Patent ID: 9649123
Date: 2017-05-16
CPC Classifications: A61B

Claim:
1. A device for treatments of endoscopic resection/removal of tissues, comprising: a handpiece able to be handled by a user and having a longitudinal axis, the handpiece having a distal end and a proximal end; a guide member comprising a body housing a battery-powered electric motor and a battery connected to power said electric motor, the body being removably housed within the handpiece by insertion into, and removal from, the proximal end of the handpiece; an outer tubular element removably coupled to the distal end of the handpiece and extending along the longitudinal axis of the handpiece, the outer tubular element having a proximal end, a distal end, and a cutting aperture located at said distal end of the outer tubular element; an inner tubular element housed in, and rotatable with respect to said outer tubular element, said inner tubular element extending along the longitudinal axis of the handpiece and including a proximal end, a distal end, and a cutting tip at said distal end of the inner tubular element, the cutting tip facing the cutting aperture; the electric motor being configured to cause said inner tubular element to at least one of rotate and oscillate with respect to said outer tubular element, the electric motor having an outlet shaft extending from the distal end of the handpiece, wherein the electric motor provides rotary action of the inner tubular element to produce, by abrasion, removal or finishing of tissue to thereby effect resection; a first engagement mounted on the inner tubular element substantially at the proximal end of the inner tubular element; a locking element that maintains the first engagement and the inner tubular element in a fixed longitudinal position with respect to the handpiece, the locking element directly circumferentially surrounding the first engagement and being mounted such that an outer surface of the locking element is conterminous with an inner surface of an inner diameter of the handpiece; a second engagement mounted directly on an outermost location of a distal end of the outlet shaft of the electric motor and directly circumferentially surrounding an outer surface of said outlet shaft to longitudinally slide on the outlet shaft of the electric motor; said second engagement shaped to couple directly with said first engagement, and to drag, in a rotary way, said inner tubular element; and at least one spring element that directly contacts and pushes said second engagement into direct engagement with said first engagement by causing said second engagement to slide directly on said outer surface of said outlet shaft, to thereby couple the outlet shaft of the electric motor with the inner tubular element to have the electric motor at least one of rotate and oscillate the inner tubular element with respect to the outer tubular element.