Cannula system and method for partial thickness rotator cuff repair

摘要

A trans-soft tissue anchor implantation system in one embodiment includes a positioning wire having a tissue penetrating distal tip, a cannula for passage through the soft tissue and a suture anchor. The cannula has an axial lumen therethrough sized to accommodate at least the positioning wire, a thin-walled distal portion and a tissue engaging feature, such as an arcuate groove, on at least a portion of an outer surface of the cannula proximal of and adjacent to the distal portion. Tissue, such as a tendon, expands into the groove allowing a surgeon to manipulate the tissue with the cannula.

主权项

1. A method for passing a suture anchor through a tendon and into a bone, the method comprising the steps of:
locating a desired anchor receiving site on the bone; passing a locating wire through the tendon and at least onto the bone at the anchor receiving site; passing over the locating wire and through the tendon a cannula which comprises a thin-walled distal portion, and an axial lumen therethrough sized to accommodate at least the positioning wire; engaging a portion of the tendon with a tissue engaging feature on at least a portion of an outer surface of the cannula proximal of and adjacent to the distal portion and then manipulating the tendon with the cannula; passing the suture anchor through the cannula and placing the suture anchor into the bone at the anchor site; and wherein the step of manipulating the tendon comprises lifting the tendon away from the bone.