Patents by Inventor Catherine R. Condie

Catherine R. Condie 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: 10555768
    Abstract: Systems and methods to confirm safe delivery of treatment energy to a patient by identifying a presence of a fault in an energy delivery pathway and identifying a location of the fault within the device. The system includes a processing unit configured to calculate blood impedances external to the device based on known impedance characteristics of the device, and then to calculate impedances within the device during energy delivery based on the calculated blood impedances. The processing unit prevents the delivery of energy in an energy delivery pathway that is determined to be compromised. The processing unit is also configured to compare times for two different frequencies to travel a predetermined distance, the difference in the times corresponding to a location of a fault within the energy delivery pathway.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 11, 2020
    Assignee: Medtronic, Inc.
    Inventors: Steven J. Fraasch, Catherine R. Condie, Trenton J. Rehberger, Mark T. Stewart, Qin Zhang
  • Publication number: 20190365452
    Abstract: A cryoablation method, system, and device that allows for real-time and accurate assessment and monitoring of PV occlusion and lesion formation without the need for expensive imaging systems and without patient exposure to radiation. The system includes a cryoballoon catheter with a cryoballoon, a distal electrode, a proximal electrode, and a temperature sensor. Impedance measurements recorded by the electrodes may be used to predict ice formation, quality of pulmonary vein occlusion, and lesion formation.
    Type: Application
    Filed: July 19, 2019
    Publication date: December 5, 2019
    Inventors: Boaz AVITALL, Catherine R. CONDIE
  • Patent number: 10376299
    Abstract: A cryoablation method, system, and device that allows for real-time and accurate assessment and monitoring of PV occlusion and lesion formation without the need for expensive imaging systems and without patient exposure to radiation. The system includes a cryoballoon catheter with a cryoballoon, a distal electrode, a proximal electrode, and a temperature sensor. Impedance measurements recorded by the electrodes may be used to predict ice formation, quality of pulmonary vein occlusion, and lesion formation.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 13, 2019
    Assignee: Medtronic CryoCath LP
    Inventors: Boaz Avitall, Catherine R. Condie
  • Publication number: 20190216525
    Abstract: A method and system for mapping tissue and producing lesions for the treatment of cardiac arrhythmias in a non-thermal and optimal manner, minimizing the amount of energy required to selectively stun or ablate the target tissues. Energy may be delivered only at the moment(s) of best device position and proximity of an electrode to target tissue, and only during a time in the cardiac cycle determined to be optimal for reversible or irreversible effects. A method may include determining timing of the cardiac cycle and an optimal time within the cardiac cycle for energy delivery, evaluating proximity between at least one energy delivery electrode and the target tissue, and delivering pulsed field energy from the at least one energy delivery electrode to the target tissue when, during the optimal time for energy delivery, the at least one energy delivery electrode is in close proximity with the target tissue.
    Type: Application
    Filed: March 20, 2019
    Publication date: July 18, 2019
    Inventors: Mark T. STEWART, Catherine R. CONDIE, Jay L. KELLEY
  • Patent number: 10271893
    Abstract: A method and system for mapping tissue and producing lesions for the treatment of cardiac arrhythmias in a non-thermal and optimal manner, minimizing the amount of energy required to selectively stun or ablate the target tissues. Energy may be delivered only at the moment(s) of best device position and proximity of an electrode to target tissue, and only during a time in the cardiac cycle determined to be optimal for reversible or irreversible effects. A method may include determining timing of the cardiac cycle and an optimal time within the cardiac cycle for energy delivery, evaluating proximity between at least one energy delivery electrode and the target tissue, and delivering pulsed field energy from the at least one energy delivery electrode to the target tissue when, during the optimal time for energy delivery, the at least one energy delivery electrode is in close proximity with the target tissue.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 30, 2019
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Mark T. Stewart, Catherine R. Condie, Jay L. Kelley
  • Patent number: 10182742
    Abstract: A method and system for assessing electrode-tissue contact before the delivery of ablation energy. The system may include a control unit programmed to determine a difference between a maximum impedance magnitude at a low frequency for a given electrode and an absolute minimum impedance magnitude at the low frequency across all electrodes, determine a difference between a maximum impedance magnitude at a high frequency for a given electrode and an absolute minimum impedance magnitude at the high frequency across all electrodes, and determine a difference between a maximum impedance phase at the high frequency for a given electrode and an absolute minimum impedance phase at the high frequency across all electrodes. Differences may be correlated to one another using a linear model, the results determining electrode-tissue contact status. The results may be displayed in a graphical format for easy communication to the user.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 22, 2019
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Steven J. Fraasch, Marshall L. Sherman, Trenton Jay Rehberger, Corinne Weyrauch
  • Patent number: 10166071
    Abstract: A method of assessing a tissue ablation treatment, including positioning a medical device adjacent a target tissue; measuring a first impedance magnitude a first frequency with the medical device; measuring a first impedance phase at a second frequency with the medical device; ablating at least a portion of the target tissue with the medical device; measuring at second impedance magnitude at a third frequency with the medical device; measuring a second impedance phase at a fourth frequency with the medical device; comparing at least one of (i) the first and second impedance magnitudes and (ii) the first and second impedance phases; and providing an indication of the efficacy of the ablation treatment based at least in part on the comparison.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: January 1, 2019
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Marshall L. Sherman, Catherine R. Condie, Mark T. Stewart
  • Patent number: 10143399
