Merete Medical Gmbh

Aristotech Industries Gmbh

Guenter Lob

Emmanuel Anapliotis

Curt Kranz

Martin Hilse

An intermediate body is for a bone implant for replacement of an osseous area. The intermediate body has a base body and a seat which extends axially in the base body and is surrounded by a wall of the base body. The intermediate body is designed to receive and surround an end portion of an intramedullary implant part. A clamp device is assigned to the seat. A clamp component is arranged on the wall of the base body surrounding the seat. In order to clamp, the end portion is inserted beforehand into the seat relative to the wall of the base body. The wall then surrounds the seat and the inserted end portion is movable towards the seat and in the process clamps the end portion in the seat. An implant arrangement is provided with the intermediate body.

Intermediate body for a bone implant, and implant arrangement

A knee arthrodesis implant has a femur nail and a tibia nail. A connecting module has two longitudinally separated half shells that when connected form a passage. One end of the connecting module is coupled to a femur nail neck and the other end is coupled to a tibia nail neck. The half shells have a plurality of corresponding recesses extending perpendicularly to the passage. Each recess receives a tensioning screw, and tightening the tensioning screws couples the femur and tibia nail necks to the connecting module by holding the femur and tibia nail necks within the passage by frictional contact. Each of the two half shells is angled along its length, an angle of one of the half shells corresponding to an angle of the other of the half shells, allowing the tibia nail and femur nail to extend from the passage at an angle from one another.

Knee arthrodesis implant

A modular joint prosthesis includes a nail for insertion into a bone marrow canal, the nail having a nail neck. A neck piece has a proximal end, a middle shaft portion defining a longitudinal axis, and a distal end with a conical pin to which a slip-on joint ball can be attached. The proximal end of the neck piece has a helmet-shaped receiving head that includes an insertion opening for insertion of the nail neck or a module connector, a slot extending in the direction of the longitudinal axis, and corresponding recesses positioned on either side of the slot and extending perpendicularly to the longitudinal axis. The corresponding recesses receive a tensioning means which, in a tensioned state, clampingly fixes the nail neck or the module connector in the receiving head by frictional engagement in a jaw-like manner by application of tightening torque sufficient to prevent axial displacement and rotation.

Modular joint prosthesis

A knee arthrodesis implant has a femur nail inserted in the bone marrow canal of the femur, and a tibia nail inserted in the bone marrow canal of the tibia, the nails being rigidly connected to each other by a connecting means. The problem of providing a knee arthrodesis implant having increased modularity as the result of increased length variability, having a reduced number of parts, and allowing simplified modification is addressed. The problem is addressed in that the connecting means has at least one collar-like module lying in the axis direction defined by the nail, the module having at least two half-shells which are connected to each other in a detachable manner and which are separated in the axis direction (LA) of the module, said half-shells together forming a passage which extends axially and through which a nail neck is inserted, and which have recesses corresponding to each other for receiving a tensioning means, said recesses being arranged coaxially in the longitudinal direction of the module and positioned perpendicular to the axis (LA). The tensioning means fixes the respective nail neck in the passage when in the tensioned state in the manner of a clamping jaw, exclusively by means of a friction fit producing a sufficient clamping torque to prevent axial displacement and rotation.

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Munich, Germany

Guenter Lob