Stephen G Cook

US Patent:

8012217, Sep 6, 2011

Filed:

Jan 13, 2009

Appl. No.:

12/319869

Inventors:

Peter Strzepa - Austin TX, US
Stephen D Cook - New Orleans LA, US

Assignee:

Fellowship of Orthopaedic Researchers, LLC - Metairie LA

International Classification:

A61F 2/42

US Classification:

623 2118

Abstract:

Implant devices, and method of using the same, are provided. The implant devices have a head and a stem. The head has an upper surface, an anterior surface, a posterior surface, a lateral surface and a lower surface. The anterior surface, the lateral surface, and the lower surface are approximately perpendicular to and intersect each other. The anterior surface and the posterior surface are approximately parallel to each other. Preferably, the upper surface has a general shape of at least a portion of a superior articular surface of a talus and at least a portion of a medial articular surfaces of a talus. The stem has a truncated conical portion and a cylindrical portion. The cylindrical portion is affixed to the lower surface of the head, and the truncated conical portion is affixed to the cylindrical portion.

US Patent:

8092530, Jan 10, 2012

Filed:

Jan 14, 2010

Appl. No.:

12/687672

Inventors:

Peter Strzepa - Austin TX, US
Stephen D. Cook - New Orleans LA, US

Assignee:

MoiRai Orthopedics, LLC - Metairie LA

International Classification:

A61F 2/08
A61F 2/28

US Classification:

623 1412, 623 1611, 623 1811

Abstract:

Cartilage implant devices having oval articular ends are provided. The articular ends have a convex upper face and a concave lower face. The convex upper face has a first circular pitch radius and a first circular roll radius. The concave lower face has a first surface comprising a second circular pitch radius and a second circular roll radius, and at least two second surfaces each second surface having a third circular pitch radius and a third circular roll radius. The convex upper face blends into a rim, wherein at least a first and second portion of the rim extends at least a first distance along the vertical axis and a third and fourth portion of the rim tapers inward along the vertical axis, the rim blends into the concave lower face. The implant devices further have a stem extending from the concave lower face away from the convex upper face.

US Patent:

8152847, Apr 10, 2012

Filed:

Jan 14, 2010

Appl. No.:

12/687702

Inventors:

Peter Strzepa - Austin TX, US
Stephen D. Cook - New Orleans LA, US

Assignee:

MoiRai Orthopaedics, LLC - Metairie LA

International Classification:

A61F 2/08
A61F 2/28

US Classification:

623 1412, 623 1611, 623908, 623 2351

Abstract:

Methods of using cartilage implant devices are provided. The methods include locating articular cartilage having a lesion, and utilizing an implant having dimensions compatible with the lesion. The method further includes forming a cavity in the articular cartilage, subchondral bone, and cancellous bond, and engaging the implant with the cavity so that the lower face of the articular end of the implant abuts against the subchondral bone, and the stem of the implant abuts against the cancellous bone.

US Patent:

8177842, May 15, 2012

Filed:

Mar 3, 2009

Appl. No.:

12/396872

Inventors:

Peter Strzepa - Austin TX, US
Stephen D. Cook - New Orleans LA, US

Assignee:

MoiRai Orthopaedics, LLC - Metairie LA

International Classification:

A61F 2/30
A61F 2/28

US Classification:

623 1412, 623 1811, 623 2344

Abstract:

Implant devices, and method of using the same, are provided. The implant devices have circular, or oblong, articular ends. The articular ends have a convex upper face and a concave lower face, the convex upper face blending to the concave lower face, and the concave lower face having a curvature less than the curvature of the convex upper face. The implant devices further have a stem extending from the concave lower face away from the upper face, the stem having a maximum radius at the convex lower face and tapering to lesser radius along the length of the stem.

US Patent:

8591581, Nov 26, 2013

Filed:

Jan 20, 2012

Appl. No.:

13/354573

Inventors:

Peter Strzepa - Austin TX, US
Stephen D. Cook - New Orleans LA, US

Assignee:

Moirai Orthopedics, LLC - Metaire LA

International Classification:

A61F 2/08
A61F 2/28

US Classification:

623 1412, 623 1611, 623 1811, 623908, 623 2351

Abstract:

Methods of using cartilage implant devices are provided. The methods include locating articular cartilage having a lesion, and utilizing an implant having dimensions compatible with the lesion. The method further includes forming a cavity in the articular cartilage, subchondral bone, and cancellous bond, and engaging the implant with the cavity so that the lower face of the articular end of the implant abuts against the subchondral bone, and the stem of the implant abuts against the cancellous bone.

US Patent:

8043375, Oct 25, 2011

Filed:

Mar 6, 2008

Appl. No.:

12/074770

Inventors:

Peter Strzepa - Austin TX, US
Stephen D. Cook - New Orleans LA, US

Assignee:

MoiRai Orthopaedic, LLC - Metairie LA

International Classification:

A61F 2/08
A61F 2/28

US Classification:

623 1412, 623 1611

Abstract:

Cartilage implant devices are provided herein. The implant devices have circular, or oblong, articular ends. The articular ends have a convex upper face and a concave lower face, the convex upper face blending to the concave lower face, and the concave lower face having a curvature less than the curvature of the convex upper face. The implant devices further have a stem extending from the concave lower face away from the upper face, the stem having a maximum radius at the convex lower face and tapering to lesser radius along the length of the stem.

US Patent:

20050149188, Jul 7, 2005

Filed:

Feb 7, 2003

Appl. No.:

10/503452

Inventors:

Stephen Cook - Pass Christian MS, US
Kirk Bailey - Blairstown NJ, US
Patrick Rousseau - Hardwick NJ, US

International Classification:

A61F002/44

US Classification:

623017110

Abstract:

An anterior spinal implant includes a superior end face, an inferior end face and a sidewall extending between the superior end face and the inferior end face. The superior end face and the inferior end face are convex. In one application, the superior and inferior end faces are convex. The sidewall includes a convexly curved leading portion, a convexly curved trailing portion and a pair of substantially planar side portions. The superior and inferior end faces transition in a sagittal plane from a first radius of curvature to a second radius of curvature. The first radius of curvature is smaller than the second radius of curvature. The apexes of the superior and inferior end faces are offset from a center of the implant.

US Patent:

20090018663, Jan 15, 2009

Filed:

Jun 4, 2008

Appl. No.:

12/132919

Inventors:

Stephen D. Cook - New Orleans LA, US
Kirk J. Bailey - Blairstown NJ, US
Gretchen Dougherty Shah - Wayne NJ, US

Assignee:

EBI, LLC - Parsippany NJ

International Classification:

A61F 2/44

US Classification:

623 1716, 623 1711

Abstract:

An intervertebral implant and associated method. The intervertebral implant can include a first component having a first articulating surface and a first bone engagement surface for engaging a first vertebra, and a second component having a second articulating surface and a second bone engagement surface for engaging a second vertebra adjacent to the first vertebra. The first and second articulating surfaces can articulate with each other for substantially replicating a natural spinal movement. The first and second bone engagement surfaces can define an outer surface substantially shaped as an envelope of two intersecting cylinders. In one aspect, the first and second articulating surfaces can have substantially equal radii of curvature in a coronal plane and different radii of curvature in a sagittal plane.