US 12,070,577 B2
System and method for fluid delivery using pressure-based motor control for fluid injector devices
Michael McDermott, Berlin (DE); William Barone, Pittsburgh, PA (US); and Randy Lee, Pittsburgh, PA (US)
Assigned to BAYER HEALTHCARE LLC, Whippany, NJ (US)
Appl. No. 17/776,332
Filed by BAYER HEALTHCARE LLC, Whippany, NJ (US)
PCT Filed Nov. 20, 2020, PCT No. PCT/US2020/061474
§ 371(c)(1), (2) Date May 12, 2022,
PCT Pub. No. WO2021/102242, PCT Pub. Date May 27, 2021.
Claims priority of provisional application 62/938,397, filed on Nov. 21, 2019.
Prior Publication US 2022/0395633 A1, Dec. 15, 2022
Int. Cl. A61M 5/145 (2006.01); A61M 5/142 (2006.01)
CPC A61M 5/14566 (2013.01) [A61M 2005/14208 (2013.01); A61M 2205/332 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/502 (2013.01); A61M 2205/70 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A fluid injector system configured for use in administering at least one fluid to a patient, the fluid injector system comprising:
a memory for storing therein a programmed flow rate to be delivered during execution of a fluid delivery procedure using a fluid injector and a maximum allowable deviation in the programmed flow rate;
at least one sensor configured for measuring a pressure of the at least one fluid, wherein the pressure is generated by at least one drive component of the fluid injector during execution of the fluid delivery procedure; and
a control device operatively associated with the at least one drive component of the fluid injector, the control device including at least one processor programmed or configured to perform an operation comprising:
determining an actual flow rate during a specified time interval of the fluid delivery procedure based on a change in pressure measured by the at least one sensor over the specified time interval;
determining a deviation of the actual flow rate from the programmed flow rate over the specified time interval; and
calculating a new programmed flow rate for a subsequent time interval after the specified time interval based on the programmed flow rate and the deviation of the actual flow rate from the programmed flow rate over the specified time interval.