Multi-Wavelength LED Transillumination Device for Vein and Artery Detection

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Solution Overview

Problem

Current transillumination devices require multiple separate devices for examining veins and arteries at different depths, necessitating the use of distinct yellow-orange, amber, and green LED light sources, which is inconvenient and inefficient.

Innovation Solution

A portable transillumination device with a housing containing three LED light sources: yellow-orange (585-595 nm), amber (600-610 nm), and lime green (535-545 nm) LEDs, allowing for easy switching between and combination of light sources for superficial, deep vein, and artery examination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate transillumination devices are used for examining veins and arteries at different depths, then imaging capability for different structures is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improveimaging capabilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines three separate transillumination devices into one unified device. The housing contains three distinct LED light sources (yellow-orange, amber, and lime green) that can be selectively activated. This merging approach maintains the ability to examine different structures (veins and arteries at various depths) while eliminating the need for multiple separate devices, thereby reducing device complexity and improving ease of operation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The transillumination device is designed with multi-functionality to perform multiple examination types using a single device. The three different LED light sources enable the device to examine superficial veins, deep veins, and arteries respectively. A control mechanism allows selective activation of different light sources, making the device universal for various transillumination needs without requiring separate specialized devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If three separate transillumination devices are used for complete transillumination, then imaging capability is improved, but ease of operation deteriorates

Engineering Contradiction:

Improveimaging capabilityVSAvoidease of operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent merges three separate transillumination devices into one unified device. The housing contains three distinct LED light sources (yellow-orange, amber, and lime green) that can be selectively activated. This merging approach maintains the ability to examine different structures (veins and arteries at various depths) while eliminating the need for multiple separate devices, thereby reducing device complexity and improving ease of operation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables comprehensive vein and artery transillumination with a single device, reducing the need for multiple devices and enhancing imaging capabilities for both superficial and deep structures, including in neonates and darker-skinned patients.

Implementation Method 1

The first LED light source is composed of LEDs producing light having a wavelength in the range of from 585-595 nm, the second LED light source is composed of LEDs producing light having a wavelength in the range of 600-610 nm, and the third LED light source is composed of LEDs producing light having a wavelength in the range of 535-545 nm

Methodology Applied

Scientific EffectLight Emitting Diode: Light Emitting Diode

Data Source

PatentEP3703557B1Combination arterial and vein transillumination device using yellow-orange, lime green and amber LED lights

Publication Date: 2024.06.26 MULLANI NIZAR

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AI summary

A transillumination device having a yellow-orange light source, with LEDs having a wavelength in the range of 585-595 nm, preferably 590nm, an amber light source with LEDs having a wavelength of light in the range of approximately 600-610 nm, preferably 605 nm, and a lime green LEDs light source having a wavelength in the range of approximately 535-545 nm, preferably 540 nm. Yellow-orange LED light sources have been found to be beneficial for transillumination of superficial veins, amber light sources have been found to be beneficial for transillumination of deeper veins and lime green light sources have been found to be beneficial for transillumination of arteries.