Implantable medical device retrieval system, apparatus, and method

摘要

A system for retrieving an implantable medical device includes a delivery sheath that houses an inflatable balloon catheter and a retrieval device. The retrieval device includes a first support rod and a second support rod and a helix extending between distal ends of the first support rod and the second support rod. The inflatable balloon catheter is translatable into a position between the implantable medical device and a wall of a patient blood vessel. The balloon is inflated to force the device away from the wall. The helical member of the retrieval device is expanded radially be translating the second support rod distally. The helical member is moved over the balloon catheter and the medical device, where rotation of the first support rod will cause the helical member to radially compress to trap the balloon catheter and medical device therein for subsequent retrieval from the body.

主权项

1. A system for retrieving a medical device from a blood vessel, the system comprising:
a balloon catheter having a proximal end and a distal end and an inflatable balloon portion disposed at the distal end; an elongate retrieval device extending along the balloon catheter, the retrieval device comprising a first elongate support rod having proximal and distal ends, a second elongate support rod having proximal and distal ends, and a helix extending between the distal ends of the first and second support rods, wherein the helix wraps circumferentially surrounding at least a portion of the balloon catheter; wherein the elongate retrieval device has a first condition, with the distal end of the second support rod being disposed proximally from the distal end of the first support rod, and the helix extending between the distal ends has a first width; and wherein the elongate retrieval device has a second condition, with the distal end of the second support rod being disposed distally relative to the first configuration and the helix extending between the distal ends of the first and second support rods has a second width that is greater than the first width.