04174637 is referenced by 47 patents and cites 3 patents.

A pressure monitoring system especially suitable for use with extra-corporeal circulation systems such as dialyzers, blood cell separators, oxygenators and the like, in which the internal system pressure must be monitored at one or more locations in the blood circuit, and appropriate warnings provided of pressure increases or decreases within defined limits. An initial pressure measuring cycle is provided and must be completed successfully before the main operating cycle of the overall system can begin. A pressure transducer provides signals to a digital closed-loop system which provides a suitable compensation during the initial or primary cycle and then holds that compensation value during the machine running cycle. Excursions of pressure beyond upper and lower limits of the stored reference or compensation value, in either direction, will cause the running cycle to terminate automatically.

Title
Pressure monitoring system
Application Number
5/952766
Publication Number
4174637
Application Date
October 19, 1978
Publication Date
November 20, 1979
Inventor
Gary A Trudgen
Endwell
NY, US
Alfred P Mulzet
Endicott
NY, US
Agent
Paul M Brannen
Assignee
International Business Machines Corporation
NY, US
IPC
G01L 7/02
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