Electromagnetic flow meter

Claim 1

A FLOW SENSOR FOR MONITORING TH FLOW OF BLOOD OR OTHER ELECTRICALLY CONDUCTIVE FLUID THROUGH A BLOOD VESSEL OR DEFORMABLE CONDUIT COMPRISING: A TUBULAR DIELECTRIC SUPPORT MEMBER HAVING AN APERTURE THERETHROUGH OF TRANSVERSE DIMENSION AND SHAPE CORRESPONDING TO THE BLOOD VESSEL OR CONDUIT TO BE MONITORED; A PAIR OF ELECTRODES PENETRATING THE SUPPORT MEMBER AT SPACED POSITIONS; LEADS MEANS CONNECTED TO RESPECTIVE ELECTRODES; A SINGLE COIL COMPRISING A NUMBER OF TURNS OF INSULATED WIRE; SAID COIL FORMED TO CONFORM WITH TEH EXTERNAL SURFACE OF THE SUPPORT MEMBER AND POSITIONED THEREON SO AS TO GENERATE A MAGNETIC FIELD IN THE LUMEN HAVING A COMPONENT TRANSVERSE TO THE FLUID FLOW; SAID COIL INCLUDING PORTIONS EXTENDING OVER GREATER THAN HALF OF THE CIRCUMFERENTIAL LENGTH OF THE SUPPORT MEMBER; SAID SUPPORT MEMBER LONGITUDINALLY SEGMENTED IN THE PERIPHERAL REGION OUTSIDE OF THE COIL TO CONSTITUTE AN OPENABLE PORTION FOR INSERTION OF A DEFORMABLE FLUID CONDUIT INTO THE APERTURE; AND LEAD MEANS FOR SAID COIL TO CONDUIT CURRENT TO COIL TO GENERATE THE MAGNETIC FIELD.