Patents by Inventor R. Tissa Karunasiri

R. Tissa Karunasiri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11889269
    Abstract: A cochlear implant system includes a cochlear implant configured to be implanted within a patient and a sound processor communicatively coupled to the cochlear implant. The sound processor detects a unique identifier of the cochlear implant and establishes, by way of a network, an active network link with a remote computing system located remotely from the cochlear implant system. The sound processor transmits the unique identifier of the cochlear implant to the remote computing system over the active network link and, in response, receives data representative of a sound processing program associated with the cochlear implant from the remote computing system over the active network link. The sound processor stores the received data representative of the sound processing program on a local storage facility associated with the sound processor. Corresponding systems and methods are also disclosed.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: January 30, 2024
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Szilard V. Gyalay, Anthony J. Spahr
  • Publication number: 20230108415
    Abstract: An illustrative system includes a coil configured to be positioned over a wound on a body and held in place on the body by a magnet implanted within the body; and a controller communicatively coupled to the coil, the controller configured to apply therapeutic electromagnetic pulses by way of the coil to the wound. Other systems and methods for providing therapeutic electromagnetic pulses to a recipient are also disclosed.
    Type: Application
    Filed: December 5, 2022
    Publication date: April 6, 2023
    Inventors: Leonid M. Litvak, R. Tissa Karunasiri, Kanthaiah Koka, Smita S. Agrawal
  • Patent number: 11554268
    Abstract: An exemplary system includes a coil configured to be positioned over a wound on a body and held in place on the body by a magnet implanted within the body. The system further includes a controller communicatively coupled to the coil and configured to apply therapeutic electromagnetic pulses by way of the coil to the wound. Other systems and methods for providing therapeutic electromagnetic pulses to a recipient are also disclosed.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: January 17, 2023
    Assignee: Advanced Bionics AG
    Inventors: Leonid M. Litvak, R. Tissa Karunasiri, Kanthaiah Koka, Smita S. Agrawal
  • Publication number: 20220339445
    Abstract: An illustrative cochlear implant system includes an electrode lead having an array of electrodes, a cochlear implant coupled with the electrode lead and configured to be implanted within a recipient together with the electrode lead, and a processing unit communicatively coupled to the cochlear implant. The processing unit is configured to direct the cochlear implant to apply stimulation to the recipient by way of the array of electrodes. The processing unit is further configured to detect, by way of one or more electrodes included in the array of electrodes, a cortical potential produced by the recipient. Based on the detected cortical potential, the processing unit is configured to determine a fitting parameter associated with the cochlear implant system. Corresponding systems and methods are also disclosed.
    Type: Application
    Filed: October 23, 2020
    Publication date: October 27, 2022
    Inventors: Leonid M. Litvak, R. Tissa Karunasiri, Hannah A. Glick, Kanthaiah Koka, Chen Chen, Jason Galster
  • Publication number: 20220330844
    Abstract: An illustrative system includes a stimulation device configured to apply stimulation to a recipient, a sensing device configured to detect a physiological condition of the recipient, and a processing unit communicatively coupled to the stimulation device and the sensing device. The processing unit determines a stimulation strategy that is customized to the recipient and includes stimulation frames and stimulation gaps. The processing unit then directs the stimulation device to apply the stimulation to the recipient in accordance with the stimulation strategy by applying the stimulation only during time that corresponds to the stimulation frames. The processing unit also directs the sensing device to detect the physiological condition of the recipient in accordance with the stimulation strategy by detecting only during time that corresponds to the stimulation gaps. Based on the detected physiological condition, the processing unit performs an action.
    Type: Application
    Filed: October 23, 2020
    Publication date: October 20, 2022
    Inventors: Leonid M. Litvak, R. Tissa Karunasiri, Hannah A. Glick, Kanthaiah Koka, Chen Chen, Anthony J. Spahr, Jason Galster, Dean Swan
  • Publication number: 20220307912
    Abstract: A system may include a device configured to be implanted within a recipient and that includes an integrated circuit. The integrated circuit may include a first node configured to provide a bandgap reference voltage and a second node configured to provide a CTAT voltage. The first node may be coupled to a first input of an ADC and the second node may be coupled to a second input of the ADC. The system may also include a processor communicatively coupled to an output of the ADC. The processor may be configured to determine, based on the output of the ADC, the CTAT voltage. The processor may be further configured to determine, based on the CTAT voltage, a temperature of the device.
    Type: Application
    Filed: June 28, 2019
    Publication date: September 29, 2022
    Inventors: R. Tissa Karunasiri, Scott Kenneth Arfin
  • Publication number: 20220123603
    Abstract: A system includes electronic circuitry that receives a self-clocking differential signal comprising a data signal encoded with a clock signal at a dock frequency. The electronic circuitry is configured to recover, from the self-docking differential signal, the data signal and the dock signal. Then, based on the recovered dock signal, the electronic circuitry is configured to wirelessly transmit, to an implantable stimulator implanted within a recipient, a forward telemetry signal representing data recovered from the data signal. Corresponding systems, methods, devices, and application specific integrated circuits (ASICs) are also disclosed.
