Method and Device For Improving the Fixing of a Prosthesis
OwnerLars Bruce, Bengt Mjoberg +1inventors
InventorsLars Bruce, Bengt Mjoberg, Lars Magnus Bjursten
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Abstract
In a method and a device for improving the fixing of an elongate prosthesis in a bone cavity, said fixing being provided by a bed in which the prosthesis has been driven down by vibration, a ring of a flexible, essentially plastic material is arranged around the proximal part of the prosthesis so that the ring fills the space between the bone wall and the prosthesis, whereupon the ring is compacted and compressed, after which strokes are made on the prosthesis in its longitudinal direction for final fixing thereof in the bed. The ring significantly improves the strength of the prosthesis in the bed.
Claims12
A device for improving the fixing of an elongate prosthesis in a body cavity, said fixing being performed by a bed of biocompatible granular material, in which bed the prosthesis has been driven down by vibration and in which bed the prosthesis has been finally fixed by striking on the prosthesis in its longitudinal direction, the prosthesis having a part positioned in the body cavity and projecting from the bed of grains, characterised in that it comprises a substantially continuous ring of a flexible, plastic or non-essentially elastic material, which is compacted and compressed and fills out the distance between said prosthesis part projecting from the bed and the opposite wall of the body cavity.
A method for improving the fixing of an elongate prosthesis in a body cavity, said fixing being performed by a bed of biocompatible granular material, in which bed the prosthesis has been driven down by vibration and in which bed the prosthesis has been finally fixed by striking on the prosthesis in its longitudinal direction, characterised by arranging, after said driving down by vibration but before said final fixing by striking, a flexible, plastic or non-essentially elastic material in a ring space, essentially free of grains, around the proximal part of the prosthesis, so that the ring encloses this part and fills the ring space, compacting and compressing the ring in the ring space during or after said arranging, and subsequently performing the final fixing by strokes.
Dependencies are inferred from the claim text.