Anchoring element for anchorage in bone tissue
AssigneeMedevelop AB
InventorPer-Ingvar Br.ang.nemark
Life of this patent
Estimating the term…
Abstract
An anchoring element for implantation into first and second aligned bores of different diameters provided in bone tissue of two bones or two portions of a bone separated by a non-ossified tissue. A prosthesis is supported on the proximal end of the anchoring element. A first cylindrical portion is located at the distal end of the anchoring element and has a first external thread and an outer diameter corresponding to a diameter of the first bore. A second cylindrical portion is located at the proximal end of the anchoring element. The second cylindrical portion includes a second external thread and has an outer diameter corresponding to a diameter of the second bore. The first and second external threads have an equal pitch.
Claims22
An anchoring element for implantation into first and second aligned bores of different diameters provided in bone tissue of two bones or two portions of a bone separated by non-ossified tissue, the anchoring element comprising:
- a distal insertion end having a first cylindrical portion including a first external thread and having an outer diameter for corresponding to a diameter of the first bore;
- a proximal supporting end having means disposed thereon for supporting a prosthesis and having a second cylindrical portion disposed on the proximal supporting end, the second cylindrical portion including a second external thread and having an outer diameter for corresponding to a diameter of the second bore;
- and
- an intermediate cylindrical portion disposed between the first and second cylindrical portions and having a length for approximately equalling a width of the non-ossified tissue between the bones and being free from threads;
- wherein the outer diameter of the first cylindrical portion is equal to or smaller than the outer diameter of the second cylindrical portion, and wherein the first and second external threads have an equal pitch.
A dental anchoring element of a biocompatible material for implantation into first and second aligned bores of different diameters provided in a zygomatic bone and in a maxilla, the anchoring element having comprising:
- a distal insertion end having a first cylindrical portion at the distal insertion end, the first cylindrical portion including a first external thread and having an outer diameter for corresponding to a diameter of the first bore in the zygomatic bone;
- a proximal supporting end having means disposed thereon for supporting a tooth prosthesis and having a second cylindrical portion at the proximal supporting end, the second cylindrical portion including a second external thread and having an outer diameter for corresponding to a diameter of the second bore in the maxilla;
- and
- an intermediate cylindrical portion disposed between the first and second cylindrical portions and having a length for approximately equalling a width of a maxillary sinus disposed between the maxilla and the zygomatic bone;
- wherein the outer diameter of the first cylindrical portion is at least equal to or smaller than the outer diameter of the second cylindrical portion, and the first and second external threads have an equal pitch.
Dependencies are inferred from the claim text.