초록 ▼

A ceramic socket or ceramic socket insert for a hip joint prosthesis is tested prior to implantation in a human body by subjecting the portions of the interior of the socket or socket insert to a load that generates stresses that are greater than the physiological load. This may be accomplished eith

A ceramic socket or ceramic socket insert for a hip joint prosthesis is tested prior to implantation in a human body by subjecting the portions of the interior of the socket or socket insert to a load that generates stresses that are greater than the physiological load. This may be accomplished either by pressing a hemispherically-shaped deformable material such as polymer or plastic into the interior of the socket or socket insert or by exposing the interior of the socket or socket insert to a fluid under pressure. The interior of the socket or socket insert may be sealed off with a test punch that has a supply line for the fluid. To reduce the amount of fluid that is required, the test punch may have a bulge that projects into the interior of the socket or socket insert and leaves only a gap for the fluid. In the method of testing, the interior of the socket or socket insert is subjected to a load that generates stress such that a defective socket or socket insert is destroyed and a non-defective socket or socket insert survives unharmed.

대표청구항 ▼

[ What is claimed is:] [1.] A method for testing a ceramic socket or a ceramic socket insert for a hip joint endoprostheses, the ceramic socket or ceramic socket insert having an interior and being of a type wherein upon implantation in a human body, the ceramic socket or ceramic socket insert is an

[ What is claimed is:] [1.] A method for testing a ceramic socket or a ceramic socket insert for a hip joint endoprostheses, the ceramic socket or ceramic socket insert having an interior and being of a type wherein upon implantation in a human body, the ceramic socket or ceramic socket insert is anchored to a pelvic bone, either directly or by an outer shell and wherein a ceramic ball head is inserted into the ceramic socket or ceramic socket insert, the ceramic ball being mounted onto a metal shaft that is anchored in a thigh bone with a pin and wherein during usage of a ceramic socket or ceramic socket insert after implantation of the ceramic socket or ceramic socket insert in a human body, portions of the ceramic socket or ceramic socket insert that define an interior of the ceramic socket or ceramic socket insert are placed under a physiological load, the method of testing being carried out prior to implantation of the ceramic socket or ceramic socket insert in a human body, wherein the method of testing comprises the step of:subjecting the interior of the ceramic socket or ceramic socket insert to a load, wherein the load generates stresses in the interior of the ceramic socket or ceramic socket insert on all portions of the ceramic socket or ceramic socket insert that would be placed under a physiological load during usage after implantation of the ceramic socket or ceramic socket insert in a human body and wherein the magnitude of the stresses that are generated by the load are greater that the magnitude of the stresses that would be placed on the portions of the ceramic socket or ceramic socket insert under a physiological load during usage after implantation of the ceramic socket or ceramic socket insert in a human body.