Implantable medical device depth estimation
First Claim
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1. A method comprising:
- applying a signal to a primary coil of an external charging device, wherein the signal causes the primary coil to inductively couple to a secondary coil of an implantable medical device that is implanted within tissue of a patient;
measuring a current at the primary coil;
estimating a depth of the implantable medical device within the tissue of the patient based on the measured current; and
causing a configuration of a matching network of the implantable medical device to be adjusted by a processor in the implantable medical device, based on the depth.
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Abstract
A method includes applying a signal to a primary coil of an external charging device. The signal causes the primary coil to inductively couple to a secondary coil of an implantable medical device that is implanted within tissue of a patient. The method also includes measuring a current at the primary coil. The method further includes estimating a depth of the implantable medical device within the tissue of the patient based on the measured current.
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Citations
20 Claims
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1. A method comprising:
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applying a signal to a primary coil of an external charging device, wherein the signal causes the primary coil to inductively couple to a secondary coil of an implantable medical device that is implanted within tissue of a patient; measuring a current at the primary coil; estimating a depth of the implantable medical device within the tissue of the patient based on the measured current; and causing a configuration of a matching network of the implantable medical device to be adjusted by a processor in the implantable medical device, based on the depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device comprising:
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a primary coil to inductively couple to a secondary coil of an implantable medical device; a current measurement device coupled to the primary coil that measures a current applied to the primary coil while the secondary coil is inductively coupled to the primary coil; a processor coupled to the current measurement device, the processor programmed to; estimate a depth of the implantable medical device within tissue of a patient based on the measured current; and cause settings for a matching network of the implantable medical device to be adjusted based on the depth. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An implantable medical device comprising:
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a secondary coil to inductively couple to a primary coil of a second device; a receiver to receive depth data from the second device, wherein the depth data indicates a depth of the implantable medical device within tissue of a patient; a matching network coupled to the receiver; and a processor coupled to the matching network programmed to adjust a configuration of the matching network based on the depth data.
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Specification