Patent ID: 6808517
Filing Date: 2004-10-26
Classification: A61M

Abstract:
A method for operating a breastpump comprising:generating a pressure change cycle according to a mathematical expression: y&af;(x)=V&af;[A10&af;(Tx)10+A9&af;(Tx)9+A8&af;(Tx)8+A7&af;(Tx)7+A6&af;(Tx)6+A5&af;(Tx)5+A4&af;(Tx)4+A3&af;(Tx)3+A2&af;(Tx)2+A1&af;(Tx)+A0];using values as follows: A10A9A8A7A6Maximum00âˆ’5165601787300âˆ’2473330curveMinimum00âˆ’5165601787300âˆ’2473330curveA5A4A3A2A1Maximum1752850âˆ’680860147200âˆ’17360370curveMinimum1752850âˆ’680860147200âˆ’17360370curveA0Maximum0curveMinimum0curvewherein T ranges from about 0.98 to about 1.5 and V ranges from about 1.25 to about 0.15, x is time in seconds and y(x) is vacuum in mmHg, and repeating the pressure change cycle after a pause.