A balloon catheter having concentric, elongate lumen and guide tubes defining a lumen therebetween. An annular balloon has its proximal end secured to the lumen tube and its distal end secured to the guide tube. Relative axial movement of the tubes adjusts the balloon between retracted and extended positions....http://www.google.fr/patents/US6039721?utm_source=gb-gplus-shareBrevet US6039721 - Method and catheter system for delivering medication with an everting balloon catheter
Method and catheter system for delivering medication with an everting ...
