Time remaining to charge an implantable medical device, charger indicator, system and method therefore
First Claim
1. A system, comprising:
- an implantable medical device having a rechargeable power source, said rechargeable power source having a charge level and a charge capacity;
an external charger operatively coupled to said implantable medical device, said external charger having an external power source, said external charger charging said rechargeable power source;
electronic componentry determining an estimated time until said charge level reaches a predetermined level following commencement of a recharge session based on a plurality of measured parameters and a predetermined recharge model; and
a user output operatively coupled to said external charger and to said electronic componentry, outputting said time to a user;
wherein said predetermined recharge model is updated based on an actual time to recharge compared with said estimated time.
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Accused Products
Abstract
System and method for estimating a time to recharge a rechargeable power source of an implantable medical device. A plurality of measured parameters relating to the implantable medical device and an external charging device are applied to a model of recharging performance and an estimate is provided to a patient, perhaps in advance of charging. Once charging has begun, updated estimates can be provided until charging is complete. Once charging is complete, the model may be updated to reflect any differences in the estimated time to complete charging and the actual time required to complete charging. The model may be based on limitations to the rate at which charge may be transferred to the rechargeable power source over a plurality of intervals.
124 Citations
11 Claims
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1. A system, comprising:
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an implantable medical device having a rechargeable power source, said rechargeable power source having a charge level and a charge capacity; an external charger operatively coupled to said implantable medical device, said external charger having an external power source, said external charger charging said rechargeable power source; electronic componentry determining an estimated time until said charge level reaches a predetermined level following commencement of a recharge session based on a plurality of measured parameters and a predetermined recharge model; and a user output operatively coupled to said external charger and to said electronic componentry, outputting said time to a user; wherein said predetermined recharge model is updated based on an actual time to recharge compared with said estimated time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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an implantable medical device having a rechargeable power source, said rechargeable power source having a charge level and a charge capacity; an external charger having; an external power source operatively coupled to said implantable medical device and charging said rechargeable power source; an electronic componentry determining an estimated time until said charge level reaches a predetermined level following commencement of a charge session by determining a plurality of charging rates based on a plurality of measured parameters and a predetermined recharge model, said predetermined recharging model having a plurality of intervals, each individual one of said plurality of intervals having an individual one of a plurality of limiting factors, said plurality of charging rates being based, at least in part, on at least one of said plurality of limiting factors, wherein said charging of said rechargeable power source occurs at a lowest individual one of said plurality of charging rates; and a user output operatively coupled to said external device and to said electronic componentry, outputting said time to a user; wherein said predetermined recharge model is updated based on an actual time to recharge compared with said estimated time. - View Dependent Claims (10, 11)
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Specification