DAVID G EVANS, OD
Optometry at Primacy Pkwy, Memphis, TN

6660039, Dec 9, 2003

Jan 29, 2002

10/060014

David Lee Evans - Bartlett TN
Greg Marik - Germantown TN
Christopher Patrick - Memphis TN
Albert J. Pothier - Memphis TN

Smith Nephew, Inc. - Memphis TN

A61F 230

623 2029

A mobile bearing knee prosthesis enables a surgeon to convert a mobile bearing insert having articular surfaces, supported by a tibial base plate or tray from a rotating and translating prosthesis to one that rotates only. This conversion is accomplished with a fastener or locking member that connects through an opening in the insert to the tibial base plate. This prosthesis can be used as part of a total knee surgery when the surgeon chooses to use a prosthesis that incorporates a movable articular surface. In one embodiment, a projecting portion extends proximally from the insert and cooperates with a cam on the femoral component. The projecting portion can be a post extending up from the proximal surface of the insert and the femoral component includes an intercondylar surface that may contact the post to constrain the relative motion between the femoral component and the insert. In another embodiment, the insert is a two part assembly that includes a larger member with a central opening and a smaller member that fits the opening.

4969895, Nov 13, 1990

Jan 23, 1989

7/300994

William McLeod - Memphis TN
Paul Wisnewski - Memphis TN
David Evans - Memphis TN
Mark Gosney - Memphis TN

Richards Medical Company - Memphis TN

A61F 504

606 96

An instrument for determining the variation in tension of a ligament graft extending between first and second proposed fixation sites positioned on first and second articulated bones, respectively, comprises a yoke which carries a device for securing the yoke to one of the first and second bones. A yoke plate is rotatably carried by the yoke. A main housing is adapted for connection to the yoke plate. A sled is slidably carried by the main housing. The sled is adapted for connection to the ligament graft. A mechanism is provided for adjusting the position of the sled relative to the housing so as to place a desired degree of tension on the ligament graft. A transducer is associated with the mechanism for adjusting for determining changes in tension, if any, from the desired degree of tension as the first and second bones are moved relative to one another.

7182784, Feb 27, 2007

Sep 18, 2003

10/666477

David L. Evans - Bartlett TN, US
Gordon Hunter - Memphis TN, US
Shilesh C. Jani - Germantown TN, US

Smith & Nephew, Inc. - Memphis TN

A61F 2/44

623 1715

Orthopedic implants which include the components of zirconium or zirconium-based alloys having surfaces coated with oxidized zirconium or alternatively, other orthopedic implants comprising abrasion resistant surfaces contacting surfaces of cross-linked polyethylene are disclosed. Such implants provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc. , but also useful in other implant devices as well. The implants also find use as vertebral disc prostheses.

5312411, May 17, 1994

Oct 27, 1992

7/967161

John K. Steele - Memphis TN
Thomas A. Carls - Memphis TN
David L. Evans - Bartlett TN
Carol D. Taylor - Memphis TN
Philippe Cartier - Paris, FR
James Andrews - Birmingham AL
William Kennedy - Sarasota FL

Smith & Nephew Richards, Inc. - Memphis TN

A61B 1756

606 88

A surgical instrument for shaping the distal femur of a patient to receive a unicondylar prosthetic component includes a cutting guide body that carries a pair of cylindrically shaped openings in the guide body, each of the openings having a central longitudinal axis and the respective axes of the openings forming an acute angle. An annular bushing is removably received in a selected one of the cylindrical openings during a cutting of the distal femur. A bone cutting reamer registers with a central cylindrical opening in the bushing. The bone cutting reamer has an annular shoulder that abuts the top of the bushing to define the depth of cut. During use, the surgeon positions the cutting guide body over a diseased condyle of the patient's distal femur. The surgeon then sequentially places the bushing and its associated bone cutting reamer into one of the selected openings of the cutting guide body. After placing the bone cutting reamer in the second opening of the guide body, the surgeon has formed two overlapping circular cuts which form an elongated oval shaped and three-dimensionally convex surface for receiving the unicondylar prosthesis.

5676704, Oct 14, 1997

Nov 27, 1995

8/563219

Michael D. Ries - Cooperstown NY
Brian Austin - Germantown TN
David L. Evans - Bartlett TN
Steve Miller - Memphis TN
Jeff Shea - Memphis TN

Smith & Nephew, Inc. - Memphis TN

A61F 230

623 18

An improved acetabular cup prosthesis has a cup body with correspondingly shaped outer convex and inner concave surfaces. The cup body has an apex and a base that defines a plane. The cup body outer convex surface has first and second curved, shaped portions positioned in between the base and the apex. In one embodiment, the outer convex surface has specially shaped portion in between the rim and a distance about one third of the distance of the rim to the apex. This specially shaded portion forms an interference fit with a patient's acetabular socket.

5782928, Jul 21, 1998

Oct 23, 1996

8/735516

Michael D. Ries - Cooperstown NY
Brian Austin - Germantown TN
David L. Evans - Bartlett TN
Steve Miller - Memphis TN
Jeff Shea - Memphis TN

Smith & Nephew, Inc. - Memphis TN

A61F 234

623 22

An improved acetabular cup prosthesis has a cup body with inner convex and outer concave surfaces. The cup body has an apex and a base that defines a plane. The cup body outer convex surface has a toroidally shaped portion between the base and the transition. In one embodiment, the outer convex surface is toroidally shaped between the rim and a distance about one third of the distance of the rim to the apex. In another embodiment, a plurality of cup bodies are provided in a range of sizes between about 40 mm and 80 mm. Each cup body has a companion rotary reamer that is correspondingly shaped. The companion cup body is oversized between about 1 mm and 3 mm so that a generally constant change in volume is provided for all cup sizes between 40 mm and 80 mm.