Patents by Inventor Hansen A. Yuan
Hansen A. Yuan 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: 9757249Abstract: An expandable implant device (100, 300, 600) for insertion between two vertebrae (400) is disclosed. The device (100, 300, 600) has a center body (10) one or more lift bodies (20, 40) and an external retaining band (60). The external retaining band (60) holds the sides (22, 42) of the one or more lift bodies (20, 40). The center body (10) has ramp surfaces (11) having a plurality or sets of ramps (11) sloped for allowing upward movement of the one or more lift bodies (20, 40). The sides (22, 42) have complimentary ramp surfaces that fit onto the ramps (11) of the center body (10). The height of the device (100, 300, 600) is increased by upward movement or downward movement or both of the one or more lift bodies (20, 40) driven by the lengthwise movement of the center body (10).Type: GrantFiled: March 29, 2017Date of Patent: September 12, 2017Assignee: Amendia, Inc.Inventors: Jeffrey Scott Radcliffe, Joshua David Gunn, Hansen A Yuan
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Publication number: 20170202675Abstract: An expandable implant device (100, 300, 600) for insertion between two vertebrae (400) is disclosed. The device (100, 300, 600) has a center body (10) one or more lift bodies (20, 40) and an external retaining band (60). The external retaining band (60) holds the sides (22, 42) of the one or more lift bodies (20, 40). The center body (10) has ramp surfaces (11) having a plurality or sets of ramps (11) sloped for allowing upward movement of the one or more lift bodies (20, 40). The sides (22, 42) have complimentary ramp surfaces that fit onto the ramps (11) of the center body (10). The height of the device (100, 300, 600) is increased by upward movement or downward movement or both of the one or more lift bodies (20, 40) driven by the lengthwise movement of the center body (10).Type: ApplicationFiled: March 29, 2017Publication date: July 20, 2017Applicant: Amendia, Inc.Inventors: Jeffrey Scott Radcliffe, Joshua David Gunn, Hansen A. Yuan
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Patent number: 9642720Abstract: An expandable implant device (100, 300, 600) for insertion between two vertebrae (400) is disclosed. The device (100, 300, 600) has a center body (10) one or more lift bodies (20, 40) and an external retaining band (60). The external retaining band (60) holds the sides (22, 42) of the one or more lift bodies (20, 40). The center body (10) has ramp surfaces (11) having a plurality or sets of ramps (11) sloped for allowing upward movement of the one or more lift bodies (20, 40). The sides (22, 42) have complimentary ramp surfaces that fit onto the ramps (11) of the center body (10). The height of the device (100, 300, 600) is increased by upward movement or downward movement or both of the one or more lift bodies (20, 40) driven by the lengthwise movement of the center body (10).Type: GrantFiled: April 23, 2014Date of Patent: May 9, 2017Assignee: Amendia, Inc.Inventors: Jeffrey Scott Radcliffe, Joshua David Gunn, Hansen A Yuan
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Patent number: 9351852Abstract: An artificial disc device for replacing a damaged nucleus is disclosed. In one form, the device may be inserted in components such that the device may be assembled within and retained by the natural annulus therein. In another form, the device may be inserted into the natural annulus in a collapsed or compressed state or arrangement and then be expanded within and retained by the annulus therein. In a further form, the device may be provided with a releasable connection so that the device may be connected in an insertion configuration and may be released in an operable configuration. Insertion tools and methods are also disclosed.Type: GrantFiled: August 14, 2012Date of Patent: May 31, 2016Assignee: PIONEER SURGICAL TECHNOLOGY, INC.Inventors: Qi-Bin Boa, Jeffrey L. Trudeau, Brian Patrick Janowski, Matthew N. Songer, Hansen A. Yuan, Thomas S. Kilpela, Gregory Berrevoets
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Publication number: 20150173917Abstract: An expandable implant device (100, 300, 600) for insertion between two vertebrae (400) is disclosed. The device (100, 300, 600) has a center body (10) one or more lift bodies (20, 40) and an external retaining band (60). The external retaining band (60) holds the sides (22, 42) of the one or more lift bodies (20, 40). The center body (10) has ramp surfaces (11) having a plurality or sets of ramps (11) sloped for allowing upward movement of the one or more lift bodies (20, 40). The sides (22, 42) have complimentary ramp surfaces that fit onto the ramps (11) of the center body (10). The height of the device (100, 300, 600) is increased by upward movement or downward movement or both of the one or more lift bodies (20, 40) driven by the lengthwise movement of the center body (10).Type: ApplicationFiled: April 23, 2014Publication date: June 25, 2015Applicant: AMENDIA, INC.Inventors: Jeffrey Scott Radcliffe, Joshua David Gunn, Hansen A. Yuan
