Patents by Inventor Thibault Chandanson
Thibault Chandanson 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: 10786284Abstract: A bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, a compression member positioned within the receiver member, and a closure mechanism including an outer set screw and an inner set screw. The outer set screw delivers a distal force to the compression member to fix the bone anchor relative to the receiver member. The proximal surface of the compression member has a shape configured to restrict deformation of the compression member arms including motion of the compression member arms relative to each other. The distal surface of the outer set screw has a shape that is complementary to the shape of the proximal surface of the compression member.Type: GrantFiled: February 15, 2019Date of Patent: September 29, 2020Assignee: Medos International SarlInventors: Frank Spratt, Ernest Quintanilha, Thibault Chandanson
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Publication number: 20190365426Abstract: Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a receiver member. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member that seats a spherical head of the bone anchor and a spinal fixation element, a compression member seated within the receiver member, proximally of the head of the bone anchor, and a closure mechanism seated within the receiver member, proximally of the compression member. One or more of the receiver member, the compression member, and the closure mechanism can have gripping features thereon configured to secure the bone anchor and/or the spinal fixation element within the receiver member, thereby reducing a risk of slippage of the bone anchor and/or the spinal fixation element with respect to the receiver member.Type: ApplicationFiled: June 25, 2019Publication date: December 5, 2019Inventors: Frank Spratt, Philip A. Cormier, Ernest Quintanilha, Sara Dziedzic, Nicholas Pavento, Derek Shaw, Thibault Chandanson
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Publication number: 20190328426Abstract: A cannulated bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, and a closure mechanism to fix the spinal fixation element with respect to the receiver member. The bone anchor includes a distal shaft having a first threaded section distal to a proximal head, a second threaded section distal to and adjacent the first threaded section, and a third threaded section distal to and adjacent the second threaded section. The first threaded section having a constant major and minor diameter. The second threaded section having a tapering major and minor diameter. The third threaded section having a tapering major diameter and a constant minor diameter.Type: ApplicationFiled: May 29, 2019Publication date: October 31, 2019Applicant: MEDOS INTERNATIONAL SARLInventors: Philip Cormier, Frank Spratt, Richard Fournier, Sara Root, Thibault Chandanson
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Patent number: 10413342Abstract: Bone anchor assemblies and methods are provided having a multi-component bone anchor that is configured to allow the shank of the bone anchor to be bottom loaded into a receiver member. In one embodiment, a bone anchor assembly is provided having a shank with a distal threaded portion and a proximal head portion, a receiver member having an aperture formed in a distal end thereof through which the head portion of the shank can be received, the receiver member defining a polyaxial seat, a non-expandable outer ring configured to be polyaxially disposed within the polyaxial seat of the receiver member and defining a central opening through which the head portion of the shank can be received, and an expandable inner ring having an inner surface configured to mate with the head portion of the shank and an outer surface configured to mate with an inner surface of the outer ring to thereby lock the outer ring in a fixed position relative to the shank.Type: GrantFiled: June 27, 2017Date of Patent: September 17, 2019Assignee: Medos International SárlInventors: Frank Spratt, Thibault Chandanson
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Publication number: 20190254717Abstract: Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a surface of the bone. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member for seating a head of the bone anchor, and a compression member for securing the bone anchor at fixed angle with respect to the receiver member when the compression member is seated within the receiver member. Corresponding engagement features of the compression member and the receiver member can be engaged in a secured configuration to inhibit or prevent removal of the compression cap from the receiver member and optionally to substantially prevent longitudinal and/or rotational movement of the compression member with respect to the receiver member.Type: ApplicationFiled: May 3, 2019Publication date: August 22, 2019Applicant: Medos Intgernational SarlInventors: Thibault Chandanson, Ernest Quintanilha, Frank Spratt, Philip A. Cormier
