Phototherapy System With Sensor-Based Light Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current phototherapy systems for treating neonatal jaundice in developing countries are costly and inefficient, often requiring high-powered light sources and complex electronics, which limits their availability and effectiveness, especially in home settings where they can be used to support mother-baby bonding and continuous treatment without interruption.
Innovation Solution
A phototherapy system with sensors and circuitry that detect light source parameters to modulate light generation, a light guide interfacing with the light source, an ambient light sensor, and a connector light sensor to ensure correct connection, and a light emitting pad with an identification tag for calibration, all designed to reduce power requirements and costs while maintaining optical efficiency, along with a soft cover to minimize light attenuation and a tracking device for logistical ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-powered light sources are used to achieve effective phototherapy, then optical efficiency is improved, but power consumption and system complexity increase
Solution Approach 1:
The patent changes the physical parameters of the light source by using multiple low-power LEDs instead of a single high-power source, and by optimizing the wavelength spectrum to match bilirubin absorption peaks. This parameter optimization achieves effective phototherapy with reduced power consumption and heat generation.
Solution Approach 2:
The light source is segmented into multiple individual LEDs distributed across the blanket surface, each operating at low power. This segmentation allows the system to achieve cumulative effective illumination while consuming less total power and generating less heat than a single high-powered source.
2Illumination intensity
If high-powered light sources are used to achieve effective phototherapy, then optical efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs simple, inexpensive LED components with straightforward driver circuits rather than complex high-power lighting systems. The design prioritizes simplicity and affordability, using off-the-shelf LED modules that reduce overall system complexity while maintaining therapeutic effectiveness.
3Ease of operation
If blanket phototherapy is used to allow continuous treatment with holding or swaddling, then ease of operation is improved, but cost increases due to fiber optic construction
Solution Approach 1:
The patent replaces expensive fiber optic construction with inexpensive LED modules and simple conductive traces printed or sewn into the blanket fabric. This substitution dramatically reduces manufacturing costs while maintaining the flexibility and ease of use required for blanket phototherapy.
Solution Approach 2:
The patent substitutes complex fiber optic light transmission mechanics with direct electrical connection through conductive traces on the blanket. This eliminates the need for fragile fiber optic cables, connectors, and alignment mechanisms, simplifying both manufacture and use.
4Device complexity
If simple construction with individual selectively-terminated fibers is used to reduce cost, then device complexity is reduced, but optical efficiency decreases
Solution Approach 1:
The patent optimizes the LED wavelength parameters to match the peak absorption wavelengths of bilirubin (around 460-480 nm for blue light). This parameter matching maximizes optical efficiency by ensuring the emitted light is most effectively absorbed by bilirubin molecules, achieving therapeutic effect with lower power requirements.
Solution Approach 2:
The patent distributes multiple LEDs with optimized wavelengths across the blanket surface, creating localized regions of high-intensity therapeutic light where needed. This local optimization ensures adequate illumination intensity at the infant's skin while maintaining overall system simplicity and low power consumption.
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 achieves lower power consumption, reduced complexity, and increased optical efficiency, enabling cost-effective and effective phototherapy in resource-constrained environments, allowing for home use and uninterrupted treatment while ensuring accurate light delivery and ease of equipment tracking.
Implementation Method 1
Exposing the infant's skin to certain types of light will quickly reduce the bilirubin to a safe level
Implementation Method 2
The phototherapy system has sensors for detecting parameters associated with light generation by a light source
Implementation Method 3
a light guide interfacing with a light source at a connection point
Data Source
AI summary
A phototherapy system having sensor(s) for detecting parameters associated with light generation by a light source and circuitry for modulating the light source based on the detected parameters. Also, a phototherapy system having a light guide interfacing with a light source at a connection point, an ambient light sensor, a connector light sensor for detecting (at the connection point) ambient light received by a light emitting pad that is directed into the light guide, and circuitry for determining whether the light guide is correctly connected to the light source based on a difference between the output of the ambient light source and the connector light sensor. Further, a phototherapy system including a light emitting pad having an identification tag and circuitry that modulates a light source based on the identification tag. Additionally, a phototherapy system including a casing encapsulating multiple light emitters and a light emitting pad.