Cardiac ablation catheter and system thereof
AssigneeCathRx Ltd
InventorsMilanjot Singh Assi, Pengjin Pan, lan KimSeng Fong, Daniel Meckes
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Abstract
A pulsed field ablation catheter for use in atrial fibrillation treatment having a distal steerable variable loop with multiple electrodes coupled to the distal end of a multilumen shaft and a handle coupled to the proximal end of the multilumen shaft. A shape imparting mechanism coupled to the handle is configured to change the shape of steerable loop by manipulating a steering mechanism to steer the steerable loop to the treatment site and a rotational actuator to change the diameter of the variable loop to better interface with varying human anatomy.
Claims21
-21. (canceled)
A cardiac ablation catheter comprising:
- i. a shaft having a proximal end, a distal end, and at least one insulative lumen and at least one delivery lumen;
- ii. a first steerable loop capable of being inserted into the insulative lumen and a second steerable loop capable of being inserted into the delivery lumen and wherein the delivery lumen is adapted to mounted within the insulative lumen;
- iii. a handle coupled to the proximal end of the shaft, the handle having a steering mechanism;
- iv. a shape imparting element having a proximal end and a distal end;
- the proximal end is adapted to be coupled to the steering mechanism and the distal end of the element is adapted to be coupled to the steerable loop and wherein the shape imparting element is positioned within the insulative lumen;
- v. a plurality of electrodes positioned on the steerable loop electrically coupled to at least one electrical connector, the at least one electrical connector being configured to electrically coupled with an electrical pulsed field ablation energy source to power the plurality of electrodes for treatment;
- and
- vi. wherein the first steering loop is reduced in size from a maximum circle to a minimum circle, wherein the minimum circle is half the diameter of the maximum circle, wherein the plurality of the electrodes is positioned apart around the circumference of the circle.
A cardiac ablation catheter comprising:
- i. a shaft having a proximal end, a distal end, and at least one insulative lumen;
- ii. a first steerable loop capable of being inserted into the insulative lumen;
- iii. a handle coupled to the proximal end of the shaft, the handle having a steering mechanism;
- iv. a shape imparting element having a proximal end and a distal end;
- the proximal end is adapted to be coupled to the steering mechanism and the distal end of the element is adapted to be coupled to the steerable loop and wherein the shape imparting element is positioned within the insulative lumen;
- v. a plurality of electrodes positioned on the steerable loop electrically coupled to at least one electrical connector, the at least one electrical connector being configured to electrically coupled with an electrical pulsed field ablation energy source to power the plurality of electrodes for treatment;
- vi. wherein a plurality of electrodes positioned on the first steerable loop, the electrodes are configured to be electrically coupled with an electrical pulsed field ablation energy source to power the plurality of electrodes for treatment;
- and wherein the plurality of electrodes are spaced at predetermined intervals on the arc of the second half of the circle;
- and
- vii. wherein the first steering loop is reduced in size from a maximum circle to a minimum circle, wherein the minimum circle is half the diameter of the maximum circle, wherein the plurality of the electrodes is positioned apart around the circumference of the circle.
Dependencies are inferred from the claim text.