Pulsed field ablation device and method

An ablation device for pulsed field ablation of a tissue by pulsed electric field, the device comprising:

• a catheter configured for insertion into a heart of a patient, the catheter having a longitudinal axis and including an expandable basket comprising filaments, the expandable basket comprising a ring at its distal end and wherein the filaments are coupled to the ring;
• a pulse generator configured to generate electric pulses;
• a set of electrodes positioned on the expandable basket, the set of electrodes electrically coupled to the pulse generator and configured to provide a pulsed electric field from the electric pulses;
• wherein the catheter includes an outer elongated shaft and an inner elongated shaft and wherein the expandable basket is coupled to the inner elongated shaft by a locking mechanism;
• wherein the locking mechanism includes a first protrusion and a second protrusion formed on the inner elongated shaft and the ring is positioned between the first protrusion and the second protrusion.

An ablation device for pulsed field ablation of a tissue by pulsed electric field, the device comprising:

• a catheter configured for insertion into a heart of a patient, the catheter having a longitudinal axis and including an expandable basket comprising filaments, the expandable basket comprising a ring at its distal end and wherein the filaments are coupled to the ring;
• a pulse generator configured to generate electric pulses;
• a set of electrodes positioned on the expandable basket, the set of electrodes electrically coupled to the pulse generator and configured to provide a pulsed electric field from the electric pulses, the pulsed electric field configured for an ablation of a tissue within a heart of a patient;
• wherein the catheter includes an outer elongated shaft and an inner elongated shaft and wherein the expandable basket is coupled to the inner elongated shaft by a locking mechanism;
• wherein the locking mechanism includes a first protrusion and a second protrusion formed on the inner elongated shaft and the ring is positioned between the first protrusion and the second protrusion.

An ablation device, the device comprising:

• a catheter configured for insertion into a heart of a patient having a longitudinal axis and including an expandable basket comprising filaments, the expandable basket comprising a ring at its distal end and wherein the filaments are coupled to the ring;
• a pulse generator configured to generate electric pulses;
• a set of electrodes positioned on the expandable basket, the set of electrodes electrically coupled to the pulse generator;
• wherein the catheter includes an outer elongated shaft and an inner elongated shaft and wherein the expandable basket is coupled to the inner elongated shaft by a locking mechanism;
• wherein the locking mechanism includes a first protrusion and a second protrusion formed on the inner elongated shaft and the ring is positioned between the first protrusion and the second protrusion.