Method and apparatus for rate responsive adjustments in an implantable medical device
First Claim
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1. A method for performing rate responsive control in an implantable medical device, comprising:
- acquiring an internal sensor data using an internal sensor operatively coupled with said implantable medical device;
generating at least one setpoint for controlling a rate of therapy, said setpoint based upon said internal sensor data;
performing a scaling factor adjustment process for scaling said internal sensor data to correlate said internal sensor data to said setpoint; and
adjusting said rate of therapy based upon said scaling factor adjustment, wherein performing said scaling factor adjustment process further comprises;
performing a rate profile optimization (RPO) process to determine a rate profile;
generating an activities of daily living (ADL) setpoint based upon said RPO;
increasing said ADL setpoint based upon a determination that said ADL setpoint is below a lower boundary of an acceptable therapy rate;
setting an activity scaling factor to one in response to at least one of increasing said ADL setpoint and a determination that said ADL setpoint is within said lower boundary and an upper boundary of an acceptable therapy rate;
calculating a multiplier of said ADL setpoint, in response to a determination that said ADL setpoint is above said upper boundary, said multiplier being egual to a factor by which said ADL setpoint is above said upper boundary; and
adjusting said scaling factor to match said multiplier.
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Abstract
A method and an apparatus for performing rate responsive control in an implantable medical device using a scaling factor. Sensor data is acquired using a sensor operatively coupled with the implantable medical device. At least one setpoint for controlling a rate of therapy is generated, the setpoint being based upon the sensor data. A scaling factor adjustment process is performed for scaling the internal sensor data to correlate the sensor data to the setpoint. The rate of therapy is adjusted based upon the scaling factor adjustment.
130 Citations
20 Claims
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1. A method for performing rate responsive control in an implantable medical device, comprising:
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acquiring an internal sensor data using an internal sensor operatively coupled with said implantable medical device; generating at least one setpoint for controlling a rate of therapy, said setpoint based upon said internal sensor data; performing a scaling factor adjustment process for scaling said internal sensor data to correlate said internal sensor data to said setpoint; and adjusting said rate of therapy based upon said scaling factor adjustment, wherein performing said scaling factor adjustment process further comprises; performing a rate profile optimization (RPO) process to determine a rate profile; generating an activities of daily living (ADL) setpoint based upon said RPO; increasing said ADL setpoint based upon a determination that said ADL setpoint is below a lower boundary of an acceptable therapy rate; setting an activity scaling factor to one in response to at least one of increasing said ADL setpoint and a determination that said ADL setpoint is within said lower boundary and an upper boundary of an acceptable therapy rate; calculating a multiplier of said ADL setpoint, in response to a determination that said ADL setpoint is above said upper boundary, said multiplier being egual to a factor by which said ADL setpoint is above said upper boundary; and adjusting said scaling factor to match said multiplier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for performing rate responsive control in an implantable medical device, comprising:
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acquiring minute ventilation data using an internal sensor operatively coupled with said implantable medical device; generating at least one activities of daily living (ADL) setpoint for controlling a rate of therapy, said ADL setpoint based upon said minute ventilation; performing a scaling factor adjustment process for scaling said minute ventilation data to correlate said internal sensor data to said setpoint; and adjusting said rate of therapy based upon said scaling factor adjustment, wherein performing said scaling factor adjustment process further comprises; performing a rate profile optimization (RPO) process to determine a rate profile; generating an activities of daily living (ADL) setpoint based upon said RPO; increasing said ADL setpoint based upon a determination that said ADL setpoint is below a lower boundary of an acceptable therapy rate; setting an activity scaling factor to one in response to at least one of increasing said ADL setpoint and a determination that said ADL setpoint is within said lower boundary and an upper boundary of an acceptable therapy rate; calculating a multiplier of said ADL setpoint in response to a determination that said ADL set point is above said upper boundary, said multiplier being equal to a factor by which said ADL setpoint is above said upper boundary; and adjusting said scaling factor to match said multiplier.
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11. An apparatus for performing rate responsive control in an implantable medical device, comprising:
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means for acquiring an internal sensor data using an internal sensor operatively coupled with said implantable medical device; means for generating at least one setpoint for controlling a rate of therapy, said setpoint based upon said internal sensor data; means for performing a scaling factor adjustment process for scaling said internal sensor data to correlate said internal sensor data to said setpoint; and means for adjusting said rate of therapy based upon said scaling factor adjustment, wherein the means for performing said scaling factor adjustment process further comprises; performing a rate profile optimization (RPO) process to determine a rate profile; generating an activities of daily living (ADL) setpoint based upon said RPO; increasing said ADL setpoint based upon a determination that said ADL setpoint is below a lower boundary of an acceptable therapy rate; setting an activity scaling factor to one in response to at least one of increasing said ADL setpoint and a determination that said ADL setpoint is within said lower boundary and an upper boundary of an acceptable therapy rate; calculating a multiplier of said ADL setpoint, in response to a determination that said ADL setpoint is above said upper boundary, said multiplier being equal to a factor by which said ADL setpoint is above said upper boundary; and adjusting said scaling factor to match said multiplier.
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12. A computer readable medium having computer-executable instructions for performing a method, comprising:
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acquiring an internal sensor data using an internal sensor operatively coupled with said implantable medical device; generating at least one setpoint for controlling a rate of therapy, said setpoint based upon said internal sensor data; performing a scaling factor adjustment process for scaling said internal sensor data to correlate said internal sensor data to said setpoint; and adjusting said rate of therapy based upon said scaling factor adjustment, wherein performing a scaling factor adjustment process further comprises; performing a rate profile optimization (RPO) process to determine a rate profile; generating an activities of daily living (ADL) setpoint based upon said RPO; increasing said ADL setpoint based upon a determination that said ADL setpoint is below a lower boundary of an acceptable therapy rate; setting an activity scaling factor to one in response to at least one of increasing said ADL setpoint and a determination that said ADL setpoint is within said lower boundary and an upper boundary of an acceptable therapy rate; calculating a multiplier of said ADL setpoint, in response to a determination that said ADL setpoint is above said upper boundary, said multiplier being equal to a factor by which said ADL setpoint is above said upper boundary; and adjusting said scaling factor to match said multiplier. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification