The strategic advantage of utilizing a treatment head with 36 non-insulated microneedles lies in its ability to deliver radiofrequency (RF) energy uniformly along the entire length of the needle, rather than confining it to the tip. This design ensures that as the needles penetrate the skin, thermal stimulation is applied simultaneously across the epidermis and multiple depths of the dermis, maximizing the activation of the skin's natural repair processes.
Core Takeaway While insulated needles target specific narrow layers, non-insulated needles provide comprehensive, volumetric heating throughout the tissue column. This full-depth stimulation is essential for efficiently treating deep dermal lesions, such as Striae Distensae (stretch marks), where repair is needed across the entire skin thickness.
The Mechanics of Non-Insulated Needles
Uniform Energy Release
The defining characteristic of non-insulated microneedles is the lack of a protective coating along the shaft.
In this configuration, the radiofrequency energy is released uniformly along the entire length of the needle. This contrasts with insulated needles, which restrict energy emission solely to the uninsulated tip.
Comprehensive Dermal Activation
Because the energy is distributed along the full penetration path, the thermal effect is not limited to a single depth.
This results in extensive thermal stimulation that spans from the superficial layers down to the deep dermis. This multi-layer approach is critical for activating the skin’s self-repair mechanisms more comprehensively than tip-only devices.
The Role of Density and Configuration
High-Density Micro-Pores
The specific configuration of 36 pins is designed to maximize treatment density.
During the reciprocating movements of the device, this high number of needles creates a dense network of micro-channels. This significantly increases the coverage rate of micro-injuries per pass, ensuring no area within the treatment zone is left untreated.
Depth and Efficiency
When combined with a needle length of roughly 1.5mm, this configuration ensures the tips penetrate the epidermis to reach the optimal dermal layer.
This produces sufficient stimulation to induce collagen remodeling. The 36-pin density improves overall treatment efficiency, allowing for faster procedures with higher distinct points of stimulation.
Understanding the Trade-offs
Volumetric vs. Targeted Heating
It is important to understand the functional difference between this approach and insulated alternatives.
Non-insulated needles heat the entire volume of tissue they penetrate, including the upper layers. While this is superior for treating full-depth scars or structural issues like stretch marks, it applies heat to the epidermis.
Specificity of Application
Because of this extensive heating profile, this configuration is specifically optimized for deep dermal lesions.
For conditions requiring repair primarily at the deep dermal level without affecting the upper layers, an insulated needle might be preferred. However, for structural remodeling where the entire skin architecture is compromised, the non-insulated 36-pin head provides the necessary intensity.
Making the Right Choice for Your Goal
To maximize the efficacy of radiofrequency skin repair, consider the nature of the skin lesion you are addressing:
- If your primary focus is deep structural repair (e.g., Stretch Marks): The non-insulated needle is superior because it stimulates the entire tissue column, ensuring comprehensive remodeling from the surface down to the deep dermis.
- If your primary focus is treatment efficiency: The 36-pin configuration provides the high-density coverage required to create sufficient micro-injuries and thermal coagulation zones in fewer passes.
By selecting non-insulated needles for these specific applications, you ensure the energy is not just delivered, but distributed where it can drive the most significant biological change.
Summary Table:
| Feature | 36 Non-Insulated Microneedles | Insulated Microneedles |
|---|---|---|
| Energy Release | Uniformly along the entire needle shaft | Confined to the needle tip only |
| Thermal Effect | Volumetric heating (Epidermis to Dermis) | Targeted heating (Specific depth) |
| Key Benefit | Comprehensive multi-layer activation | Protection of the superficial skin layer |
| Primary Application | Deep structural repair (e.g., Stretch Marks) | Localized dermal tightening |
| Coverage Density | High (36 pins for dense micro-channels) | Varies by tip configuration |
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At BELIS, we specialize in providing professional-grade medical aesthetic equipment designed exclusively for clinics and premium salons. Whether you are addressing deep structural skin issues with our Microneedle RF systems or seeking advanced solutions in Pico lasers, HIFU, and body sculpting (EMSlim, Cryolipolysis), our technology ensures superior clinical outcomes.
Why partner with BELIS?
- Advanced Precision: Our RF systems utilize optimized pin configurations to maximize collagen remodeling.
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Ready to upgrade your practice with the latest in laser and RF technology? Contact us today to receive a professional consultation and quote!
References
- Rehab Mohamed Sobhi, Mona Abd El Fattah Abd El Wahab. Comparative study between the efficacy of fractional micro-needle radiofrequency and fractional CO2 laser in the treatment of striae distensae. DOI: 10.1007/s10103-019-02792-7
This article is also based on technical information from Belislaser Knowledge Base .
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