Airbag type constant speed automatic injection device

Abstract

The invention provides an airbag type constant-speed automated injection device which comprises a positioning shell, a push module and a pressurizing module. The positioning shell comprises an upper cover and a lower cover, a needle hole is formed in the center of the upper end face of the upper cover, an exhaust hole is designed in the upper end face of the upper cover, a T-shaped groove is designed in the upper cover, and an air inlet hole is formed in the center of the lower end face of the lower cover. The push module comprises an exhaust tube, an exhaust switch and an ejector rod, the exhaust tube comprises a needle cylinder push tube and a piston handle push tube, a damping device is designed at the internal upper end of the piston handle push tube, a sliding device is designed at the internal upper end of the needle cylinder push tube, and the lower end of the exhaust tube is exposed through the air inlet hole of the lower cover. The airbag type constant-speed automated injection device can allow a patient to perform injection, and is convenient, rapid and low in cost.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an injection device. Background technique [0002] A syringe is a medical tool used for subcutaneous injection. By drawing the drug into the syringe, piercing the subcutaneous tissue of the human body through the injection needle, and pushing the drug into the subcutaneous, the purpose of subcutaneous injection treatment is achieved; the syringe barrel can be Plastic can also be made of glass, and often has graduations indicating the volume of liquid in the syringe; glass syringes can be autoclaved, but because plastic syringes are less expensive to dispose of, most modern medical syringes are It is made of plastic, which further reduces the risk of blood-borne diseases; most of the general syringes are operated by professionally trained medical personnel to draw and inject drugs. Only when the air is exhausted can the patient be injected; during the injection, the patient's injec...

AI Technical Summary

Problems solved by technology

[0002] A syringe is a medical tool used for subcutaneous injection. By drawing the drug into the syringe, piercing the subcutaneous tissue of the human body through the injection needle, and pushing the drug into the subcutaneous, the purpose of subcutaneous injection treatment is achieved; the syringe barrel can be Plastic can also be made of glass, and often has graduations indicating the volume of liquid in the syringe; glass syringes can be autoclaved, but because plastic syringes are less expensive to dispose of, most modern medical syringes are It is made of plastic, which further reduces the risk of blood-borne diseases; most of the general syringes are operated by professionally trained medical personnel to draw and inject drugs. Only when the air is exhausted can the patient be injected; during the injection, the patient's injection site needs to be disinfected with alcohol, and then the needle is accurately inserted into the patient's subcutaneous tissue. The force when pushing the liquid needs to be uniform, otherwise it will cause discomfort to the patient And the drug can not spread well under the skin; this kind of operation must rely on other people to operate on the patient, and some special patients, such as patients who need long-term insulin injections, usually need to use syringes frequently, so professional The injection by the injection personnel adds more burden to the patient; and a needle-free injector on the market allows the patient to perform self-injection, making the injection process more convenient, but the cost of this needle-free injector is extremely high, and Strict disinfection treatment must be carried out every time to prevent the syringe from being contaminated and infected, so there are defects

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