Smart Comb Product Development
From MEMS atomization R&D to medical-grade production — a scalp care device reimagined.
OPD Design led the full smart comb product development for KimDai, a 15-year biotech leader. We replaced outdated roller-ball technology with MEMS atomization, achieving >90% delivery efficiency. This project covered industrial design, mechanical engineering, prototyping, and manufacturing preparation.
Project Background
As a 15-year biotech leader in scalp care, KimDai identified critical flaws in traditional roller-ball systems through quantitative lab tests and user behavior analysis:
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30% Active Ingredient Loss: Mechanical friction and oxidation in roller-ball structures.
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68.6% Absorption Rate: Rigid designs failed to adapt to scalp curvature.
OPD-Design’s medical-grade industrial design framework reimagined these challenges, targeting ＞90% delivery efficiency while transforming a clinical tool into a luxury self-care device.
This case demonstrates OPD Design’s end-to-end product development capabilities. We transformed a clinical scalp care tool into a luxury consumer device. Our team handled every phase — from technology research through MEMS integration, medical-grade prototyping, and mass production readiness.
Solution
TRIZ-Driven Mechanical Innovation
MEMS Atomization Core: Replaced roller-balls with microelectromechanical systems for 8μm mist precision (vs. 150μm droplets in traditional systems).
Self-Cleaning Mechanism: 20,000rpm titanium blade (Patent ZL2023XXXXXX) prevents clogs in high-viscosity formulas.
Ergonomic Scalp Mapping: 16-point pressure sensors adjust mist density for Asian scalp curvatures.
Step 1-Industrial Design
1. Cross-Disciplinary Technology Mapping
Using TRIZ innovation methodology, we integrated microfluidics, mechanical dynamics, and electronic engineering:
Mechanical Design Breakthrough: Replaced traditional roller-ball mechanisms with MEMS-based microelectromechanical systems;
Industrial Design Empowerment: Defined a 47° golden grip angle based on scalp curvature big data (100,000+ Asian user models).
2. Function-Form Integrated Design
Morphological Semantics: Inspired by “plant root systems,” the fractal flow channel housing symbolizes natural hair growth;
Mechanical Aesthetics Visualization: Sapphire glass windows expose precision atomization components to enhance technological trust.
Step 2-Mechanical Design
1. Atomization Module Innovations
Piezoelectric Ceramic Drive System:
Optimized vibration frequency (15kHz±2%) via ANSYS mechanical dynamics simulation to adapt to 20-500cP viscosity liquids;
Self-Cleaning Blade Mechanism (Patent No. ZL2023XXXXXX):
A 20,000rpm titanium alloy blade driven by a micro-motor eliminates high-viscosity liquid crystallization blockages.
2. Medical-Grade Mechanical Standards
Zero-Residue Delivery System:
3D topology-optimized titanium alloy atomization chamber with ±0.05mm wall thickness precision;
IPX7 Waterproof Structure:
Seamless housing via nano-injection molding, enduring 72-hour salt spray testing without performance degradation.
Step 3: Prototyping and Validation
Using our functional prototyping capabilities, we built iterative prototypes to validate the MEMS atomization system:
– **MEMS Performance Testing:** Validated 8μm mist precision across 20-500cP viscosity liquids
– **Self-Cleaning Mechanism Testing:** Confirmed 20,000rpm titanium blade prevents clogging after 1,000+ cycles
– **Ergonomic Validation:** Tested 47° grip angle with 50+ Asian users, confirming comfort and ease of use
– **Medical-Grade Testing:** IPX7 waterproof rating validated after 72-hour salt spray exposure
Step 4: Manufacturing Preparation
The final phase translated the validated design into production-ready assets:
– **DFM Analysis:** Optimized titanium alloy atomization chamber for mass production (±0.05mm wall thickness)
– **Nano-Injection Molding:** Developed seamless housing process for waterproof construction
– **Quality Control Framework:** Established testing protocols for MEMS performance, self-cleaning function, and ergonomic fit
– **Packaging Design:** Created retail-ready packaging that communicates medical-grade quality
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Start Your Product Development Project
The smart comb project demonstrates how OPD Design takes complex products from concept to medical-grade production. Whether you need MEMS integration, mechanical innovation, or full product development services, we can help.
Frequently Asked Questions
How long did the full product development take?
The complete smart comb product development cycle took approximately 8 months. This included technology research, MEMS integration, mechanical design, prototyping, testing, and manufacturing preparation.
What made this project "medical-grade"?
We applied medical-device standards throughout development: IPX7 waterproof construction, biocompatible titanium alloy components, ±0.05mm precision in the atomization chamber, and 72-hour salt spray testing. These standards ensure safety and reliability for consumer use.