Patents by Inventor James H. Orszulak

James H. Orszulak 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: 10413347
    Abstract: A radio-frequency (RF) amplifier having a direct response to an arbitrary signal source to output one or more electrosurgical waveforms within an energy activation request, is disclosed. The RF amplifier includes a phase compensator coupled to an RF arbitrary source, the phase compensator configured to generate a reference signal as a function of an arbitrary RF signal from the RF arbitrary source and a phase control signal; at least one error correction amplifier coupled to the phase compensator, the at least one error correction amplifier configured to output a control signal at least as a function of the reference signal; and at least one power component coupled to the at least one error correction amplifier and to a high voltage power source configured to supply high voltage direct current thereto, the at least one power component configured to operate in response to the control signal to generate at least one component of the at least one electrosurgical waveform.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: September 17, 2019
    Assignee: COVIDIEN LP
    Inventor: James H. Orszulak
  • Publication number: 20180325591
    Abstract: A connector assembly is provided. The connector assembly includes a housing having a first end that includes one or more mechanical interfaces thereon. The at least one mechanical interface configured to selectively engage a corresponding mechanical interface on an electrosurgical generator. A second end is configured to selectively engage an end of an electrosurgical cable to couple the electrosurgical generator to an electrosurgical instrument. A plurality of splines extends along an interior of the housing and is configured for electrical communication with a plurality of corresponding electrical conductors of the electrosurgical cable.
    Type: Application
    Filed: July 23, 2018
    Publication date: November 15, 2018
    Inventors: JASON M. MUCILLI, JAMES H. ORSZULAK
  • Patent number: 10028786
    Abstract: A connector assembly is provided. The connector assembly includes a housing having a first end that includes one or more mechanical interfaces thereon. The at least one mechanical interface configured to selectively engage a corresponding mechanical interface on an electrosurgical generator. A second end is configured to selectively engage an end of an electrosurgical cable to couple the electrosurgical generator to an electrosurgical instrument. A plurality of splines extends along an interior of the housing and is configured for electrical communication with a plurality of corresponding electrical conductors of the electrosurgical cable.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: July 24, 2018
    Assignee: COVIDIEN LP
    Inventors: Jason M. Mucilli, James H. Orszulak
  • Patent number: 9768373
    Abstract: A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device. An output control circuit receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal, and generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal. A compensated drive circuit receives and processes the compensated clock signal for generating the divider reference signal, and for generating the driver output signal.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: September 19, 2017
    Assignee: Covidien AG
    Inventors: James H. Orszulak, James W. McPherson
  • Publication number: 20170238988
    Abstract: An electro-thermal apparatus configured to treat tissue includes an electrosurgical cable configured to couple to an electrosurgical energy source. The electrosurgical cable includes supply and return lines that are wound in a double helix arrangement around a dielectric insulator within the electrosurgical cable. An electro-thermal element is provided at a distal end of the electrosurgical cable. The electro-thermal element is in electrical communication with the supply and return lines via corresponding first and second conductive traces. The first and second conductive traces have a patterned geometry and resistivity configured to convert electrical energy provided by the supply and return lines to thermal energy for treating tissue.
