Scaffold fixation device for use in articular cartilage repair
AssigneeEthicon, Inc.
InventorDavid W. Overaker
Life of this patent
Estimating the term…
Abstract
A device for attaching a tissue replacement scaffold to a bone has a platform positionable in substantially parallel relationship to the bone for retaining the tissue scaffold proximate to the bone. A post extends from the platform and is insertable into a hole formed in the bone. One or more ribs extend from a side surface of the post along a portion of its length. The ribs are mounted on opposing flexible members and establish an interference fit relative to the hole in the bone tissue. The ribs are urged radially outwardly by the flexible members and have a sharp edge that grips the sides of the hole in the bone such that the ribs restrict withdrawal of the device. Vertical ribs may also be included to prevent rotation of the device within the hole in the bone.
Claims20
A device for attaching a tissue scaffold to bone tissue, comprising:
- a platform positionable in substantially parallel relationship to the bone tissue for retaining the tissue scaffold proximate to the bone tissue;
- a post extending from the platform, said post insertable into a hole formed in the bone tissue;
- at least one rib extending from a surface of said post generally perpendicular to the axis of said post, said rib positioned intermediate said platform and a distal end of said post and establishing an interference fit relative to the hole in the bone tissue to prevent withdrawal of said device from a hole in the bone tissue into which it has been inserted.
A device for attaching a tissue scaffold to bone tissue, comprising:
- attaching means for attaching the scaffold to said device;
- retaining means coupled to said attaching means for retaining said attaching means in proximity to the bone tissue, said retaining means inserting into a hole formed in the bone tissue, said retaining means including gripping means extending from the outer periphery thereof for gripping the bone tissue proximate the hole to restrain said device from pulling away from the bone tissue.
Dependencies are inferred from the claim text.