A drug delivery apparatus and method for delivering a drug locally to internal body tissue. The invention contemplates positioning a drug delivery device in a body passageway or within body tissue and then selectively wetting a membrane within the device, making the membrane permeable and allowing transport...http://www.google.fr/patents/US5458568?utm_source=gb-gplus-shareBrevet US5458568 - Porous balloon for selective dilatation and drug delivery
Porous balloon for selective dilatation and drug delivery
