Patents by Inventor Nicholas Nai Guang Dong
Nicholas Nai Guang Dong 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: 20230346562Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: ApplicationFiled: June 29, 2023Publication date: November 2, 2023Applicants: Howmedica Osteonics Corp., The University Of LiverpoolInventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joseph Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Patent number: 11759323Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: GrantFiled: February 28, 2020Date of Patent: September 19, 2023Assignees: Howmedica Osteonics Corp., The University Of LiverpoolInventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joseph Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Publication number: 20230132015Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: ApplicationFiled: December 22, 2022Publication date: April 27, 2023Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Patent number: 11564801Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: GrantFiled: June 3, 2019Date of Patent: January 31, 2023Assignee: Howmedica Osteonics Corp.Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Publication number: 20200202043Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: ApplicationFiled: February 28, 2020Publication date: June 25, 2020Inventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joseph Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Patent number: 10614176Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: GrantFiled: October 7, 2015Date of Patent: April 7, 2020Assignees: Howmedica Osteonics Corp., The University Of LiverpoolInventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joe Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Publication number: 20190314160Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: ApplicationFiled: June 3, 2019Publication date: October 17, 2019Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Publication number: 20180200066Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: ApplicationFiled: March 16, 2018Publication date: July 19, 2018Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Patent number: 9949837Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: GrantFiled: March 7, 2013Date of Patent: April 24, 2018Assignee: Howmedica Osteonics Corp.Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Patent number: 9757242Abstract: A tibial implant system has an ultra-high molecular weight polyethylene tibial insert which can engage with either one of two tibial trays through differing means of engagement. The tibial insert includes a locking wire and locking tab disposed along an anterior surface and a locking recess disposed along a posterior surface. A first polymeric tibial tray includes a bead along an anterior wall and an undercut area along a posterior wall. A second metallic tibial tray includes a plurality of barbs along an anterior wall and an undercut area along a posterior wall.Type: GrantFiled: March 11, 2013Date of Patent: September 12, 2017Assignee: Howmedica Osteonics Corp.Inventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Walter Schmidt
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Publication number: 20160098495Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: ApplicationFiled: October 7, 2015Publication date: April 7, 2016Inventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joe Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Patent number: 9180010Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: GrantFiled: September 14, 2012Date of Patent: November 10, 2015Assignees: Howmedica Osteonics Corp., The University Of LiverpoolInventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joe Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Patent number: 8900303Abstract: A method of reinforcing the bone in an acetabulum for receiving a prosthetic acetabular implant includes preparing a surface of the acetabulum to receive an acetabular implant. At least one porous generally cylindrical bone reinforcement element is provided. At least one bore is drilled in an area of the acetabulum receiving the prosthetic acetabular implant for receiving at least one and preferably more reinforcement elements in the form of cylindrical pilings. The cylindrical porous bone reinforcement element is inserted in the bore such that an exposed surface of the porous bone reinforcement element is adjacent the surface of the acetabulum. The acetabular implant is then implanted with an outer surface of the acetabular implant supported by the reinforcement members.Type: GrantFiled: July 9, 2012Date of Patent: December 2, 2014Assignee: Howmedica Osteonics Corp.Inventors: Matthew P. Poggie, Anthony K. Hedley, Nicholas Nai Guang Dong