    Abstract: A method and system for assessing electrode-tissue contact before the delivery of ablation energy. The method may generally include determining a difference between a maximum impedance magnitude at a low frequency for a given electrode and an absolute minimum impedance magnitude at the low frequency across all electrodes, determining a difference between a maximum impedance magnitude at a high frequency for a given electrode and an absolute minimum impedance magnitude at the high frequency across all electrodes, and determining a difference between a maximum impedance phase at the high frequency for a given electrode and an absolute minimum impedance phase at the high frequency across all electrodes. These differences may be correlated to one another using a linear model, the results of which determining whether the given electrode is in contact or not in contact with tissue.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: December 4, 2018
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Marshall L. Sherman, Corinne Weyrauch, Steven J. Fraasch, Trento Jay Rehberger
  • Publication number: 20180228528
    Abstract: Systems and methods to confirm safe delivery of treatment energy to a patient by identifying a presence of a fault in an energy delivery pathway and identifying a location of the fault within the device. The system includes a processing unit configured to calculate blood impedances external to the device based on known impedance characteristics of the device, and then to calculate impedances within the device during energy delivery based on the calculated blood impedances. The processing unit prevents the delivery of energy in an energy delivery pathway that is determined to be compromised. The processing unit is also configured to compare times for two different frequencies to travel a predetermined distance, the difference in the times corresponding to a location of a fault within the energy delivery pathway.
    Type: Application
    Filed: February 14, 2017
    Publication date: August 16, 2018
    Inventors: Steven J. FRAASCH, Catherine R. CONDIE, Trenton J. REHBERGER, Mark T. STEWART, Qin ZHANG
  • Publication number: 20180214195
    Abstract: A system and method for the safe delivery of treatment energy to a patient, which includes verification of system integrity before, during, or after the delivery of treatment energy and provides several mechanisms for rapid termination of the delivery of potentially harmful energy to the patient when a fault condition in the device and/or system is identified. The system may include an energy generator having processing circuitry to determine if there is a fault condition in the system and to automatically terminate a delivery of treatment energy when the processing circuitry determines there is a fault condition. The method may generally include performing a series of pre-checks, synchronizing a treatment energy delivery to the proper segment of the heart's depolarization pattern, configuring the system for treatment energy delivery, delivering the treatment energy, and performing post-treatment evaluation.
    Type: Application
    Filed: January 27, 2017
    Publication date: August 2, 2018
    Inventors: Steven J. FRAASCH, Catherine R. CONDIE, Brian T. HOWARD, Louis JACOB, Paul S. LAM, Trenton J. REHBERGER, Mark T. STEWART, Qin ZHANG
  • Patent number: 9993279
    Abstract: A cryoablation method, system, and device that allows for real-time and accurate assessment and monitoring of PV occlusion and lesion formation without the need for expensive imaging systems and without patient exposure to radiation. The system includes a cryoballoon catheter with a cryoballoon, a distal electrode, a proximal electrode, and a temperature sensor. Impedance measurements recorded by the electrodes may be used to predict ice formation, quality of pulmonary vein occlusion, and lesion formation.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: June 12, 2018
    Assignee: Medtronic CryoCath LP
    Inventors: Boaz Avitall, Catherine R. Condie
  • Publication number: 20170354449
    Abstract: A cryoablation method, system, and device that allows for real-time and accurate assessment and monitoring of PV occlusion and lesion formation without the need for expensive imaging systems and without patient exposure to radiation. The system includes a cryoballoon catheter with a cryoballoon, a distal electrode, a proximal electrode, and a temperature sensor. Impedance measurements recorded by the electrodes may be used to predict ice formation, quality of pulmonary vein occlusion, and lesion formation.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: Boaz AVITALL, Catherine R. CONDIE
  • Patent number: 9814523
    Abstract: A method of ablating an epicardial tissue region, including positioning a medical device adjacent the epicardial tissue region, the medical device having a first electrode, a second electrode, and a third electrode located in between the first and second electrodes; delivering an irrigation fluid to the tissue region; and ablating at least a portion of the tissue region by sequentially activating the third electrode in a monopolar radiofrequency delivery mode and activating the first and second electrodes in a bipolar radiofrequency delivery mode.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: November 14, 2017
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Sarah E. Ahlberg
  • Patent number: 9750570
    Abstract: Systems and methods for assessing tissue contact, including positioning a plurality of electrodes adjacent a tissue region; delivering radiofrequency energy to the plurality of electrodes, wherein the delivered radiofrequency energy is sufficient to ablate at least a portion of the tissue region; obtaining a plurality of impedance measurements from the plurality of electrodes during the delivery of the radiofrequency energy; calculating a change in the impedance measurements for each of the plurality of electrodes over a pre-determined time period; comparing the calculated change for at least one of the plurality of electrodes to the calculated change in at least one other of the plurality of electrode to determine if there is significant variation in the calculated changes; and terminating the delivery of radiofrequency energy to at least one of the plurality if there is significant variation in the calculated changes.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: September 5, 2017
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Marshall L. Sherman, Mark T. Stewart
  • Publication number: 20170095290
    Abstract: Methods and systems for combining ablation therapy with navigation of the ablation device. An ablation system may be configured for use with one of two methods to prevent loss of navigation signals during ablation energy delivery. In the first method, ablation energy signals are filtered from the navigation signal. In the second method, the delivery of ablation energy is sequenced with the delivery of navigation energy such that ablation energy and navigation energy are not delivered at the same time and navigation signals received by the system are time-division multiplexed to reconstruct the navigation signals and determine a location of the device within the patient.
