Patents by Inventor Arthur E. Bailey
Arthur E. Bailey 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: 20240000407Abstract: A method for visualizing tissue of a subject includes receiving a first series of first imaging modality frames generated by imaging a region of tissue of the subject, and a first series of second imaging modality frames generated by imaging the region of tissue; displaying the first series of first imaging modality frames in combination with the first series of second imaging modality frames; storing a plurality of first imaging modality frames and a plurality of second imaging modality frames of the first series of second imaging modality frames in a memory; receiving a second series of first imaging modality frames generated by imaging the region of tissue; and displaying the second series of first imaging modality frames in combination with one or more of the second imaging modality frames of the first series of second imaging modality frames stored in the memory for visualizing the region of tissue.Type: ApplicationFiled: May 26, 2023Publication date: January 4, 2024Applicant: Stryker CorporationInventors: Lina GUREVICH, Arthur E. BAILEY
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Publication number: 20230380708Abstract: A device for providing reference information in laser speckle medical imaging of tissue of a subject can include a support that includes a marker for image recognition and a speckle target region that is nontransparent to light in a first illumination wavelength range and that generates a speckle pattern when illuminated with light in the first wavelength range. The support can be configured to be attachable to tissue of the subject.Type: ApplicationFiled: May 26, 2023Publication date: November 30, 2023Applicant: Stryker European Operations LimitedInventors: Marc ANDRÉ, Arthur E. BAILEY
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Publication number: 20230355121Abstract: Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. The estimated molar concentration may be based on the predetermined amount of the fluorescence agent and an estimated circulating blood volume of the subject.Type: ApplicationFiled: July 17, 2023Publication date: November 9, 2023Applicant: Stryker European Operations LimitedInventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Patent number: 11701016Abstract: Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. The estimated molar concentration may be based on the predetermined amount of the fluorescence agent and an estimated circulating blood volume of the subject.Type: GrantFiled: May 11, 2020Date of Patent: July 18, 2023Assignee: Stryker European Operations LimitedInventors: Robert W. Flower, Robert Anthony Stead, Arthur E. Bailey
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Patent number: 11696695Abstract: A method and an apparatus for measuring a time-varying change in an amount of blood in a tissue include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain the measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent.Type: GrantFiled: September 30, 2019Date of Patent: July 11, 2023Assignee: Stryker European Operations LimitedInventors: Robert W. Flower, Robert Anthony Stead, Arthur E. Bailey
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Patent number: 11660011Abstract: A device for providing reference information in laser speckle medical imaging of tissue of a subject can include a support that includes a marker for image recognition and a speckle target region that is nontransparent to light in a first illumination wavelength range and that generates a speckle pattern when illuminated with light in the first wavelength range. The support can be configured to be attachable to tissue of the subject.Type: GrantFiled: December 30, 2020Date of Patent: May 30, 2023Assignee: Stryker European Operations LimitedInventors: Marc André, Arthur E. Bailey
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Patent number: 11660057Abstract: A method for visualizing tissue of a subject includes receiving a first series of first imaging modality frames generated by imaging a region of tissue of the subject, and a first series of second imaging modality frames generated by imaging the region of tissue; displaying the first series of first imaging modality frames in combination with the first series of second imaging modality frames; storing a plurality of first imaging modality frames and a plurality of second imaging modality frames of the first series of second imaging modality frames in a memory; receiving a second series of first imaging modality frames generated by imaging the region of tissue; and displaying the second series of first imaging modality frames in combination with one or more of the second imaging modality frames of the first series of second imaging modality frames stored in the memory for visualizing the region of tissue.Type: GrantFiled: July 10, 2020Date of Patent: May 30, 2023Assignee: Stryker CorporationInventors: Lina Gurevich, Arthur E. Bailey
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Publication number: 20220211258Abstract: A method of visualizing tissue of a subject includes receiving a fluorescence image of the tissue of the subject, wherein the fluorescence image comprises a plurality of intensity values, a first portion of the intensity values are associated with a first fluorescence emission that is from fluorescence agent that is preferentially accumulated or activated in a target region in the tissue and a second portion of the intensity values are associated with a second fluorescence emission that is from fluorescence agent that is not located within the target region in the tissue; generating an enhanced fluorescence image by reducing one or more of the intensity values that are below a threshold intensity value to increase contrast between the target region in the tissue and areas that are associated with the fluorescence agent that is not located within the target region in the tissue; and displaying the enhanced fluorescence image.Type: ApplicationFiled: December 23, 2021Publication date: July 7, 2022Applicant: Stryker CorporationInventors: Paul Roald WESTWICK, Xudong LU, Arthur E. BAILEY, John J.P. FENGLER
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Publication number: 20210201444Abstract: A device for providing reference information in laser speckle medical imaging of tissue of a subject can include a support that includes a marker for image recognition and a speckle target region that is nontransparent to light in a first illumination wavelength range and that generates a speckle pattern when illuminated with light in the first wavelength range. The support can be configured to be attachable to tissue of the subject.Type: ApplicationFiled: December 30, 2020Publication date: July 1, 2021Applicant: Novadaq Technologies ULCInventors: Marc ANDRÉ, Arthur E. BAILEY
