medium such as gas, fluid or a mixture thereof at a particular temperature over a guide wire to the site of...http://www.google.co.uk/patents/US5902299?utm_source=gb-gplus-sharePatent US5902299 - Cryotherapy method for reducing tissue injury after balloon angioplasty or stent implantationAdvanced Patent SearchPublication numberUS5902299 APublication typeGrantApplication numberUS 08/902,020Publica