Respiratory group and pressure release valve

Abstract

The invention relates to a respiratory group and a pressure release valve. The pressure release valve comprises an airtight body and an air leakage body; the airtight body comprises a housing, a pressure control valve arranged on the housing, a pressure gage and a flexible part which caps the opening of the housing; the housing and the flexible part define out an airtight space; the pressure control valve and the pressure gage are respectively used for regulating and measuring gas pressure in the airtight space; the air leakage body is provided with an inner surrounding wall which can be separately abutted with the flexible part; the inner surrounding wall and the flexible part jointly define out a wall inner space and a wall outer space which are respectively located inside and outside the inner surrounding wall; the flexible part perpetually receives the gas pressure in the airtight space to be pushed outwards; when an external force which acts on the flexible part and is opposite to the gas pressure is less than the gas pressure, the flexible part is abutted with the inner surrounding wall, and the wall inner space and the wall outer space are not communicated; and when the external force is bigger, the flexible part can be separated from the inner surrounding wall to make the wall inner space and the wall outer space communicated so as to achieve the goal that the respiratory group and the pressure release valve receive the smaller gravity effect and can be randomly put into various angles.

Description

technical field [0001] The invention relates to a pressure relief valve, in particular to a pressure relief valve used in medical breathing sets to control gas pressure. Background technique [0002] In order to avoid the damage caused by over-expansion of the lungs or repeated expansion and collapse of the alveoli when the patients with damaged lungs are using a respirator, the airway pressure at the end of expiration is used to keep the airway at a positive pressure ( Positive end-expiratory pressure, positive end expiratory pressure, referred to as PEEP), allows the alveoli in the lungs to be stretched and fixed to increase the alveolar volume, which can increase the contact area between the alveoli and microvessels to increase the efficiency of diffusion and oxygenation. Simultaneously, the follow-up injury of the patient when using the respirator is also avoided. [0003] refer to figure 1 , in the past, in order to keep the gas delivery tube 91 in a certain pressure ...

AI Technical Summary

Problems solved by technology

[0006] This shows that the above-mentioned existing pressure relief valve obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to seek a solution, but for a long time no suitable design has been developed, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

Images