Tunable Light Source With Infant Safety Interlock
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Solution Overview
Problem
Current phototherapy treatments for infants, such as jaundice and wound healing, require precise control of light intensity, spectral range, and duration, but lack effective mechanisms to prevent bacterial growth and ensure safe usage, especially in hospital settings like bassinets.
Innovation Solution
An illuminated bassinet with a tunable light source and interlock system that emits anti-bacterial and therapeutic light, preventing bacterial growth while ensuring safe infant exposure, and a phototherapy system with sensors to adjust light based on jaundice levels and intensity, along with a surgical illuminator for concurrent emission of perception and therapeutic light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If anti-bacterial light is emitted to prevent bacterial growth, then bacterial suppression is improved, but safety for infant exposure deteriorates
Solution Approach 1:
The system performs preliminary action by emitting anti-bacterial light before the infant is placed in the bassinet. The control circuitry detects when the bassinet is empty and activates the anti-bacterial light source to sanitize the environment in advance, then automatically deactivates it when the infant is detected, thus preventing bacterial growth without exposing the infant to harmful radiation
Solution Approach 2:
The control circuitry acts as an intermediary between the anti-bacterial light source and the infant. It monitors the presence of the infant through sensors and mediates the operation of the light source, allowing anti-bacterial emission only when safe (when no infant is present), thereby resolving the conflict between bacterial suppression and infant safety
2Reliability
If therapeutic light is emitted to treat jaundice and promote wound healing, then treatment efficacy is improved, but control precision requirements increase
Solution Approach 1:
The light source is designed with multi-functionality to emit multiple wavelengths suitable for different therapeutic applications. The control circuitry can select and emit blue light (around 460-480 nm) for jaundice treatment and red light (around 630-680 nm) for wound healing, allowing a single device to perform multiple therapeutic functions without requiring separate light sources for each condition
Solution Approach 2:
The system implements parameter changes by adjusting the wavelength and intensity of the emitted light based on the specific treatment required. The control circuitry modifies the operational parameters of the light source to match therapeutic requirements, enabling precise control over light characteristics to optimize treatment efficacy while maintaining manageable device complexity
3Measurement precision
If light intensity and spectral range are precisely controlled to meet treatment requirements, then treatment precision is improved, but device complexity increases
Solution Approach 1:
The control circuitry incorporates self-service capabilities by automatically detecting treatment conditions and adjusting light parameters without requiring complex manual intervention. The system uses built-in sensors to monitor the bassinet environment and automatically configures the appropriate light wavelength and intensity based on detected conditions, thereby achieving precise control while minimizing the complexity of user interaction and control mechanisms
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 solution provides a safe and effective phototherapy system that adjusts light parameters to treat jaundice and promote wound healing while preventing bacterial growth, ensuring precise light delivery and enhanced surgical visibility.
Implementation Method 1
The electromagnetic radiation source is configured to emit electromagnetic radiation into the cavity
Implementation Method 2
the anti-bacterial light is chosen to damage bacteria
Implementation Method 3
Phototherapy facilitates the transformation of the compounds causing jaundice (i.e., unconjugated bilirubin) into compounds that are more easily excreted by the infant
Implementation Method 4
The sensor is configured to be worn by an infant or placed in a local environment of the infant and configured to detect in time a wavelength and an intensity of light incident on the sensor
Data Source
AI summary
An illuminated bassinet including a light source for delivering therapeutic light and anti-bacterial light, where an interlock prevents the anti-bacterial light from being emitted while an infant is located in the bassinet. Also, a surgical illuminator configured to concurrently or alternately emit different wavelengths of light for treating a physiological condition and for affecting perception of the surgical opening.