Oropharyngeal airway

Abstract

An oropharyngeal airway including the upper curved face, an upper plane portion located outside the upper curved face, a lower curved surface and a lower plane portion located outside the lower curvedsurface, Between that upper cur surface and the lower cur surface there are provided left and right first connecting walls, upper curved face, Between that low curved surface and the two first connecte walls an intermediate air passage and two lateral air passages are formed, the distance between the two first connecting walls gradually decreases in the flow direction of the gas, As that intermediate airway become narrower and the two lateral airway become wider, and the first connecting wall is arranged in a concave shape and a flexible water-absorbing material is adopted, By using Bernoulliprinciple of fluid mechanics to produce the pressure difference between the left and right sides of each first connecting wall, The oropharyngeal airway of the invention can absorb oropharyngeal secretion while improving ventilation, reduce regurgitation misaspiration, clear intubation field of vision, reduce intubation time, improve intubation success rate, and reduce anoxia time of patients when the tracheal tube is inserted.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to an oropharyngeal airway. Background technique [0002] The oropharyngeal airway is a simple and convenient supraglottic ventilation device that prevents the tongue from falling backward by pressing down the tongue, supports the tongue palatal arch and uvula, separates the tongue base from the back wall of the pharynx, relieves upper airway obstruction, and maintains air Unobstructed airway, mainly used for general anesthesia induction period for patients with tracheal intubation before surgery, upper airway obstruction caused by tongue fall in various coma patients during non-tracheal intubation, and establishment of temporary airways for other types of difficult airways. An essential airway management auxiliary tool for clinical departments such as anesthesiology, respiratory medicine, ICU and emergency department. [0003] The existing oropharyngeal airway is only com...

AI Technical Summary

Problems solved by technology

[0003] Existing oropharyngeal airways are only made of flat tubes or sliced ​​ventilation ducts made of rubber or plastics. Oropharyngeal secretions in children, comatose patients, and patients with a full stomach are usually more than ordinary people. When the pharyngeal airway is used, the secretion of the oropharynx will further increase due to stimulation, which increases the risk of aspiration. When the tracheal intubation is subsequently changed, the blurred vision will affect the operation, increase the difficulty of intubation, and prolong the patient's hypoxia time.

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