Tendon Stripper With Movable Hook And Tapered Tip
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Solution Overview
Problem
Existing tendon strippers face challenges in efficiently separating tendons from adjacent muscle tissue, particularly in orthopedic procedures like ACL and UCL reconstructions, where precise and easy-to-use tools are needed to harvest tendons effectively.
Innovation Solution
A tendon stripper with a retention structure, such as a hook, and a tapered tip that moves distally to separate tendons from muscle tissue, allowing for easy capture and secure separation, and is designed for ease of use by either hand and on both sides of the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional tendon stripper design is used, then the structure is simple, but the ease of operation is reduced due to difficulty in capturing and separating tendons from muscle tissue
Solution Approach 1:
The tendon stripper is divided into distinct functional segments: a retention structure (hook) for capturing the tendon, a shaft for transmission, and a tip for separation. This segmentation allows each component to perform its specific function optimally, improving ease of operation while maintaining reasonable overall complexity
Solution Approach 2:
The retention structure is designed to be movable relative to the shaft, transitioning between open and closed positions. This dynamic feature enables easy capture of the tendon by opening the hook, secure retention when closed, and facilitates the separation process, significantly improving ease of operation
2Manufacturing precision
If a non-tapered tip is used, then the manufacturing is simpler, but the precision of separating tendon from muscle tissue is reduced
Solution Approach 1:
The tip is designed with a specific tapered geometry concentrated at the distal end, while the rest of the shaft maintains a simpler cylindrical form. This local quality change provides the precision needed for tendon separation at the critical tip area without significantly complicating the overall manufacturing process
3Adaptability or versatility
If a fixed retention structure is used, then the device is simpler, but the adaptability to various tendon sizes and orientations is reduced
Solution Approach 1:
The retention structure is designed to be movable relative to the shaft, transitioning between open and closed positions. This dynamic feature enables easy capture of the tendon by opening the hook, secure retention when closed, and facilitates the separation process
Solution Approach 2:
The hook-shaped retention structure is designed to accommodate tendons of varying sizes and orientations through its curved geometry and movable nature. The same structure can capture and retain different tendon types (such as hamstring tendons for ACL or wrist tendons for UCL), providing universal applicability across multiple orthopedic procedures
Data Source
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Figure 6A~8
AI summary
A tendon stripper according to an exemplary aspect of the present disclosure includes, inter alia, a shaft including a tip tapering to a point at the distal end of the shaft, and a retention structure moveable between an open position and a closed position to capture and retain a tendon relative to the tip. The tip arrangement increases the ease of separating a tendon from adjacent muscle tissue.