Simple needleless injector

Abstract

The invention discloses a simple needleless injector and belongs to the field of medical equipment. The simple needleless injector includes an injector part (1) and a pressure providing part (2); theinjector part (1) is composed of a jacket (4), a core rod (5), a rubber plug (6), an injection head (3) and a liquid pumping head (22); the pressure providing part (2) is composed of a shell (23), a pressure shaft (24) and a spring (11). The needleless injector is characterized in that an omega-shaped stainless steel piece (13) of the injection head (3) is provided with one to ten micropores (15)with the diameter of 1-10 mu; the liquid pumping head (22) refers to a plastic injection needle; a spring (11) of the pressure providing part (2) refers to a pressure spring with the pressure more than 1kg; when the needleless injector is in use, the liquid pumping head (22) is used for pumping medicinal liquid, the injection head (3) is replaced, the injector part (1) is connected with the pressure providing part (2), the injection head (3) is aligned to the injector part, the spring (11) is triggered, the medicinal liquid is injected into muscle at high pressure, and injection is completed.The simple needleless injector is applied to intramuscular injection and can be applied to insulin and vaccine injection.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a syringe without an injection needle, and particularly relates to its principle and structure. Background technique [0002] In order to prevent cross-infection, the International Health Organization emphasizes safe injections. The existing safe syringes are varied and diverse, but they are all just adding some mechanisms to protect the injection needles after injections. The injection needles are still inseparable. . The real needle-free syringes do not need injection needles. Now only automatic insulin syringes are available in the market without injection needles, but they are expensive, and common people and patients cannot afford them. Contents of the invention [0003] The object of the present invention is to provide a simple syringe without injection needle, which is reliable in principle, simple in structure, easy to use, applicable to intramuscular injection...

AI Technical Summary

Problems solved by technology

[0002] In order to prevent cross-infection, the International Health Organization emphasizes safe injections. The existing safe syringes are various and varied, but they are all just adding some mechanisms on the basis of ordinary syringes to protect the injection needle after injection, and the injection needle is still inseparable.

The real needle-free syringes do not need injection needles. Currently, only automatic insulin syringes without injection needles are available on the market, but they are expensive, and ordinary people and patients cannot afford them.

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