Patent ID: 11857738
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. A method of using a coronary sinus catheter to map electrical activity of a heart, the coronary sinus catheter comprising a distal section comprising a memory shape portion, and a distal tip, distal of the memory shape portion; a handle, disposed proximal of a proximal section comprising: a body; a distal tip deflection actuator; a memory shape portion deployment actuator; a cover tube disposed over a portion of the memory shape portion, and a center axis; wherein the distal section comprises a flexibility greater than a proximal stiffness, a medial stiffness, and a stiffness of the memory shape portion; the method comprising the steps of:
delivering, to a coronary sinus of a patient, the coronary sinus catheter in a delivery configuration so that the distal section of the coronary sinus catheter is approximately in line with the center axis;
deflecting the distal tip out of alignment with the center axis to steer the coronary sinus catheter by actuating the distal tip deflection actuator; and
deploying the memory shape portion of the distal section of the coronary sinus catheter in the coronary sinus to prevent movement of the memory shape portion, comprising the steps of:
withdrawing the cover tube from the memory shape portion; and
returning the memory shape portion to a preformed shape.