SUTURE RETENTION DEVICE

摘要

A control mechanism (30) for a catheter (20) with a distal anchor (26). Suture threads (25) extend from the anchor to the control mechanism. A first body (31) contains a reel (53) with a radial port (70) through which the suture threads extend to be received in a termination structure (71) on a second, partially concentric and axially coextensive body (32) of the control mechanism. Rotation of the second body wraps and unwraps the sutures about the reel thereby to remove or introduce slack into the suture threads after the anchor device forms. Removing slack in the suture threads prevents complete straightening of the anchor device and therefore inadvertent removal of the catheter from the patient.