Disposable single-cavity bronchial catheter

Abstract

The invention discloses a disposable single-cavity bronchial catheter comprising a single-cavity catheter body, a connecting through head and a top end ventilation port are formed in the two ends of the single-cavity catheter body respectively, a main trachea inflation cuff and a main bronchial inflation cuff are arranged on the single-cavity catheter body, a side branch ventilation hole is formedin the single-cavity catheter body, and a switching device for rapidly realizing switching between one-lung ventilation and two-lung ventilation is arranged on the single-cavity catheter body. According to the disposable single-cavity bronchial catheter, by means of the single-cavity catheter body, damage to the airway of a patient can be reduced, the inner diameter of a catheter cavity can be increased, a fiber bronchoscope or an electron microscope can be used for examination and positioning, sputum aspiration is convenient for even a patient with a relatively small airway, the requirementfor switching between one-lung ventilation and two-lung ventilation can be met conveniently and quickly through the switching device, cuffs are not needed for plugging, the requirement for the lengthof an opening of the right main bronchial tube is avoided, and the problem that the plugging cuffs are damaged is solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a disposable single-lumen bronchial catheter. Background technique [0002] The number of lung surgery patients is increasing year by year. The airway of the human body is above the carina, which is the main airway. There is only one trachea. The left main bronchus is slender compared to the right main bronchus, and the right main bronchus is relatively short and thick, with a higher opening than the left one. Lung surgery needs to isolate the two lungs during the operation, so that one lung can be ventilated to ensure oxygen supply. Collapsing is convenient for surgery. For this reason, special tools must be used to achieve intraoperative one-lung ventilation. At present, the common tools for lung surgery to achieve one-lung ventilation are disposable double-lumen bronchial catheters and disposable bronchial occluders, no matter which one is used In the end, anesthesiol...

AI Technical Summary

Problems solved by technology

[0002] The number of lung surgery patients is increasing year by year. The airway of the human body is above the carina, which is the main airway. There is only one trachea. The left main bronchus is slender compared to the right main bronchus, and the right main bronchus is relatively short and thick, with a higher opening than the left one. Lung surgery needs to isolate the two lungs during the operation, so that one lung can be ventilated to ensure oxygen supply. Collapsing is convenient for surgery. For this reason, special tools must be used to achieve intraoperative one-lung ventilation. At present, the common tools for lung surgery to achieve one-lung ventilation are disposable double-lumen bronchial catheters and disposable bronchial occluders, no matter which one is used In the end, anesthesiologists will use fiberoptic bronchoscopes or electronic mirrors to ensure the correct position of the catheter. The mirror must enter the endotracheal tube, so there are certain requirements for the inner diameter of the endotracheal tube. Double-lumen bronchial tubes of size 32 and below cannot use fiber optic tubes. Bronchoscopy or electron microscopy positioning

[0003] The existing double-lumen bronchial catheter has a large outer diameter and high hardness, which causes great damage to the airway of the patient, and because the double-lumen bronchial catheter is divided into two lumens, the channel left for the fiberoptic bronchoscope or electronic mirror is very small, while for the airway For smaller patients, the use of a double-lumen bronchial tube, choosing a tube smaller than 32 will cause the bronchoscope to fail to enter the double-lumen bronchial tube and make it difficult to judge the position of the tracheal tube, which will cause difficulties for surgical anesthesia, and the narrow lumen is not convenient for suction. Sputum operation. In addition, the occluder requires ordinary endotracheal intubation (7.5# or 8.0# catheter) first, and then inserts the occluder to block the main bronchus on one side. There are many steps in the operation, and the right main bronchus is often encountered It is difficult for short patients to achieve right lung occlusion, and some patients have branches in the main airway. The occluder cannot meet the surgical requirements and has to be replaced by a double-lumen bronchial catheter, and the occluder is sealed with a cuff The main bronchus is blocked, and it is easy to be damaged during operations such as suctioning. Insufficient pumping is easy to leak air. Too much pumping has the risk of damage. It is often necessary to switch between single-lung ventilation and double-lung ventilation during the operation. It is not very convenient to pump and pump air.

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