2.2 Performance Metrics
2.2.1 Negative Pressure Range
Negative pressure range: -2.5 to -30.0 mmHg.
Negative pressure accuracy: ±1.5 mmHg;
2.2.2 Air extraction flow rate
The maximum gas extraction flow rate should be no less than 3 L/min under normal conditions.
2.2.3 Maximum Negative Pressure Value
The maximum negative pressure value should not be less than -350 mmHg.
2.2.4 Work Noise
Under normal conditions, the working noise should be less than 60 dB.
2.2.5 Battery Life
When powered by a fully charged battery, the continuous operation time should be no less than 24 hours.
2.3 Prompt Function
2.3.1 Leakage Warning
The drainage bottle is installed incorrectly or there is air leakage in the pipeline. This warning appears when continuous operation lasts ≤60 seconds, and the machine emits a “didi” sound.
The alert sound, the screen displays “
Leak! Please check the airtightness of the tubing and dressing.
2.3.2 Blocking Warning
When the drainage machine is full or the intake pipe is blocked, the machine emits a “d滴滴” alert sound, and the screen displays
English:
Pipeline blockage! Please check the drainage bottle and drainage tube.
2.3.3 Low Battery Warning
When the battery voltage falls below 9V±0.2V, the machine emits a “didi” alert sound, and the screen displays “
Battery level is low! Please connect to power supply for charging!
2.4 Treatment Modes
2.4.1 Continuous Treatment Mode
The input for the target negative pressure value can be entered by clicking on the keyboard, and it can be set within the range of (-2.5 to -3.0) mmHg.
Any integer.
2.4.2 The range for setting the negative pressure value in the dynamic treatment mode target therapy is -25 to -300 mmHg, which can be entered by clicking on the keyboard.
The treatment cycle range is from 2 minutes to 120 minutes. It can be entered by clicking on the keyboard, and it refers to the dynamic treatment duration.
Even number.
2.4.3 Intermittent Treatment Mode
The setting range for the target treatment negative pressure value is -25 to -300 mmHg, which can be entered by clicking on the keyboard.
The treatment cycle setting range is 1 minute to 1–20 minutes, which can be entered by clicking on the keyboard.
The range for stopping cycle settings is 1min to 1-20min, which can be entered by clicking on the keyboard.
2.5 Customer Access Control
Use a password to control access and view the query history.
2.6 Drainage Bottle
2.6.1 Sealing Performance
Drainage bottle: The pressure increase within 10 seconds shall be ≤20 mmHg.
2.6.2 Maximum Usable Capacity
The maximum usable capacity is not less than 90% of the nominal capacity.
2.6.3 Overflow Prevention
It should have an overflow prevention function.
2.7 Electrical Safety Requirements
It shall meet the requirements of GB 9706.1-2020.
2.8 Electromagnetic Compatibility
It shall meet the requirements of YY 9 760.102-2021.
