BEEE19

BIOMEDICAL INSTRUMENTATION


OBJECTIVE: To inculcate the basics of human anatomy,measurement and recording of related parameters and processing methods of bio signals.

1.INTRODUCTION TO HUMAN PHYSIOLOGICAL SYSTEMS

Cell and its structure - Electrical and mechanical activity of heart - cardiovascular system- central nervous system - respiratory system - musculo-sketetal system - digestive system - kidney.

ELECTRODES

Origin of resting and action potential - propagation of action potential- electrode potential - electrode impedance- equivalent circuit for extra cellular electrodes - micro electrodes- micropipette and their equivalent circuits - PH, PO2 and PCO2 electrodes.

2.MEASUREMENT OF NON-ELECTRICAL PARAMETERS

Blood flow, blood pressure, respiration rate, temperature, mean and instantaneous heart rate measurements.

BIOSIGNAL ACQUISITION

Special requirements of physiological signal amplifiers - various types of pre amplifiers - Isolation amplifier - Differential amplifier - Instrumentation amplifier - bridge amplifier - chopper amplifier - Biosignal analysis - signal recovery and Data acquisition.

3.BIOPOTENTIAL RECORDERS

Electro cardiography - echocardiography - vector cardiography - electro encephalography - echo encephalography - applications of ECG and EEG in various investigations - Arrythonia monitor.

OPERATION THEATER EQUIPMENT

Short wave Diathermy - Microwave Diathermy - ultrasonic diathermy - surgical diathermy - anaesthetic monitor - Gas analyses - PH meters, Oxymeters.

4.PHYSIOLOGICAL STIMULATORS

Cardiac pacemakers - Defibrillators - nerve and muscle stimulators - Heart valves - heart-lung machines -artificial kidney - bio telemetry.

RADIOTHERAPEUTIC EQUIPMENTS

Applications of X-rays in various investigations - Generation of X- rays - properties of X-rays - Diagnositic X-rays - Super voltage therapy - radiation detectors - properties of isotopes - usage of isotopes in various investigation.

5.RECENT TRENDS IN BIOMEDICAL INSTRUMENTATION

Computer analysis of ECG and EEG - computers in patient monitoring system - computers in clinical laboratories - application of lasers in various investigations - endoscopes - computer tomography - thermography - Ultrasonic imaging systems - NMR imaging - application of microprocessors in medical instrumentation, electron microscopy.

PATIENT-SAFETY

Micro and macro shocks - possible causes of electric shock - GFL and other measures against shock - recent trends in patient isolation.