A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating...http://www.google.com.au/patents/US7763269?utm_source=gb-gplus-sharePatent US7763269 - Therapeutic foam
