Surgical Microscope Head-Tracking Control for Robotic View Adjustment

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Solution Overview

Problem

Existing surgical microscope systems require complex manual adjustments through knobs and buttons, diverting the surgeon's attention and concentration, and lack intuitive control mechanisms that align with the surgeon's desired perspective changes.

Innovation Solution

A system that determines the angular orientation of the surgeon's head relative to a display or surgical site using camera image data, enabling intuitive control of the robotic adjustment system through head movements, gestures, and expressions, allowing for seamless perspective changes without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual control using knobs and buttons is used to adjust the surgical microscope, then the microscope can be precisely positioned, but the surgeon's attention and concentration are diverted from the surgical site

Engineering Contradiction:

Improveease of microscope controlVSAvoidtime and concentration required for control

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the mechanical control system (knobs and buttons) with an optical sensing system. Cameras track the surgeon's head position and eye gaze, and this information is processed to automatically generate control signals for the robotic arm, substituting manual mechanical operations with an automated optical-mechanical system.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service control where the microscope automatically adjusts itself based on the surgeon's natural head movements and gaze direction. The robotic arm autonomously positions the microscope according to the processed head tracking data, without requiring direct manual intervention from the surgeon.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If individual control of microscope position, angle, and functionality is provided through multiple controls, then precise adjustment is achieved, but the control mechanism becomes complex and time-consuming

Engineering Contradiction:

Improveadjustment capability of microscopeVSAvoidcomplexity of control system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system uses a single integrated control approach where head tracking data serves multiple functions simultaneously. The same head position and gaze information controls microscope positioning, angulation, and field of view adjustment, replacing multiple separate control mechanisms with a universal control interface.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple control functions (positioning, angulation, zoom) into a single unified control system driven by head tracking. Instead of separate knobs for each parameter, the system combines all adjustments into one automated process based on the surgeon's head movements and gaze direction.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If head movement tracking is used to control the microscope, then intuitive control is achieved, but the system must interpret the surgeon's desired perspective changes

Engineering Contradiction:

Improveintuitiveness of controlVSAvoiddifficulty of determining desired perspective

Core Design Contradiction:

Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The system implements feedback by continuously monitoring the surgeon's head position and eye gaze, processing this information to determine the desired field of view, and automatically adjusting the microscope accordingly. This closed-loop feedback mechanism translates natural head movements into precise microscope positioning.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary processing system that acts as a mediator between the surgeon's head movements and the microscope control. The camera system and processing algorithms serve as intermediaries that interpret head tracking data and convert it into appropriate control signals for the robotic arm, bridging the gap between natural movement and precise positioning.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3851896B1Apparatuses, methods and computer programs for controlling a microscope system

Publication Date: 2026.03.04 LEICA INSTRUMENTS (SINGAPORE) PTE LTD

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AI summary

Examples relate to apparatuses, methods and computer programs for controlling a microscope system, and to a corresponding microscope system. An apparatus for controlling a microscope system comprises an interface for communicating with a camera module. The camera module is suitable for providing camera image data of a head of a user of the microscope system. The apparatus comprises a processing module configured to obtain the camera image data from the camera module via the interface. The processing module is configured to process the camera image data to determine information on an angular orientation of the head of the user relative to a display of the microscope system. The processing module is configured to provide a control signal for a robotic adjustment system of the microscope system based on the information on the angular orientation of the head of the user.