Xylon LLC

Other

Smith + Nephew

Louis A. Serafin, Jr. Trust

Signal Medical Corporation

Louis A. Serefin, Jr. Trust

Smith & Nephew, Inc.

Serafin, Louis A., Jr.

Serafin, Louis a Jr. Trust Represented by Serafin, Martha L., Trustee

Gerald J Jerry

Louis A Serafin, Jr

Nicholas Hamilton Burlingame

Brian William McKinnon

Zachary Christopher Wilkinson

Michael D Ries

Abraham Biglari Salehi

Nathaniel Milton Lenz

Brian W Mckinnon

Jonathan Kirk Nielsen

Richard Michael Smith

Jonathan Kirk Nelsen

Nicholas H Burlingame

Louis A Serafin

Abraham B Salehi

A tibial-tray system may include a tibial tray and a spline configured to extend proximally from the tibial tray and guide a femoral component of a knee system. The tibial-tray system may also include an adapter configured for attachment to the tibial tray and the spline. A distal end of the adapter may have a position relative to a position of a proximal end of the adapter such that the spline extends upward from the tibial tray at a predetermined position.

Tibial-tray system

Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.

Cruciate-retaining knee prosthesis

Prosthetic knee implant or implant component is made with a magnesium oxide stabilized transformationally toughened zirconia.

Ceramic manufactures

Fired magnesium oxide stabilized transformation toughened zirconia ceramic can be for or of an implant or implant component of a one-piece unicompartmental knee spacer device; a multi-piece unicompartmental joint aligning device; a temporal mandibular joint cap implant; a vertebra cap; an ankle joint ensemble or component; a bridge, a tooth or teeth; a patellofemoral joint implant; a tibial tray for a knee joint replacement implant; an intermediary articulation plate for a tibial tray and liner for a knee joint replacement implant; or the intermediary articulation plate assembled in combination with the tibial tray.

A tibial tray system includes a tibial tray configured for attachment to a surgically-prepared surface of the proximal end of the tibia. The tibial tray includes a track disposed in a generally A-P direction. The tibial tray system also includes a spline configured to engage the track and to be positionable in at least one location along the track. The spline includes a bearing surface that is configured to contact a femoral component of the knee prosthesis to guide movement of the femoral component during extension and flexion of the knee.

Tibial tray system and method of implantation

A ceramic body prosthetic implant or prosthetic implant component of a magnesium oxide stabilized transformation toughened zirconia (Mg-TTZ) ceramic can be made by providing a bisqued initial green body of ceramic by providing a powdered ceramic material, which substantially is a monoclinic zirconia having magnesium oxide for a stabilizer, and, without employing a binder additional to the powdered ceramic to do so, compressing the material in its powder form through a cold isostatic press operation to form a raw, pressed initial green body, and then heating the raw, pressed initial green body to a bisque stage to provide the bisqued initial green body. Then, the following further steps are carried out: without embedding the bisqued initial green body of ceramic in an embedding mass, machining the bisqued initial green body to provide a machined, bisqued green ceramic body such that the machined, bisqued green ceramic body has a shape, which is a precursor shape essentially analogous to, being of the same proportions as, the shape of, but larger than, the ceramic portion of a fired predetermined finished ceramic body prosthetic implant or prosthetic implant component; and then firing the machined, bisqued green ceramic body to provide a fired Mg-TTZ ceramic body product, which is the same size and shape or essentially the same size and shape as the ceramic portion of the fired predetermined finished ceramic body prosthetic implant or prosthetic implant component.

Implant body has a groove into which an outer ring is fitted. The body and ring are distinct solid parts both during and after assembly. A 'flat' wall may be provided for the groove. The outer ring is annularly continuous and may be under tension, with the body under correspondent compression from the ring. An arthroplasty device can be provided.

Implant body with ring

Ceramic bodies can be made by providing an initial green body of ceramic; and machining the initial green body to provide a machined green ceramic body. Embedding the initial green body in an embedding mass can be avoided. The initial green body can be bisqued, infiltrated an adjuvant such as machining wax, removing the infiltrated body, and machining it. Highly detailed ceramic products can be generated. The machined green ceramic body may be fired and/or further processed to provide a more finished ceramic body. Examples include a femoral component for a posterior stabilized knee implant, a component body for an artificial rotation device containing knee implant prosthesis a dental implant or bridge, an ice skating blade, and so forth. Zirconia ceramics are advantageously employed, for an example, Mg-TTZ.

Prosthetic implant or component therefor of a magnesium oxide stabilized transformation toughened zirconia (Mg-TTZ) ceramic can be made by providing a bisqued initial green body by compressing powder through a cold isostatic press and heating to a bisque stage. Then, without embedding it in an embedding mass, the bisque is machined to have a shape of the same proportions as the shape of, but larger than, the ceramic portion of a fired prosthetic implant or component product. Firing can provide the fired Mg-TTZ ceramic body product.

Hard substance wear couple has materials of differing hardness forming surfaces for articulation in a joint implant prosthesis. For instance, a first articulating body can have a convex articulating surface, and a second articulating body can have a corresponding concave articulating surface that can articulate with the convex articulating surface of the first articulating body, in which the convex articulating surface of the first articulating body is harder than the corresponding concave articulating surface of the second articulating body. Ceramic materials are preferred.

Harder-softer hard substance articulation for arthroplasty

Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and/or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.

Modular toe joint implant is a multi-piece device. Various sized piece(s), for example, head(s) and stem(s), can be provided in a kit or separately.

Growing community of inventors

St. Clair, MI, United States of America

Gerald J Jerry