Capsule Endoscope Guidance System with Dynamic Image Rotation
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Solution Overview
Problem
Existing capsule medical device guidance systems face challenges in accurately controlling the position and posture of capsule endoscopes within a subject, particularly in maintaining a consistent visual field orientation during operations, which can lead to user confusion and inefficient guidance.
Innovation Solution
The system incorporates a guidance unit with a magnetic field generation system and a display controller that adjusts the image display direction based on user input, ensuring the relation between the visual field change and operation input remains constant, regardless of the image orientation, using a first operation input unit for positional and postural control and a second input unit for image rotation, with notification icons for orientation verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the image display direction is fixed according to the imaging unit arrangement, then the control system is simple, but the user interface becomes confusing when the capsule posture changes
Solution Approach 1:
The display controller dynamically adjusts the image display direction based on the detected capsule posture and operation input direction. Instead of fixing the image orientation to the imaging unit arrangement, the system rotates the displayed image to maintain a consistent relationship between the operation input and the visual field change, making the interface intuitive even when capsule posture changes
2Ease of operation
If the image rotation is enabled to maintain consistent visual field orientation, then the ease of operation improves, but the device complexity increases due to additional control functions
Solution Approach 1:
The display controller receives feedback about the capsule posture from the posture detector and the operation input from the operation input device. Based on this feedback, the controller automatically calculates and applies the appropriate image rotation angle to maintain the consistent visual field orientation relationship, eliminating the need for manual rotation controls
Solution Approach 2:
The display controller acts as an intermediary between the capsule posture detection system and the image display system. It processes the relationship between operation input direction and capsule posture, and automatically adjusts the image orientation accordingly, shielding the user from the complexity of posture-controlled image rotation
3Measurement precision
If the visual field orientation changes with capsule posture, then the image accuracy reflects actual orientation, but the ease of operation deteriorates due to non-intuitive control response
Solution Approach 1:
Instead of allowing the visual field orientation to change directly with capsule posture (which would make control non-intuitive), the system inverts the approach by rotating the displayed image in the opposite direction of capsule posture changes. This maintains a constant relationship between operation input and visual field change direction, making control responsive and intuitive while still displaying accurate anatomical orientation
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
This approach allows for intuitive and effective guidance of capsule medical devices, ensuring accurate positioning and posture control while maintaining a consistent user interface, enhancing operational efficiency and reducing user confusion.
Implementation Method 1
a magnetic guidance device that applies a magnetic field to the magnet to guide the capsule endoscope according to a magnetic force
Data Source
AI summary
A capsule medical device guidance system includes: an imaging unit arranged inside a capsule medical device; a guidance unit configured to guide the capsule medical device inside a subject; a display unit including a screen is displayed; a first operation input unit configured to input first instruction information for changing at least one of a position and a posture of the capsule medical device; a second operation input unit configured to input second instruction information for rotating within the screen, the image displayed on the screen, around a center of the image; a guidance controller configured to control the guidance unit so as to change at least one of the position and the posture of the capsule medical device, based on the first instruction information; and a display controller configured to control a direction of the image displayed on the screen based on the second instruction information.