Fixture and implant
AssigneeNantoh. Co., Ltd
InventorTeruo Ishiwata
Life of this patent
Estimating the term…
Abstract
A fixture (10) to be embedded in a bone (H), comprising: a fixture body (11) through which a central hole (13) penetrates over the entire length thereof; and a cap body (21) which closes an opening on a root end side of the central hole (13). The cap body (21) has a first shaft section (24) to be fitted into the central hole (13). The central hole (13) has a first tapered hole section (14) which decreases in diameter from the root end side toward a top end side, and the cap body (21) has a first tapered shaft section (25) to be fitted into the first tapered hole section (14).
Claims14
An implant to be embedded in a bone, comprising:
- a fixture body through which a central hole penetrates over the entire length of the fixture body, the central hole comprising a first tapered hole section which decreases in diameter from a root end side toward a top end side and a second tapered hole section which decreases in diameter from the top end side toward the root end side;
- and
- a cap body arranged on an opening on the root end side of the central hole and having a first tapered shaft section to be fitted in the first tapered hole, and
- an abutment arranged on an opening on the top end side of the central hole and having a second tapered shaft section to be fitted into the second tapered hole section;
- wherein the fixture body, the cap body and the abutment are injection-molded articles of a ceramic powder,
- wherein the fixture body, the cap body, and the abutment have different anisotropic directions of mechanical strength due to respective orientation of crystals,
- wherein the cap body has a hole formed only on a top end side thereof, and
- wherein the abutment has a hole formed only on a root end side thereof.
A method of manufacturing an implant to be embedded in a bone, comprising:
- separately injection molding a fixture body of a fixture, a cap body of the fixture, and an abutment, by injection-molding a ceramic powder so that the fixture body, the cap body and the abutment have different anisotropic directions of mechanical strength due to respective orientation of crystals,
- wherein the fixture body comprises a central hole which penetrates over the entire length of the fixture body, the central hole comprising a first tapered hole section which decreases in diameter from a root end side toward a top end side and a second tapered hole section which decreases in diameter from the top end side toward the root end side;
- wherein the cap body is configured to be arranged on an opening on the root end side of the central hole;
- wherein the abutment comprises a shaft section configured to be fitted into the central hole, and
- wherein the cap body has a hole formed only on a top end side thereof, and
- wherein the abutment has a hole formed only on a root end side thereof.
Dependencies are inferred from the claim text.