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Publication number: 20210007687Abstract: A method for visualizing tissue of a subject includes receiving a first series of first imaging modality frames generated by imaging a region of tissue of the subject, and a first series of second imaging modality frames generated by imaging the region of tissue; displaying the first series of first imaging modality frames in combination with the first series of second imaging modality frames; storing a plurality of first imaging modality frames and a plurality of second imaging modality frames of the first series of second imaging modality frames in a memory; receiving a second series of first imaging modality frames generated by imaging the region of tissue; and displaying the second series of first imaging modality frames in combination with one or more of the second imaging modality frames of the first series of second imaging modality frames stored in the memory for visualizing the region of tissue.Type: ApplicationFiled: July 10, 2020Publication date: January 14, 2021Applicant: Novadaq Technologies ULCInventors: Lina GUREVICH, Arthur E. BAILEY
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Publication number: 20200405161Abstract: Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. The estimated molar concentration may be based on the predetermined amount of the fluorescence agent and an estimated circulating blood volume of the subject.Type: ApplicationFiled: May 11, 2020Publication date: December 31, 2020Applicant: Stryker European Operations LimitedInventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Publication number: 20200323439Abstract: A method, an apparatus, and a kit including the apparatus and a fluorescence agent are provided for measuring a time-varying change in an amount of blood in a tissue volume, and include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain a measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent. There is further provided a fluorescence agent for use in the method.Type: ApplicationFiled: April 27, 2020Publication date: October 15, 2020Applicant: Stryker European Operations LimitedInventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Patent number: 10646128Abstract: Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. The estimated molar concentration may be based on the predetermined amount of the fluorescence agent and an estimated circulating blood volume of the subject.Type: GrantFiled: February 15, 2017Date of Patent: May 12, 2020Assignee: Novadaq Technologies ULCInventors: Robert W. Flower, Robert Anthony Stead, Arthur E. Bailey
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Patent number: 10631746Abstract: A method, an apparatus, and a kit including the apparatus and a fluorescence agent are provided for measuring a time-varying change in an amount of blood in a tissue volume, and include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain a measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent. There is further provided a fluorescence agent for use in the method.Type: GrantFiled: October 9, 2014Date of Patent: April 28, 2020Assignee: Novadaq Technologies ULCInventors: Robert W. Flower, Robert Anthony Stead, Arthur E. Bailey
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Publication number: 20200100685Abstract: A method and an apparatus for measuring a time-varying change in an amount of blood in a tissue include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain the measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent.Type: ApplicationFiled: September 30, 2019Publication date: April 2, 2020Applicant: Novadaq Technologies ULCInventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Patent number: 10426361Abstract: A method and an apparatus for measuring a time-varying change in an amount of blood in a tissue include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain the measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent.Type: GrantFiled: October 9, 2014Date of Patent: October 1, 2019Assignee: NOVADAQ TECHNOLOGIES ULCInventors: Robert W. Flower, Robert Anthony Stead, Arthur E. Bailey
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Patent number: 10169862Abstract: Methods and systems for imaging tissue of a subject are disclosed, and involve illuminating the tissue with a coherent light having a coherent wavelength, acquiring image data of the tissue using a color image sensor, and processing the image data using laser speckle contrast analysis while correcting for differences in sensitivity of color pixels at the coherent wavelength to generate a perfusion image of the tissue. The perfusion image is then displayed to the user. Also disclosed are methods and systems for correcting for ambient light and for acquiring white light images along with laser speckle images.Type: GrantFiled: May 6, 2016Date of Patent: January 1, 2019Assignee: NOVADAQ TECHNOLOGIES ULCInventors: Marc André, Arthur E. Bailey, Paul Roald Westwick
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Publication number: 20170303800Abstract: A method, an apparatus, and a kit including the apparatus and a fluorescence agent are provided for measuring a time-varying change in an amount of blood in a tissue volume, and include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain a measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent. There is further provided a fluorescence agent for use in the method.Type: ApplicationFiled: October 9, 2014Publication date: October 26, 2017Applicant: Novadaq Technologies Inc.Inventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Publication number: 20170245766Abstract: Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. The estimated molar concentration may be based on the predetermined amount of the fluorescence agent and an estimated circulating blood volume of the subject.Type: ApplicationFiled: February 15, 2017Publication date: August 31, 2017Applicant: Novadaq Technologies Inc.Inventors: Robert W. FLOWER, Robert Anthony STEAD, Arthur E. BAILEY
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Publication number: 20160328848Abstract: Methods and systems for imaging tissue of a subject are disclosed, and involve illuminating the tissue with a coherent light having a coherent wavelength, acquiring image data of the tissue using a color image sensor, and processing the image data using laser speckle contrast analysis while correcting for differences in sensitivity of color pixels at the coherent wavelength to generate a perfusion image of the tissue. The perfusion image is then displayed to the user. Also disclosed are methods and systems for correcting for ambient light and for acquiring white light images along with laser speckle images.Type: ApplicationFiled: May 6, 2016Publication date: November 10, 2016Inventors: Marc ANDRÉ, Arthur E. BAILEY, Paul Roald WESTWICK