Patents by Inventor Julien J. Prevost
Julien J. Prevost 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).
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Patent number: 8721651Abstract: Embodiments of the invention include templates and methods for evaluating the appropriate size and shape for a medical implant. In particular, some embodiments include expandable templates and methods for evaluating appropriate size and shape for implantation of a spinal rod.Type: GrantFiled: April 27, 2011Date of Patent: May 13, 2014Assignee: Warsaw Orthopedic, Inc.Inventors: Robert M. Loke, Julien J. Prevost
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Publication number: 20140107787Abstract: A spinal implant comprises a first member defining a longitudinal axis and including a wall that defines an axial cavity and at least one lateral opening configured for disposal of an instrument. A second member is configured for disposal with the axial cavity and includes a wall having an axial surface disposed along a thickness thereof. The axial surface defines at least a portion of an axial opening and includes a plurality of gear teeth disposed therealong. The instrument is engageable with the teeth to axially translate the second member relative to the first member. Systems and methods of use are disclosed.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Thomas Stinchfield, Julien J. Prevost
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Publication number: 20130204368Abstract: An improved pultrusion process for preparing composite materials having about 10 percent to about 45 percent by volume of reinforcing fibers so as to produce a composite material having enhanced flexibility as compared with composite materials having a higher percent of reinforcing fibers by volume. Articles of manufacture made from composite material produced by the improved pultrusion process, specifically spinal implants, are also provided.Type: ApplicationFiled: February 6, 2012Publication date: August 8, 2013Applicant: Warsaw Orthopedic, IncInventor: Julien J. Prevost
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Publication number: 20130197582Abstract: A vertebral construct comprises a longitudinal element extending between a first end and a second end. The longitudinal element defines a central axis. A first spacer is mounted to the longitudinal element. A second spacer is mounted to the longitudinal element. A flexible element is disposed about the longitudinal element and between the first spacer and the second spacer. The flexible element defines a central axis offset from the central axis of the longitudinal element. Methods of use are disclosed.Type: ApplicationFiled: January 26, 2012Publication date: August 1, 2013Applicant: Warsaw Orthopedic, Inc.Inventors: Julien J. Prevost, Hai H. Trieu, Ian Rubin de la Borbolla
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Patent number: 8425562Abstract: A dynamic stabilization system for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a resilient element, and a sheath. The resilient element includes an end portion engageable with the first bone anchor assembly and a resilient portion engageable with the second bone anchor assembly. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another. The sheath surrounds the resilient portion and articulation surface of the second bone anchor assembly.Type: GrantFiled: April 13, 2009Date of Patent: April 23, 2013Assignee: Warsaw Orthopedic, Inc.Inventors: Greg C. Marik, Julien J. Prevost, Jayant Jangra, Henry K. Bonin, Jr.
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Publication number: 20120277809Abstract: Embodiments of the invention include templates and methods for evaluating the appropriate size and shape for a medical implant. In particular, some embodiments include expandable templates and methods for evaluating appropriate size and shape for implantation of a spinal rod.Type: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Robert M. Loke, Julien J. Prevost
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Publication number: 20120203286Abstract: A bone fastener includes a shaft extending from a first end to a second end and defines a longitudinal axis. The shaft includes an inner surface that defines an axially extending cavity. The bone fastener further includes a body disposed within the cavity and in fixed engagement with the inner surface. The body includes a rigid element positioned within only a subregion of the cavity to form a stiffened zone exclusively in an adjacent portion of the shaft. Methods of use are disclosed.Type: ApplicationFiled: February 4, 2011Publication date: August 9, 2012Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Rex W. Armstrong, Bryan S. Wilcox, Julien J. Prevost, James Michael Mirda, Joshua W. Simpson, Robert M. Loke
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Patent number: 8206419Abstract: A dynamic stabilization device, system, and method for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a first articulation element and a second articulation element. The first articulation element includes an end portion engageable with the first bone anchor assembly, a first articulation surface, and a resilient element therebetween. The first articulation surface is separably engageable with a second articulation surface associated with the second articulation element. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another.Type: GrantFiled: April 13, 2009Date of Patent: June 26, 2012Assignee: Warsaw Orthopedic, Inc.Inventors: Greg C. Marik, Julien J. Prevost, Jayant Jangra, Henry K. Bonin, Jr.
