Patent ID: 8500621
Filing Date: 2013-08-06
Classification: A61M,G06F,G16H,G16Z

Abstract:
1. A method of providing a pump for pumping a fluid, comprising designing a desired initial fluid flow pattern in an extensible bladder having an elastic bladder wall and inlet and discharge ports, developing an initial mathematical computer model of the desired initial fluid flow pattern in the extensible bladder, determining the location, using the initial computer model of the desired initial fluid flow pattern, of various portions of the elastic bladder wall as a function of time that are required to induce the desired initial fluid flow pattern, wherein said determining the location considers an effect of movement of the elastic bladder wall on flow dynamics in the extensible bladder, and an effect of flow dynamics on a configuration of the bladder, determining physical characteristics of each portion of the elastic bladder wall and of a pump operating system such that viscoelastic properties vary throughout the bladder, and such that each portion of the bladder when elastically expanded and contracted will have movement as a function of time similar to the initial computer model and hence will approximate the desired initial fluid flow pattern, and thereafter computer modeling the pump with the elastic bladder and the pump operating system having a design that will elastically expand the bladder during a filling stage and the bladder elastically contracting in a discharge stage to generate a flow pattern approximating the desired initial fluid flow pattern, and thereafter constructing the pump including the bladder and the pump operating system based on the computer modeled pump.