Trial inserter and trial head
AssigneeGlobus Medical, Inc.
InventorDamien Kahmer
Life of this patent
Estimating the term…
Abstract
Embodiments are directed to spinal treatments and, more particularly, to a trial inserter tool compatible with detachable trial heads for use in spinal surgery. In a preferred embodiment, the present invention provides a system for sizing an implant to be used in posterior lumbar interbody fusion surgery. The system may comprise a trial inserter tool, wherein the trial inserter tool comprises: a body, wherein the body is an elongated tubular, wherein the body comprises a first end and a second end; an actuation device, wherein the actuation device is disposed on the body between the first end and the second end; and a hooked support member that extends from the second end of the body; and a trial head disposable on the hooked support member.
Claims15
A trial inserter tool releasably attachable to a plurality of differently sized trial heads each having a longitudinal recess and a lateral recess laterally positioned relative to the longitudinal recess, comprising:
- an elongate body defining a central longitudinal axis;
- an actuator;
- a plunger longitudinally disposed in the body and adapted to be longitudinally translated by the actuator between a retracted position and an extended position so as to releasably insert the plunger into the longitudinal recess of the trial head, the plunger being radially offset from the central longitudinal axis;
- an extension radially offset from the central longitudinal axis and extending distally of the body, the extension and the plunger being disposed on opposite sides of the central longitudinal axis;
- and
- a lateral protrusion extending laterally from the extension and disposed distally of the plunger, and configured to be inserted into the lateral recess of the trial head, the lateral protrusion radially overlapping with the plunger.
A trial inserter tool, comprising:
- a body, wherein the body is elongated, wherein the body comprises a proximal end and a distal end;
- an actuator, wherein the actuator is disposed on the body between the proximal end and the distal end;
- a plunger, wherein the plunger is disposed within the body;
- and
- a hooked support member, wherein the hooked support member is disposed at the distal end, wherein the hooked support member is operable to support a trial head on the trial inserter tool, wherein the actuator is coupled to the plunger such that the actuator and the plunger translate together, wherein translation of the actuator and the plunger is limited by length of a hole disposed in the body, wherein the actuator comprises a sleeve and a button, wherein the button is disposed on the sleeve, wherein the sleeve is disposed around the body of the trial inserter tool.
A trial inserter tool releasably attachable to a plurality of differently sized trial heads each having a longitudinal recess and a lateral recess laterally positioned relative to the longitudinal recess, comprising:
- an elongate body;
- an actuator;
- a plunger longitudinally disposed in the body and adapted to be longitudinally translated by the actuator between a retracted position and an extended position so as to releasably insert the plunger into the longitudinal recess of the trial head;
- and
- a lateral protrusion disposed distally and laterally of the plunger, and configured to be inserted into the lateral recess of the trial head;
- wherein the actuator is coupled to the plunger such that the actuator and the plunger translate together, wherein translation of the actuation device and the plunger is limited by length of a hole disposed in the body, wherein the actuator includes a sleeve and a button, wherein the button is disposed on the sleeve, wherein the sleeve is disposed around the body of the trial inserter tool.
Dependencies are inferred from the claim text.