Differential pressure based flow sensor assembly for medication delivery monitoring and method of using the same

A differential pressure based flow sensor assembly and method of using the same to determine the rate of fluid flow in a fluid system. The sensor assembly comprises a disposable portion, and a reusable portion. A flow restricting element is positioned along a fluid flow passage between an inlet and...

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Bibliographische Detailangaben
Hauptverfasser:	BRUMUND RYAN, FATHALLAH MARWAN A, JACOBSON JAMES D, KHAIR MOHAMMAD M, CHOUDHURY HRISHIKESH, JOHNSON TOM, CHO STEVEN T, LOWERY MICHAEL G, KEELY PATRICK B, BARCLAY BRIAN, WALSWORTH FRANK, ZIEGLER JOHN S
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MEDICAL OR VETERINARY SCIENCE METERING BY VOLUME PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A differential pressure based flow sensor assembly and method of using the same to determine the rate of fluid flow in a fluid system. The sensor assembly comprises a disposable portion, and a reusable portion. A flow restricting element is positioned along a fluid flow passage between an inlet and an outlet. The disposable portion further has an upstream fluid pressure membrane and a downstream fluid pressure membrane. The reusable portion has an upstream fluid pressure sensor and a downstream fluid pressure sensor. The upstream fluid pressure sensor senses the upstream fluid pressure at a location within the fluid flow passage between the inlet and the flow restricting element. The downstream fluid pressure sensor senses the downstream fluid pressure at a location within the fluid flow passage between the flow restricting element and the outlet. The process utilizes output of the sensors to calculate the flow rate of the fluid.