Patent ID: 8630694
Filing Date: 2014-01-14
Classification: A61B,A61M

Abstract:
1. A medical system, comprising: a magnetic resonance imaging system comprising an imaging bore; a fluid-driven injector disposed within the imaging bore and comprising a fluid delivery device, a fluid conduit, a working fluid, and a substantially non-ferrous and substantially non-magnetic fluid drive, wherein the fluid drive is configured to not interfere with magnetic resonance imaging; at least one pump; a flowpath extending between the at least one pump and the fluid drive; a working fluid, wherein the at least one pump provides the working fluid to the fluid drive through the flowpath; and a wall with shielding, wherein the at least one pump and the fluid-driven injector are disposed on opposite sides of the wall; wherein the fluid drive is responsive to pressure of the working fluid from the at least one pump to impart a sequence of forces to drive the delivery device to flow medical fluid from the injector, wherein the fluid drive is configured to sequentially squeeze the fluid conduit, wherein the fluid drive comprises a plurality of pistons disposed in series along the fluid conduit, and wherein the pistons are configured to move sequentially to impart the sequence of forces at different times and axial positions along the fluid conduit.