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US 2020/0367879 A1Published application
Bone anchor having improved fixation strength
AssigneeSmith & Nephew, Inc.
InventorsNehal Navinbhai Patel, Mark Edwin Housman
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Abstract
Bone anchors having improved fixation are discussed. The bone anchors include an anchor body and radially protruding ribs that extend approximately parallel to a longitudinal axis of the bone anchor. A leading distal edge of each rib may be configured in a tapered “knife-edge” configuration. Such ribs may mitigate the plow-out effect, preserving contact between the ribs and the surrounding bone along the length of the anchor. Furthermore, such ribs provide increased surface area, improving fixation strength.
Claims20
A method of surgical repair comprising:
- inserting an anchor into a bone hole, the anchor comprising:
- a generally elongated body extending from a proximal end to a distal end along a longitudinal axis, a distal portion of the body tapered toward a tip;
- an eyelet formed through the body, extending transverse to the longitudinal axis, and dimensioned to receive a suture;
- a plurality of first channels formed within an outer surface of the body and extending from a region proximal to the eyelet distally along at least a portion of the body, adjacent sides of each of the plurality of first channels sharing a sharp-tipped root, the adjacent sides of each of the plurality of first channels being straight from the shared root to a vertex along an entire length of the first channels;
- a plurality of second channels formed within the outer surface of the body and extending proximally from the eyelet, a width of the second channels selected to be greater than a width of the first channels and dimensioned to receive a suture;
- and
- a plurality of circumferentially spaced ribs defined between the first channels;
- wherein a diameter of the body at any fixed point along a length of the body does not expand radially.
5 more elements
Dependencies are inferred from the claim text.