Trachea cannula

Abstract

The invention discloses a trachea cannula. The trachea cannula comprises a cannula body and an air bag attached to the cannula body. The air bag is hollow, and the cannula body penetrates through the air bag. The outer surface of the air bag is provided with a protruding ring perpendicular to the cannula body. According to the trachea cannula, by means of the close embedding of the protruding ring of the air bag and a trachea cartilaginous ring, the problem that a traditional sliding-surface air bag cannot be attached to the inner wall of the trachea completely is solved thoroughly, the number of bacteria and the amount of sputum or gastroesophageal reflux food entering the lung cavity are reduced, and the probability of VAP is reduced.

Description

technical field [0001] The invention relates to a medical device, in particular to an artificial airway. Background technique [0002] The air bag is a physical structure attached to the outer wall of the front end of the endotracheal tube, and is directly connected to the body of the endotracheal tube. The main function is to close the space between the catheter and the tracheal wall after the balloon is inflated, to prevent air leakage during positive pressure ventilation and to avoid reflux and aspiration of upper respiratory tract secretions or gastric contents. At the same time, the endotracheal tube can also be fixed. However, when the pressure of the airbag on the inner wall of the airway due to excessive inflation is large enough (≥30mmHg), the blood flow of the tracheal mucosa is blocked, resulting in a series of complications that cause harm to the patient, such as tracheomalacia, tracheoesophageal fistula, tracheal Mucosa hyperemia and necrosis, etc. Secondly, ...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a tracheal intubation tube, through the design of the convex ring on the surface of the balloon, the surface of the concave-convex ring alternates with the convex-concave surface formed by the mold part between the cartilage ring and the cartilage ring on the inner surface of the trachea to form a tight fit like a gear. It completely solves the problem of incomplete fit between the traditional sliding surface airbag and the inner wall of the trachea, thereby reducing the amount of bacteria, sputum or gastroesophageal reflux entering the lung cavity and reducing the chance of VAP

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