    Type: Application
    Filed: May 9, 2017
    Publication date: August 24, 2017
    Inventor: JAMES H. ORSZULAK
  • Patent number: 9739814
    Abstract: A system and method that improves and automates the measurement of power generated by an electrosurgical generator. An active load device is coupled to the generator output and is configured to simulate the change in tissue characteristics, such as an impedance change, that occurs when such tissue undergoes electrosurgical treatment. The active load faithfully simulates the change in tissue characteristics caused by a particular mode of electrosurgical energy delivery, such as without limitation, changes caused in response to a cutting mode, a coagulation mode, a blending mode, a sealing mode, and the like. Tests are conducted in accordance with test profiles containing target impedance and power values of the test scenario. A plurality of profiles may be stored for testing under various simulated operating conditions.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: August 22, 2017
    Assignee: COVIDIEN LP
    Inventors: James H. Orszulak, Steven E. McGraw
  • Patent number: 9693816
    Abstract: An electrosurgical system is disclosed. The system includes an electrosurgical instrument having at least one electrode configured as a first sensor for measuring a voltage drop therethrough and a temperature sensor for a thermal sensor configured to measure a temperature difference across the at least one electrode; and a generator including an output stage coupled to the at least one electrode, the output stage configured to generate radio frequency energy; and a controller configured to determine actual radio frequency current based on the voltage drop and electrical resistivity of the at least one electrode and radio frequency power based on the measured temperature difference and the thermal conductivity of the at least one electrode.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: July 4, 2017
    Assignee: COVIDIEN LP
    Inventor: James H. Orszulak
  • Patent number: 9649146
    Abstract: An electro-thermal apparatus configured to treat tissue is provided. The electro-thermal apparatus including an electrosurgical cable configured to couple to an electrosurgical energy source. The electrosurgical cable includes supply and return lines that are wound in a double helix arrangement around a dielectric insulator within the electrosurgical cable. An electro-thermal element is provided at a distal end of the electrosurgical cable. The electro-thermal element is in electrical communication with the supply and return lines via corresponding first and second conductive traces. The first and second conductive traces have a patterned geometry and resistivity configured to convert electrical energy provided by the supply and return lines to thermal energy for treating tissue.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 16, 2017
    Assignee: COVIDIEN LP
    Inventor: James H. Orszulak
  • Publication number: 20170027633
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.
    Type: Application
    Filed: October 11, 2016
    Publication date: February 2, 2017
    Inventors: ROBERT H. WHAM, STEVEN P. BUYSSE, JAMES H. ORSZULAK
  • Publication number: 20170000555
    Abstract: A surgical instrument includes one or more electrically-conductive plates adapted to connect to a source of energy for supplying energy to tissue to treat tissue, a temperature sensing element, and a thermal spread control assembly coupled to the temperature sensing element. The thermal spread control assembly is configured to determine a flow rate of heat energy across the temperature sensing element and to control the energy applied to the electrically-conductive plate and/or control active cooling of the temperature sensing element in accordance with the determined flow rate of heat energy.
    Type: Application
    Filed: September 12, 2016
    Publication date: January 5, 2017
    Inventors: JAMES H. ORSZULAK, J. BRUCE DUNNE
  • Publication number: 20160305990
    Abstract: A system and method that improves and automates the measurement of power generated by an electrosurgical generator. An active load device is coupled to the generator output and is configured to simulate the change in tissue characteristics, such as an impedance change, that occurs when such tissue undergoes electrosurgical treatment. The active load faithfully simulates the change in tissue characteristics caused by a particular mode of electrosurgical energy delivery, such as without limitation, changes caused in response to a cutting mode, a coagulation mode, a blending mode, a sealing mode, and the like. Tests are conducted in accordance with test profiles containing target impedance and power values of the test scenario. A plurality of profiles may be stored for testing under various simulated operating conditions.
