Abstract:
An insert for establishing a desired spacing between a pair of succeeding vertebrae and having a body including an extending end for supporting a location associated with a first selected lumbar vertebrae. An opposite extending end supports a spaced apart and opposing location associated with a second successively positioned lumbar vertebrae. Upon pre-positioning the body in an open space established between the vertebrae, an actuating input causes the first extending end to displace outwardly relative to the second end and into contacting support with the vertebrae.
Abstract:
A medical implant (1) for application in an articulating surface of a joint, comprising a plate- shaped structure having a first surface (5) and a second surface (7) facing mutually opposite directions, the first surface (5) comprising a first biocompatible metal, metal alloy or ceramic and being devised to form a wear resistant articulate surface configured to face the articulating part of the joint; and the second surface (7) comprising a bioactive ceramic or bioactive glass incorporated into a second metal, metal alloy or ceramic and being devised to form a bone contacting surface configured to face bone structure in the joint; wherein: the first surface (5) and the second surface (7) are adhered by means of a sintered material structure. Possibly the second surface is a sintered mixture having a homogenous microstructure comprising the bioactive ceramic or bioactive glass and the second metal, metal alloy or ceramic.
Abstract:
The invention relates to an artificial spinal implant comprising a thermoplastic elastomer comprising a hard phase and soft phase, wherein the hard phase comprises a polymer chosen from the group consisting of polyester, polyamide, polystyrene, polyacrylate and polyolefin and the soft phase comprises a polymer chosen from the group consisting of polyether, polyester, polyacrylate, polyolefin and polysiloxane.
Abstract:
This description deals with a medical device, specifically a prosthetic intervertebral disc having a compressible core that is mechanically interactive with the prosthetic disc's end plates thereby providing excellent torque or twisting transmission between the end plates.
Abstract:
An intervertebral disc prosthesis comprises a superior endplate and an inferior endplate. The superior and inferior endplates include vertebra fixation surfaces designed to engage vertebral bodies. A composite material is provided on the vertebra fixation surfaces. The composite material includes an osteoconductive component and an osteoinductive component. The osteoconductive component provides a porous matrix or base that facilitates bone growth. The osteoinductive component provides a stimulant material that encourages growth of the bone cells between the osteoconductive component of the endplate and the vertebral body facing the endplate. In one embodiment, the osteoconductive component is permeated by an osteoinductive material to provide the composite material. In another embodiment, the composite material includes a non- resorbable portion that includes osteoconductive substances and a resorbable portion that is doped with osteoinductive substances.
Abstract:
Um ein Implantat zum Einsetzen in einen menschlichen oder tierischen Körper, welches mindestens ein Implantatteil umfasst, wobei das mindestens eine Implantatteil einen aus einem Implantatmaterial hergestellten Grundkörper mit einer Oberfläche aufweist, die mindestens teilweise in Form einer künstlichen Gelenkfläche ausgebildet ist, wobei ein Teil der oder die ganze Gelenkfläche mit einer verschleißmindernden Hartstoffbeschichtung bedeckt ist, so zu verbessern, dass eine Implantattragedauer verlängert und die Verträglichkeit des Implantats erhöht wird, wird vorgeschlagen, dass zwischen der Hartstoffbeschichtung und der mindestens einen aus dem Implantatmaterial gebildeten Gelenkfläche eine Zwischenschicht zum vermindern von Spannungen zwischen der Hartstoffbeschichtung und dem Implantatmaterial vorgesehen ist. Ferner wird ein verbessertes Verfahren zum Herstellen eines Implantats zum Einsetzen in einen menschlichen oder tierischen Körper vorgeschlagen.
Abstract:
The present invention provides a long-bone endoprosthesis having an essentially spherical head characterized by the presence of a plurality of crater-like depressions distributed over its outer surface, and further characterized in that substantially the entire outer surface has an average micro-roughness in the range of 1 to 1000 micrometers.
Abstract:
A spacer implant (10, 110, 120) designed for placement between the bones of a joint, which includes soft tissue components. The spacer includes a spacer body (12) positionable between the bones and defined by an outer periphery (18). The spacer also includes at least one tether (40). Each of the tethers has a first end (42) fixed to the spacer body and a second end (44) extending outwardly from the outer periphery of the spacer body. The second end of each of the tethers is adapted to be fastened to any of the bones or the soft tissue components of the joint.
Abstract:
A total joint arthroplasty (34) is described having a first bearing member (36) (e.g., the femoral head of the femoral component of a total arthroplasty hip joint) and a second bearing member (38) (e.g., an acetabular component) cooperable with the first bearing member (36)with the articulating surfaces of the bearing members (36, 38) in engagement with one another, and wherein at least one of the bearing members (36, 38) has a substrate (50) of a magnesia-stabilized zirconia ceramic material and a bearing surface having a carbon coating (52) applied to the bearing surface.
Abstract:
A method and apparatus for repairing a damaged intervertebral disc nucleus in a minimally invasive manner utilizes a modular disc prosthesis. The modular disc prosthesis preferably comprises at least three modular segments. In one embodiment, each modular segment includes an inner core and an outer shell. The modular segments are selectively interlockable in situ with each other. The modular segments form an implanted unitary device that closely mimics the geometry of the disc nucleus cavity.