Torque Measurement Device with Replaceable Torsion Springs
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Solution Overview
Problem
Current magnetically induced torque measurement devices, particularly those using the torsional spring method, lack detailed descriptions of materials and methods for improving measurement accuracy, have limited torque range, and require multiple devices for different implant types, leading to restricted measurement capabilities and accuracy verification challenges.
Innovation Solution
A magnetically induced torque measurement device with a rectangular outer frame, transmission shafts, gear sets, a lifting platform, MRI-compatible camera, and detachable torsion springs, allowing for adjustable height and multiple elastic coefficient ranges, along with a method for verifying accuracy through angle measurement and rechecking with a torque screwdriver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the maximum deflection angle is specified in the standard, then the measurement device can be simple in structure, but the measurable torque range is limited
Solution Approach 1:
The patent applies the dynamics principle by making the torsion spring detachable and replaceable. This allows the device to adapt to different measurement ranges by changing the spring constant, effectively expanding the measurable torque range without complicating the overall structure. The dynamic configuration enables the same device structure to serve multiple measurement purposes.
Solution Approach 2:
The patent changes the parameter of the torsion spring (spring constant) by providing multiple springs with different constants. This parameter change allows the device to measure different torque ranges, transforming a single-range device into a multi-range measurement system while keeping the mechanical structure simple.
2Ease of operation
If manual angle adjustment is used, then the device operation is simple, but the measurement accuracy is limited
Solution Approach 1:
The patent introduces an MRI-compatible camera as an intermediary to capture and record the deflection angle. This intermediary device bridges the gap between simple manual adjustment and precise measurement, allowing operators to easily adjust angles while the camera provides accurate digital recording of the angle readings, thereby improving measurement precision without complicating operation.
Solution Approach 2:
The patent creates a visual copy of the angle measurement through photography. The MRI-compatible camera captures images of the angle scale, creating a permanent record that can be analyzed for precise angle determination. This copying mechanism enhances measurement accuracy while maintaining simple manual adjustment operations.
3Device complexity
If a single measurement device is used, then the device complexity is low, but the number of implant types that can be measured is limited
Solution Approach 1:
The patent makes the torsion spring configuration dynamic and adjustable. By allowing users to detach and replace torsion springs with different spring constants, a single device can adapt to measure various implant types with different torque characteristics, effectively expanding the device's versatility without requiring multiple fixed-configuration devices.
Solution Approach 2:
The patent designs the measurement device to perform multiple functions by incorporating replaceable torsion springs. This universal design enables one device to measure a wide range of implant types by simply changing the spring component, eliminating the need for multiple specialized devices and reducing overall system complexity.
4Reliability
If detailed material descriptions and accuracy verification methods are not provided, then the standard is concise, but measurement accuracy and accuracy verification are compromised
Solution Approach 1:
The patent implements feedback through the use of an MRI-compatible camera to capture and record angle measurements. This feedback mechanism provides visual confirmation and digital recording of the deflection angle, enabling verification of measurement accuracy. The camera creates a feedback loop that allows operators to verify readings and ensure measurement reliability without significantly increasing device complexity.
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 device can accurately measure magnetically induced torque across various implant types and sizes, reducing manual adjustment errors and expanding the measurable torque range, while ensuring MRI compatibility and cost-effectiveness.
Implementation Method 1
magnetically induced torque measurement device based on a torsional spring method for quantitative measurement of magnetically induced torque
Data Source
AI summary
The invention relates to the field of detection of implantable medical devices, particularly to magnetically induced torque measurement devices and method of implants in magnetic resonance imaging systems. The measurement device includes transmission shafts, gear sets, a knob, an indicator, a detachable torsion spring set, a loading tray, a protractor, and an MRI-compatible camera. The measurement device changes its measurement range by replacing the detachable torsion spring set, adjusts a height of the loading tray by a lifting platform, amplifies a rotation angle of the knob by the gear sets, and records deflection angles of the loading tray by the MRI-compatible camera. The measurement device provides the detachable torsion spring set, which is suitable for measuring most samples; and provides a height-adjustable loading tray, which can be applied to MR systems with different center heights.