Multi-Needle Injection Device for Simultaneous Dermal Filler Delivery
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Solution Overview
Problem
Conventional dermal filler procedures are limited in their ability to treat large surface areas of the skin effectively and efficiently, often requiring multiple injections and focusing on specific areas rather than providing overall skin improvement.
Innovation Solution
A device with a handpiece and removable head featuring a plurality of retractable needles and dosing chambers, allowing for controlled, superficial delivery of dermal filler gels or other compositions across a wide skin area, such as the face, neck, and décolletage, with the option to adjust needle depth and spacing for efficient and simultaneous injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional syringe and needle procedures are used, then injection precision for specific areas is achieved, but treatment efficiency for large surface areas deteriorates
Solution Approach 1:
The device divides the injection function into multiple independent needles (e.g., 5-21 needles arranged in arrays), allowing simultaneous injection at multiple points across large skin areas. This segmentation transforms a single-point injection tool into a multi-point treatment device, dramatically improving productivity for superficial skin treatments while maintaining manageable device complexity through modular needle cartridge designs.
2Area of stationary object
If multiple separate injections are performed for large skin areas, then coverage area is improved, but treatment time increases
Solution Approach 1:
The device merges multiple injection functions into a single operational unit. By arranging multiple needles in arrays (e.g., 5-21 needles) that can be activated simultaneously through a single trigger mechanism, the device delivers composition across wide skin regions in one action rather than requiring sequential injections, thereby expanding treatment area coverage while minimizing treatment time.
Solution Approach 2:
The device enables continuous treatment across large skin areas by maintaining needle arrays in contact with the skin surface and delivering composition continuously or in rapid succession across the treatment zone. This continuous action eliminates the need to lift and reposition the device between injection points, maximizing both coverage area and treatment efficiency.
3Reliability
If superficial injection is used for overall skin improvement, then skin health enhancement is achieved, but injection depth control becomes more challenging
Solution Approach 1:
The device incorporates needles of varying lengths within the same array to match different skin thicknesses and treatment requirements across various facial regions. This local quality approach allows the practitioner to select appropriate needle lengths for specific areas (e.g., shorter needles for thinner skin areas, longer needles for thicker areas), ensuring reliable superficial injection depth control while maintaining ease of operation through a unified device interface.
Solution Approach 2:
The device employs retractable needles that can be extended or retracted based on treatment needs, providing dynamic control over injection depth and safety. The needles can be retracted into the cartridge when not in use and extended only when needed, allowing precise control over the injection process while maintaining ease of operation through a simple trigger mechanism.
Data Source
AI summary
Skin can be treated by piercing skin with a plurality of needles of an injection device and ejecting a dose of fluid therethrough. The device can include a housing, a plunger disposed in the housing, a cartridge disposed in the housing, and one or more dosing chambers. The plurality of needles can be coupled to the housing and be in fluid communication with the cartridge. Advancement of the plunger can cause a dose of fluid to be ejected from the plurality of needles.