Patent ID: 8702727

Claim:
A device for fallopian tube occlusion detection, comprising: a handle; a catheter body longitudinally fixed relative to the handle, said catheter body having a distal end and a proximal end; a rod longitudinally fixed relative to the handle; a sheath slidably disposed about the rod, including a distal portion that is slidably extendable distally from the distal end of the catheter; and a sheath retraction mechanism disposed within the handle, said sheath retraction mechanism comprising a chassis fixedly coupled to the handle; a sliding hub slidably engaged with the chassis and fixed to the sheath; a fluid filled chamber; a piston disposed within the chamber; a piston rod coupled to the piston and the sliding hub; and a spring operably engaged with the piston; wherein the sheath retraction mechanism retracts the sheath when the spring is released, and said retraction is dampened by the fluid filled chamber.