Patent ID: 7556619
Filing Date: 2009-07-07
Classification: A61G,A61M

Abstract:
1. An injector system comprising: a source of injection fluid; a pump device; a fluid path set in fluid connection with the source of injection fluid and the pump device, and comprising a multi-position valve; an air detector assembly operatively engaged with a portion of the fluid path set and adapted to detect the presence of air in the fluid path set; a fluid control device operatively associated with the multi-position valve of the fluid path set and disposed downstream of the pump device, the fluid control device comprising a valve actuator to automatically operate the multi-position valve, the valve actuator comprising a sensor indicating the presence of the multi-position valve in the valve actuator and adapted to close the multi-position valve to isolate the pump device and fluid flow from a patient and stop flow of the injection fluid to the patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient; a drip chamber in fluid communication with the fluid path set, the drip chamber comprising an elongated body having a top end, a bottom end and a raised projection, the raised projection being substantially rectangular in shape and extending longitudinally from the top end along the drip chamber body and terminating adjacent to the bottom end; and a fluid level sensing mechanism operably associated with the fluid control device, the fluid level sensing mechanism comprising: