Patent ID: 9629646
Date: 2017-04-25
CPC Classifications: A61B

Claim:
1. A tissue resection device, comprising: a hollow member having a proximal end, a distal end, and a longitudinal axis; a drive member situated at least partly within the hollow member; a rotary cutting member for side cutting, the rotary cutting member having an elongate body with a longitudinal axis, a proximal end, and a distal end, wherein the proximal end of the elongate body is coupled to the drive member and wherein the elongate body has an hourglass shaped section between the proximal end of the elongate body and the distal end of the elongate body along the longitudinal axis of the elongate body; the hollow member comprising an opening, formed in the distal end of the hollow member along the longitudinal axis of the hollow member, the opening of the hollow member sized and shaped to partially expose the rotary cutting member through the opening of the hollow member, the shape of the opening in the direction of the axis of the hollow member having edges that are concave shaped and are substantially similar to the hourglass shaped section of the elongate body, wherein the rotary cutting member partially protrudes from the opening of the hollow member; and a protective hood adapted to partially surround the rotary cutting member, wherein the protective hood comprises a second opening formed in a distal end of the protective hood along the longitudinal axis of the elongate body, the second opening of the protective hood being sized and shaped to partially expose the rotary cutting member through the second opening of the protective hood, wherein the shape of the second opening of the protective hood in the direction of the longitudinal axis of the elongate body has edges that are concave shaped and are substantially similar to the hourglass shaped section of the elongate body.