Vein projector

Abstract

The invention discloses a vein projector. The vein projector comprises a shell assembly (1), a control circuit board (2), a computer data processing system (3), multiple infrared LEDs (5), a CCD camera (6) and a projector body (7). The infrared LEDs (5) are used for emitting infrared band light waves to the surface of the skin (20), by means of the difference between infrared light absorption rates of venae subcutaneae and adjacent tissue, the CCD camera (6) shoots the reflected infrared light, the computer data processing system (3) receives camera signals and transmits vein enhanced image signals to the projector body (7) after conducting digital processing and optimizing, the projector body (7) synchronously displays the venae subcutaneae in situ on the surface of the skin (20), which is used for finding veins, and visible light emitted by the projector body (7) and the infrared light taken by the CCD camera (6) are located on the same light path outside the vein projector. The vein projector can be widely applied to the field of medical apparatus and instruments.

Description

technical field [0001] The invention relates to a medical device, in particular to a vein projector. Background technique [0002] More than a hundred years ago, human medicine advanced to the point where vascular puncture was used to draw blood and transfuse blood, saline and other fluids. However, the key to implementing this medical technology is to find the blood vessels of the human body first before puncturing with a needle. blood vessels for subsequent treatment. When the puncture target is a child, it is difficult to see clearly because the blood vessels are thin, and when the puncture target is an elderly person who has been ill for a long time, it is also difficult to find a suitable puncture blood vessel because of multiple punctures or limited puncture sites and weak blood vessels. How to quickly and accurately find blood vessels in patients is very important. [0003] At present, there are mainly two methods for locating blood vessels clinically: visual method...

AI Technical Summary

Problems solved by technology

This generation of products has the following disadvantages: 1. Infants and young children cannot cooperate and cannot be used; 2. Children are unwilling to cooperate; 3. The penetration effect of adult palms is poor; High heat; 5. The effect of using in bright environment is poor

This generation of products has the following disadvantages: 1. The patient needs to grasp the infrared illuminant when performing venipuncture on the back of the hand, which may cause cross-infection or patients are unwilling to cooperate; 2. The doctor needs to observe the screen while performing the puncture, which is inconvenient to use ; 3. Resolution is limited

However, due to its inherent defects, it causes low resolution and slow frame rate, which affects the large-scale promotion of such products.

The current vein projection products generally use analog signal input and Lcos optical machine projection output. Although the cost can be greatly reduced, the display effect is not satisfactory because of the weak image algorithm.

Using analog video input reduces the resolution and frame rate, which will lead to rough and unsmooth edges of the veins, and serious delays when moving.

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