Patient monitoring apparatus; Patient monitoring instruments; Transducers adapted for use in patient monitoring systems; Medical pumps; Pumps for medical purposes; Pumps for surgical purposes; Pumps for veterinary use; Apparatus for monitoring vital signs; Sensing apparatus for medical use in monitoring the vital signs of patients; Sensing devices for medical use in monitoring the vital signs of patients; Sensor apparatus for medical use in monitoring the vital signs of patients; Anaesthesia monitoring apparatus for use in hospital operating rooms; Anaesthesia monitoring apparatus for use in intensive care units; Anaesthesia monitoring apparatus for use in recovery rooms; Apparatus for monitoring patients; Blood pressure monitors; Carbon dioxide monitors for use in measuring levels in patients; Electrocardiograph monitors; Electronic blood pressure monitors (for medical use); Electronic carbon dioxide monitors used for medical purposes; Electronic heart rate monitors (for medical use); Electronic heart signal monitors (for medical use); Electronic monitoring instruments for medical use; Electronic temperature monitors for medical use; Heart rate monitors; Heart signal monitors; Monitoring apparatus for medical use; Oxygen concentration monitors for medical use; Respiratory monitors (medical); Medical ventilators; Portable breathing apparatus for artificial respiration