The present invention is directed to methods and apparatus for cutting filaments percutaneously. The methods and systems may be used in conjunction with sealing a puncture percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament...http://www.google.co.uk/patents/US8109945?utm_source=gb-gplus-sharePatent US8109945 - Percutaneous suture path tracking device with cutting blade
