Patent Issued for Flow restriction devices, methods, and systems (USPTO 12017042).

A patent has been issued to NxStage Medical Inc. for flow restriction devices, methods, and systems. The patent describes a variable pinch valve that provides precise flow control by progressively pinching a tube. This valve can be used in a flow regulation system to control the flow of separate fluids, which can be combined to form a mixture. The patent includes detailed claims and technical specifications for the variable flow restrictor. [Extracted from the article]