MOTION AND ORIENTATION SENSING MODULE OR DEVICE FOR POSITIONING OF IMPLANTS

• US 20140135744A1
• Filed: 11/09/2012
• Published: 05/15/2014
• Est. Priority Date: 11/09/2012
• Status: Abandoned Application

• Current Assignee: OrthoSensor, Inc (Stryker Corporation)
• Original Assignee: OrthoSensor, Inc (Stryker Corporation)
• Inventors: Stein, Marc, Vaughn, Glen
• Application Number:
  US13/673,921
• Publication Number:
  US 20140135744A1
• Time in Patent Office: Days
• US Class Current: 606/1
• CPC Class Codes: A61B 17/00 Surgical instruments, devices or methods, e.g. tourniquets A61B18/00 takes precedence; contraceptive devices, pessaries, or applicators therefor A61F6/00; eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2034/2048 using an accelerometer or inertia sensor
• CPC Class Codes: A61B 2560/063 Devices specially adapted for delivering implantable medical measuring apparatus
• 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 34/25 User interfaces for surgical systems
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: A61B 5/064 using markers A61B5/062 takes precedence
• CPC Class Codes: A61B 5/066 Superposing sensor position on an image of the patient, e.g. obtained by ultrasound or x-ray imaging
• CPC Class Codes: A61B 5/067 using accelerometers or gyroscopes
• CPC Class Codes: A61F 2/4611 of spinal prostheses

Abstract

At least one embodiment is directed to a tracking system for the muscular-skeletal system. The tracking system can identify position and orientation. The tracking system can be attached to a device or integrated into a device. In one embodiment, the tracking system couples to a handheld tool. The handheld tool with the tracking system and one or more sensors can be used to generate tracking data of the tool location and trajectory while measuring parameters of the muscular-skeletal system at an identified location. The tracking system can be used in conjunction with a second tool to guide the second tool to the identified location of the first tool. The tracking system can guide the second tool along the same trajectory as the first tool. For example, the second tool can be used to install a prosthetic component at a predetermined location and a predetermined orientation. The tracking system can track hand movements of a surgeon holding the handheld tool within 1 millimeter over a path less than 5 meters.

Claims

1. A surgical tracking system comprising:

a surgical device holder; and

a tracking element, where the surgical device holder is configured to hold a surgical device, where the tracking element is configured to track the position of the surgical device holder, where the surgical device holder and the tracking element are operatively connected, where the surgical device holder is configured to be grasped and carried by a user, and where the tracking element is configured to produce tracking data that can be used by a processor to provide a position accuracy of a portion of the surgical device holder to within 1 mm over a path length of less than 5 m.

2. The surgical tracking system according to claim 1, where the tracking data can be used by a processor to provide orientation of the portion of the surgical device holder to within 1 degree.

3. The surgical tracking system according to claim 1, where the tracking data can be used by a processor to provide a reposition accuracy of the portion of the surgical device holder to within of at least 1.0 mm over a path length of less than 5 m from an initial position.

4. The surgical tracking system according to claim 3, where the tracking data can be used by a processor to provide an orientation accuracy of the portion of the surgical device holder to within of at least 1 degree over a path length of less than 5 m from an initial orientation.

5. The surgical tracking system according to claim 2, where the tracking element includes an accelerometer.

6. The surgical tracking system according to claim 2, where the tracking element includes an INS chip.

7. The surgical tracking system according to claim 2, where the tracking element includes an acoustical transducer.

8. The surgical tracking system according to claim 3, where the portion of the surgical device holder is a portion that is configured to be connected to the surgical device.

9. The surgical tracking system according to claim 8, where the surgical device is a knee replacement part.

10. The surgical tracking system according to claim 4, further comprising

an exterior tracking system, where the exterior tracking system provides a second set of tracking data that a processor can use to calculate the position and orientation of the surgical device holder.

11. A surgical tracking display system comprising:

a computer display, and

a processor, where the processor is configured to receive tracking data from a surgical tracking system, where the processor is configured to determine the position of the surgical tracking system from the data, and where the computer display is configured to illustrate the position of the surgical tracking system in relation to a portion of a patient.

12. The surgical tracking display system according to claim 11, where the computer display is further configured to display an initial position and orientation of the surgical tracking system in relation to the portion of the patient.

13. The surgical tracking display system according to claim 12, where the computer display is further configured to illustrate the near real time position of the surgical tracking system in relation to the initial position and orientation of the surgical tracking system.

14. The surgical tracking display system according to claim 13, where the computer display is further configured to display information aiding a user of the surgical tracking system to orient and position the surgical tracking system to the initial position and orientation of the surgical tracking system.

15. The surgical tracking display system according to claim 14, where the processor is further configured to provide feedback data to the surgical tracking system to aid a user in orienting the surgical tracking system to the initial position and orientation of the surgical tracking system.

16. The surgical tracking display system according to claim 15, where the processor is further configured to receive a second set of tracking data, where the processor is configured to combine the tracking data and the second set of tracking data to calculate the position and orientation of the surgical tracking system.

17. A method of tracking a surgical instrument comprising:

inserting a surgical device into a surgical tracking system;

activating the surgical tracking system;

moving the surgical tracking system to an initial position and orientation and sending a signal to the surgical tracking system to save data representative of the initial position and orientation;

replacing the surgical device with a second surgical device;

moving the second surgical device to the initial position within 1 mm positional accuracy; and

moving the second surgical device to the initial orientation within 1 degree accuracy.

18. The method according to claim 17, where the moving the second surgical device to the initial position within 1 mm positional accuracy is in response to haptic feedback from the surgical tracking system.

19. The method according to claim 18, where the moving the second surgical device to the initial orientation within 1 degree accuracy is in response to haptic feedback from the surgical tracking system.

20. The method according to claim 17, where a user moves the second surgical device in response to visual feedback on a computer display.