Sealed air bag automatic pressure regulating ventilation catheter and connecting device

Abstract

The invention discloses a sealed air bag automatic pressure regulating ventilation catheter and a connecting device, and belongs to the field of medical instruments, the sealed air bag automatic pressure regulating ventilation catheter comprises a ventilation catheter body with the front section provided with a sealed air bag, a bias pressure balance regulator is communicated with the sealed air bag, and a communicating pipe is communicated with the bias pressure balance regulator and is communicated with a breathing loop; during mechanical ventilation, the pressure intensity of gas in a breathing loop is automatically adjusted through a bias pressure balance adjuster, so that the pressure intensity of the gas in the sealing air bag is larger than that of the gas in the breathing loop, and the pressure intensity difference value is smaller than 10 mmHg; the pressure intensity of the sealing air bag of the ventilation catheter synchronously and periodically changes along with the pressure intensity of the mechanical ventilation airway, in the expiration phase with the small pressure intensity of the mechanical ventilation airway, the pressure intensity of air in the sealing air bag is small, tracheal mucosa blood circulation is periodically recovered, and tracheal mucosa damage caused by the tracheal mucosa blood circulation is avoided.

Description

technical field [0001] The present invention mainly relates to the field of medical treatment, in particular to the field of medical catheters. Background technique [0002] General anesthesia or ICU patients need to place a tracheal tube into the trachea through the mouth or nose, and then be assisted by an anesthesia machine or ventilator for breathing. During mechanical ventilation, the head of the endotracheal tube inserted into the trachea is provided with a sealed capsule. In order to ensure the airtightness of the ventilation, an appropriate amount of gas is filled into the sealed capsule. The gas pressure is higher than the airway pressure during mechanical ventilation. Under the pressure of the sealed capsule on the tracheal mucosa, the blood circulation of the tracheal mucosa is blocked, the blood supply is reduced, or even there is no blood supply. [0003] When the sealing capsule compresses the tracheal mucosa for a short period of time, the sealing balloon is ...

AI Technical Summary

Problems solved by technology

This method also requires more manual intervention, which is time-consuming and labor-intensive.

Improper operation: if the air pressure is too high, the interval between alternate inflation is too long, the operation is forgotten, etc., it may even cause ischemia and necrosis at the compression site of the two sealed air bags, resulting in double the risk of complications

Even if the management is fully in place, in some patients with poor tolerance, the 30mmHg pressure will still seriously affect the blood circulation of the tracheal mucosa, and will still lead to ischemic necrosis

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