Medical injector

Abstract

The invention provides a medical injector. The injector comprises a push rod, a needle and an injector body; a first-level filter membrane is arranged at the lower end of the injector body; a second-level filter membrane is arranged between the needle and the first-level filter membrane; the injector body is provided with scales. The injector can effectively filter bottle stopper scraps and impurities; as two levels of filtration are adopted, tiny impurities can be well filtered out; the medical injector is simple in structure, economic and practical; the injector is provided with the scales, and the volume of injection solution can be well measured.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical syringe. Background technique [0002] At present, the commonly used syringes on the market are difficult to completely prevent the entry of tiny glass shards in the ampoule bottle when extracting the drug in the ampoule bottle; it is difficult to completely prevent the entry of rubber stopper impurities when wearing a sealed bottle. There is a possibility of pollution; moreover, injection medicine will produce a large number of insoluble particles. After insoluble particles enter the human body, they will have much greater consequences than the side effects of the drug itself. Impact. Now people have realized the seriousness of this problem and began to use needles or needle tubes with filter devices, but there are still some shortcomings in this needle or needle tubes, the most important of which is the selection of filter materials: too sparse can easily lead to The filtering ef...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used syringes on the market are difficult to completely prevent the entry of tiny glass shards in the ampoule bottle when extracting the drug in the ampoule bottle; it is difficult to completely prevent the entry of rubber stopper impurities when wearing a sealed bottle. There is a possibility of pollution; moreover, injection medicine will produce a large number of insoluble particles. After insoluble particles enter the human body, they will have much greater consequences than the side effects of the drug itself. Impact

Now people have realized the seriousness of this problem and began to use needles or needle tubes with filter devices, but there are still some shortcomings in this needle or needle tubes, the most important of which is the selection of filter materials: too sparse can easily lead to The filtering effect is not good, and if it is too dense, it will easily cause the filter material to be blocked, so that the liquid medicine will not flow smoothly.

Now there is also a double-filtered syringe, which is only equipped with two needles. One is used when dispensing the medicine, and the other is changed when injecting. Although this configuration ensures the filtering effect, it is inconvenient to use. When it is too large, it is difficult to ensure timely replacement, and the desired effect cannot be achieved

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