Patents by Inventor Thomas A. Alheidt

Thomas A. Alheidt 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: 11071633
    Abstract: An intervertebral implant may include an input for expanding at least two extendable support elements connected to a body at respective locations, such that the extendable support elements each apply a respective expansion force directed away from a surface of the body. Application of a single input force to the input may induce the extendable support elements to apply different amounts of expansion force. Alternatively or additionally, an intervertebral implant may include at least two portions connected together by a hinge for articulation about the hinge. In one aspect, the hinge may include at least two rigid links each pivotably connected to the two portions. In another aspect, a rigid link of the hinge may include a passageway for communicating a hydraulic fluid between the two portions. A locking system may be positionable into successive locked configurations by operation of a cam to prevent contraction of an extendable support element.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: July 27, 2021
    Assignee: Howmedica Osteonics Corp.
    Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Ronald Litke, Thomas A. Alheidt
  • Publication number: 20210106434
    Abstract: An expandable implant is disclosed in which the implant includes top and bottom plates having angled inner surfaces that interact with expansion members. The expansion members may be situated on an actuator, and may include at least one vertical projection. In some instances, rotation of the actuator in opposing directions about a longitudinal axis may cause the expansion members to move toward or away from one another, thereby resulting in separation of the top and bottom plates. During such expansion of the implant, the at least one vertical projection of the expansion members may be guided at least partially within a recess formed in the first or second plate. Pins may also be included with the expansion members that ride along respective slots in the plates during expansion. An insertion instrument for implanting the aforementioned implant, and methods of using the same, are also disclosed.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 15, 2021
    Inventors: Thomas A. Alheidt, Bryan D. Milz, Dan Boljonis, Julien Doreau, Christine Herrmann
  • Publication number: 20210038404
    Abstract: Disclosed herein is a spinal implant with a solid frame and a porous inner layer. The implant may have a cavity defined by the porous inner layer. The solid frame may have one or more ribs extending from a medial wall to a lateral wall. The thickness of the porous layer may vary relative the thickness of the solid frame at various locations. An inserter to place a spinal implant and a method to perform same are also disclosed.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 11, 2021
    Inventors: Bryan D. Milz, Thomas A. Alheidt, Jessica Cetrangol, Christian Karl Schultz, Jason Steinke, Steven Willis, Robert Cipoletti, Charles L. Bush, JR., Brad Juchno
  • Patent number: 10898344
    Abstract: An expandable implant is disclosed in which the implant includes top and bottom plates having angled inner surfaces that interact with expansion members. The expansion members may be situated on an actuator, and may include at least one vertical projection. In some instances, rotation of the actuator in opposing directions about a longitudinal axis may cause the expansion members to move toward or away from one another, thereby resulting in separation of the top and bottom plates. During such expansion of the implant, the at least one vertical projection of the expansion members may be guided at least partially within a recess formed in the first or second plate. Pins may also be included with the expansion members that ride along respective slots in the plates during expansion. An insertion instrument for implanting the aforementioned implant, and methods of using the same, are also disclosed.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: January 26, 2021
    Assignee: Stryker European Operations Holdings LLC
    Inventors: Thomas A. Alheidt, Bryan D. Milz, Dan Boljonis, Julien Doreau, Christine Herrmann
  • Patent number: 10835388
    Abstract: Disclosed herein is a spinal implant with a solid frame and a porous inner layer. The implant may have a cavity defined by the porous inner layer. The solid frame may have one or more ribs extending from a medial wall to a lateral wall. The thickness of the porous layer may vary relative the thickness of the solid frame at various locations. An inserter to place a spinal implant and a method to perform same are also disclosed.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: November 17, 2020
    Assignee: Stryker European Operations Holdings LLC
    Inventors: Bryan D. Milz, Thomas A. Alheidt, Jessica Cetrangol, Christian Karl Schultz, Jason Steinke, Steven Willis, Robert Cipoletti, Charles L. Bush, Jr., Brad Juchno
  • Publication number: 20200281736
    Abstract: A spinal fusion system comprising an interbody device includes a leading end, trailing end, and opposed bone contacting sides extending therebetween. The trailing end defines a threaded opening that extends toward the leading end. The system also includes a bone plate that includes inner and outer surfaces and defines a first bone screw opening and connection screw opening extending therethrough. The system further includes a connection screw that includes a head and a threaded shaft. The head is positioned within the connection screw opening of the bone plate and is rotatably connected thereto such that the connection screw is rotatable about a longitudinal axis thereof but is prohibited from translational movement relative to the bone plate. The threaded shaft extends from the connection screw opening and is configured for threaded engagement with the threaded opening of interbody device.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 10, 2020
