A blood detection system is used to detect blood in a patient undergoing an extracorporeal blood therapy, such as hemodialysis or apheresis. The blood detection system uses a digital video device, which may be a camera, such as a standard digital video camera, a low light camera, an infrared camera,...http://www.google.de/patents/US20090080757?utm_source=gb-gplus-sharePatent US20090080757 - DETECTING ACCESS DISCONNECT BY PATTERN RECOGNITION
