Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2005-11-15
2005-11-15
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
C073S866500
Reexamination Certificate
active
06964204
ABSTRACT:
The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid flow passage between the inlet and the outlet, an upstream fluid pressure sensor, a downstream fluid pressure sensor, an upstream signal contact connected to the upstream fluid pressure sensor, and a downstream signal contact connected to the downstream fluid pressure sensor. The housing has an upstream portion defining an upstream port, a downstream portion defining a downstream port, and a probe access port configured to provide access of a probe to at least one of the upstream signal contact and downstream signal contact. The housing can also define a second fluid flow passage in parallel with the first fluid flow passage. The device can be disposable.
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Cho Steve T.
Christianson Harlow B.
Clark Gene E.
Sperinde John M.
Crabb Michael R.
Hospira, Inc.
Mack Corey D.
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