Nozzle device and minimally invasive injection device comprising the nozzle device

Abstract

The invention relates to a nozzle device and a minimally invasive injection device. According to one embodiment of the present invention, a nozzle device for a minimally invasive injection device includes: an outlet for forming a microjet of liquid; and a microscale injection part connected to the outlet and inserted to a predetermined depth in skin tissue .

Description

technical field [0001] The present invention relates to a nozzle device and a minimally invasive injection device, and more particularly, to a nozzle device and a minimally invasive injection device that can minimize pain and skin bleeding while minimizing liquid injection loss. Background technique [0002] In medical and cosmetic procedures, fluids are injected just below the surface of the skin. For example, injecting insulin under the surface of the skin or injecting a substance such as collagen under the surface of the skin for cosmetic purposes. [0003] The most common method of injecting fluids involves inserting an injection needle at a desired site to a desired depth. However, when using an injection needle, pain and bleeding are involved, and based on the user's skill level, the injection needle may be inserted improperly or incorrectly. In addition, in the case of improper insertion into the skin, severe damage to the skin tissue may occur, and the injured skin...

AI Technical Summary

Problems solved by technology

[0006] Therefore, it is very difficult for needle-free injectors to infiltrate the liquid uniformly, because the angle and distance between the skin surface and the hole from which the microjets are discharged, and the nature of the medicinal fluid to be infiltrated have a significant impact on the amount and depth of infiltration, So during the injection of medicinal fluids, it is difficult to control the loss and penetration depth

In particular, when highly viscous medicinal fluids are to be delivered, it occurs that microjets of sufficient velocity cannot be generated, and some of the penetrating microjets cannot diffuse into the skin and come out of the skin with subsequent microjets fired from the orifice. The jets collide in reverse, thereby further reducing the microjet velocity, resulting in a further decrease in skin penetration

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