Screw Catch Mechanism for PFO Occluder and Method of Use

Abstract

Devices, delivery systems and delivery techniques for an occlusion device for the closure of physical anomalies, such as an atrial septal defect, a patent foramen ovale (PFO), and other septal and vascular defects are described. The devices, delivery systems and delivery techniques relate particularly to, but are not limited to, a patent foramen ovale (PFO) occluder made from a polymer tube, specifically, a petal-shaped occluder. In certain embodiments, the catch system includes a catch member with a screw catch mechanism for connecting to the occluder. A delivery system for use with the catch member includes a component for rotating the catch member relative to the occluder to engage the screw catch mechanism.

What is claimed is: 
     
         1 . A method for deploying a medical device having a first, delivery configuration and a second, deployed configuration, to an aperture in the body comprising:
 introducing a delivery system, including the medical device, the medical device having a distal side and a proximal side and a catch member, to a desired location in the body, the catch member having a first external threads and the medical device having a first internal threads;   deploying a distal side of the medical device on a distal side of the aperture;   deploying a proximal side of the medical device on a proximal side of the aperture;   rotating the catch member relative to the medical device to cause the first external threads disposed on the catch member to engage the first internal threads disposed on the medical device, whereby the medical device is held in the second configuration; and   releasing the medical device from the delivery system.