Granted Patent B2

US 12,357,192 · App. 17/686,760 · Granted Jul 15, 2025

Inventors: Daniel W. van der Weide (Madison, WI); Noah van der Weide (Madison, WI); Eric N. Rudie (Maple Grove, MN); David Miel (Minneapolis, MN); Lee G. Wilke (Eden Prairie, MN); Fred T. Lee, Jr. (Eden Prairie, MN)

Assignee: Elucent Medical, Inc.

A61B5/062A61B5/0068A61B5/06A61B5/064A61B5/066A61B5/743A61B34/20G06K7/10386A61B5/6886A61B6/4241A61B18/04A61B18/08A61B2034/2051A61B2090/061A61B90/39A61B2505/05H01Q1/2208H01Q1/2225

Abstract

Claims (32)

1. A system comprising:

a pad including an excitation coil and a plurality of witness stations;

a medical device;

a first location emitter attached to the medical device; the first location emitter configured to generate a first signal in response to a magnetic field generated by the excitation coil;

a second location emitter attached to the medical device; the second location emitter configured to generate a second signal in response to the magnetic field generated by the excitation coil;

a tag physically separate from and not physically linked to the medical device; the tag configured to generate a third signal in response to the magnetic field generated by the excitation coil; and

a processor that determines a location of the medical device based on the first signal and the second signal detected by the plurality of witness stations, and a location of the tag based on the third signal detected by the plurality of witness stations.

2. The system of claim 1 , further comprising:

a display component including a display screen;

wherein the display screen is configured to display the location of the medical device relative to the location of the tag.

3. The system of claim 2 , wherein the display screen displays a tag indicator that corresponds to the location of the tag.

4. The system of claim 3 , wherein the display screen further displays a plurality of guide rings centered on the tag indicator.

5. The system of claim 2 , wherein the display screen displays a total distance indicator which indicates the distance between the medical device and the tag.

6. The system of claim 2 , wherein the display screen displays a medical device indicator that corresponds to the location of the medical device.

7. The system of claim 6 , wherein the display screen further displays a directional indicator the provides information for moving or positioning the medical device.

8. The system of claim 7 , wherein the directional indicator comprises an image of the medical device that is distinct from the medical device indicator.

9. The system of claim 2 , wherein the display screen displays a tag-tip vector indicator that provides a representation of the two-dimensional distance, and two-dimensional location, of a device tip of the medical device to the tag.

10. The system of claim 2 , wherein the display screen displays a depth indicator that provides an indication of how high above, or below, the hand-held medical device is with respect to the tag.

11. The system of claim 2 , wherein the display screen is at least partially see through, which allows a user to view images on the display screen while still being able to look through the display screen.

12. The system of claim 2 , wherein the display screen further displays one or more guides for performing a procedure.

13. The system of claim 12 , wherein the one or more guides comprises symbols directing a user how to move the medical device to accomplish a task.

14. The system of claim 2 , further comprising an attachment component that is configured to attach to the medical device, wherein the first location emitter and the second location emitter are located within the attachment component; and wherein the display is attached to or integral with the attachment component.

15. The system of claim 1 , wherein the tag emits a sideband at a frequency defined by a number programmed into the tag.

16. The system of claim 1 , wherein the tag includes a coil antenna.

17. The system of claim 16 , wherein the coil antenna is coupled to an integrated circuit, and the coil antenna resonates at 100-200 kHz.

18. The system of claim 1 , wherein the pad is configured to be placed in proximity to a patient having the tag embedded in the patient.

19. The system of claim 1 , wherein the plurality of witness stations includes a lock-in amplifier tuned to a frequency of a sideband from the tag.

20. The system of claim 1 , wherein the processor determines an orientation of the medical device based on the first signal and the second signal detected by the plurality of witness stations.

21. The system of claim 1 , further comprising an attachment component that is configured to attach to the medical device, wherein the first location emitter and the second location emitter are located within the attachment component.

22. The system of claim 21 , wherein the attachment component comprises a sheath that slides over the medical device or a clip that clips onto the medical device.

23. The system of claim 1 , wherein the first location emitter and the second location emitter are integrated into the medical device.

24. The system of claim 1 , wherein the medical device is a robotic surgical system.

Assignments (2)

Continuity (5)

References Cited (220)