Passive acoustic blood circulatory system analyser

摘要

A device 50 for analysing the blood circulatory system comprises a probe 100 with a microphone 106 which detects the acoustic signal generated by blood flowing in the blood vessel 104 (e.g. carotid artery in the neck). The probe 100 is connected to processing circuitry 108 which analyses the blood flow through the vessel 104. The device 50 may determine whether the blood flow within the vessel is occluded and can distinguish between stenosis and a plauque. The device 50 may compare the acoustic signal with previously stored signals. Abnormal heart rhythms, conduction defects and heart valve defects can be diagnosed.