical shaft that is at least 1 meter long, the cylindrical shaft having an opening at its distal end and also having a longitudinal slit extending from its proximal end for most of the length of the cylindrical shaft.
A method for facilitating the repair of an intimal dissection resulting from the placement of a stent that has been delivered from a fixed guide wire stent delivery catheter, the method including the following steps:
- a) advancing a fixed guide wire stent delivery catheter into a stenosed artery of a human subject;
- b) inflating a balloon placed at a distal portion of the fixed guide wire stent delivery catheter so as to deliver a stent mounted onto the balloon into a stenosis of the stenosed artery;
- c) deflating the balloon;
- d) injecting contrast medium through the treated stenosis and if an intimal dissection is observed, retaining the fixed guide wire stent delivery catheter with the distal end of the fixed guide wire extending distally beyond the site of the intimal dissection;
- e) advancing a rescue catheter having a distal end over the fixed guide wire stent delivery catheter until the rescue catheter's distal end lies distal to the observed intimal dissection;
- f) removing the fixed guide wire stent delivery catheter from the rescue catheter;
- g) placing a conventional guide wire through the rescue catheter until its distal end extends beyond the site of the intimal dissection;
- and
- h) removing the rescue catheter.
Dependencies are inferred from the claim text.