VENTILATION CATHETER CAPABLE OF AUTOMATICALLY REGULATING PRESSURE IN SEALED BALLOON, AND CONNECTING DEVICE

WIPO Patent Application WO/2023/137936

A1

A ventilation catheter capable of automatically regulating pressure in a sealed balloon, and a connecting device. The ventilation catheter comprises a ventilation catheter body (1) having a front segment provided with a sealed balloon (2), wherein a bias balance adjuster (3) is provided in communication with the sealed balloon (2), and a communication pipe is provided in communication with the bias balance adjuster (3) and is in communication with a breathing circuit. During mechanical ventilation, gas in the breathing circuit automatically adjusts the gas pressure in the sealed balloon (2) by means of the bias balance adjuster (3), so that the gas pressure in the sealed balloon (2) is greater than the gas pressure in the breathing circuit, with the pressure difference being less than 10 mmHg. The pressure in the sealed balloon (2) of the ventilation catheter synchronously and periodically changes with the airway pressure during mechanical ventilation, so that the sealed balloon (2) has relatively small gas pressure during the expiratory phase with small mechanical ventilation airway pressure, and thus the blood circulation of the tracheal mucosa is periodically restored to prevent tracheal mucosa injuries.

GAO HONG (CN)
GAO JU (CN)
YU WEIFENG (CN)
WANG ZHIPING (CN)
TIAN MING (CN)
HU DAWEI (CN)
HUANG DONGXIAO (CN)
XIONG ZHENTIAN (CN)
ZHANG LONGSHENG (CN)

PCT/CN2022/094034

July 27, 2023

May 20, 2022

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GAO HONG (CN)

A61M16/04

CN114432558A	2022-05-06
US4501273A	1985-02-26
CN1559628A	2005-01-05
US4825862A	1989-05-02
CN101296724A	2008-10-29

SHANGHAI HISONG INTELLECTUAL PROPERTY LAW FIRM (GENERAL PARTNERSHIP) (CN)

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