Artificial joint
AssigneeNexMed International Co., Ltd.
InventorMasahiro Kimura
Life of this patent
Estimating the term…
Abstract
The artificial joint of the present invention is provided with a cup having a first housing part that opens on one first-direction side, an insert that is housed in the first housing part and has a second housing part that opens on one first-direction side, a movable member having a spherical head part rotatably housed in the second housing part and a neck part extending from the head part, and a connecting part that connects the insert to the cup pivotably around a pivotal axis extending in a second direction; the neck part contacting an edge part of the insert by pivoting around the pivotal axis; the insert pivoting around the pivotal axis; and part of the opposite side of the side pushed in by the neck part across the pivotal axis protruding from the cup to one first-direction side.
Claims18
-7. (canceled)
An artificial joint, comprising:
- a cup having a first housing portion opening to one side in a first direction;
- an insert having a second housing portion opening to one side in the first direction and being housed in the first housing portion;
- a movable member having a spherical bone head portion rotatably housed in the second housing portion and a neck portion extending from the bone head portion;
- and
- a coupling portion coupling the insert to the cup so as to be pivotable about a pivotal axis extending in a second direction orthogonal to the first direction and regulates movement to one side in the first direction of the insert relative to the cup, wherein
- the neck portion pivots about the pivotal axis and comes into contact with a periphery portion of the insert, thereby pushing a part of the insert into the first housing portion, and
- the insert pivots about the pivotal axis by the part of the insert being pushed by the neck portion and a portion on a side opposite across the pivotal axis to a side pushed by the neck portion protrudes more to one side in the first direction than the cup.
Dependencies are inferred from the claim text.