I. Core Technical Principles

Near-infrared imaging (NIR Technology)

The absorption characteristics of hemoglobin: Deoxyhemoglobin in veins has a higher absorption rate for near-infrared light of specific wavelengths (typically 700-900nm) than that in surrounding tissues.

Reflection difference imaging: The device emits near-infrared light onto the skin, and the camera captures the reflection signal. Through algorithms, the veins are contrasted and enhanced with the surrounding tissues to form a clear image.

Multispectral imaging (optional technology)

Some high-end devices combine visible light and near-infrared light and adapt to different skin tones (such as patients with dark skin) through multispectral analysis.

AI image processing

Edge enhancement algorithm: Highlighting vein contours and reducing noise interference.

Depth prediction: Estimate the depth of veins through reflection intensity to assist in locating deep veins.



Ii. Enhanced Features of Desktop Design

Stable projection system

Fixed projector: Avoid the shaking of  handheld devices Vein Finder and precisely project vein images onto the skin surface (such as green/red contours).

Adjustable stand: Freely adjust the height and Angle to fit different parts such as the arm, back of the hand, and foot.

High-precision camera

Equipped with high-resolution sensors, it captures subtle vascular signals in real time and, in combination with the optical zoom function, magnifies local areas.

Environmental adaptability

Automatic calibration: Dynamically optimize imaging parameters based on ambient light and skin color.

Anti-interference design: Reduce the influence of surgical lamps or other light sources on imaging.



Iii. Work Process (Taking Blood Drawing as an Example)

Step 1: Patient localization

The patient placed his arm flat under the device and kept it stable.

Step 2: Quick scan

The device emits near-infrared light, generating a vein distribution map within 1-2 seconds and projecting it in real time.

Step 3: Vascular selection

Medical staff select the best puncture site (such as thick, straight, and unbifurcated veins) through screen or projection markers.

Step 4: Precise puncture

Puncture is completed under the guidance of venous projection, reducing the number of blind explorations.

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