Measuring and testing – Fluid pressure gauge – Combined
Reexamination Certificate
2008-03-04
2008-03-04
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
Combined
Reexamination Certificate
active
11160586
ABSTRACT:
A pressure measurement device usable for monitoring pressure of fluids such as blood, waste, and replacement fluid in a blood treatment system provides a reliable signal and other benefits by virtue of a number of features of the various embodiments disclosed. The pressure of fluid carried by a vessel or tube is measured by measuring a change in shape of the vessel or tube via a sensor element contacting it. Materials, shape, and mechanical support cooperatively ensure that the little inelastic strain occurs and pressure measurements are repeatable. The embodiments are compatible with the use of disposable vessels and tubes.
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Brugger James M.
Burbank Jeffrey H.
McDowell Christopher
Treu Dennis M.
Catan Mark A.
Kirkland, III Freddie
Lefkowitz Edward
Miles & Stockbridge P.C.
Nx Stage Medical, Inc.
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