Rechargeable biomedical battery powered devices with recharging and control system therefor
First Claim
1. An implantable medical device comprisingmeans for delivering a therapy to the body of a patient,means in electrical communication with said therapy delivering means for controlling said therapy delivering means, andan electrical power supply havinga rechargeable battery in electrical communication with said therapy delivering means and said controlling means., said battery having an open circuit voltage which is a substantially linear function of a charge on said battery,means for receiving a charge for said battery from a power source external to the body of a patient, said charge receiving means being connected to said battery,means in electrical communication with said battery for detecting a battery voltage of said battery, andmeans in electrical communication with said detecting means and said charge receiving means for terminating charging whenever said voltage exceeds a predetermined level.
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Accused Products
Abstract
An improved hermetically-sealed automatic implantable cardioverter-defibrillator (AICD) or any other bioimplantable device which may be operated on a single rechargeable cell, or a dual power source system, the rechargeable component being recharged by magnetic induction. Included in the implantable devices are new lithium rechargeable chemistries designed to sense the state-of-charge or discharge of the battery; a battery charge controller specifically designed to recharge a lithium battery rapidly to less than 100% full charge, and preferably 90%, more preferably 80%, of full rated charge capacity; and charging means for multi-step charging. The batteries are based on lithium chemistries specially designed to yield higher currents than conventional primary lithium chemistries and to permit long-term performance despite sub-capacity recharging.
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Citations
49 Claims
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1. An implantable medical device comprising
means for delivering a therapy to the body of a patient, means in electrical communication with said therapy delivering means for controlling said therapy delivering means, and an electrical power supply having a rechargeable battery in electrical communication with said therapy delivering means and said controlling means., said battery having an open circuit voltage which is a substantially linear function of a charge on said battery, means for receiving a charge for said battery from a power source external to the body of a patient, said charge receiving means being connected to said battery, means in electrical communication with said battery for detecting a battery voltage of said battery, and means in electrical communication with said detecting means and said charge receiving means for terminating charging whenever said voltage exceeds a predetermined level.
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37. An implantable medical device comprising
means for delivering a therapy to the body of a patient, means in electrical communication with said therapy delivering means for controlling said therapy delivering means, and an electrical power supply having a rechargeable battery in electrical communication with said therapy delivering means and said controlling means, means for receiving a charge for said battery from a power source external to the body of a patient, said charge receiving means being connected to said battery, means in electrical communication with said battery for detecting a battery voltage of said battery, and means in electrical communication with said detecting means and said charge receiving means for terminating charging whenever said voltage exceeds a predetermined level less than 100 per cent of a rated maximum voltage of the battery.
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46. An implantable medical device comprising
means for delivering a therapy to the body of a patient, means in electrical communication with said therapy delivering means for controlling said therapy delivering means, and an electrical power supply having a rechargeable battery in electrical communication with said therapy delivering means and said controlling means, means for receiving a charge for said battery from a power source external to the body of a patient, said charge receiving means being connected to said battery, means in electrical communication with said battery for periodically detecting a battery voltage of said battery, means in electrical communication with said charge receiving means for regulating a recharging current being delivered to said battery during charging to a plurality of predetermined current levels, means in electrical communication with said voltage detecting means and said current regulating means for selecting one of said plurality of current levels as a function of said detected battery voltage, and means in electrical communication with said detecting means and said charge receiving means for terminating charging whenever said voltage exceeds a predetermined level.
Specification