Eye-Tracking Medical Headlamp for Sterile Hands-Free Illumination

Solution Overview

Problem

Medical headlamps require manual adjustment by nurses to avoid contaminating patients, which can lead to contamination of surgical gloves when surgeons attempt to adjust them directly during procedures.

Innovation Solution

A medical headlamp system that includes a capturing unit to track the surgeon's eye locations, a control unit to analyze the captured image and calculate eye positions, and a driving unit to automatically adjust the lamp's direction to correspond with the surgeon's gaze, allowing for precise illumination without direct manipulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the surgeon directly adjusts the medical headlamp during surgery, then the desired location of the headlamp can be more promptly and precisely established, but the surgical gloves are contaminated

Engineering Contradiction:

Improveheadlamp adjustmentVSAvoidglove contamination

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The headlamp system performs self-adjustment by automatically tracking the surgeon's eye movements through the capturing unit and control unit, eliminating the need for manual adjustment during surgery. The lamp unit autonomously repositions the light source to illuminate the area the surgeon is looking at, allowing the surgeon to maintain sterile gloves while achieving precise illumination control.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The manual mechanical adjustment of the headlamp is replaced with an automated optical tracking system. The capturing unit detects eye positions, the control unit processes this information, and the driving unit automatically repositions the lamp unit, substituting the mechanical manual adjustment process with an automated electromechanical system that responds to visual input.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If a nurse manually adjusts the headlamp direction, then patient contamination is prevented, but the headlamp cannot be adjusted promptly to the desired location

Engineering Contradiction:

Improvepatient contaminationVSAvoidheadlamp adjustment time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The headlamp system performs self-adjustment by automatically tracking the surgeon's eye movements through the capturing unit and control unit, eliminating the need for manual adjustment during surgery. The lamp unit autonomously repositions the light source to illuminate the area the surgeon is looking at, allowing the surgeon to maintain sterile gloves while achieving precise illumination control.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements real-time feedback by continuously monitoring the surgeon's eye position through the capturing unit and immediately responding by adjusting the lamp unit's position. This closed-loop feedback mechanism ensures the headlamp illumination is constantly aligned with the surgeon's visual attention without requiring manual intervention or causing time delays.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If the headlamp is attached to the surgeon's head, then the lamp moves with the surgeon's head movements, but the lamp direction cannot be precisely controlled without manual adjustment

Engineering Contradiction:

Improvehead movement adaptationVSAvoidlight direction precision

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system implements real-time feedback by continuously monitoring the surgeon's eye position through the capturing unit and immediately responding by adjusting the lamp unit's position. This closed-loop feedback mechanism ensures the headlamp illumination is constantly aligned with the surgeon's visual attention without requiring manual intervention or causing time delays.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The headlamp system transitions from static attachment to dynamic adaptation by incorporating real-time eye tracking and automated adjustment. The lamp unit dynamically repositions itself based on the surgeon's gaze direction, combining the benefits of head-mounted portability with precise directional control through continuous motion adaptation.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8727558B2Medical headlamp for tracking eye locations

Publication Date: 2014.05.20 YESU HOSPITAL MANEGEMENT FOUND

AI summary

Provided is a medical headlamp including a main body put on a head, a driving unit installed and connected to one side of the main body and to provide a driving force, a location adjustment unit installed and connected to one side of the driving unit, a lamp unit installed and connected to one side of the location adjustment unit to move along with a movement of the location adjustment unit, and irradiate light onto one side of a front end thereof, a capturing unit installed and connected to one side of the main body and to capture eye locations, a control unit installed and connected to the driving unit and the capturing unit to analyze an image captured by the capturing unit, calculate the eye locations, and operate the driving unit according to the calculated eye calculation, and a power supply unit installed and connected to the control unit, the driving unit, and the lamp unit and to apply a current thereto.