Right double-lumen bronchial cannula with movable side hole

By designing a right double-lumen endotracheal tube with movable side holes, the problem of improper positioning of the right main bronchus was solved, enabling precise lung isolation and ventilation, reducing ventilation dead space and the risk of complications, and improving oxygenation efficiency.

CN223817990UActive Publication Date: 2026-01-23FOURTH MILITARY MEDICAL UNIVERSITY
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Patent Information

Application Number
CN202520226400.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-13
Publication Date
2026-01-23
Estimated Expiration
2035-02-13

AI Technical Summary

Technical Problem

Due to individual differences in the structure of the human airway, especially the relatively shorter and straighter right main bronchus, it is difficult to correctly place the right double-lumen endotracheal tube, which is prone to improper placement and ventilation difficulties, such as mistakenly entering the right upper lobe bronchus or misaligning the side holes with the right upper lobe opening. Current technology is not able to achieve precise lung isolation and ventilation.

Method used

A movable side-hole right double-lumen endotracheal cannula was designed. By setting a connecting channel and a moving mechanism inside the secondary bronchus, including an outer slip ring, an inner slip ring, a guidewire, and a locking assembly, the position of the side hole can be flexibly adjusted, ensuring that the catheter is accurately aligned with the opening of the right upper lobe when it is not completely withdrawn, reducing ventilation dead space and improving oxygenation efficiency.

Benefits of technology

It enables precise adjustment of the side hole position without adjusting the catheter, reducing ventilation dead space, improving oxygenation efficiency, avoiding the risks of trauma and complications caused by repeated movements, such as airway damage, bleeding or infection, and ensuring optimal ventilation and isolation.

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Abstract

The utility model discloses a right double lumen bronchial cannula with a movable side hole, which relates to the technical field of medical instruments and comprises a main branch tube and an auxiliary branch tube, a first cuff is arranged at the lower end between the main branch tube and the auxiliary branch tube, a second cuff is arranged at the lower end of the auxiliary branch tube and positioned at the lower end of the first cuff, and a connecting channel is arranged in the auxiliary branch tube. The lower end of the connecting channel is provided with a side hole assembly, and the upper end of the connecting channel is provided with a moving mechanism. The side hole assembly comprises an elastic support, the elastic support is fixed in the lower end of the auxiliary supporting pipe, and a side hole is formed in the elastic support. According to the right double-lumen bronchial cannula with the movable side hole, through the overall structural matching design, when the position is improper, the catheter does not need to be adjusted, only the position of the side hole needs to be adjusted, and therefore the right lung superior lobe opening can be aligned more accurately, and the most suitable ventilation mode is customized for each patient.
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