A fastener, driving device, and method are provided for repairing a tear in soft tissue of a patient, a particular exemplary embodiment comprising a meniscal tear in a knee. The fastener has a variable-pitch helical protrusion along a central portion that decreases from the distal end to the proximal...http://www.google.co.uk/patents/US5569252?utm_source=gb-gplus-sharePatent US5569252 - Device for repairing a meniscal tear in a knee and method