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Publication number: 20190209213Abstract: A bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, a compression member positioned within the receiver member, and a closure mechanism including an outer set screw and an inner set screw. The outer set screw delivers a distal force to the compression member to fix the bone anchor relative to the receiver member. The proximal surface of the compression member has a shape configured to restrict deformation of the compression member arms including motion of the compression member arms relative to each other. The distal surface of the outer set screw has a shape that is complementary to the shape of the proximal surface of the compression member.Type: ApplicationFiled: February 15, 2019Publication date: July 11, 2019Applicant: MEDOS INTERNATIONAL SARLInventors: Frank Spratt, Ernest Quintanilha, Thibault Chandanson
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Patent number: 10342582Abstract: Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a receiver member. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member that seats a spherical head of the bone anchor and a spinal fixation element, a compression member seated within the receiver member, proximally of the head of the bone anchor, and a closure mechanism seated within the receiver member, proximally of the compression member. One or more of the receiver member, the compression member, and the closure mechanism can have gripping features thereon configured to secure the bone anchor and/or the spinal fixation element within the receiver member, thereby reducing a risk of slippage of the bone anchor and/or the spinal fixation element with respect to the receiver member.Type: GrantFiled: November 4, 2013Date of Patent: July 9, 2019Assignee: DePuy Synthes Products, Inc.Inventors: Frank Spratt, Philip A. Cormier, Ernest Quintanilha, Sara Dziedzic, Nicholas Pavento, Derek Shaw, Thibault Chandanson
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Patent number: 10321938Abstract: Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a surface of the bone. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member for seating a head of the bone anchor, and a compression member for securing the bone anchor at fixed angle with respect to the receiver member when the compression member is seated within the receiver member. Corresponding engagement features of the compression member and the receiver member can be engaged in a secured configuration to inhibit or prevent removal of the compression cap from the receiver member and optionally to substantially prevent longitudinal and/or rotational movement of the compression member with respect to the receiver member.Type: GrantFiled: July 6, 2017Date of Patent: June 18, 2019Assignee: Medos International SàrlInventors: Thibault Chandanson, Ernest Quintanilha, Frank Spratt, Philip A. Cormier
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Patent number: 10321937Abstract: A cannulated bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, and a closure mechanism to fix the spinal fixation element with respect to the receiver member. The bone anchor includes a distal shaft having a first threaded section distal to a proximal head, a second threaded section distal to and adjacent the first threaded section, and a third threaded section distal to and adjacent the second threaded section. The first threaded section having a constant major and minor diameter. The second threaded section having a tapering major and minor diameter. The third threaded section having a tapering major diameter and a constant minor diameter.Type: GrantFiled: September 16, 2015Date of Patent: June 18, 2019Assignee: Medos International SarlInventors: Philip Cormier, Frank Spratt, Richard Fournier, Sara Root, Thibault Chandanson
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Publication number: 20190167317Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can convert a rotational input force (e.g., supplied by a powered driver tool) into movement of a first rod holder with respect to a second rod holder. Such movement can form a bend in a rod or other implant held by the first and second rod holders. Various mechanisms for converting this movement are disclosed, such as a worm drive mechanism and a conical gear mechanism, as are various types of rod holders, including orbiting rollers, lid-type rod holders, fixed and pivoting half-pipe rod holders, and full-pipe rod holders. In some embodiments, the instrument can also be used for cutting, for example by rotating a cutting wheel with respect to a cutting plate to cut a rod or other implant inserted through openings formed in the cutting wheel and the cutting plate.Type: ApplicationFiled: February 4, 2019Publication date: June 6, 2019Applicant: Medos International SarlInventors: Renaud Rouge, Jakub Galkowski, Thibault Chandanson
