Improved single-cavity bronchial catheter

Abstract

The invention provides an improved single-cavity bronchial catheter. The single-cavity bronchial catheter comprises an endotracheal catheter and a first air bag arranged on the outer wall of the endotracheal catheter; the lower end of the endotracheal catheter is also connected with the bronchial catheter; a second air bag is arranged outside the bronchial catheter; a bronchial vent is also arranged on one side, far away from the bronchial catheter, of the lower end of the endotracheal catheter; the thickness of the catheter wall at the bronchial vent is 1.5-5 times of the thickness of the catheter wall at the upper end of the endotracheal catheter; the bronchial vent is tubular to form a vent pipe; a third air bag is arranged on the upper wall inside the vent pipe; a first wall channel isformed in the left pipe wall of the endotracheal catheter; a fourth air bag is arranged on the inner upper wall of the bronchial catheter; and a second wall channel is arranged in the right pipe wallof the endotracheal catheter. The single-cavity bronchial catheter disclosed by the invention can meet the requirements of operations on free switching of single-lung ventilation and double-lung ventilation, and the diameter of the endotracheal catheter is small, so that the single-cavity bronchial catheter can be suitable for children and other patients with thinner tracheae. Catheterization isnot needed again after operation, so that the single-cavity bronchial catheter is suitable for clinical popularization and use.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an improved single-lumen bronchial catheter. Background technique [0002] Clinically, during thoracic surgery, one-lung ventilation with left and right lungs separated is required, and anesthesiologists are required to stop ventilation of the affected lung and collapse while the healthy lung is ventilated normally, so as to ensure the smooth progress of the operation and prevent the healthy lung from being damaged. Infection sources, tumors and other pollution in the lung on the affected side protect the key side lung; after the operation, normal ventilation of both lungs is restored. At present, double-lumen endotracheal catheters or single-lumen endotracheal catheters + bronchial occluder are commonly used clinically to switch between one-lung ventilation and double-lung ventilation, but there are many problems in the process of using these two methods for airway management. ...

AI Technical Summary

Problems solved by technology

[0003] 1. There are few optional models of double-lumen tubes, and the scope of application is small. The minimum model is 26, which is not suitable for small children;

[0004] 2. The outer diameter of the double-lumen catheter is relatively thick, and the material is hard. During the operation, the position needs to be adjusted continuously through rotation and movement, which will increase the risk of damage to the glottis and airway, or even make it impossible to ventilate, bringing safety hazards to the patient;

[0005] 3. Due to the characteristics of the anatomical structure of the airway, the left bronchus of the human body is longer, and a single vent hole at the front can ensure the ventilation of the left upper lung and left lower lung, while the right bronchus is shorter. The right double-lumen bronchus currently used clinically There is a fixed opening on the side of the head end for ventilation of the right upper lung, so the functions of the two single tubes of the double-lumen trachea are quite different and cannot be interchanged, and the position needs to be adjusted repeatedly, which may increase the risk of failure of one-lung ventilation and even lead to hypoxemia;

[0006] 4. Some patients who need a ventilator after surgery need to pull out the double-lumen tube and replace it with a thinner single-lumen tube. Secondary intubation increases the risk of airway damage in patients

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