Controllably translatable tissue cutting devices
AssigneeHighridge Medical, LLC
InventorEugene Shoshtaev
Life of this patent
Estimating the term…
Abstract
Tissue cutters are provided, along with systems and methods of using the tissue cutters, and a corresponding trial sizer. A channel cutter and a rasp are also provided, each for use with the tissue cutter or alone. A tissue cutter can be a sweeping cutter, an expansion cutter, a pull cutter, or a push cutter. A sweeping cutter, for example, can include a cutting element having a geared body and a cutting flange; the geared body having a central aperture, and the cutting flange having a leading edge, a trailing edge, and a central opening. The tissue cutter can also include a housing for the cutting element.
Claims20
A tissue cutter, comprising:
- an elongated body having a longitudinal axis, and comprising at least one depth stop configured to abut at least one vertebral body adjacent the intervertebral disc;
- a spacing element sized and configured to substantially fill an initial discectomy channel formed by the tissue cutter;
- and,
- a cutting element comprising one or a plurality of cutting flanges, each cutting flange having at least one cutting edge for expanding the initial discectomy channel.
A tissue cutter comprising:
- an elongated body having a longitudinal axis;
- and,
- a cutting element comprising one of:
- (a) one or a plurality of cutting flanges, each cutting flange comprising at least one cutting edge, wherein the at least one cutting edge is selected from the group consisting of a distally oriented cutting edge that is transverse to the longitudinal axis, a proximally oriented cutting edge that is transverse to the longitudinal axis, and a combination thereof;
- or (b) a lateral cutting edge that is oriented parallel to the longitudinal axis.
A method of removing a disc tissue from an intervertebral disc of a subject, comprising the steps of:
- creating an initial discectomy channel having a first width;
- inserting a tissue cutter at least partially into the initial discectomy channel, the tissue cutter comprising:
- an elongated body having a longitudinal axis and comprising at least one depth stop configured to abut at least one vertebral body adjacent the intervertebral disc;
- a spacing element sized and configured to substantially fill the initial discectomy channel;
- and
- a cutting element comprising one or a plurality of cutting flanges, each cutting flange comprising at least one cutting edge;
- moving the cutting flange into contact with and through the intervertebral disc to cut contacted disc tissue;
- removing the tissue cutter from the discectomy channel;
- and,
- removing the remaining cut disc tissue from the subject to thereby expand the discectomy channel from the first width to a second width.
Dependencies are inferred from the claim text.