A stirring device for facilitating dialysis includes a housing, an axle with a first end portion extending out of the housing and a second end portion extending into the housing, a sprocket connected to the second end portion of the axle, a motor unit provided inside the housing, a circular cam plate...http://www.google.es/patents/US5183564?utm_source=gb-gplus-sharePatente US5183564 - Stirring device for facilitating dialysis
