Patent ID: 11896281
Assignee: CPSI HOLDINGS LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 17:
18. A method of extracting a lead from a patient tissue volume using cryogenics, the method comprising: providing a cryo-fixation lead extraction device including a lead extraction catheter having longitudinally spaced proximal and distal catheter ends and an elongate catheter lumen, a liner having longitudinally spaced proximal and distal liner ends and an elongate liner lumen extending entirely between the proximal and distal liner ends, at least a portion of the liner being located a chosen one of circumferentially within and circumferentially surrounding the catheter lumen, at least one cryogen supply line extending longitudinally through at least a portion of the liner lumen, wherein the at least one cryogen supply line is affixed to an inner surface of the liner lumen, and a cutting feature located adjacent the distal catheter end; with the cryogen supply line, placing a cryogen fluid source, which is in operative proximity to the proximal liner end, into fluid communication with the distal liner end; placing at least part of a lead being extracted longitudinally through the liner lumen; selectively directing cryogen fluid from the cryogen fluid source through the cryogen supply line to selectively generate a patient tissue frozen zone adjacent the distal catheter end within the patient tissue volume; with the cutting feature, selectively mechanically cutting into at least a portion of the patient tissue frozen zone adjacent the lead being extracted to loosen the lead from the patient tissue; and moving the loosened lead proximally with respect to the liner lumen.