Synchronous valve device of breathing machine

Abstract

The invention relates to a synchronous valve device of a breathing machine. The device comprises a device shell, a valve cover, an air inlet and an air outlet. The device further comprises a conduit which is connected to the air outlet and used for being connected to the respiratory tract of the patient; an inhalation conduit lumen which is connected to the conduit; an exhalation conduit lumen which is connected to the conduit; an inhalation air source which is connected to the inhalation conduit lumen through the air inlet; and a pressure controller which controls the pressure in the exhalation conduit lumen. The pressure controller is corresponding to the physiological respiratory signal of the patient, and can balance the static cover pressure of the valve cover with the inhalation pressure: the front shell cavity and the rear shell cavity are hermetically connected, and are communicated with each other through the port of the valve cover, and the air outlet at the front end is externally connected to an air delivery pipe. Because the closing pressure of the valve cover is balanced with the inhalation pressure, the valve opening sensitivity is high, and the device can meet the accurate synchronization requirement of the respiratory rhythm of the patient under the weak respiratory state.

Description

technical field [0001] The invention relates to the field of ventilator devices, in particular to a synchronous valve device for a ventilator. Background technique [0002] In current ventilator devices, efforts have been made to minimize the dead space or dead volume introduced in the breathing circuit of a mechanical ventilator. However, the actual tubes of traditional mechanical ventilators (eg endotracheal tubes) and other devices used to manage respiratory assistance to a patient use a lumen design and contribute to no-lumen ventilation. For this reason, CO2 removal cannot be optimized. [0003] Previous attempts to improve CO2 removal from endotracheal tubes included multi-lumen designs designed to introduce gas flow through side lumens to remove CO2 from the main lumen, but this approach did not completely eliminate patient re-breath during inspiration volume. Therefore, the proposed method reduces, but does not optimize CO2 removal and minimize CO2 rebreathing pro...

AI Technical Summary

Problems solved by technology

However, the actual tubes of traditional mechanical ventilators (such as endotracheal tubes) and other devices used to manage respiratory assistance to the patient use a lumen design and contribute to no-lumen ventilation

For this reason CO2 removal cannot be optimized

[0003] Previous attempts to improve CO2 removal from endotracheal tubes included multi-lumen designs designed to introduce gas flow through side lumens to remove CO2 from the main lumen, but this approach did not completely eliminate patient re-breath during inspiration capacity

Therefore, the proposed method reduces, but does not optimize CO2 removal and minimize CO2 reabsorption problem

Furthermore, the problem of dynamic hyperinflation due to constant inspiratory flow has also complicated this approach, and other approaches using catheter lumens with valve function may increase the risk of infarction

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