Catheter with radiofrequency cutting tip and heated balloon
AssigneeBoston Scientific Scimed, Inc.
InventorsJohn F. Howard, Gerald Fredrickson, Kristin Regan, Gary A. Jordan
Life of this patent
Estimating the term…
Abstract
Methods for draining pseudocysts and stent delivery systems for use therein are disclosed. An illustrative system may include a catheter shaft having an inflatable balloon affixed to a distal end region thereof. A cutting electrode may be disposed at the distal end of the system and at least one heating electrode may be disposed within the inflatable balloon. A self expandable stent may be disposed about the inflatable balloon. The stent may be formed of a shape memory polymer. The inflation fluid may be heated within the balloon to facilitate expansion of the stent.
Claims20
A stent delivery catheter, comprising:
- a catheter shaft having a proximal end and a distal end;
- an inflatable balloon having an inner region and an outer surface, the inflatable balloon disposed adjacent to the distal end of the catheter shaft;
- a cutting electrode positioned at the distal end of the catheter shaft;
- and
- a self-expanding stent disposed about the catheter shaft and adjacent to the distal end, the stent having a non-expanded state and an expanded state, wherein the stent in the expanded state comprises one or both of a proximal retention feature and a distal retention feature.
A method for delivering a stent between a first body lumen and a second body lumen, the method comprising:
- advancing a stent delivery catheter to a target location within the first body lumen, the catheter comprising:
- a catheter shaft extending from a proximal end to a distal end;
- an inflatable balloon disposed along the catheter shaft proximate the distal end of the catheter shaft;
- a cutting electrode positioned at the distal end of the catheter shaft;
- and
- a stent disposed about the catheter shaft proximate the distal end of the catheter shaft, the stent having a first unexpanded configuration and a second expanded configuration;
- energizing the cutting electrode in contact with the first body lumen to create an opening from the first body lumen;
- energizing the cutting electrode in contact with the second body lumen to create an opening to the second body lumen;
- inflating the inflatable balloon within the opening from the first body lumen and the opening to the second body lumen;
- and
- deploying the stent to the second expanded configuration within the opening from the first body lumen and the opening to the second body lumen.
A method for delivering a stent between a first body lumen and a second body lumen, the method comprising:
- advancing a stent delivery catheter to a target location within the first body lumen, the catheter comprising:
- a catheter shaft having a proximal end and a distal end;
- an inflatable balloon disposed along the catheter shaft adjacent to the distal end of the catheter shaft;
- a cutting electrode positioned at the distal end of the catheter shaft;
- and
- a stent disposed about the catheter shaft, the stent having a non-expanded state and an expanded state;
- energizing the cutting electrode in contact with the first body lumen to create an opening from the first body lumen;
- energizing the cutting electrode in contact with the second body lumen, through the opening from the first body lumen, to create an opening to access the second body lumen;
- inflating the inflatable balloon within one or both of the opening from the first body lumen and the opening to the second body lumen;
- and
- transforming the stent to the expanded state across the opening from the first body lumen and through the opening to the second body lumen.
Dependencies are inferred from the claim text.