Patent ID: 8562628
Filing Date: 2013-10-22
Classification: A61B,A61F

Abstract:
1. A delivery system for deploying an occlusion device comprising: a piston assembly having a threaded proximal end, a distal end, an axial key, and being moveable between a first axial position and a second axial position; 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, the proximal end of the delivery catheter coupled to the distal end of the piston assembly; a drive mechanism comprising: an internally threaded nut member configured to receive the threaded proximal end of the piston assembly, and a spring member coupled to the internally threaded nut member, the spring member configured to rotate the nut member to drive the piston assembly from the first axial position toward the nut member to the second axial position to retract the attached delivery catheter and deploy an occlusion device from within the inner lumen and through the distal end of the delivery catheter; and a gate member comprising an axial slot, and moveable between a first gate position and a second gate position upon actuation of a deployment button coupled to the gate member, wherein an outer dimension of the distal end of the piston assembly is larger than an outer dimension of the threaded proximal end of the piston assembly such that the piston assembly is maintained in the first axial position when the gate member is in the first gate position, and wherein the drive mechanism releases stored energy as a result of actuation of the gate member from the first gate position to the second gate position and causes the piston assembly to be driven to the second axial position while the axial key of the piston assembly slides within the axial slot of the gate member.