Patents by Inventor John C. Tesar
John C. Tesar 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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Patent number: 10231608Abstract: An illumination system for variable direction of view instruments is disclosed generally comprising an endoscope having a longitudinal axis and a variable view vector that pivots about a pivot axis angularly offset from the longitudinal axis. The view vector has an attendant viewing field that travels along a path as the view vector pivots, defining a viewing range. A source of illumination is arranged in a plane offset from the plane in which the view vector pivots and provides an annular, solid angle of illumination that covers the viewing range. In certain embodiments, the pivot axis is perpendicular to the longitudinal axis and the illumination plane is parallel to the pivot plane. In some embodiments, the source of illumination is a plurality of light emitting diodes arranged around the pivot axis.Type: GrantFiled: October 13, 2010Date of Patent: March 19, 2019Assignee: KARL STORZ ImagingInventors: Hans David Hoeg, Eric L. Hale, Nathan Jon Schara, John C. Tesar
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Publication number: 20180168455Abstract: The application discloses endoscopes and wands, light sources, and other inventions useful for near infrared imaging, particularly for medical purposes. It discloses endoscope or wand devices (260) having transmitting members that transmit between about 95% and 99.9% of the energy at a wavelength within the infrared spectrum. It also discloses wands and endoscopes having at least one channel for transmitting and receiving light in the visible spectrum and at least one channel for transmitting and receiving light in the infrared spectrum.Type: ApplicationFiled: December 15, 2017Publication date: June 21, 2018Applicant: Novadaq Technologies Inc.Inventor: John C. TESAR
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Patent number: 9877654Abstract: Endoscopes and wands, useful for near infrared imaging, particularly for medical purposes, have transmitting members that transmit between about 95% and 99.5% of the energy at a wavelength within the infrared spectrum. The wands and endoscopes have at least one channel for transmitting and receiving light in the visible spectrum and at least one channel for transmitting and receiving light in the infrared spectrum.Type: GrantFiled: August 14, 2012Date of Patent: January 30, 2018Assignee: NOVADAQ TECHNOLOGIES INC.Inventor: John C. Tesar
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Patent number: 9182577Abstract: A viewing instrument having a variable direction of view is disclosed generally comprising a shaft, a sensor mounted in the distal end of the shaft such that the image plane of the sensor is substantially parallel to the longitudinal axis of the shaft, and a reflecting element that rotates about an axis substantially perpendicular to the longitudinal axis of the shaft. In some embodiments, a negative lens is mounted adjacent the reflecting element, and in certain embodiments, a positive lens is positioned adjacent the image sensor.Type: GrantFiled: January 20, 2006Date of Patent: November 10, 2015Assignee: Karl Storz Imaging, Inc.Inventors: Hans David Hoeg, John C. Tesar, Nathan Jon Schara, Eric L. Hale
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Patent number: 8773756Abstract: An optical system, in particular for endoscopic applications, is disclosed which uses wavelength-compensating optical components, in particular prisms, made of materials with different inter-element coatings and refractive indices to image significantly different wavelength-ranges (VIS and NIR) onto the same image plane of an image acquisition device, such as a CCD sensor.Type: GrantFiled: October 6, 2009Date of Patent: July 8, 2014Assignee: Novadaq Technologies Inc.Inventors: John C. Tesar, Paul Cottle, John J. P. Fengler
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Publication number: 20130184591Abstract: Endoscopes and wands, useful for near infrared imaging, particularly for medical purposes, have transmitting members that transmit between about 95% and 99.9% of the energy at a wavelength within the infrared spectrum. The wands and endoscopes have at least one channel for transmitting and receiving light in the visible spectrum and at least one channel for transmitting and receiving light in the infrared spectrum.Type: ApplicationFiled: August 14, 2012Publication date: July 18, 2013Inventor: John C. TESAR
