Surgical Light Airflow Circuit and Tilt Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Surgical lights in operating rooms create low pressure zones that lead to air turbulence, causing contaminants like bacteria, blood, and bone fragments to be circulated and dispersed over the surgical site, compromising sterility.
Innovation Solution
An airflow-channeling surgical light system with a fan and airflow circuit that directs filtered air around the lighting assembly, using a tilt detection unit to adjust airflow speed based on the lighting assembly's angle, and a protective insert with air passages to prevent contaminants from entering the airflow path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the surgical light is positioned directly over the surgical target zone, then the light can illuminate the surgical site effectively, but it blocks airflow and creates a low pressure zone that causes air turbulence and contaminant circulation
Solution Approach 1:
A removable protective insert is introduced as an intermediary component between the surgical light and the surgical site. This insert includes a transparent shield that protects the lighting assembly from contaminants and a support frame with air passages that allow filtered air to reach the surgical site, thus resolving the conflict between illumination and airflow blocking
Solution Approach 2:
The protective insert is divided into separate functional components: a support frame structure and a transparent shield. The support frame contains multiple air passages that segment the airflow paths, allowing controlled air distribution while the transparent shield provides continuous protection. This segmentation enables both illumination and protected airflow
2Reliability
If a protective insert with air passages is added to prevent contaminants from entering, then sterility is maintained, but the device complexity increases
Solution Approach 1:
The protective insert is designed as a disposable component that can be easily removed, cleaned, or replaced between surgical procedures. This approach maintains high sterility reliability without requiring complex reusable mechanisms with multiple cleaning and sterilization cycles, thus balancing reliability with manageable complexity
Solution Approach 2:
The protective insert serves multiple functions simultaneously: it protects the lighting assembly from contaminants, channels filtered air to the surgical site through its air passages, and maintains the structural integrity of the surgical light system. This multi-functionality reduces the need for additional separate components, thereby managing overall device complexity
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
The system reduces air turbulence and contaminant dispersion by creating a pressure zone underneath the lighting assembly, maintaining sterility and reducing the risk of contaminants reaching the surgical site.
Implementation Method 1
a fan configured to generate an airflow and an airflow circuit configured to direct the airflow around a periphery of the lighting assembly and out underneath the lighting assembly
Implementation Method 2
a tilt detection unit configured to detect a tilt angle of the lighting assembly and to generate a control signal to cause a speed of the airflow generated by the fan to change based at least on a detected change in the tilt angle
Data Source
AI summary
A light system includes a main body defining an internal chamber and a lighting assembly secured to the main body, wherein the lighting assembly comprises at least one light unit configured to emit light. The light system further includes a fan configured to generate an airflow and an airflow circuit configured to direct the airflow out of the main body of the lighting assembly. The light system also includes a tilt detection unit configured to detect a tilt angle of the lighting assembly and to generate a control signal to cause a speed of the airflow generated by the fan to change based at least on a detected change in the tilt angle of the lighting assembly.