Multiple Battery configurations in an Implantable Medical Device
AssigneeCameron Health, Inc.
InventorsDavid M. Signoff, Marcus F. Julian
Life of this patent
Estimating the term…
Abstract
Implantable medical device power circuits are disclosed. Multiple batteries may be provided, along with a number of switches, enabling a plurality of battery and power circuit configurations to be defined. Configurations of the power circuit may be changed in response to changes in battery status as the batteries are used and/or near end-of-life. Configurations of the power circuit may also be performed in response to changes in device operation. Methods associated with operating such circuits and implantable medical devices are also disclosed.
Claims20
A method of operating an implantable device comprising power circuitry including at least first, second and third batteries and a plurality of switches enabling one or more of the first second and third batteries to be isolated from the other batteries, the method comprising:
- at a first time, providing power for the implantable device using each of the first, second and third batteries;
- testing the first, second and third batteries to identify whether one or more of the first, second and third batteries is at or approaching end-of-life (EOL);
- identifying one of the first, second and third batteries as being at or approaching EOL;
- and
- at a second time after the identification of a battery that is at or approaching EOL:
- manipulating the switches to isolate the battery that is at or approaching EOL;
- and
- providing power for the implantable device using the remaining batteries excluding the battery that is at or approaching EOL.
An implantable device comprising:
- power circuitry including at least first, second and third batteries and a plurality of switches enabling one or more of the first second and third batteries to be isolated from the other batteries;
- and
- operational circuitry for controlling operation of the power circuitry,
- wherein the operational circuitry is configured to operate the power circuitry using a method comprising:
- at a first time, providing power for the implantable device using each of the first, second and third batteries;
- testing the first, second and third batteries to identify whether one or more of the first, second and third batteries is at or approaching end-of-life (EOL);
- identifying one of the first, second and third batteries as being at or approaching EOL;
- and
- at a second time after the identification of a battery that is at or approaching EOL:
- manipulating the switches to isolate the battery that is at or approaching EOL;
- and
- providing power for the implantable device using the remaining batteries excluding the battery that is at or approaching EOL.
A method of supplying power in an implantable medical device (IMD) comprising:
- providing a first battery having a positive terminal and a negative terminal;
- providing a second battery having a positive terminal and a negative terminal;
- providing a plurality of switches and connections between the first and second batteries, a ground node, and a high power output and a low power output to form a power system;
- and
- manipulating control of the switches to provide power in each of the following configurations during different times of operation of the IMD:
- (a) providing the high and low power outputs from the first and second batteries connected together in parallel;
- and
- (b) providing the high power output from the first and second batteries in series, and the low power output from the second battery alone.
Dependencies are inferred from the claim text.