Linear motion delivery system for female sterilization device

Abstract

A delivery system for deploying an occlusion device comprises a piston having a threaded proximal end, an elongated delivery catheter having a proximal end, a distal end, and an inner lumen extending between the proximal and distal ends of the delivery catheter, and a drive mechanism comprising an internally threaded nut member and a spring member. The piston is moveable between a first axial position and a second axial position. The internally threaded nut member receives the threaded proximal end of the piston. The spring member, which is coupled to the internally threaded nut member, rotates the nut member to drive the piston from the first axial position toward the nut member to the second axial position. Driving the piston toward the nut member retracts the attached delivery catheter and deploys an occlusion device from within the inner lumen and through the distal end of the delivery catheter.

1 .- 20 . (canceled) 
     
     
         21 . An occlusion system comprising:
 an elongated delivery member;   a self-expanding occlusion device coupled with the elongated delivery member;   an internally threaded member;   a piston assembly;   a drive mechanism coupled with the piston assembly; and   a deployment button;   wherein actuation of the deployment button causes the drive mechanism to linearly draw the piston assembly proximally through the internally threaded member such that the elongated delivery member is linearly withdrawn from the self-expanding occlusion device allowing the self-expanding occlusion device to self-expand while a stationary inner stabilizer member holds the self-expanding occlusion device in place.   
     
     
         22 . The occlusion system of  claim 21 , wherein the drive mechanism is a compression spring. 
     
     
         23 . The occlusion system of  claim 22 , wherein the elongated delivery member is bonded to the piston assembly with an adhesive. 
     
     
         24 . The occlusion system of  claim 23 , further comprising a housing comprising a first and second outer shells that snap together. 
     
     
         25 . The occlusion system of  claim 24 , wherein the deployment button protrudes through the housing. 
     
     
         26 . The occlusion system of  claim 25 , wherein the self-expanding occlusion device is radially expandable. 
     
     
         27 . The occlusion system of  claim 26 , wherein the self-expanding occlusion device comprises tissue growth support fibers. 
     
     
         28 . The occlusion system of  claim 27 , further comprising a deployment indicator for confirming deployment of the occlusion device.