Patents by Inventor Mingyan Liu

Mingyan Liu 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).

  • Patent number: 7465305
    Abstract: Tools and methods for spinal fusion are provided. The tool is configured to cut openings into first and second vertebrae to receive a spinal implant between the vertebrae. The tool includes a proximal handle connected to an elongate shaft that extends to a distal end. The distal end includes a first non-cutting portion through which the shaft extends, a cutting portion fixed to the shaft to rotate with rotation of the shaft, and a second non-cutting portion fixed to the cutting portion.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: December 16, 2008
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Mingyan Liu, Philippe Bouquet, Hans-Jorg Meisel, Daniel Chopin
  • Patent number: 7431735
    Abstract: An expandable intervertebral device including a body extending generally along a longitudinal axis and including at least two branch portions coupled together adjacent an end portion of the body. The device further includes an expansion member positioned between the at least two branch portions with at least a portion of the expansion member arranged at an angular orientation relative to the longitudinal axis whereby a change in the angular orientation relative to the longitudinal axis urges the at least two branch portions apart to expand the body.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: October 7, 2008
    Assignee: Sofamor S.N.C.
    Inventors: Mingyan Liu, Loic Josse
  • Publication number: 20080228276
    Abstract: A method of implanting an intervertebral prosthesis in an intervertebral space between a first and a second vertebra of a patient's spinal column may include making a first aperture at a first location to permit access to the intervertebral disc space. The first aperture may be sized to allow passage of at least a portion of the intervertebral prosthesis. A second aperture may be made at a second location to permit access to the intervertebral disc space. The second aperture may be sized to allow passage of a surgical instrument. An intervertebral prosthesis for implantation into an intervertebral space between a first and a second vertebra of a patient's spinal column is also disclosed, along with a surgical instrument for implanting the an intervertebral prosthesis.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 18, 2008
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: Hallett Mathews, Mingyan Liu, Jeffrey Zhang, Chris Hughes, Lukas G. Eisermann, Jean-Charles LeHuec
  • Publication number: 20080208258
    Abstract: This invention relates to methods and instruments for performing a surgical procedure in a disc space between adjacent vertebrae. A cannula is inserted to create a working channel through the skin and tissue of a patient using a transformational approach to the disc space. A viewing element is used to visualize working end of the cannula and the disc space. A facetectomy is performed through the working channel to access the disc space. The disc space is prepared with various instruments, such as distractors, shims, chisels and distractor-cutters that extend through the working channel. At least implant is inserted into the disc space. The procedure allows bi-lateral support of the adjacent vertebrae with the at least one implant inserted via a unitary, minimally invasive approach to disc space.
    Type: Application
    Filed: January 22, 2008
    Publication date: August 28, 2008
    Inventors: Kevin T. Foley, John L. White, Bradley T. Estes, Mingyan Liu, Loic Josse, Jeffrey D. Moore
  • Publication number: 20080161856
    Abstract: An anchorage component that can be installed within a spinal stabilization system is disclosed. The anchorage component can include a first lateral half formed with a first spinous process engagement window and a second lateral half formed with a second spinous process engagement window. The first lateral half and the second lateral half can be installed around a spinous process of a vertebra.
    Type: Application
    Filed: October 6, 2006
    Publication date: July 3, 2008
    Inventors: Mingyan Liu, Loic Josse
  • Publication number: 20080132902
    Abstract: Instruments and methods are provided for positioning one or more implants into a spinal disc space. The instruments and methods have application in an anterior lateral approach to the disc space between the L4 and L5 vertebrae. The instruments include a distractor, a housing, a guide member to facilitate positioning of the housing, and a partition member engageable to the housing to facilitate positioning of one or more implants into the disc space.
    Type: Application
    Filed: February 4, 2008
    Publication date: June 5, 2008
    Inventors: Rudolf Bertagnoli, Mingyan Liu, Loic Josse
  • Publication number: 20080114401
    Abstract: The present application is directed to devices and methods for attaching one or more elongated members to a posterior surface of a vertebral member. The devices may include a body with a first face that contacts the vertebral member and a second opposite face. A hook may extend outward from the first face to engage the vertebral member. The body may also include one or more receivers to receive the elongated members. An engagement member may be movably connected to the body. The engagement member may include a first section that contacts the body, and a second section that includes a second hook. The engagement member may be positioned relative to the body to adjust a distance between the first and second hooks to attach the body to the vertebral member. A fastener may secure the engagement member to the body at the desired position. The fastener may also attach the one or more elongated members to the body.
    Type: Application
    Filed: November 10, 2006
    Publication date: May 15, 2008
    Applicant: Warsaw Orthopedic, Inc.
