Patents by Inventor Christopher Petroff

Christopher Petroff 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: 12285240
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: October 19, 2022
    Date of Patent: April 29, 2025
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Patent number: 12274532
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: October 21, 2021
    Date of Patent: April 15, 2025
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Publication number: 20250082206
    Abstract: In part, the invention relates to methods, apparatus, and systems suitable for determining a fractional flow reserve (FFR) and variations of modifications thereof One embodiment relates to a method and apparatus for obtaining a corrected FFR in a vessel having a stenosis. In one aspect, the invention relates to an apparatus for measuring corrected FFR of a vessel having a stenosis. In one embodiment, the apparatus includes a probe comprising an optical coherence tomography assembly and a pressure assembly; and a processor in communication with the optical coherence tomography assembly and the pressure assembly. In one embodiment, the pressure assembly measures values of pressure in predetermined locations the vessel and communicates them to the processor. In one embodiment, a dual guidewire is used to reduce the interference in the pressure measurement.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Applicant: LightLab Imaging, Inc.
    Inventors: Christopher Petroff, Joseph M. Schmitt
  • Patent number: 12246162
    Abstract: A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.
    Type: Grant
    Filed: October 30, 2023
    Date of Patent: March 11, 2025
    Assignee: Becton, Dickinson and Company
    Inventors: Alessandro E. Pizzochero, J. Richard Gyory, Kenneth Focht, Justin Fisk, Joseph Gordon, Matthew Perry, Ajit D'Souza, Christopher Petroff
  • Patent number: 12232705
    Abstract: An imaging system is provided comprising an imaging probe and at least one delivery device. The imaging probe comprises an elongate shaft, a rotatable optical core and an optical assembly. The elongate shaft comprises a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. The rotatable optical core is positioned within the lumen of the elongate shaft and comprises a proximal end and a distal end. The rotatable optical core is configured to optically and mechanically connect with an interface unit. The optical assembly is positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end. The optical assembly is configured to direct light to tissue and collect reflected light from the tissue. The imaging probe is constructed and arranged to collect image data from a patient site. The at least one delivery device is constructed and arranged to slidingly engage the imaging probe.
    Type: Grant
    Filed: January 29, 2024
    Date of Patent: February 25, 2025
    Assignee: Spryte Medical, Inc.
    Inventors: Christopher Petroff, Christopher Petersen, David W. Kolstad
  • Patent number: 12193789
    Abstract: In part, the invention relates to methods, apparatus, and systems suitable for determining a fractional flow reserve (FFR) and variations of modifications thereof One embodiment relates to a method and apparatus for obtaining a corrected FFR in a vessel having a stenosis. In one aspect, the invention relates to an apparatus for measuring corrected FFR of a vessel having a stenosis. In one embodiment, the apparatus includes a probe comprising an optical coherence tomography assembly and a pressure assembly; and a processor in communication with the optical coherence tomography assembly and the pressure assembly. In one embodiment, the pressure assembly measures values of pressure in predetermined locations the vessel and communicates them to the processor. In one embodiment, a dual guidewire is used to reduce the interference in the pressure measurement.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: January 14, 2025
    Assignee: LightLab Imaging, Inc.
    Inventors: Christopher Petroff, Joseph M. Schmitt
  • Publication number: 20250000351
    Abstract: An imaging system is provided comprising an imaging probe and at least one delivery device. The imaging probe comprises an elongate shaft, a rotatable optical core and an optical assembly. The elongate shaft comprises a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. The rotatable optical core is positioned within the lumen of the elongate shaft and comprises a proximal end and a distal end. The rotatable optical core is configured to optically and mechanically connect with an interface unit. The optical assembly is positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end. The optical assembly is configured to direct light to tissue and collect reflected light from the tissue. The imaging probe is constructed and arranged to collect image data from a patient site. The at least one delivery device is constructed and arranged to slidingly engage the imaging probe.