    Type: Application
    Filed: June 22, 2016
    Publication date: October 20, 2016
    Inventors: James H. ORSZULAK, Steven E. MCGRAW
  • Patent number: 9463067
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: October 11, 2016
    Assignee: COVIDIEN AG
    Inventors: Robert H. Wham, Steven P. Buysse, James H. Orszulak
  • Patent number: 9439717
    Abstract: A surgical instrument includes one or more electrically-conductive plates adapted to connect to a source of energy for supplying energy to tissue to treat tissue, a temperature sensing element, and a thermal spread control assembly coupled to the temperature sensing element. The thermal spread control assembly is configured to determine a flow rate of heat energy across the temperature sensing element and to control the energy applied to the electrically-conductive plate and/or control active cooling of the temperature sensing element in accordance with the determined flow rate of heat energy.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: September 13, 2016
    Assignee: COVIDIEN LP
    Inventors: James H. Orszulak, J. Bruce Dunne
  • Patent number: 9375271
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: June 28, 2016
    Assignee: COVIDIEN AG
    Inventors: Robert H. Wham, Steven P. Buysse, James H. Orszulak
  • Patent number: 9375244
    Abstract: An electrosurgical system includes a generator that generates electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to tissue and are operatively connected to one or more supply lines. The generator also includes one or more return output terminals which return energy from the tissue and are operatively connected to at least one return line. The system also includes an electrosurgical instrument operatively connected to the one or more supply lines and one or more return electrodes operatively connected to the one or more return lines. The system further includes an electrosurgical cable including one or more supply lines and one or more return lines, which are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: June 28, 2016
    Assignee: COVIDIEN AG
    Inventor: James H. Orszulak
  • Patent number: 9375270
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: June 28, 2016
    Assignee: COVIDIEN AG
    Inventors: Robert H. Wham, Steven P. Buysse, James H. Orszulak
  • Patent number: 9375247
    Abstract: A system and method that improves and automates the measurement of power generated by an electrosurgical generator. An active load device is coupled to the generator output and is configured to simulate the change in tissue characteristics, such as an impedance change, that occurs when such tissue undergoes electrosurgical treatment. The active load faithfully simulates the change in tissue characteristics caused by a particular mode of electrosurgical energy delivery, such as without limitation, changes caused in response to a cutting mode, a coagulation mode, a blending mode, a sealing mode, and the like. Tests are conducted in accordance with test profiles containing target impedance and power values of the test scenario. A plurality of profiles may be stored for testing under various simulated operating conditions.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: June 28, 2016
    Assignee: Covidien LP
    Inventors: James H. Orszulak, Steven E. McGraw
  • Patent number: 9186201
    Abstract: A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal generated by the power supply and a feedback signal generated in response to the application of energy to tissue. A discharge circuit is configured to control the discharge of the output of the power supply to an inductive load disposed in parallel with the output of the power supply based on the comparison between the output signal and the feedback signal. The discharge circuit provides a rapid response and time rate control of the delivered electrosurgical energy by controlling the power supply and delivered RF energy in real time, based on a feedback signal generated in response to the application of energy to tissue.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: November 17, 2015
    Assignee: Covidien LP
    Inventor: James H. Orszulak
  • Patent number: 9113888
    Abstract: A method for performing an electrosurgical procedure at a surgical site on a patient, the method including the steps of providing a current restricting circuit operatively coupled between a source of electro surgical energy and an electrode, the current restricting circuit including: a switch configured to direct the flow of electrosurgical energy; and a plurality of current restrictive devices arranged in an H-Bridge arrangement, wherein the switch is disposed between adjacent current restrictive devices of the plurality of current restrictive devices; restricting the flow of electrosurgical energy wherein the current restricting circuit is configured to restrict a flow of electrosurgical energy when the switch is in a first position; enabling the flow of electrosurgical energy when the switch is in a second position; and dynamically controlling the electrosurgical energy delivered to the electrode with the current restricting circuit.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: August 25, 2015
    Assignee: Covidien AG
    Inventors: James H. Orszulak, James W. McPherson
  • Publication number: 20150223864
    Abstract: A radio-frequency (RF) amplifier having a direct response to an arbitrary signal source to output one or more electrosurgical waveforms within an energy activation request, is disclosed. The RF amplifier includes a phase compensator coupled to an RF arbitrary source, the phase compensator configured to generate a reference signal as a function of an arbitrary RF signal from the RF arbitrary source and a phase control signal; at least one error correction amplifier coupled to the phase compensator, the at least one error correction amplifier configured to output a control signal at least as a function of the reference signal; and at least one power component coupled to the at least one error correction amplifier and to a high voltage power source configured to supply high voltage direct current thereto, the at least one power component configured to operate in response to the control signal to generate at least one component of the at least one electrosurgical waveform.
    Type: Application
    Filed: April 21, 2015
    Publication date: August 13, 2015
    Inventor: JAMES H. ORSZULAK