Patent ID: 8540499
Filing Date: 2013-09-24
Classification: A61K,C12M,C12Q,F04B

Abstract:
1. A fluid cycling unit for maintaining and cycling fluid volumes in a chamber, comprising: a housing; a first flexible fluid reservoir disposed in said housing, said first fluid reservoir being in fluid communication with a chamber; a second flexible reservoir located in said housing and adjacent to said first reservoir, said second flexible reservoir being in fluid communication with a pressure source; a sensor plate movably disposed in the housing between said first and second reservoirs, wherein said second reservoir is pressurized to move said sensor plate in relation to said first reservoir to cause fluid cycling and maintain fluid volumes in the chamber; and a sensor indicator connected to said sensor plate, wherein physical expansion and contraction of said first reservoir moves said sensor indicator within said housing such that the position of said sensor indicator can be sensed by a sensor in communication with a pressure source, and wherein the position of said sensor indicator drives the sensor to increase or reduce pressure within said second reservoir.