Patents by Inventor Tommy D. Bennett

Tommy D. Bennett 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: 10835133
    Abstract: A method for monitoring a cardiovascular pressure in a patient may include storing, in a memory of an implantable medical device system and in association with each one or more different patient postures, a respective offset value for the cardiovascular pressure of the patient. The one or more offset values may be determined based on a distance between an implantable pressure sensing device and an anatomical structure of the patient, a location of the implantable pressure sensing device within the patient, or one or more dimensions an anatomical structure of the patient. The method further includes determining a measured value of the cardiovascular pressure and a posture of the patient when the value of the cardiovascular pressure was measured, selecting a stored offset value associated with the current patient posture, and determining an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: November 17, 2020
    Assignee: Medtronic, Inc.
    Inventors: Mary M. Morris, Ruth N. Klepfer, Tommy D. Bennett
  • Publication number: 20190336076
    Abstract: In some examples, determining a heart failure status includes using an implantable medical device configured for subcutaneous implantation and comprising a plurality of electrodes and an optical sensor. Processing circuitry of a system comprising the device may determine, for a patient, a current tissue oxygen saturation value based on a signal received from the at least one optical sensor, a current tissue impedance value based on a subcutaneous tissue impedance signal received from the electrodes, and a current pulse transit time value based on a cardiac electrogram signal received from the electrodes and at least one of the signal received from the optical sensor and the subcutaneous tissue impedance signal. The processing circuitry may further compare the current tissue oxygen saturation value, current tissue impedance value, and current pulse transit time value to corresponding baseline values, and determine the heart failure status of the patient based on the comparison.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 7, 2019
    Inventors: Jonathan L. Kuhn, James K. Carney, Vinod Sharma, Shantanu Sarkar, Todd M. Zielinski, Tommy D. Bennett
  • Patent number: 10213115
    Abstract: The present disclosure provides an apparatus and method of detecting ischemia with a pressure sensor. The method can include obtaining a pressure signal and determining a pressure rate of change. The method can also include identifying at least one of impaired relaxation and impaired contractility in order to detect ischemia.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: February 26, 2019
    Assignee: Medtronic, Inc.
    Inventors: Sarah A Audet, James K Carney, William J Combs, Tommy D Bennett, Barbro M. L. Kjellstrom
  • Publication number: 20180168461
    Abstract: A method for monitoring a cardiovascular pressure in a patient may include storing, in a memory of an implantable medical device system and in association with each one or more different patient postures, a respective offset value for the cardiovascular pressure of the patient. The one or more offset values may be determined based on a distance between an implantable pressure sensing device and an anatomical structure of the patient, a location of the implantable pressure sensing device within the patient, or one or more dimensions an anatomical structure of the patient. The method further includes determining a measured value of the cardiovascular pressure and a posture of the patient when the value of the cardiovascular pressure was measured, selecting a stored offset value associated with the current patient posture, and determining an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 21, 2018
    Inventors: Mary M. Morris, Ruth N. Klepfer, Tommy D. Bennett
  • Patent number: 9943236
    Abstract: An implantable medical device system and associated method for use in guiding an acute decompensated heart failure therapy set an optimal fluid status measurement level. A physiological sensor signal sensed by an implantable medical device is used to compute the fluid status measurement. A target rate of change of the fluid status measurement is computed for guiding the therapy.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: April 17, 2018
    Assignee: Medtronic, Inc.
    Inventors: Tommy D. Bennett, Yong K. Cho
  • Patent number: 9943633
    Abstract: A medical device system including a physiological sensor and ultrafiltration unit senses a physiological signal in a patient and computes a fluid status measurement of the patient using the physiological signal. Ultrafiltration therapy is delivered to the patient according to a therapy delivery control parameter established in response to the fluid status measurement.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: April 17, 2018
    Assignee: Medtronic Inc.
    Inventors: Daniel C. Sigg, Sarah Anne Audet, Tommy D. Bennett, Dwight H. Warkentin
  • Publication number: 20170245794
    Abstract: Methods and systems for seamless adjustment of treatment are disclosed. A determination is made as to whether to intervene with a patient's treatment. Implanted device memory data is acquired over a pre-specified time period. Risk status is determined from the device memory data. Another external device memory data is acquired over a pre-specified time period. A determination is made as to whether to adjust treatment of the patient in response to the risk status, the data acquired from the implanted device memory and the external device memory data.
