Patent ID: 9119731
Filing Date: 2015-09-01
Classification: A61F

Abstract:
1. A surgical tool handle, which comprises: a) a fixed handle comprising a first length extending along a longitudinal axis from a fixed handle proximal end to a fixed handle distal end, wherein an axial cavity extends along the longitudinal axis in a proximal direction from the fixed handle distal end at least part way along the first length thereof; b) a second shaft comprising a second length extending along the longitudinal axis from a second shaft proximal portion received in the axial cavity to a second shaft distal portion extending out beyond the axial cavity of the distal end of the fixed handle, wherein the second shaft includes a first axial slot having a third length that is shorter than the second length with the slot not extending to a distal end of the second shaft but extending inwardly from an outer surface thereof and being in open communication with a first axial bore extending to the distal end of the second shaft, wherein at least the second shaft distal portion has a threaded exterior surface; c) a coil spring received in an annular space provided between the outer surface of the second shaft proximal portion received in the axial cavity and an inner surface of the fixed handle; d) an inner shaft extending through the first axial bore in the second shaft from an inner shaft proximal end to a threaded distal end configured to support a prosthesis, wherein the proximal end of the inner shaft supports a radial pin that is axially moveable along the slot in the second shaft such that when the radial pin biases against the coil spring, the distal threaded end of the inner shaft extends axially out beyond the distal end of the second shaft; and e) a rotatable handle comprising a third axial bore extending along the longitudinal axis from a rotatable handle proximal end to a rotatable handle distal end, wherein the rotatable handle has a threaded inner surface that threading engages with the external threads of the second shaft, f) wherein when the rotatable handle is rotated in a first direction with the rotatable threads threadingly engaging the external threads of the second shaft, the rotatable handle moves proximally along the longitudinal axis to thereby cause the inner shaft to move in a proximal direction against the bias of the coiled spring and to simultaneously move the distal threaded end of the inner shaft closer to the distal portion of the second shaft, and g) wherein when the rotatable handle is rotated in a second, opposite direction, the rotatable threads threadingly disengage from the external threads of the second shaft as the rotatable handle moves distally along the longitudinal axis to thereby lessen the bias between the radial pin and the coil spring so that the threaded distal end of the inner shaft is movable in a distal direction to increase a distance between the distal portion of the second shaft and the distal threads of the inner shaft.