Magnetic location system with feedback adjustment of magnetic field generator
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United States of America Patent
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Mar 17, 1998
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N/A
app pub date -
Jun 7, 1995
filing date -
Jun 7, 1995
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Abstract
A system for locating objects in space, such as medical instruments within the body of a patient, based upon transmission of magnetic fields from coils in a fixed frame of reference to sensors on the object or visa-versa. The current supplied to the coils is adjusted to assure that the sensors receive fields within a preselected range of magnitudes regardless of the location of the object in space. This assures that the sensor operates within its optimum range, and permits use of compact transmitters and sensors.
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