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Questions and Answers
What is the primary goal of a biomedical instrumentation system regarding the physiologic system?
What is the primary goal of a biomedical instrumentation system regarding the physiologic system?
What is the term that describes the ability of a biomedical instrumentation system to distinguish between desired and competing variables?
What is the term that describes the ability of a biomedical instrumentation system to distinguish between desired and competing variables?
What is the term that describes the consistency in output for a constant input in a biomedical instrumentation system?
What is the term that describes the consistency in output for a constant input in a biomedical instrumentation system?
What is the primary function of the sensor in a biomedical instrumentation system?
What is the primary function of the sensor in a biomedical instrumentation system?
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What is the term that describes the difference between the true value and the measured value divided by the true value in a biomedical instrumentation system?
What is the term that describes the difference between the true value and the measured value divided by the true value in a biomedical instrumentation system?
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What is the primary goal of the processor in a biomedical instrumentation system?
What is the primary goal of the processor in a biomedical instrumentation system?
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What is the term that describes the ability of a biomedical instrumentation system to reproduce the same output for the same input?
What is the term that describes the ability of a biomedical instrumentation system to reproduce the same output for the same input?
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What is the primary function of the display or storage component in a biomedical instrumentation system?
What is the primary function of the display or storage component in a biomedical instrumentation system?
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What is the term that describes the smallest increment that can be measured with certainty in a biomedical instrumentation system?
What is the term that describes the smallest increment that can be measured with certainty in a biomedical instrumentation system?
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What is the primary rule of biomedical instrumentation that ensures the system is easy to use and maintain?
What is the primary rule of biomedical instrumentation that ensures the system is easy to use and maintain?
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Study Notes
Laboratory Incubator
- Provides a controlled, contaminant-free environment for safe, reliable work with cell and tissue cultures
- Controls temperature, CO2, and humidity for growth of live organisms
- Common uses: storage and incubation of bacteriological, viral, microbiological, and cellular cultures
Incubator Components
- Outer wall: stainless steel sheets
- Inner wall: aluminum
- Insulated cabinet: enables visualization of the interior
- Control panel: with all switches and indicators to set the desired temperature
- Strong seal: between the door and the cabinet
- Cabinet door: with control panel, thermostat, and air-pump with filters
- HEPA filters: vaporize water to maintain relative humidity inside the chamber
- Electrical part: with CO2 sensor, temperature sensor, humidity sensor, door switch, and control circuit
Preventive Maintenance
- Always wear gloves when handling containers
- Change the water in the humidity pan at least once per week
- Clean the outside of the unit, especially the door handle
- Sterilize inside the incubator often
- Check and calibrate the temperature regularly
- Check all displays & indicator lights working normally
- Check tubing cracks and tight connections
- Replace chamber HEPA Filter
- Ensure water level in water jacket is full
- Check gas or water leaks
- Check operation of all motors, fan, valve, and heaters
BSC Re-certification
- Certification is needed when:
- Certifier should include:
- Test Report
- Installation
- Calibration Date
- Maintenance
- Methods used
- Filter loading
- Date certified
- Changing sample
- Changing rooms
- Certification due date
- Certifiers name, address, and phone number
- Signature
- Certifier should include:
Common Mistakes in Using BSC
- Blocking of air flow
- Placing arms and materials on the grill
- Placing extra high materials
- Unclean room
- Diffuser damage during lifting materials
- Storing cotton materials
Maintenance Tests
- Smoke test
- Leakage test on filters
- Down flow test
- Electrical safety test
Biomedical Instrumentation Systems
- Types: Direct, Indirect, Invasive, Noninvasive, Contact, Remote, Sense, Actuate, Dynamic, Static
- Fundamental Rules:
- Minimum disturbance to physiologic system
- Sensor must be at physiologic variable value
- Processing should be perfect
- Maintain simplicity
Important Instrumentation Terms
- Sensitivity: change in output as a function of a change in input
- Stability: consistency in output for a constant input
- Specificity: ability to distinguish desired variable from other competing variables
- Accuracy: difference between true value and measured value divided by the true value
- Precision: number of distinguishable alternatives from which a given result is selected
- Resolution: smallest increment that can be measured with certainty
- Reproducibility: same output for the same input
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Description
Identify the different parts of a laboratory incubator, including the outer and inner walls, control panel, and thermostat. Learn about the features that ensure a controlled environment, such as the strong seal and air-pump system. Test your knowledge of this essential laboratory equipment.
