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: 8388662
    Abstract: Systems and methods for stabilizing the spine are provided. For stabilizing the L5-S1 junction, the system includes a plate that has a generally triangular shape with an upper node and a pair of lower nodes. The upper node has a hole through the plate to receive a screw for passage into the L5 vertebra. The lower nodes each include a hole through the plate to receive screws for passage into the S1 vertebra. The system further includes a plate having a retaining element for preventing backout of screws inserted through the plate. Instruments and methods for attaching the plate to the spinal column are also provided.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: March 5, 2013
    Assignee: Warsaw Orthopedic, Inc
    Inventors: Jean Charles LeHuec, Mingyan Liu, Loic Josse
  • Publication number: 20130030535
    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: Application
    Filed: October 2, 2012
    Publication date: January 31, 2013
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: Kevin T. Foley, John L. White, Bradley T. Estes, Mingyan Liu, Loic Josse, Jeffrey D. Moore
  • Patent number: 8308803
    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: Grant
    Filed: January 22, 2008
    Date of Patent: November 13, 2012
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin T. Foley, John L. White, Bradley T. Estes, Mingyan Liu, Loic Josse, Jeffrey D. Moore
  • Patent number: 8142438
    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: August 26, 2010
    Date of Patent: March 27, 2012
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin T. Foley, Jeffrey D. Moore, Bradley T. Estes, Mingyan Liu, Loic Josse
  • Patent number: 8100917
    Abstract: Methods and instrumentation for surgical procedures relating to preparation of vertebral bodies and a disc space for insertion of spinal implants is disclosed. One instrument is a shim having a blade and a shaft having a first end connected with the blade. The blade is inserted into a distracted disc space to maintain distraction during subsequent procedures. Another instrument is a driver for driving the blade of the shim into the distracted disc space. Various methods contemplate the use of these instruments to maintain disc space distraction during disc space preparation for receiving an implant.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: January 24, 2012
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin T. Foley, Mingyan Liu
  • Publication number: 20110319938
    Abstract: A bone anchor assembly is provided, which may be used in cervical, thoracic, lumbar or sacral areas of the spine or other orthopedic locations. The anchor assembly includes a bone anchor, a receiver mounted to the bone anchor, a saddle within the receiver, a spacer within the receiver, and an engaging member. The receiver extends along a central longitudinal axis proximally away from the bone anchor. A rod or other elongated connecting element is received in a passage of the receiver in contact with the saddle, and the engaging member engages the connecting element against the saddle, which engages the saddle against the spacer, which in turn engages the proximal head of the bone anchor in the receiver. The orientation of the saddle in the receiver is adjustable to correspond to the orientation of the connecting element relative to the central longitudinal axis of the receiver.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 29, 2011
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: Gabriel Piza Vallespir, Qui Yong, Mingyan Liu, Jeffrey Zhang
  • Patent number: 8070784
    Abstract: A plating system for stabilization of a bony segment includes a plate engageable to at least first and second bony elements. For spinal stabilization, the plate is attached at least to first and second vertebrae with at least one bone fastener in each vertebra. Retaining members are attachable to the plate to prevent the bone fasteners from backing out of the plate. One retaining member is a variable retaining member that allows the bone fasteners to toggle in the plate without interference. A second retaining member is a fixed retaining member that fixes the bone fasteners relative to the plate.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: December 6, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Jean-Charles LeHuec, Curtis A. Dickman, Mingyan Liu, Loic Josse, Eric C. Lange
  • Patent number: 8002776
    Abstract: A disc preparation system includes an oscillating rasp for preparation of vertebral endplates and a central reamer for reaming a pair of kidney-shaped grooves into the vertebral endplate. The oscillating rasp is powered by a rotary power source. A linkage assembly is coupled to the rotary power source to convert the rotary motion into a reciprocating motion. A pair of rasps plates, which are linked to the linkage assembly, linearly reciprocate in opposite directions in response to the reciprocating motion of the linkage assembly. In one form, the central reamer includes a pair of cutting elements that are coupled to the rotary power source in order to rotate in response to rotational movement from the rotary power source. In another form, the central reamer includes a single cutting element coupled to an angled reamer handle and a reamer guide.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: August 23, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Mingyan Liu, Loic Josse
  • Patent number: 8002833
    Abstract: An intersomatic implant (1a, 1b) maintains bone graft material in a receiving cavity formed in a disc in order to obtain intervertebral fusion. The implant (1a, 1b) includes of a plurality of parts provided with means for in situ connection of two consecutive parts. Instruments (33) are used to connect these implants (1a, 1b) and a tool assists in introducing these implants (1a, 1b) into the cavity formed in the disc.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: August 23, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Daniele A. Fabris Monterumici, Rudolf Bertagnoli, Mingyan Liu, Loic Josse
