Nasal mask for anesthesia

Abstract

The invention provides a nasal mask for anaesthesia. The nasal mask comprises a nasal mask ventilation cavity body attached to the upper lip and the nostrils, and symmetrical cheek fitting parts attached to the face cheeks around the nose. The nasal mask ventilation cavity body is a hollow cavity body formed by three hard surfaces, which are an upper lip fitting surface, a nostril fitting surface and a handheld end surface, wherein the handheld end surface is connected with the upper lip fitting surface and the nostril fitting surface to form an outer end surface of the nasal mask ventilation cavity; the middle portion of the outer end surface is provided with an inward-sinking handhold indent; the upper lip fitting surface is arc-shaped and is fitted to the upper lip; the nostril fitting surface consists of a pair of nostril ventilation plugs and the base bottom surfaces thereof; the inner layers of the nostril ventilation plugs are cylindrical pipes communicating with the inner cavity of the nasal mask ventilation cavity body; the outer layers of the nostril ventilation plugs are in the shape of a water drop and are made of soft materials to be tightly fitted to the nostrils of a patient; the other end of the nasal mask ventilation cavity body communicates with a ventilation pipe. The nasal mask is suitable for handholding of anesthetists and positive pressure ventilation, is small in size, does not occupy the space of the oral cavity, can be accepted by a patient easily and does not influence the endoscope operation in the oral cavity during anaesthesia.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a special nasal mask for anesthesia connected with the breathing circuit of an anesthesia machine. Background technique [0002] During general anesthesia, the artificial positive pressure ventilation is connected to the breathing circuit of the anesthesia machine through the mask (closed mouth and nose) is a non-invasive control breathing technology widely used in operating rooms and various anesthesia places, and it is to ensure that anesthetized patients can establish an artificial airway ( Techniques to maintain normal ventilation before and after endotracheal intubation or laryngeal mask placement). However, since the patient’s consciousness exists before anesthesia induction or after awakening, the mask seals the mouth and nasal cavity at the same time, and the patient is prone to fear and rejection; , mask ventilation hinders the operation of the gastroscope, so a nasal mas...

AI Technical Summary

Problems solved by technology

However, since the patient’s consciousness exists before anesthesia induction or after awakening, the mask seals the mouth and nasal cavity at the same time, and the patient is prone to fear and rejection; , mask ventilation hinders the operation of the gastroscope, so a nasal mask that can do non-invasive positive pressure ventilation is needed

[0003] The nasal mask in the prior art still adopts a non-closed breathing method, that is, the nasal mask is not airtightly combined with the patient's face, and the air intake pipe is not tightly combined with the nostrils. It is only suitable for the patient's oxygen therapy under spontaneous breathing, not for Positive pressure control ventilation in anesthesia management; and the nasal mask with airtight function is large in size, and its function is to cooperate with the ventilator, which is not suitable for respiratory management during anesthesia

Images