Robotic Prosthesis Alignment Device for Autonomous Socket Adjustment
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Solution Overview
Problem
Conventional prosthesis alignment systems require manual adjustments and rely on torque sensors for optimal alignment, which can be cumbersome and lack automation for fine adjustments, especially in areas with limited professional coverage.
Innovation Solution
A robotic prosthesis alignment device with a translation assembly and angulation assembly, controlled by a computer or PDA, that enables precise translational and angular adjustments of the prosthesis socket relative to the shank and foot, using encoders and drivers to correlate positions and revolutions for automatic alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual alignment adjustments are used with torque sensors, then alignment accuracy can be achieved, but the alignment process becomes cumbersome and time-consuming
Solution Approach 1:
The robotic alignment device enables the prosthesis to self-align automatically through computer control. The system uses torque sensors to detect forces and a robotic mechanism with multiple actuators to autonomously adjust the prosthesis components to optimal alignment positions without requiring manual intervention for fine adjustments.
Solution Approach 2:
The patent replaces manual mechanical adjustment operations with an automated robotic system. The robotic alignment device uses computer-controlled actuators to perform translational and rotational adjustments, substituting the need for manual manipulation of set screws and mechanical components while maintaining measurement precision through integrated torque sensors.
2Ease of operation
If manual alignment adjustments are performed, then alignment can be achieved, but fine adjustments lack automation and precision
Solution Approach 1:
The robotic alignment device autonomously performs fine adjustments based on computer analysis of torque sensor data. The system automatically calculates optimal positions and executes precise rotational and translational movements without requiring manual intervention, thereby improving both ease of operation and fine adjustment precision.
Solution Approach 2:
The system continuously monitors forces through torque sensors and provides real-time feedback to the computer control system. This feedback loop enables the robotic mechanism to make incremental, precise adjustments until optimal alignment is achieved, ensuring both ease of operation and high precision for fine adjustments.
3Measurement precision
If professional alignment services are provided manually, then accurate alignment can be achieved, but access is limited in areas with insufficient professional coverage
Solution Approach 1:
The robotic alignment device enables end-users to perform accurate alignment themselves without requiring professional assistance. The computer-controlled system guides the alignment process automatically, making professional-grade alignment services accessible in remote areas with insufficient professional coverage.
Solution Approach 2:
The robotic alignment device acts as an intermediary between the user and the alignment process. It provides computer-controlled automation that bridges the gap between professional alignment services and end-user capability, delivering accurate alignment results without requiring direct professional intervention.
4Productivity
If automated robotic alignment is implemented, then alignment speed and precision improve, but device complexity increases
Solution Approach 1:
The robotic alignment device integrates multiple functions into a single system: torque sensing, computer control, robotic actuation for translational adjustment, and robotic actuation for rotational adjustment. This multi-functionality achieves high alignment speed while managing complexity through integration rather than separate components.
Solution Approach 2:
The patent combines the torque sensor system, computer control unit, and robotic adjustment mechanisms into an integrated alignment system. By merging these components into a coordinated system, the device achieves fast and precise alignment while controlling overall complexity through unified design and shared control architecture.
Data Source
AI summary
A robotic prosthesis alignment device is disclosed that may automatically move the alignment of a prosthesis socket in relation to a prosthesis shank. The robotic prosthesis alignment device provides automatic translation in two axes. The robotic prosthesis alignment device includes angulation mechanics that automatically provide for plantarflexion, dorsiflexion, inversion, and eversion of the foot and shank with respect to the prosthesis socket. A surrogate device is also disclosed that can replicate the alignment achieved with the robotic prosthesis alignment device.