Charging system incorporating independent charging and communication with multiple implanted devices
First Claim
1. A system for transferring power to, and communicating with, at least one body-implantable active device, said system comprising:
- an external power transfer system associated with an external device disposed outside of a body, operable to transfer power through a dermis layer to each body-implantable active device, and communicate data to and from each body-implantable active device; and
a power receiving system associated with each body-implantable active device, operable to receive power transferred from the external power transfer system, and communicate data to and from the external power transfer system;
the external power transfer system including;
at least one transmit coil, each corresponding to a respective body-implantable active device;
a driver circuit operable to drive the at least one transmit coil with an AC signal;
a forward telemetry circuit operable to modulate, responsive to a forward telemetry data input signal, a corresponding data signal within the AC signal; and
a back telemetry circuit operable to generate, responsive to a data signal modulated within the AC signal, a corresponding back telemetry data output signal;
each power receiving system respectively including;
a receive coil tuned to the resonant frequency of the corresponding transmit coil;
a charge receiving circuit coupled to the receive coil, said charge receiving circuit operable in a first mode to receive power transferred from the corresponding transmit coil to the receive coil when in proximity thereto, and operable in a second mode to detune the receive coil to substantially inhibit power transfer from the corresponding transmit coil to the receive coil;
a forward telemetry circuit coupled to the receive coil, being operable to generate, responsive to a modulated data signal coupled onto the receive coil, a corresponding forward telemetry data output signal; and
a back telemetry circuit coupled to the receive coil, being operable to modulate, responsive to a back telemetry data input signal, a corresponding data signal onto the receive coil.
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Accused Products
Abstract
A system for transferring power to, and communicating with, at least one body-implantable active device includes an external power transfer system associated with an external device disposed outside of a body, operable to transfer power through a dermis layer to each body-implantable active device, and communicate data to and from each body-implantable active device, and also includes a power receiving system associated with each body-implantable active device, operable to receive power transferred from the external power transfer system, and communicate data to and from the external power transfer system. The body-implantable active device may include an implantable neurostimulation system.
128 Citations
21 Claims
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1. A system for transferring power to, and communicating with, at least one body-implantable active device, said system comprising:
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an external power transfer system associated with an external device disposed outside of a body, operable to transfer power through a dermis layer to each body-implantable active device, and communicate data to and from each body-implantable active device; and a power receiving system associated with each body-implantable active device, operable to receive power transferred from the external power transfer system, and communicate data to and from the external power transfer system; the external power transfer system including; at least one transmit coil, each corresponding to a respective body-implantable active device; a driver circuit operable to drive the at least one transmit coil with an AC signal; a forward telemetry circuit operable to modulate, responsive to a forward telemetry data input signal, a corresponding data signal within the AC signal; and a back telemetry circuit operable to generate, responsive to a data signal modulated within the AC signal, a corresponding back telemetry data output signal; each power receiving system respectively including; a receive coil tuned to the resonant frequency of the corresponding transmit coil; a charge receiving circuit coupled to the receive coil, said charge receiving circuit operable in a first mode to receive power transferred from the corresponding transmit coil to the receive coil when in proximity thereto, and operable in a second mode to detune the receive coil to substantially inhibit power transfer from the corresponding transmit coil to the receive coil; a forward telemetry circuit coupled to the receive coil, being operable to generate, responsive to a modulated data signal coupled onto the receive coil, a corresponding forward telemetry data output signal; and a back telemetry circuit coupled to the receive coil, being operable to modulate, responsive to a back telemetry data input signal, a corresponding data signal onto the receive coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for charging and communicating with at least two body-implanted active devices, each with a battery, said system comprising:
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an external charging system disposed outside of the body for transferring charging energy to the body and facilitating transmission of data to, and reception of data from, the body-implanted active devices; and a charge receiving system associated with each of the body-implanted active devices for receiving energy transferred from the external charging system and facilitating transmission of data to, and reception of data from, the external charging system; the external charging system including; a plurality of transmit coils disposed in series, each corresponding to a respective one of the body-implanted active devices; a driver circuit operable to drive the series-connected transmit coils with an AC signal; a data transmitter circuit operable to modulate a data signal within the AC signal; and a data receiver circuit operable to receive a data signal modulated within the AC signal; each of the charge receiving systems including; a receive coil tuned to the resonant frequency of an associated one of the transmit coils for receiving energy therefrom when in proximity thereto; a charge receiving circuit coupled to the receive coil, said charge receiving circuit operable in a first charging mode to receive energy transferred from the associated transmit coil to the receive coil, and operable in a second charging mode to detune the receive coil to inhibit transfer of energy from the associated transmit coil to the receive coil; a data receiver circuit operable to receive data from the receive coil in both the first and second charging modes; and a data transmitter circuit operable to transmit data to the receive coil in both the first and second charging modes; wherein the external charging system is operable to transmit data to each of the associated charge receiving systems, and receive data from each of the associated charge receiving systems, in both the first and second charging modes. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification