Patents by Inventor Rafael Carbunaru

Rafael Carbunaru 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).

  • Publication number: 20180050205
    Abstract: An electrical stimulation system includes an implantable control module configured and arranged for implantation in a body of a patient. The implantable control module includes a processor that generates and delivers electrical stimulation pulses or pulse bursts at a pathological frequency or with a temporal separation between pulses or pulse bursts individually selected based on a pre-determined distribution function based on a pre-selected pathological frequency.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 22, 2018
    Inventors: Michael A. Moffitt, Stephen Carcieri, Hemant Bokil, Rafael Carbunaru
  • Patent number: 9887573
    Abstract: An algorithm programmed into the control circuitry of a rechargeable-battery Implantable Medical Device (IMD) is disclosed that can quantitatively forecast and determine the timing of an early replacement indicator (tEOLi) and an IMD End of Life (tEOL). These forecasts and determinations of tEOLi and tEOL occur in accordance with one or more parameters having an effect on rechargeable battery capacity, such as number of charging cycles, charging current, discharge depth, load current, and battery calendar age. The algorithm consults such parameters as stored over the history of the operation of the IMD in a parameter log, and in conjunction with a battery capacity database reflective of the effect of these parameters on battery capacity, determines and forecasts tEOLi and tEOL. Such forecasted or determined values may also be used by a shutdown algorithm to suspend therapeutic operation of the IMD.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: February 6, 2018
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Goran N. Marnfeldt, Rafael Carbunaru, Jordi Parramon
  • Patent number: 9867995
    Abstract: An external charger for a battery in an implantable medical device and charging techniques are disclosed. Simulation data is used to model the power dissipation of the charging circuitry in the implant at varying levels of implant power. A power dissipation limit constrains the charging circuitry from producing an inordinate amount of heat to the tissue surrounding the implant, and duty cycles of a charging field are determined so as not to exceed that limit. A maximum simulated average battery current determines the optimal (i.e., quickest) battery charging current, and at least an optimal value for a parameter indicative of that current is determined and stored in the external charger. During charging, the actual value for that parameter is determined, and the intensity and/or duty cycle of the charging field are adjusted to ensure that charging is as fast as possible, while still not exceeding the power dissipation limit.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 16, 2018
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Rafael Carbunaru, Jordi Parramon, Robert Ozawa, Jess Shi, Joey Chen, Md. Mizanur Rahman
  • Publication number: 20170368355
    Abstract: A method for configuring stimulation pulses in an implantable stimulator device having a plurality of electrodes is disclosed, which method is particularly useful in adjusting the electrodes by current steering during initialization of the device. In one aspect, a set of ideal pulses for patient therapy is determined, in which at least two of the ideal pulses are of the same polarity and are intended to be simultaneous applied to corresponding electrodes on the implantable stimulator device during an initial duration. These pulses are reconstructed into fractionalized pulses, each comprised of pulse portions. The fractionalized pulses are applied to the corresponding electrodes on the device during a final duration, but the pulse portions of the fractionalized pulses are not simultaneously applied during the final duration.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 28, 2017
    Inventors: Jordi Parramon, Rafael Carbunaru, Matt I. Haller
  • Patent number: 9833610
    Abstract: A lead assembly includes an implantable lead. Electrodes are disposed along a distal end of the lead in an electrode array. Terminals are disposed along a proximal end of the lead in a proximal-most terminal array and a medial terminal array. A terminal extension electrically couples to the medial terminal array. A port is defined in a connector at a first end of the terminal extension. The port has a first end and an opposing second end and forms a continuous passageway therebetween. The port receives the medial terminal array. A contact array includes connector contacts that are disposed within the port and that couple electrically with a terminal array disposed along a second end of the terminal extension. The contact array couples electrically with terminals of the medial terminal array of the lead when the medial terminal array is received by the port.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 5, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Matthew Lee McDonald, Jacob Matthew Muhleman, Rafael Carbunaru
  • Publication number: 20170326365
    Abstract: A method and neurostimulation system for treating a patient are provided. A plurality of pulsed electrical waveforms are respectively delivered within a plurality of timing channels of the neurostimulation system, thereby treating the patient. Sets of stimulation pulses within the pulsed electrical waveforms that will potentially overlap temporally are predicted. Stimulation pulses in the respective pulsed electrical waveforms are temporally shifted in a manner that prevents overlap of the potentially overlapping pulse sets while preventing frequency locking between the timing channels.
