Portable electromagnetic navigation system
First Claim
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1. A navigation system for use in an operating theatre to navigate a procedure relative to a patient, comprising:
- a coil array having at least three separate coils of conductive material operating with a selected transmission system that is operable to at least one of transmit a first field, receive a second field, or combinations thereof that is changed by at least one of a time differential, a time duplex, a frequency duplex, or combinations thereof;
an instrument;
a first tracking device associated with the instrument and operable with the coil array to at least one of transmit the second field to the array, receive the first field from the array, or combinations thereof;
a coil array controller and navigation probe interface (CAC/NPI) system operable to control the at least three separate coils of the coil array and has a digital amplifier and a digital switch operable to switch a signal from the digital amplifier to each of the three separate coils according to the selected transmission type, and further has amplifiers, filters, and buffers to directly interface with the first tracking device;
a single container enclosure that contains the coil array controller and navigation probe interface system;
a display device configured with the single container to be included therewith;
wherein the display is operable to display a tracked position of the instrument via the first tracking device transmitting location information via a transmission system to the coil array controller;
wherein the digital switch is operable to switch a drive current from the digital amplifier to each of the at least three coils to determine a position of the first tracking device associated with the instrument;
wherein the single container is configured to be carried by a single person and has a volume of about 32 cm3 to about 9850 cm3 and a mass including contents of about 2 kg to about 10 kg.
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Abstract
A portable system can be provided that works with a surgical navigation system. The portable system can control a localizer to assist in the tracking of a tracking device. The portable system can be provided to be substantially carried by a single user form one location to another. Further, various digital control components can be provided to assist in miniaturization, robustness, and the like.
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Citations
42 Claims
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1. A navigation system for use in an operating theatre to navigate a procedure relative to a patient, comprising:
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a coil array having at least three separate coils of conductive material operating with a selected transmission system that is operable to at least one of transmit a first field, receive a second field, or combinations thereof that is changed by at least one of a time differential, a time duplex, a frequency duplex, or combinations thereof; an instrument; a first tracking device associated with the instrument and operable with the coil array to at least one of transmit the second field to the array, receive the first field from the array, or combinations thereof; a coil array controller and navigation probe interface (CAC/NPI) system operable to control the at least three separate coils of the coil array and has a digital amplifier and a digital switch operable to switch a signal from the digital amplifier to each of the three separate coils according to the selected transmission type, and further has amplifiers, filters, and buffers to directly interface with the first tracking device; a single container enclosure that contains the coil array controller and navigation probe interface system; a display device configured with the single container to be included therewith; wherein the display is operable to display a tracked position of the instrument via the first tracking device transmitting location information via a transmission system to the coil array controller; wherein the digital switch is operable to switch a drive current from the digital amplifier to each of the at least three coils to determine a position of the first tracking device associated with the instrument; wherein the single container is configured to be carried by a single person and has a volume of about 32 cm3 to about 9850 cm3 and a mass including contents of about 2 kg to about 10 kg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 39, 40)
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15. A navigation system for use in an operating theater to navigate a procedure relative to a patient comprising:
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an imaging device to obtain image data of the patient; a surgical instrument to assist in performing a surgical procedure on the patient; a tracking system including; a tracking device interconnected with the surgical instrument; a plurality of tracking arrays; and a system controller including; a tracking array controller having; a digital power source operable to digitally control an alternating current power supply to the tracking array controller, a first circuit board, a drive system included on the first circuit board and including a digital amplifier to amplify the current from the digital power source to drive each of the tracking arrays, a D/A converter on the first circuit board, and a digital MOSFET switch on the first circuit board; and a tracking device interface powered via the digital power source and having amplifiers, filters, and buffers to directly interface with the tracking device; wherein each of the plurality of tracking arrays include at least one coil operable to be driven by an amplified current from the digital amplifier to produce an electromagnetic field relative to the patient; wherein the tracking device includes an electromagnetic field sensitive element operable to sense the electromagnetic field produced by the at least one coil; wherein the digital MOSFET switch is operable to switch the current from the digital amplifier between the at least one coil of each of the plurality of the tracking arrays; and a single container enclosure that contains the system controller including the tracking array controller and the tracking device interface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A navigation system for use in an operating theater to navigate a procedure relative to a patient, comprising:
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a container operable to be carried and transported by a single user enclosing a volume of about 32 cc to about 9850 cc, wherein the container contains at least a tracking array controller having at least one digital switch and at least one digital amplifier, a navigation probe interface, and the container encloses a space to contain a tracking array; wherein the tracking array controller can power and control a plurality of coils of a tracking array using the at least one digital switch and the at least one digital amplifier, wherein the tracking array controller can control the tracking array to determine a location of a tracking device to be displayed on a display, wherein the navigation probe interface includes an input receiving interface for a tracking device, wherein the tracking array includes a plurality of tracking coils, the at least one digital amplifier includes a plurality of digital amplifiers, and the at least one digital switch includes a plurality of digital switches; wherein each of the plurality of digital amplifiers is interconnected with each of the plurality of the tracking coils through at least one of the plurality of digital switches to allow switching of a current from each of the plurality of digital amplifiers to selectively power each one of the plurality of the tracking coils. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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41. A method of navigating an instrument relative to a patient with a navigation system in an operating theater, comprising:
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transporting by a single user a single container enclosing a volume of about 32 cc to about 9850 cc, wherein the single container contains at least a tracking array controller and navigation probe interface system (TAC/NPI) having a plurality of digital switches and a plurality of digital amplifiers, and the container encloses a space to contain a tracking array; providing in the container a first circuit board to which is fixed a digital power source operable to digitally control an alternating current power supply to the TAC/NPI, a drive system including the plurality of digital amplifiers to amplify the current from the digital power source to drive a plurality of tracking arrays, a D/A converter, and the plurality of a digital switches; powering and controlling a plurality of coils of the plurality of tracking arrays using the plurality of digital switches and the plurality of digital amplifiers of the TAC/NPI; at least one of transmitting a field and receiving a field with a tracking device having a coil, wherein each of the plurality of tracking arrays are operable to at least one of transmit a field and receive a field relative to the tracking device; determining a location of a tracking device to be displayed on a display at least by executing instructions with a processor included in the container; wherein each of the plurality of digital amplifiers is interconnected with each of the plurality of the tracking arrays through at least one of the plurality of digital switches to allow switching of a current from each of the plurality of digital amplifiers to selectively power each one of the plurality of the tracking arrays; wherein the plurality of digital switches are operable to switch a drive current from one of each of the plurality of coils in one of the plurality of the tracking arrays to another of each of the plurality of coils in another of the plurality of the tracking arrays. - View Dependent Claims (42)
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Specification