Eye Accommodation Control for Hands-Free 3D Medical Navigation
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Solution Overview
Problem
Existing medical imaging devices and instruments lack intuitive and user-friendly control interfaces that allow for efficient 3D navigation and control without the need for manual input, particularly in medical environments where sterility and precision are crucial.
Innovation Solution
A device that generates control signals for medical instruments and imaging devices based on the accommodation state of the human eye, allowing hands-free operation by correlating eye accommodation with spatial positions, orientations, and movements, using a combination of accommodation and pupil orientation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If special 3D mice are used for 3D navigation control, then control precision is improved, but device complexity and ease of operation deteriorate due to considerable practice requirements and extensive preparation
Solution Approach 1:
The patent replaces the mechanical 3D mouse system with an optical/biological system based on eye accommodation detection. The radiation source emits light that reflects off the eye's lens, and the radiation detection unit measures the reflected light properties to determine accommodation state, thereby controlling the medical imaging device without requiring physical 3D mice or manual input devices.
Solution Approach 2:
The system utilizes the user's natural eye accommodation mechanism as the control interface. Instead of requiring the user to learn and operate a complex external device, the system detects the user's natural focusing movements and converts them directly into control signals for the medical imaging device, making the interface intuitive and requiring no special training.
2Measurement precision
If manual input devices are used for control, then control precision is improved, but loss of time increases due to the need for extensive preparation and practice
Solution Approach 1:
The system leverages the user's existing natural eye accommodation ability without requiring any additional training or preparation. The user's natural focusing movements are directly detected and translated into control commands, eliminating the time needed to learn and practice with specialized input devices while maintaining precise control capability.
3Ease of operation
If hands-free operation is implemented, then ease of operation is improved, but measurement precision deteriorates without specialized input devices
Solution Approach 1:
The patent substitutes the mechanical hand-operated input devices with an optical detection system that measures the physical properties of light reflected from the eye. The radiation detection unit precisely measures the reflected light characteristics to determine accommodation state, achieving high measurement precision through optical physics rather than mechanical input, thereby enabling accurate hands-free control.
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 intuitive and precise control of medical instruments and imaging devices by leveraging natural human eye accommodation, enhancing user interaction and maintaining sterility without manual input.
Implementation Method 1
The radiation detection unit is configured to detect response radiation reflected by the human eye, based on the emitted measurement radiation
Data Source
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Figure 3~5
AI summary
The invention provides a device and a method for generating a control signal for a medical instrument and/or a medical imaging device. The device comprises: an accommodation detection device (110) configured to detect an accommodation state (2) of a human eye (1); and an output device (120) configured to generate and output a control signal (79) for the medical instrument (200) and/or the medical imaging device (300) based on the detected accommodation state (2).