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Patent number: 8202301Abstract: Embodiments of the invention include a system and method for stabilizing a segment of a spinal column with a dynamic spinal rod having a shank, a stay, and a casing sized to stretch tightly between components of the dynamic spinal rod and provide a structural connection between the components.Type: GrantFiled: April 24, 2009Date of Patent: June 19, 2012Assignee: Warsaw Orthopedic, Inc.Inventors: Julien J. Prevost, Jeff R. Justis, Henry K. Bonin
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Publication number: 20120065687Abstract: Vertebral rods are provided that have predetermined curvatures to support various sections of the spine. The vertebral rods include a first end that is attached to a lower region of the spine, and a second end that is attached to an upper region of the spine. The construction of the rod results in a change in stiffness along the length between the first and second ends. The rods may also include predetermined curvatures to support various sections of the spine. The rods may include two of more longitudinal sections with different radii of curvatures to accommodate attachment to the various regions of the spine. The rods may also include one or more substantially straight sections. The rods may include a length to extend along a limited portion of the spine, or may extend along a majority of the spine. Further, the rods include a varying stiffness along the length.Type: ApplicationFiled: September 10, 2010Publication date: March 15, 2012Applicant: Warsaw Orthopedic, Inc.Inventors: Rodney R. Ballard, Julien J. Prevost, Christopher F. Scifert
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Composite Rod for Spinal Implant Systems With Higher Modulus Core and Lower Modulus Polymeric Sleeve
Publication number: 20120029564Abstract: A spinal rod includes a metal component and a tube. The core component has a radius. The tube has a first state with a first state tube inner radius and a first state tube outer radius. The first state tube inner radius is greater than the core component radius. The tube has a second state with a second state tube inner radius and a second state tube outer radius. The second state tube inner radius is generally equal to the core component radius. The tube is deformable from the first state to the second state.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Hai H. Trieu, Julien J. Prevost -
Publication number: 20110313461Abstract: Systems and devices for providing dynamic stabilization of one or more spinal motion segments are provided. The systems include a connecting element between two or more bone anchor assemblies that can be attached to two or more vertebral bodies of at least one spinal motion segment. The connecting element includes a first end, a second end, an intermediate resilient element and a sheathed tether extending from the first end to the second end and through the resilient intermediate element.Type: ApplicationFiled: August 26, 2011Publication date: December 22, 2011Applicant: Warsaw Orthopedic, Inc.Inventors: Julien J. Prevost, Dimitri K. Protopsaltis
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Publication number: 20110270321Abstract: Devices and methods include an anchor assembly engageable to a vertebra and a connecting element positionable through a receiver of the anchor assembly. The assembly includes an engaging member for engaging the connecting element in the receiver. The engaging member includes a base with a cavity that receives a deformed portion the connecting element when the engaging member is securely engaged to the connecting element.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Julien J. Prevost, Robert M. Loke, Matthew Van Nortwick, Douglas N. Baker, Douglas D. Kave
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Patent number: 8029548Abstract: Systems and devices for providing dynamic stabilization of one or more spinal motion segments are provided. The systems include a connecting element between two or more bone anchor assemblies that can be attached to two or more vertebral bodies of at least one spinal motion segment. The connecting element includes a first end, a second end, an intermediate resilient element and a sheathed tether extending from the first end to the second end and through the resilient intermediate element.Type: GrantFiled: May 5, 2008Date of Patent: October 4, 2011Assignee: Warsaw Orthopedic, Inc.Inventors: Julien J. Prevost, Dimitri K. Protopsaltis
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Publication number: 20110106179Abstract: An improved set screw for use with spinal implants to attach an elongated member to a bone. The set screw has a body with a lower portion. An external thread is on the lower portion wherein at least a portion of the external thread has a variable pitch. The set screw will engage a receiver member by a predetermined longitudinal distance before encountering the variable pitch of the external thread on the set screw. A preselected torque value for seating the set screw is achieved at this predetermined longitudinal distance of thread engagement by the set screw into the receiver member. The variable pitch provides consistent clamping force even when excessive torque is applied to the set screw. An upper portion can be connected to the lower portion of the set screw through a frangible portion.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Julien J. Prevost, James J. Mirda
