Patent ID: 8273049
Filing Date: 2012-09-25
Classification: A61M,F04B,F17D,Y02A,Y10T

Abstract:
1. A liquid handling pump cassette comprising: a housing having a first plate spaced apart from a second plate, the first plate forming a first face of the housing and the second plate forming an opposing second face of the housing, and each plate having a corresponding perimeter defining one or more ends of the housing, the housing comprising: a liquid inlet line positioned at an end of the housing and a liquid outlet line positioned at an end of the housing; a first reciprocating membrane pump within said housing, said first pump being arranged to pump a first liquid from said liquid inlet line to said liquid outlet line via a first flow path within said housing; a secondary fluid port on said housing, said secondary fluid port communicating through the first face of the housing with a second flow path in the housing; and a second pump, said second pump being arranged to pump fluid through said secondary fluid port via the second flow path within the housing, wherein said second flow path is in fluid communication with said liquid outlet line.