Systems and methods for obtaining and using incident field transfer functions of electrical stimulation systems
First Claim
1. A method of estimating response of a medical lead to an electromagnetic field, the method comprising:
- providing a medical lead having a proximal end, a distal end, at least one electrode disposed along the distal end, at least one terminal disposed along the proximal end, and at least one conductor extending along the medical lead and electrically coupling the at least one electrode to the at least one terminal;
coupling at least one electrode or at least one terminal of the medical lead to a control/measurement system;
individually applying a test field at each of a plurality of test positions along the medical lead using at least one excitation probe, wherein each test position corresponds to a position of a one of the at least one excitation probe and each test position is a different distance from the at least one electrode or at least one terminal coupled to the control/measurement system;
for each application of the test field, determining a response to the application of the test field at the at least one electrode or at least one terminal coupled to the control/measurement system;
generating a transfer function using a combination of the responses determined for the applications of the test field; and
using the transfer function to estimate a response of the medical lead to an electromagnetic field.
1 Assignment
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Accused Products
Abstract
A method of estimating response of a medical lead to an electromagnetic field includes providing a medical lead having a proximal end, a distal end, a plurality of electrodes disposed along the distal end, a plurality of terminals disposed along the proximal end, and a plurality of conductors extending along the medical lead and electrically coupling the electrodes to the terminals; individually applying a test field at each of a plurality of test positions along the medical lead using at least one excitation probe; for each application of the test field, determining a response to the application of the test field at one or more of the electrodes or terminals; generating a transfer function using a combination of the responses determined for the applications of the test field; and using the transfer function to estimate a response of the medical lead to an electromagnetic field.
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Citations
22 Claims
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1. A method of estimating response of a medical lead to an electromagnetic field, the method comprising:
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providing a medical lead having a proximal end, a distal end, at least one electrode disposed along the distal end, at least one terminal disposed along the proximal end, and at least one conductor extending along the medical lead and electrically coupling the at least one electrode to the at least one terminal; coupling at least one electrode or at least one terminal of the medical lead to a control/measurement system; individually applying a test field at each of a plurality of test positions along the medical lead using at least one excitation probe, wherein each test position corresponds to a position of a one of the at least one excitation probe and each test position is a different distance from the at least one electrode or at least one terminal coupled to the control/measurement system; for each application of the test field, determining a response to the application of the test field at the at least one electrode or at least one terminal coupled to the control/measurement system; generating a transfer function using a combination of the responses determined for the applications of the test field; and using the transfer function to estimate a response of the medical lead to an electromagnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A non-transitory computer-readable medium having processor-executable instructions for estimating response of a lead to an electromagnetic field, the processor-executable instructions when installed onto a device enable the device to perform actions, comprising:
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individually applying a test field at each of a plurality of test positions along a medical lead using an excitation probe, wherein at least one electrode or at least one terminal of the medical lead is coupled to a control/measurement system, wherein each test position corresponds to a position of the excitation probe and each test position is a different distance from the at least one electrode or at least one terminal coupled to the control/measurement system; for each application of the test field, determining a response to the application of the test field at the at least one electrode or at least one terminal coupled to the control/measurement system; generating a transfer function using a combination of the responses determined for the applications of the test field; and using the transfer function to estimate a response of the medical lead to an electromagnetic field. - View Dependent Claims (15, 16)
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17. A system for estimating response of a medical lead to an electromagnetic field, the system comprising:
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at least one excitation probe configured and arranged for providing a test field; at least one response probe configured and arranged for receiving a signal from a lead in response to the test field; and a control/measurement system coupled to the at least one excitation probe and at least one response probe, the control/measurement system comprising a processor for executing processor-readable instructions that enable actions, including; individually applying a test field at each of a plurality of test positions along a medical lead using the excitation probe, wherein at least one electrode or at least one terminal of the medical lead is coupled to the control/measurement system, wherein each test position corresponds to a position of the excitation probe and each test position is a different distance from the at least one electrode or at least one terminal coupled to the control/measurement system; for each application of the test field, determining a response to the application of the test field at the at least one electrode or at least one terminal coupled to the control/measurement system using the at least one response probe; generating a transfer function using a combination of the responses determined for the applications of the test field; and using the transfer function to estimate a response of the medical lead to an electromagnetic field. - View Dependent Claims (18, 19, 20, 21)
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22. A method of estimating electromagnetic coupling of a first medical lead to a second medical lead, the method comprising:
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providing a first medical lead and a second medical lead, each having a proximal end, a distal end, a plurality of electrodes disposed along the distal end, a plurality of terminals disposed along the proximal end, and a plurality of conductors electrically coupling the electrodes to the terminals; coupling at least one electrode or at least one terminal of the second medical lead to a control/measurement system; individually applying a test field at each of a plurality of test positions along the first medical lead using at least one excitation probe without conductive coupling the at least one excitation probe to the first medical lead, wherein each test position corresponds to a position of a one of the at least one excitation probe and each test position is a different distance from the at least one electrode or at least one terminal coupled to the control/measurement system; for each application of the test field, determining a response to the application of the test field to the first medical lead at one or more of the electrodes or terminals of the second medical lead coupled to the control/measurement system; generating a transfer function using a combination of the responses determined for the applications of the test field; and using the transfer function to estimate electromagnetic coupling of the first medical lead to the second medical lead.
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Specification