Don Edward Walker

US Patent:

20070255413, Nov 1, 2007

Filed:

Apr 27, 2006

Appl. No.:

11/412671

Inventors:

Jason Edie - Memphis TN, US
Lloyd Cooper - Birmingham AL, US
Don Walker - Muscle Shoals AL, US

International Classification:

A61F 2/44
A61B 17/58

US Classification:

623017160, 606090000, 623017110

Abstract:

An intervertebral spacer is inserted between vertebral members in a compact configuration and expanded post-insertion to contact the adjacent vertebral members. The intervertebral spacer comprises a first member and a second member movable with respect to the first member between retracted and extended positions.

US Patent:

20070255415, Nov 1, 2007

Filed:

May 1, 2006

Appl. No.:

11/415042

Inventors:

Jason Edie - Memphis TN, US
Lloyd Cooper - Birmingham AL, US
Jerrod Windham - Auburn AL, US
John Dawson - Chicago IL, US
Don Walker - Muscle Shoals AL, US

International Classification:

A61F 2/44

US Classification:

623017160, 623017110, 606090000

Abstract:

An intervertebral spacer is inserted between vertebral members in a compact configuration and expanded post-insertion to contact the adjacent vertebral members. The intervertebral spacer comprises a first member and a second member movable with respect to the first member between retracted and extended positions.

US Patent:

20080058930, Mar 6, 2008

Filed:

Jul 21, 2006

Appl. No.:

11/491379

Inventors:

Jason A. Edie - Memphis TN, US
Lloyd Guyton Bowers Cooper - Birmingham AL, US
Jerrod Bradley Windham - Auburn AL, US
John Caleb Dawson - Chicago IL, US
Don Byron Walker - Muscle Shoals AL, US
Barry K. Patterson - North Charleston SC, US

International Classification:

A61F 2/44

US Classification:

623 1711

Abstract:

The application is directed to implants that are adjustable between collapsed and expanded orientations. The collapsed orientation includes a smaller height to facilitate insertion into the patient. The expanded orientation includes a larger height for spacing and/or supporting the vertebral members. The implants generally include three or more separate sections that are nested together in the collapsed orientation. The sections move outward away from each other in the expanded orientation. An expansion means may be operatively connected to one or more of the sections to move the implants between the orientations. Methods of use are also included for moving the implants between the collapsed and expanded orientations.