Patents by Inventor Theo Choi

Theo Choi 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).

  • Publication number: 20210220021
    Abstract: A transverse connector includes a cross member assembly, a first connector assembly, and a second connector assembly. The cross member assembly includes a cross member, a first ring, and a second ring. The cross member has a first end portion and a second end portion. The first ring is receivable on the first end portion of the cross member and the second ring is receivable on the second end portion of the cross member. The first and second connector assemblies are coupled to the first and second rings of the cross member assembly, respectively, to support the cross member between the first and second connector assemblies. The first and second connector assemblies are configured to selectively and releasably secure to bone anchors.
    Type: Application
    Filed: April 5, 2021
    Publication date: July 22, 2021
    Inventors: Michael Finn, Christopher Harrod, Sergey Neckrysh, Peter Newton, Harry Shufflebarger, Timmon Ark, Theo Choi
  • Patent number: 10993746
    Abstract: A transverse connector includes a cross member assembly, a first connector assembly, and a second connector assembly. The cross member assembly includes a cross member, a first ring, and a second ring. The cross member has a first end portion and a second end portion. The first ring is receivable on the first end portion of the cross member and the second ring is receivable on the second end portion of the cross member. The first and second connector assemblies are coupled to the first and second rings of the cross member assembly, respectively, to support the cross member between the first and second connector assemblies. The first and second connector assemblies are configured to selectively and releasably secure to bone anchors.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: May 4, 2021
    Assignee: K2M, Inc.
    Inventors: Michael Finn, Christopher Harrod, Sergey Neckrysh, Peter Newton, Harry Shufflebarger, Timmon Ark, Theo Choi
  • Publication number: 20200121370
    Abstract: A surgical implant includes a first portion and a second portion. The first portion includes a body and connector assemblies. The body includes a posterior surface and defines a first bore defining an acute angle with respect to a first axis that is orthogonal to the posterior surface. The connector assemblies are disposed on opposing lateral sides of the body. Each connector assembly is selectively rotatable relative to the body. The second portion includes a base extending in a cephalad direction from the first portion, and an extension extending in the cephalad direction from the base. The base defines second bores configured to receive respective bone screws. The extension defines a third bore. The first bore of the body and the third bore of the extension define a second axis. The second bores are defined along a third axis orthogonal to the second axis.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 23, 2020
    Inventors: Michael Finn, Khaled Kebaish, Peter Newton, Harry Shufflebarger, Joel Toretti, Theo Choi, Stacy Hollins, Keenan O'Brien
  • Patent number: 10610265
    Abstract: A polyaxial bone device includes a screw, a screw housing, and a spring. The screw includes a screw head and a shaft that extends from the screw head. The screw housing defines a longitudinal axis and a bore that extends along the longitudinal axis. The screw housing includes a basewall and opposed sidewalls that extend from the basewall. The basewall defines a notch that receives the shaft to increase pivotal movement between the screw and the screw housing relative to the longitudinal axis of the screw housing. The opposed sidewalk define a rod-receiving channel. The screw housing defines a transverse hole in communication with the bore. The spring is supported in the transverse hole and extends therethrough. The spring extends into the bore to frictionally engage the screw head while the screw head is seated in the bore.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 7, 2020
    Assignee: K2M, Inc.
    Inventors: Timmon Ark, Theo Choi, Keenan O'Brien
  • Publication number: 20200054366
    Abstract: A polyaxial bone device includes a screw, a screw housing, and a spring. The screw includes a screw head and a shaft that extends from the screw head. The screw housing defines a longitudinal axis and a bore that extends along the longitudinal axis. The screw housing includes a basewall and opposed sidewalls that extend from the basewall. The basewall defines a notch that receives the shaft to increase pivotal movement between the screw and the screw housing relative to the longitudinal axis of the screw housing. The opposed sidewalls define a rod-receiving channel. The screw housing defines a transverse hole in communication with the bore. The spring is supported in the transverse hole and extends therethrough. The spring extends into the bore to frictionally engage the screw head while the screw head is seated in the bore.
    Type: Application
    Filed: October 23, 2019
    Publication date: February 20, 2020
    Inventors: Timmon Ark, Theo Choi, Keenan O'Brien
  • Publication number: 20190336178
    Abstract: A transverse connector includes a cross member assembly, a first connector assembly, and a second connector assembly. The cross member assembly includes a cross member, a first ring, and a second ring. The cross member has a first end portion and a second end portion. The first ring is receivable on the first end portion of the cross member and the second ring is receivable on the second end portion of the cross member. The first and second connector assemblies are coupled to the first and second rings of the cross member assembly, respectively, to support the cross member between the first and second connector assemblies. The first and second connector assemblies are configured to selectively and releasably secure to bone anchors.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 7, 2019
    Inventors: Michael Finn, Christopher Harrod, Sergey Neckrysh, Peter Newton, Harry Schufflebarger, Timmon Ark, Theo Choi
  • Publication number: 20170290615
    Abstract: An instrument for bending a surgical rod includes first and second arm assemblies. The first arm assembly includes first and second arms having respective first and second receiving portions configured to receive the surgical rod therein. The second arm assembly includes third and fourth arms having respective third and fourth receiving portions configured to receive the surgical rod therein. The instrument is reconfigurable from an initial configuration in which the first and third receiving portions of the respective first and third arms engage the surgical rod such that transitioning the first and third arms towards each other bends the surgical rod in a first orientation and transitioning the first and third arms away from each other bends the surgical rod in a second orientation opposite to the first orientation.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 12, 2017
    Inventors: Frank Schwab, Theo Choi, Timmon Ark
  • Patent number: 9526553
    Abstract: An instrument for selectively coupling with a pedicle screw is disclosed. The instrument includes an inner shaft, wherein the distal tip is configured to engage a pedicle screw and the proximal end configured to be selectively engaged with a knob, and a knob assembly configured to advance over the inner shaft, wherein the distal end is configured to engage the tulip of the pedicle screw and the proximal end is configured to selectively engage the inner shaft. A method for selectively coupling the instrument to a pedicle screw is also disclosed.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: December 27, 2016
    Assignee: K2M, Inc.
