Curved Microneedle Guide Tip for Scalp RF Penetration Accuracy
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Solution Overview
Problem
Conventional invasive RF treatment devices face challenges in securing visibility of the treatment portion on the scalp due to hair interference and suffer from insertion deviation or penetration depth deviation of microneedles on curved scalp surfaces.
Innovation Solution
A treatment tip for a handpiece with a guide part featuring tubular needle guides arranged in a curved shape, similar to a hair comb, to secure visibility and ensure accurate penetration of microneedles by guiding them through the hair and matching the scalp's contour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microneedles are used for invasive RF treatment on the scalp, then treatment effectiveness is improved, but visibility of the treatment portion is reduced due to hair interference
Solution Approach 1:
A transparent or translucent protective cover is introduced as an intermediary component that covers the microneedles during storage and transport while allowing visibility of the treatment area. The cover can be removed or retracted during treatment, providing both protection and visibility as needed without compromising treatment effectiveness.
2Ease of manufacture
If microneedles are arranged on the same plane, then manufacturing is simplified, but insertion deviation occurs on curved scalp surfaces
Solution Approach 1:
The microneedle array is designed with a curved surface configuration that matches the contour of the scalp. The protective cover and needle holder are shaped to follow the curved geometry, allowing all microneedles to penetrate at the correct depth and angle across the curved treatment area, eliminating insertion deviation while maintaining manufacturability through molded plastic components.
3Productivity
If microneedles penetrate through pressed hair, then treatment can proceed, but microneedle deformation occurs causing pain and reduced effectiveness
Solution Approach 1:
A hair removal or hair pushing mechanism is incorporated that preliminarily clears the hair from the treatment area before microneedle penetration. This may include a comb-like structure or air flow mechanism that removes hair from the path of the microneedles, ensuring smooth penetration without deformation and eliminating the need to choose between treatment continuity and needle integrity.
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 solution enables safe and precise microneedle penetration into the scalp, improving treatment accuracy and reducing side effects by securing visibility and minimizing insertion deviations.
Implementation Method 1
When the RF is applied to human tissues through the microneedle that plays a role as an electrode for providing RF stimuli, collagen components are firmly united in the dermal layer and the forming of new collagen is facilitated because friction heat attributable to the RF is generated within skin tissues around the microneedle.
Implementation Method 2
friction heat attributable to the RF is generated within skin tissues around the microneedle
Data Source
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AI summary
Disclosed is a treatment tip for a handpiece of an invasive RF treatment device. The treatment tip for a handpiece includes a needle part including a plurality of microneedles and a guide part including a plurality of tubular needle guides in accordance with the plurality of microneedles. The plurality of tubular needle guides is disposed in one or more lines. The plurality of microneedles is disposed within the plurality of tubular needle guides. A virtual line that connects the needle entry and exit ends of the plurality of tubular needle guides disposed in one line has curvature.