Which treatment equipment in hospital wards requires compressed air

In the medical field, compressed air, as a key power source and medium, is widely used in ward treatment equipment, and its core value is to provide stable and clean air support. The following is a professional exposition from three aspects: equipment category, function principle and technical requirements:

1. core treatment equipment and compressed air application

1. respiratory support system
   • device Type including invasive ventilator, non-invasive ventilator and high flow oxygen therapy instrument.
   • Principle of action compressed air is used as a power source to drive the ventilator gas circuit system and mix with oxygen to form a breathing gas of appropriate concentration. For respiratory support equipment for premature infants, compressed air also needs to adjust the proportion of oxygen to simulate the natural breathing environment.
   • Technical Requirements: To meet the demand for continuous air supply, the pressure stability should be controlled within the range of ± 5% to ensure that the respiratory rhythm of the patient is not disturbed.
2. Atomization therapy equipment
   • device Type: Medical nebulizer, aerosol generating device.
   • Principle of action the use of compressed air liquid atomization into tiny particles (1-5μm), through breathing inhalation directly to the lungs, for asthma, chronic obstructive pulmonary disease and other respiratory diseases treatment.
   • Technical Requirements: A precision pressure regulating valve is required to ensure the uniformity of atomized particles and avoid the waste of liquid medicine or the decrease of treatment efficiency caused by air pressure fluctuation.
3. Pneumatic drive equipment
   • device Type pneumatic massager, pneumatic bed, negative pressure suction device.
   • Principle of action: Compressed air drives the piston or cylinder to move to achieve equipment functions. For example, pneumatic massagers promote blood circulation through periodic air pressure changes.
   • Technical Requirements: It needs to have fast response ability, and the air pressure adjustment accuracy needs to reach 0.02MPa to meet the needs of different treatment modes.

Technical requirements for 2. compressed air system

1. cleanliness guarantee
   • multistage filtration system: Compressed air needs to be filtered through five stages such as pre-filter, activated carbon filter and bacterial filter to ensure that the output air particle size is less than 0.01 μm and the microbial content is less than 1CFU/m & sup3;.
   • water removal treatment: Adopt an adsorption dryer to reduce the pressure dew point to -40°C to avoid the risk of failure or cross-infection caused by liquid water entering the equipment.
2. Gas supply continuity design
   • redundant configuration the system adopts "N +1" redundant design, I .e. the main equipment and standby equipment are switched in real time to ensure that the gas supply is not interrupted when a single equipment fails.
   • Gas tank capacity: The volume of the gas storage tank shall meet the 30-minute gas consumption reserve of the ward to cope with the sudden gas consumption peak.
3. safety monitoring system
   • pressure monitoring: The terminal is equipped with a pressure sensor at the air point to monitor the air pressure fluctuation in real time, and the over-limit alarm threshold is set to ± 20%.
   • Quality monitoring regularly detect the content of harmful gases such as carbon monoxide and sulfur dioxide in compressed air to ensure compliance with the European Pharmacopoeia standards.

3. typical application scenarios

1. intensive Care Unit (ICU)
   • powered invasive ventilators to support prolonged mechanical ventilation of patients.
   • Drive pneumatic bed to achieve position adjustment, prevention of pressure ulcer complications.
2. general ward
   • gas supply for atomization therapy equipment to achieve accurate drug delivery.
   • Cooperate with negative pressure suction device to deal with respiratory secretions of patients.
3. Special Treatment Unit
   • in hyperbaric oxygen chamber therapy, compressed air is used to adjust the pressure in the chamber to assist pure oxygen inhalation therapy.

Conclusion

compressed air system has become the core infrastructure of hospital ward treatment equipment by providing clean and stable air source. Its technological evolution direction focuses on energy efficiency improvement, intelligent monitoring and infection control, such as the use of permanent magnet frequency conversion technology to reduce energy consumption, the deployment of Internet of Things systems to achieve remote operation and maintenance. With the improvement of medical quality requirements, the compressed air system will continue to develop in the direction of "oil-free, sterile, and low energy consumption", providing more reliable support for ward treatment equipment.