Alphatec Spine, Incorporated

Rachiotek, LLC

Yale University

Applied Spine Technologies, Inc.

Other

Bvi Holdings, LLC

Jens Peter Timm

Manohar M Panjabi

Carmen Walters

George Malcolmson, Ii

Bryan Hildebrand

Thomas L Purcell

Anand Parikh

Wally Gillespie

Yang Cheng

Martin Joseph Bouliane

Nathan Meyer

Ernest Corrao

Nirali Patel

Roger P Jackson

Javier Garcia-Bengochea

Jared Arambula

Clark Hutton

Stephen W Zlock

Carl Lauryssen

Morgan Packard Lorio

Jonathan T Costabile

Garrett Gleeson

Jeffrey White

Stephen A Maguire

Fred Murillo

Ali Araghi

Jeffrey Allen Guyer

Ronald Callahan

Ronald T Callahan, Ii

Stephen Maguire

George F Malcolmson

Danielle Richterkessing

Fred Murrillo

Terrence Brennan

Alvin Johnson

Manobar M Panjabi

The instruments and methods of the present disclosure include an outer shaft, an inner shaft, a roller, and an actuator. In some examples, the outer shaft includes a lumen extending from a proximal end to a distal end. The inner shaft is disposed within the lumen. The roller rotatably is coupled with the distal end at an axis and configured to engage the fixation rod. The actuator operably couples with the inner shaft to translate the inner shaft within the lumen and cause rotation of the roller to impart linear movement on the fixation rod.

Instrument and method for in situ rod adjustment

A stand-alone interbody fixation system having a cage, anterior fixation blade and posterior fixation blade. The cage includes an annular side wall with an open interior and upper and lower surfaces, the cage being configured to fit between end plates of adjacent vertebrae. The anterior fixation blade includes an anterior alignment boss with two opposing outward extending anterior blades with end plate penetrating tips configured to fit within the open interior of the cage. The posterior fixation blade includes a posterior alignment boss with two opposing outward extending posterior blades with end plate penetrating tips configured to fit within the open interior of the cage. The anterior alignment boss and posterior alignment boss being rotatably coupled to each other and with a first opening and a second opening in the annular side wall opposite the first opening. The anterior and posterior fixation blades are counter-rotating blades and the anterior alignment boss and posterior alignment boss are configured to receive or engage a blade activation tool having an anterior engagement portion and a posterior engagement portion configured to rotate the anterior and posterior fixation blades from a stowed position to a deployed condition.

Stand-alone interbody fixation system

Spine stabilization devices, systems and methods are provided in which a single resilient member or spring is disposed on an elongate element that spans two attachment members attached to different spinal vertebrae. The elongate element passes through at least one of the two attachment members, permitting relative motion therebetween, and terminates in a stop or abutment. A second resilient member is disposed on the elongate element on an opposite side of the sliding attachment member, e.g., in an overhanging orientation. The two resilient members are capable of applying mutually opposing urging forces, and a compressive preload can be applied to one or both of the resilient members.

Method for stabilizing a spine

A method of securing a fixation rod to a screw assembly that includes a screw, a bushing, and a receiver includes the steps of inserting the fixation rod within a receiver portion of the bushing and the receiver, advancing a locking member into contact with an engagement surface on a proximal portion of the bushing, applying a force with the locking member to increase an amount of friction between a distal engagement surface of the bushing and a head portion of the screw, and increasing the force to deform a deformable portion of the bushing and increase an amount of friction between the fixation rod and the bushing.

Screw assembly with deformable bushing

An instrument for correction of spinal deformities includes an inner member with a proximal portion configured to receive a corrective force and a distal coupling portion configured to transfer the corrective force to a spinal implant in a vertebra. A slot extends transversely through the coupling portion and is configured to guide a fixation rod into the spinal implant. A threaded sleeve includes an external thread and a thru-bore that slides relative to the proximal portion. An outer member couples with the proximal portion and threadably engages the external thread to apply a reduction force as the outer member rotates relative to the inner member. A reduction blade includes a proximal interlocking portion that removably couples with the threaded sleeve and a distal rod engagement feature configured to engage the fixation rod and transfer the reduction force to reduce the fixation rod into the spinal implant.

