RF Microneedle Electrode Depth Control for Volumetric Tissue Treatment
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Solution Overview
Problem
Existing radio-frequency therapy instruments have poor therapy effects on target tissues with a long spreading area in depth, as they can only treat tissues at a specific penetration depth and fail to effectively target areas between the penetration depth and the skin surface.
Innovation Solution
A microneedle therapy control method and device that includes movable microneedle electrodes, a power supply module, and a linear driver, which allows the microneedle electrodes to move along the depth direction and continuously release radio-frequency energy, treating both the target tissue at the penetration depth and at smaller depths, thereby improving therapy effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the microneedle electrode is fixed at a specific penetration depth, then the therapy is simple to control, but the therapy area in depth direction is limited and cannot treat tissues at smaller depths
Solution Approach 1:
The microneedle electrode is designed to be movable along the depth direction rather than fixed at a single penetration depth. The linear driver enables dynamic adjustment of the electrode position, allowing it to move between different depths (e.g., from 3mm to 5mm) to treat tissues at various depths, thereby expanding the therapy area while maintaining ease of operation through automated control
Solution Approach 2:
The system adds the depth dimension to the therapy area by enabling movement of the microneedle electrode along the z-axis (depth direction). This transforms a two-dimensional surface treatment into a three-dimensional volumetric treatment, allowing the electrode to treat tissues at multiple depth levels (3mm, 4mm, 5mm) sequentially or simultaneously with different electrodes
2Area of moving object
If multiple microneedle electrodes are used to cover long spreading area, then the therapy coverage is improved, but the device complexity increases
Solution Approach 1:
The microneedle array is segmented into multiple independent electrodes (first microneedle electrode, second microneedle electrode, etc.) that can be independently controlled. Each electrode can be individually driven by the linear driver and powered by the power supply module, allowing selective activation of specific electrodes based on the treatment area requirements, thus achieving wide coverage without proportionally increasing device complexity
Solution Approach 2:
The linear driver and power supply module serve multiple functions: they can control any of the multiple microneedle electrodes, enable depth-direction movement for any electrode, and provide power to any selected electrode. This multi-functional design allows the system to achieve extensive therapy coverage using a standardized control architecture rather than requiring separate control mechanisms for each electrode
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method and device enhance the therapy effect by ensuring that not only the target tissue at the penetration depth is treated but also tissues at smaller depths, resulting in a wider therapy area and improved radio-frequency therapy outcomes.
Implementation Method 1
a power supply module configured to supply radio-frequency energy for the microneedle electrode
Implementation Method 2
supply radio-frequency energy for the microneedle electrode during a movement of the microneedle electrode within the movement range
Data Source
AI summary
Disclosed are a microneedle therapy control method and a microneedle therapy control device, and a radio-frequency (RF) microneedle therapy instrument. The microneedle therapy control method comprises the following steps: acquiring a piercing depth of a microneedle electrode; determining, according to the piercing depth of the microneedle electrode, a movement interval of the microneedle electrode in a length direction; sending a first control signal to a linear driver, so as to enable the linear driver to drive the microneedle electrode to move at a preset speed along the length direction within the movement interval; and sending a second control signal to a power module, so as to enable the power module to provide RF energy to the microneedle electrode during the movement of the microneedle electrode in the movement interval.