Novel positioning evaluation anti-counterflow device for laboratory rat oral trachea cannula

Abstract

The invention relates to a novel positioning evaluation anti-counterflow device for a laboratory rat oral trachea cannula. The novel positioning evaluation anti-counterflow device comprises the cannula, an adapter, a tee joint, an air guide tube, a switch and a bubble barrel. The cannula is connected with the front end of the adapter, the rear end of the adapter is connected with a first port of the tee joint, a second port of the tee joint is connected with a respirator, the front end of the air guide tube is connected with a third port of the tee joint, and the rear end of the air guide tube is communicated with the bubble barrel. An airflow channel with the round cross section and the trapezoidal longitudinal section is formed in the bubble barrel, the port, with the small hole diameter, of the airflow channel is communicated with the air guide tube, the port, with the large hole diameter, of the airflow channel serves as a bubble outlet, and the switch is installed on the air guide tube. It can be guaranteed that the trachea cannula is located in the trachea lumen of a rat and kept smooth, bubbles escaped from the bubble barrel in the expiration period of the rat are easy to observe, and liquid can be prevented from counterflow from the bubble barrel and the air guide tube in the inspiration period of the rat.

Description

Technical field [0001] The invention relates to a rat oral tracheal intubation, in particular to a new type of experimental rat oral endotracheal intubation positioning assessment anti-reflux device. Background technique [0002] After the rat is anesthetized, the airway is managed according to the experimental needs, and the breathing machine can be assisted by the way of connecting the ventilator through the oral tracheal intubation. In many experiments, rats are generally anesthetized relatively shallow and maintain the basic pharyngeal nerve reflex. After the tracheal intubation enters the rat’s glottis closes, the tracheal intubation easily slips into the adjacent esophagus, causing ventilation failure. Therefore, it is necessary to perform further positioning assessment after rat tracheal intubation to ensure that the intubation is in the rat’s tracheal lumen. During the experimental operation, accidents such as slippage, displacement, and secretion blockage of the intubat...

AI Technical Summary

Problems solved by technology

In many experiments, the anesthesia of the rats is generally shallow, and the basic throat nerve reflex is maintained. After the tracheal intubation is entered, the rat's glottis is closed, and the tracheal intubation is easy to slip into the adjacent esophagus, resulting in ventilation failure.

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