    Type: Application
    Filed: December 31, 2021
    Publication date: April 21, 2022
    Inventors: R. Tissa Karunasiri, Glen A. Griffith
  • Patent number: 11260219
    Abstract: An exemplary sound processor included in a cochlear implant system may include a control facility that represents a first frequency domain signal to a patient by 1) directing a cochlear implant included in the cochlear implant system to apply, during a first stimulation frame, a first monophasic stimulation pulse representative of a first temporal portion of the first frequency domain signal that corresponds to the first stimulation frame, the first monophasic stimulation pulse having a first polarity, and 2) directing the cochlear implant to apply, during a second stimulation frame that is temporally subsequent to the first stimulation frame, a second monophasic stimulation pulse representative of a second temporal portion of the first frequency domain signal that corresponds to the second stimulation frame, the second monophasic stimulation pulse configured to at least partially charge balance the first monophasic stimulation pulse and having a second polarity opposite the first polarity.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: March 1, 2022
    Assignee: Advanced Bionics AG
    Inventor: R. Tissa Karunasiri
  • Patent number: 11251660
    Abstract: A system includes an interface assembly and electronic circuitry. The interface assembly is configured to receive DC power and a self-clocking differential signal comprising a data signal encoded with a clock signal at a clock frequency. The electronic circuitry is configured to recover, from the self-clocking differential signal, the data signal and the clock signal at the clock frequency, and to generate, based on the recovered clock signal at the clock frequency, a synthesized clock signal at a carrier frequency. The electronic circuitry is also configured to use the synthesized clock signal to wirelessly transmit, to an implantable stimulator implanted within a recipient, AC power based on the DC power and forward telemetry data based on the recovered data signal. Corresponding systems, methods, and devices are also disclosed.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: February 15, 2022
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Glen A. Griffith
  • Patent number: 11213688
    Abstract: An exemplary system includes a sound processor configured to wirelessly communicate, while operating in a first mode, with a cochlear implant by way of a wearable headpiece coil configured to be worn on a head of a recipient of the cochlear implant, a non-wearable coil configured to be located away from the recipient, and an interface device configured to provide operating power to the non-wearable coil and communicatively couple to the sound processor while the sound processor is operating in a second mode. While the sound processor is coupled to the interface device and operating in the second mode, the non-wearable coil is configured to provide radio frequency (RF) power to the cochlear implant to keep the cochlear implant listening for commands from the sound processor.
    Type: Grant
    Filed: March 30, 2019
    Date of Patent: January 4, 2022
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Mark B. Downing
  • Publication number: 20210361968
    Abstract: An exemplary system includes a coil configured to be positioned over a wound on a body and held in place on the body by a magnet implanted within the body. The system further includes a controller communicatively coupled to the coil and configured to apply therapeutic electromagnetic pulses by way of the coil to the wound. Other systems and methods for providing therapeutic electromagnetic pulses to a recipient are also disclosed.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 25, 2021
    Inventors: Leonid M. Litvak, R. Tissa Karunasiri, Kanthaiah Koka, Smita S. Agrawal
  • Patent number: 11121586
    Abstract: A system includes an interface assembly and electronic circuitry. The interface assembly is configured to receive DC power and a self-clocking differential signal comprising a data signal encoded with a clock signal at a clock frequency. The electronic circuitry is configured to recover, from the self-clocking differential signal, the data signal and the clock signal at the clock frequency, and to generate, based on the recovered clock signal at the clock frequency, a first synthesized clock signal at a first carrier frequency and a second synthesized clock signal at a second carrier frequency. The electronic circuitry is also configured to wirelessly transmit AC power and a data-modulated AC signal to an implantable stimulator implanted within a patient. The AC power is at the first carrier frequency and based on the DC power, while the data-modulated AC signal is at the second carrier frequency and based on the recovered data signal.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: September 14, 2021
    Assignee: Advanced Bionics AG
    Inventor: R. Tissa Karunasiri
  • Patent number: 11115763
    Abstract: A device includes a voltage source configured to selectively drive a first wire and a second wire with a first voltage level. The device further includes an adjustable current source configured to selectively discharge the first and second wire. The device further includes a control circuit configured to output data and power by way of the first and second wire by selectively coupling the first wire to the voltage source and the second wire to the adjustable current source such that, during a first time period, the first wire has the first voltage level and the second wire has a second voltage level. The data and power is output by also selectively switching the couplings of the first time period such that, during a second time period subsequent to the first time period, the first wire has the second voltage level and the second wire has the first voltage level.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: September 7, 2021
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Jie Yan, Scott Kenneth Arfin, Don Banh
  • Patent number: 11106230
    Abstract: An amplitude shift keying (ASK) modulation system includes a linear regulator circuit powered by input direct current (DC) power at a first voltage level and that generates regulated DC power at a second voltage level tracking the first voltage level. The system also includes an intermediate DC power switching circuit that receives a digital data signal and selectively couples an intermediate power node with the input DC power at the first voltage level when the digital data signal represents a first binary value, and with the regulated DC power at the second voltage level when the digital data signal represents a second binary value. The ASK modulation system also includes a radio frequency (RF) driver circuit powered by intermediate DC power received at the intermediate power node and that delivers RF output power representative of the digital data signal to a load at an RF carrier frequency.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: August 31, 2021
