Follicular Unit Graft-on-Demand Transfer for Faster Hair Transplantation
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Solution Overview
Problem
Conventional hair transplant surgeries are lengthy, labor-intensive, and prone to graft damage due to human handling, with significant time spent on harvesting and preparation, leading to potential donor area depletion and quality issues.
Innovation Solution
A graft-on-demand system using robotic harvesting and machine vision to map follicular units, delivering them directly to an implantation handpiece via tubing, eliminating intermediate handling and storage, and incorporating real-time monitoring and quality control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional manual harvesting and preparation methods are used, then grafts can be handled and prepared, but surgery time becomes excessively long (6-12 hours) and labor-intensive
Solution Approach 1:
The patent replaces manual mechanical handling of grafts with an automated robotic system that uses suction to transport grafts through tubing directly from the harvesting site to the implantation site, eliminating the need for manual sorting, counting, and transfer operations that previously required multiple technicians and extended surgery time
Solution Approach 2:
The patent introduces a tubing system as an intermediary medium to transport grafts directly from the donor site to the recipient site, bypassing the need for intermediate storage containers and manual transfer steps. The tubing acts as a continuous conduit that maintains graft viability while enabling automated high-speed transport
2Ease of operation
If multiple technicians handle and move grafts through sorting and storage processes, then grafts can be prepared and organized, but graft damage increases due to rough handling and exposure to air
Solution Approach 1:
The tubing system serves as a protected intermediary pathway that keeps grafts isolated from the external environment throughout transport. This eliminates exposure to air and prevents mechanical damage from manual handling, while still allowing efficient transfer from donor to recipient sites
Solution Approach 2:
The robotic system performs the entire graft transport process autonomously without requiring human intervention. The suction mechanism automatically captures, transports, and delivers grafts, eliminating the need for multiple technicians to manually handle and sort each graft
3Ease of manufacture
If traditional sorting and storage processes are used, then grafts can be organized by hair count, but significant time is lost in preparation before implantation can begin
Solution Approach 1:
The system performs preliminary organization of grafts by integrating the sorting function into the transport pathway itself. As grafts are suctioned through the tubing, they are automatically sorted and directed to appropriate implantation sites based on their characteristics, eliminating the need for separate pre-surgery sorting and storage steps
4Extent of automation
If robotic harvesting with machine vision is implemented, then graft-on-demand delivery is achieved, but device complexity increases
Solution Approach 1:
The robotic system integrates multiple functions into a single unified platform: machine vision for follicular unit identification, robotic positioning for precise harvesting, suction-based transport for graft delivery, and real-time monitoring for quality control. This multi-functionality reduces the need for separate devices and workflows
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly reduces surgery time to 1-2 hours, minimizes graft damage, and ensures uniform donor area depletion, while maintaining graft quality and efficiency.
Implementation Method 1
The suction device is connected to a source of vacuum and is configured to deliver the harvested follicular unit to the implantation handpiece through the tubing
Data Source
AI summary
The harvesting of hair for a hair transplant procedure with immediate placement of the hair grafts to the balding area, employs a hollow drill connected to a suction with an imaging system (containing one or more cameras) which permits alignment of the center of the cutting edge of the needle on or slightly offset from the axis of the hair within the follicular unit to be removed. This harvesting tool may be robotically controlled. As each follicular unit may have more than one hair, the surgeon controls the number of hairs in each graft he wishes to remove, excising the graft one at a time. A special FUE tool is used that excises the entire follicular unit with minimal residual attachments. The tool utilizes vacuum to facilitate complete excision. The graft that is excised is sucked though tubing and almost instantaneously delivered to an implanter held by the surgeon (Duplex Implanter) or by a robot. This graft on Demand system is controlled by the surgeon through a series of commands to the handpiece of the implanter for one, two, three or more hair grafts. The excision needle (punch) is placed to remove a hair graft with the chosen number of hairs, taken from an area which has been previously mapped out. When properly aligned, a follicular unit is removed without damaging critical anatomical portions of the follicles and it is delivered to the implanter at the command of the surgeon. In one embodiment, a movable x/y/z stabilizing gantry is employed to position the hollow needle in each instance which can be manually controlled by the surgeon, or robotically controlled with one or more robots. In another embodiment, a computer maps out the location of every graft within the surgical field of view, in part or in whole, and selects those follicles, minimizing the spacing left remaining after each excision while obtaining the number of grafts targeted by the surgeon. In still another embodiment, one or more robotic arms, controlled automatically by a controller or manually by a surgeon, operate graft excision instruments to facilitate speed and accuracy of the excision process.