초록 ▼

A method for controlling a pump for delivery of liquid to an organ over a series of fixed-length time intervals f, each interval f comprising a time t1 and a time t2 wherein t1+t2 equals the length of interval f. The method comprises allowing output pressure of the pump to decrease over time t1, inc

A method for controlling a pump for delivery of liquid to an organ over a series of fixed-length time intervals f, each interval f comprising a time t1 and a time t2 wherein t1+t2 equals the length of interval f. The method comprises allowing output pressure of the pump to decrease over time t1, increasing output pressure of the pump over time t2, comparing achieved pump output pressure to a predetermined pressure at about the end of interval f, and at least one of (i) adjusting t1 and t2 if necessary so the predetermined pressure is approximated by the output pressure at the end of the next interval f, and (ii) adjusting a rate of change of the output pressure during at least one of t1 and t2 if necessary so the predetermined pressure is approximated by the output pressure at the end of the next interval f.

대표청구항 ▼

What is claimed is: 1. A computer-executable method for controlling a pump for delivery of a liquid to an organ or tissue over a repeated series of fixed-length time intervals f, each interval f comprising a time t1 and a time t2 wherein t1+t2 equals the length of interval f, the method comprising:a

What is claimed is: 1. A computer-executable method for controlling a pump for delivery of a liquid to an organ or tissue over a repeated series of fixed-length time intervals f, each interval f comprising a time t1 and a time t2 wherein t1+t2 equals the length of interval f, the method comprising:a) allowing output pressure of the pump to decrease over time t1,b) increasing output pressure of the pump over time t2,c) comparing achieved pump output pressure to a predetermined pressure at about the end of interval f,d) determining, based on the comparison between the achieved pump output pressure and the predetermined pressure, whether it is necessary to (i) adjust t1 and t2, (ii) adjust a rate of change of the output pressure during at least one of t1 and t2, or both (i) and (ii) so that the predetermined pressure is approximated by the output pressure at the end of next interval f, ande) at least one of (i) adjusting t1 and t2 if necessary so that the predetermined pressure is approximated by the output pressure at the end of the next interval f, and (ii) adjusting a rate of change of the output pressure during at least one of t1 and t2 if necessary so that the predetermined pressure is approximated by the output pressure at the end of the next interval f based on the determination of the step (d).