Prosthesis system
AssigneeWaldemar Link GmbH & Co. KG
InventorArnold Keller
Life of this patent
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Abstract
A prosthesis system consisting of an endoprosthesis with a shank which is to be introduced into the medullary canal of a bone, and of a rasp (20) which is similar in shape to the shank and is used to prepare a cavity for receiving the shank. Along much of its length, the rasp has an untoothed profile part (25) which, instead of excavating the spongy bone substance, compacts the latter and thus ensures a secure fit of the prosthesis. In the area corresponding to the untoothed area of the rasp (20), the prosthesis shank preferably has a rib which cuts like a wedge into the compacted spongy substance.
Claims11
A prosthesis system consisting of an endoprosthesis (10) with a shank (11) which is to be introduced into the medullary canal of a bone, and of a rasp (20) which is similar in shape to the shank (11) and is used to prepare a cavity for receiving the shank (11), said rasp (20) having, along much of its length, an untoothed profile part (25), characterized in that the shank (11) has at least one longitudinal rib (16) in that part which corresponds to the untoothed profile part (25) of the rasp (20), and, in the untoothed profile part (25) of the rasp (20), there is no rib corresponding to the rib (16), at least over much of the rasp length.
Dependencies are inferred from the claim text.