Thermally Actuated Spinal Alignment Pump With Feedback Control
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Solution Overview
Problem
Conventional spinal alignment devices rely on manual or complex automated adjustments, which are prone to errors and catastrophic failures.
Innovation Solution
A spinal alignment system utilizing bidirectional thermally actuated actuators, such as crayon material or paraffin wax, with feedback mechanisms to ensure controlled and safe adjustments, incorporating rolling bladders and pumps to expand and retract based on temperature changes, and power supply circuitry for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual adjustment elements are used in conventional spinal alignment devices, then the device structure can be simple, but the reliability is reduced due to human error in making adjustments
Solution Approach 1:
The system uses feedback mechanisms where sensors detect spinal alignment status and automatically trigger adjustments through actuators, eliminating the need for manual operation while maintaining high reliability through self-correcting behavior
Solution Approach 2:
The system incorporates sensors that continuously monitor spinal alignment and provide feedback to a control system, which then automatically adjusts alignment elements to correct deviations, ensuring reliable operation without human intervention
2Reliability
If complex automated adjustment devices are used, then adjustment reliability improves, but the device complexity increases and susceptibility to catastrophic error increases
Solution Approach 1:
The system divides the spinal alignment function into multiple independent adjustable elements distributed along the spine, each capable of independent adjustment, reducing overall system complexity while maintaining reliability through distributed control
Solution Approach 2:
The system incorporates safety mechanisms and feedback controls that prevent catastrophic failures by detecting abnormal conditions and reversing or stopping adjustments before harmful effects occur, cushioning against potential errors
3Object-affected harmful factors
If thermally actuated components are used for spinal alignment, then the risk of catastrophic error is reduced through limited output, but the device complexity increases due to thermal control mechanisms
Solution Approach 1:
The system uses materials that undergo phase transitions (e.g., wax melting and solidifying) in response to temperature changes to drive mechanical adjustments, providing inherently limited and controlled output that prevents catastrophic error while using simple thermal control mechanisms
Solution Approach 2:
The system changes physical parameters (temperature) to control the state and properties of actuator materials, enabling safe and limited mechanical output through thermal control rather than complex mechanical or electrical actuation systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides safe and precise spinal alignment by limiting output errors, ensuring controlled expansion and retraction of bladders to adjust vertebrae spacing, reducing the risk of catastrophic failures.
Implementation Method 1
the first pump element expands when power is provided to the first pump element to increase pressure in the first volume
Implementation Method 2
a rolling bladder configured to expand from a retracted state to an extended state and from the extended state back to the retracted state; and a pump connected to the rolling bladder and configured to provide a working fluid to the rolling bladder
Data Source
AI summary
A spinal adjustment system including at least one thermally actuated pump element.