The present invention provides apparatus and methods for a conduit, such as an implantable conduit for a vessel. The conduit may comprise a main member and a side-branch member. The conduit may be implanted with the side-branch member initially disposed within the main member. When positioned, the side-branch...http://www.google.es/patents/US6949121?utm_source=gb-gplus-sharePatente US6949121 - Apparatus and methods for conduits and materials