    Inventors: Bryan D. Milz, Zinoviy Sosnov, Thomas A. Alheidt, Anthony Ryan, Steven Greendyk
  • Publication number: 20200121471
    Abstract: An intervertebral implant may include an input for expanding at least two extendable support elements connected to a body at respective locations, such that the extendable support elements each apply a respective expansion force directed away from a surface of the body. Application of a single input force to the input may induce the extendable support elements to apply different amounts of expansion force. Alternatively or additionally, an intervertebral implant may include at least two portions connected together by a hinge for articulation about the hinge. In one aspect, the hinge may include at least two rigid links each pivotably connected to the two portions. In another aspect, a rigid link of the hinge may include a passageway for communicating a hydraulic fluid between the two portions. A locking system may be positionable into successive locked configurations by operation of a cam to prevent contraction of an extendable support element.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 23, 2020
    Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Ronald Litke, Thomas A. Alheidt
  • Patent number: 10485675
    Abstract: An intervertebral implant may include an input for expanding at least two extendable support elements connected to a body at respective locations, such that the extendable support elements each apply a respective expansion force directed away from a surface of the body. Application of a single input force to the input may induce the extendable support elements to apply different amounts of expansion force. Alternatively or additionally, an intervertebral implant may include at least two portions connected together by a hinge for articulation about the hinge. In one aspect, the hinge may include at least two rigid links each pivotably connected to the two portions. In another aspect, a rigid link of the hinge may include a passageway for communicating a hydraulic fluid between the two portions. A locking system may be positionable into successive locked configurations by operation of a cam to prevent contraction of an extendable support element.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 26, 2019
    Assignee: Howmedica Osteonics Corp.
    Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Ronald Litke, Thomas A. Alheidt
  • Publication number: 20190282373
    Abstract: An expandable implant system is disclosed in which the system comprises an implant with: (1) top and bottom plates, (2) ramp surfaces formed on inner surfaces of the plates, and (3) an expansion member situated between the plates. An actuator also forms part of the system, the actuator being removable from between the top and bottom plates after implantation of the implant. The expansion member has a set of angled surfaces for mating with the ramp surfaces of the plates and, upon movement of the expansion member along a longitudinal axis of the implant, the top and bottom plates expand from a first dimension to a second greater dimension. The top and bottom plates are also securable at varying angles to one another depending on the amount of movement of the expansion member along the ramp surfaces.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Inventor: Thomas A. Alheidt
  • Patent number: 10342675
    Abstract: An expandable implant system is disclosed in which the system comprises an implant with: (1) top and bottom plates, (2) ramp surfaces formed on inner surfaces of the plates, and (3) an expansion member situated between the plates. An actuator also forms part of the system, the actuator being removable from between the top and bottom plates after implantation of the implant. The expansion member has a set of angled surfaces for mating with the ramp surfaces of the plates and, upon movement of the expansion member along a longitudinal axis of the implant, the top and bottom plates expand from a first dimension to a second greater dimension. The top and bottom plates are also securable at varying angles to one another depending on the amount of movement of the expansion member along the ramp surfaces.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 9, 2019
    Assignee: Stryker European Holdings I, LLC
    Inventor: Thomas A. Alheidt
  • Publication number: 20190083270
    Abstract: Disclosed herein is a spinal implant with a solid frame and a porous inner layer. The implant may have a cavity defined by the porous inner layer. The solid frame may have one or more ribs extending from a medial wall to a lateral wall. The thickness of the porous layer may vary relative the thickness of the solid frame at various locations. An inserter to place a spinal implant and a method to perform same are also disclosed.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 21, 2019
    Inventors: Bryan D. Milz, Thomas A. Alheidt, Jessica Cetrangol, Christian Karl Schultz, Jason Steinke, Steven Willis, Robert Cipoletti, Charles L. Bush, JR., Brad Juchno
  • Publication number: 20190070365
    Abstract: An I.V. flush syringe assembly includes a barrel having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end with a passageway therethrough in fluid communication with the chamber. An elongate plunger having a proximal end, a distal end and a flexible stopper is slidably positioned in fluid-tight engagement with the inside surface of the barrel for drawing fluid into and out of the chamber by movement of the stopper relative to the barrel. The barrel includes anti-reflux structure for holding said stopper in a partially deflected position after fluid has been delivered from the chamber and the stopper is being force against the distal end of the chamber.
