A transvascular system for delivering a drug to a tissue region from a blood vessel includes a catheter having a distal portion with puncturing, orientation, drug delivery, and imaging elements. The puncturing element is deployable for penetrating the vessel wall to access the tissue region. The orientation...http://www.google.com/patents/US8083708?utm_source=gb-gplus-sharePatent US8083708 - Systems and methods for delivering drugs to selected locations within the body
