Surgical navigation enabled imaging table environment

• US 8,483,800 B2
• Filed: 11/29/2008
• Issued: 07/09/2013
• Est. Priority Date: 11/29/2008
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: General Electric Company
• Inventors: Jensen, Vernon Thomas, Huber, William H.
• Primary Examiner(s): Caputo, Lisa
• Assistant Examiner(s): DUNLAP, JONATHAN M
• Application Number:
  US12/325,197
• Publication Number:
  US 20100138183A1
• Time in Patent Office: 1,683 Days
• Field of Search: 600424-427, 737/79, 324/226, 324/252, 702/150, 9424-427
• US Class Current: 600/424
• CPC Class Codes: A61B 2017/00915 for radioactive radiation
• CPC Class Codes: A61B 2017/0092 for X-rays
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61G 13/10 Parts, details or accessories surgical drape sheets A61B46/00
• CPC Class Codes: A61G 2210/50 for radiography
• CPC Class Codes: G01B 7/003 for measuring position, not involving coordinate determination coordinate measuring G01B7/004
• CPC Class Codes: G01B 7/30 for measuring angles or tapers; for testing the alignment of axes
• CPC Class Codes: G01R 33/091 Constructional adaptation of the sensor to specific applications
• CPC Class Codes: G01R 33/095 extraordinary magnetoresistance sensors

Abstract

A system for integrating radiolucent tracking sensors in a medical table, table mat, or surgical drape of a surgical navigation system, allowing the surgical navigation system to be less obtrusive in a surgery environment. A plurality of radiolucent magnetoresistance sensors are integrated into a table, table mat, or surgical draping of a surgical navigation system for improving surgical navigation workflow and eliminating image artifacts from intraoperative images. The plurality of radiolucent magnetoresistance sensors may be located within a table or adjacent to a table surface.

Claims

1. A surgical navigation system comprising:

at least one magnetoresistance sensor attachable to at least one device;

a plurality of magnetoresistance sensors integrated within a table or adjacent to a surface of the table; and

at least one processor for determining the position and orientation of the at least one device;

wherein the at least one magnetoresistance sensor attachable to the at least one device and the plurality of magnetoresistance sensors integrated within the table each comprising;

an insulating substrate;

an alternating pattern of a metal material and a semiconductor material deposited on a surface of the insulating substrate; and

a bias magnet material deposited on a surface of the alternating pattern of the metal material and the semiconductor material; and

wherein the alternating pattern of the metal material and the semiconductor material is between the insulating substrate and the bias magnet material.

2. The surgical navigation system of claim 1, wherein the plurality of magnetoresistance sensors are integrated within a table.

3. The surgical navigation system of claim 2, wherein the table is radiolucent.

4. The surgical navigation system of claim 1, wherein the plurality of magnetoresistance sensors are integrated within a table mat positioned adjacent to the surface of the table.

5. The surgical navigation system of claim 4, wherein the table mat is radiolucent.

6. The surgical navigation system of claim 1, wherein the plurality of magnetoresistance sensors are integrated within a surgical drape positioned over a patient.

7. The surgical navigation system of claim 6, wherein the surgical drape is radiolucent.

8. The medical table of claim 1, wherein each of the plurality of the magnetoresistance sensors have an active area of 0.1 mm by 0.1 mm.

9. A surgical navigation system comprising:

at least one magnetoresistance sensor attachable to at least one device;

a magnetoresistance reference sensor rigidly attachable to an anatomical reference of a patient;

a plurality of magnetoresistance sensors integrated within a table or located adjacent to a surface of the table; and

at least one processor for determining the position and orientation of the at least one device;

wherein the at least one magnetoresistance sensor attachable to the at least one device and the plurality of magnetoresistance sensors integrated within the surgical navigation table each comprising;

an insulating substrate;

an alternating pattern of a metal material and a semiconductor material deposited on a surface of the insulating substrate; and

a bias magnet material deposited on a surface of the alternating pattern of the metal material and the semiconductor material; and

wherein the alternating pattern of the metal material and the semiconductor material is between the insulating substrate and the bias magnet material.

10. The surgical navigation system of claim 9, wherein the plurality of magnetoresistance sensors are integrated within a table mat positioned adjacent to the surface of the table.

11. The surgical navigation system of claim 10, wherein the table mat is radiolucent.

12. The surgical navigation system of claim 9, wherein the plurality of magnetoresistance sensors are integrated within a surgical drape positioned over a patient.

13. The surgical navigation system of claim 12, wherein the surgical drape is radiolucent.

14. The surgical navigation system of claim 9, wherein the table is radiolucent.

15. A medical table with embedded tracking technology for use in a surgical navigation system, the medical table comprising:

a plurality of magnetoresistance sensors integrated within the medical table;

wherein each of the plurality of magnetoresistance sensors comprising;

an insulating substrate;

an alternating pattern of a metal material and a semiconductor material deposited on a surface of the insulating substrate; and

a bias magnet material deposited on a surface of the alternating pattern of the metal material and the semiconductor material; and

wherein the alternating pattern of the metal material and the semiconductor material is between the insulating substrate and the bias magnet material.