Segmented Skin Tensioning Device for Hair Transplantation
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Solution Overview
Problem
Current hair transplantation methods, such as strip excision and Follicular Unit Extraction (FUE), are labor-intensive, time-consuming, and require high technical skill, with limitations in skin tensioning techniques that can lead to scarring and prolonged recovery times.
Innovation Solution
The development of a skin tensioning device with a multi-segment frame and adjustable body surface grabbers that can conform to curved body surfaces, providing customizable tension through flexible joints and securing members, allowing for precise application of tension during hair harvesting and implantation procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual skin tensioning with two fingers is used during FUE procedure, then the procedure can be performed with simple equipment, but the procedural time is excessive and labor-intensive
Solution Approach 1:
The skin tensioning device is designed to be self-adjusting through elastic recovery of the frame. When the frame is compressed to engage grabbers with the skin, releasing the compression allows the elastic material to automatically restore the frame to its original shape, maintaining consistent tension without requiring continuous manual adjustment. This self-service mechanism reduces procedural time while maintaining ease of operation.
Solution Approach 2:
The device utilizes changes in the physical state of the elastic frame material. By compressing the frame from its relaxed state to an engaged state, the material undergoes elastic deformation. This parameter change allows the frame to store and release mechanical energy, providing consistent tensioning force throughout the procedure without requiring continuous manual intervention, thereby improving productivity.
2Productivity
If automated skin tensioning systems are used, then procedural time is reduced, but the device complexity increases
Solution Approach 1:
The skin tensioning device employs a dynamic elastic frame that automatically adjusts its shape and tensioning force. The frame transitions between a compressed engaged state and a relaxed state, providing adaptive tensioning that conforms to different skin surfaces and procedural requirements. This dynamic behavior achieves automated tensioning with minimal structural complexity, reducing procedural time without excessive device complexity.
Solution Approach 2:
The invention replaces complex mechanical tensioning systems with an elastic material-based system. Instead of using motors, actuators, or complex linkages to maintain tension, the device relies on the inherent elastic properties of the frame material. This substitution of mechanical complexity with material properties achieves automated tensioning while keeping the device structure simple.
3Adaptability or versatility
If rigid frame tensioners are used, then the structure is simple, but the device cannot conform to curved body surfaces
Solution Approach 1:
The skin tensioning device utilizes a flexible elastic frame that can bend and conform to curved body surfaces. The elastic material allows the frame to adapt its shape to match the contours of different anatomical regions while maintaining structural integrity and tensioning capability. This flexible shell approach achieves adaptability to curved surfaces without requiring complex articulated or segmented structures.
4Manufacturing precision
If high tension is applied to the skin, then procedural precision is improved, but patient discomfort and scarring increase
Solution Approach 1:
The elastic frame provides continuous feedback through its elastic recovery force. As the frame compresses to engage the skin, the elastic material stores energy and automatically adjusts the tension to maintain optimal engagement without excessive force. This feedback mechanism ensures sufficient tension for procedural precision while preventing harmful over-tensioning that would cause patient discomfort or scarring.
Solution Approach 2:
The elastic frame inherently provides cushioning through its material properties. The elastic deformation of the frame during engagement absorbs and distributes forces, preventing concentrated high-stress points that would cause tissue damage or scarring. This beforehand cushioning effect protects the skin while maintaining sufficient tension for procedural precision.
Data Source
AI summary
Devices and methods for applying tension to an area of skin during various cosmetic or dermatological procedures, in particular for follicular unit removal and/or implantation in a hair transplantation procedure, are provided. The systems and methods utilize a segmented structure configured to conform to the body surface of various sizes, shapes and/or textures, thus allowing for customization in order to fit a variety of persons. In some embodiments, the tensioning device may be temporary secured, for example, to a patient chair.