    Type: Application
    Filed: August 3, 2017
    Publication date: November 16, 2017
    Inventors: Courtney C. Lane, Rafael Carbunaru, Kerry Bradley, David K.L. Peterson, Andrew DiGiore, Michael A. Moffitt
  • Patent number: 9814882
    Abstract: A rechargeable-battery Implantable Medical Device (IMD) is disclosed including a primary battery which can be used as a back up to power critical loads in the IMD when the rechargeable battery is undervoltage and other non-critical loads are thus decoupled from the rechargeable battery. A rechargeable battery undervoltage detector provides at least one rechargeable battery undervoltage control signal to a power supply selector, which is used to set the power supply for the critical loads either to the rechargeable battery voltage when the rechargeable battery is not undervoltage, or to the primary battery voltage when the rechargeable battery is undervoltage. Circuitry for detecting the rechargeable battery undervoltage condition may be included as part of the critical loads, and so the undervoltage control signal(s) is reliably generated in a manner to additionally decouple the rechargeable battery from the load to prevent further rechargeable battery depletion.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 14, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Goran N. Marnfeldt, Rafael Carbunaru, Jordi Parramon
  • Publication number: 20170304627
    Abstract: An algorithm programmed into the control circuitry of a rechargeable-battery Implantable Medical Device (IMD) is disclosed that can adjust the charging current (Ibat) provided to the rechargeable battery over time (e.g., the life of the IMD) in accordance with one or more of the parameters having an effect on rechargeable battery capacity, such as number of charging cycles, charging current, discharge depth, load current, and battery calendar age. The algorithm consults such parameters as stored over the history of the operation of the IMD in a parameter log, and in conjunction with a battery capacity database reflective of the effect of these parameters on battery capacity, estimates a change in the capacity of the battery, and adjust the charging current in one or both of trickle and active charging paths to slow the loss of battery capacity and extend the life of the IMD.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: Goran N. Marnfeldt, Rafael Carbunaru, Jordi Parramon
  • Publication number: 20170296833
    Abstract: Apparatus and methods for charging an implanted medical device.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 19, 2017
    Inventors: Kristen Jaax, Rafael Carbunaru, Mun Pook Lui, Todd K. Whitehurst, Andrew DiGiore, Brett Daniel Schleicher, Gregory Baldwin, Michael A. Moffitt, Jeffery Van Funderburk, James C. Makous
  • Patent number: 9782593
    Abstract: A method for configuring stimulation pulses in an implantable stimulator device having a plurality of electrodes is disclosed, which method is particularly useful in adjusting the electrodes by current steering during initialization of the device. In one aspect, a set of ideal pulses for patient therapy is determined, in which at least two of the ideal pulses are of the same polarity and are intended to be simultaneous applied to corresponding electrodes on the implantable stimulator device during an initial duration. These pulses are reconstructed into fractionalized pulses, each comprised of pulse portions. The fractionalized pulses are applied to the corresponding electrodes on the device during a final duration, but the pulse portions of the fractionalized pulses are not simultaneously applied during the final duration.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: October 10, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Jordi Parramon, Rafael Carbunaru, Matt I. Haller
  • Publication number: 20170281956
    Abstract: Improved external chargers for charging an implantable medical device, and particularly useful in charging a plurality of such devices, are disclosed. Each of the various embodiments include a plurality of field customization coils for customizing the magnetic charging field generated by the external charger such that the magnetic charging field is not radially symmetric. For example, one embodiment includes a primary coil with a plurality of field customization coils distributed radially with respect to the coil. The generated magnetic charging field can be rendered radially asymmetric by selectively activating or disabling the field customization coils in response to data quantifying the coupling between the various implants and the field customization coils in the charger.
    Type: Application
    Filed: June 6, 2017
    Publication date: October 5, 2017
    Inventors: Rafael Carbunaru, Andrew DiGiore, Todd Whitehurst
  • Patent number: 9737703
    Abstract: Methods of providing therapy to a patient are provided. In one method, the patient has a neuron to which a sub-threshold biological electrical stimulus is applied. The method comprises applying electrical noise energy to the neuron, wherein resonance between the biological electrical stimulus and the electrical noise energy is created, such that an action potential is propagated along the axon of the neuron. In another method, the patient has a neuron to which a supra-threshold biological electrical stimulus is applied. This method comprises applying supra-threshold electrical noise energy to the neuron, thereby preventing an action potential from being propagated along the axon of the neuron. Still another method comprises applying an electrical stimulus to a neuron, and applying supra-threshold electrical noise energy to the neuron, thereby preventing or reversing any neurological accommodation of the neuron that may occur in response to the electrical stimulus.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: August 22, 2017
    Assignee: BOSTON SCIENTIFIC NEUROMODULATION CORPORATION
    Inventors: Rafael Carbunaru, Michael Moffitt, Kristen Jaax, Andrew DiGiore, Courtney Lane
  • Patent number: 9724513
    Abstract: A method and neurostimulation system for treating a patient are provided. A plurality of pulsed electrical waveforms are respectively delivered within a plurality of timing channels of the neurostimulation system, thereby treating the patient. Sets of stimulation pulses within the pulsed electrical waveforms that will potentially overlap temporally are predicted. Stimulation pulses in the respective pulsed electrical waveforms are temporally shifted in a manner that prevents overlap of the potentially overlapping pulse sets while preventing frequency locking between the timing channels.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 8, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Courtney Lane, Rafael Carbunaru, Kerry Bradley, David K. L. Peterson, Andrew DiGiore, Michael Moffitt
  • Patent number: 9707395
