Patents by Inventor Amir Ali Sharifi-Mehr
Amir Ali Sharifi-Mehr 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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Publication number: 20240091022Abstract: A spinal interbody device (IBD) includes a solid wall that at least partially defines a boundary of the IBD and a porous body connected to the solid wall. The porous body includes a plurality of sections that form at least a portion of both a superior and inferior bone interface side of the IBD. Each section of the porous body has a different porosity than an adjacent section such that the porosities increase toward a center of the IBD.Type: ApplicationFiled: November 27, 2023Publication date: March 21, 2024Inventors: Collin Newman, Christian Karl Schultz, Steven Willis, Amir Ali Sharifi-Mehr, Oliver Buchert, Christopher P. Bell, Andrew Edward Ehlers, Anna Reza, Marc Gilles Long, Joseph Henry Robinson
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Patent number: 11925398Abstract: A bone fastener includes a head, and a screw portion extends from the head. The screw portion includes a shaft and a thread extending along and about the shaft. The thread has a height extending from a root to a tip thereof. The thread also has first and second portions disposed between the root and the tip. The second portion has a porous structure configured to promote bone ingrowth and has a porosity greater than that of the first portion.Type: GrantFiled: February 22, 2022Date of Patent: March 12, 2024Assignee: Stryker European Operations Holdings LLCInventors: Steven Willis, Steven F. Krause, Amir Ali Sharifi-Mehr, Brett Traficant, Erika Corbin, Lauren Barkauskas
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Publication number: 20240058140Abstract: A system for implanting an expandable interbody implant into an intervertebral space includes an elongated tool, the distal end of which is removably securable to the implant. The proximal end of the tool has an attachment interface for detachable securement to a plurality of different modules, each of which is adapted to effectuate a different function of the delivery system. The different functions include: grasping the implant delivery tool, providing an impaction surface for driving the advancement of the implant, supplying a graft material into the implant, and actuating the expansion of the implant. One of the modules may include a fluid delivery system for supplying hydraulic fluid to expand the implant. A fluid reservoir of the fluid delivery system may be oriented transverse to the cannula that delivers the fluid to the implant. A grafting block can be used to help pre-pack the implant with graft material.Type: ApplicationFiled: October 31, 2023Publication date: February 22, 2024Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, M. Todd Miller
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Publication number: 20240033103Abstract: A spinal implant for placement between vertebral bodies includes a first member for engaging one of the vertebral bodies, a second member for engaging an opposing one of the vertebral bodies, and at least one extendable support element for inducing movement of the entire first member away from the second member. The first member is connected to the second member such that the first member moves away from the second member by a larger distance at a first end of the implant than at a second end of the implant. A connecting member may connect the first and second members together at the second end of the implant. The connecting member may include one or more rotatable linkages, or the connecting member may be an extension of one of the first and second members slidably received within a track defined within the other of the first and second members.Type: ApplicationFiled: September 29, 2023Publication date: February 1, 2024Applicant: Howmedica Osteonics Corp.Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert
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Publication number: 20240008904Abstract: A system for percutaneous spinal fusion may include two spaced apart blades connected together by a coupling such that the blades define a percutaneous pathway from a skin incision to an implanted pedicle fastener. The coupling may be c-shaped and may have at least one flexible tab for engaging one or more holes along the length of the blades. If one of the blades becomes disconnected from the pedicle fastener, a supplemental access device may be provided comprising a tubular body having a channel therein for receiving the other of the blades. If both of the blades become disconnected, a supplemental access device may be provided comprising a gripping member received within a locking member. The gripping member may have two legs engageable with the pedicle fastener, and the locking member may move along the gripping member to prevent the legs from disengaging the pedicle fastener.Type: ApplicationFiled: September 18, 2023Publication date: January 11, 2024Inventors: Abram Reitblat, Joshua Stein, Amir Ali Sharifi-Mehr
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Patent number: 11857430Abstract: A spinal interbody device (IBD) includes a solid wall that at least partially defines a boundary of the IBD and a porous body connected to the solid wall. The porous body includes a plurality of sections that form at least a portion of both a superior and inferior bone interface side of the IBD. Each section of the porous body has a different porosity than an adjacent section such that the porosities increase toward a center of the IBD.Type: GrantFiled: June 22, 2021Date of Patent: January 2, 2024Assignee: Stryker European Operations Holdings LLCInventors: Collin Newman, Christian Karl Schultz, Steven Willis, Amir Ali Sharifi-Mehr, Oliver Buchert, Christopher P. Bell, Andrew Edward Ehlers, Anna Reza, Marc Gilles Long, Joseph Henry Robinson
