MEDICAL ELECTRONICS LABORATORY :

1. Recording of ECG signal and analysis                                                       [TOC]

i. ELECTRO CARDIO GRAPH TRAINER [VMET-06] :

Built-in battery for safety Isolation

Signal conditioner provided to amplify the low frequency signals

IBM serial port interface provision

Local Digital display to indicate the Heart Rate

    # 16x2 Alphanumeric LCD with backlight

    # 4 Keys provided to access the options

Test points provided to view the waveforms in CRO

Holding Clips provided to fix the electrodes in hands and Legs.

Windows based powerful software to view the ECG in PC.

Facility for OFF-Line analysis, Zooming & Hard copy.

Note : One IBM PC should be provided by the institution at the time of demonstration & Installation of the above equipment (or) optionally to be purchased.

Twin channel, multi frequency

Automatic attenuation for continuous wave audiometry

By pure tone testing

Automatic threshold testing, pulsed tone available

Built in monitor loud speaker, patient hand switch(micro switch)

Data storage capability with RS232 computer interface

Microcontroller Based Local digital frequency selection display

    # 16x2 Alphanumeric LCD with backlight

    # 4 Function Keys

Computer plot of audiogram

Facility of stenger test

Housed in metal cabinet with mimic logic

Probes :

     # Twin direct ear probes (right & left)

     # Feel free probes

     # Masking attenuator option

Note : One IBM PC should be provided by the institution at the time of demonstration & Installation of the above equipment (or) Optionally to be purchased.

3. Recording of EMG ELECTRO MYOGRAPHY TRAINER [VMET-03][TOC]

Electrodes (Needle, surface & Concentric needle)

DC coupled differential amplifier (EMA)

50µV sensitivity

High frequency response upto 5 KHz

Time constant 0.1, 0.3, 0.7 second

Gain 50µV to 2.5mV for 1 volt, voltage output to CRO

Experiments that can be performed with this EMA and the simulator

# Muscular voluntary contraction signals

# Electric stimulation contraction signals

# Nerve conduction velocity of peroneal nerve

# Sensory nerve conduction velocity of the ulnar nerve

Note : One IBM PC should be provided by the institution at the time of demonstration & Installation of the above equipment (or) Optionally to be purchased.

4. Study and analysis of safety aspects of surgical diathermy                                    [TOC]

 a. Clinical CW Surgical diathermy unit with Surgical electrodes :

100 watts unipolar/Bipolar output with switches

Provision for audio alarm for inactive plate electrodes open (avoid danger to patient)

Electrodes for surgery

 b. Spark gap diathermy unit with Experimental Electrodes :

350, 500 KHz cutting and coagulation currents

Safety aspects with respect to plate contact study

Sample electrodes

5. Monitoring of electrical safety of hospital equipments Study of,                            [TOC]

 a. Macroshock

 b. Microshock from more than one diagnostic instrument

 c. Simulation of instrument leakage leading to ventricular fibrillation

Two clinical diagnostic instruments with facility of simulating leakage in each.

Measurement of leakage current with micro-ammeter [Micro shock], Milliammeter (Macro shock)

Apparatus for study of electric current through the body - Isolation transformer provided.

6. Measurement of pH, pO2 and conductivity                                                            [TOC]

3½ digit display to view the pH value

0 to 14 pH

0 to 2000 mV

Combined type Electrode

A glass beaker provided with capacity of 500ml

Buffer tablets provided for pH of 7,4,9.2

Mimic logics in the front panel.

Note : Since the Real Blood availability is difficult, standard pH tablets will be provided for measurement of pH

 b. Accessories for pO2, pCO2 (Chemical Method)

 c. Oximetry method for pO2 OXIMETER TRAINER [VMET-07]

Two light sources and detectors of different wavelength

Two different wavelength generators to sense the blood oxygen

Signal conditioners with amplifiers

Microcontroller based digital display

    # 16x2 Alphanumeric LCD display

    # 4 Function keys to access the Options

 d. Conductivity Measurement Trainer [VMET-05]:

Electrodes provided to test the conductivity of the given solution

Signal conditioner provided

Built-in power supply

Digital display to indicate the conductivity

Logical diagram implementation

500ml glass beaker with stand provision to hold the electrode.

7. Recording of various physiological parameters using patient monitoring system and telemetry units                                                                                                         [TOC]

1. Electro cardio graph

2. Respiration Rate

3. Temperature

All the above physiological parameters are signal conditioned and feed to ADC

IBM serial port Interface provision (RS485 standard)

Microcontroller based digital display

    # 6x2 Alphanumeric LCD display

    # 4 Function keys to access the Options

A Powerful windows based software to view the parameters in personal computer

Mimic Logic in the panel

Detailed Documentation.

8. Study of spectra of bio signals using spectrum analyzer                                        [TOC]

Totally simulated experiments for,

 1. Simulation of ECG and for various pathological symptoms like, S-T depression, Ischemia, WPW With switch selected outputs

 2. Simulation of EEG signals for various rhythms & abnormal signals patterns Switch selected

9. Mini projects Suggested :                                                                                        [TOC]

a. Photic stimulation & EEG response

b. Galvanic skin reflex project

c. Demand pacemaker

d. Pulse monitor [VMET-04]