CHARGING SYSTEM INCORPORATING DATA COMMUNICATION AND POWER TRANSMISSION USING OPPOSITE POLARITY HALF-WAVE RECTIFIED SIGNALS RECEIVED BY IMPLANTED DEVICE
First Claim
1. A system for transferring power and communicating data from an external power transfer system (EPTS) to at least one body-implantable active device (BIAD) through a dermis layer, said system comprising:
- an EPTS for being disposed external to a dermis layer of a body; and
a BIAD for being disposed beneath a dermis layer of the body;
the EPTS including;
a transmit coil;
a transmit coil driver circuit operable to drive the transmit coil with a resonant current at a resonant frequency; and
a forward telemetry circuit operable to modulate the resonant current in accordance with a forward telemetry data stream;
the BIAD including;
a receive coil tuned to the resonant frequency of the transmit coil and operable to inductively receive power therefrom when in proximity thereto;
a power receiving circuit coupled to the receive coil, said power receiving circuit including a first half-wave rectifier circuit having a first polarity and operable to provide on an output thereof a first rectified voltage, and which output is coupled to a power delivery circuit within the BIAD; and
a telemetry receiving circuit coupled to the receive coil, said telemetry receiving circuit including a second half-wave rectifier circuit having a second polarity opposite the first polarity, and operable to provide on an output thereof a rectified data output signal corresponding to the forward telemetry data stream.
3 Assignments
0 Petitions
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.
2 Citations
26 Claims
-
1. A system for transferring power and communicating data from an external power transfer system (EPTS) to at least one body-implantable active device (BIAD) through a dermis layer, said system comprising:
-
an EPTS for being disposed external to a dermis layer of a body; and a BIAD for being disposed beneath a dermis layer of the body; the EPTS including; a transmit coil; a transmit coil driver circuit operable to drive the transmit coil with a resonant current at a resonant frequency; and a forward telemetry circuit operable to modulate the resonant current in accordance with a forward telemetry data stream; the BIAD including; a receive coil tuned to the resonant frequency of the transmit coil and operable to inductively receive power therefrom when in proximity thereto; a power receiving circuit coupled to the receive coil, said power receiving circuit including a first half-wave rectifier circuit having a first polarity and operable to provide on an output thereof a first rectified voltage, and which output is coupled to a power delivery circuit within the BIAD; and a telemetry receiving circuit coupled to the receive coil, said telemetry receiving circuit including a second half-wave rectifier circuit having a second polarity opposite the first polarity, and operable to provide on an output thereof a rectified data output signal corresponding to the forward telemetry data stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A system for transferring power and communicating data from an external power transfer system (EPTS) to at least one body-implantable active device (BIAD) through a dermis layer, said system comprising:
-
an EPTS disposed outside of a body; and at least one BIAD disposed beneath a dermis layer of the body; the EPTS including; a group of one or more transmit coils disposed in series, each corresponding to a respective BIAD; a transmit coil driver circuit operable to drive the group of one or more transmit coils with an AC signal; and a forward telemetry circuit operable to modulate a forward telemetry data signal within the AC signal; each of said at least one BIAD respectively including; a receive coil tuned to the resonant frequency of the corresponding transmit coil and operable to receive power therefrom when in proximity thereto; a power receiving circuit coupled to the receive coil, said power receiving circuit including a first half-wave rectifier circuit having a first polarity and operable to provide on an output thereof a rectified voltage for use as a power source for the respective BIAD; and a telemetry receiving circuit coupled to the receive coil, said telemetry receiving circuit including a second half-wave rectifier circuit having a second polarity opposite the first polarity, and operable to provide on an output thereof a rectified data output signal corresponding to the forward telemetry data signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
Specification