Auxiliary catheter for endotracheal intubation

Abstract

The invention discloses an auxiliary catheter for endotracheal intubation. The auxiliary catheter comprises a hollow catheter, wherein one end of the hollow catheter is sealed; the other end of the hollow catheter is sealed or provided with a structure which can be sealed; the front end of the hollow catheter is covered with a gasbag; gas vents are formed in the part, in the gasbag, of the hollow catheter; an inflating and deflating structure is arranged at the rear end of the hollow catheter; and the gasbag is inflated or deflated through the inflating and deflating structure. The gasbag of the auxiliary catheter provided by the invention can pass through the nasal meatus of a patient to reach the throat without obvious resistance after filled with a certain amount of gas. Thus, the narrowest part of the nasal meatus of the patient can be judged and a catheter, which passes through the nasal trachea of the patient and has an outside diameter approximately equal to that of the gasbag of the auxiliary catheter, can be selected. When necessary, the curvature of the front end of the auxiliary catheter can be adjusted by pulling a pull ring so as to lead the selected catheter passing through the nasal trachea to smoothly enter the nasal trachea to complete the process of the nasotracheal intubation.

Description

technical field [0001] The invention relates to the field of clinical medical devices, in particular to an auxiliary tube for tracheal intubation. Background technique [0002] In clinical medicine, endotracheal intubation is extremely important to establish respiratory management and prevent aspiration from blocking the airway. It is suitable for general anesthesia, treatment of dyspnea, and cardiopulmonary resuscitation. Various wards and emergency rescue sites outside the hospital. Tracheal intubation can be divided into orotracheal intubation and nasotracheal intubation according to the route. Nasotracheal intubation is a commonly used method of tracheal intubation. In traditional nasal endotracheal intubation, the nostril with better ventilation is first selected, and ephedrine is instilled to constrict the blood vessels of the nasal mucosa. Coat the front end of the endotracheal tube with medical lubricating oil, and the oblique opening of the endotracheal tube shou...

AI Technical Summary

Problems solved by technology

However, nasal endotracheal intubation is more difficult than oral endotracheal intubation, and has the following disadvantages: first, it is easy to cause complications such as nasal passage bleeding, posterior pharyngeal wall injury bleeding, and sinusitis; second, it is not easy to insert quickly and rescue in time; third, The lumen of the nasal endotracheal tube is small, it is not easy to suck sputum, and the airway resistance is large, etc.

In the prior art, Chinese patent (publication number: CN201643297U) discloses a disposable endotracheal intubation aid, which achieves a visual intubation process by installing an optical fiber on the inner wall of the arc-shaped catheter. Solve the problem of selecting a suitable catheter by measuring the caliber of the entire nasal passage, and the cost of the aid is too expensive and the application range is limited

Chinese patent (publication number: CN2792524Y) discloses a variable-diameter endotracheal tube. The head of the endotracheal tube contains an air bag, but the air bag cannot measure the caliber of the entire nasal passage to select a suitable catheter. The function is to expand the inner and outer diameter of the trachea, thereby increasing the ventilation volume. The air bag does not have the function of measuring the diameter of the nasal passage

Moreover, the endotracheal tube head has a "C"-shaped section, and the tip of the endotracheal tube head will also damage the nasal passage during intubation.

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