This invention overcomes the disadvantages of the prior art by providing a positionable, direct-injection catheters that can access a specific region of the heart or other organ. The catheter is provided with one or two needle shafts, which may be located within respective sheaths that extend axially...http://www.google.com/patents/US7691086?utm_source=gb-gplus-sharePatent US7691086 - Catheter for introduction of medications to the tissues of a heart or other organ
