Headed bioabsorbable tissue anchor
AssigneeArthrex, Inc.
InventorsR. Donald Grafton, Mark Brunsvold
Life of this patent
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Abstract
A headed bioabsorbable tissue anchor has a continuous thread spiraling around a tapering central core. At the distal end, the headed bioabsorbable tissue anchor terminates in a flat point. At the proximal end, the bioabsorbable tissue anchor has a flat, disk-shaped head for engaging tissue, and slots formed in the head for engaging a driver. The headed bioabsorbable tissue anchor has a large thread surface per turn of thread. As the anchor is turned into bone for engaging cancellous bone, the disk-shaped head engages and anchors the tissue to the bone.
Claims20
A headed bioabsorbable tissue anchor for attaching soft tissue to bone without using suture, the tissue anchor, comprising:
- a fully cannulated body formed of a bioabsorbable material, the body having a distal end and a proximal end;
- a continuous thread disposed in a spiral around the body and having an outer diameter;
- a disk-shaped head disposed on the proximal end of the body for engaging soft tissue and holding the soft tissue against bone without using suture, the head having an outer diameter greater than the outer diameter of the thread for compressing soft tissue to bone;
- and
- at least one coupling arrangement for engaging a driver for turning the anchor, the coupling arrangement comprising at least one slot that extends completely through the head of the anchor without extending into the body of the anchor.
A headed bioabsorbable tissue anchor and driver assembly for driving a headed bioabsorbable tissue anchor into bone and to engage soft tissue and hold the soft tissue against a surface of the bone, the assembly comprising:
- a driver having a distal end and a proximal end, the distal end having a plurality of projections;
- and
- a headed bioabsorbable tissue anchor inserted on the distal end of the driver, the head of the tissue anchor being disk-shaped for engaging soft tissue and having slots engaging the plurality of projections on the driver, the slots extending completely through the head of the anchor.
Dependencies are inferred from the claim text.