Calibration of Biomedical instrumentsCalibration of Biomedical instruments

Patient care now a days, is dependent on wide Patient care now a days, is dependent on wide variety of medical equipment for diagnosis as well variety of medical equipment for diagnosis as well as for therapeutics and follow up action . Unless as for therapeutics and follow up action . Unless properly calibrated, the outcome of the diagnostic properly calibrated, the outcome of the diagnostic

equipment and effect generated by therapeutic equipment and effect generated by therapeutic equipment will be error prone and may adversely equipment will be error prone and may adversely

affect the treatment of the patient. There for affect the treatment of the patient. There for regular calibration against appropriate standards regular calibration against appropriate standards

becomes essential function to be carried out.becomes essential function to be carried out.

What is Calibration ?What is Calibration ?

A set of operations, performed in A set of operations, performed in accordance with a definite procedure, that accordance with a definite procedure, that compares the measurement performed by compares the measurement performed by

an instrument to those made by a more an instrument to those made by a more accurate instrument or a standard for the accurate instrument or a standard for the purpose of detecting and reporting or by purpose of detecting and reporting or by

adjusting, error met in the instrument adjusting, error met in the instrument tested.tested.

Purpose of Calibration ?Purpose of Calibration ?

To ensure reading from an instrument are To ensure reading from an instrument are consistent with other instruments.consistent with other instruments.

To determine the accuracy of the To determine the accuracy of the instrument (that it can be trusted for its instrument (that it can be trusted for its observed/ displayed measured value).observed/ displayed measured value).

Objective of Calibration facilityObjective of Calibration facility

To ensure that products are manufactured to To ensure that products are manufactured to specifications.specifications.

To improve the quality of Health care facilities.To improve the quality of Health care facilities. To ensure patient safety and welfare of human life.To ensure patient safety and welfare of human life. To increase quality & value of product.To increase quality & value of product. It will improve international acceptability of test It will improve international acceptability of test

results.results. It will reduce technical barriers in trade. It will reduce technical barriers in trade.

Measuring & calibrating Measuring & calibrating instruments used for Calibration instruments used for Calibration

of Biomedical Equipmentsof Biomedical Equipments

Multi Parameter Simulator:Multi Parameter Simulator:

It generates number of ECG waveforms to test It generates number of ECG waveforms to test & verify ECG machine& patient monitor. & verify ECG machine& patient monitor. These waveforms are used to test frequency These waveforms are used to test frequency response,sensitivity,gain,paper speed, internal response,sensitivity,gain,paper speed, internal calibration, system dumping, R-wave calibration, system dumping, R-wave calibration. This instrument also offers signals calibration. This instrument also offers signals to calibrate parameter of Bed side Monitor & to calibrate parameter of Bed side Monitor & calibration i.e., respiration, temperature, BP. calibration i.e., respiration, temperature, BP.

SpO2 Simulator:SpO2 Simulator:

It determines the performance of standard It determines the performance of standard Pulse Oximeter.Pulse Oximeter.

It acts as virtual patient’s index finger, to It acts as virtual patient’s index finger, to simulate a patient with virtually any simulate a patient with virtually any combination of blood oxygen condition & combination of blood oxygen condition & pulse condition (BPM) to see whether the pulse pulse condition (BPM) to see whether the pulse oximeter’s results match the simulator.oximeter’s results match the simulator.

It can also tests the complete probe and It can also tests the complete probe and electronic assembly optically or electrically.electronic assembly optically or electrically.

Defibrillator Analyzer :Defibrillator Analyzer :

It measured the delivered energy in Jules It measured the delivered energy in Jules (Watt-Second) from defibrillator by simulating (Watt-Second) from defibrillator by simulating the human body’s resistance.the human body’s resistance.

It also measured the synchronization time in It also measured the synchronization time in millisecond & defibrillator charge time in millisecond & defibrillator charge time in second.second.

Infusion Device Analyzer:Infusion Device Analyzer:

It can measure following parameter of infusion It can measure following parameter of infusion device.device.

Volume.Volume. Flow Rate.Flow Rate. Occlusion Pressure.Occlusion Pressure.

Electrosurgical Analyzer:Electrosurgical Analyzer:

It can measure following parameters of It can measure following parameters of Electrosurgical Unit.Electrosurgical Unit.

Generator Output.Generator Output. HF Leakage Current.HF Leakage Current. Contact Quality monitor Contact Quality monitor

Incubator Analyzer: Incubator Analyzer:

It can measure the following parameters of It can measure the following parameters of Baby Incubator/ Radiant Warmer.Baby Incubator/ Radiant Warmer.

Temperature.Temperature. Air Flow.Air Flow. Humidity.Humidity. Sound. Sound.

Ultrasound Wattmeter:Ultrasound Wattmeter:

It measures the parameter of Ultrasonic It measures the parameter of Ultrasonic Therapeutic Device i.e., Therapeutic Device i.e.,

Output Power in watts (For variety of Output Power in watts (For variety of transducer shapes & sizes)transducer shapes & sizes)

International Safety Analyzer: International Safety Analyzer: This instrument is used to measure the This instrument is used to measure the

parameter for electrical safety of hospital and parameter for electrical safety of hospital and laboratory electromedical equipment. laboratory electromedical equipment.

It can measure following parameters.It can measure following parameters.

Main voltage Main voltage Current consumption Current consumption Earth resistance Earth resistance Patient Leakage current Patient Leakage current Earth Leakage current Earth Leakage current Insulation resistanceInsulation resistance