Patent ID: 9724223
Date: 2017-08-08
CPC Classifications: A61F

Claim:
1. A system for delivering a stent from a catheter sheath in a longitudinal direction comprising: a thumbwheel mounted on an axle, the axle being supported by opposite walls of a housing; a first pinion mounted on the axle; a second pinion mounted on the axle, whereby rotation of the thumbwheel causes rotation of the first pinion and rotation of the second pinion; a first rack, enageable with the first pinion at a first surface of the first pinion, the first rack being operably connected with a stent-engaging member; a second rack, engageable with the second pinion at a second surface of the second pinion, the second surface being disposed in a direction diametrically opposite the first surface, the second rack being operably connected with a sheath configured to confine the stent; wherein the axle is mounted in an elongated slot in each of the opposite walls of the housing, each slot having an elongate direction that extends between the first surface and the second surface, and wherein the first rack and the second rack are spaced to allow the first pinion to be engaged with the first rack while the second pinion is disengaged from the second rack, and separately, to allow the second pinion to be engaged with the second rack while the first pinion is disengaged from the first rack; a biasing element configured to bias the axle to a first end of the elongated slot of each sidewall, such that the second pinion is engaged with the second rack; a trigger coupled to the axel by rods and configured to be operable by a user to urge the axle, against the bias of the biasing element, to a second end of the elongated slot of each sidewall opposite the first end, such that the first pinion is engaged with the first rack.