Patent ID: 8690829
Filing Date: 2014-04-08
Classification: A61M

Abstract:
1. An IV liquid infusion delivery apparatus capable of operating within an MRI environment, the apparatus comprising: a housing having one or more RF shielding structures to facilitate operation in an MRI environment; a non-magnetic positive-displacement pump disposed to receive a liquid conduit therein and to transfer IV liquid through the liquid conduit from an IV container source; a controller configured to receive input control information from an input keypad of the housing, the controller being disposed within a first RF shielding structure of the housing; drive circuitry configured to receive control signals from the controller and to output electrical drive signals at ultrasonic frequencies in response thereto, the drive circuitry being disposed within the first RF shielding structure of the housing; and a non-magnetic ultrasonic motor configured to drive the positive-displacement pump to provide mechanical movement to the positive displacement of IV liquid from the IV container source through the liquid conduit in response to the electrical drive signals output by the drive circuitry.