Patent ID: 9186166
Filing Date: 2015-11-17
Classification: A61B

Abstract:
1. An arthroscopic tissue shaver device, comprising: a handle having a driver disposed therein and having a passageway extending between proximal and distal ends of the handle for receiving fluid therethrough; a shaft assembly having an outer shaft and an inner shaft, the inner shaft being rotatably disposed within the outer shaft, the inner and outer shafts having at least one opening formed in distal ends thereof, and the inner shaft having a tissue cutting distal tip positioned adjacent to the at least one opening in the outer shaft for cutting tissue exposed through the opening; and a coupler operably connected between the handle and the shaft assembly for transferring a drive force from the driver to the inner shaft, the coupler comprising tubular-shaped inner and outer hubs, the outer hub having a slot formed in a distal portion and having a mating feature formed on an inner surface of the outer hub for releasably mating with a proximal end of the outer shaft of the shaft assembly, the outer hub having a hollow interior and an exit port formed therein for receiving fluid from an inner lumen of the inner shaft, the inner hub having a mating feature formed on a proximal end thereof configured to releasably mate with a corresponding mating feature on the driver in the handle and having a distally extending protrusion disposed at a distal end of the inner hub for releasably mating with a proximal end of the inner shaft by positioning the proximal end of the inner shaft around the protrusion; wherein the coupler is configured to retrofit the handle to prevent fluid from flowing out of the inner lumen of the inner shaft and into the passageway in the handle.