Implantable pulse generators using rechargeable zero-volt technology lithium-ion batteries
First Claim
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1. An implantable medical device, comprising:
- a rechargeable battery;
a coil for wirelessly receiving radiation from an external charger for recharging the rechargeable battery;
a rectifier coupled to the coil for producing a DC voltage;
circuitry for receiving the DC voltage and for protecting and controlling the recharging of the rechargeable battery;
wherein the rechargeable battery comprises;
a first substrate comprising titanium;
an anode on the first substrate;
a second substrate;
a cathode on the second substrate consisting of lithium-nickel-cobalt oxide; and
an electrolyte and separator layer between the anode and the cathode.
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Abstract
An implantable medical device, such as an implantable pulse generator (IPG) used with a spinal cord stimulation (SCS) system, includes a rechargeable lithium-ion battery having an anode electrode with a substrate made substantially from titanium. Such battery construction allows the rechargeable battery to be discharged down to zero volts without damage to the battery. The implantable medical device includes battery charging and protection circuitry that controls the charging of the battery so as to assure its reliable and safe operation.
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Citations
11 Claims
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1. An implantable medical device, comprising:
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a rechargeable battery; a coil for wirelessly receiving radiation from an external charger for recharging the rechargeable battery; a rectifier coupled to the coil for producing a DC voltage; circuitry for receiving the DC voltage and for protecting and controlling the recharging of the rechargeable battery; wherein the rechargeable battery comprises; a first substrate comprising titanium; an anode on the first substrate; a second substrate; a cathode on the second substrate consisting of lithium-nickel-cobalt oxide; and an electrolyte and separator layer between the anode and the cathode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification