Patent ID: 9364253
Filing Date: 2016-06-14
CPC Classification: A61B

Claim Text:
1. A tissue cutting device comprising: an electric motor configured to be turned on and off; a first tube having an internal channel traversing lengthwise from proximal to distal ends; first and second extension members having proximal and distal ends, left and right sides, and positioned superiorly and inferiorly to one another within the internal channel of such that they traverse parallel with the length of the tube, wherein the proximal ends of the extension members are operably coupled to the electric motor that drives straight reciprocating motion of the first and second extension members in alternate proximal and distal directions with respect to each other, such that when the first extension member is pushed distally the second extension member is pulled proximally, and vice versa; an outer looped blade having a first end section operably coupled to first extension member; and a second end section operably coupled to the second extension member; and an inner looped blade, positioned proximally and adjacent to the outer looped blade, and having a first end section operably coupled to the second extension member and a second end section operably coupled to the first extension member; wherein the outer and inner looped blades are positioned distally to the distal end of the external tube, and configured to reciprocate in alternate clockwise and counter-clockwise directions and in opposite directions with respect to each other as the first and second extension members reciprocate proximally and distally, and wherein, the first and second end sections of the outer and inner looped blades have slits, and wherein the first and second extension members have tabs that are configured to be inserted into, and thus operably couple to, the slits on the outer and inner looped blades and the first extension member has a distal end section having a distally positioned tab that extends to the right or left and a proximally positioned tab that extends in the opposite direction of the distally positioned tab, and the second extension member has a distal end section having a distally positioned tab that extends to the right or left and opposite the corresponding distal tab of the first extension member, and has a proximally positioned tab that extends in the opposite direction of the distally positioned tab.