The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1991
Filed:
Jun. 06, 1988
Jose G Venegas, Nahant, MA (US);
The General Hospital Corporation, Boston, MA (US);
Abstract
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.