Cementless endoprosthesis
CA 1280852 C · Owner: Gombert, Guido · Inventors: Kallabis, Manfred; Gombert, Guido
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An endoprosthesis is composed of a stem tapering to the distal end thereof and a screw spindle having a broadflanged helical flank . The stem is provided with a helical slot guiding flank of spindle during assembling of the prosthesis. The flank projects outwards from both broad side faces of the stem and forms a plurality of broad flanged thin supporting ribs in the proximal portion of the prosthesis , the ribs cutting not only into the cancellous bone structure but also into the cortex. The prosthesis provides for a load transmission exclusively into the proximal femur portion while the, distal portion is free of axial loads.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.