# US 2014/0194058 A1 · Implantable medical device and power controlling method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0194058 A1 - Document ID: US20140194058A1 - Status: Published application - Kind: A1 - Application number: 14/122,575 - Filed: 2011-10-27 - Published: 2014-07-10 - Earliest claimed: 2011-05-27 - Assignees: Alpinion Medical Systems Co., Ltd. - Applicants: Alpinion Medical Systems Co., Ltd. - Inventors: Ki-Won Lee; Hoseung Lee; Se-Ik Park - Web page: https://patentgrep.com/patent/US20140194058A1 ## CPC - H04B 5/79: for data transfer in combination with power transfer - A61N 1/3787: {from an external energy source} - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/00: Circuit arrangements or systems for wireless supply or distribution of electric power - H02J 50/10: using inductive coupling - H02J 50/12: of the resonant type - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H04B 5/266: {One coil at each side, e.g. with primary and secondary coils} - A61M 2205/04: implanted - A61M 2205/3523: using telemetric means - A61M 2205/8243: by induction - H02J 2105/46: Medical devices, medical implants or life supporting devices - H04B: TRANSMISSION - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract An implantable medical device includes a secondary coil for receiving an RF signal from the external terminal by an induced electromotive force excited by an external terminal primary coil. RF signal includes a power signal for energizing the medical device and data signal generated upon modulation of the power signal for use in controlling the medical device. The implantable medical device further comprises: a power processing block for converting the received power signal into DC for use by the implantable medical device; a data communication circuit activated by the DC supplied from the power processing block for demodulating the modulated data signal from the RF signal; a charge unit for charging a battery with the DC supplied from the power processing block; and a control unit to be operative by a power supply from the battery for controlling the implantable medical device according to the demodulated data signal. ## Claims ### Claim 1 An implantable medical device interworking with an external terminal having a primary coil, comprising: a secondary coil configured to receive an RF signal from the external terminal by an induction of an induced electromotive force between the primary coil and the secondary coil, the RF signal including a power signal for energizing the implantable medical device and a data signal generated upon modulation of the power signal for use in controlling the implantable medical device; a power processing block configured to convert the power signal into a DC power to be used by the implantable medical device; a data communication circuit configured to be activated by the DC power supplied from the power processing block and to demodulate a modulated data signal from the RF signal; a charge unit configured to charge a battery with the DC power supplied from the power processing block; and a control unit configured to be operated by an operation power supplied from the battery and to control the implantable medical device according to the demodulated data signal. ### Claim 2 (depends on 1) The implantable medical device of claim 1, wherein the power processing block comprises: a resonator configured to generate the RF signal from the induced electromotive force; a rectifier configured to rectify an AC power of the RF signal into the DC power; and a regulator configured to regulate a rectified DC power and supply a regulated DC power to the data communication circuit and the battery of the charge unit. ### Claim 3 (depends on 1) The implantable medical device of claim 1, further comprising a voltage regulator configured to regulate the operation power supplied from the battery and provide a regulated operation power to the control unit. ### Claim 4 (depends on 1) The implantable medical device of claim 1, wherein the external terminal comprises: a power signal generator configured to generate the power signal; a data signal generator configured to generate the data signal; and a power amplifier configured to generate a sinusoidal waveform corresponding to the power signal, modulate the sinusoidal waveform with the data signal to generate the RF signal, and transfer the RF signal to the primary coil. ### Claim 5 (depends on 1) The implantable medical device of claim 1, wherein the induced electromotive force is generated when the external terminal and the implantable medical device approach each other. ### Claim 6 A power control method for an implantable medical device, comprising: converting an RF signal induced between a primary coil provided at an external terminal and a secondary coil provided at the implantable medical device into a DC power to be used by the implantable medical device; and supplying a converted DC power to a data communication circuit for performing a data communication with the external terminal. ### Claim 7 (depends on 6) The power controlling method of claim 6, wherein the converted DC power is provided to charge the battery of the implantable medical device. ### Claim 8 An implantable medical device interworking with an external terminal having a primary coil, the implantable medical device comprising; a secondary coil configured to receive an RF signal from the external terminal by an induction of an induced electromotive force between the primary coil and the secondary coil, the RF signal including a power signal for energizing the implantable medical device and a data signal generated upon modulation of the power signal for use in controlling the implantable medical device; a power processing block configured to convert the received power signal into a DC power to be used by the implantable medical device; a charge unit configured to charge a battery with the DC power supplied from the power processing block; a communication signal detector configured to detect the data signal; a data communication circuit configured to be energized by the DC power supplied from the power processing block while the data signal is detected and to demodulate a modulated data; and a control unit configured to be energized by an operation power supplied from the battery, to control the implantable medical device according to a demodulated data signal, and to selectively connect or disconnect the power supply from the battery depending on the presence of the data signal detected by the communication signal detector. ### Claim 9 (depends on 8) The implantable medical device of claim 8, wherein the power processing block comprises: a resonator configured to generate the RF signal from the induced electromotive force; a rectifier configured to rectify an AC power by the RF signal into the DC power; and a regulator configured to regulate a rectified DC power and supply the rectified DC power to the data communication circuit and the battery of the charge unit. ### Claim 10 (depends on 8) The implantable medical device of claim 8, further comprising: a first regulator configured to regulate the operation power supplied from the battery and provide a regulated operation power to the control unit; and a second regulator configured to regulate the rectified DC power supplied by the power processing block and supply a regulated DC power to the data communication circuit. ### Claim 11 (depends on 10) The implantable medical device of claim 10, wherein the control unit enables the second regulator in response to detection of the data signal supplied from the communication signal detector. ### Claim 12 (depends on 8) The implantable medical device of claim 8, further comprising a switch disposed between the control unit and the charge unit to be turned on/off according to a control of the control unit. ### Claim 13 (depends on 12) The implantable medical device of claim 12, wherein the communication signal detector is further configured to generate the DC power by rectifying the power signal when the induced electromotive force is generated, and the control unit is awakened by the DC power and is operable to turn on the switch. ### Claim 14 A power control method for an implantable medical device, comprising: detecting an RF signal induced from a primary coil provided at an external terminal to a secondary coil provided at the implantable medical device, the RF signal including a power signal for energizing the implantable medical device and a data signal generated upon modulation of the power signal for use in controlling the implantable medical device; supplying a control unit, in response to a detection of the data signal, with an operation power from a battery of the implantable medical device, and supplying a data communication circuit for communicating with the external terminal with a DC power from a power processor after a conversion from the RF signal; and cutting off a power supply to the control unit and the data communication circuit in the absence of the detection of the data signal. ### Claim 15 (depends on 14) The power controlling method of claim 14, wherein the operation power is regulated by a regulator.