Abstract: A multilayer stent configured for implantation in a body lumen, including a tubular outer layer comprising a first plurality of struts defining an outer layer mesh pattern extending between first and second ends of the outer layer, and a tubular inner layer comprising a second plurality of struts defining an inner layer mesh pattern extending between first and second ends of the inner layer. The inner-layer is at least partially disposed within the outer layer, wherein at least a portion of the inner layer is attached to, or integrally formed with, at least a portion of the outer layer.

Abstract: A data processing method for determining a range of motion of an artificial knee joint which connects a femur and a tibia via a medial ligament and a lateral ligament, wherein at least the femur comprises an implant which forms a medial condyle and a lateral condyle, the method comprising the steps of: acquiring the maximum lengths of the lateral ligament and the medial ligament for a particular flexion angle of the knee joint; calculating a first virtual position between the femur and the tibia in which the lateral condyle of the femoral implant touches the tibia and the medial ligament is stretched to its maximum length; calculating a maximum valgus angle of the range of motion from the first virtual position; calculating a second virtual position between the femur and the tibia in which the medial condyle of the femoral implant touches the tibia and the lateral ligament is stretched to its maximum length; and calculating a maximum varus angle of the range of motion from the second virtual position.

Abstract: A deformable marker device for adapting to a human or animal body includes a plurality of marker elements, and a connecting device that connects at least some marker elements of the plurality of marker elements to each other. The connecting device enables the at least some marker elements to be moved relative to each other so as to adapt a shape of the marker device to a course of a curved surface.

Abstract: A system and method for determining the position of correspondence object pairs including A-objects and B-objects that represent the same objects of the same anatomical body structure in two different reference frames A and B, including: defining A-objects and B-objects that each represent different objects of the body structure in their respective reference frames; determining geometric relationship data A and geometric relationship data B that describe a geometric relationship between the A-objects based on positions of the A-objects in the reference frame A and the B-objects in the B reference frame; and providing data derived or extracted from the geometric relationship data A and from the geometric relationship data B to allow a comparison of a geometric relationship between at least two A-objects to a geometric relationship between at least two B-objects.

Abstract: A medical upright positioning device includes a planar structure having a foot positioning device. At least one outer edge of the planar structure comprises an abutting or engaging device arranged in a predefined positional relationship to the foot positioning device, wherein the abutting or engaging device is operative to position the planar structure in at least one predefined orientation relative to a reference direction.

Abstract: The invention relates to a calibration method for an axially determinate medical instrument, wherein: the instrument, which is situated within the localization range of a medical tracking system, is positioned such that it can be rotated about its spatially fixed or spatially determinate axis; the instrument is rotated about the axis, wherein a reference which is situated on the instrument or is arranged on and/or fastened to the instrument such that it is spatially fixed relative to the instrument comes to rest at at least two positions; the at least two positions are spatially determined with the aid of the tracking system; the axis of the instrument is spatially determined from the determined positions; and wherein the axis thus determined is assigned to the tracked instrument.

Abstract: A system and method for determining the position of correspondence object pairs including A-objects and B-objects that represent the same objects of the same anatomical body structure in two different reference frames A and B, including: defining A-objects and B-objects that each represent different objects of the body structure in their respective reference frames; determining geometric relationship data A and geometric relationship data B that describe a geometric relationship between the A-objects based on positions of the A-objects in the reference frame A and the B-objects in the B reference frame; and providing data derived or extracted from the geometric relationship data A and from the geometric relationship data B to allow a comparison of a geometric relationship between at least two A-objects to a geometric relationship between at least two B-objects.

Abstract: A medical upright positioning device includes a planar structure having a foot positioning device. At least one outer edge of the planar structure comprises an abutting or engaging device arranged in a predefined positional relationship to the foot positioning device, wherein the abutting or engaging device is operative to position the planar structure in at least one predefined orientation relative to a reference direction.

Abstract: A deformable marker device for adapting to a human or animal body includes a plurality of marker elements, and a connecting device that connects at least some marker elements of the plurality of marker elements to each other. The connecting device enables the at least some marker elements to be moved relative to each other so as to adapt a shape of the marker device to a course of a curved surface.