Capsule Medical Apparatus Reed Switch Magnetic Shielding
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Solution Overview
Problem
Conventional capsule-type medical apparatuses face challenges in efficiently powering and orienting internal components during storage and deployment, particularly due to magnetic field interference affecting the reed switch's operation and the need for accurate orientation recognition within the capsule's symmetry.
Innovation Solution
A capsule-type medical apparatus with a sealed container featuring a reed switch unit that controls power supply based on external magnetic fields and an orientation recognizing unit indicating the accommodation direction, ensuring stable operation and correct orientation within the capsule's rotational symmetry shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a permanent magnet is placed in the package to suppress electric power supply during storage, then power management reliability is improved, but the reed switch may be affected by magnetic field interference affecting operation stability
Solution Approach 1:
The patent extracts the permanent magnet from the capsule container and places it in the storage package instead. This allows the magnetic field to be used for power suppression during storage without interfering with the reed switch operation inside the capsule, resolving the contradiction between power management reliability and magnetic field interference.
Solution Approach 2:
The patent introduces a magnetic shield or magnetic isolation structure as an intermediary between the permanent magnet in the package and the reed switch in the capsule. This mediator allows the magnetic field to function for power control while protecting the reed switch from harmful magnetic interference.
2Ease of operation
If the capsule container is formed in a rotational symmetry shape for compact storage, then ease of storage is improved, but orientation recognition of internal components becomes difficult
Solution Approach 1:
The patent introduces asymmetric orientation recognition markers or features on the capsule container while maintaining the overall rotational symmetry shape. These asymmetric markers break the symmetry just enough to provide unique orientation identification without compromising the compact storage capability of the spherical shape.
Solution Approach 2:
The patent applies local asymmetric features (such as position markers, color codes, or shape variations) at specific locations on the otherwise symmetric capsule container. This allows the bulk of the container to maintain its compact symmetric form while localized areas provide the necessary orientation information.
3Reliability
If the reed switch is positioned to respond to magnetic field for power control, then power switch reliability is improved, but the reed switch may be incorrectly actuated by external magnetic fields during deployment
Solution Approach 1:
The patent positions the reed switch at a specific location on the capsule where it is shielded from external magnetic fields during deployment while still responsive to the magnetic field from the permanent magnet in the package during storage. The local positioning and shielding create different magnetic field conditions for storage versus deployment phases.
Solution Approach 2:
The patent uses preliminary magnetic shielding or positioning arrangements that prevent external magnetic fields from reaching the reed switch during deployment, while allowing the package's permanent magnet to effectively actuate it during storage. This preliminary protective arrangement prevents harmful external interference before it can affect the switch.
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
Enables reliable power management and orientation recognition, ensuring consistent operation and accurate imaging during deployment, while maintaining compactness and portability.
Implementation Method 1
a switch unit arranged in a substantially center of the sealed container, and controlling supply of electric power for driving the electric component according to action of a magnetic field from outside of the sealed container
Data Source
AI summary
A capsule-type medical apparatus includes a capsule-shape sealed container accommodating an electric component for executing a predetermined function; and a switch unit arranged in a substantially center of the sealed container, and controlling supply of electric power for driving the electric component according to action of a magnetic field from outside of the sealed container.