Hansen A Yuan

6565565, May 20, 2003

Jan 19, 2000

09/487942

Hansen Yuan - Fayetteville NY
David Nichols - Trumbull CT
Eric Finley - San Diego CA

Howmedica Osteonics Corp. - Allendale NJ

A61B 1770

606 61, 606 60

A device is disclosed for securing a spinal rod to the spine which includes a head portion configured to receive a spinal rod, a locking cap configured to engage the head portion and the spinal rod upon rotation of the locking cap relative to the head portion to secure the position of the head portion relative to the spinal rod, and a fastener portion depending from the head portion and configured to engage the spine.

7001431, Feb 21, 2006

Feb 13, 2003

10/365868

Qi-Bin Bao - Bloomington MN, US
Robert Garryl Hudgins - Lino Lakes MN, US
Jeffrey C. Felt - Greenwood MN, US
Alexander Arsenyev - Eagan MN, US
Hansen A. Yuan - Fayetteville NY, US

Disc Dynamics, Inc. - Eden Prarie MN

A61F 2/44

623 1712, 623 1711, 623 2368, 606 61, 606 90

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.

7077865, Jul 18, 2006

Feb 13, 2003

10/365842

Qi-Bin Bao - Bloomington MN, US
Robert Garryl Hudgins - Centerville MN, US
Jeffrey C. Felt - Greenwood MN, US
Alexander Arsenyev - Eagan MN, US
Hansen A. Yuan - Fayetteville NY, US

Disc Dynamics, Inc. - Eden Prairie MN

A61F 2/44

623 1712, 623 1811, 623 66

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.

7547319, Jun 16, 2009

Feb 22, 2006

11/359335

Jerome Segal - Rockville MD, US
Matthew Thomas Yurek - San Diego CA, US
Hansen A. Yuan - Syracuse NY, US
Anthony Tung Yeung - Phoenix AZ, US

Ouroboros Medical - San Diego CA

A61B 17/88

606279, 606246, 623 1711, 623 1712, 623 1716

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.

7601172, Oct 13, 2009

Nov 14, 2005

11/273299

Jerome Segal - Rockville MD, US
Matthew Thomas Yurek - San Diego CA, US
Hansen A. Yuan - Syracuse NY, US
Anthony Tung Yeung - Phoenix AZ, US

Ouroboros Medical, Inc. - Pleasanton CA

A61F 2/44

623 1711, 623 1712

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. The present invention comprises four embodiments and can be used 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.

7608095, Oct 27, 2009

Feb 12, 2003

10/365182

Hansen Yuan - Fayetteville NY, US
David Nichols - Trumbull CT, US
Eric Finley - San Diego CA, US

Howmedica Osteonics Corp. - Mahwah NJ

A61B 17/88
A61B 17/70

606279, 606246

A method of securing a spinal rod includes providing a head portion having a channel extending therethrough, providing a bone fastener depending from the head portion, arranging the spinal rod in the channel, and providing a locking cap including an upper portion and a lower portion that are rotatably coupled together, the lower portion having an elongated recess. The method includes assembling the locking cap with the head portion so that the recess is in contact with the spinal rod and so that the upper portion overlies the lower portion, and after the assembling step and while maintaining the recess in contact with the spinal rod, rotating the upper portion of the locking cap relative to both the head portion and the lower portion of the locking cap for securing the position of the head portion relative to the spinal rod.

7608104, Oct 27, 2009

Oct 25, 2004

10/973834

Hansen Yuan - Fayetteville NY, US
Mark A. Reiley - Piedmont CA, US
David Stinson - Woodinville WA, US
Lawrence R. Jones - Conifer CO, US

Archus Orthopedics, Inc. - Redmond WA

A61F 2/44

623 1711, 128898, 606248

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.

7713301, May 11, 2010

Mar 29, 2006

11/277887

Qi-Bin Bao - Bloomington MN, US
Robert Garryl Hudgins - Burnsville MN, US
Jeffrey C. Felt - Greenwood MN, US
Alexander Arsenyev - Eagan MN, US
Hansen A. Yuan - Fayetteville NY, US

Disc Dynamics, Inc. - Eden Prairie MN

A61F 2/44

623 1712, 623 1811

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.