Multi-Phasic FUE Handpiece With Force-Adaptive Rotary Modes
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Solution Overview
Problem
The performance of Follicular Unit Extraction (FUE) surgery heavily relies on the operator's manual control of force exertion, which varies based on experience, leading to inconsistencies in extraction precision and graft quality due to differing skin thickness and density across the scalp.
Innovation Solution
A multiphasic FUE system with a force sensor and controller that adjusts rotary modes in real-time based on measured skin resistance, allowing for consistent extraction across varying skin layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual force control by operator is used, then flexibility in adapting to different skin characteristics is achieved, but extraction precision and graft quality become inconsistent due to varying operator experience
Solution Approach 1:
The system incorporates a force sensor that provides real-time feedback on the force being applied during extraction. The controller receives this feedback and automatically adjusts the motor's rotational speed and torque to maintain optimal extraction conditions across different skin types, eliminating the inconsistency caused by manual force control while preserving adaptability through automated force regulation.
Solution Approach 2:
The system performs self-adjustment of extraction parameters based on real-time force measurements. The automated control system monitors skin resistance and independently modulates motor output to maintain consistent extraction precision across varying skin characteristics, freeing the operator from manual force modulation while maintaining adaptability.
2Ease of operation
If manual force control by operator is used, then operation flexibility is maintained, but graft quality becomes inconsistent due to operator experience variations
Solution Approach 1:
The force sensor continuously monitors the extraction process and provides feedback to the controller, which automatically adjusts motor parameters to maintain consistent graft quality. This automated feedback loop ensures reliable, consistent results regardless of operator experience level, while the system remains easy to operate through simple activation without complex manual force modulation.
Solution Approach 2:
The system replaces manual mechanical force control with an automated electromechanical control system. The motor's rotational speed and torque are automatically regulated based on force sensor feedback, substituting the operator's manual force modulation with an automated system that ensures consistent graft quality while maintaining operational simplicity.
3Manufacturing precision
If automated multiphasic control is implemented, then extraction precision and graft quality consistency are improved, but device complexity increases
Solution Approach 1:
The motor serves multiple functions by operating in different rotary modes (rotation, oscillation, vibration) that are automatically selected and combined by the controller based on real-time force feedback. This multi-functionality allows a single motor to perform complex multiphasic extraction tasks, improving precision without proportionally increasing device complexity through additional motors or mechanisms.
Solution Approach 2:
The controller acts as an intermediary that processes force sensor data and translates it into appropriate motor control commands. This intermediary layer manages the complexity of coordinating multiple rotary modes and phases, allowing the system to achieve high extraction precision while keeping the overall device architecture manageable through centralized intelligent control.
4Ease of operation
If automated multiphasic control is implemented, then operator expertise requirements are reduced, but device complexity increases
Solution Approach 1:
The system performs self-adjustment of all extraction parameters based on real-time force measurements from the sensor. The automated controller independently manages motor speed, torque, and rotary mode transitions without requiring operator intervention or expertise in force modulation. This self-service capability dramatically reduces operator expertise requirements while the complexity is contained within the automated control system.
Solution Approach 2:
The force sensor provides continuous feedback to the controller, which automatically adjusts motor parameters to maintain optimal extraction conditions. This closed-loop feedback system eliminates the need for operator expertise in force control, as the system self-regulates based on real-time measurements, reducing operational complexity for the user while maintaining sophisticated control internally.
Data Source
AI summary
An extraction device, including a motor, a driveshaft operatively coupled to the motor and driven to rotate thereby, a punch tool directly coupled to a distal end of the driveshaft to rotate therewith, and arranged to be in physical contact with a skin layer during operation of the extraction device, a force sensor operatively coupled to the driveshaft to measure a force exerted thereupon by the skin layer, and a controller communicatively coupled to the motor and to the force sensor. The controller is configured to define multiple rotary modes and multiple multiphasic modes, each multiphasic mode including at least two rotary modes, receive a selection of a multiphasic mode, and provide, based on the selection, a control signal to the motor instructing the motor to operate in the multiphasic mode.