The Role of Compressed Air in the Ward

Official note on the role of compressed air in wards

as an important infrastructure of modern medical system, compressed air plays multiple key functions in the ward environment, which is directly related to the safety of patients and the quality of medical care. After comprehensive technical analysis and industry practice, its core role is explained as follows:

1. life support system power support

1. respiratory Therapy Device Driver
   • as the core power source of ventilator and high frequency oscillatory ventilation device, it provides precise respiratory support for critically ill patients. The 0-100% oxygen concentration mixture is delivered through the pressure regulating valve to meet the respiratory support needs of the whole age from newborns to adults.
   • The aerosol inhalation device is driven to convert the therapeutic drug into aerosol particles with a diameter of 1-5 μm, ensuring the effective deposition rate of the drug in the lungs (usually up to 40-60%).
2. Intensive care equipment supporting
   • provide continuous and stable air source pressure (usually set in the range of 0.4-0.6MPa) for hemodialysis machines, extracorporeal membrane oxygenation (ECMO) and other equipment, and ensure that the continuous operation time of the equipment can reach more than 72 hours.
   • The pneumatic lifting system that drives the intelligent hospital bed realizes the stepless adjustment of 0-75 ° back lifting angle to meet the needs of different treatment positions.

2. medical operation assistance support

1. construction of aseptic diagnosis and treatment environment
   • the pneumatic clean door system maintains the positive pressure environment of the operating room and isolation ward (the pressure difference is maintained at 5-10Pa), effectively blocking the invasion of external polluted air.
   • Drive the laminar flow purification device to make the air cleanliness of the ward reach the ISO 5 level standard (≥ 0.5μm particle concentration ≤ 3520 particles/m & sup3;) to reduce the risk of postoperative infection.
2. Precision diagnosis and treatment equipment control
   • provide pneumatic drive for the endoscope system, realize the 0-180 ° bending control of the lens, and improve the visual field coverage of the digestive tract, respiratory tract and other intracavitary examinations.
   • Drive the air-cooled system of the laser treatment equipment to ensure that the working temperature of the optical components is stable at 25±2°C to ensure the accuracy of the treatment.

3. environmental security system

1. emergency Treatment of Gas Leakage
   • the matching gas leakage alarm system can start the sound and light alarm and automatically close the main air supply valve within 30 seconds when the compressed air leakage is detected (leakage ≥ 0.5m & sup3;/h).
   • Drive the emergency exhaust device, in the detection of harmful gas leakage, can achieve 30 times/hour of ventilation, rapid dilution of pollutant concentration.
2. fire safety linkage control
   • in linkage with the automatic fire alarm system, the non-fire gas is automatically cut off when a fire occurs, and the positive pressure air supply system is activated at the same time to maintain the safety pressure of the evacuation passage.

4. special treatment scenario application

1. hyperbaric oxygen therapy support
   • premixed gas (oxygen concentration 23.5±1.5%) is provided for the hyperbaric oxygen chamber, and the stepless adjustment of 0-0.3MPa pressure is realized through the three-stage decompression device to meet the needs of different treatment programs.
2. Physical factor therapy drive
   • drive the extracorporeal shock wave therapeutic instrument to generate 0.1-0.5MPa pressure pulse, which is used for fracture healing promotion, soft tissue repair and other treatment scenarios.

Requirements of 5. Quality Assurance System

1. air Quality Standards
   • oil content: ≤ 0.01 mg/m & sup3;(Adopt coalescing filter + activated carbon adsorption double treatment)
   • particulate matter: ≤ 0.1μm particle size particle concentration ≤ 1000 particles/m & sup3;(equipped with HEPA filter)
   • microorganisms: total bacterial colony ≤ 10CFU/m & sup3;(by ultraviolet sterilization + membrane filtration technology)
2. system reliability design
   • adopt dual-machine hot backup architecture, automatic switching time of main and standby units ≤ 30 seconds
   • the capacity of the gas storage tank shall be configured according to 30% of the maximum gas consumption, and the emergency gas supply time shall be ≥ 15 minutes.
   • Equipped with online monitoring system, real-time display pressure, flow, dew point temperature and other 12 key parameters

as the "invisible lifeline" of the ward, the stable operation of the compressed air system is directly related to the medical safety and treatment effect. Medical institutions should establish a complete equipment management system, including a three-level maintenance system of daily inspection, monthly comprehensive inspection, and annual in-depth maintenance, and conduct regular emergency drills to ensure that the system is always in the best working condition. With the advancement of medical technology, the compressed air system is deeply integrated with the Internet of Things technology to achieve advanced functions such as intelligent pressure adjustment, energy consumption optimization management, and predictive maintenance, providing basic support for the construction of smart wards.