Venous Positioning Projector Infrared Vein Detection
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Solution Overview
Problem
In clinical settings, particularly when performing venipunctures on infants, obese individuals, or dark-skinned subjects, the difficulty in interpreting subcutaneous veins leads to increased pain and complications due to the low success rate of initial injections, resulting in issues like bruises, infections, and nerve damage.
Innovation Solution
A venous positioning projector is developed, incorporating an infrared light source module, a light splitting element, an infrared light image capture module, a processor, and a visible light projection module, which uses infrared light to detect veins and generate venous image data for real-time projection onto the skin, improving the visibility of blood vessels for medical staff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual inspection is used to locate veins, then the device complexity remains low, but the measurement precision of vein location is insufficient for dark-skinned or obese subjects
Solution Approach 1:
The patent introduces an infrared light source module and infrared light image capture module as intermediary components. The infrared light acts as a mediator to penetrate skin tissue and illuminate subcutaneous veins, allowing the capture module to detect vein locations that are invisible under normal visible light conditions. This resolves the contradiction by enabling accurate vein detection in difficult cases without requiring overly complex additional systems.
Solution Approach 2:
The patent replaces traditional mechanical visual inspection methods with an optical detection system using infrared light. Instead of relying on human eyes and visible light to locate veins, the system uses infrared illumination and capture modules to detect vein positions, thereby improving measurement precision for subjects where visual inspection fails.
2Measurement precision
If multiple separate devices are used for infrared detection and visible light projection, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent combines the infrared light detection function and visible light projection function into a single integrated device. The housing contains both the infrared light source module and capture module, as well as the visible light projection module, with shared optical paths and processing units. This merging reduces device complexity while maintaining high measurement precision through coordinated operation of all components.
Solution Approach 2:
The processor is designed to perform multiple functions: it processes infrared light image data to locate veins, controls the visible light projection module to project guidance patterns, and coordinates the operation of all modules. This multi-functionality allows a single device to replace what would otherwise require multiple separate specialized devices.
3Loss of information
If infrared light is used to detect veins, then the visibility of blood vessels improves, but the loss of time for image capture and processing increases
Solution Approach 1:
The system performs preliminary infrared illumination and image capture before the actual venipuncture procedure. The processor pre-processes the infrared images to identify vein locations and generate guidance patterns, so that when the medical professional needs to perform the injection, the vein location is already determined and displayed. This preliminary action reduces the time loss during the critical injection moment.
Solution Approach 2:
The infrared light source module continuously or periodically illuminates the target area during the procedure, and the capture module continuously captures images. The processor continuously processes the incoming image data and updates the guidance projection in real-time. This continuity ensures that vein visibility is maintained throughout the procedure without interruption, reducing time loss from repeated imaging cycles.
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 enhances the success rate of first venipuncture injections by providing clear, real-time visualization of blood vessels, reducing the risk of complications and improving the accuracy of needle placement.
Implementation Method 1
an infrared light source module (10) configured to output a first infrared light (L1) to a target surface (X)
Implementation Method 2
a light splitting element (11) disposed on a transmitting path of a second infrared light (L2) reflected by the target surface (X)
Implementation Method 3
The filter (120) allows the second infrared light (L2) to pass through
Implementation Method 4
The infrared light image capture element (121) is disposed on the transmitting path of the second infrared light (L2) passing through the filter (120) and receives the second infrared light (L2)
Implementation Method 5
The visible light projection module (14) is coupled to the processor (13) and generates a visible light (L3) based on the venous image data
Data Source
AI summary
A venous positioning projector includes an infrared light source module, a light splitting element, an infrared light image capture module, a processor, and a visible light projection module. The infrared light source module outputs a first infrared light to a target surface. The infrared light image capture module includes a filter and an infrared light image capture element. The light splitting element transmits a second infrared light reflected by the target surface to the filter. The infrared light image capture element receives the second infrared light passing through the filter. The processor generates venous image data according to the first infrared light and the second infrared light received by the infrared light image capture element. The visible light projection module generates a visible light based on the venous image data. The visible light is transmitted to the target surface through the light splitting element to generate a venous image.