Rat and mouse gas anesthesia mask

Abstract

The invention provides a rat and mouse gas anesthesia mask which comprises a support sleeve, an anesthesia nozzle and an anesthesia hose joint. The support sleeve comprises a support sleeve body, a sliding groove and a latex thin film, and one end of the support sleeve body is sealed by the latex thin film. The anesthesia nozzle is slidably arranged in the support sleeve in a sleeving manner and comprises a hollow pipeline unit and a fixed component, the hollow pipeline unit comprises a hollow pipeline body, a first tangent plane is obliquely arranged at one end of the hollow pipeline body, second tangent planes are arranged on two opposite sides of the first tangent plane, the first tangent plane and the front ends of the second tangent planes are enclosed to form a mouse tooth fixing plate, and a mouse upper incisor inserting hole is formed in the mouse tooth fixing plate. A fixing component is slidably arranged in the sliding groove and connected with the hollow pipeline body, the latex thin film and the mouse tooth fixing plate are arranged on the same side, an eccentric circular hole is formed in the latex thin film and corresponds to a sliding position of the mouse tooth fixing plate, and mouth and nose of a mouse and the mouse tooth fixing plate penetrate the eccentric circular hole. The mask has the advantages that the mask is open, covering area is less, and anestheticconsumption is low.

Description

technical field [0001] The invention belongs to the technical field of medical imaging, in particular to a gas anesthesia mask for rats and mice. Background technique [0002] Animal imaging is a technology that uses animal PET, CT, MRI, ultrasound and other imaging techniques to detect the living body of experimental animals and observe their anatomical structures and physiological and biochemical reactions. In animal imaging technology, one of the most critical technologies is animal anesthesia, because when conducting experiments on animals, animals will be frightened and move due to human manipulation, or even cause injury accidents. Therefore, before animal imaging experiments, it is necessary to Anesthetize the animal. On the one hand, animal anesthesia needs to ensure that the animals will not wake up during the experiment, and on the other hand, it must ensure the comfort of the animals during the anesthesia and avoid animal death. At present, the better anesthesia...

AI Technical Summary

Problems solved by technology

[0005] The closed animal scanning cabin avoids the potential hidden dangers of anesthesia gas escaping to the experimenters, but the scanning cabin covers the whole body of the animal, which is not good for CT scanning and is prone to artifacts

At the same time, the assembly and disassembly of the scanning cabin is relatively complicated, and its stability is not as good as that of a fixed scanning bed, which has a great impact on image registration and motion artifacts

The most important thing is that when performing animal PET dynamic scanning, it is often necessary to start scanning from time 0, and scan immediately after injection of the animal bedside, and the closed animal cabin is extremely unfavorable for this operation

[0006] Using a large mask to cover the animal's face avoids the inconvenience caused by the closed animal cabin, but the area covered by the mask has a great influence on the animal head image on the CT image, and the CT image of the animal head in the area covered by the mask is obviously dark. And it will produce stripe-like artifacts due to the structure of the mask, which is also very unsightly in the three-dimensional display of the image, and it is difficult to estimate the error caused by the analysis of the head data in the later stage

[0007] Using a smaller mask and a larger anesthesia gas volume avoids the influence of the above two methods, but it will cause a large consumption of anesthesia agents, and at the same time, the loss of equipment such as imaging anesthesia machines is increased

At the same time, the anesthesia gas escapes a lot, which is likely to cause potential harm to the experimenters. At the same time, the imaging equipment using this type of anesthesia is often required to be placed in a laboratory with ventilation facilities, and the applicability is limited.

Various factors make this method uneconomical from the perspective of the user

Images