PC 1771 Control
PC 1772 Monitoring
PC 1775 Plug’n’Play
AC/DC Converter
© MAQUET
09-03-25
Patient unit flexibility
Expiratory Valve Coil PC 1781 Exp. pressure transducer PC 1778 DC/DC & Standard connectors
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成 Gas flow through the Patient unit – inspiratory flow
1. O2气体入口
2. 空气气体入口
3. 气体模块
4. 吸气混合部分
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09-03-25
5. O2 cell with bacteria filter incl. temp. sensor
SM 3-6
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09-03-25
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Functional block diagram
SM 9-3
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09-03-25
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电路及软件结构 PATIENT UNIT - internal layout
PC 1781 Insp. Pressure transducer
PC 1784 Exp. channel
© MAQUET
09-03-25
1. Handle 2. Gas inlet Air 3. Gas inlet O2 4. Equipotentiality terminal 5. Mains supply connector incl. 2.5 A fuses 6. Internal fan with filter 7. Connector for external 12 V DC 8. Fuse for external DC supply (10 A) 9. Optional connector 10. Connection to the User interface 11. 9-pole serial port for data communication (RS232) 12. Expiratory outlet (expiratory cassette)
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▪呼吸机工作原理及硬件构成
EXPIRATORY flow transducer
T2 - T1 = Tdiff
Tdiff is proportional to the gas flow New measurement every 4 ms
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成 Expiratory section – Exp. cassette
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▪基础使用介绍 Set up – Servo-i test tube
MAINTAINING BEDSIDE-QUALITY VENTILATION DURING TRANSPORT
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09-03-25
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▪常见附件介绍
BENEFITS PROVIDED BY THE UNIQUE DESIGN ▪ Promotes patient safety by minimizing the risk of
5. Nozzle unit with valve diaphragm 6. Inspiratory solenoid
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▪呼吸机工作原理及硬件构成
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成 BASIC PRINCIPLES – Safety valve
Opening conditions: • Servo-i switched Off or in Standby • 117 ± 7 cmH20 • 5 cmH20 above Upper Pressure Limit
▪ After any installation, maintenance or service action on the Servo-i Ventilator System
© MAQUET
09-03-25
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▪基础使用介绍 Start a Pre-use check
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09-03-25
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▪呼吸机工作原理及硬件构成 Mini Compressor
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09-03-25
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▪呼吸机工作原理及硬件构成
Principle
Inlet
Air filter Compressor
Cooling coil
Thermoelectric cooler
Compressed Air Inlet
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基础使用介绍
© MAQUET
09-03-25
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▪基础使用介绍
Start a Pre-use check
▪ A Pre-use check must always be done before connecting the ventilator to a patient
▪ When the expiratory cassette has been replaced, a pre-use check is recommended
© MAQUET
09-03-25
Water separator
Tank
Outlet
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常见附件介绍
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09-03-25
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▪常见附件介绍
ATTACHMENT FOR OPTIONAL ACCESSORIES
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09-03-25
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▪常见附件介绍
PLUG-IN MODULES
呼吸机基本机构介绍
CONTENT LIST
Overview of content: ▪ 呼吸机工作原理及硬件构成 ▪ 常见附件介绍 ▪ 关于各类流量传感器的简要介绍 ▪ SERVO呼吸机的基础使用介绍 ▪ SERVO呼吸机的日常维护与保养 ▪ 实际操作与问题讨论
© MAQUET
09-成
33°C, 1/2 speed ; 43°C, Full speed
6. Bacteria filter for the inspiratory pressure transducer
7. Inspiratory outlet pipe incl. safety valve
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▪呼吸机工作原理及硬件构成
(technical use) 9. On/Off switch main
power 10. Locking arm to tilt
screen
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▪呼吸机工作原理及硬件构成 PATIENT UNIT
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成
PATIENT UNIT – Exterior overview
▪ 压差式：通过气体流经节流装置时所产生的压差来测量流量。 特点：结构简单，使用寿命长，适应性广，缺点是有压力损失
▪ 超声式：通过超声波在气体介质中顺流、逆流方向上传播的时间和时 间差来算出沿气 道和轴线构成的平面上的轴平均速度。 特点：非接触式，抗干扰性强；精度高；灵敏度高
© MAQUET
09-03-25
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成 EXPIRATORY SECTION – Expiratory cassette
9
8
10
11
12
© MAQUET
8. Expiratory inlet 9. Ultrasonic transducers with connection board 10. Bacteria filter for the expiratory pressure transducer 11. Expiratory valve 12. Expiratory outlet with non-return valve
sudden increases in expiratory resistance, which is a known problem when using filters during nebulization
© MAQUET
09-03-25
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▪关于各类流量传感器的简要介绍
▪ 热丝式：通过气体流过时热丝的温度变化量转换为流量进行检测。 特点： 反应灵敏，精度高，但是抗干扰性差
© MAQUET
09-03-25
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▪呼吸机工作原理及硬件构成 GAS MODULE
© MAQUET
09-03-25
1. Filter 2. Inspiratory valve temp sensor 3. Supply pressure transducer 4. Flow transducer
(Delta pressure transducer and net)
PATIENT UNIT - disassembly
Inspiratory pressure transducer tube Inspiratory pipe
Air and O2 gas modules
Temperature sensor
© MAQUET
09-03-25
Safety valve
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▪呼吸机工作原理及硬件构成
rear side) 19. Additional settings 20. Patient category