Spinal deformity correction instruments and methods

A bushing for a bone screw assembly includes a distal portion, a receiver portion, and a proximal portion. The distal portion includes a distal engagement surface that engages with a head of a bone screw. The receiver portion receives a fixation rod. The proximal portion includes a proximal engagement surface that engages with a locking member and a deformable portion that deforms from a first configuration to a second configuration based on a force applied by the locking member.

A system for surgically coupling the spinous processes includes a first plate, a second plate, a pair of semi-rigid guide members, and a coupler. The first plate engages with a first lateral side of the spinous processes. The pair of semi-rigid guide members attaches to the first plate for inserting the first plate between the spinous processes. The second plate includes a pair of apertures that slide over the pair of semi-rigid guide members engage a second lateral side of the spinous processes. The coupler couples the first plate and the second plate together.

Interspinous process device and method

A surgical implant is provided that includes first and second abutment surfaces between which are positioned a force imparting mechanism. A sheath is positioned between the first and second abutment surfaces, and surrounds the force imparting mechanism. The sheath is fabricated from a material that accommodates relative movement of the abutment members, while exhibiting substantially inert behavior relative to surrounding anatomical structures. The sheath is generally fabricated from expanded polytetrafluoroethylene, ultra-high molecular weight polyethylene, a copolymer of polycarbonate and a urethane, or a blend of a polycarbonate and a urethane. The force imparting member may include one or more springs, e.g., a pair of nested springs. The surgical implant may be a dynamic spine stabilizing member that is advantageously incorporated into a spine stabilization system to offer clinically efficacious results.

Surgical implant devices and systems including a sheath member

Method for stabilizing a spinal segment

A curvilinear spinal access device having an expandable working portal. The device includes a slide having a channel with an open top and a movable top sized to cover the open top of the channel forming an expandable working portal with a proximal end and a distal end. The movable top can be moved between a closed position and an open position, wherein in the closed position the movable top blocks direct visualization between the proximal end and the distal end of the expandable working portal and in the open position movement of the movable top results in direct visualization from the proximal end to the distal end of the expandable working portal.

Curvilinear spinal access method and device

A polyaxial bone screw assembly includes a threaded shank body having an upper head portion with a mating segment and a first partial spherical surface, a retainer structure being mateable with the mating segment of the upper head portion, the retainer structure having a second partial spherical surface such that when mated, the first and second partial spherical surfaces form a spherical ball member, a receiver defining an open channel and having a base with a seating surface partially defining a cavity, the open channel communicating with the cavity, the cavity communicating with an exterior of the base through an opening sized and shaped to receive the shank upper head portion therethrough, and a bushing sized and shaped to fit within open channel and cavity, the bushing having a lower rounded surface engageable with a top surface of the spherical ball member formed by the shank and retainer structure.

Polyaxial bone screw assembly

A dynamic spine stabilization device is provided that includes at least one force imparting member, e.g., a spring. The force imparting member is adapted to deliver a force of between about 150 lb/inch and 450 lbs/inch, and restrict the relative travel distance between said first and second pedicles to a distance of between about 1.5 mm and 5 mm. The spinal stabilization devices also have a minimal impact on the location of the center of rotation for the spinal segment being treated. By providing resistance in the noted range and restricting the travel distance to the noted range, it has been found that the stabilization device provides a desired level of stabilization, as reflected by range of motion values that closely approximate pre-injury range of motion levels. In addition, the resistance levels are not so high as to alter the location of the center of rotation of the treated spinal segment from its normal anatomical location to levels previously obtained, thereby permitting substantially unimpeded angular motion despite the posterior presence of a stabilization device.

Dynamic spine stabilizer

Growing community of inventors

Carlsbad, CA, United States of America

Jens Peter Timm