Dermatome Width Plate Captures for Skin Graft Precision
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Solution Overview
Problem
Conventional dermatomes for harvesting skin grafts lack improvements in design and functionality, particularly in controlling the width of the skin tissue cut and preventing movement of components during the cutting process.
Innovation Solution
A dermatome design featuring a main body with captures that restrict movement of a bottom member, allowing for adjustable width cutting through a blade assembly, which includes a system for mounting the blade assembly to the main body and preventing movement in multiple directions, enabling precise control over the cutting width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional dermatomes are used for cutting skin tissue, then the basic skin graft harvesting function is achieved, but the width control precision and component stability during cutting are insufficient
Solution Approach 1:
The dermatome incorporates an adjustable width plate that can be repositioned along the blade assembly to dynamically change the cutting width during different surgical procedures. This dynamic adjustment mechanism allows the device to adapt to varying clinical requirements without requiring multiple fixed-width blades, thereby improving width control precision while maintaining reasonable device complexity
Solution Approach 2:
A width plate is introduced as an intermediary component between the blade assembly and the main body. This width plate acts as a mediator that defines the cutting width by contacting the tissue surface while allowing the blade to oscillate freely. The intermediary structure enables precise width control without directly complicating the blade mounting mechanism
2Reliability
If conventional dermatomes are used for skin graft harvesting, then the basic cutting function is achieved, but component movement and instability during the cutting process occur
Solution Approach 1:
The dermatome is divided into distinct segmented components: a main body, a blade assembly, and a width plate. Each component has a specific function and can be independently adjusted or replaced. The segmentation allows for stable component mounting through dedicated attachment mechanisms while maintaining ease of operation for adjustments and blade changes
Solution Approach 2:
The width plate and blade assembly incorporate self-aligning features that automatically position components correctly during assembly. The width plate has guide edges that self-align with corresponding grooves in the main body, and the blade assembly has mounting features that automatically orient themselves, reducing the need for complex alignment procedures and enhancing operational simplicity
3Manufacturing precision
If conventional dermatomes are used, then skin graft harvesting is performed, but the width of the skin tissue cut cannot be precisely controlled
Solution Approach 1:
The width plate is designed with multiple positioning holes or a continuous adjustment mechanism that allows it to be dynamically repositioned to different widths. This dynamic adaptability enables the dermatome to precisely control the cutting width for different surgical requirements while maintaining structural stability during the cutting process
Solution Approach 2:
The width plate serves multiple functions: it defines the cutting width, provides a stable base for blade mounting, and acts as a guide for the cutting process. This multi-functionality allows a single component to provide both precise width control and adaptability for various surgical applications, eliminating the need for multiple specialized tools
Data Source
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AI summary
A dermatome having a main body, a blade assembly and a bottom member, where the main body includes a bottom surface and at least one capture extending from the bottom surface. The bottom member may be inserted into the at least one capture and fastened to the main body, where the blade assembly may be mounted between the fastened bottom member and the bottom surface of the main body. The captures of the main body may limit the movement of the inserted bottom member in at least three general directions and the fastener may limit the movement of the bottom member in at least a fourth general direction.