    Abstract: An algorithm programmed into the control circuitry of a rechargeable-battery Implantable Medical Device (IMD) is disclosed that can adjust the charging current (Ibat) provided to the rechargeable battery over time (e.g., the life of the IMD) in accordance with one or more of the parameters having an effect on rechargeable battery capacity, such as number of charging cycles, charging current, discharge depth, load current, and battery calendar age. The algorithm consults such parameters as stored over the history of the operation of the IMD in a parameter log, and in conjunction with a battery capacity database reflective of the effect of these parameters on battery capacity, estimates a change in the capacity of the battery, and adjust the charging current in one or both of trickle and active charging paths to slow the loss of battery capacity and extend the life of the IMD.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: July 18, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Goran N. Marnfeldt, Rafael Carbunaru, Jordi Parramon
  • Patent number: 9700730
    Abstract: Improved external chargers for charging an implantable medical device, and particularly useful in charging a plurality of such devices, are disclosed. Each of the various embodiments include a plurality of field customization coils for customizing the magnetic charging field generated by the external charger such that the magnetic charging field is not radially symmetric. For example, one embodiment includes a primary coil with a plurality of field customization coils distributed radially with respect to the coil. The generated magnetic charging field can be rendered radially asymmetric by selectively activating or disabling the field customization coils in response to data quantifying the coupling between the various implants and the field customization coils in the charger.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: July 11, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Rafael Carbunaru, Andrew DiGiore, Todd Whitehurst
  • Publication number: 20170189673
    Abstract: Architectures for implantable stimulators having N electrodes are disclosed. The architectures contains X current sources, or DACs. In a single anode/multiple cathode design, one of the electrodes is designated as the anode, and up to X of the electrodes can be designated as cathodes and independently controlled by one of the X DACs, allowing complex patient therapy and current steering between electrodes. The design uses at least X decoupling capacitors: X capacitors in the X cathode paths, or one in the anode path and X?1 in the X cathode paths. In a multiple anode/multiple cathode design having X DACs, a total of X?1 decoupling capacitors are needed. Because the number of DACs X can typically be much less than the total number of electrodes (N), these architectures minimize the number of decoupling capacitors which saves space, and ensures no DC current injection even during current steering.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 6, 2017
    Inventors: Jordi Parramon, Rafael Carbunaru
  • Publication number: 20170136246
    Abstract: A system for performing a neurostimulation trial comprises an external trial stimulator capable of delivering stimulation energy to a plurality of electrodes carried by one or more stimulation leads. The external trial stimulator is configurable to operate in a plurality of stimulation energy delivery modes to respectively emulate one of different neurostimulator types. The system may further comprise a programmer capable of configuring the external trial stimulator to operate in one of the stimulation energy delivery modes. The programmer may be capable of generating a first programming screen capable of allowing a first set of stimulation parameters to be defined for the first neurostimulator type, and a second programming screen capable of allowing a second set of stimulation parameters to be defined for a second neurostimulator type.
    Type: Application
    Filed: September 20, 2016
    Publication date: May 18, 2017
    Inventors: Todd K. Whitehurst, Rafael Carbunaru, Kristen Jaax, Andrew DiGiore, Brett D. Schleicher
  • Publication number: 20170120054
    Abstract: A computer implemented system and method generates a patient-specific model of patient response to stimulation on a neural element basis, receives user-input of target neuromodulation sites, and, based on the patient-specific model, determines which stimulation paradigm and settings, including stimulation sites, would result in the target neuromodulation, where the stimulation sites are not necessarily the same as the resulting neuromodulation sites. The system outputs a visual representation of the stimulation sites that would result in the target neuromodulation. The system monitors a system state and/or patient state and dynamically changes which stimulation program to implement based on the state.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Inventors: Michael A. Moffitt, Rafael Carbunaru
  • Patent number: 9604066
    Abstract: An implantable lead assembly for an electrical stimulation system includes a first lead configured for insertion into a patient. A current-limiting arrangement is coupleable with the first lead. The current-limiting arrangement is configured for limiting the amount of RF-induced current propagating along a body of the first lead during an MRI procedure. The current-liming arrangement includes a safety device configured to couple to the lead body when the lead body is implanted in the patient. The safety device defines a first port extending along a length of the safety device. The first port is configured for receiving a proximal end portion of the lead body and covering each of multiple terminals disposed along the lead body to prevent the terminals from contacting patient tissue. The safety device provides an impedance of at least 50 ohms at one or more MRI RF frequencies.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: March 28, 2017
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Rafael Carbunaru, Matthew Lee McDonald
  • Publication number: 20170080242
    Abstract: An example of a system for comparing neurostimulation waveforms can include a user interface configured to receive user input that at least partially defines a first neurostimulation waveform with at least one of differing pulses and differing pulse intervals, where the user input including at least one received parameter of the first neurostimulation waveform. The system can include a storage device configured to store at least one parameter of at least one second neurostimulation waveform, a comparator configured to compare the at least one received parameter of the first neurostimulation waveform to a corresponding at least one parameter of at least one second neurostimulation waveform stored in a memory, the user interface configured to generate and display to the user an indication of a similarity between the compared parameters.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 23, 2017
    Inventors: David Ernest Wechter, Rafael Carbunaru, Michael A. Moffitt