Surgical navigation system with magnetoresistance sensors
First Claim
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1. A surgical navigation system comprising:
- at least one magnetoresistance reference sensor coupled to a navigation interface and rigidly attachable to an anatomical reference of a patient;
at least one magnetoresistance sensor coupled to the navigation interface and attachable to at least one device; and
at least one processor coupled to the navigation interface for determining the position and orientation of the at least one device;
wherein the at least one magnetoresistance reference sensor and the at least one magnetoresistance sensor 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.
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Abstract
A surgical navigation system having one or more magnetoresistance sensors, where the sensors have the noise and dynamic range appropriate for electromagnetic position and orientation tracking. The surgical navigation system comprising at least one magnetoresistance reference sensor rigidly attached to an anatomical reference of a patient, at least one magnetoresistance sensor attached to at least one device, and at least one processor for determining the position and orientation of the at least one device.
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Citations
13 Claims
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1. A surgical navigation system comprising:
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at least one magnetoresistance reference sensor coupled to a navigation interface and rigidly attachable to an anatomical reference of a patient; at least one magnetoresistance sensor coupled to the navigation interface and attachable to at least one device; and at least one processor coupled to the navigation interface for determining the position and orientation of the at least one device; wherein the at least one magnetoresistance reference sensor and the at least one magnetoresistance sensor 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. - View Dependent Claims (2, 3, 4)
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5. A surgical navigation system comprising:
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at least one magnetoresistance reference sensor rigidly attached to an anatomical reference of a patient; at least one electromagnetic coil sensor attached to at least one device; and at least one processor for determining the position and orientation of the at least one device; wherein the magnetoresistance reference sensor comprises an insulating substrate, an alternating pattern of a metal material and a semiconductor material deposited on a surface of the insulating substate, 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. - View Dependent Claims (6, 7, 8)
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9. A surgical navigation system comprising:
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at least one electromagnetic coil sensor rigidly attached to an anatomical reference of a patient; at least one magnetoresistance sensor attached to at least one device; and at least one processor for determining the position and orientation of the at least one device; wherein the magnetoresistance sensor comprises 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. - View Dependent Claims (10, 11, 12)
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13. A surgical navigation system comprising:
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at least one magnetoresistance reference sensor attachable to an anatomical reference of a patient; at least one magnetoresistance sensor attachable to a first device; at least one optical sensor attachable to a second device; and at least one processor for determining the position and orientation of the first device and a second device; wherein the magnetoresistance reference sensor comprises 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; and wherein the magnetoresistance sensor comprises 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.
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Specification