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Publication number: 20230404599Abstract: A method of inserting a fastener includes positioning a portion of a stylet within a cannulated shaft of the fastener, advancing a tip of the stylet through a first bone and into a second bone, advancing a leading end of the fastener along the stylet through the first bone and into the second bone, and removing the stylet from the cannulated shaft of the fastener and the bone. In another embodiment, a method of inserting a fastener includes positioning a portion of a stylet within a cannulated shaft of the fastener, advancing a tip of the stylet into a bone to a first depth without advancing the fastener into the bone, advancing a leading end of the fastener along the stylet into the bone to a second depth without further advancing the stylet into the bone, and removing the stylet from the cannulated shaft of the fastener and the bone.Type: ApplicationFiled: June 5, 2023Publication date: December 21, 2023Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Shawn D. Stad, Paul R. Rochette, Nicole Renee Fallacaro, Lori Dombrowski, Mitch Baldwin, Christopher P. Bell
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Patent number: 11833062Abstract: A system for implanting an expandable interbody implant into an intervertebral space includes an elongated tool, the distal end of which is removably securable to the implant. The proximal end of the tool has an attachment interface for detachable securement to a plurality of different modules, each of which is adapted to effectuate a different function of the delivery system. The different functions include: grasping the implant delivery tool, providing an impaction surface for driving the advancement of the implant, supplying a graft material into the implant, and actuating the expansion of the implant. One of the modules may include a fluid delivery system for supplying hydraulic fluid to expand the implant. A fluid reservoir of the fluid delivery system may be oriented transverse to the cannula that delivers the fluid to the implant. A grafting block can be used to help pre-pack the implant with graft material.Type: GrantFiled: July 12, 2021Date of Patent: December 5, 2023Assignee: Howmedica Osteonics Corp.Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, M. Todd Miller
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Publication number: 20230380983Abstract: A spinal interbody implant includes an outer shell, a fill material disposed within the outer shell and a plurality of tubes extending from a first outer surface of the implant to a second outer surface of the implant through the fill material. The fill material is more porous than the outer shell and the plurality of tubes.Type: ApplicationFiled: October 13, 2021Publication date: November 30, 2023Inventors: Sean Corcoran, Keith Fava, Kenneth Dieselman, Jennifer Anne Moore, Amir Ali Sharifi-Mehr, Christopher P. Bell, Steven Willis, Russell Simms, Justyna Zielinska, Christian Karl Schultz, Clint Boyd, Eleftherios Louvis, Leonid Pavlovsky, Joseph Henry Robinson
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Patent number: 11806249Abstract: A spinal implant for placement between vertebral bodies includes a first member for engaging one of the vertebral bodies, a second member for engaging an opposing one of the vertebral bodies, and at least one extendable support element for inducing movement of the entire first member away from the second member. The first member is connected to the second member such that the first member moves away from the second member by a larger distance at a first end of the implant than at a second end of the implant. A connecting member may connect the first and second members together at the second end of the implant. The connecting member may include one or more rotatable linkages, or the connecting member may be an extension of one of the first and second members slidably received within a track defined within the other of the first and second members.Type: GrantFiled: January 26, 2021Date of Patent: November 7, 2023Assignee: HOWMEDICA OSTEONICS CORP.Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert
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Patent number: 11779377Abstract: A system for percutaneous spinal fusion may include two spaced apart blades connected together by a coupling such that the blades define a percutaneous pathway from a skin incision to an implanted pedicle fastener. The coupling may be c-shaped and may have at least one flexible tab for engaging one or more holes along the length of the blades. If one of the blades becomes disconnected from the pedicle fastener, a supplemental access device may be provided comprising a tubular body having a channel therein for receiving the other of the blades. If both of the blades become disconnected, a supplemental access device may be provided comprising a gripping member received within a locking member. The gripping member may have two legs engageable with the pedicle fastener, and the locking member may move along the gripping member to prevent the legs from disengaging the pedicle fastener.Type: GrantFiled: January 22, 2020Date of Patent: October 10, 2023Assignee: Stryker European Operations Holdings LLCInventors: Abram Reitblat, Joshua Stein, Amir Ali Sharifi-Mehr
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Patent number: 11771471Abstract: Hydraulically expandable spinal rods and methods of use thereof are disclosed. The spinal rod may include a piston rod, a static rod, and a hydraulic pressure chamber for accepting hydraulic fluid and causing the piston rod to move in an expansion direction relative to the static rod. Upon connection of the piston and static rods to a patient's spinal column, the hydraulic spinal rod may be expanded to aid in correction of an underlying spinal deformity.Type: GrantFiled: January 20, 2021Date of Patent: October 3, 2023Assignee: Stryker European Operations Holdings LLCInventors: Amir Ali Sharifi-Mehr, Oliver Buchert
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Publication number: 20230277731Abstract: Implants including non-resorbable frameworks and resorbable components, as well as methods of use thereof are disclosed. The embodiments include different combinations of a non-resorbable framework (in some case structural and in other cases non-structural), and a resorbable component embedded within and/or around the framework (again, in some cases structural and in other cases non-structural). The disclosed implants provide an efficient means of providing structural support for the vertebral bodies post-implantation, as well as encouraging resorption of the implant and fusion of the associated vertebral bodies without negative side effects and/or failure, such as subsidence of the implant or cracking/fracturing of a portion of the implant when implanted.Type: ApplicationFiled: February 24, 2023Publication date: September 7, 2023Inventors: Bradley William Paddock, Amir Ali Sharifi-Mehr, Adam Laurance Wollowick, Oliver Buchert, Matthew B. Havener, Robert Cipoletti, Steven Willis, Marc Gilles Long