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Publication number: 20140257504Abstract: A tibial implant system has an ultra-high molecular weight polyethylene tibial insert which can engage with either one of two tibial trays through differing means of engagement. The tibial insert includes a locking wire and locking tab disposed along an anterior surface and a locking recess disposed along a posterior surface. A first polymeric tibial tray includes a bead along an anterior wall and an undercut area along a posterior wall. A second metallic tibial tray includes a plurality of barbs along an anterior wall and an undercut area along a posterior wall.Type: ApplicationFiled: March 11, 2013Publication date: September 11, 2014Applicant: HOWMEDICA OSTEONICS CORP.Inventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Walter Schmidt
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Publication number: 20140257507Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicant: HOWMEDICA OSTEONICS CORP.Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
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Publication number: 20140012390Abstract: A method of reinforcing the bone in an acetabulum for receiving a prosthetic acetabular implant includes preparing a surface of the acetabulum to receive an acetabular implant. At least one porous generally cylindrical bone reinforcement element is provided. At least one bore is drilled in an area of the acetabulum receiving the prosthetic acetabular implant for receiving at least one and preferably more reinforcement elements in the form of cylindrical pilings. The cylindrical porous bone reinforcement element is inserted in the bore such that an exposed surface of the porous bone reinforcement element is adjacent the surface of the acetabulum. The acetabular implant is then implanted with an outer surface of the acetabular implant supported by the reinforcement members.Type: ApplicationFiled: July 9, 2012Publication date: January 9, 2014Applicant: HOWMEDICA OSTEONICS CORP.Inventors: Matthew P. Poggie, Anthony K. Hedley, Nicholas Nai Guang Dong
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Publication number: 20130268085Abstract: Aspects of the present disclosure relate generally to preparing models of three-dimensional structures. In particular, a model of a three-dimensional structure constructed of porous geometries is prepared. A component file including a porous CAD volume having a boundary is prepared. A space including the porous CAD volume is populated with unit cells. The unit cells are populated with porous geometries having a plurality of struts having nodes on each end. The space is populated with at least one elongated fixation element extending beyond the boundary to produce an interlocking feature enabling assembly or engagement with a mating structure.Type: ApplicationFiled: September 14, 2012Publication date: October 10, 2013Applicants: THE UNIVERSITY OF LIVERPOOL, Howmedica Osteonics Corp.Inventors: Nicholas Nai Guang Dong, Matthew P. Poggie, Robert W. Klein, Eric Jones, Christopher J. Sutcliffe, Joe Robinson, Dan Jones, Lewis Mullen, Robin Stamp
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Patent number: 7740795Abstract: The invention relates to implantable medical devices, particularly, to porous structures for such devices. In one aspect, the invention provides a porous metal scaffold comprising a porous metal network having pores defined by metal webs, the metal webs covered with at least one layer of metal particles bonded to the metal webs. In other aspects, the invention provides methods of forming porous scaffolds. In one such aspect, the method includes providing a polymer foam; forming a skin of biocompatible metal on the polymer foam by low temperature arc vapor deposition; and heating the polymer foam and the metal skin above the decomposition temperature of the polymer foam in an inert gas atmosphere; thereby the polymer foam decomposes producing a green metal foam. In yet other aspects, the invention provides methods of improving stability of porous scaffolds.Type: GrantFiled: July 12, 2005Date of Patent: June 22, 2010Assignee: Howmedica Osteonics Corp.Inventors: Kathy K. Wang, Nicholas Nai Guang Dong, Michael Meehan
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Patent number: 7648524Abstract: An anchor for fixing a ligament or tendon replacement in a bore formed in a bone has two parts. A first partially cylindrical part has a semi-circular bore therethrough extending along an axis. The bore tapers conically inwardly with respect to the axis from a larger radius at a first end to a smaller radius at second end. The outer surface of the partially cylindrical part is spaced at a constant radius from the axis between the first and second ends. The first and second parts have side walls formed between the bore and the outer surface which walls extend along a plane which forms an angle with respect to the central axis. When the two parts are engaged along their side wails and slide with respect to the axis the outer diameter of the two parts enlarges.Type: GrantFiled: December 23, 2005Date of Patent: January 19, 2010Assignee: Howmedica Osteonics Corp.Inventors: Renwen Zhang, Daniel Lawrynowicz, Nicholas Nai Guang Dong
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Patent number: D967960Type: GrantFiled: October 17, 2019Date of Patent: October 25, 2022Assignee: Howmedica Osteonics Corp.Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong, Robert W. Klein, Chau Ngo