Length Adjustment Device for Finger Motion Rail
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Solution Overview
Problem
Existing therapeutic devices with finger motion rails struggle to adapt adequately to the differentiated anatomical shapes of fingers or thumbs of different patients, leading to deviations in automated finger movement from a natural movement.
Innovation Solution
A length adjustment device for finger motion rails, comprising an adjustment rail, a holding means movable along the rail, and blocking mechanisms that allow the holding means and finger motion rail to be automatically adjusted in length to fit individual anatomical dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual adjustment of finger motion rails is used, then device complexity is reduced, but time consumption for adjustment increases
Solution Approach 1:
The finger motion rail automatically adjusts its own length through the blocking mechanism that engages with the drive mechanism's movement range, eliminating the need for manual intervention and enabling self-adjustment to the optimal length
Solution Approach 2:
The blocking mechanism is pre-positioned along the adjustment rail, and during the drive mechanism's movement, it automatically engages at the appropriate position to determine the optimal length before therapy begins, preparing the device in advance
2Adaptability or versatility
If fixed length finger motion rails are used, then device complexity is reduced, but adaptability to different anatomies worsens
Solution Approach 1:
The finger motion rail transitions from a fixed length design to a dynamically adjustable length through the blocking mechanism that can be positioned at different locations along the adjustment rail, allowing adaptation to various anatomical configurations
Solution Approach 2:
The adjustment rail is divided into multiple discrete blocking positions that correspond to different optimal lengths, allowing the finger motion rail to be segmented into adjustable segments for customized fitting
3Productivity
If automated length adjustment is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The length adjustment function is merged with the existing drive mechanism by utilizing its movement range to automatically position the blocking mechanism, combining two functions into one integrated system
Solution Approach 2:
The drive mechanism serves dual purposes: both driving the finger motion rail during therapy and automatically positioning the blocking mechanism for length adjustment, making the mechanism multi-functional
Data Source
AI summary
A length adjustment device for a finger motion rail of a therapeutic device, a finger motion rail having such a length adjustment device, a therapeutic device having such a finger motion rail, and a method for adjusting the length of a finger motion rail on a therapeutic device for carrying out a continuous, passive and/or actively assisted movement of a finger and/or a thumb of a hand. The length adjustment device and adjustment method having a finger motion rail that is automatically moved along an adjustment rail by a drive on a therapeutic device and allows the finger motion rail to be fixed on the adjustment rail and therefore on the therapeutic device at a desired position in order to then be able to carry out a continuous, passive and/or actively assisted movement of a finger and/or of a thumb of a hand in a stable position.