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Patent number: 8409254Abstract: Cephalad and caudal vertebral facet joint prostheses and methods of use are provided. The cephalad prostheses are adapted and configured to be attached to a lamina portion of a vertebra without blocking a pedicle portion of the cephalad vertebra.Type: GrantFiled: June 27, 2008Date of Patent: April 2, 2013Assignee: Gmedelaware 2 LLCInventors: Hansen A. Yuan, David Stinson, Lawrence R. Jones, Mark A. Reiley
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Publication number: 20120310287Abstract: An artificial disc device for replacing a damaged nucleus is disclosed. In one form, the device may be inserted in components such that the device may be assembled within and retained by the natural annulus therein. In another form, the device may be inserted into the natural annulus in a collapsed or compressed state or arrangement and then be expanded within and retained by the annulus therein. In a further form, the device may be provided with a releasable connection so that the device may be connected in an insertion configuration and may be released in an operable configuration. Insertion tools and methods are also disclosed.Type: ApplicationFiled: August 14, 2012Publication date: December 6, 2012Applicant: Pioneer Surgical Technology, Inc.Inventors: Qi-Bin Bao, Jeffrey L. Trudeau, Brian Patrick Janowski, Matthew N. Songer, Hansen A. Yuan, Thomas S. Kilpela, Gregory Berrevoets
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Publication number: 20120283787Abstract: A pedicle screw configured to secure a rod is disclosed. In some embodiments, the pedicle screw is provided with a shaft, a yoke, a cap, a saddle and at least one separating device. The shaft has a forward end, a rear end and a longitudinal axis, the forward end being configured for insertion into a bone. The yoke is attached to the rear end of the shaft and has an interior wall nearest the shaft configured to bear against a rod inserted into the yoke. The cap is configured to engage an end of the yoke opposite the shaft. The saddle has a first side configured to mate with the cap within the yoke, and has an opposite second side configured to bear against the rod. The at least one separating device is coupled between the cap and the saddle, and is configured to urge the cap and the saddle apart from one another.Type: ApplicationFiled: October 28, 2010Publication date: November 8, 2012Applicant: Bonovo Orthopedics, Inc.Inventors: Hansen A. Yuan, Peter J. Slate
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Publication number: 20120277874Abstract: An implantable elastic material configured for use with bone implants is provided with a wire wound in an axially expanded coil form, with the expanded coil formed into a tight mesh. In some embodiments, the wire is formed from a titanium alloy. Methods of manufacturing the implantable material, and implantable devices comprising the material are also disclosed.Type: ApplicationFiled: November 11, 2010Publication date: November 1, 2012Inventors: Hansen A. Yuan, Jizong Qi, Yong Song, Jianwen Sun
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Patent number: 8241360Abstract: An artificial disc device for replacing a damaged nucleus is disclosed. In one form, the device may be inserted in components such that the device may be assembled within and retained by the natural annulus therein. In another form, the device may be inserted into the natural annulus in a collapsed or compressed state or arrangement and then be expanded within and retained by the annulus therein. In a further form, the device may be provided with a releasable connection so that the device may be connected in an insertion configuration and may be released in an operable configuration. Insertion tools and methods are also disclosed.Type: GrantFiled: October 22, 2004Date of Patent: August 14, 2012Assignee: Pioneer Surgical Technology, Inc.Inventors: Qi-Bin Bao, Jeffrey L. Trudeau, Brian Patrick Janowski, Matthew N. Songer, Hansen A. Yuan, Thomas S. Kilpela, Gregory Berrevoets
