Neurostimulator with reduced size
First Claim
1. An implantable medical device (IMD) for implantation in the body of a patient, comprising:
- a sealed housing having a total volume of less than 14.5 cc;
a power supply contained within said sealed housing for generating a power signal, said power supply comprising a charge capacity of at least about 100 milliAmpHours; and
a controller to control an operation of said power supply and to provide an electrical neurostimulation signal for stimulating neural tissue of the patient.
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Accused Products
Abstract
A method, system, and an apparatus for providing a therapy neurostimulation signal. The apparatus of the present invention includes a sealed housing being of a total volume of less than about 14.5 cc and a power supply contained within the sealed housing. The power supply includes a charge capacity of at least about 100 milliAmpHours. The apparatus also includes a controller to control an operation of the power supply and to provide an electrical neurostimulation signal for stimulating a portion of a neural tissue. The present invention also provides for implementing an interrupt-driven architecture into an implantable medical device.
146 Citations
35 Claims
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1. An implantable medical device (IMD) for implantation in the body of a patient, comprising:
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a sealed housing having a total volume of less than 14.5 cc;
a power supply contained within said sealed housing for generating a power signal, said power supply comprising a charge capacity of at least about 100 milliAmpHours; and
a controller to control an operation of said power supply and to provide an electrical neurostimulation signal for stimulating neural tissue of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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- 24. An implantable medical device (IMD) comprising a power supply for generating a power signal, and a multi-function integrated circuit for generating an electrical neurostimulation signal from said power signal, said multi-function integrated circuit comprising a boost converter to provide a current for generating said electrical neurostimulation signal and a stimulus current regulator to perform a regulation function of said current.
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30. An implantable medical device (IMD) comprising a power supply for generating a power signal, and a multi-function integrated circuit for generating an electrical neurostimulation signal, said multi-function integrated circuit comprising:
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a boost converter to provide a current for generating said electrical neurostimulation signal;
a stimulus current regulator to regulate said current;
a switching network operatively coupled to said stimulus current regulator and operating to switch said current to at least one stimulation electrode;
a supply voltage regulator for regulating a voltage of said power signal from said power supply unit;
an internal voltage reference for providing a reference voltage signal for comparison;
a telemetry transceiver for receiving and sending data from a source external to said implantable medical device; and
a reset detector to receive a reset signal and cause a reset of at least a portion of said implantable medical device. - View Dependent Claims (31, 32, 33)
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34. A method for performing a neurostimulation using an implantable medical device (IMD), comprising:
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providing a controller to perform a function relating to said neurostimulation;
providing a multi-function integrated circuit to perform a function relating to said neurostimulation;
placing said controller in a power save mode, said power save mode comprising said multi-function integrated circuit performing at least one function relating to said neurostimulation during at least a portion of a time period during said power save mode;
receiving an interrupt relating to a performing a task; and
exiting said power save operation mode to perform said task in response to said interrupt.
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35. The method of claim 35, further comprising:
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determining whether the performance of said task is substantially complete; and
entering said power save mode in response to a determination that said performance of said task is substantially complete.
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Specification