This PPT includes, basics of ventilator and all the required details about Installation,servicing and maintenance of a Anaesthesia Ventilator.

1. Anaesthesia Ventilator
• Dattaraj Sansgiri
(10-548)
• Raghav . Narasimhan
(11-501)

2. Anesthesia
Machine
• It provides an accurate and continuous
supply of medical gases (such
as oxygen and nitrous oxide), mixed
with an accurate concentration of
anaesthetic vapour (such
as isoflurane), and deliver this to the
patient at a safe pressure and flow.
• Modern machines incorporate a
ventilator, suction unit, and patient
monitoring devices.

3. Basic
Working
Principle

4. Detailed
Block
Diagram

5. Fail Safe
Ohmeda Fail Safe System

6. Draeger Fail Safe System

7. Flowmeter

8. Vaporizers

9. Scavenger Interface
1) A gas collecting assembly,
2) A transfer means,
3) A scavenging interface,
4) A gas disposal assembly tubing
5) An active or passive gas disposal
assembly.

10.  Ambulances
 Operation Theaters
Major OT + Minor OT
 Private ICU’s
 ICCU’s
 General Wards
 Rarely used in Surgeries.

18. Front Panel
1. Auxiliary common gas outlet (ACGO)
switch
2. ACGO
3. Inspiratory check valve
4. Inspiratory flow sensor
5. Canister (carbon dioxide absorbent)
6. Canister release
7. Expiratory flow sensor or flow port
adapter
8. Leak test plug
9. Expiratory check valve
10. Breathing system release
11. Manual bag port
12. APL (adjustable pressure-limiting)
valve
13. Bag/Vent switch
14. Bellows assembly
15. Pressure gauge (airway)
16. Sample gas return port

19. Front
Panel
1. ABS (Advanced Breathing System
2. Flow controls
3. Control Module (Ventilator Display
4. Dovetail rails
5. Vaporizer
6. System switch
7. Pipeline pressure gauge(s) (upper
row)
8. Cylinder pressure gauge(s) (lower
row)
9. OFlush
10. Auxiliary Oflowmeter
11. Suction regulator

20. Back
Panel
1. Circuit Breaker for
Electrical Outlets
2. Electrical Outlets
3. Pipeline
Connection(s)
4. Cylinder Supplies
5. System Circuit
Breaker
6. Mains Inlet
7. Equipotential Stud

22. Rear Panel

23.  Physical Specifications
 Power Specifications
 Power cord Specifications
 Electric Power
 Pneumatic Specifications
 Breathing System Specifications
 Gas supplies Specifications
 Gas Scavenging System Specifications

24. Physical Specifications

25. Power Specifications

26. Pneumatic Specifications

32. Accessories

39.  Hypersensitivity
 Asthama
 Low/High Blood Pressure
 Allergic towards Aneasthetic Drugs
 Pacemaker / Implanted Defibrillator

40. Proper Grounding.
An operator of the medical electrical system must not touch nonmedical
electrical equipment and the patient simultaneously. This may cause an unsafe electrical
shock to the patient.
Use of portable phones or other radio frequency (RF) emitting equipment near
the system may cause unexpected or adverse operation.
Use of other electrical equipment on or near this system may cause
interference.
Verify normal operation of equipment in your configuration before use on
patients.

41. Installation Steps
When the system is installed, the Datex-Ohmeda
representative will check the default settings and change them
if necessary.
These settings can only be changed by qualified
personnel.
• Language.
• Automatic calculation of VE alarm limits during mechanical
ventilation.
• Altitude.
• Ventilator drive gas.
• User Select Defaults.

43. Daily Maintenance
Clean dust from the unit with a dry cloth.
Remove any type of foreign body from the equipment.
Check whether there is any damage to the electrical cables.
Switch on the supply and check all indicators function.

44. Weekly Maintenance
Unplug
clean outside /wheels area with damp cloth, dry off.
Use normal surface disinfectants
(Aldehydes, alcohol, ammonia compounds based)
Check the internal circuitry.
Dusting is Must !!!

45. Half Yearly Maintenance
Technician checks required.

47. Basic check by technician.
Service engineer.
(Service manual available)
Service from Manufacturer.
(copy of sales receipt and other proof of purchase)

48. If an alarm occurs, safeguard the patient first, before
troubleshooting or repair procedures.

49. Power cord bent or ruptured. Change the power cord.
Turn on the power switch. Power indicator
doesn’t glow.
-Check the power supply.
-Check the internal power supply board.
a)Time and intensity display boards are not
lit after turning on the supply .
b) Time and intensity boards show other
value than zero
-Check and if required replace the displays
and also their related boards.
-Recalibrate it back to zero by reset or
turning the knob in anticlockwise manner.
Troubleshooting

50. Knob turning doesn’t change intensity or
Timing doesn’t change or
Unit shows little
Replace the input board and the
motherboard.
Alarm doesn’t sound after improper
attachment of arms to the unit
Replace the buzzer.
Gas sensors and filters faulty Contact a qualified service represtative and
replace the parts.
Movement of the assembly unit Replace the loose mechanical screws with
their tight fittings.

52. Anaesthesia Ventilators
• Dattaraj Sansgiri
(10-548)
• Raghav . Narasimhan
(11-501)