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Patent number: 7766965Abstract: A method of treating a diseased or damaged intervertebral disc having a nucleus pulposus and an annulus. The method includes the steps of accessing and preparing the intervertebral disc for receipt of the biomaterial by removing at least a portion of the nucleus pulposus to create a nuclear cavity. A quantity of the curable biomaterial is delivered under pressure to the nuclear cavity. The delivered biomaterial is at least partially cured in such a manner to retain it in the nuclear cavity. The at least partially cured biomaterial is contoured to achieve a desired conformation approximating that of the nuclear cavity.Type: GrantFiled: June 30, 2006Date of Patent: August 3, 2010Assignee: Disc Dynamics, Inc.Inventors: Qi-Bin Bao, Robert Garryl Hudgins, Jeffrey C. Felt, Alexander Arsenyev, Hansen A. Yuan
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Patent number: 7713301Abstract: A system for repairing an intervertebral disc by delivering and curing a biomaterial in situ within the disc. The system includes both a device, having an insertable balloon and related lumen, controls and adapters, as well as an in situ curable biomaterial (and related biomaterial delivery means). The system can allow the doctor to determine a suitable endpoint for biomaterial delivery, by controlling distraction and/or biomaterial delivery pressure, and in turn, to deliver a desired quantity of biomaterial to the balloon in order to achieve improved polymer cure and implant characteristics. Also provided is a related method for repairing an intervertebral disc by using such a system to deliver and cure the biomaterial in situ. The system can be used to implant a prosthetic total disc, or a prosthetic disc nucleus in a manner that leaves the surrounding disc tissue substantially intact.Type: GrantFiled: March 29, 2006Date of Patent: May 11, 2010Assignee: Disc Dynamics, Inc.Inventors: Qi-Bin Bao, Robert Garryl Hudgins, Jeffrey C. Felt, Alexander Arsenyev, Hansen A. Yuan
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Patent number: 7601172Abstract: The present invention relates to a device and method which may be used to reinforce the native annulus during spinal surgery. The device is a catheter based device which is placed into the inter-vertebral space following discectomy performed by either traditional surgical or endoscopic approaches. The distal end of the catheter is comprised of an expansile loop which may be increased in diameter by advancement of a portion of the catheter via its proximal end, such proximal end remaining external to the body. The expansile loop may be formed such that when the loop is diametrically contracted the loop feeds into its other end, similar to a snake eating its own tail. Stabilization of the outer portion of the loop and pulling out the inner portion will thereby increase the overall diameter of the loop while maintaining it as a closed loop or torus. The expansile loop then uses an attachment means to secure it to substantially healthy tissues of the annulus, nucleus, or endplates.Type: GrantFiled: November 14, 2005Date of Patent: October 13, 2009Assignee: Ouroboros Medical, Inc.Inventors: Jerome Segal, Matthew Thomas Yurek, Hansen A. Yuan, Anthony Tung Yeung
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Publication number: 20090254132Abstract: Devices and methods for treating bones having bone marrow therein, or other targeted anatomical locations, including bones that are weakened, suffering from or prone to fracture and/or disease. The disclosed devices desirably prepare the targeted anatomical site for a flow of filling/stabilizing and/or therapeutic material, and then provide for control of the flow of material within the targeted anatomical site, measure the volume of material delivered to the site of interest, and prevent the placement of materials in unintended locations. Once material has been delivered, some or all of the flow control devices can be removed from the targeted anatomical site.Type: ApplicationFiled: July 7, 2006Publication date: October 8, 2009Inventors: Robert M. Scribner, Lawrence R. Jones, Hansen A. Yuan
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Patent number: 7547319Abstract: The present invention relates to a device and method to 1) facilitate disk fusing, 2) perform an artificial replacement of the nucleus, 3) perform an artificial replacement of the annulus, or 4, perform an artificial replacement of both the nucleus and annulus. The device is designed to be placed into the inter-vertebral space following diskectomy. The invention includes a delivery catheter and an expandable continuous mesh loop that has a torus configuration with a lumen within the mesh loop and a center hole. The mesh loop can be diametrically increased or contracted in diameter by the control element acting on the mesh loop. The mesh loop may be formed of a woven or braided material from a polymer such as PEEK (polyetheretherketone), nylon, polyurethane, polyester polyethylene, polypropylene or any other biocompatible polymers, or formed from a metallic braid of stainless steel, elgiloy, Nitinol, or any other biocompatible metals.Type: GrantFiled: February 22, 2006Date of Patent: June 16, 2009Assignee: Ouroboros MedicalInventors: Jerome Segal, Matthew Thomas Yurek, Hansen A. Yuan, Anthony Tung Yeung
