Knee Joint Stimulation Device with Pivotable Support Plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional knee joint stimulation devices require precise positioning, which can be unstable and difficult to set correctly, especially for users with stiff joints, leading to undesirable movements and ineffective stimulation, necessitating professional assistance and inconvenient sharing.
Innovation Solution
A knee joint stimulation device with a pivotable center shaft, adjustable swing arm, and pivotable support plate unit that aligns the knee joint pivot point with the center shaft, allowing for stable flexion and extension movements without causing distortion or torsion, and can be adjusted for individual use with either one or both feet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the conventional device uses arc-like curved rails to enable knee joint movement, then the sole can follow extension and flexion from 90 degrees, but the knee position becomes unstable and wobbles in various directions when not properly positioned
Solution Approach 1:
The patent introduces a positioning guide structure that acts as an intermediary between the user's knee and the movement mechanism. This guide ensures the knee pivot point is correctly aligned with the arc center, mediating the interaction to prevent wobbling while maintaining full movement range
Solution Approach 2:
The device incorporates self-positioning features where the structure itself guides the knee into the correct position through geometric constraints and alignment features, eliminating the need for external assistance for proper setup
2Stability of the object's composition
If the device requires precise positioning of the knee joint near the arc center, then stable movement is achieved, but professional assistance is needed for setting which is costly and inconvenient
Solution Approach 1:
The device enables self-service operation through intuitive alignment features and self-positioning mechanisms that guide users to correct setup without requiring professional knowledge or assistance
Solution Approach 2:
The patent incorporates adjustable parameters such as movable support plates and adjustable swing arm lengths that allow users to adapt the device to different users and conditions, making setup simple and versatile
3Adaptability or versatility
If the device is set incorrectly, then the knee joint can move in various directions including distortion and torsion, but effective stimulation cannot be achieved
Solution Approach 1:
The positioning guide and alignment structures act as intermediaries that constrain movement to the correct plane and axis, preventing harmful distortion and torsion while maintaining the desired flexion-extension movement for effective stimulation
Solution Approach 2:
The device design incorporates preliminary constraints that prevent incorrect movement directions before they can occur, using geometric constraints and guide structures to block distortion and torsion pathways
Data Source
AI summary
A knee joint stimulation device may include a swing arm rotatably supported by a center shaft provided to a frame and hanging down from the center shaft, a motor configured to rotate the swing arm about the center shaft, and a support plate unit provided at a lower end of the swing arm and allowing a user in a sitting position to put his/her sole thereon. The support plate unit is pivotably attached on a support shaft that horizontally extends from the lower end of the swing arm across a central part of a bottom surface of the support plate unit.