The so-called
Negative Pressure Ambulance, also known as the "movable large-sized N95 mask" that protects life, its biggest difference from ordinary ambulances is that it can achieve "negative pressure isolation". By utilizing technological means, the air pressure inside the vehicle is lowered below the external atmospheric pressure. When air flows freely, it can only flow from outside to inside the car, and negative pressure technology can also harmless treat the air inside the car and discharge it, preventing the spread of the epidemic and achieving safe isolation and transportation of patients. It can minimize cross infection between medical staff and patients, as well as pollution to the external environment. After the negative pressure device is activated inside the car, the direction of air flow inside the car can be controlled to form a directional flow of air in the medical cabin. The medical cabin forms a relative atmospheric low pressure difference with the external environment (relative pressure between -30pa and -20pa). The air exhaled by the patient is sucked into the device through the inhalation terminal, disinfected, and then discharged outside the car to prevent contamination from spreading, while ensuring that gases carrying infectious viruses do not circulate inside the car and avoiding secondary pollution.
Not only that, negative pressure ambulances also play a "triple protection" role. The first level of protection comes from the negative pressure
Ambulance medical cabin mentioned earlier, which is itself a large negative pressure cabin. While ensuring a certain amount of fresh air input, the air inside the cabin is filtered and disinfected before being discharged from the vehicle, ensuring that the external environment is not polluted. The second level of protection is the negative pressure stretcher cabin, which forms a fixed air flow field. The air always flows from the clean area (medical personnel area) to the infection source area (patient area), and is then discharged after harmless treatment, minimizing the probability of cross infection between doctors and patients in the cabin. The third level of protection is personal protective equipment for medical staff, drivers, and stretchers. The "triple protection" not only provides safety protection for patients, medical staff, drivers, and stretchers, but also effectively prevents the further spread of the disease.
In addition to the key negative pressure isolation cabin, the negative pressure ambulance is also equipped with a biosafety negative pressure isolation stretcher, a complete set of rescue equipment such as respirators, defibrillators, and electrocardiogram monitors. It is equipped with ultraviolet disinfection lamps, central oxygen supply interfaces, etc., fully ensuring every link in the front line of epidemic prevention. The layout of the medical cabin follows the European emergency principles and combines with the actual emergency situation in China. It adheres to a patient-centered "one arm" emergency design, with commonly used consumables and medical equipment within one arm range, making it convenient for medical staff to access and operate, and improving the speed of rescuing patients.
In addition, the materials used in negative pressure ambulances are different from ordinary cars. The interior of the medical cabin is made of self sterilizing composite materials, which have the characteristics of high strength, high toughness, and no volatilization; The soft bag material is made of antibacterial PU, which is easy to clean and disinfectable; The interior connection adopts nanostructured adhesive, which has the characteristics of high strength and non volatility.