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Patent number: 7077865Abstract: A system for repairing an intervertebral disc by delivering and curing a biomaterial in situ within the disc. The system includes both a device, having an insertable balloon and related lumen, controls and adapters, as well as an in situ curable biomaterial (and related biomaterial delivery means). The system can allow the doctor to determine a suitable endpoint for biomaterial delivery, by controlling distraction and/or biomaterial delivery pressure, and in turn, to deliver a desired quantity of biomaterial to the balloon in order to achieve improved polymer cure and implant characteristics. Also provided is a related method for repairing an intervertebral disc by using such a system to deliver and cure the biomaterial in situ. The system can be used to implant a prosthetic total disc, or a prosthetic disc nucleus in a manner that leaves the surrounding disc tissue substantially intact.Type: GrantFiled: February 13, 2003Date of Patent: July 18, 2006Assignee: Disc Dynamics, Inc.Inventors: Qi-Bin Bao, Robert Garryl Hudgins, Jeffrey C. Felt, Alexander Arsenyev, Hansen A. Yuan
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Patent number: 7001431Abstract: A system for repairing an intervertebral disc by delivering and curing a biomaterial in situ within the disc. The system includes both a device, having an insertable balloon and related lumen, controls and adapters, as well as an in situ curable biomaterial (and related biomaterial delivery means). The system can allow the doctor to determine a suitable endpoint for biomaterial delivery, by controlling distraction and/or biomaterial delivery pressure, and in turn, to deliver a desired quantity of biomaterial to the balloon in order to achieve improved polymer cure and implant characteristics. Also provided is a related method for repairing an intervertebral disc by using such a system to deliver and cure the biomaterial in situ. The system can be used to implant a prosthetic total disc, or a prosthetic disc nucleus in a manner that leaves the surrounding disc tissue substantially intact.Type: GrantFiled: February 13, 2003Date of Patent: February 21, 2006Assignee: Disc Dynamics, Inc.Inventors: Qi-Bin Bao, Robert Garryl Hudgins, Jeffrey C. Felt, Alexander Arsenyev, Hansen A. Yuan
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Publication number: 20040230304Abstract: Cephalad and caudal vertebral facet joint prostheses and methods of use are provided. The cephalad prostheses are adapted and configured to be attached to a lamina portion of a vertebra without blocking a pedicle portion of the cephalad vertebra.Type: ApplicationFiled: May 14, 2003Publication date: November 18, 2004Applicant: Archus Orthopedics Inc.Inventors: Hansen A. Yuan, David Stinson, Lawrence R. Jones, Mark A. Reiley
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Publication number: 20040230201Abstract: Tools for installing artificial cephalad and caudal vertebral facet joint prostheses are provided. Specifically, an installation fixture for aligning and installing caudal, cephalad, or caudal and cephalad facet joint prostheses is provided. Also provided is a guide tool for use with the installation fixture for guiding the affixation of a prosthesis to a vertebra.Type: ApplicationFiled: May 14, 2003Publication date: November 18, 2004Applicant: Archus Orthopedics Inc.Inventors: Hansen A. Yuan, David Stinson, Lawrence R. Jones, Mark A. Reiley
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Publication number: 20030220649Abstract: A system for repairing an intervertebral disc by delivering and curing a biomaterial in situ within the disc. The system includes both a device, having an insertable balloon and related lumen, controls and adapters, as well as an in situ curable biomaterial (and related biomaterial delivery means). The system can allow the doctor to determine a suitable endpoint for biomaterial delivery, by controlling distraction and/or biomaterial delivery pressure, and in turn, to deliver a desired quantity of biomaterial to the balloon in order to achieve improved polymer cure and implant characteristics. Also provided is a related method for repairing an intervertebral disc by using such a system to deliver and cure the biomaterial in situ. The system can be used to implant a prosthetic total disc, or a prosthetic disc nucleus in a manner that leaves the surrounding disc tissue substantially intact.Type: ApplicationFiled: February 13, 2003Publication date: November 27, 2003Inventors: Qi-Bin Bao, Robert Garryl Hudgins, Jeffrey C. Felt, Alexander Arsenyev, Hansen A. Yuan