Three-Axis Rotation Frame Layout for Independent Vestibular Therapy
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Solution Overview
Problem
Current systems for rotating the human body to diagnose and treat vestibular and related systems are limited as they cannot rotate independently around three perpendicular axes, restricting the degree and independence of rotation, which hampers effective therapeutic rehabilitation for conditions like brain injuries and neurodegenerative disorders.
Innovation Solution
A three-axis rotation system comprising a yaw frame within a roll frame, with a pitch frame contained within the yaw frame, driven by respective motors, allowing independent rotation around orthogonal pitch, roll, and yaw axes, and a unique drive system using belts and shafts to transmit mechanical power outside the rotational space, minimizing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-axis or two-axis rotation system is used, then the device complexity is reduced, but the adaptability and measurement precision for vestibular rehabilitation are insufficient
Solution Approach 1:
The patent implements a nested frame structure where the pitch frame is contained within the yaw frame, which is contained within the roll frame. Each frame rotates independently about its own axis, allowing three-axis rotation capability while organizing the complex system in a hierarchical, space-efficient manner that manages device complexity.
Solution Approach 2:
The rotation system is segmented into three independent rotational components (pitch, yaw, roll frames), each capable of independent rotation about orthogonal axes. This segmentation allows the system to achieve complex three-axis rotation adaptability while maintaining manageable complexity through modular design.
2Device complexity
If motors are located inside the rotational space, then the drive system is more compact, but electromagnetic interference increases
Solution Approach 1:
The patent extracts the motors from the rotational space and relocates them to the external support frame. The drive shafts pass through the rotational frames to transmit power from the externally located motors, eliminating electromagnetic interference with the subject while maintaining a compact overall system layout.
3Reliability
If rotation is limited to one or two axes, then the system is simpler to control, but the therapeutic effectiveness for neurological rehabilitation is reduced
Solution Approach 1:
The patent incorporates sensors to detect the orientation and position of the subject during three-axis rotation. This feedback is processed by a controller that adjusts the rotation parameters in real-time, ensuring therapeutic effectiveness while managing control complexity through automated closed-loop control.
Solution Approach 2:
The system implements dynamic control of three independent rotational axes with variable speeds and orientations. The controller can program complex rotation sequences that adapt to therapeutic requirements, maximizing rehabilitation effectiveness while using automated control to manage the complexity of coordinating multiple dynamic variables.
Data Source
AI summary
A system and method are disclosed that allows a practitioner to rotate a human subject in three different axes of rotation, independently from one another and without limitation on the degree of rotation, which allows for the treatment of various systems of the human subject.