Negative pressure ambulance

Abstract

The invention discloses a negative pressure ambulance, which comprises an ambulance body, a head cover, an air pipe, and a negative pressure purification system in the ambulance, wherein the head cover is semiclosed, the back part thereof is provided with an air outlet; the air outlet is connected with the negative pressure purification system in the ambulance through the air pipe. The negative pressure ambulance has the advantages that: 1, the air exhausting and air exchanging efficiencies are high, and the movement of people around cannot influence the air exchanging effect and efficiency. Air current which is at the periphery of the head cover and enters the head cover is very obvious and stable, so that the air breathed out from the mouth of a patient cannot diffuse into a medical cabin, and the possibility of cross infection between doctors and patients is controlled; 2, the negative pressure ambulance is simple to manufacture, can be made by reconstructing a conventional general vehicle without adding the tightness of the conventional vehicle, and avoids additional reconstructing difficulties and cost caused by achieving a negative pressure standard in the cabin of the negative pressure ambulance; 3, the comfort level of the patient is improved greatly; and 4, the negative pressure ambulance is convenient to use; and the head cover can be matched with various styles of stretchers, so the adaptability is wide.

Description

technical field [0001] The invention relates to an ambulance, in particular to a special-purpose ambulance with a negative air pressure difference inside and outside the ambulance. Background technique [0002] With the continuous improvement of the level of public health construction, especially in the prevention and treatment of epidemic infectious diseases, more professional, advanced and reliable epidemic infectious diseases have been proposed for the transportation and transfer of medical observers, suspected patients and confirmed patients. sick transport requirements. In order to control the pollution to the environment to the greatest extent, cross-infection of Chinese medicine patients and patients during the transportation and transfer process, and ensure the safety of the environment, the Ministry of Health of my country has proposed a negative pressure ambulance, that is, the ambulance is equipped with a negative pressure purification system, and Relevant industr...

AI Technical Summary

Problems solved by technology

[0003] But the above-mentioned negative pressure ambulance also has the following disadvantages: (1) The space in the ambulance cabin of the negative pressure ambulance generally reaches 6-8m3, which is very large. After the negative pressure purification system is turned on, the relative air pressure can only reach about -30pa, which is relatively large. low efficiency

Although the exhaust outlet of the negative pressure purification system is located on the patient's head, it is difficult to ensure that all the air exhaled by the patient's mouth is drawn into the exhaust outlet of the negative pressure purification system in time.

Especially when the patient sneezes or shakes the head, the air in the ambulance cabin is easily polluted, which may cause cross-infection between doctors and patients, and there will be people walking around in the ambulance cabin, making the air flow in the cabin more unstable and increasing. possibility of infection

(2) The airtightness of the modified ambulance body itself is difficult to reach the ideal state of the cabin negative pressure value stipulated by the national standard and the air in the cabin does not leak out, especially when the vehicle is running at a relatively high speed. According to the measurement results of the actual site, the relative air pressure can reach -200 ~ 800Pa in some places in the cabin, especially near the gaps such as car windows. The outside air can enter these positions, and the polluted air in the cabin also has a considerable probability. A small amount of leakage from these locations into the external environment may cause pollution to the external environment

(3) Affect the use of heating and cooling air conditioners: when using heating and cooling air conditioners, when the air convection is at its maximum, it will largely affect the relative negative pressure and air flow in the ambulance cabin

It divides the ambulance cabin into two cabins, the front functional cabin and the rear medical cabin. Although it can achieve the effect of forming a room, it does not solve the aforementioned several major problems in the existing ambulance cabin, so it has not yet overcome the existing problems. problems, and the structure is complex and the efficiency is low

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