End-tidal carbon dioxide-guided airway surface anesthesia tube combined with gastric tube dual-purpose tube

Abstract

The invention relates to an end-expiratory carbon dioxide guided airway surface anesthesia tube combined stomach tube dual-purpose tube which comprises a big catheter. An inner cavity of the big catheter is divided into an end-expiratory carbon dioxide passage cavity and a stomach tube cavity, each of the end-expiratory carbon dioxide passage cavity and the stomach tube cavity is divided into a big tube cavity and a small tube cavity, the small tube cavity in the stomach tube cavity is penetratingly provided with a transnasal approach surface anesthesia tube, the small tube cavity in the end-expiratory carbon dioxide passage cavity is penetratingly provided with a larynx and glottis lower surface anesthesia tube, an end-expiratory carbon dioxide collection port is formed in the side wall of a middle section of the big catheter, the tail end of the larynx and glottis lower surface anesthesia tube extends out from one side, close to the tail end of the big catheter, of the end-expiratory carbon dioxide passage cavity, a gastric content suction port is formed in the side wall of the tail end of the big catheter, and the tail end of the transnasal approach surface anesthesia tube extends out from the tail end of the big catheter. The eend-expiratory carbon dioxide guided airway surface anesthesia tube combined stomach tube dual-purpose tube provides a better condition for awake tracheal intubation and bronchoscopy and can aspirate gastric content of patients who are not prohibited from eating when necessary.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an end-tidal carbon dioxide-guided airway surface anesthesia tube combined with a gastric tube dual-purpose tube. Background technique [0002] Awake tracheal intubation is one of the main measures of the American Society of Anesthesiologists' practical rules for the management of difficult airways. If it is estimated that it may be difficult to ensure effective ventilation and oxygenation after induction of surgical patients, and it is suspected that the patient is at risk of aspiration of gastric contents, the patient should be kept awake for tracheal intubation. As far as awake tracheal intubation is concerned, whether it is fiberoptic bronchoscopic guidance or blind tracheal intubation, the nasal route is easier, because the narrow nasal cavity has a certain support and guiding effect on the FOB or tracheal tube, and the FOB or tracheal tube It is also easier for the catheter ...

AI Technical Summary

Problems solved by technology

Throat surface anesthesia combined with cricothyroid puncture and subglottic surface anesthesia via oral and laryngeal anesthesia tube is more commonly used, but cricothyroid puncture is an invasive operation, and it cannot be implemented for patients with huge tumors in the front of the neck and neck scar contractures. And for patients who have difficulty opening their mouths, it is difficult to spray local anesthetics through the oral and laryngeal anesthesia tube. Even for patients with normal mouth openings, local anesthetics cannot accurately reach the supraglottic and glottic areas, and the anesthesia effect cannot be improved. not ideal

Although aerosol inhalation of local anesthetics is a non-invasive operation, it requires special equipment and is time-consuming, and it is often difficult for emergency patients to implement

Spraying local anesthetic (spray-as-you-go) through the FOB endoscopic channel may be a better method of topical anesthesia, but FOB is expensive, and most primary hospitals in my country are still unable to equip this device

For bronchoscopy patients, spray-as-you-go topical anesthesia is also less used due to limited conditions

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