Double-lumen bronchial catheter

Abstract

The invention relates to a double-lumen bronchial catheter. The double-lumen bronchial catheter aims at overcoming the defects that the outer diameter of a main tube of the double-lumen bronchial catheter is large, intubation difficulty and related intubation injuries are increased, and use of patients with small tracheal glottis or small physique such as children is limited; the inner diameter of a single-lumen tube in the double-lumen bronchial catheter is small, operation of a fiber bronchoscope and a sputum suction tube is not facilitated, and mechanical ventilation resistance is large; and the single-lumen tracheal catheter needs to be replaced for mechanical ventilation after the operation is finished. The other end of a main tube is connected with a connecting tube through a main tube connector; and one end of an auxiliary tube is opened at the midpoint of the c end of a main cuff and the b end of an auxiliary cuff, the other end of the auxiliary tube is connected with an auxiliary tube extension tube, and the other end of the auxiliary tube extension tube is connected with an auxiliary tube extension tube suction connector, a sealing cap, an auxiliary tube extension tube standard ventilation connector and a sealing cap. The catheter can meet the functions of a double-lumen bronchial catheter used at present, including mutual isolation of double lungs, good ventilation of healthy side lungs and rapid collapse of operative side lungs, and ventilation of the healthy side lungs or ventilation of the double lungs and separate suction of the double lungs according to needs; and the catheter has the advantages of large diameter of the single-lumen main tube, small outer diameter of the main tube, reduced intubation difficulty, no need of replacing the tracheal catheter after an operation is finished and the like, and is suitable for people with smaller glottis trachea, such as children.

Description

technical field [0001] The invention relates to a medical device, in particular to a double-lumen bronchial catheter. Background technique [0002] The double-lumen bronchial catheter is currently the most commonly used device for lung isolation during anesthesia. There are two types of double-lumen bronchial catheters: left double-lumen bronchial catheter and right double-lumen bronchial catheter. Usually, the bronchial lumen of the double-lumen bronchial catheter, that is, the main tube end, is placed into the bronchi of the uninjured lung or the non-operated lung. The bronchial lumen of the lumen bronchial catheter, that is, the main tube end, is inserted into the pulmonary bronchi on the side of the operation. Clinically, choosing a larger double-lumen bronchial catheter as much as possible has the advantages of reducing mechanical ventilation resistance, avoiding easy slipping into the bronchi of the lung lobe, reducing cuff inflation and reducing cuff pressure. Disad...

AI Technical Summary

Problems solved by technology

Disadvantages: The outer diameter of the main tube of the double-lumen bronchial catheter is thick, which increases the difficulty of intubation and intubation-related injuries, including children and other patients with small trachea glottis or smaller physique. The inner diameter of the single-lumen tube in the double-lumen bronchial catheter is relatively Small size, not conducive to fiberoptic bronchoscope and suction tube operation, high resistance to mechanical ventilation

Disadvantages: The bronchial occlusion catheter can only occlude the bronchus of the operated side lung, which affects the operation of pneumonectomy. Before incision and ligation of the bronchial stump, the sleeve must be retracted to the respiratory tract. Interstitial positive pressure ventilation and suction on the non-operated lung cannot be used in the operation of patients with wet lung, the incidence of obstructive insufficiency is high, and the lung atrophy on the operated side is slow

[0005] Through patent retrieval, the existing comparative document 1CN201911214318.9 discloses "a double-lumen bronchial intubation" which provides a double-lumen bronchial intubation. The structural disadvantage of the flexible tube segment connected at the end is that the main tube and the auxiliary tube in the main tube are circular and side-by-side. Compared with the back-to-back D-shaped side-by-side structure of the Robertshaw double-lumen bronchial catheter currently used clinically, the outer diameter of the main tube is significantly increased. , the internal diameter of the main tube and the auxiliary tube is significantly reduced, clinical intubation is difficult, fiberoptic bronchoscopy and suction tube are difficult to operate, and the difficulty of airway management is significantly increased

[0006] Reference 2 CN201910981803.2 discloses "a double-lumen bronchial catheter" which discloses a double-lumen bronchial catheter. It includes a catheter inflation valve and a ventilation tube inflation valve. The catheter inflation valve is set on the catheter body, and the ventilation tube inflation valve is set on the auxiliary ventilation tube; the secondary ventilation tube is slid into the inside of the main ventilation tube, and the secondary ventilation tube and the main ventilation tube It has a certain curvature. After extending from the inside of the catheter body, it is easy to enter into the bronchi on both sides and facilitate tube placement. Its disadvantage is that it is similar to the principle of the bronchial occlusion catheter, but the auxiliary ventilator and its corresponding chute are significantly reduced. The effective cross-sectional area of ​​the main ventilator is small; the radian between the auxiliary ventilator and the main ventilator itself is not conducive to the alignment of the bronchoscope, and is not conducive to sputum suction in the trachea and bronchus; the alignment of the auxiliary ventilator is poor, and the incidence of obstructive insufficiency is high , difficult airway management

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