Surgery – Truss – Pad
Patent
1979-05-29
1981-08-18
Michell, Robert W.
Surgery
Truss
Pad
128310, 128317, 128 92CA, 128 92E, 128 92EB, A61F 1732, A61B 1716, A61B 1714, A61F 504
Patent
active
042840805
ABSTRACT:
Apparatus for the working of a bone, especially the femur head of a human hip joint, wherein the a is to be provided with a shell-shaped endoprosthesis, is disclosed. The apparatus includes a drivable drive shaft having a free end and a pot-shaped cutting head being arranged on the free end of the drive shaft. The cutting head is open outwardly and has a guiding bore forming part of the cutting head and is centrally located thereon. The guiding bore extends in an axial direction of the drive shaft. The cutting head has an inner end face and a jacket portion on which cutting elements are arranged. Finally included is a guiding pin for cooperating with the guiding bore. The guiding pin is arranged centrally in the bone section to be treated and protrudes from the bone surface. Additional central cutting means arranged on the cutting head are disclosed.
REFERENCES:
patent: 847133 (1907-03-01), Velasco
patent: 3667456 (1972-06-01), Charnley
patent: 4004581 (1977-01-01), Heimke et al.
patent: 4059115 (1977-11-01), Jumashev et al.
patent: 4069824 (1978-01-01), Weinstock
patent: 4116200 (1978-09-01), Braun et al.
Michell Robert W.
Orthoplant Orthopadische Implantate GmbH & Co. KG
Shedd C. W.
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