Precise quantitative injector for animal experiment

Abstract

The invention discloses a precise quantitative injector for an animal experiment, and belongs to the field of medical apparatuses. The injector comprises an injection tube, a quantitative tube, a piston and a pushing assembly. An opening is formed in one end of the injection tube. An end cover is arranged at the other end of the injection tube. The piston is arranged in the injection tube and divides the interior of the injection tube into a front cavity and a rear cavity which are not communicated with each other. The opening is communicated with the front cavity. The pushing assembly is usedfor pushing the piston to move in the injection tube in the axial direction of the injection tube. The quantitative tube is spiral. One end of the quantitative tube is communicated with the rear cavity of the injection tube. The other end of the quantitative tube is provided with a sealing plug. Supplementing liquid is arranged in the quantitative tube. Scale lines are arranged on the wall surface of the quantitative tube. By arranging the quantitative tube, operators can precisely control the amount of medicines injected into an animal body each time without sucking the medicines multiple times, and the precise injection of the medicines can be achieved. The injector is simple in structure, low in manufacturing cost and suitable for use and popularization.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a precise quantitative injector for animal experiments. Background technique [0002] Animal anatomy and histology and embryology are sciences that study the shape, structure, and development of normal animal organisms. In the medical research of animal anatomy, it is necessary to inject various contrasting medical reagents into the researched animals, so as to study the changes in the functions of various parts of the animal's body under the action of the medical reagents. [0003] The current traditional syringe includes a syringe and a piston assembly located in the syringe. The piston assembly divides the syringe into a rod chamber and a rodless chamber, and the rodless chamber is provided with a medicament. By pushing the piston assembly, the medicament in the rodless cavity is squeezed out of the injection tube and injected into the animal body. For some medicaments, fracti...

AI Technical Summary

Problems solved by technology

[0005] Inhaling quantitative medicines in multiple times will increase the number and time of drawing medicines, making the whole injection process very cumbersome, and at the same time increasing the possibility of medicine contamination

Although there are electronic precision injection experimental equipment on the market at present, the cost of these equipment is relatively high, and many laboratories have not yet been fully popularized.

Images