Expanding surgical anchor and method of tissue repair

A surgical anchor system comprising:

• an implant comprising:
• a proximal end section configured to releasably engage an end of an inserter, the proximal end section being configured to capture at least one activation strand;
• a distal end section that is configured to engage at least one repair strand;
• and
• an expander section between the proximal end section and the distal end section, the expander section having a substantially frusto-conical shape that tapers outwardly toward the distal end section and that defines an outer most diameter of the implant;
• and
• an expanding cannulated fixation device configured to be loaded on the inserter and to engage the implant, the expanding cannulated fixation device defining at least one longitudinal slot that splits at least a portion of the expanding cannulated fixation device into expandable portions that are configured to expand outwardly, the expandable portions comprising teeth on an inner surface thereof, wherein;
• the implant and the expanding cannulated fixation device are configured such that, when i) the implant and the expanding cannulated fixation device are within a hole in a bone with the at least one repair strand engaged with the distal end section and with the at least one activation strand captured by the proximal end section, and ii) force is applied to the at least one activation strand to move the implant proximally relative to the expanding cannulated fixation device, the distal end section holds the at least one repair strand within the hole and the expandable portions expand within the hole to fix the at least one repair strand between the expandable portions and the bone, and
• the teeth of the expandable portions are configured to engage with the implant when the implant engages with the expanding cannulated fixation device to expand the expandable portions.