Patents by Inventor Keith Durand
Keith Durand 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: 11988381Abstract: Apparatus and methods for debinding articles. The apparatus and methods may transform binder from furnace exhaust before the exhaust is discharged to the atmosphere. The apparatus may include a furnace retort and a reactor. The furnace retort may be configured to: exclude ambient air; and receive a carrier gas. The reactor may be configured to: receive from the retort (a) the carrier gas and (b) material removed in the retort from the article; and combust, at a temperature no greater than 750° C., the material. The material may be decomposed binder. The material may be hydrocarbon from binder that is pyrolyzed in the retort. The carrier gas may include gas that is nonflammable gas.Type: GrantFiled: June 10, 2020Date of Patent: May 21, 2024Assignee: Markforged, Inc.Inventors: Michelle Chao, Keith Durand, Rick Bryan Woodruff, Benjamin Hodsdon Gallup
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Patent number: 11918503Abstract: A structure includes a first frame having a shape to fit around, or over, a body part, the first frame further comprising a first surface configured to dock with a docking surface of a second frame configured to receive and support the body part. The structure also includes a material attached to the first frame for fitting to the body part; and at least one attachment mechanism coupled to the first frame and configured to attach the first frame to the second frame when the first surface of the first frame is docked with the docking surface of the second frame, wherein the at least one attachment mechanism is configured to flex or pivot, relative to a lateral edge of the first frame, to attach the first frame to the second frame when the first surface of the first frame is docked with the docking surface of the second frame.Type: GrantFiled: March 25, 2019Date of Patent: March 5, 2024Assignee: MEDTEC LLCInventors: Gregory Nephi Nordgren, William Louis Barnat, Renaud Durand, Keith Van Voorst
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Patent number: 11065036Abstract: An instrument port for introducing instruments into a surgical site, including a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and fluid flow for removing emboli efficiently from the instrument port, wherein the fluid flow includes the gap is provided. A fluid flow system for use in an instrument port is provided. A method of removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: GrantFiled: September 18, 2015Date of Patent: July 20, 2021Assignees: Children's Medical Center Corporation, Massachusetts Institute of TechnologyInventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro J. del Nido, Nikolay V. Vasilyev
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Publication number: 20200393126Abstract: Apparatus and methods for debinding articles. The apparatus and methods may transform binder from furnace exhaust before the exhaust is discharged to the atmosphere. The apparatus may include a furnace retort and a reactor. The furnace retort may be configured to: exclude ambient air; and receive a carrier gas. The reactor may be configured to: receive from the retort (a) the carrier gas and (b) material removed in the retort from the article; and combust, at a temperature no greater than 750° C., the material. The material may be decomposed binder. The material may be hydrocarbon from binder that is pyrolyzed in the retort. The carrier gas may include gas that is nonflammable gas.Type: ApplicationFiled: June 10, 2020Publication date: December 17, 2020Inventors: Michelle Chao, Keith Durand, Rick Bryan Woodruff, Benjamin Hodsdon Gallup
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Patent number: 9844394Abstract: The instrument ports for introducing instruments into a surgical site that are disclosed herein include a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and a fluid flow element for removing emboli efficiently from the instrument port, wherein the fluid flow element includes the gap. Disclosed fluid flow systems are for use in the disclosed instrument ports. Methods are also disclosed for removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: GrantFiled: March 11, 2013Date of Patent: December 19, 2017Assignees: Children's Medical Center Corporation, Massachusetts Institute of TechnologyInventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro J. del Nido, Nikolay V. Vasilyev
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Patent number: 9539762Abstract: A three dimensional printer incorporates a kinematic coupling between the build platform and movable stage which holds the build platform, of three curved protrusions attached to one of the build platform or the movable stage and six locating features formed in receivers of the other. At least two flexures differentially change a Z position of each of two of the curved protrusions. 3D printing is paused at a preset level of completion, and the build platform may be removed for external operations. A print resume circuit resumes printing of additional printed layers at the previous position in response to a return detection circuit that responds to an input (e.g., a touch screen confirmation).Type: GrantFiled: January 26, 2015Date of Patent: January 10, 2017Assignee: MARKFORGED, INC.Inventors: Keith Durand, Rick Bryan Woodruff, Gregory Thomas Mark
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Publication number: 20160000463Abstract: An instrument port for introducing instruments into a surgical site, including a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and fluid flow for removing emboli efficiently from the instrument port, wherein the fluid flow includes the gap is provided. A fluid flow system for use in an instrument port is provided. A method of removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: ApplicationFiled: September 18, 2015Publication date: January 7, 2016Inventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro J. del Nido, Nikolay V. Vasilyev
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Publication number: 20150210007Abstract: A three dimensional printer incorporates a kinematic coupling between the build platform and movable stage which holds the build platform, of three curved protrusions attached to one of the build platform or the movable stage and six locating features formed in receivers of the other. At least two flexures differentially change a Z position of each of two of the curved protrusions. 3D printing is paused at a preset level of completion, and the build platform may be removed for external operations. A print resume circuit resumes printing of additional printed layers at the previous position in response to a return detection circuit that responds to an input (e.g., a touch screen confirmation).Type: ApplicationFiled: January 26, 2015Publication date: July 30, 2015Applicant: MarkForged, Inc.Inventors: Keith DURAND, Rick Bryan WOODRUFF, Gregory Thomas MARK
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Publication number: 20130261400Abstract: The instrument ports for introducing instruments into a surgical site that are disclosed herein include a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and a fluid flow element for removing emboli efficiently from the instrument port, wherein the fluid flow element includes the gap. Disclosed fluid flow systems are for use in the disclosed instrument ports. Methods are also disclosed for removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: ApplicationFiled: March 11, 2013Publication date: October 3, 2013Inventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro J. del Nido, Nikolay V. Vasilyev
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Patent number: 8394015Abstract: An instrument port for introducing instruments into a surgical site, including a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and fluid flow for removing emboli efficiently from the instrument port, wherein the fluid flow includes the gap is provided. A fluid flow system for use in an instrument port is provided. A method of removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: GrantFiled: January 5, 2007Date of Patent: March 12, 2013Assignees: Children's Medical Center Corporation, Massachusetts Institute of TechnologyInventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro J. Del Nido, Nikolay V. Vasilyev
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Publication number: 20090275893Abstract: An instrument port for introducing instruments into a surgical site, including a port body having a channel running therethrough from a proximal end to a distal end, an instrument sleeve in slidable contact with the channel, creating a gap therebetween, and fluid flow for removing emboli efficiently from the instrument port, wherein the fluid flow includes the gap is provided. A fluid flow system for use in an instrument port is provided. A method of removably securing an instrument sleeve to a port body by anchoring the instrument port to heart tissue, making at least one flood line in a channel, flushing out emboli, and performing surgery with the instrument port.Type: ApplicationFiled: January 5, 2007Publication date: November 5, 2009Inventors: Christopher DiBiasio, Keith Durand, Jonathan Brigham Hopkins, Zach Traina, Alexander Slocum, Samir Nayfeh, Pedro de Nido