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Patent number: 11707284Abstract: A stylet control system for selectively advancing and retracting a stylet includes a stylet having a first end and a second end, the second end being threaded, a screwdriver defining a bore for receiving a portion of the stylet and having a screw-engaging end for engaging a screw, the stylet being rotationally fixed relative to the screwdriver. The system includes a control device having a passage for receiving the screwdriver and having an inner portion defining a lumen for receiving the portion of the stylet, the inner portion being threaded for engaging the threaded second end of the stylet, when the screwdriver is rotated in the first rotation direction and the control device is prevented from rotating, the screwdriver advances the screw in the first axial direction and the stylet retracts in a second axial direction, opposite the first axial direction.Type: GrantFiled: March 6, 2020Date of Patent: July 25, 2023Assignee: K2M, Inc.Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Shawn D. Stad, Paul R. Rochette, Nicole Renee Fallacaro, Lori Dombrowski, Mitch Baldwin, Christopher P. Bell
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Publication number: 20230218321Abstract: A stylet feeder for connection to a surgical tool includes a base for attaching to a surgical tool, the base having a platform and a skirt extending distally from the platform. The stylet feeder also includes an extension protruding proximally from the platform of the base, the extension having a proximal end housing a pawl, the pawl having a distal end with a threaded portion. The base and the extension define a passage extending in a proximal-distal direction such that the stylet feeder is cannulated for accepting a stylet therethrough.Type: ApplicationFiled: January 11, 2023Publication date: July 13, 2023Inventor: Amir Ali Sharifi-Mehr
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Patent number: 11623027Abstract: Implants including non-resorbable frameworks and resorbable components, as well as methods of use thereof are disclosed. The embodiments include different combinations of a non-resorbable framework (in some case structural and in other cases non-structural), and a resorbable component embedded within and/or around the framework (again, in some cases structural and in other cases non-structural). The disclosed implants provide an efficient means of providing structural support for the vertebral bodies post-implantation, as well as encouraging resorption of the implant and fusion of the associated vertebral bodies without negative side effects and/or failure, such as subsidence of the implant or cracking/fracturing of a portion of the implant when implanted.Type: GrantFiled: December 19, 2019Date of Patent: April 11, 2023Assignee: Stryker European Operations Holdings LLCInventors: Bradley William Paddock, Amir Ali Sharifi-Mehr, Adam Laurance Wollowick, Oliver Buchert, Matthew B. Havener, Robert Cipoletti, Steven Willis, Marc Gilles Long
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Patent number: 11618135Abstract: A screwdriver for driving a screw in bone includes a first body configured to engage a tulip of the screw, a first central bore extending through the first body, a second body having a second central bore extending through the second body and an external surface having a spline member positioned at least partially within the cavity, an inner shaft configured to drive a screw into bone and being rotatably coupled with the second body, a spring-biased pawl engageable with the spline member of the second body, a collar rotatable relative to the first body and the second body and having a cammed inner surface, when the collar is rotated in a first direction about the first body, the cammed inner surface pushes the spring-biased pawl into engagement with the spline member to rotatably couple the first body and the second body.Type: GrantFiled: March 4, 2020Date of Patent: April 4, 2023Assignee: K2M, Inc.Inventors: Amir Ali Sharifi-Mehr, Steven F. Krause
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Publication number: 20230077043Abstract: An expandable rod system includes a first rod portion having an internal cavity, a second rod portion sealingly positioned within the internal cavity of the first rod portion and moveable in a first axial direction relative to the first rod portion, and an osmotic chamber for receiving an osmotic agent to facilitate movement of the second rod portion to expand the rod system. The rod system includes a lock assembly engageable with the second rod portion to prevent the second rod portion from moving in a second axial direction. The lock assembly includes a tapered ramped portion and a bearing member that is moveable within the tapered ramped portion such that when compression forces are imparted on the second rod portion, the bearing member becomes wedged in the tapered ramped portion.Type: ApplicationFiled: September 13, 2022Publication date: March 9, 2023Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Andrew Poutiatine, Philip Harris Frank, Charles L. Bush, JR.
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Patent number: 11589941Abstract: A virtual surgical cutting guide may have first and second slots defining first and second axes respectively. The virtual surgical cutting guide may be positioned away from a vertebral body such that the first and second axes intersect at a distal point located in an interior of the vertebral body. The virtual surgical cutting guide may include the virtual surgical cutting guide with first and second cutting instruments. A method of performing a pedicle subtraction osteotomy may include the steps of placing the virtual surgical cutting guide over the first and second cutting instruments.Type: GrantFiled: September 29, 2020Date of Patent: February 28, 2023Assignee: Stryker European Operations Holdings LLCInventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Bryan Weiner, M. Todd Miller, Steven F. Krause, Michael Chang
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Patent number: D989310Type: GrantFiled: May 23, 2022Date of Patent: June 13, 2023Assignee: K2M, Inc.Inventors: Amir Ali Sharifi-Mehr, Oliver Buchert, Christopher P. Bell