An experimental mouse's position and evaluation of the intubation of oral trachea intubation

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 an orotracheal intubation for rats, in particular to an anti-reflux device for positioning and evaluating the orotracheal intubation for experimental rats. Background technique [0002] After the rats were anesthetized, airway management was performed according to the experimental needs, and assisted breathing could be performed by connecting a ventilator through an orotracheal intubation. The anesthesia of the rats in many experiments is generally light, and the basic throat nerve reflex is maintained. After the tracheal intubation enters, the rat's glottis is closed, and the tracheal intubation is easy to slip into the adjacent esophagus, resulting in ventilation failure. Therefore, it is necessary to further assess the positioning after intubation of the rat trachea to ensure that the cannula is in the lumen of the trachea of ​​the rat. During the experimental operation, accidents such as slippage, displacement, and secreti...

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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