    Type: Application
    Filed: November 6, 2018
    Publication date: March 7, 2019
    Inventors: Thomas A. Alheidt, Tracy Ray Hottovy, Dustin Drake
  • Patent number: 10182919
    Abstract: A prosthetic intervertebral spacer is disclosed. The spacer preferably includes a body and an interface extending away from the body for use during implantation of the spacer. Methods of implanting the spacer and tools used during such procedure are also disclosed.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 22, 2019
    Assignee: Stryker European Holdings I, LLC
    Inventors: Bryan D. Milz, Christine Herrmann, Thomas A. Alheidt, Lee L. Thibodeau
  • Patent number: 10149941
    Abstract: An I.V. flush syringe assembly includes a barrel having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end with a passageway therethrough in fluid communication with the chamber. An elongate plunger having a proximal end, a distal end and a flexible stopper is slidably positioned in fluid-tight engagement with the inside surface of the barrel for drawing fluid into and out of the chamber by movement of the stopper relative to the barrel. The barrel includes anti-reflux structure for holding said stopper in a partially deflected position after fluid has been delivered from the chamber and the stopper is being force against the distal end of the chamber.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 11, 2018
    Assignee: Becton, Dickinson and Company
    Inventors: Thomas A. Alheidt, Tracy Ray Hottovy, Dustin Drake
  • Publication number: 20180303625
    Abstract: An expandable implant is disclosed in which the implant includes top and bottom plates having angled inner surfaces that interact with expansion members. The expansion members may be situated on an actuator, and may include at least one vertical projection. In some instances, rotation of the actuator in opposing directions about a longitudinal axis may cause the expansion members to move toward or away from one another, thereby resulting in separation of the top and bottom plates. During such expansion of the implant, the at least one vertical projection of the expansion members may be guided at least partially within a recess formed in the first or second plate. Pins may also be included with the expansion members that ride along respective slots in the plates during expansion. An insertion instrument for implanting the aforementioned implant, and methods of using the same, are also disclosed.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 25, 2018
    Inventors: Thomas A. Alheidt, Bryan D. Milz, Dan Boljonis, Julien Doreau, Christine Herrmann
  • Patent number: 10105494
    Abstract: A flush syringe assembly comprises a barrel including a cylindrical side wall having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end having a passageway therethrough in fluid communication with the chamber. A plunger including an elongate body portion having a stopper at its distal end is provided. The stopper is slidably positioned in fluid-tight engagement with the inside surface of the barrel for driving fluid out of the chamber through the passageway. The stopper includes a distal portion and a proximal portion separated by a spring element and configured to compress when fluid is being driven through the passageway by motion of the plunger and to continue to drive fluid through the passageway after motion of the plunger has stopped.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 23, 2018
    Assignee: Becton, Dickinson and Company
    Inventors: Thomas A. Alheidt, Anthony J. Kosinski
  • Patent number: 10080668
    Abstract: A method for fusing vertebral bodies comprising the steps of: mounting a first engagement member of a fixation member to a pedicle of a first vertebra and a second engagement member of the spinal fixation member to a pedicle of a second vertebra, the first engagement member having a first extension engaged with an expansion ring, the second engagement member having a second extension engaged with the expansion ring; inserting screws through the first and second engagement members and into the pedicles of the respective first and second vertebrae; rotating the expansion ring in a first direction, thereby distracting the first and second vertebrae; implanting an intervertebral implant between the first and second vertebrae after rotating the expansion ring in the first direction; and rotating the expansion ring in a second direction after implanting the intervertebral implant, thereby compressing the first and second vertebrae.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 25, 2018
    Assignee: Stryker European Holdings I, LLC
    Inventors: Thomas A. Alheidt, Christine Herrmann, Bryan D. Milz
  • Patent number: 10070969
    Abstract: A device for intervertebral disc repair includes a cannulated screw having a head and a shaft, a plug defining an aperture, and an intervertebral spacer. The screw is configured to be placed through the aperture and into engagement with the spacer. A kit includes the device, a guide wire connectable with the spacer, and a bone tamp. Methods of using the device and kit are provided.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: September 11, 2018
    Assignee: Stryker European Holdings I, LLC
    Inventor: Thomas A. Alheidt
  • Publication number: 20180133021
    Abstract: A prosthetic intervertebral spacer is disclosed. The spacer preferably includes a body and an interface extending away from the body for use during implantation of the spacer. Methods of implanting the spacer and tools used during such procedure are also disclosed.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Bryan D. Milz, Christine Herrmann, Thomas A. Alheidt, Lee L. Thibodeau
  • Patent number: 9962270
    Abstract: An expandable implant is disclosed in which the implant includes top and bottom plates having angled inner surfaces that interact with expansion members. The expansion members may be situated on an actuator, and may include at least one vertical projection. In some instances, rotation of the actuator in opposing directions about a longitudinal axis may cause the expansion members to move toward or away from one another, thereby resulting in separation of the top and bottom plates. During such expansion of the implant, the at least one vertical projection of the expansion members may be guided at least partially within a recess formed in the first or second plate. Pins may also be included with the expansion members that ride along respective slots in the plates during expansion. An insertion instrument for implanting the aforementioned implant, and methods of using the same, are also disclosed.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: May 8, 2018
    Assignee: Stryker European Holdings I, LLC
    Inventors: Thomas A. Alheidt, Bryan D. Milz, Dan Boljonis, Julien Doreau, Christine Herrmann