    Type: Application
    Filed: January 29, 2024
    Publication date: January 2, 2025
    Inventors: Christopher PETROFF, Christopher PETERSEN, David W. KOLSTAD
  • Patent number: 12150738
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: November 30, 2023
    Date of Patent: November 26, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Patent number: 12150737
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimate blood flow rate, a number of clinically significant physiological parameters are then determine and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 26, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Patent number: 12138017
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: November 12, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Patent number: 12121325
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: October 22, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Patent number: 12082912
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: September 10, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Publication number: 20240177829
    Abstract: In part, the invention relates to a method for sizing a stent for placement in a vessel. In one embodiment, the method includes the steps of: dividing the vessel into a plurality of segments, each segment being defined as the space between branches of the vessel; selecting a starting point that appears to have substantially no disease; defining the diameter at this point to be the maximum diameter; calculating the maximal diameter of the next adjacent segment according to a power law; measuring the actual diameter of the next adjacent segment; selecting either the calculated maximum diameter or the measured maximum diameter depending upon which diameter is larger; using the selected maximum diameter to find the maximum diameter of this next segment; iteratively proceeding until the entire length of the vessel is examined; and selecting a stent in response to the diameters of the end proximal and distal segments.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Hiram Bezerra, Christopher Petroff, Ajay Gopinath
  • Publication number: 20240115141
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Application
    Filed: November 30, 2023
    Publication date: April 11, 2024
    Applicant: LightLab Imaging, Inc,
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Publication number: 20240099591
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Applicant: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Publication number: 20240099590
    Abstract: A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid the clinician in the placement of a stent. The system, in one embodiment, uses these measurements to allow the clinician to simulate the placement of a stent and to determine the effect of the placement. In addition, from these patient parameters various patient treatments are then performed.
    Type: Application
    Filed: November 29, 2023
    Publication date: March 28, 2024
    Applicant: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
  • Publication number: 20240099564
    Abstract: An imaging system for use in a patient is provided. The system includes an imaging probe, a rotation assembly, and a retraction assembly. The imaging probe collects image data from a patient site and includes an elongate shaft with a proximal end and a distal portion, with a lumen extending therebetween. A rotatable optical core is positioned within the elongate shaft lumen and an optical assembly is positioned in the elongate shaft distal portion. The optical assembly directs light to tissue at the patient site and collects reflected light from the tissue. The rotation assembly connects to the imaging probe and rotates the optical assembly. The retraction assembly connects to the imaging probe and retracts the optical assembly and the elongate shaft in unison.
    Type: Application
    Filed: May 8, 2023
    Publication date: March 28, 2024
    Inventors: Christopher Petroff, Michael Atlas, Christopher Petersen, Christopher Battles, Jiyuan Yin, Nareak Douk, David W. Kolstad, Giovanni Ughi, Lindsy Peterson, J. Christopher Flaherty, R. Maxwell Flaherty
  • Patent number: 11937786
    Abstract: An imaging system is provided comprising an imaging probe and at least one delivery device. The imaging probe comprises an elongate shaft, a rotatable optical core and an optical assembly. The elongate shaft comprises a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. The rotatable optical core is positioned within the lumen of the elongate shaft and comprises a proximal end and a distal end. The rotatable optical core is configured to optically and mechanically connect with an interface unit. The optical assembly is positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end. The optical assembly is configured to direct light to tissue and collect reflected light from the tissue. The imaging probe is constructed and arranged to collect image data from a patient site. The at least one delivery device is constructed and arranged to slidingly engage the imaging probe.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: March 26, 2024
    Assignee: Gentuity, LLC
    Inventors: Christopher Petroff, Christopher Petersen, David W. Kolstad
  • Patent number: 11923067
    Abstract: In part, the invention relates to a method for sizing a stent for placement in a vessel. In one embodiment, the method includes the steps of: dividing the vessel into a plurality of segments, each segment being defined as the space between branches of the vessel; selecting a starting point that appears to have substantially no disease; defining the diameter at this point to be the maximum diameter; calculating the maximal diameter of the next adjacent segment according to a power law; measuring the actual diameter of the next adjacent segment; selecting either the calculated maximum diameter or the measured maximum diameter depending upon which diameter is larger; using the selected maximum diameter to find the maximum diameter of this next segment; iteratively proceeding until the entire length of the vessel is examined; and selecting a stent in response to the diameters of the end proximal and distal segments.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 5, 2024
    Assignee: LightLab Imaging, Inc.
    Inventors: Joseph M. Schmitt, Hiram Bezerra, Christopher Petroff, Ajay Gopinath
  • Publication number: 20240058528
    Abstract: A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.
    Type: Application
    Filed: October 30, 2023
    Publication date: February 22, 2024
    Applicant: Becton, Dickinson and Company
    Inventors: Alessandro E. Pizzochero, J. Richard Gyory, Kenneth Focht, Justin Fisk, Joseph Gordon, Matthew Perry, Ajit D’Souza, Christopher Petroff