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Publication number: 20110106162Abstract: Elongated connecting elements include bodies having composite cross-sections defined by a center core that is surrounded by an outer portion. The center core includes a first material and the outer portion includes a second material that is distinct from the first material. In one particular form, a connecting element includes a maximum dimension across an outer cross-sectional shape of the outer portion that is less than a minimum dimension across an oblong or round outer cross-sectional shape of a polyetheretherketone (PEEK) connecting element, and the connecting element exhibits mechanical properties that are at least equivalent to the mechanical properties of the polyetheretherketone (PEEK) connecting element. In another form, the center core has a non-circular cross-sectional shape and the first material is defined by a reinforcing material randomly dispersed throughout a polymer, and the outer portion includes a circular, outer cross-sectional shape.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: Warsaw Orthopedic, Inc.Inventors: Rodney R. Ballard, Bryan S. Wilcox, Christopher M. Patterson, Julien J. Prevost, Christopher F. Scifert, Robert M. Loke
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Publication number: 20100262191Abstract: A dynamic stabilization system for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a resilient element, and a sheath. The resilient element includes an end portion engageable with the first bone anchor assembly and a resilient portion engageable with the second bone anchor assembly. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another. The sheath surrounds the resilient portion and articulation surface of the second bone anchor assembly.Type: ApplicationFiled: April 13, 2009Publication date: October 14, 2010Applicant: Warsaw Orthopedic, Inc.Inventors: Greg C. MARIK, Julien J. Prevost, Jayant Jangra, Henry K. Bonin, JR.
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Publication number: 20100262187Abstract: A dynamic stabilization device, system, and method for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a first articulation element and a second articulation element. The first articulation element includes an end portion engageable with the first bone anchor assembly, a first articulation surface, and a resilient element therebetween. The first articulation surface is separably engageable with a second articulation surface associated with the second articulation element. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another.Type: ApplicationFiled: April 13, 2009Publication date: October 14, 2010Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Greg C. Marik, Julien J. Prevost, Jayant Jangra, Henry K. Bonin, JR.
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Publication number: 20090275986Abstract: Systems and devices for providing dynamic stabilization of one or more spinal motion segments are provided. The systems include a connecting element between two or more bone anchor assemblies that can be attached to two or more vertebral bodies of at least one spinal motion segment. The connecting element includes a first end, a second end, an intermediate resilient element and a sheathed tether extending from the first end to the second end and through the resilient intermediate element.Type: ApplicationFiled: May 5, 2008Publication date: November 5, 2009Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Julien J. PREVOST, Dimitri K. PROTOPSALTIS
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Publication number: 20090259257Abstract: Methods and devices for a motion-preserving spinal rod are disclosed including an elongate first rod portion extending generally along a first curved path wherein at least a portion of the first curved path substantially approximates a kinematic curve defined by flexion and extension of a superior vertebra relative to an inferior vertebra. An elongate second rod portion is coupled to the first rod portion. It extends along a second curved path wherein at least a portion of the second curved path substantially approximates a posterior lordotic curve, and wherein the first curved path is oriented relative to the second curved path to substantially form an S-shaped curve. A core extends between the first rod portion and the second rod portion and a resilient damper is disposed about the core.Type: ApplicationFiled: April 15, 2008Publication date: October 15, 2009Applicant: WARSAW ORTHOPEDIC, INC.Inventor: Julien J. Prevost