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).
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Publication number: 20220142464Abstract: 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: ApplicationFiled: June 17, 2021Publication date: May 12, 2022Inventors: Christopher PETROFF, Christopher PETERSEN, David W. KOLSTAD
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Publication number: 20220095933Abstract: 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: ApplicationFiled: October 21, 2021Publication date: March 31, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Publication number: 20220095932Abstract: 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: ApplicationFiled: October 21, 2021Publication date: March 31, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Publication number: 20220095934Abstract: 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: ApplicationFiled: October 22, 2021Publication date: March 31, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Publication number: 20220087544Abstract: 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: ApplicationFiled: October 21, 2021Publication date: March 24, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Patent number: 11278206Abstract: An imaging system for a patient comprises an imaging probe. The imaging probe comprises: an elongate shaft for insertion into the patient and comprising a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion; a rotatable optical core comprising a proximal end and a distal end, the rotatable optical core configured to optically and mechanically connect with an interface unit; a probe connector positioned on the elongate shaft proximal end and surrounding at least a portion of the rotatable optical core and an optical assembly positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end, the optical assembly configured to direct light to tissue and collect reflected light from the tissue. A shear-thinning fluid can be provided between the elongate shaft and the rotatable optical core, such as to reduce undesired rotational variations of the rotatable optical core.Type: GrantFiled: April 15, 2016Date of Patent: March 22, 2022Assignee: Gentuity, LLCInventors: Christopher Petroff, Michael Atlas, David Kolstad, Christopher Petersen, Nareak Douk, J. Christopher Flaherty
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Publication number: 20220039667Abstract: 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: ApplicationFiled: October 22, 2021Publication date: February 10, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Publication number: 20220039668Abstract: 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: ApplicationFiled: October 22, 2021Publication date: February 10, 2022Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony
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Patent number: 11191892Abstract: 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: GrantFiled: March 31, 2020Date of Patent: December 7, 2021Assignee: Becton, Dickinson and CompanyInventors: Alessandro Pizzochero, J. Richard Gyory, Kenneth Focht, Justin Fisk, Joseph Gordon, Matthew Perry, Ajit D'Souza, Christopher Petroff
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Patent number: 11064873Abstract: 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: GrantFiled: March 17, 2020Date of Patent: July 20, 2021Assignee: GENTUITY, LLCInventors: Christopher Petroff, Christopher Petersen, David W. Kolstad
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Patent number: 11058308Abstract: An optical coherence tomography system and method with integrated pressure measurement. In one embodiment the system includes an interferometer including: a wavelength swept laser; a source arm in communication with the wavelength swept laser; a reference arm in communication with a reference reflector, a first photodetector having a signal output; a detector arm in communication with the first photodetector, a probe interlace; a sample arm in communication with a first optical connector of the probe interface; an acquisition and display system comprising: an A/D converter having a signal input in communication with the first photodetector signal output and a signal output; a processor system in communication with the A/D converter signal output; and a display in communication with the processor system; and a probe comprising a pressure sensor and configured for connection to the first optical connector of the probe interface, wherein the pressure transducer comprises an optical pressure transducer.Type: GrantFiled: November 30, 2018Date of Patent: July 13, 2021Assignee: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Christopher Petroff
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Patent number: 10967121Abstract: 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. The rotary pump includes a plunger and optional stopper formed from a two-shot molding process, and including seals overmolded onto the head of the plunger and the head of the optional stopper.Type: GrantFiled: July 25, 2019Date of Patent: April 6, 2021Assignee: BECTON, DICKINSON AND COMPANYInventors: Alessandro E. Pizzochero, J. Richard Gyory, Kenneth Focht, Justin Fisk, Joeseph Gordon, Matthew Perry, Ajit D'Souza, Christopher Petroff
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Publication number: 20210045622Abstract: 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: ApplicationFiled: March 17, 2020Publication date: February 18, 2021Inventors: Christopher PETROFF, Christopher PETERSEN, David W. KOLSTAD
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Publication number: 20200352446Abstract: 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: ApplicationFiled: July 23, 2020Publication date: November 12, 2020Applicant: LightLab Imaging, Inc.Inventors: Christopher Petroff, Joseph M. Schmitt
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Publication number: 20200288950Abstract: 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: ApplicationFiled: November 28, 2018Publication date: September 17, 2020Inventors: 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
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Publication number: 20200222626Abstract: 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: ApplicationFiled: March 31, 2020Publication date: July 16, 2020Applicant: Becton, Dickinson and CompanyInventors: Alessandro Pizzochero, Richard Gyory, Kenneth Focht, Justin Fisk, Joseph Gordon, Matthew Perry, Ajit D'Souza, Christopher Petroff
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Patent number: 10675404Abstract: 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: GrantFiled: July 31, 2018Date of Patent: June 9, 2020Assignee: BECTON, DICKINSON AND COMPANYInventors: Alessandro Pizzochero, J. Richard Gyory, Kenneth Focht, Justin Fisk, Joseph Gordon, Matthew Perry, Ajit D'Souza, Christopher Petroff
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Patent number: 10631718Abstract: 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 delivery device is constructed to engage the imaging probe.Type: GrantFiled: August 30, 2016Date of Patent: April 28, 2020Assignee: Gentuity, LLCInventors: Christopher Petroff, Christopher Petersen, David W. Kolstad
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Lumen Morphology and Vascular Resistance Measurements Data Collection Systems, Apparatus and Methods
Publication number: 20190380594Abstract: 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: ApplicationFiled: August 23, 2019Publication date: December 19, 2019Applicant: LIGHTLAB IMAGING, INC.Inventors: Joseph M. Schmitt, Joel M. Friedman, Christopher Petroff, Amr Elbasiony -
Publication number: 20190343409Abstract: An optical coherence tomography system and method with integrated pressure measurement. In one embodiment the system includes an interferometer including: a wavelength swept laser; a source arm in communication with the wavelength swept laser; a reference arm in communication with a reference reflector, a first photodetector having a signal output; a detector arm in communication with the first photodetector, a probe interlace; a sample arm in communication with a first optical connector of the probe interface; an acquisition and display system comprising: an A/D converter having a signal input in communication with the first photodetector signal output and a signal output; a processor system in communication with the A/D converter signal output; and a display in communication with the processor system; and a probe comprising a pressure sensor and configured for connection to the first optical connector of the probe interface, wherein the pressure transducer comprises an optical pressure transducer.Type: ApplicationFiled: November 30, 2018Publication date: November 14, 2019Applicant: LightLab Imaging, Inc.Inventors: Joseph M. Schmitt, Christopher Petroff