| 摘要 |
A suture anchor made of a single length of resilient wire bent to form a suture retaining loop disposed proximally between two diverging legs with pointed ends sharing an independent plane. The anchor is to be inserted suture retaining loop first into a bone tunnel having a diameter equal to the diameter of the suture retaining loop but smaller than the transverse spacing of the distal points of the static uncompressed legs. The two diverging coplanar legs extend radially till the distal points are set wider than the diameter of the bone tunnel so that when the anchor is inserted into the bone tunnel the static uncompressed legs compress together to penetrate into the bone tunnel. Once the anchor is set deep enough into the hole so that the distal points of each leg are below the surface of the bone cortex the sharp distal points of each leg expand out under pressure and penetrate the tunnel wall prohibiting removal of the anchor and penetrate the tunnel wall in response to applied withdrawal forces. Spring loading of the resilient wire allows for lateral expansion of the two diverging legs inside of the soft bone tunnel and the tension or pulling on the suture sets the distal tip of each leg into the inner surface of the bone cortex.
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