Apparatus and method for nerve ablation in the wall of the gastointestinal tract
AssigneeDigma Medical Ltd.
InventorsYonatan Shamay, Boaz Behar, Ilan Ben Oren
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Abstract
Catheter for real-time evaluation of duodenal ablation, the catheter including an expandable member configured to stretch the duodenal wall and to generate a fixed distance between a center of the catheter and the duodenal wall; a laser transmitting element coupled with the catheter body and configured to transmit a first laser beam and a second laser beam; wherein the first laser beam is configured to cause ablative damage in a region of the duodenal wall as a result of its impingement thereon, and wherein the second laser beam is configured to detect modifications in the region of the duodenal wall resulting from the impingement of the first laser beam thereon.
Claims19
A device for real-time evaluation of duodenal ablation, the device comprising:
- a catheter comprising an expandable member configured to stretch a duodenal wall and to generate a fixed distance between a center of the catheter and the duodenal wall;
- a laser transmitting element configured to couple to the catheter and to transmit a first laser beam and a second laser beam;
- wherein the first laser beam has a first wavelength and a first spot diameter and is configured to cause ablative damage in a region of the duodenal wall as a result of its impingement thereon, and wherein the second laser beam has a second wavelength and a second spot diameter and is configured to detect modifications in the region of the duodenal wall resulting from the impingement of the first laser beam thereon;
- and a rotatable deflective optical element functionally coupled with a laser emitting element and configured to direct the first and/or second laser beam to a region on and/or beneath the duodenal wall;
- wherein the first and second laser beams are transmitted towards different target areas of the duodenal wall such that during rotation of the deflective optical element, the second laser beam impinges on a given target area at a delay relative to the impingement of the first laser beam at a same given area;
- wherein the second spot diameter is larger than the first spot diameter, thereby enabling evaluation of ablative damage caused to tissue directly and indirectly affected by the first laser beam.
A method for real-time evaluation of duodenal ablation, the method comprising:
- inserting a catheter into a duodenum of a subject;
- deploying an expandable member delivered by the catheter, thereby stretching a duodenal wall and generating a fixed distance between a center of the catheter and the duodenal wall;
- transmitting a first laser beam in a direction essentially perpendicular to a longitudinal axis of the catheter, towards the duodenal wall, wherein the first laser beam has a first wavelength and a first spot diameter and is configured to cause ablative damage in a region of the duodenal wall as a result of its impingement thereon;
- transmitting a second laser beam essentially perpendicularly to the longitudinal axis of the catheter, wherein the second laser beam has a second wavelength and a second spot diameter and is configured to detect modifications in the region of the duodenal wall as a result of the impingement of the first laser beam thereon, wherein the first and second laser beams are transmitted towards different target areas of the duodenal wall such that during rotation of a deflective optical element, the second laser beam impinges on a given target area at a delay relative to the impingement of the first laser beam at a same given area;
- and evaluating an extent of impact on the region of the duodenal wall, based on the detected modifications therein, wherein the first and/or second laser beam are directed using the deflective optical element;
- wherein the second spot diameter is larger than the first spot diameter, thereby enabling evaluation of ablative damage caused to tissue directly and indirectly affected by the first laser beam.
Dependencies are inferred from the claim text.