Wireless implantable power receiver system and methods
Inventors
Perryman, Laura Tyler • Andresen, Chad
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-10994149-B2
Publication Date
2021-05-04
Expiration Date
Abstract
A method and system is presented for an implantable wireless power receiver for use with a medical stimulation or monitoring device. The receiver receives transmitted energy through one or more non-inductive antenna(s), utilizes microelectronics to perform rectification of the received signal for generation of a DC power supply to power an implantable device, and may also utilize microelectronics to provide parameter settings to the device, or stimulating or other waveforms to a tissue.
Core Innovation
The invention provides a wireless implantable power receiver that uses one or more non-inductive antennas configured to receive, without inductive coupling, electrical energy radiated from outside a subject. Electronic circuitry on the wireless implantable power receiver converts the received radiated electrical energy, without inductive coupling, to create one or more electrical pulses for an implantable medical stimulation device. The converted energy provides voltages higher than 2V sufficient for the implantable medical stimulation device to deliver electrical currents suitable for stimulating tissue surrounding the implantable medical stimulation device.
The electronic circuitry comprises a bridge rectifier including two parallel pairs of diodes, with a first pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to-cathode in series. The invention further specifies rectification circuitry and smoothing circuitry, and in related dependent implementations the smoothing circuitry comprises one or more resistors and one or more capacitors. In a stand-alone configuration, the wireless implantable power receiver is distinct and different from the implantable medical stimulation device and powers it such that the implantable medical stimulation device does not require battery power or wired power from outside the subject.
The described system can enclose the implantable wireless power receiver within the implantable medical stimulation device such that the implantable wireless power receiver is connected to the implantable medical stimulation device. In operation, the non-inductive antennas receive electrical energy radiated from outside the subject and the electronic circuitry converts that radiated electrical energy, without inductive coupling, to provide the voltages higher than 2V for tissue stimulation. The disclosed power-delivery approach also supports providing parameter settings to the medical stimulation device so it delivers electrical currents suitable for stimulating tissue surrounding the medical stimulation device.
Claims Coverage
The independent claims identified are 1, 11, 26, and 37, each centered on a stand-alone wireless implantable power receiver that receives externally radiated electrical energy using non-inductive antennas without inductive coupling and powers an implantable medical stimulation device with voltages higher than 2V without battery or wired external power, while converting the received energy using a diode-bridge rectifier arrangement.
Non-inductive radiated-energy power receiver for batteryless stimulation
A wireless implantable power receiver with a non-inductive antenna configured to receive, without inductive coupling, electrical energy radiated from outside a subject; and electronic circuitry configured to convert the radiated electrical energy as received, without inductive coupling, by the non-inductive antenna to create one or more electrical pulses to drive an implantable medical stimulation device with voltages higher than 2V sufficient for the implantable medical stimulation device to deliver electrical currents suitable for stimulating tissue surrounding the implantable medical stimulation device; wherein the wireless implantable power receiver is a stand-alone device distinct and different from the implantable medical stimulation device, and the implantable medical stimulation device does not require battery power or wired power from outside the subject.
Parameter-setting power receiver for implanted stimulation
A wireless implantable power receiver for a medical stimulation device implanted in a subject comprising: a non-inductive antenna configured to receive, without inductive coupling, electrical energy radiated from outside the subject; and electronic circuitry configured to convert the radiated electrical energy as received, without inductive coupling, by the non-inductive antenna to power the medical stimulation device implanted in the subject with voltages higher than 2V and to provide parameter settings to the medical stimulation device such that the medical stimulation device delivers electrical currents suitable for stimulating tissue surrounding the medical stimulation device; wherein the electronic circuitry comprises a bridge rectifier including two parallel pairs of diodes configured as a first pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to cathode in series; wherein the wireless implantable power receiver is a stand-alone device distinct and different from the medical stimulation device, and the medical stimulation device is powered such that the medical stimulation device does not require battery power or wired power from outside the subject.
System pairing implantable stimulation device with stand-alone wireless power receiver
A medical device system comprising: an implantable medical stimulation device; and a wireless implantable power receiver comprising a non-inductive antenna configured to receive, without inductive coupling, electrical energy radiated from outside a subject; and electronic circuitry configured to convert the radiated electrical energy as received, without inductive coupling, by the non-inductive antenna to power the implantable medical stimulation device implanted in the subject with voltages higher than 2V sufficient for the implantable medical stimulation device to deliver electrical currents suitable for stimulating tissue surrounding the medical stimulation device; wherein the electronic circuitry comprises a bridge rectifier including two parallel pairs of diodes configured with a first pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to cathode in series; wherein the wireless implantable power receiver is a stand-alone device distinct and different from the medical stimulation device, and wherein the medical stimulation device does not require battery power or wired power from outside the subject.
Implantation method using a stand-alone wireless power receiver with non-inductive antennas
A method of delivering electrical signals to power to an implantable medical stimulation device comprising: enclosing an implantable wireless power receiver within the implantable medical stimulation device such that the implantable wireless power receiver is connected to the implantable medical stimulation device, wherein the implantable wireless power receiver is a stand-alone device distinct and different from the implantable medical stimulation device; implanting the implantable wireless power receiver and the implantable medical stimulation device into tissue in a subject such that one or more non-inductive antennas on the implantable wireless power receiver receives, without inductive coupling, electrical energy radiated from outside the subject, and electronic circuitry converts the radiated electrical energy as received, without inductive coupling, to power the implantable medical stimulation device with voltages higher than 2V sufficient for the implantable medical stimulation device to deliver electrical currents suitable for stimulating tissue surrounding the implantable medical stimulation device; wherein the electronic circuitry comprises a bridge rectifier including two parallel pairs of diodes with a first pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to cathode in series; and operating the medical stimulation device using the converted electrical energy without requiring battery power or wired power from outside the subject.
Across the independent claims, the central coverage is a wireless implantable power receiver that uses a non-inductive antenna to receive externally radiated electrical energy without inductive coupling, converts the received energy using a bridge rectifier with two parallel diode pairs connected anode-to-anode in series and cathode-to-cathode in series, and powers an implantable medical stimulation device with voltages higher than 2V so that the stimulation device does not require battery power or wired power from outside the subject. One independent claim further adds providing parameter settings to the implanted medical stimulation device.
Stated Advantages
The implantable medical stimulation device does not require battery power or wired power from outside the subject.
Documented Applications
Delivering electrical signals to power an implantable medical stimulation device for stimulating tissue surrounding the implantable medical stimulation device.
Providing parameter settings to an implanted medical stimulation device so it delivers electrical currents suitable for stimulating tissue surrounding the medical stimulation device.
Interested in licensing this patent?