Anesthesia Machine - WATO EX-20 - Mindray
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Dimensions: 1375 mm (H) × 715 mm wide without breathing system / 880 mm with breathing system × 620 mm (D)
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Weight: Under 120 kg (excluding vaporizers and cylinders)
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Top shelf: 30 kg weight limit, 550 × 265 mm
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Work surface: 820 mm (H) × 500 mm (W) × 310 mm (D)
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Storage drawer (internal): 135 × 390 × 315 mm
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Bag arm: 1030 mm height, 320 mm length, ISO 22mm OD/15mm ID connection
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Casters: 125 mm diameter, all four with brakes
Display
- 7.0" color active matrix TFT screen, 800 × 480 resolution, non-adjustable brightness
- Displays all settings/alarms: breath rate, I:E ratio, tidal volume, minute volume, PEEP, MEAN, PEAK, PLAT, O₂ concentration
- Waveforms: P-T, F-T, V-T
Ventilation Modes
- Manual / Spontaneous / Bypass
- Volume Control Ventilation (VCV) with PLV function
- Pressure Mode Ventilation (P-mode)
Ventilation Parameter Ranges
| Parameter |
Range |
| Tidal volume |
40–1500 mL (Volume) / 5–1500 mL (Pressure) |
| Pinsp |
5–60 cmH₂O |
| Plimit |
10–100 cmH₂O |
| Rate |
4–100 bpm |
| I:E |
4:1 to 1:8 |
| Inspiratory pause |
OFF, 5–60% |
| PEEP |
OFF, 4–30 cmH₂O (electronically controlled) |
| Driving pressure |
280–600 kPa |
| Peak gas flow |
120 L/min + Fresh Gas Flow |
Monitoring Parameters
Minute volume (0–100 L/min), tidal volume (0–2500 mL), FiO₂ (18–100%), peak/mean/plateau pressure (-20 to 120 cmH₂O), PEEP (0–70 cmH₂O), sweep speed (12.5 or 6.25 mm/s)
Accuracy
- Volume delivery: ±15 mL (<75 mL) or ±20 mL/±10% (≥75 mL)
- Pressure monitoring: ±3.0 cmH₂O or ±8% of reading
- PEEP monitoring: ±2.0 cmH₂O or ±10% (up to 30 cmH₂O)
Trend Data
24-hour trend charts (5-second resolution) and trend tables (30s–4min resolution) for TVe, Ppeak, MV, Pplat, PEEP, Pmean, Rate, and optional FiO₂
Alarms
Configurable low/high limits for tidal volume, minute volume, inspired O₂, airway pressure; 20-second apnea alarm
Vaporizers
Compatible with Mindray V60 or Penlon Sigma Delta/Alpha vaporizers; supports Desflurane, Halothane, Enflurane, Isoflurane, Sevoflurane; dual-position Selectatec®/Plug-in® mounting with interlock
Electrical & Battery
- Power input: 100–240 Vac, 50/60 Hz
- Built-in Li-ion battery, 11.1 VDC, 4400 mAh (1–2 units)
- Backup time: 90 min (1 battery) / 150 min (2 batteries)
- RJ45 network interface for software upgrades
Pneumatic System
- Gas supply: pipeline 0.28–0.6 MPa, PISS cylinder inputs (max. 2)
- O₂ flush: 25–75 L/min
- Mechanical flowmeters for O₂, Air, N₂O with dual-range flow tubes
- O₂–N₂O link system (mechanical, min. 25% O₂ concentration)
Breathing Circuit
- Volume: 2600 mL (automatic) / 1800 mL (manual)
- CO₂ absorber capacity: ~1500 mL
- Inspiration/expiration resistance: < 6.0 cmH₂O @ 60 L/min
- APL valve range: 1–75 cmH₂O
- Water trap: 6 mL, removable
Scavenging System (AGSS)
Active (high/low flow) or passive disposal, compliant with ISO 80601-2-13; pump rate 25–105 L/min depending on mode
Environmental Operating Range
- Temperature: 10–40°C
- Humidity: 15–95% (non-condensing)
- Pressure: 70–106 kPa
