Medicine dissolving syringe adopting air source provided by air source pump

Abstract

The invention relates to a medicine dissolving syringe adopting an air source provided by an air source pump. The medicine dissolving syringe comprises a needle tubing (3) and a syringe needle which is connected to the needle tubing (3), wherein a rubber plug (2) and a core rod (1) which is connected to the rubber plug (2) are arranged in the needle tubing (3); one side face of the rubber plug (2)is a conical surface; three rubber strips (2.1) are uniformly distributed on the conical surface, and an intersection point of extension lines of the three rubber strips (2.1) is a central point of the conical surface; the other side face of the rubber plug (2) is a plane, and a threaded hole (2.2) is formed in the plane; a threaded connector (1.2) is connected to the end of the core rod (1); andthe threaded connector (1.2) of the core rod (1) is in threaded rotary connection to the threaded hole (2.2) in the rubber plug (2). According to the medicine dissolving syringe provided by the invention, the rubber plug is designed into a form that the three rubber strips are arranged on the conical surface; the rubber plug and the core rod are creatively connected in an inner screw thread form;and the syringe needle is creatively designed into an embedded form.

Description

technical field [0001] The invention belongs to the technical field of drug dissolving equipment, and in particular relates to a drug dissolving syringe with an air source provided by an air source pump. Background technique [0002] At present, a small part of clinical infusion dispensing has realized intelligent dispensing. During the dispensing process, a drug dissolving handle and a syringe are required. The syringe is assembled at the front end of the dissolving device handle, and then the The source pump, through the blowing and pumping of gas by the air source pump, realizes the push-pull action of the rubber stopper without core rod or with core rod in the syringe, and the whole process of dispensing is completed after multiple pushes and pulls. [0003] In the prior art, the rubber stopper of the syringe is designed to be conical on one side in order to match the needle tube. When the air source pump initially absorbs the rubber stopper, the conical surface of the r...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the rubber stopper of the syringe is designed to be conical on one side in order to match the needle tube. When the air source pump initially absorbs the rubber stopper, the conical surface of the rubber stopper and the wall of the needle tube are fully and tightly fitted, and the needle is inserted After taking the medicine bottle, it is isolated from the air. In the process of the air source pump providing adsorption force to make the rubber stopper leave the needle tube wall, the air source pump needs to provide sufficient adsorption force to achieve the purpose of pumping liquid, and the existing technology The connection between the rubber plug and the core rod adopts a plug-in connection method. For the rubber plug with a core rod, the air source pump generates suction force on the core rod, and then drives the rubber plug to move through the core rod; multiple times of blowing and pumping air Finally, the connection between the core rod and the rubber plug will become loose or even disconnected. After loosening, even if the blowing force or suction force generated by the air source pump on the core rod is large, it will not be fully transmitted to the rubber plug effectively. , if it is disconnected, it will hardly be transmitted to the rubber stopper, which will affect the use of the entire dissolving and dispensing device

[0004] The needles and needles of the drug-dissolving syringes used in the prior art are all inserted and connected. Since the blowing and pumping force of the air source pump is very large, in the process of multiple blowing and pumping, if the needle tube and the needle The plug-in type is prone to loosening and leakage. In order to avoid the above phenomenon, it is necessary to develop a new connection method between the needle tube and the needle.

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