  • Patent number: 7998209
    Abstract: This invention relates to implants formed from donor bone for use in lumbar interbody fusion procedures and instruments for performing such procedures. The implants are formed to include a concave surface formed from a portion of the medullary canal of a long bone. The concave surface defines a recess in the implant that serves as a depot for osteogenic material. Specific instruments for inserting the implants prepared according to this invention and for preparing the intervertebral space to receive the implants are also provided.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: August 16, 2011
    Assignee: Warsaw Orthopedic, Inc
    Inventors: Charles L. Branch, Mingyan Liu, Lawrence M. Boyd, Loic Josse
  • Patent number: 7993403
    Abstract: Laterally expanding vertebral spacer devices are provided for repairing damaged vertebral discs. The vertebral spacer devices maintain the height of a distracted vertebral disc space while providing stability to the spine. In one form of the invention, a vertebral spacer device is provided with a first arm movably coupled to a second arm. The first and second arms are laterally expandable from a first width for insertion into the disc space to a second width after insertion into the disc space. The first and second arms also define a cavity therebetween for placement of bone growth material.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: August 9, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin Foley, Harald Ebner, Mingyan Liu, Charles Branch, Lawrence M. Boyd
  • Patent number: 7967863
    Abstract: This invention relates to devices and instruments for implant insertion through a posterior lateral opening to the disc space. The instruments include an implant inserter, and the devices include a spinal fusion implant engageable by the implant inserter. The implant provides bilateral support of the adjacent vertebrae when inserted into the disc space from a postero-lateral approach.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: June 28, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: George Frey, Mingyan Liu, Loic Josse, Lawrence M. Boyd
  • Patent number: 7935124
    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, rasps, 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: August 7, 2003
    Date of Patent: May 3, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: George Frey, John L. White, Mingyan Liu, Loic Josse
  • Publication number: 20110098745
    Abstract: Medical devices for the treatment of spinal conditions are described herein. The medical device of this invention includes a spacer that is disposed between adjacent spinous processes and has a proximal retention member and a distal retention member, which may be rotated with respect to the proximal retention member between an initial implantation configuration and a final locked configuration.
    Type: Application
    Filed: October 28, 2009
    Publication date: April 28, 2011
    Applicant: KYPHON SARL
    Inventors: Mingyan Liu, Jeffrey Zhang, Loic Josse
  • Patent number: 7875034
    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: Grant
    Filed: March 14, 2006
    Date of Patent: January 25, 2011
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Loic Josse, Mingyan Liu, Jeffrey Zhang, Randy N. Allard
  • Publication number: 20100331845
    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: August 26, 2010
    Publication date: December 30, 2010
    Inventors: Kevin T. Foley, Jeffrey D. Moore, Bradley T. Estes, Mingyan Liu, Loic Josse
  • Patent number: 7828807
    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: Grant
    Filed: January 30, 2006
    Date of Patent: November 9, 2010
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Jean-Charles LeHuec, Mingyan Liu, Loic Josse
  • Patent number: 7803161
    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: December 20, 2006
    Date of Patent: September 28, 2010
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kevin T. Foley, Jeffrey D. Moore, Bradley T. Estes, Mingyan Liu, Loic Josse
  • Publication number: 20100241169
    Abstract: A linking element between a longitudinal element of a vertebral osteosynthesis device and a vertebra that comprises a left part and a right part, each intended to extend on a respective side of the spinous process of the vertebra. The left part and the right part each delimit a spinous surface and a laminary surface, and include a tightening means to bring them closer to each other, and tightens them on the spinous process by integrally connecting them to each other. The left part and the right part each delimit a reception recess for the longitudinal element and include immobilization means for the linking element assembled on the vertebra. An osteosynthesis device comprising at least one such linking element.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 23, 2010
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: Mingyan Liu, Loic Josse
  • Publication number: 20100241127
    Abstract: Methods and instrumentation for surgical procedures relating to preparation of vertebral bodies and a disc space for insertion of spinal implants is disclosed. One instrument is a shim having a blade and a shaft having a first end connected with the blade. The blade is inserted into a distracted disc space to maintain distraction during subsequent procedures. Another instrument is a driver for driving the blade of the shim into the distracted disc space. Various methods contemplate the use of these instruments to maintain disc space distraction during disc space preparation for receiving an implant.
    Type: Application
    Filed: December 30, 2009
    Publication date: September 23, 2010
    Inventors: Kevin T. Foley, Mingyan Liu