    Type: Application
    Filed: January 10, 2017
    Publication date: August 31, 2017
    Inventors: Vinod Sharma, Eduardo N. Warman, Shantanu Sarkar, Tommy D. Bennett, Lindsay M. Streeter, Jennifer K. Bravinder
  • Publication number: 20160331884
    Abstract: A medical device system including a physiological sensor and ultrafiltration unit senses a physiological signal in a patient and computes a fluid status measurement of the patient using the physiological signal. Ultrafiltration therapy is delivered to the patient according to a therapy delivery control parameter established in response to the fluid status measurement.
    Type: Application
    Filed: June 23, 2016
    Publication date: November 17, 2016
    Inventors: Daniel C. SIGG, Sarah Anne AUDET, Tommy D. BENNETT, Dwight H. WARKENTIN
  • Publication number: 20160213265
    Abstract: The present disclosure provides an apparatus and method of detecting ischemia with a pressure sensor. The method can include obtaining a pressure signal and determining a pressure rate of change. The method can also include identifying at least one of impaired relaxation and impaired contractility in order to detect ischemia.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Inventors: Sarah A. Audet, James K. Carney, William J. Combs, Tommy D. Bennett, Barbro M.L. Kjellstrom
  • Patent number: 9399091
    Abstract: A medical device system including a physiological sensor and ultrafiltration unit senses a physiological signal in a patient and computes a fluid status measurement of the patient using the physiological signal. Ultrafiltration therapy is delivered to the patient according to a therapy delivery control parameter established in response to the fluid status measurement.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: July 26, 2016
    Assignee: Medtronic, Inc.
    Inventors: Daniel C. Sigg, Sarah Anne Audet, Tommy D. Bennett, Dwight H. Warkentin
  • Patent number: 9301698
    Abstract: The present disclosure provides an apparatus and method of detecting ischemia with a pressure sensor. The method can include obtaining a pressure signal and determining a pressure rate of change. The method can also include identifying at least one of impaired relaxation and impaired contractility in order to detect ischemia.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: April 5, 2016
    Assignee: Medtronic, Inc.
    Inventors: Sarah A. Audet, James K. Carney, William J. Combs, Tommy D. Bennett, Barbro M. L. Kjellstrom
  • Patent number: 8827913
    Abstract: An example system may include at least one pressure sensor configured to measure a cardiovascular pressure signal and another medical device configured to measure an electrical depolarization signal of the heart. The system determines a plurality of cardiovascular pressure metrics based on the measured cardiovascular pressure signal, including at least one cardiovascular pressure metric indicative of a timing of at least one cardiac pulse. The system also determines a metric indicative of a timing of at least one heart depolarization within the measured electrical depolarization signal. The system compares the timing of the at least one cardiac pulse to the timing of the at least one depolarization, and determines whether to discard the plurality of cardiovascular pressure metrics based on whether the timings substantially agree.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: September 9, 2014
    Assignee: Medtronic, Inc.
    Inventors: William J. Havel, Tommy D. Bennett, Yong Kyun Cho, Robert T. Taepke, II
  • Patent number: 8777850
    Abstract: An implantable medical device system and method provide physiological variable monitoring for use in patient management. A target value for a physiological variable and formulations for computing metrics of the physiological variable are stored. Values of the physiological variable are determined from a sensed physiological signal and are used to compute a selected metric. The metric is compared to the stored target value.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: July 15, 2014
    Assignee: Medtronic, Inc.
    Inventors: Yong K. Cho, Ven R. Manda, Brandon S. Sparks, Tommy D. Bennett
  • Patent number: 8702604
    Abstract: A medical device system including a physiological sensor is configured to perform a method for detecting signal artifact in a signal waveform acquired by the sensor. A signal waveform is sensed in a patient using the physiological sensor and a fiducial point associated with the sensed waveform is identified. A point value is established using the fiducial point. Signal artifact is detected in response to the established point value and an established threshold, and at least a portion of the signal waveform is rejected in response to detecting signal artifact.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 22, 2014
    Assignee: Medtronic, Inc.
