SPINAL IMPLANT SYSTEM AND METHOD

• US 20190029736A1
• Filed: 07/27/2017
• Published: 01/31/2019
• Est. Priority Date: 07/27/2017
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Wall, Daniel Paxton, Glaser, Adam
• Granted Patent: US 10,463,404 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/7032 Screws or hooks with U-shaped head or back through which longitudinal rods pass
• CPC Class Codes: A61B 17/7082 for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws driving other bone screws A61B17/8875
• CPC Class Codes: A61B 17/7091 for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 17/8877 characterised by the cross-section of the driver bit
• CPC Class Codes: A61B 17/8886 holding the screw head
• CPC Class Codes: A61B 17/8888 at its central region
• CPC Class Codes: A61B 17/8894 holding the implant into or through which the screw is to be inserted A61B17/7082, A61B17/7091 take precedence
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 2090/3762 using computed tomography systems [CT]
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 34/30 Surgical robots
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A surgical instrument comprises a first member including a drive engageable with a first mating surface of a bone fastener. A second member is rotatable relative to the first member and includes an element engageable with a second mating surface of the bone fastener. An actuator is connected with the second member and includes visual indicia of engagement of the element with the second mating surface. Systems, spinal implants and methods are disclosed.

Claims

1. A surgical instrument comprising:

a first member including a drive engageable with a first mating surface of a bone fastener;

a second member being rotatable relative to the first member and including an element engageable with a second mating surface of the bone fastener; and

an actuator connected with the second member and including visual indicia of engagement of the element with the second mating surface.

2. A surgical instrument as recited in claim 1, wherein the actuator is axially translatable relative to the first member to provide visual indicia of a non-locking configuration.

3. A surgical instrument as recited in claim 1, wherein the actuator is axially translatable relative to the first member to provide visual indicia of a locking configuration.

4. A surgical instrument as recited in claim 1, wherein the visual indicia includes a gap disposed between the actuator and the first member.

5. A surgical instrument as recited in claim 1, wherein the visual indicia includes the actuator disposed in a proximal position relative to the first member to provide visual indicia of a non-locking configuration.

6. A surgical instrument as recited in claim 1, wherein the visual indicia includes the actuator disposed in a distal position relative to the first member to provide visual indicia of a locking configuration.

7. A surgical instrument as recited in claim 1, wherein the actuator and the element are fixed with the second member in rotation and axial translation.

8. A surgical instrument as recited in claim 1, wherein the visual indicia includes position of the actuator relative to the first member.

9. A surgical instrument as recited in claim 1, wherein the first member defines a range of axial translation of the actuator relative to the first member.

10. A surgical instrument as recited in claim 1, wherein the first member defines a range of axial translation of the actuator between a proximal position relative to the first member to provide visual indicia of a non-locking configuration and a distal position relative to the first member to provide visual indicia of a locking configuration.

11. A surgical instrument as recited in claim 1, wherein the drive comprises a distal tip of the first member and the first mating surface includes a drive socket of a bone fastener shaft.

12. A surgical instrument as recited in claim 1, wherein the first member includes an outer sleeve that defines an inner cavity configured for disposal of an inner shaft of the second member.

13. A surgical instrument as recited in claim 12, wherein the actuator is rotatable and includes a knurled wheel having an inner surface engageable with the inner shaft for rotation therewith.

14. A surgical instrument as recited in claim 1, wherein the element includes a screw having an outer thread surface connectable with the second mating surface.

15. A surgical instrument comprising:

an outer tubular sleeve extending between a proximal end and a distal end including a drive engageable with a drive socket of a bone fastener shaft;

an inner shaft being rotatable relative to the sleeve and including a screw connectable with an inner threaded surface of a bone fastener receiver; and

a rotatable actuator connected with the inner shaft and including visual indicia of a non-locking configuration and a locking configuration with the inner threaded surface.

16. A spinal implant system comprising:

a surgical instrument including an outer tubular sleeve extending between a proximal end and a distal end including a drive engageable with a bone fastener shaft, and an inner shaft being rotatable relative to the sleeve and including a screw connectable with a threaded surface of a bone fastener receiver, the surgical instrument further including a rotatable actuator connected with the inner shaft and including visual indicia of a non-locking configuration and a locking configuration with the threaded surface; and

a guide member including an inner surface that defines a cavity configured for disposal of the outer sleeve and an image guide being oriented relative to a sensor to communicate a signal representative of a position of the guide member.

17. A spinal implant system as recited in claim 16, wherein the guide member includes an end effector of a robotic arm.

18. A spinal implant system as recited in claim 16, further comprising a tracking device including a sensor that receives the signal and communicates with a processor to generate data for display of an image from a monitor, the image representing position of the guide member relative to tissue.

19. A spinal implant system as recited in claim 16, wherein the drive is integrally connected with the sleeve.

20. A spinal implant system as recited in claim 16, wherein the sleeve defines a range of axial translation of the actuator between a proximal position relative to the sleeve to provide visual indicia of a non-locking configuration and a distal position relative to the sleeve to provide visual indicia of a locking configuration.