Samantha M. Planas,Kathleen M. Higginson,Amit J. Patel
申请号：
US14577383
公开号：
US09849226B2
申请日:
2014.12.19
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A method is provided for the real time calibration of a pump that is part of a reusable hardware component having a programmable controller during a blood separation procedure where fluid is flowed through a tubing in a tubing set by action of the pump. The method comprises programming the controller with a continuous function defining a relationship between pump inlet pressure and pump stroke volume； commencing the fluid processing procedure to operate the pump to draw fluid through the tubing； measuring fluid pressure in the tubing at the inlet of the pump； calculating a current pump stroke volume with the controller based on the continuous function and the pump rotational rate； and adjusting the pump rotational rate utilized by the controller to control the procedure to achieve a target fluid flow rate. The continuous function defining the relationship between pump inlet pressure and the pump stroke volume may be empirically determined over a predetermined range of inlet pressures.
