Patent ID: 8287563

Claim:
A retrieval catheter system for retrieving an implantable device from an implantation site within a body, comprising: a core releasably attached to the implantable device, the core having a proximal end and a distal end, wherein the core is removable from the body with the implantable device positioned at the implantation side, wherein the implantable device has a proximal end and a distal end and comprises one or more anchors adapted to secure the implantable device within the body, said implantable device having a collapsible framework with a distal end and a proximal end, said framework including a plurality of wire spokes covered with a membrane requiring positive force to retract the spokes; a tubular body having a flared opening at its distal end formed as petals cut from a parent material of said tubular body, for surrounding at least a portion of the implantable device, wherein the tubular body is configured to slide relative to and over the core; an outer tubular sleeve, configured to surround the flared opening of the tubular body when the implantable device is at least partially within the flared opening; wherein axial movement of the core relative to the proximal end of the implantable device axially elongates and radially reduces the implantable device by applying an axial force to push the proximal and distal ends of the implantable device apart.