HAND HELD ULTRASONIC BLOOD FLOW DETECTORS

Brand	Owner (click to sort)	Address	Description
DOPLETTE	PHYSIO-CONTROL CORPORATION	2607 2ND AVE. SEATTLE WA 98121	HAND-HELD ULTRASONIC BLOOD FLOW DETECTORS;
PHYSIO-CONTROL	PHYSIO-CONTROL, INC.	11811 Willows Road NE Redmond WA 98052	[HAND-HELD ULTRASONIC BLOOD FLOW DETECTORS; OBTURATORS]; AND ACCESSORIES FOR COMBINATION HEART MONITOR AND DEFIBRILLATOR UNITS-NAMELY, BATTERY CHARGERS, BATTERY DISCHARGERS, ECG MODULATORS, ECG DEMODULATORS, ECG TELEMETRY SYSTEMS INCLUDING RF TRANSMITTERS AND RECEIVERS, EMERGENCY CARTS FOR TRANSPORTING COMBINATION HEART MONITOR AND DEFIBRILLATOR UNITS, LEAD SELECTORS FOR PATIENT-ENGAGING ELECTRODES, PREJELLED PATIENT-ENGAGING ELECTRODES, ACCESSORY BAGS, PEDIATRIC PADDLE ATTACHMENTS FOR DEFIBRILLATOR PATIENT-ENGAGING ELECTRODES, BATTERIE, ECG RECORDER PAPER,[ EXTENSION MICROPHONES FOR USE WITH ECG DEMODULATORS];
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Ultrasonic acoustic imaging finds many uses, particularly in the field of non-invasive medical testing. Detection of Doppler shifted acoustic frequencies permits observation of flow of a particle-containing liquid, for example, blood flow. In order to see slower moving blood by Doppler ultrasound investigation, as the blood moves from major blood vessels into arterioles and capillaries, it is necessary to lower the pulse repetition frequency. The herein disclosed invention is an interleaving technique that lowers the effective pulse repetition frequency at each probe position without exacting these system penalties.