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Scott Kenneth Arfin
  • Publication number: 20210243537
    Abstract: A device includes a voltage source configured to selectively drive a first wire and a second wire with a first voltage level. The device further includes an adjustable current source configured to selectively discharge the first and second wire. The device further includes a control circuit configured to output data and power by way of the first and second wire by selectively coupling the first wire to the voltage source and the second wire to the adjustable current source such that, during a first time period, the first wire has the first voltage level and the second wire has a second voltage level. The data and power is output by also selectively switching the couplings of the first time period such that, during a second time period subsequent to the first time period, the first wire has the second voltage level and the second wire has the first voltage level.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 5, 2021
    Inventors: R. Tissa Karunasiri, Jie Yan, Scott Kenneth Arfin, Don Banh
  • Publication number: 20210099814
    Abstract: A cochlear implant system includes a cochlear implant configured to be implanted within a patient and a sound processor communicatively coupled to the cochlear implant. The sound processor detects a unique identifier of the cochlear implant and establishes, by way of a network, an active network link with a remote computing system located remotely from the cochlear implant system. The sound processor transmits the unique identifier of the cochlear implant to the remote computing system over the active network link and, in response, receives data representative of a sound processing program associated with the cochlear implant from the remote computing system over the active network link. The sound processor stores the received data representative of the sound processing program on a local storage facility associated with the sound processor. Corresponding systems and methods are also disclosed.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 1, 2021
    Inventors: R. Tissa Karunasiri, Szilard V. Gyalay, Anthony J. Spahr
  • Publication number: 20210083529
    Abstract: A system includes an interface assembly and electronic circuitry. The interface assembly is configured to receive DC power and a self-clocking differential signal comprising a data signal encoded with a clock signal at a clock frequency. The electronic circuitry is configured to recover, from the self-clocking differential signal, the data signal and the clock signal at the clock frequency, and to generate, based on the recovered clock signal at the clock frequency, a synthesized clock signal at a carrier frequency. The electronic circuitry is also configured to use the synthesized clock signal to wirelessly transmit, to an implantable stimulator implanted within a recipient, AC power based on the DC power and forward telemetry data based on the recovered data signal. Corresponding systems, methods, and devices are also disclosed.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Inventors: R. Tissa Karunasiri, Glen A. Griffith
  • Patent number: 10904680
    Abstract: A sound processor assembly included within a cochlear implant system includes a sound processor and a battery assembly. The sound processor includes a physical computing device configured to direct operation of a cochlear implant in accordance with a sound processing program associated with a cochlear implant implanted within a patient. The battery assembly includes an electric battery configured to provide electrical power to the sound processor, as well as a storage facility configured to store the sound processing program associated with the cochlear implant. The storage facility is integrated with the electric battery within the battery assembly. The sound processor assembly also includes a bidirectional communication interface communicatively coupling the battery assembly to the sound processor to allow the sound processor to store data to, and to retrieve stored data from, the storage facility of the battery assembly by way of the bidirectional communication interface.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: January 26, 2021
    Assignee: Advanced Bionics AG
    Inventors: R. Tissa Karunasiri, Szilard V. Gyalay, Anthony J. Spahr
  • Publication number: 20200306548
    Abstract: An exemplary system includes a sound processor configured to wirelessly communicate, while operating in a first mode, with a cochlear implant by way of a wearable headpiece coil configured to be worn on a head of a recipient of the cochlear implant, a non-wearable coil configured to be located away from the recipient, and an interface device configured to provide operating power to the non-wearable coil and communicatively couple to the sound processor while the sound processor is operating in a second mode. While the sound processor is coupled to the interface device and operating in the second mode, the non-wearable coil is configured to provide radio frequency (RF) power to the cochlear implant to keep the cochlear implant listening for commands from the sound processor.
    Type: Application
    Filed: March 30, 2019
    Publication date: October 1, 2020
    Inventors: R. Tissa Karunasiri, Mark B. Downing
  • Publication number: 20200057462
    Abstract: An amplitude shift keying (ASK) modulation system includes a linear regulator circuit powered by input direct current (DC) power at a first voltage level and that generates regulated DC power at a second voltage level tracking the first voltage level. The system also includes an intermediate DC power switching circuit that receives a digital data signal and selectively couples an intermediate power node with the input DC power at the first voltage level when the digital data signal represents a first binary value, and with the regulated DC power at the second voltage level when the digital data signal represents a second binary value. The ASK modulation system also includes a radio frequency (RF) driver circuit powered by intermediate DC power received at the intermediate power node and that delivers RF output power representative of the digital data signal to a load at an RF carrier frequency.
    Type: Application
    Filed: January 29, 2018
    Publication date: February 20, 2020
    Inventors: R. Tissa Karunasiri, Scott Kenneth Arfin