Catch Member for PFO Occluder

Abstract

Delivery (and recovery) devices and techniques for delivering an implant into a desired location within the body and catch systems for such implants. The devices and techniques relate particularly to, but are not limited to, a patent foramen ovale (PFO) occluder made from a polymer tube. A catch system maintains an occluder in a deployed configuration by holding it in a reduced axial length position. Some embodiments have a compressible tip. Some embodiments have temporary catching mechanisms.

What is claimed is: 
     
         1 . A collapsible medical device for occluding an aperture in a body, the medical device having a first configuration as a reduced profile and a second configuration as an expanded profile, the medical device being adapted to be delivered through a delivery system into a desired delivery location, the medical device comprising:
 a) an occluder that is adapted to move from a reduced profile to an expanded profile, the occluder including a tube having a central portion with an inner passageway along its lontiduinal axis; a distal portion having multiple slits therethrough forming segments which, upon application of force Fd thereto to move the device from its first to second configuration, bow and twist outward to form distal loops; a proximal portion having multiple slits therethrough forming segments which, upon application of force Fp thereto to move the device from its first to second configuration, bow and twist outward to form proximal loops, wherein the loops are rotated in an orthogonal plane relative to the axis of the tube; and   b) a catch system including a catch member with an axially deformable section insertable into the inner passageway of the occluder to join such distal portion to the proximal portion of the occluder.   
     
     
         2 . The medical device according to  claim 1 , wherein the device is bioresorbable.