Method and apparatus for electromagnetic navigation of a surgical probe near a metal object
First Claim
1. An electromagnetic navigation system for use in navigating a probe through an electromagnetic field positioned near a C-arm, said electromagnetic navigation system comprising:
- a transmitter coil array having a plurality of transmitter coils, said transmitter coil array operable to generate the electromagnetic field to navigate the probe; and
a shield attached to the C-arm, said shield operable to substantially shield the C-arm from the electromagnetic field generated by said transmitter coil array, wherein said shield substantially reduces distortion of the electromagnetic field by the C-arm, thereby enabling accurate navigation of the probe in the electromagnetic field.
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Accused Products
Abstract
A method and apparatus for electromagnetic navigation of a surgical probe near a metal object. The electromagnetic navigation system includes a transmitter coil array and a shield. The transmitter coil array has a plurality of transmitter coils and is operable to generate the electromagnetic field to navigate the probe. The shield is positioned adjacent the metal object and is operable to shield the metal object from the electromagnetic field generated by the transmitter coil array, such that the shield substantially reduces distortion of the electromagnetic field by the metal object.
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Citations
55 Claims
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1. An electromagnetic navigation system for use in navigating a probe through an electromagnetic field positioned near a C-arm, said electromagnetic navigation system comprising:
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a transmitter coil array having a plurality of transmitter coils, said transmitter coil array operable to generate the electromagnetic field to navigate the probe; and
a shield attached to the C-arm, said shield operable to substantially shield the C-arm from the electromagnetic field generated by said transmitter coil array, wherein said shield substantially reduces distortion of the electromagnetic field by the C-arm, thereby enabling accurate navigation of the probe in the electromagnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An electromagnetic navigation system for use in navigating a probe through an electromagnetic field during a surgical procedure, said electromagnetic navigation system comprising:
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a metal instrument used during the surgical procedure, said metal instrument formed at least in part by metallic material; and
a transmitter coil array having a plurality of transmit coils, said transmitter coil array operable to generate the electromagnetic field used to navigate the probe, said transmitter coil array integrated and incorporated directly into said metal instrument, wherein effects of metallic distortion on the electromagnetic field by said metal instrument is characterized during a calibration process to provide substantially accurate navigation of the probe during the surgical procedure. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An electromagnetic navigation system for use in navigating a probe through an electromagnetic field positioned near a first metal object and a second metal object, said electromagnetic navigation system comprising:
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a first transmitter coil array having a plurality of transmitter coils, said first transmitter coil array operable to generate a first electromagnetic field to navigate the probe;
a first shield positioned adjacent the first metal object, said first shield operable to substantially shield the first metal object from the electromagnetic field generated by said first transmitter coil array, wherein said first shield substantially reduces distortion of the electromagnetic field by the first metal object;
a second transmitter coil array having a plurality of transmitter coils, said second transmitter coil array operable to generate a second electromagnetic field to navigate the probe; and
a second shield positioned adjacent the second metal object, said second shield operable to substantially shield the second metal object from the electromagnetic field generated by said second transmitter coil array, wherein said second shield substantially reduces distortion of the electromagnetic field by the second metal object. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An electromagnetic navigation system for use in navigating a probe through an electromagnetic field positioned near a metal object, said electromagnetic navigation system comprising:
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a transmitter coil array having a plurality of transmitter coils, said transmitter coil array operable to generate the electromagnetic field to navigate the probe; and
a shield positioned adjacent the metal object, said shield operable to substantially shield the metal object from the electromagnetic field generated by said transmitter coil array, said transmitter coil array being integrally formed with said shield, wherein said shield substantially reduces distortion of the electromagnetic field by the metal object, thereby enabling accurate navigation of the probe in the electromagnetic field. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55)
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Specification