Patents by Inventor Peter Dvorsky

Peter Dvorsky 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: 11564583
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: January 31, 2023
    Assignee: Stryker European Operations Limited
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Publication number: 20210169354
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Application
    Filed: November 16, 2020
    Publication date: June 10, 2021
    Applicant: Stryker European Operations Limited
    Inventors: Peter DVORSKY, David Mark Henri GOYETTE, T. Bruce FERGUSON, JR., Cheng CHEN
  • Patent number: 10835138
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 17, 2020
    Assignee: Stryker European Operations Limited
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Patent number: 10219742
    Abstract: A method and an apparatus for preoperative identification of a perforator vessel for plastic and/or reconstructive surgery using ICG fluorescence angiography imaging are disclosed. Time-resolved image processing is used to highlight perforator locations and to enable visual discrimination among candidate perforators by various computed metrics. Based on these metrics, the surgeon is able to interactively locate and select perforator vessels suitable for plastic and reconstructive surgery.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: March 5, 2019
    Assignee: NOVADAQ TECHNOLOGIES ULC
    Inventors: Peter Dvorsky, David Mark Henri Goyette
  • Publication number: 20180220907
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Application
    Filed: April 6, 2018
    Publication date: August 9, 2018
    Applicant: Novadaq Technologies ULC
    Inventors: Peter DVORSKY, David Mark Henri GOYETTE, T. Bruce FERGUSON, JR., Cheng CHEN
  • Patent number: 9936887
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 10, 2018
    Assignee: Novadaq Technologies ULC
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Publication number: 20180020933
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Application
    Filed: March 31, 2017
    Publication date: January 25, 2018
    Applicant: Novadaq Technologies Inc.
    Inventors: Peter DVORSKY, David Mark Henri GOYETTE, T. Bruce FERGUSON, JR., Cheng CHEN
  • Patent number: 9610021
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 4, 2017
    Assignee: Novadaq Technologies Inc.
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Publication number: 20150196208
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 16, 2015
    Inventors: Peter DVORSKY, David Mark Henri GOYETTE, T. Bruce FERGUSON, JR., Cheng CHEN
  • Patent number: 8965488
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: February 24, 2015
    Assignee: Novadaq Technologies Inc.
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Patent number: 8406860
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: March 26, 2013
    Assignee: Novadaq Technologies Inc.
    Inventors: Peter Dvorsky, David Mark Henri Goyette, T. Bruce Ferguson, Jr., Cheng Chen
  • Publication number: 20110306877
    Abstract: A method and an apparatus for preoperative identification of a perforator vessel for plastic and/or reconstructive surgery using ICG fluorescence angiography imaging are disclosed. Time-resolved image processing is used to highlight perforator locations and to enable visual discrimination among candidate perforators by various computed metrics. Based on these metrics, the surgeon is able to interactively locate and select perforator vessels suitable for plastic and reconstructive surgery.
    Type: Application
    Filed: September 20, 2010
    Publication date: December 15, 2011
    Applicant: NOVADAQ TECHNOLOGIES INC.
    Inventors: Peter Dvorsky, David Mark Henri Goyette
  • Publication number: 20100305454
    Abstract: Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (ROI) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the ROI. Vessel (arterial) peak intensity is determined from image elements located within the ROI that have the smallest contiguous range of highest measured image intensity values and contain a predefined fraction of a total measured image intensity of all image elements within the ROI. Cardiac function can be established by comparing the time differential between the time of peak intensity in a blood vessel and that in a region of neighboring myocardial tissue both pre and post procedure.
    Type: Application
    Filed: July 22, 2010
    Publication date: December 2, 2010
    Applicant: NOVADAQ TECHNOLOGIES INC.
    Inventors: Peter DVORSKY, David Mark Henri GOYETTE