Smith & Nephew Orthopaedics Ag

Degussa Aktiengesellschaft

Mathys Medizinaltechnik Ag

Walter Moser

Dirk Wunderle

Alex Seidl

Holger Broers

Anton Cotting

Thomas Kilchenmann

Peter Ritschl

Lukas Zumsteg

Georg Hubertus Nentwig

A blade-like stem of a hip joint prosthesis for anchoring in the femur, including a prosthesis neck portion and a femur-anchoring portion extending therefrom and having a proximal end and a distal end, the femur-anchoring portion including a proximal arcuate portion extending from a location adjacent the proximal end and having a radius of curvature that changes in a distal-to-proximal direction, and the femur-anchoring portion further including a distal tapered portion extending from the proximal arcuate portion toward the distal end.

Blade-like shaft of a hip joint prosthesis

A blade-like stem of a hip joint prosthesis for anchoring in the femur, including a portion comprising a prosthesis neck on the one hand and a femur-anchoring portion tapering towards a distal end on the other hand, the lateral narrow side of which comprises a distal straight portion and a proximal arcuate portion, the straight portion extending over a length of from 60% to 75% of the total length of the stem.

Blade-like stem of a hip-joint prosthesis

An appliance () for tensioning ligaments, especially articular ligaments, of a human or animal body, having at least one handle (), the or each handle () being in operative engagement with, in each case, a tensioning element () associated therewith, and with the or each handle () in each case a force indicator (), which indicates a force exerted on a or each tensioning element () associated with the or each handle () on tensioning of one or more ligaments, and a displacement indicator (), which indicates the excursion of the tensioning element () in question from a reference position, and with the or each force indicator () and/or with the or each displacement indicator () there is/are associated at least one marker (A-H), which is arranged to be detected without contact by a measurement value ascertainment system () associated with the appliance (), and also a device (), comprising the appliance (), for ascertaining force-displacement characteristic curves of ligaments, and also a method of ascertaining them.

Device and method for ascertaining the force-displacement characteristic curve of one or more ligaments

A tool for placing or removing joint sockets of an artificial joint, especially a hip joint, and a tool for placing or removing an artificial joint, has a handle, a joint socket or joint receiver or holder, and a connecting element arranged between the handle and the joint socket or joint holder. The connecting element comprises an arcuate portion in its longitudinal direction. A system for placing and removing joint sockets or joints using such a tool includes a position-determining and navigation device.

Device for placing or removing joints or joint sockets

A femur component of a hip joint endoprosthesis which has a shaft (,) for anchoring in the medullary cavity of the femur. The shaft (,) has a distal section (,) and a proximal section (,), to which is connected a collar section (,) with a peg (,) for receiving an articular head, or with an articular head which is firmly attached to the collar section (,). The shaft (,) has a front surface (,), a rear surface (,), a lateral side (,), a mesial side (,) and a plane of symmetry (,), whereby longitudinal ribs (,) which stretch from proximal to distal are fitted on the front surface (,) and the rear surface (,) in the proximal section (,) of the shaft (,). The crests (,) of the longitudinal ribs (,) form an angle &dgr;/2 of at least 1&deg; to the plane of symmetry (,), and the envelope of the crests (,) of the longitudinal ribs (,) forms a double wedge-like or ellipsoid body, which tapers both toward the lateral side (,) and the mesial side (,).

Femur component of a hip joint endoprosthesis

Mechanical joining of a two-phase tooth implant, consisting of two components which are joined by means of a conical pin projecting into a conical sleeve, the cone pairing being realized within the self-locking region and the cone pin being penetrated by a centrally aligned, tension screw reduced diameter which tensions the pair of cones against each other. The design permits the two implant components in a two-phase tooth implant to be steplessly positioned in the circumferential direction and to be joined in an anti-rotation, gap-free joint. The required degree of miniaturization, with a sufficient component strength, is achieved through the use of a cone combination in the self-locking region and through the use of a tension screw in the region of the cone joint. By these means, the mechanical, aesthetic and hygienic requirements for a two-phase tooth implant are better fulfilled than in the case of the known designs.

Growing community of inventors

Kaufdorf, Switzerland

Walter Moser