Air and oxygen mixing channel structure of breathing machine

Abstract

An air and oxygen mixing channel structure of a breathing machine comprises a first pipeline, a second pipeline and a connecting piece, one end of the connecting piece forms an inserting hole end, the other end of the connecting piece forms a disc-shaped end, and a conical pipe is arranged at the disc-shaped end. And an annular cavity, a premixing cavity and a Venturi tube section are formed on the pipeline II. And a port at one end of the pipeline I extends into the premixing cavity. And the annular cavity is matched with the jack end. A cavity is formed in the disc-shaped end, and a first U-shaped partition plate, a pair of second S-shaped partition plates and a pair of third S-shaped partition plates are arranged on the inner bottom face of the cavity. The opening end of the first partition plate faces the Venturi tube section, and the third partition plate is close to the opening end of the first partition plate relative to the second partition plate. The second partition plates are distributed on the two sides of the closed end of the first partition plate, and the third partition plates are distributed on the side wall of the cavity. The mixing uniformity condition of air and oxygen in the breathing machine can be improved, the mixing stroke is shortened, the size of the part is reduced, and the conveying energy consumption of the air and the oxygen in the mixing process is reduced.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an air-oxygen mixing channel structure used in a ventilator for mixing air and oxygen. Background technique [0002] As a clinically used tool with the function of replacing spontaneous ventilation, the ventilator has been widely used in clinical applications. It can play a role in the scenarios of respiratory failure caused by various reasons, intraoperative anesthesia and respiratory management, respiratory support treatment and emergency resuscitation. Therapeutic effects of preventing, assisting respiration and treating respiratory failure and reducing complications. In the operating principle of the ventilator, air and oxygen need to be mixed in a certain proportion and then delivered to the patient. In the past, most of the methods of mixing air and oxygen in the ventilator are passive mixing, which mainly relies on free diffusion between gases to complete the mixing, and...

AI Technical Summary

Problems solved by technology

In the past, the mixing method of air and oxygen in ventilators was mostly passive mixing, which mainly relied on the free diffusion between gases to complete the mixing, and the mixing uniformity was relatively poor. In order to ensure that the mixing uniformity meets the requirements, it is necessary to set the mixing stroke to If it is set long enough, it will inevitably increase the volume of the machine, and the energy consumption of the delivery pressure will be relatively high.

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