Tap-in bone anchor with expanding ring
AssigneeSmith & Nephew, Inc.
InventorMarc Joseph Balboa
Life of this patent
Estimating the term…
Abstract
An anchoring device for holding suture in bone includes an implant body with a proximal end and a distal end. A distal opening of the implant body is configured to receive a first proximal portion of an anchor. An expandable ring is initially press-fit about the first proximal portion of the anchor. The anchoring device is then located in a pre-drilled bore in a bone portion and the anchor portion is drawn proximally into the implant body, causing the ring to expand and contact the inner walls of the bone bore thus providing additional locking force of the anchoring device in the bone.
Claims29
An anchoring device, comprising:
- an implant body having a central body axis, a proximal end and a distal end with a distal opening of the implant body located at the distal end of the implant body, the distal opening of the implant body having an inner diameter of a first diameter value;
- an anchor having a first proximal portion with an outer diameter not greater than the first diameter value and a second proximal portion distally positioned with respect to the first proximal portion, the second proximal portion having an outer diameter of a second diameter value greater than the first diameter value, the anchor first proximal portion positioned adjacent the implant body distal opening;
- and
- a first circumferentially expandable closed ring, disposed about the anchor first proximal portion, configured to circumferentially expand as the anchor is pulled into the implant body.
An anchoring device, comprising:
- a barbed implant body, extending longitudinally about a central body axis, having a proximal end and a distal end, and a distal opening, the distal opening of the implant body having an inner diameter of a first diameter value;
- an anchor, having a distal portion, a first proximal portion with an outer diameter not greater than the first diameter value and a second proximal portion distally positioned with respect to the first proximal portion of the anchor, the second proximal portion of the anchor having an outer diameter of a second diameter value greater than the first diameter value, the anchor first proximal portion positioned adjacent the implant body distal opening;
- and
- a first circumferentially expandable closed ring disposed about the anchor first proximal portion and configured to circumferentially expand into a press-fit arrangement with the second proximal portion of the anchor.
A suture anchoring device, comprising:
- an anchor having a first proximal portion with an outer diameter of a first diameter value and a second proximal portion distally positioned with respect to the first proximal portion, the second proximal portion having an outer diameter of a second diameter value greater than the first diameter value;
- an implant body having a central body axis, a proximal end and a distal end with a distal opening of the implant body located at the distal end of the implant body configured to receive the anchor first proximal portion, the implant body distal opening positioned adjacent the anchor first proximal portion;
- and
- a first circumferentially expandable closed ring, disposed in a press-fit arrangement about the anchor first proximal portion, configured to circumferentially expand as the anchor is pulled into the implant body.
Dependencies are inferred from the claim text.