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Patent number: 10238441Abstract: Bone anchor assemblies and methods are provided having a multi-component bone anchor that is configured to allow the shank of the bone anchor to be bottom loaded into a receiver member. In one embodiment, a bone anchor assembly is provided having a shank with a distal threaded portion and a proximal head portion, a ball having a spherical exterior surface and a central lumen sized to receive the head portion of the shank, and a clip configured to be engaged between the head portion and the ball such that the clip is effective to lock the ball in engagement with the shank.Type: GrantFiled: August 31, 2017Date of Patent: March 26, 2019Assignee: Medos International SàrlInventors: Frank Spratt, Thibault Chandanson, Ernest Quintanilha, Shawn D. Stad, Ralf Klabunde
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Patent number: 10226282Abstract: A bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, a compression member positioned within the receiver member, and a closure mechanism including an outer set screw and an inner set screw. The outer set screw delivers a distal force to the compression member to fix the bone anchor relative to the receiver member. The proximal surface of the compression member has a shape configured to restrict deformation of the compression member arms including motion of the compression member arms relative to each other. The distal surface of the outer set screw has a shape that is complementary to the shape of the proximal surface of the compression member.Type: GrantFiled: August 31, 2017Date of Patent: March 12, 2019Assignee: Medos International SarlInventors: Frank Spratt, Ernest Quintanilha, Thibault Chandanson
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Publication number: 20190059967Abstract: Driver instruments are disclosed herein with various features for improving usability, easing the task of cleaning or sterilizing the instrument, reducing patient trauma associated with use of the instrument, and/or reducing the cost and assembly burden of the instrument. For example, a driver instrument can include a guide sleeve to protect patient tissue from damage caused by rotating components of the instrument or a bone anchor assembly coupled thereto, and to protect extension tabs of the bone anchor assembly from inadvertent separation. By way of further example, an instrument can include a preload assembly for maintaining engagement of a driver shaft of the instrument with a bone anchor assembly. As yet another example, an instrument can consist of a small number of components which are configured for simple, tool-free assembly and disassembly. An instrument can also be configured for use with bone anchor assemblies with and without extension tabs.Type: ApplicationFiled: August 31, 2018Publication date: February 28, 2019Inventors: Thibault Chandanson, Richard W. Fournier, Shawn D. Stad, Frank Spratt, Sam Grossman, Henri Defossez, Renaud Rouge, Philip A. Cormier
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Publication number: 20190038332Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can include a rotatable drive shaft that urges first and second portions of a modular bending or cutting template toward one another to bend or cut an implant disposed between the template portions. A linkage assembly can be included to provide a mechanical advantage in urging the template portions toward one another. In some embodiments, an instrument can include a rotatable drive shaft that, depending on direction of rotation, pushes or pulls a first modular template portion with respect to a second modular template portion to bend an implant disposed between the template portions in one direction or another direction. In some embodiments, an instrument can include a worm drive that rotates a cutting wheel with respect to a cutting plate to cut an implant inserted through openings formed in the cutting wheel and the cutting plate.Type: ApplicationFiled: August 10, 2018Publication date: February 7, 2019Inventors: Renaud Rouge, Henri Defossez, Thibault Chandanson, Joseph Caulfield, Daniel Lyness, Zoher Bootwala, Michael O'Neil
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Patent number: 10194957Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can convert a rotational input force (e.g., supplied by a powered driver tool) into movement of a first rod holder with respect to a second rod holder. Such movement can form a bend in a rod or other implant held by the first and second rod holders. Various mechanisms for converting this movement are disclosed, such as a worm drive mechanism and a conical gear mechanism, as are various types of rod holders, including orbiting rollers, lid-type rod holders, fixed and pivoting half-pipe rod holders, and full-pipe rod holders. In some embodiments, the instrument can also be used for cutting, for example by rotating a cutting wheel with respect to a cutting plate to cut a rod or other implant inserted through openings formed in the cutting wheel and the cutting plate.Type: GrantFiled: May 13, 2016Date of Patent: February 5, 2019Assignee: Medos International SarlInventors: Renaud Rouge, Jakub Galkowski, Thibault Chandanson
