Knotless Instability Anchor
AssigneeDePuy Mitek, LLC
InventorsDouglas Hester, Brian Otrando
Life of this patent
Estimating the term…
Abstract
Methods and devices are provided for anchoring suture to bone. In one exemplary embodiment, a suture anchor is provided that includes one or more bone-engaging surfaces features and an external sidewall. The external sidewall can allow a suture coupled to the suture anchor and located between the anchor and bone to be movable relative to the suture anchor, even when the suture anchor is partially or fully disposed within a bone hole. Suture threaders and suture anchor drivers are also provided that can be used with the various methods and devices disclosed herein, or with other methods and devices known in the art.
Claims30
A suture anchor, comprising:
- an elongate body having proximal and distal ends defining a longitudinal axis therebetween;
- and
- a plurality of bone-engaging surface features formed on at least a proximal portion of an external surface of the elongate body;
- wherein the elongate body has an external sidewall extending longitudinally between the proximal and distal ends of the elongate body, the sidewall being configured to allow a suture to slide therealong when the elongate body is disposed within a bone hole with a first friction force between the suture and the sidewall being less than a second friction force between the suture and an internal surface of the bone hole.
A suture anchor, comprising:
- a cannulated elongate body having an inner lumen and having a plurality of bone-engaging surface features formed on a first portion of an external surface of the elongate body, and a sidewall extending longitudinally along a second portion of the external surface of the elongate body;
- wherein, when the suture anchor is disposed within a bone hole and the plurality of bone-engaging surface features are in engagement with an internal surface of the bone hole, the suture anchor has
- a delivery orientation in which a suture positioned to extend through the inner lumen and along the planar sidewall is slidable along the planar sidewall with a first friction force between the suture and the sidewall that is less than a second friction force between the suture and the internal surface of the bone hole, and
- a locked orientation, rotatably offset from the delivery orientation, in which the suture is positioned within the bone hole between the plurality of bone-engaging surface features and the internal surface of the bone hole.
An apparatus for anchoring tissue to bone, comprising:
- a suture anchor having proximal and distal ends, and a sidewall formed on an external surface thereof and extending between the proximal and distal ends, the sidewall being configured to allow a suture to slide therealong when the suture anchor is disposed within a bone hole with a first friction force between the suture and the sidewall being less than a second friction force between the suture and an internal surface of the bone hole;
- and
- a driver having an elongate shaft and a distal tip configured to mate with a proximal portion of the suture anchor, the distal tip being configured to align with the sidewall in a predetermined orientation, and the driver having a suture alignment guide formed thereon and axially aligned with the sidewall on the distal tip to thereby align a suture extending longitudinally along the elongate shaft with the sidewall on the suture anchor.
A method for anchoring suture to bone, comprising:
- inserting a suture anchor with a suture coupled thereto into a bone hole in bone such that a proximal end of the suture anchor is positioned substantially flush or sub-flush with a proximal opening of the bone hole, and a plurality of bone-engaging surface features on an external surface of the suture anchor engage the bone hole to prevent removal of the suture anchor from the bone hole;
- after inserting the suture anchor, applying tension to the suture such that the suture slides between a bone surface defining the bone hole and an external surface of the suture anchor free of the plurality of bone-engaging surface features;
- and
- after applying the tension, rotating the suture anchor within the bone hole such that the suture becomes engaged between the bone-engaging surface features on the suture anchor and the bone surface of the bone hole.
Dependencies are inferred from the claim text.