Patents by Inventor Kiyotake Ishikawa

Kiyotake Ishikawa 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: 20220273935
    Abstract: A system and method for determining native cardiac output of a heart while maintaining operation of an intracardiac blood pump includes determining a current drawn by the pump motor, a blood pressure within the ascending aorta, and a change in the blood temperature based on a thermodilution technique. An intracardiac blood pump positioned in the aorta includes at least one sensor for determining a motor current and blood pressure and a thermistor for determining the change in blood temperature after a precise fluid bolus has been introduced into the vasculature. A processor receives current, pressure, and temperature measurements, and calculates a pump flow output and a total cardiac output from which the native cardiac output is calculated. The native cardiac output and other clinically relevant variables derived from the measurements inform decisions related to continued therapeutic care, including increasing or decreasing cardiac assistance provided by the intracardiac pump.
    Type: Application
    Filed: February 16, 2022
    Publication date: September 1, 2022
    Applicants: ABIOMED, Inc., Icahn School of Medicine at Mount Sinai
    Inventors: Jerald Wayne Curran, Kiyotake Ishikawa, Roger J. Hajjar
  • Patent number: 11285310
    Abstract: A system and method for determining native cardiac output of a heart while maintaining operation of an intracardiac blood pump includes determining a current drawn by the pump motor, a blood pressure within the ascending aorta, and a change in the blood temperature based on a thermodilution technique. An intracardiac blood pump positioned in the aorta includes at least one sensor for determining a motor current and blood pressure and a thermistor for determining the change in blood temperature after a precise fluid bolus has been introduced into the vasculature. A processor receives current, pressure, and temperature measurements, and calculates a pump flow output and a total cardiac output from which the native cardiac output is calculated. The native cardiac output and other clinically relevant variables derived from the measurements inform decisions related to continued therapeutic care, including increasing or decreasing cardiac assistance provided by the intracardiac pump.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: March 29, 2022
    Assignees: Abiomed, Inc., Icahn School of Medicine at Mount Sinai
    Inventors: Jerald Wayne Curran, Kiyotake Ishikawa, Roger J. Hajjar
  • Publication number: 20200305888
    Abstract: Methods and systems for using mechanical circulatory support concurrently with a biologic therapy (e.g. a gene therapy vector). Particular adaptations include a cardiac therapy method in which a blood vessel such as a coronary artery or blood vessel is occluded, followed by injecting a gene therapy vector or biologic distal to the occlusion site and waiting a certain amount of time, while using the mechanical circulatory support system to provide circulatory support to the patient.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: ABIOMED, Inc.
    Inventors: Roger J. Hajjar, Kiyotake Ishikawa, Jerald Wayne Curran, Noam Josephy
  • Publication number: 20180280598
    Abstract: A system and method for determining native cardiac output of a heart while maintaining operation of an intracardiac blood pump includes determining a current drawn by the pump motor, a blood pressure within the ascending aorta, and a change in the blood temperature based on a thermodilution technique. An intracardiac blood pump positioned in the aorta includes at least one sensor for determining a motor current and blood pressure and a thermistor for determining the change in blood temperature after a precise fluid bolus has been introduced into the vasculature. A processor receives current, pressure, and temperature measurements, and calculates a pump flow output and a total cardiac output from which the native cardiac output is calculated. The native cardiac output and other clinically relevant variables derived from the measurements inform decisions related to continued therapeutic care, including increasing or decreasing cardiac assistance provided by the intracardiac pump.
    Type: Application
    Filed: March 21, 2018
    Publication date: October 4, 2018
    Inventors: Jerald Wayne Curran, Kiyotake Ishikawa, Roger J. Hajjar