K2m, Inc.

Amicus Design Group, LLC

Adam A Pike

Bret M Berry

Randall Feldman Lee

Richard D Guyer

Jack E Zigler

Lee F Randall

An intervertebral prosthesis includes: a body including first and second spaced apart major surfaces defining a longitudinal axis extending substantially normal to said surfaces and at least anterior and posterior sidewalls extending therebetween, the first and second major surfaces for engaging endplates of first and second vertebral bones of a spine; an aperture extending from within the body, transversely to the longitudinal axis, and opening at a major surface; an anchoring element disposed within the aperture and including a threaded shaft; and a gear disposed adjacent to and in meshed, threaded communication with the threaded shaft of the anchoring element such that rotation of the gear causes rotation of the anchoring element, and a driving rotational force on the gear causes the anchoring element to rotate, deploy from the body, and thread into a vertebral bone transverse to the longitudinal axis of the body.

Interbody vertebral prosthetic device with self-deploying screws

An apparatus for inserting an intervertebral prosthesis within a spine of a mammal includes: a handle including a drive nut operating to produce rotational torque in response to user-input about a central axis; a first drive shaft including a proximal end in communication with the drive nut, receiving rotational torque therefrom, and imparting rotational torque to the first drive shaft about a first axis, which is laterally offset from the central axis; and a distal end of the first drive shaft including a first drive head; and a chuck disposed at a distal end of the tool for engaging the intervertebral prosthesis during implantation, wherein the first drive shaft extends through the chuck and the first drive head engages a first gear of the intervertebral prosthesis, such that rotation of the first gear causes rotation and deployment of a first anchoring element of the intervertebral prosthesis.

Insertion tool for inter-body vertebral prosthetic device with self-deploying screws

A system and method for inserting an implant into a cavity is disclosed, which may include advancing an implant insertion instrument toward a pair of adjacent bodies, the implant insertion instrument having two opposed ramps, wherein each ramp has a distal tip and wherein the longitudinal axes of the opposed ramps are separated by an initial angle; inserting the distal tips of the opposed ramps between the adjacent bodies, thereby creating an initial interbody cavity between the adjacent bodies; expanding the interbody cavity while maintaining the initial angle between the longitudinal axes of the opposed ramps; placing the implant in a final location between the adjacent bodies; transferring a compressive force urging the adjacent bodies together from the opposed ramps to the implant; and extracting the implant insertion instrument from the interbody cavity.

Apparatus and methods for inserting an implant

An apparatus for inserting an intervertebral prosthesis within a spine of a mammal includes: a handle disposed at a proximal end of the tool and including a drive nut operating to produce rotational torque in response to user-input about a central axis; a first drive shaft including proximal and distal ends; the proximal end in communication with the drive nut, receiving rotational torque therefrom, and imparting rotational torque to the first drive shaft about a first axis, which is laterally offset from the central axis; and the distal end of the first drive shaft including a first drive head; and a chuck disposed at a distal end of the tool and being sized and shaped to engage the intervertebral prosthesis during implantation, wherein the first drive shaft extends through the chuck and the first drive head engages a first gear of the intervertebral prosthesis, such that rotation of the first gear causes rotation and deployment of a first anchoring element of the intervertebral prosthesis.

Methods and apparatus for inserting an implant into a cavity provide for: disposing an implant between opposing first and second ramps of an implant insertion instrument; orienting first and second vertebral contact surfaces of the ramps such that they define an initial, non-zero angle therebetween; inserting the first and second ramps into an intervertebral space of a spine; advancing the implant distally along and between the ramps such that the first and second vertebral contact surfaces of the first and second ramps separate while holding the initial angle substantially constant.

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Bountiful, UT, United States of America

Adam A Pike