Dose adjustable syringe based on rotary inhalation

Abstract

The invention relates to the technical field of injectors, in particular to a dosage-adjustable injector based on a rotary suction type. The needle tube is installed at the inner end of the needle sleeve, the push tube is installed at the inner end of the needle tube, baffles are arranged on the two sides of the tail end of the needle sleeve, scale rods are arranged on the side faces of the baffles, dispatching blocks are connected to the scale rods in a threaded mode, the push tube is matched with the inner end of the needle tube in a telescopic mode, sleeves are arranged on the two sides of the push tube, and the sleeves are matched with the scale rods in an inserted mode. Through the scale rods and the dispatching block, in the injection process, the dispatching block is rotated to move to the required metering scale position, the pushing tube is pushed at the moment, medicine at the inner end of the needle tube is pushed out through the pushing head, the two sleeves and the two scale rods slide at the moment, and when the tail ends of the sleeves make contact with the dispatching block, the pushing tube cannot continue to slide; at the moment, required metering is completely injected into an injector, metering of injected medicine can be adjusted, injection efficiency is improved, and the situation that patient recovery is affected by inaccurate metering caused by manual injection is avoided.

Description

technical field [0001] The invention relates to the technical field of syringes, in particular to a rotary suction-based syringe with adjustable dosage. Background technique [0002] A syringe is a common medical device, and the process of withdrawing and injecting gas or liquid with a needle is called injection. The syringe consists of a syringe with a small hole at the front end and a matching piston core rod, which is used to inject a small amount of liquid or inject it into areas that are inaccessible by other methods or withdraw it from those places. When the core rod is pulled out, the liquid Or the gas is inhaled from the small hole at the front end of the syringe, and the liquid or gas is squeezed out when the core rod is pushed in. The syringe can also be used for medical equipment, containers, and scientific instruments such as some chromatography to inject through the rubber septum. [0003] When the existing syringes are used to inject medicaments, they usually ...

AI Technical Summary

Problems solved by technology

[0003] When the existing syringes are used to inject medicaments, they usually use the experience accumulated by the medical staff to perform the injection of drug metering. The way of artificially controlling the metering is relatively difficult for some beginners, and it will also affect the injection of the injectee. effect, and even cause secondary damage to the injected person

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