    Inventors: Mustafa Karamanoglu, Karen J. Kleckner, Tommy D. Bennett
  • Patent number: 8594790
    Abstract: A medical device monitors a patient to predict worsening heart failure. An input circuit of the medical device receives a pressure signal representative of a pressure sensed within a ventricle of the patient's heart as a function of time. A processor derives from the pressure signal a ventricular pressure index for a ventricular contraction based upon pressures in the ventricle. The processor then provides an output based upon the ventricular pressure index.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: November 26, 2013
    Assignee: Medtronic, Inc.
    Inventors: Barbro M. Kjellstrom, Tommy D. Bennett
  • Patent number: 8585604
    Abstract: A therapy regimen, e.g., a contingent medication prescription, may be created and automatically distributed to a patient via an integrated patient care system. A clinician may create therapy instructions by at least associating patient conditions with one or more therapy regimens, e.g., medication prescriptions. In some examples, the integrated patient care system may present historical condition data to the clinician to aid the clinician with creating and/or updating the therapy instructions specific to the patient. A therapy module of the integrated patient care system may use the therapy instructions to automatically select a therapy regimen from the therapy instructions based on a patient condition detected based on a sensed physiological parameter. The physiological parameter of the patient may be sensed by an implanted or external sensor. In some examples, the therapy regimen can be presented to the patient according to a predetermined schedule or in response to the detected condition.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: November 19, 2013
    Assignee: Medtronic, Inc.
    Inventors: Tommy D. Bennett, Yong Kyun Cho, Randolph M. Biallas
  • Patent number: 8554315
    Abstract: Apparatus using one or more modes of statistical analysis with one or more monitored parameters of a patient's heart to identify and/or assess arrhythmias. Through use of the one or more modes of statistical analysis, a medical professional can be aided during evaluation of patient data for diagnosis of the patient. At least one of the monitored parameters may include one or more values used representatively for storage intervals of a selected length. As such, for each storage interval, a value may be determined for the one monitored parameter occurring at an upper percentile and a lower percentile. In addition, a median value may be determined for the one monitored parameter for each storage interval. Over a plurality of the storage intervals, these determined values can be used in one or more modes of statistical analysis to better identify and assess the arrhythmias.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: October 8, 2013
    Assignee: Medtronic, Inc.
    Inventors: Yong K. Cho, Tommy D. Bennett, Barbro M. Kjellstrom, Susan C. Vadnais
  • Patent number: 8483833
    Abstract: A method includes controlling a cardiac pacing rate of an implantable medical device to control a heart rate of a patient and detecting inhalation and exhalation of the patient. The method further includes determining that the patient is in a resting state, and, in response to determining that the patient is in the resting state, incrementally increasing the pacing rate while exhalation of the patient is detected and incrementally decreasing the pacing rate while inhalation of the patient is detected.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: July 9, 2013
    Assignee: Medtronic, Inc.
    Inventors: Yong Kyun Cho, Mark K. Erickson, Tommy D. Bennett
  • Patent number: 8467870
    Abstract: A method includes controlling a cardiac pacing rate of an implantable medical device (IMD) to control a heart rate of a patient and determining that the patient is in a resting state. The method further includes modifying the pacing rate of the IMD for N cardiac cycles in response to determining that the patient is in the resting state. N is an integer greater than 1. Modifying the pacing rate includes incrementally increasing the pacing rate for a first portion of the N cardiac cycles, and incrementally decreasing the pacing rate for a second portion of the N cardiac cycles.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: June 18, 2013
    Assignee: Medtronic, Inc.
    Inventors: Yong Kyun Cho, Mark K. Erickson, Tommy D. Bennett
  • Publication number: 20130085399
    Abstract: Techniques for controlling therapy based on a physiological parameter indicative of ventricular filling pressure, such as various cardiovascular pressures, are described. One or more values of the physiological parameter that are collected during nighttime, or while the patient is otherwise asleep, inactive, or within a recumbent position, may be compared to one or more values of the physiological parameter collected during daytime, or while the patient is otherwise awake, active and/or upright. A therapy, such as for treating physiological factors that may lead to worsening HF, may be initiated or adjusted based on the comparison, e.g., if the nighttime values exceed the daytime values.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: Medtronic, Inc.
    Inventors: Tommy D. Bennett, Yong K. Cho