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Patent number: 10085786Abstract: Driver instruments are disclosed herein with various features for improving usability, easing the task of cleaning or sterilizing the instrument, reducing patient trauma associated with use of the instrument, and/or reducing the cost and assembly burden of the instrument. For example, a driver instrument can include a guide sleeve to protect patient tissue from damage caused by rotating components of the instrument or a bone anchor assembly coupled thereto, and to protect extension tabs of the bone anchor assembly from inadvertent separation. By way of further example, an instrument can include a preload assembly for maintaining engagement of a driver shaft of the instrument with a bone anchor assembly. As yet another example, an instrument can consist of a small number of components which are configured for simple, tool-free assembly and disassembly. An instrument can also be configured for use with bone anchor assemblies with and without extension tabs.Type: GrantFiled: April 13, 2015Date of Patent: October 2, 2018Assignee: Medos International SàrlInventors: Thibault Chandanson, Richard Fournier, Shawn Stad, Frank Spratt, Sam Grossman, Henri Defossez, Renaud Rouge, Philip Cormier
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Patent number: 10076376Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can include a rotatable drive shaft that urges first and second portions of a modular bending or cutting template toward one another to bend or cut an implant disposed between the template portions. A linkage assembly can be included to provide a mechanical advantage in urging the template portions toward one another. In some embodiments, an instrument can include a rotatable drive shaft that, depending on direction of rotation, pushes or pulls a first modular template portion with respect to a second modular template portion to bend an implant disposed between the template portions in one direction or another direction. In some embodiments, an instrument can include a worm drive that rotates a cutting wheel with respect to a cutting plate to cut an implant inserted through openings formed in the cutting wheel and the cutting plate.Type: GrantFiled: May 27, 2015Date of Patent: September 18, 2018Assignee: Medos International SàrlInventors: Zoher Bootwala, Michael O'Neil, Renaud Rouge, Henri Defossez, Thibault Chandanson, Joseph Caulfield, Daniel Lyness
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Patent number: 10070909Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can include a rotatable drive shaft that urges first and second portions of a modular bending or cutting template toward one another to bend or cut an implant disposed between the template portions. A linkage assembly can be included to provide a mechanical advantage in urging the template portions toward one another. In some embodiments, an instrument can include a rotatable drive shaft that, depending on direction of rotation, pushes or pulls a first modular template portion with respect to a second modular template portion to bend an implant disposed between the template portions in one direction or another direction. In some embodiments, an instrument can include a worm drive that rotates a cutting wheel with respect to a cutting plate to cut an implant inserted through openings formed in the cutting wheel and the cutting plate.Type: GrantFiled: May 27, 2015Date of Patent: September 11, 2018Assignee: Medos International SàrlInventors: Renaud Rouge, Henri Defossez, Thibault Chandanson, Joseph Caulfield, Daniel Lyness
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Patent number: 10022245Abstract: A polyaxial instrument suitable for preparing the intervertebral disc space of a patient through an anterior, posterior, transforaminal or anterolateral approach. The trial can be partially inserted into a disc space and then its angle adjusted to ease its further insertion into the disc space. The trial work tip can be interchangeable with the working tip of another type of instrument such as a curette, a rasp, a spreader, a shaver, a cobb elevator, a penfield, a woodson, a chisel and an osteotome.Type: GrantFiled: January 18, 2013Date of Patent: July 17, 2018Assignee: DePuy Synthes Products, Inc.Inventors: William Frasier, Michael J O'Neil, Hassan Serhan, Henri Defossez, Thibault Chandanson
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Patent number: 9918747Abstract: Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a receiver member. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member that polyaxially seats a spherical head of the bone anchor, and a compression member seated within the receiver member, proximally of the head of the bone anchor. The compression member can have a distal end with gripping features thereon configured to create at least one line contact and/or one band contact with the head of the bone anchor, thus providing a firm grip on the head of the bone anchor and reducing a risk of slippage of the bone anchor with respect to the receiver member.Type: GrantFiled: December 11, 2015Date of Patent: March 20, 2018Assignee: DePuy Synthes Products, Inc.Inventors: Frank Spratt, Philip A. Cormier, Ernest Quintanilha, Sara Dziedzic, Nicholas Pavento, Derek Shaw, Thibault Chandanson