Patents by Inventor Jason S. Chan
Jason S. Chan 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: 11291484Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: GrantFiled: June 13, 2019Date of Patent: April 5, 2022Assignee: DePuy Synthes Products, Inc.Inventors: Jason S. Chan, Alberto A. Fernandez
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Patent number: 10932836Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: GrantFiled: December 18, 2018Date of Patent: March 2, 2021Assignee: DePuy Synthes Products, Inc.Inventors: William N. Woodburn, Jason S. Chan, Mark P. Grady, Robert J. Schoutens
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Publication number: 20190290340Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: ApplicationFiled: June 13, 2019Publication date: September 26, 2019Inventors: Jason S. Chan, Alberto A. Fernandez
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Patent number: 10335211Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: GrantFiled: March 18, 2016Date of Patent: July 2, 2019Assignee: DePuy Synthes Products, Inc.Inventors: Jason S. Chan, Alberto A. Fernandez
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Publication number: 20190117284Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: ApplicationFiled: December 18, 2018Publication date: April 25, 2019Inventors: William N. Woodburn, Jason S. Chan, Mark P. Grady, Robert J. Schoutens
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Patent number: 10188439Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: GrantFiled: December 22, 2015Date of Patent: January 29, 2019Assignee: DePuy Synthes Products, Inc.Inventors: William N. Woodburn, Jason S. Chan, Mark P. Grady, Robert J. Schoutens
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Patent number: 10166054Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: GrantFiled: July 7, 2014Date of Patent: January 1, 2019Assignee: DePuy Synthes Products, Inc.Inventors: William N. Woodburn, Sr., Jason S. Chan, Mark P. Grady, Jr.
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Publication number: 20160192968Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: ApplicationFiled: March 18, 2016Publication date: July 7, 2016Inventors: Jason S. Chan, Alberto A. Fernandez
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Patent number: 9351773Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.Type: GrantFiled: May 7, 2014Date of Patent: May 31, 2016Assignee: DEPUY SYNTHES PRODUCTS, INC.Inventors: Scott R. DiDomenico, Jason S. Chan, Jeff W. Mast, Keith A. Mayo, Brett B. Bolhofner
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Publication number: 20160106485Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: ApplicationFiled: December 22, 2015Publication date: April 21, 2016Inventors: William N. Woodburn, Jason S. Chan, Mark P. Grady, Robert J. Schoutens
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Patent number: 9314284Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: GrantFiled: October 17, 2013Date of Patent: April 19, 2016Assignee: DePuy Synthes Products, Inc.Inventors: Jason S. Chan, Alberto A. Fernandez
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Publication number: 20150018829Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.Type: ApplicationFiled: July 7, 2014Publication date: January 15, 2015Inventors: William N. Woodburn, SR., Jason S. Chan, Mark P. Grady, JR.
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Publication number: 20140243903Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.Type: ApplicationFiled: May 7, 2014Publication date: August 28, 2014Applicant: DePuy Synthes Products, LLCInventors: Scott R. DIDOMENICO, Jason S. CHAN, Jeff W. MAST, Keith A. MAYO, Brett B. BOLHOFNER
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Publication number: 20140180345Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: ApplicationFiled: October 17, 2013Publication date: June 26, 2014Inventors: Jason S. Chan, Alberto A. Fernandez
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Patent number: 8753348Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.Type: GrantFiled: July 2, 2004Date of Patent: June 17, 2014Assignee: Depuy Synthes Products, LLCInventors: Scott R. DiDomenico, Jason S. Chan, Jeff W. Mast, Keith A. Mayo, Brett B. Bolhofner
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Patent number: 8574268Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: GrantFiled: January 9, 2008Date of Patent: November 5, 2013Assignee: DePuy Synthes Product, LLCInventors: Jason S. Chan, Alberto Angel Fernandez
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Publication number: 20080140130Abstract: A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.Type: ApplicationFiled: January 9, 2008Publication date: June 12, 2008Inventors: Jason S. Chan, Alberto Angel Fernandez
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Patent number: D685089Type: GrantFiled: October 11, 2012Date of Patent: June 25, 2013Assignee: DePuy Synthes Products, LLCInventors: Michael J. Yaremchuk, Eric Lui, Jason S. Chan