Interrupted thread clearance hole wall type injection needle

Abstract

The invention relates to the technical field of medical equipment, in particular to an interrupted thread clearance hole wall type injection needle. The interrupted thread clearance hole wall type injection needle is composed of a needle body, a medicine feeding channel, diffusion seams and a needle base. The medicine feeding channel which is longitudinally arranged along the needle body in the longitudinal direction is arranged in the needle body, the upper end of the medicine feeding channel is communicated with the needle base, and the lower end of the medicine feeding channel is located above an inclined pointed head. The diffusion seams communicated with the medicine feeding channel are formed in the wall of the needle body. Each diffusion seam is of the shape of a cylindrical spiral line. In the injection process, liquid medicine entering the needle body flows through the medicine feeding channel and is fed along the cylindrical spiral line shape of the diffusion seams. Thus, a diffusion source of the liquid medicine is converted into linear diffusion from existing punctiform diffusion, the effective area of the liquid medicine diffusion source is greatly enlarged, and the diffusion efficiency of the liquid medicine in the human body is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an injection needle with an intermittent screw gap hole wall. Background technique [0002] The injection needles used for the injection of existing instruments in the market are all oblique pointed, and the needle hole is located at the end of the needle, or there are 1-2 circular or oval holes on the side wall near the needle end, When piercing the medicine bottle of powdery medicine, and when piercing the human body for injection, there are the following problems: [0003] 1. For the injection needle whose pinhole is located at the end of the needle, when the injection needle penetrates the cap of the medicine bottle, the rubber at the puncture part will drill into the injection needle, resulting in suction blockage or semi-blockage, resulting in powdery drugs and solvents Insufficient solvent when mixing; [0004] 2. For the puncture needle whose pinhole is located ...

AI Technical Summary

Problems solved by technology

[0003] 1. For the injection needle whose pinhole is located at the end of the needle, when the injection needle penetrates the cap of the medicine bottle, the rubber at the puncture part will drill into the injection needle, resulting in suction blockage or semi-blockage, resulting in powdery drugs and solvents Insufficient solvent when mixing;

[0004] 2. For the puncture needle whose pinhole is located on the side wall of the needle body, when passing through a thicker rubber plug, the vacuum on the side wall of the needle body increases the roughness of the needle body surface, resulting in a gap between the needle body and the rubber plug. The friction force increases, so it is more laborious to puncture the rubber stopper;

[0005] 3. The existing injection needles only have 1-2 pinholes. Therefore, the channel through which the medicinal liquid is injected into the human body is relatively single. The diffusion effect of the liquid medicine in the human body is relatively slow

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