WO2012003131A2 - Charging system for an implantable medical device employing magnetic and electric fields - Google Patents

Charging system for an implantable medical device employing magnetic and electric fields Download PDF

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Publication number
WO2012003131A2
WO2012003131A2 PCT/US2011/041606 US2011041606W WO2012003131A2 WO 2012003131 A2 WO2012003131 A2 WO 2012003131A2 US 2011041606 W US2011041606 W US 2011041606W WO 2012003131 A2 WO2012003131 A2 WO 2012003131A2
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
charging
battery
field
implantable medical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2011/041606
Other languages
English (en)
French (fr)
Other versions
WO2012003131A3 (en
WO2012003131A4 (en
Inventor
Joey Chen
Robert Ozawa
Joonho Hyun
Vasily Dronov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Neuromodulation Corp
Original Assignee
Boston Scientific Neuromodulation Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boston Scientific Neuromodulation Corp filed Critical Boston Scientific Neuromodulation Corp
Priority to AU2011271597A priority Critical patent/AU2011271597B2/en
Priority to EP11728753.2A priority patent/EP2588192B1/en
Priority to CA2802758A priority patent/CA2802758C/en
Priority to JP2013518494A priority patent/JP2013530015A/ja
Priority to ES11728753.2T priority patent/ES2534880T3/es
Publication of WO2012003131A2 publication Critical patent/WO2012003131A2/en
Publication of WO2012003131A3 publication Critical patent/WO2012003131A3/en
Publication of WO2012003131A4 publication Critical patent/WO2012003131A4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/37211—Means for communicating with stimulators
    • A61N1/37217—Means for communicating with stimulators characterised by the communication link, e.g. acoustic or tactile
    • A61N1/37223—Circuits for electromagnetic coupling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/378—Electrical supply
    • A61N1/3787—Electrical supply from an external energy source
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to improved battery charging for an implantable medical device.
  • coil 17' is again energized with an alternating current.
  • Such energizing is generally of a constant frequency, and may be of a larger magnitude than that used during the transfer of data, but otherwise the basic physics involved are similar.
  • Figure 7 shows a schematic of the circuitry within the base station in accordance with an embodiment of the invention.
  • Charging information back telemetered from the IPG 100 can include the IPG's battery voltage (VBAT) and data indicative of the coupling between the base station and the IPG.
  • VBAT informs the microcontroller 212 of the present voltage of the IPG battery 26 during charging to allow the microcontroller 212 to either modify the power of the antenna 204 or coil 206 broadcasting the charging energy, or to suspend charging altogether once the battery 26 is full.
  • Charging circuitry 156 is well known in the art, and is capable of handling input voltages of different values, such as would be provides by VDCE and VDCB- Although shown as comprising two different inputs to charging circuitry 156, it should be understood that VDCE and VDCB can be selected as a single input to the circuitry 156 using a switch controlled by control signals B and E (not shown). Of course, assertion of neither of control signals B or E would signify that the IPG 100 is not recognizing the receipt of any charging field from the base station 200 (or any other source such as the external charger 50), and will behave accordingly.
  • Circuit 166 can also include corresponding demodulation circuits for receiving data from the base station 200, and in this regard, base station 200 can include an RF data transmitter coupled to antenna 204.
  • RF data transmission circuitry is not shown in the base station of Figure 7, because in a simple embodiment of the technique, the E-field antenna 204 only broadcasts E-fields for the purpose of charging the IPG's battery 26, as explained further below.
  • the base station 200 is broadcasting the B-field 304, with the hope that an IPG 100 will receive this broadcast, and will acknowledge receipt by broadcasting either some sort of acknowledgment, or the charging information discussed earlier. Accordingly, microcontroller 212 waits for a certain period of time (e.g., one minute) to receive back telemetry data at the LSK receiver 220.

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electrotherapy Devices (AREA)
PCT/US2011/041606 2010-07-01 2011-06-23 Charging system for an implantable medical device employing magnetic and electric fields Ceased WO2012003131A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2011271597A AU2011271597B2 (en) 2010-07-01 2011-06-23 Charging system for an implantable medical device employing magnetic and electric fields
EP11728753.2A EP2588192B1 (en) 2010-07-01 2011-06-23 Charging system for an implantable medical device employing magnetic and electric fields
CA2802758A CA2802758C (en) 2010-07-01 2011-06-23 Charging system for an implantable medical device employing magnetic and electric fields
JP2013518494A JP2013530015A (ja) 2010-07-01 2011-06-23 磁場及び電場を使用する埋め込み可能医療デバイスのための充電システム
ES11728753.2T ES2534880T3 (es) 2010-07-01 2011-06-23 Sistema de carga para un dispositivo médico implantable que emplea campos eléctricos y magnéticos

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36053610P 2010-07-01 2010-07-01
US61/360,536 2010-07-01

Publications (3)

Publication Number Publication Date
WO2012003131A2 true WO2012003131A2 (en) 2012-01-05
WO2012003131A3 WO2012003131A3 (en) 2012-02-23
WO2012003131A4 WO2012003131A4 (en) 2012-04-12

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2011/041606 Ceased WO2012003131A2 (en) 2010-07-01 2011-06-23 Charging system for an implantable medical device employing magnetic and electric fields
PCT/US2011/041773 Ceased WO2012003140A2 (en) 2010-07-01 2011-06-24 Implantable medical device and charging system employing electric fields

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2011/041773 Ceased WO2012003140A2 (en) 2010-07-01 2011-06-24 Implantable medical device and charging system employing electric fields

Country Status (7)

Country Link
US (4) US9044616B2 (enExample)
EP (2) EP2588192B1 (enExample)
JP (3) JP2013530015A (enExample)
AU (2) AU2011271597B2 (enExample)
CA (3) CA2802758C (enExample)
ES (1) ES2534880T3 (enExample)
WO (2) WO2012003131A2 (enExample)

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US9211416B2 (en) 2015-12-15

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