Automated Medical Infusion Device and Method with Improved Accuracy and Safety Characteristics and MRI-Safe Capability

摘要

A medical infusion device and related method of use for controlling the flow rate of a fluid into a patient's body, comprising: a tube for carrying fluid from a proximal end to a distal end thereof under the action of a driving pressure, which tube is flexible or has a flexible segment at some point along its length; a clamping element capable of preventing fluid flow by fully occluding a portion of the flexible tube or the flexible segment; a movable pusher element for acting variably against the clamping element to variably reduce the occlusion of the clamped portion of the flexible tube or flexible segment and thereby provide a controlled rate of fluid flow; two independently controllable electromechanically controlled actuator elements capable of moving variably over a prescribed range; and a mechanical linkage among the actuator elements, the pusher element and the clamping element.