Medicine Injecting Tip With Dynamic Pressure Control

The patent applies dynamic pressure control by alternating between negative pressure (suction) and positive pressure (injection) phases. During the suction phase, negative pressure is applied to flatten the skin surface and ensure uniform needle penetration depth. During the injection phase, positive pressure is applied to deliver medicine into the skin. This dynamic alternation resolves the contradiction by allowing both uniform penetration and effective medicine delivery at different time points.

The treatment device operates in periodic cycles, alternating between suction mode and injection mode. Each cycle includes a suction phase where negative pressure creates uniform skin contact and needle penetration, followed by an injection phase where positive pressure delivers medicine. This periodic action allows the system to achieve both uniform needle penetration and effective medicine injection without the drawbacks of continuous pressure application.

The patent introduces a suction-injection mechanism as an intermediary process to achieve deep medicine injection. The system first uses negative pressure (suction) to create uniform skin contact and facilitate needle penetration to the desired depth. Then, positive pressure is applied to push the medicine through the needle into the deep skin layers. This two-stage intermediary process enables deep injection that typical devices cannot achieve.

The patent employs pneumatic pressure control to achieve deep medicine injection. A fluid pressure source generates both negative pressure (for suction and uniform skin contact) and positive pressure (for medicine injection). The pneumatic system controls the pressure transitions, enabling the needle to penetrate deeply and deliver medicine to the target depth in the skin, overcoming the limitations of typical injection devices.