Injection dosing method and dosing apparatus utilizing same

Abstract

The invention provides an injection dosing method and a dosing apparatus utilizing the same. The injection dosing method includes building a first passage between a liquid bottle and a negative pressure suction apparatus and a second passage between the liquid bottle and an injection ampoule. The negative pressure suction apparatus sucks air in the liquid bottle through the first passage so that negative pressure is formed inside the liquid bottle, the negative pressure in the liquid bottle is transmitted to the terminal of the second passage in the injection ampoule through the second terminal so that liquid medicine is sucked into the liquid bottle, and accordingly the dosing process is completed. The dosing apparatus comprises a double-passage puncture needle, a suction tube and the negative pressure suction apparatus, wherein the head of the double-passage puncture needle is provided with a liquid medicine inlet and an air suction hole, the other end of the puncture needle, exposed from a plug of the liquid bottle, is provided with a negative pressure connector and a suction tube connector, the air suction hole of the puncture needle is communicated with the negative pressure connector to form the first passage, the liquid medicine inlet and the suction tube connector of the puncture needle are communicated with the suction tube to form the second passage. By the aid of the dosing method and the dosing apparatus utilizing the same, operation can be simplified, and defects of puncturing the rubber plug of the liquid bottle repeatedly and operational complication in the prior art are avoided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a liquid preparation method for aqueous injections and a dispensing device thereof. Background technique [0002] The dispensing referred to in medical treatment usually refers to transferring medicinal liquid or medicinal powder into a liquid bottle and injecting it into the human body through infusion for treatment. The existing method of dispensing water injections at home and abroad is usually to cut the neck of the small glass ampoule with a grinding wheel, then break off the upper part or directly crush the upper part with a metal instrument (such as scissors, tweezers, etc.), and then suck it with a syringe. The liquid medicine is injected into the liquid bottle. The disadvantages of the above-mentioned dosing method are: the capacity of the syringe is limited, if a group of liquids needs to be prepared with multiple water injection ampoules, it is n...

AI Technical Summary

Problems solved by technology

The disadvantages of the above liquid preparation method are: the capacity of the syringe is limited, if a group of liquid needs to be prepared with multiple water injection ampoules, it is necessary to extract and repeatedly puncture the rubber stopper of the liquid bottle, and the operation is cumbersome.

In addition, the syringe has no filtering function, and the suction proce

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