    Inventors: Mingyan Liu, Loic Josse, Brice Edouard, Jean-Charles LeHuec
  • Patent number: 7361193
    Abstract: This invention relates to methods and instruments for performing disc space preparation and implant insertion from a unilateral approach to the spine through a posterior lateral opening to the disc space. The instruments include spreaders, distractors, reamers, scrapers, cutters, chisels, pushers and implant inserters. A surgical procedure is provided that allows bilateral support of the adjacent vertebrae with at least one interbody fusion device inserted into the disc space via a unilateral approach. Implants for insertion into the disc space are also provided.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: April 22, 2008
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: George Frey, Mingyan Liu, Loic Josse, Lawrence M. Boyd
  • Patent number: 7326216
    Abstract: Instruments and methods are provided for positioning one or more implants into a spinal disc space. The instruments and methods have application in an anterior lateral approach to the disc space between the L4 and L5 vertebrae. The instruments include a distractor, a housing, a guide member to facilitate positioning of the housing, and a partition member engageable to the housing to facilitate positioning of one or more implants into the disc space.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: February 5, 2008
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Rudolf Bertagnoli, Mingyan Liu, Loic Josse
  • Patent number: 7320688
    Abstract: This invention relates to methods and instruments for performing a surgical procedure in a disc space between adjacent vertebrae. A cannula is inserted to create a working channel through the skin and tissue of a patient using a transforaminal approach to the disc space. A viewing element is used to visualize working end of the cannula and the disc space. A facetectomy is performed through the working channel to access the disc space. The disc space is prepared with various instruments, such as distractors, shims, chisels and distractor-cutters that extend through the working channel. At least implant is inserted into the disc space. The procedure allows bi-lateral support of the adjacent vertebrae with the at least one implant inserted via a unitary, minimally invasive approach to disc space.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 22, 2008
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin T. Foley, John L. White, Bradley T. Estes, Mingyan Liu, Loic Josse, Jeffrey D. Moore
  • Publication number: 20070233143
    Abstract: Instruments and methods for preparing a spinal disc space to receive an implant include an annulus template, a footprint template, a distractor for distracting adjacent vertebrae, and a guide member for guiding a chisel. The instruments and methods can be employed in an oblique approach to the spinal disc space.
    Type: Application
    Filed: March 14, 2006
    Publication date: October 4, 2007
    Inventors: Loic Josse, Mingyan Liu, Jeffrey Zhang, Randy Allard
  • Publication number: 20070191857
    Abstract: A spinal disc replacement surgical instrument includes a first contacting member positionable along an endplate of a first vertebra and a second contacting member positionable along an endplate of second vertebra. The second contacting member is moveable relative to the first contacting member. A handle assembly is coupled to the first contacting member and the second contacting member. At least one actuating member is positioned between the first contacting member and the second contacting member. The at least one actuating member is moveable by the hand assembly from a first position, wherein the first and second contacting members include an unexpanded configuration relative to one another for insertion in the spinal cavity, to a second position providing expanded configuration relative to one another.
    Type: Application
    Filed: January 31, 2006
    Publication date: August 16, 2007
    Applicant: SDGI Holdings, Inc.
    Inventors: Randy Allard, Loic Josse, Mingyan Liu, Jeffrey Zhang
  • Publication number: 20070123901
    Abstract: This invention relates to methods and instruments for performing a surgical procedure in a disc space between adjacent vertebrae. The instruments include a distractor and a cutting instrument. In one embodiment the distractor includes a body portion and a pair of flanges extending along opposite sides of the body portion such that a slot is formed between the flanges and the body portion. The cutting instrument is positionable over the body portion and into the slots of the distractor so that the flanges are positioned between the cutting instrument and the adjacent tissue.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 31, 2007
    Inventors: Kevin Foley, Jeffrey Moore, Bradley Estes, Mingyan Liu, Loic Josse
  • Publication number: 20070118220
    Abstract: A vertebral implant for impaction in a disc space to restore and/or maintain desired disc space height and spinal orientation is provided. The implant has an elongated basis body having a generally lens-shape provided by convex upper and lower surfaces. Bearing surfaces are provided on the cross-edge surfaces of the endwalls. Grooves are provided in the upper and lower surfaces positioned between the bearing surfaces. The implant can be prepared from a wide variety of materials including metallic materials, synthetic materials, polymeric materials, ceramic materials, and composite materials including reinforced materials i.e. glass, fiber, and/or carbon fiber reinforced materials (CFRP).