    Type: Application
    Filed: September 27, 2016
    Publication date: April 6, 2017
    Inventors: Marshall L. SHERMAN, Catherine R. CONDIE, Trenton J. REHBERGER, Steven J. FRAASCH, Mark T. STEWART
  • Patent number: 9532828
    Abstract: A medical method, device, and system are provided, including advancing an ablation element of a medical device into contact with tissue to be treated, selecting a power level of energy to ablate the tissue, delivering energy at the selected power level to the ablation element, determining whether the ablation element is in continuous contact with the tissue, and reducing the selected power level when the ablation element ceases to be in continuous contact with the tissue.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: January 3, 2017
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Marshall L. Sherman, Kathryn E. Kasischke, Timothy J. Corvi, Aaron R. Strunk
  • Patent number: 9504518
    Abstract: A medical method, device, and system are provided, including advancing an ablation element of a medical device into contact with tissue to be treated, selecting a power level of energy to ablate the tissue, delivering energy at the selected power level to the ablation element, determining whether the ablation element is in continuous contact with the tissue, and reducing the selected power level when the ablation element ceases to be in continuous contact with the tissue.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 29, 2016
    Assignee: Medtronic Ablation Frontiers LLC
    Inventors: Catherine R. Condie, Marshall L. Sherman, Kathryn E. Kasischke, Timothy J. Corvi, Aaron R. Strunk
  • Publication number: 20160287137
    Abstract: A method and system for assessing electrode-tissue contact before the delivery of ablation energy. The method may generally include determining a difference between a maximum impedance magnitude at a low frequency for a given electrode and an absolute minimum impedance magnitude at the low frequency across all electrodes, determining a difference between a maximum impedance magnitude at a high frequency for a given electrode and an absolute minimum impedance magnitude at the high frequency across all electrodes, and determining a difference between a maximum impedance phase at the high frequency for a given electrode and an absolute minimum impedance phase at the high frequency across all electrodes. These differences may be correlated to one another using a linear model, the results of which determining whether the given electrode is in contact or not in contact with tissue.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 6, 2016
    Inventors: Catherine R. CONDIE, Marshall L. Sherman, Corinne WEYRAUCH, Steven J. FRAASCH, Trenton Jay REHBERGER
  • Publication number: 20160287136
    Abstract: A method and system for assessing electrode-tissue contact before the delivery of ablation energy. The system may include a control unit programmed to determine a difference between a maximum impedance magnitude at a low frequency for a given electrode and an absolute minimum impedance magnitude at the low frequency across all electrodes, determine a difference between a maximum impedance magnitude at a high frequency for a given electrode and an absolute minimum impedance magnitude at the high frequency across all electrodes, and determine a difference between a maximum impedance phase at the high frequency for a given electrode and an absolute minimum impedance phase at the high frequency across all electrodes. Differences may be correlated to one another using a linear model, the results determining electrode-tissue contact status. The results may be displayed in a graphical format for easy communication to the user.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 6, 2016
    Inventors: Catherine R. CONDIE, Steven J. FRAASCH, Marshall L. Sherman, Trenton Jay REHBERGER, Corinne WEYRAUCH
  • Publication number: 20160166310
    Abstract: A method and system for mapping tissue and producing lesions for the treatment of cardiac arrhythmias in a non-thermal and optimal manner, minimizing the amount of energy required to selectively stun or ablate the target tissues. Energy may be delivered only at the moment(s) of best device position and proximity of an electrode to target tissue, and only during a time in the cardiac cycle determined to be optimal for reversible or irreversible effects. A method may include determining timing of the cardiac cycle and an optimal time within the cardiac cycle for energy delivery, evaluating proximity between at least one energy delivery electrode and the target tissue, and delivering pulsed field energy from the at least one energy delivery electrode to the target tissue when, during the optimal time for energy delivery, the at least one energy delivery electrode is in close proximity with the target tissue.
    Type: Application
    Filed: March 20, 2015
    Publication date: June 16, 2016
    Inventors: Mark T. STEWART, Catherine R. CONDIE, Jay L. KELLEY