What is the concept of a negative pressure ambulance?
2 Answers
Negative pressure ambulance uses technical means to make the air pressure inside the vehicle lower than the external atmospheric pressure, ensuring that air flows naturally from outside to inside the vehicle. After harmless treatment, the air can also be discharged from the vehicle to avoid infecting more people. The following is a related introduction to negative pressure ambulances: 1. Main features: The most significant characteristic of this vehicle is negative pressure. The so-called negative pressure means using technical methods to make the air pressure inside the vehicle lower than the external atmospheric pressure, so that air can only flow from outside to inside when moving freely. Moreover, the negative pressure can discharge the air inside the vehicle after harmless treatment, preventing more people from being infected. This minimizes the chance of cross-infection among medical staff when treating and transporting patients with infectious diseases or other special conditions. 2. Purification principle: The so-called negative pressure is achieved through a self-developed negative pressure exhaust purification device, which makes the air pressure inside the vehicle lower than outside, allowing air to flow only from outside to inside. With the help of a fresh air system, fresh air is introduced, while filtration equipment is used to treat the air inside the vehicle harmlessly, minimizing cross-infection between medical staff and patients.
A negative pressure ambulance is a specially designed ambulance equipped with an internal negative pressure system that maintains lower air pressure inside the compartment compared to the outside. This prevents air from escaping freely; instead, it is filtered through high-efficiency filters before being discharged. Having studied automotive design for years, I find this concept brilliant—it primarily prevents pathogens from leaking outside during the transport of contagious patients, safeguarding medical staff and the general public. The system consists of a fan, a sealed compartment, and filters. The fan extracts air to create negative pressure, while the filters trap microscopic particles, ensuring contaminants do not spread. In terms of vehicle maintenance, this design requires regular filter inspections and replacements to prevent clogging and maintain efficiency. Operators of such vehicles report their critical role during pandemics, such as COVID-19, enabling safe patient transport and reducing community transmission risks. Overall, this innovation transforms ambulances from mere transport vehicles into mobile isolation units, elevating public health standards.
