Inserter and method for securing an implant to a spinal process with a flexible fastening system
A surgical instrument includes a body, a securement arm, a clamp lock, and a tensioning assembly. The body defines a longitudinal axis and has proximal and distal portions. The distal portion defines a recess. The securement arm is coupled to the body and translatable along the body in a direction parallel to the longitudinal axis between first and second position. The clamp lock is pivotally coupled to the distal portion of the body. The clamp lock is pivotable between secured and unsecured configurations. The tensioning assembly translatable in a direction parallel to the longitudinal axis between proximal and distal position. The tensioning assembly configured to draw a flexible band to tension the flexible band about a bony element.
1 . A surgical instrument, comprising:
a body defining a longitudinal axis;
a tensioning assembly configured to engage a flexible implant;
a first actuator rotatable about a rotation axis offset from the longitudinal axis, the rotatable actuator configured to move the tensioning assembly to tension the flexible implant;
a second actuator that, when pressed toward the surgical instrument, is configured to release tension on the flexible implant,
wherein the rotation axis extends parallel to the longitudinal axis.
2 . The surgical instrument of claim 1 , wherein the tensioning assembly includes a pair of opposing clamping members configured to releasably hold the flexible implant.
3 . The surgical instrument of claim 2 , wherein the pair of opposing clamping members include textured surfaces positioned within a band passage configured to improve a grasp of the flexible implant.
4 . The surgical instrument of claim 3 , wherein the pair of opposing clamping members are configured to transition between a secured configuration and an unsecured configuration for securing the flexible implant and releasing the flexible implant, respectively.
5 . The surgical instrument of claim 1 , wherein the first actuator is proximal to the tensioning assembly.
6 . The surgical instrument of claim 1 , wherein the first actuator is coupled to an extension projecting from the body.
7 . The surgical instrument of claim 6 , wherein the extension is a securement element coupled to a distal end of the rotatable actuator and configured to support the rotatable actuator.
8 . The surgical instrument of claim 1 , wherein the tensioning assembly is translatable along a direction parallel to the rotation axis.
9 . A method of performing surgery, comprising:
positioning a distal portion of a surgical instrument in engagement with a first implant, the surgical instrument defining a longitudinal axis;
engaging at least a portion of a flexible implant with a tensioning assembly of the surgical instrument; and
rotating a first actuator about a rotation axis offset from the longitudinal axis to move the tensioning assembly to tension the flexible implant;
a second actuator that, when pressed toward the surgical instrument, is configured to release tension on the flexible implant,
wherein the rotation axis extends parallel to the longitudinal axis.
10 . The method of claim 9 , further comprising implanting the first implant within a patient before the step of positioning the surgical instrument in engagement with the first implant.
11 . The method of claim 9 , further comprising securing the portion of the flexible implant with an opposing pair of clamping members of the surgical instrument.
12 . The method of claim 9 , further comprising securing the portion of the flexible implant within a band lock of the surgical instrument.
13 . The method of claim 12 , wherein securing the portion of the flexible implant within the band lock includes passing ends of the flexible implant through a band passage defined by the band lock.
14 . The method of claim 12 , wherein securing the portion of the flexible implant within the band lock of the surgical instrument includes clamping the flexible implant between textured surfaces of opposing clamp members included on the band lock.
15 . The method of claim 12 , wherein securing the portion of the flexible implant within the band lock includes transitioning the band lock to a locked configuration to fix the flexible band relative to the band lock.
16 . The method of claim 9 , further comprising passing ends of the flexible implant through the first implant.
17 . The method of claim 9 , further comprising securing the first implant to the flexible implant.
18 . The method of claim 17 , further comprising trimming the flexible implant to a length adjacent the first implant after securing the flexible implant to the first implant.