LOW-PROFILE LOCATION PAD
First Claim
1. A magnetic position tracking system for use in performing a medical procedure on a patient who is positioned on an upper surface of a table, the system comprising:
- a location pad, which is positioned on the upper surface of the table beneath the patient, and which comprises one or more field generators, which are operative to generate respective magnetic fields and are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters; and
a position sensor, which is fixed to an invasive medical device for insertion into a body of the patient, and which is arranged to sense the magnetic fields so as to measure a position of the medical device in the body.
1 Assignment
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Accused Products
Abstract
A magnetic position tracking system for performing a medical procedure on a patient who is positioned on an upper surface of a table includes a location pad, which is positioned on the upper surface of the table beneath the patient. The location pad includes one or more field generators, which are operative to generate respective magnetic fields and are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters. A position sensor is fixed to an invasive medical device for insertion into a body of the patient, and is arranged to sense the magnetic fields so as to measure a position of the medical device in the body.
115 Citations
22 Claims
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1. A magnetic position tracking system for use in performing a medical procedure on a patient who is positioned on an upper surface of a table, the system comprising:
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a location pad, which is positioned on the upper surface of the table beneath the patient, and which comprises one or more field generators, which are operative to generate respective magnetic fields and are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters; and
a position sensor, which is fixed to an invasive medical device for insertion into a body of the patient, and which is arranged to sense the magnetic fields so as to measure a position of the medical device in the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A magnetic position tracking system for use in performing a medical procedure on a patient who is positioned on an upper surface of a table, the system comprising:
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a field generator, which is fixed to an invasive medical device for insertion into a body of the patient, and which is arranged to generate a magnetic field; and
a location pad, which is positioned on the upper surface of the table beneath the patient, and which comprises one or more position sensors, which are operative to sense the magnetic field so as to measure a position of the medical device in the body, and are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters. - View Dependent Claims (10)
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11. A location pad for use in a magnetic position tracking system, comprising:
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one or more primary field generators, which are arranged in a common plane and are oriented so as to generate respective primary magnetic fields perpendicular to the plane; and
an auxiliary field generator oriented to generate an auxiliary magnetic field having a component at locations within the plane that is parallel to the plane, wherein the primary and auxiliary field generators are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters.
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12. A method for performing a medical procedure on a patient who is positioned on an upper surface of a table, the method comprising:
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positioning on the upper surface of the table beneath the patient a location pad comprising one or more field generators operative to generate respective magnetic fields and arranged so that a thickness dimension of the location pad is no greater than 3 centimeters; and
sensing the magnetic fields by a position sensor fixed to an invasive medical device inserted into a body of the patient, so as to measure a position of the medical device in the body. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 21)
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20. A method for performing a medical procedure on a patient who is positioned on an upper surface of a table, the method comprising:
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generating a magnetic field by a field generator fixed to an invasive medical device inserted into a body of the patient; and
positioning on the upper surface of the table beneath the patient a location pad comprising one or more position sensors, which are operative to sense the magnetic field so as to measure a position of the medical device in the body and are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters.
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22. A method for position tracking, comprising:
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positioning and orienting one or more primary field generators in a common plane so as to generate respective primary magnetic fields perpendicular to the plane; and
positioning and orienting an auxiliary field generator to generate an auxiliary magnetic field having a component at locations within the plane that is parallel to the plane, wherein the primary and auxiliary field generators are arranged so that a thickness dimension of the location pad is no greater than 3 centimeters.
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Specification