Magnetic Load Detection for Medical Device Movement Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical treatment and examination devices with movable components face challenges in accurately detecting varying patient loads, which can affect movement precision and potentially lead to collisions, as existing systems lack effective load measurement capabilities, especially when patients are repositioned or when components interact with obstacles.
Innovation Solution
A load detection system using a support that bends under load, generating a magnetic field which induces an induction current in coils due to field changes, allowing for precise measurement of the load through processing of the resulting measurement signal, enabling accurate weight determination and collision detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a movable device component is used to enable flexible positioning and movement in medical treatment or examination devices, then the device can adapt to different operational requirements and patient positions, but the varying load on the component affects movement precision and may lead to collisions
Solution Approach 1:
The patent applies preliminary action by detecting the load on the movable device component before movement occurs. The measuring device continuously monitors the load magnitude, and the control device uses this information in advance to adjust movement parameters or prevent collisions, thereby maintaining movement precision despite varying loads.
Solution Approach 2:
The patent implements feedback by using the measuring device to continuously monitor the load on the movable component and feeding this information back to the control device. The control device adjusts movement commands based on the detected load, creating a closed-loop system that maintains reliability and movement precision under varying conditions.
2Reliability
If a complicated collision monitoring device based on cameras is used to avoid collisions, then collision detection capability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the complex optical camera-based collision monitoring system with a simpler mechanical/electromagnetic measuring device. By using a measuring device that directly detects load forces on the movable component, the system achieves collision detection capability with significantly reduced complexity, eliminating the need for cameras and complex image processing.
Solution Approach 2:
The patent introduces a simple measuring device as an intermediary between the movable component and the control system. This measuring device directly senses load changes and provides immediate feedback to the control device, serving as an effective collision detection mechanism without the complexity of camera-based systems.
3Device complexity
If the load on the movable device component is not detected, then the device structure remains simple, but the varying load influences movement properties and may cause damage
Solution Approach 1:
The patent applies self-service by having the movable device component monitor its own load conditions through the integrated measuring device. The component detects its own load magnitude and provides this information to the control device, enabling self-protection against overload and collision damage without requiring external monitoring systems.
Solution Approach 2:
The patent implements preliminary action by detecting load changes before they cause damage. The measuring device continuously monitors the load on the movable component, and the control device uses this advance information to prevent harmful situations, ensuring device safety while maintaining structural simplicity.
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 precise load measurement and collision detection, allowing for appropriate adjustments in device operation and preventing damage from collisions by utilizing a magnetic field-induced measurement principle with ferromagnetic materials and coils strategically positioned to capture field changes.
Implementation Method 1
at least one coil that is assigned to the bending region and in which the magnetic field undergoing a change as a result of bending due to a load induces an induction current that serves as a measurement signal describing the load
Data Source
AI summary
A medical treatment or examination device includes at least one device component that may move relative to at least one other device component via a drive device. A measuring device is provided for detecting a load acting on the movable device component. The measuring device includes a support that bends due to the load. The support, at least in a bending region, has a section producing a magnetic field. The measuring device also includes at least one coil that is assigned to the section and in which the magnetic field undergoing a change as a result of bending due to a load induces an induction current that serves as measurement signal describing the load.