Jeffrey K Farris

US Patent:

8142435, Mar 27, 2012

Filed:

Feb 19, 2009

Appl. No.:

12/388581

Inventors:

Daniel Refai - Saint Louis MO, US
Jeffrey A. Farris - Berne IN, US

Assignee:

Aesculap Implant Systems, LLC - Center Valley PA

International Classification:

A61B 17/70

US Classification:

606 86A, 606 99, 606 90

Abstract:

The surgical instrument includes a handle and a housing member that has a first end that is fixed to the handle and a second end that is configured to receive an engagement member. The surgical instrument also has an implant holding mechanism that is operatively associated with the housing member and the handle. The surgical instrument further includes a length control mechanism that has a knob, a rod member and a toothed member. The toothed member is fixed to one end of the rod member and the knob is attached to the other end. The surgical instrument also has a locking mechanism that includes a knob and a rod member having a proximal end to which the knob is attached and a distal end that is configured to detachably couple to a locking device. A surgical method for using the surgical instrument and a bone spacing kit is also disclosed.

US Patent:

8142441, Mar 27, 2012

Filed:

Oct 16, 2008

Appl. No.:

12/252552

Inventors:

Daniel Refai - Saint Louis MO, US
Jeffrey T. Ebersole - Columbia City IN, US
Jeffrey A. Farris - Berne IN, US

Assignee:

Aesculap Implant Systems, LLC - Center Valley PA

International Classification:

A61B 17/58
A61F 2/00

US Classification:

606 99

Abstract:

The surgical instrument includes a handle assembly and an elongate body that has first and second ends with the first end being located adjacent to the handle assembly and the second end being moveably connected to an implant engagement assembly. The surgical instrument also has a length control mechanism that includes a gripping portion, a drive shaft and a gear assembly. The surgical instrument further has a locking mechanism that includes a gripping portion, a connecting rod and a coupling end. The length control mechanism functions to adjust the overall length of an implant that is held by the implant engagement assembly before being implanted in vivo. The locking mechanism operates to secure the overall length of the implant following final length adjustment and implantation. A surgical method for using the surgical instrument, a method of fabrication and a spinal implant insertion kit is also disclosed.

US Patent:

8182537, May 22, 2012

Filed:

Oct 30, 2007

Appl. No.:

11/928532

Inventors:

Daniel Refai - Saint Louis MO, US
Jeffrey A. Farris - Berne IN, US

Assignee:

Aesculap Implant Systems, LLC - Center Valley PA

International Classification:

A61F 2/44

US Classification:

623 1716

Abstract:

The vertebral body replacement device includes a body member and a central rod member that has two threaded portions and is configured to be operatively associated with the body member. The device also includes a first end member and a second end member with the end members being configured to threadingly engage the threaded portions of the central rod member. The body member and the two end members are further constructed to inhibit rotational movement of the two end members when the device is positioned within a space within a spine as the two end members will engage the adjacent respective vertebral bodies following rotational actuation of the central rod member causing the end members to move in an axial direction relative to the body member, thereby allowing the two end members to apply a force to the two vertebral bodies. A surgical method using the device is also disclosed.

US Patent:

20090112325, Apr 30, 2009

Filed:

Oct 30, 2007

Appl. No.:

11/928553

Inventors:

Daniel REFAI - Saint Louis MO, US
Jeffrey A. FARRIS - Berne IN, US

Assignee:

BIOSPINE, LLC - Columbia City IN

International Classification:

A61F 2/44

US Classification:

623 1716, 623 1715

Abstract:

The footplate member includes an end surface, a sidewall that is attached to the end surface, and an orientation mechanism that is designed to align the footplate member in a certain position relative to at least one of the two end members of the vertebral body replacement device. The orientation mechanism includes a plurality of tabs located on an end wall of each end member and corresponding slots located along the edge of the sidewall, with the tabs and slots being sized and positioned to mate. The footplate member also includes a locking mechanism designed to couple the footplate member to an end member prior to the implantation of the vertebral body replacement device within a space within a spinal column. A method for assembling a vertebral body replacement device and a method for using a footplate member in a vertebral body replacement device is also disclosed.