System and method for navigating an instrument

Patent metadata

Field	Value
Publication number	US-11241286-B2
Application number	US-201816055712-A
Country	US
Kind code	B2
Filing date	Aug 6, 2018
Priority date	Aug 6, 2018
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Disclosed is an instrument assembly usable in a procedure. The instrument includes a connection for a working portion and to a tool handle. A tracking device or assembly may be associated with the instrument for determining a position of the instrument.

First claim

What is claimed is:

1. A system for determining a position of a working end of a driven instrument, comprising:
an elongated tubular member having a cannula therein;
a hub extending along a longitudinal axis and connected to the elongated tubular member; and
a tracking device connected to the hub having at least one tracking member;
wherein the hub is configured to be connected to a tool motor handle having a tool motor to drive a shaft and the tracking device has an external cross-sectional dimension transverse to the longitudinal axis of the hub less than at least an external cross-sectional dimension transverse to the longitudinal axis of a distal end of the tool motor handle;
wherein an external surface of the hub defines a plurality of rectangular-shaped wells formed into the external surface; and
wherein the tracking device includes a plurality of tracking devices, one of each of the plurality of tracking devices positioned in a corresponding one of each rectangular-shaped well formed in the hub.

2. The system of claim 1 , further comprising:
the shaft positioned and extending through the cannula; and
the working end attached to the shaft and extending from the elongated tubular member to be driven by the shaft.

3. The system of claim 2 , wherein the shaft extends through the hub.

4. The system of claim 3 , further comprising:
the tool motor handle;
wherein the elongated tubular member, the hub, the tracking device, the shaft, and the working end are configured as an assembly and attached to the tool motor handle as a single unit.

5. The system of claim 1 , wherein the hub includes a plurality of straight walls extending from the external surface to form the plurality of rectangular shaped wells in a surface of the hub.

6. The system of claim 5 , wherein each of the tracking devices includes a coil of conductive material formed around a core and carried by a printed circuit board to form a tracking coil assembly having a rectangular shape;
wherein the conductive material is connected to the printed circuit board;
wherein a rectangular shaped tracking coil assembly is received in each rectangular shaped well.

7. The system of claim 2 , wherein the working end includes a burr, a rotating cutter, a grinder, or combinations thereof.

8. The system of claim 1 , further comprising:
a connector electrically connected to the tracking device;
wherein the connector includes a memory having calibration information regarding the drive instrument.

9. The system of claim 1 , wherein each of the plurality of tracking devices includes a coil coupled to a printed circuit board and each coil and printed circuit board forms a tracking coil assembly rectangular-shaped positioned in each well.

10. A system for determining a position of a working end of a driven instrument, comprising:
an instrument assembly, including:
an elongated tubular member having a cannula therein;
a working tool having a shaft extending through the cannula and a working end attached to the shaft, wherein the working end extends from the elongated tubular member and configured to be driven by the shaft;
a hub fixedly connected to the elongated tubular member, wherein the shaft extends through the hub; and
a tracking device connected to the hub, wherein the tracking device includes at least one tracking member; and

a tracking system configured to track a position of the tracking device;
wherein the hub is configured to be connected to a tool motor to drive the shaft;
wherein the hub has an external surface that defines a rectangular-shaped well formed within the external surface; and
wherein the tracking device having the at least one tracking member includes a coil attached to a printed circuit board to form a rectangular-shaped tracking coil assembly having a surface area less than the about 20 square millimeters;
wherein the rectangular-shaped tracking coil assembly having the coil and the printed circuit board is received in the rectangular-shaped well formed in the external surface of the hub.

11. The system of claim 10 , further comprising:
the tool motor having a handle and a motor;
wherein the working tool is rotated by the motor while the tracking system tracks the tracking device.

12. The system of claim 11 , wherein an external cross-sectional dimension transverse to a longitudinal axis of the hub and tracking device is less than an external cross-sectional dimension transverse to a longitudinal axis of the handle adjacent to the hub.

13. The system of claim 10 , wherein the tracking device is adhered to the external surface of the hub.

14. The system of claim 13 , wherein the hub includes a plurality of rectangular-shaped wells forming walls extending from the external surface;
wherein the tracking device is adhered to the external surface of the hub within a well defined by the plurality of well forming walls.

15. A system to track an instrument, comprising:
a hub extending along an axis and having an exterior surface, the exterior surface defining a rectangular-shaped recessed well therein;
a tubular member connected to the hub;
an instrument shaft extending through the tubular member and the hub; and
a tracking member affixed within the rectangular-shaped recessed well within the exterior surface of a wall of the hub, the tracking member having a coil affixed to a printed circuit board to form a rectangular-shaped tracking coil assembly;
wherein the hub is configured to be fixed to a power tool handle.

16. The system of claim 15 , wherein the tracking member is configured to track a position of a working end connected to the instrument shaft while the instrument shaft rotates.

17. The system of claim 16 , wherein the tracking member affixed to the hub defines an external cross-sectional dimension transverse to the axis less than an external cross-sectional dimension transverse to a longitudinal axis of the power tool handle.

18. The system of claim 15 , further comprising:
the power tool handle, wherein the power tool handle includes a motor configured to selectively rotate the instrument shaft.

19. The system of claim 18 , wherein the power tool handle is operable to be manipulated by a single hand of a user to perform a procedure.

Assignees

• Medtronic Xomed Inc

Inventors

• Schwamb Jeffrey M
• Berman Phillip
• Mowlai-Ashtiani Ali
• Prisco John R
• Lacy Alana M

Classifications

• A61B2090/3983

  Reference marker arrangements for use with image guided surgery · CPC title

• A61B2017/00199

  with a console, e.g. a control panel with a display · CPC title

• A61B17/32002 Primary

  with continuously rotating, oscillating or reciprocating cutting instruments · CPC title

• A61B2017/2901

  Details of shaft · CPC title

• A61B17/1626

  Control means; Display units · CPC title