Surgical instrument and method
A surgical instrument comprises a member connected with a spinal implant defining an axis. A first image guide is connected with the member and oriented relative to a sensor to communicate a signal representative of a position of the member. A second image guide is connected with the member and oriented to represent an angle measuring a second orientation of the axis relative to a first orientation. Systems, implants and methods are disclosed.
1. A surgical instrument comprising:
a member comprising a shaft and a longitudinal element disposed in a channel of the shaft, the shaft being connected with a spinal implant defining an implant axis, the longitudinal element being configured to translate relative to the shaft to move the implant between a first orientation in which the implant axis extends at a first angle relative to a member axis defined by the shaft and a second orientation in which the implant axis extends at a second angle relative to the member axis; and
an image guide connected with the longitudinal element and being oriented to represent an implant angle measuring the first angle relative to the second angle.
2. A surgical instrument as recited in claim 1 , further comprising a second image guide connected with the member and being oriented to communicate a signal representative of a position of the member.
3. A surgical instrument as recited in claim 1 , wherein the image guide includes indicia representing the implant angle.
4. A surgical instrument as recited in claim 1 , wherein the image guide includes a rotational gauge having indicia representing the implant angle.
5. A surgical instrument as recited in claim 1 , wherein the image guide includes indicia representing the implant angle, the indicia including a marker and graduated markings disposed with the member.
6. A surgical instrument as recited in claim 1 , wherein the first orientation includes a zero angle reference.
7. A surgical instrument as recited in claim 1 , wherein the image guide is oriented relative to a sensor to communicate a signal representative of the implant angle.
8. A surgical instrument as recited in claim 1 , wherein the member includes an actuator connected with the longitudinal element that translates an end of the member connected with the spinal implant.
9. A surgical instrument as recited in claim 8 , wherein the actuator includes a pivotable grip handle.
10. A surgical instrument as recited in claim 8 , wherein the member includes a lock engageable with the actuator to resist and/or prevent rotation of the spinal implant.
11. A surgical instrument as recited in claim 1 , wherein the image guide comprises an emitter mounted with the longitudinal element.
12. A surgical instrument as recited in claim 1 , wherein the image guide is oriented relative to a sensor to communicate a signal representative of the implant angle and the sensor communicates with a processor to generate data for display of an image from a monitor, the image representing position of the member relative to a body and the spinal implant relative to the member.
13. A surgical instrument as recited in claim 1 , further comprising a second image guide oriented to communicate a signal representative of a position of the member, the second image guide comprising a collar that is rotatable relative to the shaft about the member axis.
14. A surgical instrument as recited in claim 1 , wherein the member includes an inner shaft comprising a threaded outer surface that engages a threaded inner surface of the spinal implant.
15. A surgical instrument as recited in claim 14 , wherein an outer surface of the inner shaft engages an outer surface of the longitudinal element.
16. A surgical instrument as recited in claim 14 , wherein the member includes a handle having a knob that is rotatable relative to the shaft about the member axis, the knob being rotatable to rotate the inner shaft.
17. A surgical instrument as recited in claim 14 , wherein the implant includes a body and a pin that is rotatable relative to the body, the pin including the threaded inner surface.
18. A surgical instrument as recited in claim 1 , wherein the longitudinal element includes opposite first and second ends, the first end including the image guide, the second end directly engaging the implant.
19. A surgical instrument comprising:
a spinal implant defining an implant axis;
an outer body defining an axial channel; and
an inner shaft disposed within the axial channel and engaging the spinal implant, the inner shaft being translatable relative to the outer body to move the implant between a first orientation in which the implant axis extends at a first angle relative to a member axis defined by the outer body and a second orientation in which the implant axis extends at a second angle relative to the member axis, the inner shaft including an image guide oriented to represent an angle measuring the first angle relative to the second angle.
20. A surgical instrument comprising:
a member comprising a shaft defining an axis and a longitudinal element disposed in an axial channel of the shaft;
a spinal implant connected with the shaft and defining an implant axis, the longitudinal element being configured to translate relative to the shaft to move the implant between a first orientation in which the implant axis extends at a first angle relative to a member axis defined by the shaft and a second orientation in which the implant axis extends at a second angle relative to the member axis; and
an image guide that is fixed relative to the longitudinal element and oriented to represent an angle measuring the the first angle relative to the second angle,
wherein the member includes an actuator connected with the longitudinal element that translates an end of the member connected with the spinal implant.