A mechanical dilatation and medicament delivery device for enlarging a flow passage of a vessel by dilating and delivering a therapeutic agent or medicament to an obstruction in the vessel. The present invention comprises a substantially cylindrically shaped expansion member and includes a means engaged...http://www.google.com.au/patents/US20030100886?utm_source=gb-gplus-sharePatent US20030100886 - Mechanical apparatus and method for dilating and delivering a therapeutic agent to a site of treatment