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Publication number: 20110249323Abstract: An optical system, in particular for endoscopic applications, is disclosed which uses wavelength-compensating optical components, in particular prisms, made of materials with different inter-element coatings and refractive indices to image significantly different wavelength-ranges (VIS and NIR) onto the same image plane of an image acquisition device, such as a CCD sensor.Type: ApplicationFiled: October 6, 2009Publication date: October 13, 2011Applicant: NOVADAQ TECHNOLOGIES INC.Inventors: John C. Tesar, Paul Cottle, John J.P. Fengler
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Patent number: 7918559Abstract: The invention provides an apparatus, a device, and methods for imaging vasculature in a subject as well as an apparatus, a device and methods for treating abnormal vasculature in a subject.Type: GrantFiled: May 1, 2006Date of Patent: April 5, 2011Assignee: NOVADAQ Technologies Inc.Inventor: John C. Tesar
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Patent number: 7909756Abstract: A illumination system for variable direction of view instruments is disclosed generally comprising an endoscope having a longitudinal axis and a variable view vector that pivots about a pivot axis angularly offset from the longitudinal axis. The view vector has an attendant viewing field that travels along a path as the view vector pivots, defining a viewing range. A source of illumination is arranged in a plane offset from the plane in which the view vector pivots and provides an annular, solid angle of illumination that covers the viewing range. In certain embodiments, the pivot axis is perpendicular to the longitudinal axis and the illumination plane is parallel to the pivot plane. In some embodiments, the source of illumination is a plurality of light emitting diodes arranged around the pivot axis.Type: GrantFiled: January 25, 2006Date of Patent: March 22, 2011Assignee: Karl Storz Imaging, Inc.Inventors: Hans David Hoeg, Eric L. Hale, Nathan Jon Schara, John C. Tesar
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Publication number: 20110046447Abstract: An illumination system for variable direction of view instruments is disclosed generally comprising an endoscope having a longitudinal axis and a variable view vector that pivots about a pivot axis angularly offset from the longitudinal axis. The view vector has an attendant viewing field that travels along a path as the view vector pivots, defining a viewing range. A source of illumination is arranged in a plane offset from the plane in which the view vector pivots and provides an annular, solid angle of illumination that covers the viewing range. In certain embodiments, the pivot axis is perpendicular to the longitudinal axis and the illumination plane is parallel to the pivot plane. In some embodiments, the source of illumination is a plurality of light emitting diodes arranged around the pivot axis.Type: ApplicationFiled: October 13, 2010Publication date: February 24, 2011Inventors: Hans David Hoeg, Eric L. Hale, Nathan Jon Schara, John C. Tesar
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Publication number: 20090303317Abstract: An endoscope or wand device comprising transmitting members, in which the transmitting members comprise a coating that transmits between about 95% and about 99.5% of energy at a wavelength within the infra red spectrum.Type: ApplicationFiled: February 7, 2007Publication date: December 10, 2009Applicant: Novadaq Technologies Inc.Inventor: John C. Tesar
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Publication number: 20080291397Abstract: The invention provides an apparatus, a device, and methods for imaging vasculature in a subject as well as an apparatus, a device and methods for treating abnormal vasculature in a subject.Type: ApplicationFiled: May 1, 2006Publication date: November 27, 2008Applicant: Novadaq Technologies Inc.Inventor: John C. Tesar
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Patent number: 7221522Abstract: A optical system for a viewing instrument with a variable direction of view is disclosed generally comprising shaft, first and second reflectors located at the distal end of the shaft, where the first reflector rotates about an axis angularly offset from the longitudinal axis of the shaft, and an entrance pupil positioned in the optical path created by the reflectors and preceding the reflecting surface of the second reflector. In certain embodiments, the entrance pupil comprises an aperture stop positioned between the first and second reflectors. In some embodiments, the system includes negative and positive lenses located adjacent the entrance and exit faces of the first reflector.Type: GrantFiled: January 27, 2006Date of Patent: May 22, 2007Assignee: Karl Storz Development Corp.Inventors: John C. Tesar, Eric L. Hale, Nathan Jon Schara, Hans David Hoeg