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Mindray SV300 600 650 800 850 Ventilator Machine Blower box Turbine Box assembly PN 115-028051-00
► Brief Introduction
The pneumatic circuit system includes four parts, namely the inspiratory limb, patient tubing, expiratory limb and backup air supply module. The inspiratory limb system can be disassembled into the gas supply subsystem, flow control subsystem, safety valve subsystem and nebulization control subsystem.
As shown above, patient tubing is the bridge connecting the inspiratory limb and the expiratory limb. Meanwhile, the gas supply and the nebulization subsystems also can be connected to the patient tubing to perform the nebulization function. These systems together constitute a closed circuit to conduct ventilation management functions.
The gas supply subsystem is the first part of the pneumatic circuit, and its main function is to draw the external air and oxygen supplys into the machine. As the pressure of the external gas supply is relatively high and unstable, with certain impurities, a 5 um filter has been provided in the air supply subsystem. As the pressure of the external oxygen supply is relatively high and unstable, a pressure regulation valve has been provided in the air supply subsystem to protect the precision solenoid valve and flow sensor in the flow control module at the back-end. Meanwhile, a pressure sensor has been provided to monitor the air supply pressure, as well as a check valve to prevent the reflux of the gas inside the ventilator to other external air supply.
The gas supply inlet connector is designed as NIST/DISS optional type to prevent incorrect connection. The pressure regulation valve at the back-end of the gas supply inlet reduces the gas supply pressure to ensure the output of the proportional solenoid valve PSOL is stable and maintains relatively good reproducibility.
► Control Accurac
| O2 % | ± (3 vol.% +1 % of setting) |
| TV | ± (10 mL + 10 % of setting) (BT |
| Tinsp | ± 0.1 s or ± 10 % of setting, whichever is greater |
| I: E | 2: 1 to 1: 4: ± 10 % of setting, other range: ± 15% of setting |
| f | ± 1 bpm |
| fSIMV | ± 1 bpm |
| Tslope | ± (0.2 s + 20 % of setting) |
| PEEP | ± (2.0 + 5 % of setting) cmH2O |
| ∆Pinsp | ± (2.0 + 5 % of setting) cmH2O |
| ∆Psupp | ± (2.0 + 5 % of setting) cmH2O |
| Phigh | ± (2.0 + 5 % of setting) cmH2O |
| Plow | ± (2.0 + 5 % of setting) cmH2O |
| Thigh | ± 0.2 s or ± 10 % of setting, whichever is greater |
| Tlow | ± 0.2 s or ± 10 % of setting, whichever is greater |
| Pressure Trigger | ± (1.0 + 10 % of setting) cmH2O |
| Flow Trigger | ± (1.0 L/min + 10 % of setting) |
| int.PEEP ∆ | ± (2.0 + 5% of setting) cmH2O |
| Exp % | ± 10 % |
| fapnea | ± 1 bpm |
| Papnea ∆ | ± (2.0 + 5 % of setting) cmH2O |
| TVapnea | ± (10 mL + 10 % of setting) (BTPS) |
| Apnea Tinsp | ± 0.1 s or ± 10% of setting, whichever is greater |
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