Described here are methods for forming one or more tracts in tissue. The tracts may be formed in any suitable or desirable tissue, and may seal relatively quickly without the need for a supplemental closure device. In some variations, the methods comprise advancing a tissue-locating member adjacent to...http://www.google.fr/patents/US20090105744?utm_source=gb-gplus-shareBrevet US20090105744 - METHODS FOR FORMING TRACTS IN TISSUE
