A balloon dilatation system is comprised of an elongated flexible advancement member which terminates in a tubular tracking member slidable over a guidewire. An inflatable balloon has proximal and distal ends, the proximal end communicating with an inflation channel, and the distal end attaching to the...http://www.google.fr/patents/US6394995?utm_source=gb-gplus-shareBrevet US6394995 - Enhanced balloon dilatation system
