Vein viewing instrument and imaging method thereof

Abstract

The invention relates to a vein viewing instrument and an imaging method of the vein viewing instrument. The vein viewing instrument comprises an image collection system, a central control system and a projector. The image collection system and the projector are respectively electrically connected with the central control system. According to the vein viewing instrument, based on the time division multiplexing principle, a near infrared source is arranged in the projector, and the projector has both the light source function and the projection function, so that the size of the vein viewing instrument is reduced; light homogenizing systems such as a color splitting prism are further arranged in the projector, so that illuminance uniformity of projected near infrared light is good, the projected near infrared light can not exceed a preset projection light range, the use rate is improved, disturbance of the environment caused by leaking light is reduced, and power consumption is reduced.

Description

technical field [0001] The invention relates to an auxiliary medical instrument, more specifically, to a vein imaging device and an imaging method thereof. Background technique [0002] Venipuncture is an operation that needs to be frequently performed clinically, for example, when infusing a patient or drawing blood, it needs to be performed. In the traditional venipuncture operation, the doctor needs to find out the vein of the puncture site such as the back of the hand or the arm of the puncture target, and locate the target puncture vein before proceeding to the next step. Therefore, finding and locating the target vein plays an important role in the whole venipuncture procedure. However, in the actual operation process, due to the influence of factors such as the age, obesity degree, skin color of different puncture objects, or the surrounding light of the operating environment, it is difficult to find and locate the vein of the puncture target, resulting in the inabil...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that one or more external near-infrared light sources need to be installed in the vein imaging device using the principle of infrared vein imaging in the prior art, resulting in uneven near-infrared illumination and near-infrared light leakage. The surrounding environment causes interference, the overall utilization rate of near-infrared light is reduced, and the volume of the vein imaging device is increased. A vein imaging device and its imaging method are provided.

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