    Inventors: Robert Shay Bess, Theo Choi
  • Patent number: 9517099
    Abstract: A pedicle screw locking system includes a reduction tube and a locking driver. The reduction tube includes an inner shaft, a pair of grips, a reduction sleeve, and a rotatable tube. The inner shaft has a threaded end and reduction arms distally extending from the threaded end. Each grip of the pair of grips has a finger configured to engage the receiver of a pedicle screw. The reduction sleeve and the rotatable tube are disposed over and coaxially aligned with the inner shaft. The rotatable tube is coupled to the reduction sleeve. The rotatable tube moves the reduction sleeve relative to the reduction arms. The locking driver includes a threaded portion and a blunt tip. The threaded portion is configured to thread into threads in the receiver of the pedicle screw until the blunt tip locks the receiver of the pedicle screw.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 13, 2016
    Assignee: K2M, Inc.
    Inventors: Robert Shay Bess, Frank Schwab, David Dreusicke, Theo Choi, Thomas Errico
  • Patent number: 9504497
    Abstract: Provided is an iliosacral polyaxial screw system. A multiple part insert member is provided to secure the screw to the housing of the assembly to accommodate screws in which the shank diameter of the screw is greater than the bottom opening of the screw housing or greater than the opening of a ring member designed to capture the head of the screw in the housing.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: November 29, 2016
    Assignee: K2M, Inc.
    Inventors: Timmon Ark, Daniel Genovese, Theo Choi
  • Publication number: 20150282855
    Abstract: An instrument for selectively coupling with a pedicle screw is disclosed. The instrument includes an inner shaft, wherein the distal tip is configured to engage a pedicle screw and the proximal end configured to be selectively engaged with a knob, and a knob assembly configured to advance over the inner shaft, wherein the distal end is configured to engage the tulip of the pedicle screw and the proximal end is configured to selectively engage the inner shaft. A method for selectively coupling the instrument to a pedicle screw is also disclosed.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 8, 2015
    Inventors: Robert Shay Bess, Theo Choi
  • Publication number: 20150142067
    Abstract: A pedicle screw locking system includes a reduction tube and a locking driver. The reduction tube includes an inner shaft, a pair of grips, a reduction sleeve, and a rotatable tube. The inner shaft has a threaded end and reduction arms distally extending from the threaded end. Each grip of the pair of grips has a finger configured to engage the receiver of a pedicle screw. The reduction sleeve and the rotatable tube are disposed over and coaxially aligned with the inner shaft. The rotatable tube is coupled to the reduction sleeve. The rotatable tube moves the reduction sleeve relative to the reduction arms. The locking driver includes a threaded portion and a blunt tip. The threaded portion is configured to thread into threads in the receiver of the pedicle screw until the blunt tip locks the receiver of the pedicle screw.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventors: Robert Shay Bess, Frank Schwab, David Dreusicke, Theo Choi
  • Patent number: 8979898
    Abstract: Provided is an iliosacral polyaxial screw system. A multiple part insert member is provided to secure the screw to the housing of the assembly to accommodate screws in which the shank diameter of the screw is greater than the bottom opening of the screw housing or greater than the opening of a ring member designed to capture the head of the screw in the housing.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: March 17, 2015
    Assignee: K2M, Inc.
    Inventors: Timmon Ark, Daniel Genovese, Theo Choi
  • Publication number: 20140243900
    Abstract: Provided is an iliosacral polyaxial screw system. A multiple part insert member is provided to secure the screw to the housing of the assembly to accommodate screws in which the shank diameter of the screw is greater than the bottom opening of the screw housing or greater than the opening of a ring member designed to capture the head of the screw in the housing.
    Type: Application
    Filed: May 6, 2014
    Publication date: August 28, 2014
    Applicant: K2M Inc.
    Inventors: Timmon Ark, Daniel Genovese, Theo Choi
  • Publication number: 20140236238
    Abstract: Provided is an iliosacral polyaxial screw system. A multiple part insert member is provided to secure the screw to the housing of the assembly to accommodate screws in which the shank diameter of the screw is greater than the bottom opening of the screw housing or greater than the opening of a ring member designed to capture the head of the screw in the housing.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Applicant: K2M INC
    Inventors: Timmon Ark, Daniel Genovese, Theo Choi