Surgical Microscope Head-Motion Camera Repositioning
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Solution Overview
Problem
Conventional surgical microscopes require users to constantly look through oculars, leading to fatigue and interrupted surgical flows due to the need to reposition the microscope with their hands, while newer models with cameras and displays still have limitations in camera positioning processes.
Innovation Solution
A surgical microscope system that includes a camera, a support with actuators, and a display, which detects the user's head movements and gaze direction to autonomously reposition the camera, allowing for controlled translatory and rotatory movements based on user input, such as voice commands or gestures, to improve camera positioning and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user manually repositions the microscope body using hands, then the microscope can be repositioned, but the surgical flow is interrupted and the user experiences fatigue
Solution Approach 1:
The microscope system performs self-repositioning by detecting user gaze direction and head movements, then automatically adjusting its position and orientation without requiring manual intervention. The system serves itself by using sensors to monitor user intent and actuators to execute positioning adjustments, eliminating the need for the user to physically move the microscope during surgery.
Solution Approach 2:
The manual mechanical repositioning operation is replaced by an automated control system that uses optical sensors to detect gaze direction and head movements, processes this information through a controller, and actuates the microscope positioning mechanism automatically. This substitutes the mechanical hand-operated system with an integrated sensor-controller-actuator system.
2Ease of operation
If the user constantly looks through oculars to reposition the microscope, then the microscope can be controlled, but the user experiences neck pain and fatigue
Solution Approach 1:
The microscope system monitors the user's gaze direction and head movements using sensors, then automatically adjusts its positioning based on this detected information. The system serves itself by interpreting user intent through gaze detection and executing appropriate positioning adjustments, freeing the user from the need to maintain a fixed viewing position through oculars.
Solution Approach 2:
The microscope positioning system dynamically adapts to user movements by continuously detecting gaze direction and head position changes, then adjusting the microscope's location and orientation in real-time. This dynamic response allows the user to move freely without experiencing fatigue, as the system automatically tracks and maintains optimal positioning.
3Ease of operation
If actuators are used to automatically position the camera, then repositioning is more convenient, but the camera positioning process can be improved further
Solution Approach 1:
The camera positioning system uses feedback from gaze direction detection and head movement sensors to continuously adjust camera location and orientation. The controller receives real-time information about user intent and modifies camera positioning accordingly, creating a closed-loop control system that refines positioning accuracy through continuous feedback rather than relying solely on pre-programmed movements.
Solution Approach 2:
The system performs preliminary positioning actions by detecting gaze direction and head movements before the user would need to manually adjust the camera. By anticipating user intent through early detection of gaze and movement patterns, the system proactively positions the camera in advance, smoothing out the positioning process and reducing the perceived complexity for the user.
Data Source
AI summary
A method of operating a surgical microscope includes detecting a direction of gaze of a user and detecting an amount of a movement of a head of the user. The movement of the head of the user is of a translatory movement type and a rotatory movement type. Amounts of movements or rotations of the camera or changes in the magnification are performed based on the detected amount of a movement of the head of the user.