Abstract:
A set is provided for creating an offset-resurfacing hip-joint implant. The set includes a 1 to 1.5 mm thick metallic acetabulum shell (1) for insertion into the natural acetabulum, from which only cartilage has been removed, a metallic head cap (2) for placement on the natural hip-joint head, from which only cartilage has been removed, and an inlay (3) for insertion into the acetabulum shell (1) as a sliding partner for the head cap (2). The inlay has a material thickness of 2 to 5 mm. The head cap (2) has a wall thickness which increases constantly from a thickness of 2 mm to 6 mm viewed in cross section in the region of the base edge (6) of the head cap, so that an eccentricity is produced in its outer shape
Abstract:
Described here is a set for the construction of a resurfacing hip implant. It comprises a thin metal cup for cemented insertion into the natural acetabulum, a thin metal cap for cemented placement upon the natural femoral head, and an inlay which can be placed in the cup of the acetabulum as a sliding partner for the cap for the femoral head.
Abstract:
A subcutaneous, intramuscular support (1) is provided for a rigid transcutaneous implant (2), which can be anchored intracorporeally in a bone stump. The support has an intermediate piece (3) between the part of the implant (2) to be intracorporeally anchored and an extracorporeal coupling device (4) that can be coupled to it. A rigid bushing (5) is firmly connected with the intermediate piece (3), such that an annulus (6) is formed between the wall of the bushing (5) and the intermediate piece (3), the annulus being closed in the intracorporeal direction, and into which annulus the extracorporeal coupling device can be inserted. A tube (7) made of a flexible material is applied to the outer wall of the bushing (5), and a metallic wool (8) is applied to the flexible tube (7).
Abstract:
A pelvis part endoprosthesis for the replacement of a pelvis part in the region of the hip joint includes a main body (100) that has a hemispherical recess (101) for seating of an artificial hip joint socket, as well as a projecting neck (102) in which at least one locating hole (103, 104) is formed. The longitudinal axis of this hole forms with the polar axis (105) of the recess (101) an angle which lies in the range between 20.degree. and 30.degree.. The endoprosthesis further includes a first connecting element (200), by means of which a connection of the main body (100) with the ilium region (400) of the remaining pelvis is realized. The connection is produced by means of a self-locking seating of a peg (201) of the first connecting element (200) in at least one locating hole (103, 104). The peg (201), when viewed from the dorsal towards the ventral direction, is inclined at an angle in the range between 25.degree. and 45.degree., and is laterally inclined from the medial at an angle between 0.degree. and 10.degree.. The endoprosthesis has the possibility of being individually created from a set, with the individual elements being exchangeable even during an operation, and the installed position being adjustable even during the implantation.
Abstract:
The breast prosthesis consists of an elastically deformable envelope filled at least partly with an inert flowable mass. The shape of said envelope imitates that of the breast and its sidewall, facing the thorax, has a concave form. The prosthesis is provided with at least one transverse through-duct open at its ends, in which is located a non-return valve allowing air to flow only from the inside outwards.
Abstract:
The connection of the facing ends of a tubular bone cut by an operation consists of a cylindrical metal pin with an open-cell metallic outer layer on a cylindrical metal core and with annular grooves for receiving stop surfaces which come to bear against the bone ends. The stop surfaces are suitably formed as flat interrupted rings of circumference slightly greater than half the circumference of the annular grooves and arranged to project outwardly of the grooves. A longitudinal groove intersects the annular grooves and receives a longitudinal flange projecting outwardly of the longitudinal groove and connected to the stop surfaces.The connection may be used as an endoprosthesis in which case only one stop surface is employed.
Abstract:
A set for producing an offset resurfacing condyle cap implant for an artificial hip joint is described.The set has a thin-walled metallic cap (1), to be placed onto the hip joint head that has been milled into shape only in polar area (P) and otherwise has been only decartilaged or freshened, with the walls of the metallic cap being steadily enlarged in the cross-sectional view from of 2 mm to 6 mm in thickness in the area of base edge (2), such that an eccentricity results in its external shape and its interior space (I) has first an essentially cylindrical equatorial area (Z) followed in aforementioned polar area (P) by a truncated cone-shaped, conically narrowing area, with several bore holes (4) in its walls, the axes of which run parallel to main axis (H) of cap (1), and at least one peg (5) for centering and load-bearing insertion into bore holes (4) in cap (1).
Abstract:
Joint endoprostheses are provides which respectively have a joint part with a metallic core, wherein the metallic core is coated, in regions that roll and/or slide on another joint part during execution of the joint function, with a glass-ceramic composite mixture. In one embodiment, the glass-ceramic has the following composition with approximate amounts in wt. %: ComponentAmount (wt %) SiO245-50% Al2O315-20% ZrO2 8-12% K2O0-8% Na2O 0-7.5% CaO 0-2.5% TiO2 0-1.5% and furthermore a residual amount of up to about 12.5% of MnO2 and/or Fe2O3 and/or Co2O3.
Abstract:
Pairs of partner elements for artificial joint implants have two-dimensional surface contact in which one joint part (1) rotates, rolls, slides or combines these in one movement relative to another joint part (2). A gap (10) is formed between the sliding partner elements for a film consisting of natural synovia fluid. The surface of at least one of the sliding partner elements has regularly positioned recesses (3) which serve as a reservoir for the synovia.
Abstract:
A shunt valve is provided for insertion into a surgically produced connecting canal between the trachea and the esophagus. The valve has a tube-like section (1) with an open lumen (11) to be turned towards the trachea and a closable lumen end (14) which is to be turned towards the esophagus and which can be closed by a flap valve (2) functioning on one side. The flap (3) of the valve is spring loaded in such a way that the flap valve (2) remains in closed position during insufficient counterforce and allows a flow of air from the trachea to the esophagus during inhalation and opening of the flap (3). The tubular section (1) is provided with a physiologically compatible plastic sleeve (4). The pivoting area (7) of the flap (3) of the flap valve (2) is substantially completely covered by a roof-like protuberance (10) of the plastic sleeve. An elastic force acting upon the flap (3) is produced by a restoring spring (8) formed in the roof-like covering area of the plastic sleeve (4) and coming into direct contact with the flap (3) at one of its ends (9), thereby forcing the flap into the closed position.