초록 ▼

An endoprosthesis insertable in a bone cavity comprises an anchoring shaft having circular steps at least in supporting regions (X,Y) of the anchoring shaft in which a support of said anchoring shaft in the bone takes place. The shaft has at a free end remote from a mouth of the bone opening a strai

An endoprosthesis insertable in a bone cavity comprises an anchoring shaft having circular steps at least in supporting regions (X,Y) of the anchoring shaft in which a support of said anchoring shaft in the bone takes place. The shaft has at a free end remote from a mouth of the bone opening a straight portion. The steps are formed in at least the straight portion one after another without undercuts. The shaft conically widens from said end towards an end opposite to said free end. The steps have contours which are at least in the region in which the steps are supported in the bone, individually adjusted to respective cross-sections of the bone hollow, which cross-sections exist at the positions of the individual steps when the endoprosthesis is inserted into the bone.

대표청구항 ▼

An endoprothesis comprising an elongated shaft dimensioned to be anchored through a bone opening in a bone cavity, said shaft being formed in one piece having a shape composed by a plurality of individual disc-like segments of different shapes forming a tapered stepped profile without undercuts from

An endoprothesis comprising an elongated shaft dimensioned to be anchored through a bone opening in a bone cavity, said shaft being formed in one piece having a shape composed by a plurality of individual disc-like segments of different shapes forming a tapered stepped profile without undercuts from a proximal end to a distal end of said shaft; said shapes of said individual disc-like segments having outer perimeters adjusted to substantially match the corresponding cross sections of the bone cavity in order said implanted shaft to be fitted snugly to the bone cavity at least in regions of said shaft in which a support of said implanted shaft to the bone takes place when said endoprothesis is loaded.