    Type: Application
    Filed: January 18, 2007
    Publication date: May 24, 2007
    Inventors: Mingyan Liu, Hans-Joachim Fruh, Harald Ebner, Bradley Estes
  • Patent number: 7189242
    Abstract: A method and instrumentation particularly adapted for disc space preparation from an anterior approach to the spine. In one aspect, an expandable template is provided having guides to guide a cutting device for bilateral formation of openings in the disc space. In another aspect, an improved guide member is provided for guiding a cutting tool. Still further, the invention provides an improved double barrel guide sleeve with a central distraction extension and lateral non-distracting extensions. Optionally, the guide sleeve includes windows and covers to selectively cover the windows. An improved reamer with an internal chamber and optional modular coupling is also provided. A depth stop is provided to selectively engage a tool shaft and a guide sleeve to control tool penetration into the disc space. A method of using the disclosed instruments is also provided.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: March 13, 2007
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Lawrence M. Boyd, Eddie Ray, III, Bradley T. Estes, Mingyan Liu
  • Patent number: 7169183
    Abstract: This invention provides a vertebral implant for impaction in a disc space to restore and/or maintain desired disc space height and spinal orientation. The implant has an elongated basis body having a generally lens-shape provided by convex upper and lower surfaces. Bearing surfaces are provided on the cross-edge surfaces of the endwalls. Grooves are provided in the upper and lower surfaces positioned between the bearing surfaces. The implant can be prepared from a wide variety of materials including metallic materials, synthetic materials, polymeric materials, ceramic materials, and composite materials including reinforced materials i.e. glass, fiber, and/or carbon fiber reinforced materials (CFRP). These preferred materials for fabricating implants in the present invention reduce costs, increase service life and provide excellent physiological compatibility. The non-metallic material can be selected to be either a substantially permanent material, a biodegradable material or a bioerodable material.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: January 30, 2007
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Mingyan Liu, Hans-Joachim Früh, Harald Ebner, Bradley T. Estes
  • Patent number: 7169152
    Abstract: This invention relates to methods and instruments for performing a surgical procedure in a disc space between adjacent vertebrae. The instruments include a distractor and a cutting instrument. In one embodiment the distractor includes a body portion and a pair of flanges extending along opposite sides of the body portion such that a slot is formed between the flanges and the body portion. The cutting instrument is positionable over the body portion and into the slots of the distractor so that the flanges are positioned between the cutting instrument and the adjacent tissue.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: January 30, 2007
    Assignee: SDGI Holdings, Inc.
    Inventors: Kevin T. Foley, Jeffrey D. Moore, Bradley T. Estes, Mingyan Liu, Loic Josse
  • Publication number: 20070010885
    Abstract: This invention relates to a spinal implant for promoting fusion of adjacent vertebrae and restoration of normal disc height. The spinal implant includes an upper and lower surface adapted to engage cancellous bone tissue in the vertebral bodies. The spinal implant also includes at least two opposing bearing surfaces adapted to bear against cortical bone tissue in the endplates of adjacent vertebrae. This invention also provides an instrumentation to prepare the intervertebral space to receive the spinal implant and techniques for treating patents in need of corrective spinal surgery.
    Type: Application
    Filed: September 18, 2006
    Publication date: January 11, 2007
    Inventors: Mingyan Liu, Daniel Chopin, Hans-Jorg Meisel
  • Publication number: 20070005088
    Abstract: One embodiment is directed to instrumentation for performance of a spinal implantation procedure. In one form, this instrumentation includes: a tube device with an inner surface defining a passage from a proximal end portion to a distal end portion, a conveyor including a threaded conveying rod to be received in the passage of the tube device that can be rotated in the tube or moved in translation along the passage, and a deformable prosthesis structured to move through the passage of the tube by rotating the threaded conveying rod while at least a portion of the deformable prosthesis is positioned between the inner surface and the rod. Optionally, a tool to maintain position of the tube device can be included that has a jaw mechanism, among other things.
    Type: Application
    Filed: January 30, 2006
    Publication date: January 4, 2007
    Inventors: Jean-Charles LeHuec, Mingyan Liu, Loic Josse
  • Patent number: 7112224
    Abstract: This invention relates to a spinal implant for promoting fusion of adjacent vertebrae and restoration of normal disc height. The spinal implant includes an upper and lower surface adapted to engage cancellous bone tissue in the vertebral bodies. The spinal implant also includes at least two opposing bearing surfaces adapted to bear against cortical bone tissue in the endplates of adjacent vertebrae. This invention also provides an instrumentation to prepare the intervertebral space to receive the spinal implant and techniques for treating patents in need of corrective spinal surgery.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: September 26, 2006
    Assignee: SDGI Holdings, Inc.
    Inventors: Mingyan Liu, Daniel Chopin, Hans-Jörg Meisel