Neurostimulation system with default MRI-mode
First Claim
1. A neurostimulation device capable of being placed between a stimulation state and an electromagnetic interference (EMI) protection state, comprising:
- a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes;
stimulation output circuitry configured for being selectively activated during the stimulation state to output a plurality of stimulation pulses to the plurality of electrical terminals;
electromagnetic protection circuitry configured for being selectively activated during the EMI protection state to prevent at least a portion of an electrical current induced on at least one of the electrical terminals by an electromagnetic field from entering the stimulation output circuitry; and
a controller configured for automatically defaulting the neurostimulation device from the stimulation state to the EMI protection state in response to a non-user initiated event selected from the group consisting of a drop in a power supply output below a predetermined level and a termination of a system test.
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Accused Products
Abstract
A neurostimulation device capable of being placed between a stimulation state and an EMI protection state. The neurostimulation device comprises a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes, stimulation output circuitry configured for being selectively activated during the stimulation state to output a plurality of stimulation pulses to the plurality of electrical terminals, electromagnetic protection circuitry configured for being selectively activated during the EMI protection state to prevent at least a portion of the electrical current induced on at least one of the electrical terminals by an electromagnetic field entering the stimulation output circuitry, and a controller configured for automatically defaulting the neurostimulation device to the EMI protection state.
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Citations
28 Claims
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1. A neurostimulation device capable of being placed between a stimulation state and an electromagnetic interference (EMI) protection state, comprising:
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a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes; stimulation output circuitry configured for being selectively activated during the stimulation state to output a plurality of stimulation pulses to the plurality of electrical terminals; electromagnetic protection circuitry configured for being selectively activated during the EMI protection state to prevent at least a portion of an electrical current induced on at least one of the electrical terminals by an electromagnetic field from entering the stimulation output circuitry; and a controller configured for automatically defaulting the neurostimulation device from the stimulation state to the EMI protection state in response to a non-user initiated event selected from the group consisting of a drop in a power supply output below a predetermined level and a termination of a system test. - View Dependent Claims (2, 3, 6, 7, 8, 13, 14, 15, 16, 17, 18, 19, 20, 21, 26, 27, 28)
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4. A neurostimulation device capable of being placed between a stimulation state and an electromagnetic interference (EMI) protection state, comprising:
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a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes; stimulation output circuitry configured for being selectively activated during the stimulation state to output a plurality of stimulation pulses to the plurality of electrical terminals; electromagnetic protection circuitry configured for being selectively activated during the EMI protection state to prevent at least a portion of an electrical current induced on at least one of the electrical terminals by an electromagnetic field from entering the stimulation output circuitry, wherein the electromagnetic protection circuitry, when activated, is configured for preventing the at least a portion of the induced electrical current from entering the stimulation output circuitry by introducing a low impedance between the at least one of the electrical terminals and a ground reference; and a controller configured for automatically defaulting the neurostimulation device to the EMI protection state. - View Dependent Claims (9, 10, 11, 12)
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5. A neurostimulation device capable of being placed between a stimulation state and an electromagnetic interference (EMI) protection state, comprising:
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a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes; stimulation output circuitry configured for being selectively activated during the stimulation state to output a plurality of stimulation pulses to the plurality of electrical terminals; electromagnetic protection circuitry configured for being selectively activated during the EMI protection state to prevent at least a portion of an electrical current induced on at least one of the electrical terminals by an electromagnetic field from entering the stimulation output circuitry; a controller configured for automatically defaulting the neurostimulation device to the EMI protection state; and a power supply configured for providing power to the stimulation output circuitry, wherein the electromagnetic protection circuitry, when activated, is configured for preventing the at least a portion of the induced electrical current from entering the stimulation output circuitry by preventing the power from being supplied by the power supply to the stimulation output circuitry. - View Dependent Claims (22, 23, 24, 25)
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Specification