Tail Vein Injection Visualizer

Intravenous injection into the mouse or rat tail is a challenging task that requires skill, practice, and patience. During experiments, multiple failed attempts can lead to frustration and injuries to the animal. It is widely agreed that there are no shortcuts to mastering tail vein injection. The key to success lies in repeated practice, honing the technique, and gaining confidence. However, even with confidence, it is still difficult to achieve complete certainty.

The challenges mainly arise from three factors:

1) the firmness of the animal's restraint,

2) the fullness of the tail veins, and

3) the direction of the needle when entering the vein.

The Tail Vein Injection Imaging Device solves these problems: First, using a animal restrainer, the animal can be loaded quickly, firmly secured, and the animal is in a comfortable position without jumping forward, ensuring stability during injection. Second, using light to illuminate the animal's tail to make the blood vessels in the tail visible, so that the needle tip can be inserted in a targeted manner under visible conditions, rather than blindly relying on the feel of the hand. Further, the experimenter can check if the needle has entered the blood vessel by swinging the needle to see if the blood vessel moves with it.