Double-balloon laryngeal mask airway for gastroenterological endoscope examination

Abstract

The invention discloses a structure of a double-balloon laryngeal mask airway for gastroenterological endoscope examination. The double-balloon laryngeal mask airway comprises a ball balloon, a cover balloon, an air vent pipe, an air source joint, inflation tubes, a plug and pressure indicators, wherein the ball balloon is ball-shaped; the cover balloon is oval-shaped; the air vent pipe sequentially passes through the ball balloon and the cover balloon; a front-end opening of the air vent pipe is wrapped by the ball balloon to form a ring-shaped balloon buffering opening, the middle part of air vent pipe is connected with the cover balloon to form a back balloon, and an opening in the back end of the air vent pipe is connected with the plug; a bypass channel opening in a side wall of the air vent pipe is connected with the air source joint; and the side wall or the rear part of the air vent pipe is connected with the inflation tubes communicated with the pressure indicators. A gastroenterological endoscope enters the esophagus and the stomach or an intestine of a human body through independent cavity channels at the inner part of the air vent pipe; and a supporting table and a blocking piece are arranged at an air vent opening in the middle part of a laryngeal mask, and the air vent opening is communicated with a trachea of the human body to form a closed respiration channel. Through the adoption of the double-balloon laryngeal mask airway, gastroenterological endoscope examination can be conducted while a patient has an anesthesia operation or is rescued, and reflux content in the stomach can be prevented from entering the trachea, so as to reduce pain of the patient and improve the safety of the operation.

Description

technical field [0001] The invention belongs to a medical device for artificial airway ventilation, and relates to a laryngeal mask airway, in particular to a double-airbag laryngeal mask airway for gastrointestinal endoscopy. technical background [0002] Laryngeal mask airway (Laryngeal mask airway, LMA), referred to as laryngeal mask, is composed of a ventilation catheter and a round inflatable air mask at the far end. throat for ventilation. The laryngeal mask is beneficial to maintain the airway unobstructed, and does not require a special position. The operation is simple and quick, which can buy time and save the patient's life. Therefore, the laryngeal mask, as a medical device used for surgical anesthesia, rescue of critically ill patients or other patients with assisted breathing to establish artificial airway ventilation, has been widely used in the fields of clinical anesthesia, difficult airway management and emergency treatment, and has made great achievements...

AI Technical Summary

Problems solved by technology

[0007] But its disadvantages: the drainage cavity is narrow and can only allow thinner tubes such as gastric tubes to pass through. Although the sealing gasket is designed, it cannot completely seal the esophagus, and gastric juice or gastric contents may overflow, and there is a certain risk.

[0010] However, its disadvantage is that the drainage tube with esophageal obstruction cuff and the cuff are separate structures, and there is a certain gap between them, which cannot guarantee complete airtightness, and two operations are required during the operation.

[0012] But its shortcomings: Although the blocking balloon at the front end can effectively prevent esophageal reflux, the blocking balloon at the front end completely seals the esophagus, making it impossible to detect the esophagus or stomach

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