05026348 is referenced by 79 patents and cites 18 patents.

An in-line fluid conduit condition analyzer which includes a chamber placed in the conduit flow path and having one wall forming a piezoceramic bender that varies the chamber volume (or pressure) according to a predetermined waveform or noise spectrum and an associated piezoceramic pressure or displacement sensor. The time derivative of the displacement or the pressure are analyzed under computer control to identify conduit abnormalities. In particular application to intravenous fluid administration to patients, the system is capable of distinguishing a number of abnormalities including cathether obstruction, catheter needle out of the vein, catheter needle into the vein, as well as fluid bubble presence or conduit disconnection.

Title
Apparatus and method for the detection of IV catheter obstruction and extravasation
Application Number
7/203280
Publication Number
5026348
Application Date
June 6, 1988
Publication Date
June 25, 1991
Inventor
Jose G Venegas
Nahant
MA, US
Agent
Weingarten Schurgin Gagnebin & Hayes
Assignee
The General Hospital Corporation
MA, US
IPC
G08B 21/00
A61M 5/00
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