Abstract: The disclosure relates to a method for manufacturing an optical element, where a blank of glass is heated and/or provided and, after heating and/or after being provided between a first mold (UF) and at least one second mold (OF), is press molded, for example on both sides, to form the optical element and is then sprayed with a surface treatment agent.

Abstract: An orthopedic implant for the partial replacement of joint surfaces. In one exemplary embodiment, the orthopedic implant includes an articular portion having a concave articular surface and a base body. The orthopedic implant may be sized to replace a small portion of the patient's natural acetabulum. In this manner, the orthopedic implant allows for the repair and/or replacement of a small portion of the articular cartilage of the acetabulum. In one exemplary embodiment, a plurality of different sized orthopedic implants may be connected together to replace a larger portion articular cartilage.

Abstract: The invention relates to an artificial intervertebral disc for implantation between two vertebral bodies (W) comprising two end plates (1, 2) and an elastically deformable disc (3) pre-stressed between the end plates (1, 2) in the axial direction, with the disc (3) lying within a tubular, elastically deformable, fibre ring (4) and the end plates (1, 2) being in tensile communication with the fibre ring (4). The disc (3) has a contact surface (5, 6) which enlarges with a compression of the artificial intervertebral disc and which adjoins one of the end plates (1, 2) so that the elastic properties of the artificial intervertebral disc show a non-linear behaviour with increasing deformation at least with respect to a compression force (F).

Abstract: The invention relates to a femoral neck prosthesis having a spherically shaped head (1), by which a centre (2) of a sphere is defined, and having a stem (3) which extends from the level of the centre (2) of the sphere along a centre line (4) over a length (L) up to a distal end (5). Since the stem has a modulus of elasticity E of between 10 GPa and 60 GPa, since the length L lies between 50 mm and 150 mm and since the equivalent stiffness S=E L formed from the product of the modulus of elasticity E and the length L lies between 0.5·109 and 9·109 [Newton/metres], the stem behaves similarly to the bone material itself and the shear strains between the stem and the bone material are kept low.

Abstract: The invention relates to an artificial intervertebral disc for implantation between two vertebral bodies (W) comprising two end plates (1, 2) and an elastically deformable disc (3) pre-stressed between the end plates (1, 2) in the axial direction, with the disc (3) lying within a tubular, elastically deformable, fibre ring (4) and the end plates (1, 2) being in tensile communication with the fibre ring (4). The disc (3) has a contact surface (5, 6) which enlarges with a compression of the artificial intervertebral disc and which adjoins one of the end plates (1, 2) so that the elastic properties of the artificial intervertebral disc show a non-linear behaviour with increasing deformation at least with respect to a compression force (F).

Abstract: With the invention a pivotal securing system between a bone screw (1) with a spherical head part (2) and a reception part (3) is shown. The reception part has a passage bore (4) with a shoulder at its end which encloses the head part (2) at its lower side and which forms an abutment when the head part (2) is pressed on by the clamping screw (7) in a settable pivotal position (8). The head part (2) is executed as a separate part (9) which can be screwed together with the bone screw (1) in order to be able to place on the reception part (3) and to connect it to the latter after the implantation of the bone screw (1).