A device for therapeutically treating a desired region of a patient's body with a nonambient temperature fluid includes a fluid feed reservoir, a fluid collection reservoir, and a fluid flowpath therebetween. The flowpath is made up of a heat transfer pad placed over the desired treatment region, an...http://www.google.es/patents/US5324319?utm_source=gb-gplus-sharePatente US5324319 - Gravity driven therapeutic fluid circulation device
