Auxiliary image device for venous blood sampling

Abstract

The utility model relates to an auxiliary image device for venous blood sampling, which aims at solving the problem of complete and accurate coincidence of a graph acquired by a camera and a projected image. According to the technical scheme, the device comprises a rack part, a limb fixing part, an image acquisition projection part and an image processing center. The image acquisition and projection part comprises an infrared lens, a spectroscope, an infrared camera, a projector and an image acquisition and projection bracket, the infrared camera and the infrared lens form an image acquisition light path through the spectroscope, and the projector and the infrared lens form an image projection light path through the spectroscope; the image acquisition projection bracket is fixed on a rack in the rack part through the holder, the limb supporting plate is arranged on the image acquisition projection bracket, and the elastic binding belt is arranged on the limb supporting plate. The beneficial effects are that through the same light path and pan-tilt design of the infrared camera, the projector and the infrared lens, a graph collected by the camera is ensured to be completely and accurately overlapped with a projection image, and the projection image is ensured to truly express the blood vessel position of a limb.

Description

Technical Field

[0001] The utility model relates to a blood vessel imaging medical device, in particular to an auxiliary imaging device used for venous blood sampling. Background Art

[0002] Infrared rays can distinguish the red blood cells and surrounding tissues of subcutaneous veins or arteries according to their specific wavelengths. In modern medicine, infrared imaging is used to display the direction of blood vessels on the limbs, which is convenient for venous blood collection. For example, the CN104434033A near-infrared blood vessel display disclosed in the Chinese patent. The display uses a micro-mobile projection device to project the collected blood vessel graphic information onto the skin for display. In the prior art, how to ensure that the micro-mobile projection device projects the collected blood vessel graphic information onto the skin for display accurately requires a large number of technical and computational implementations in the prior art.

[0003] Based on the above infrared imaging mechanism, how to design a venous blood collection device for convenient clinical or field rescue use to solve the problem of blood collection from patients with deeper blood vessels. Utility Model Content

[0004] In order to solve the problem of completely and accurately overlapping the graphics collected by the camera with the projected image, ensure that the projected image truly expresses the blood vessel position of the limbs, and facilitate the use of veins, the utility model discloses an auxiliary imaging device for venous blood collection, which solves the difficulty of blood collection caused by patients with deep blood vessels.

[0005] The technical solution adopted by the utility model to achieve the purpose of the invention is: an auxiliary imaging device used for venous blood sampling, comprising: a frame part, a limb fixing part, an image acquisition and projection part and an image processing center.

[0006] The image acquisition and projection part includes: an infrared lens, a beam splitter, an infrared camera, a projector and an image acquisition and projection bracket. The infrared camera and the infrared lens form an image acquisition optical path through the beam splitter, the projector and the infrared lens form an image projection optical path through the beam splitter, the infrared camera is connected through the projector image processing center, and the infrared lens, the beam splitter, the infrared camera, the projector and the image processing center are arranged on the image acquisition and projection bracket;

[0007] The image acquisition and projection bracket is fixed on the rack in the rack part via a pan / tilt platform;

[0008] The limb fixing part comprises: a limb supporting plate and an elastic binding belt. The limb supporting plate is arranged on the image acquisition projection bracket, and the elastic binding belt is arranged on the limb supporting plate.

[0009] The beneficial effect of the utility model is that through the same optical path and pan / tilt design of the infrared camera, projector and infrared lens, the graphics collected by the camera are guaranteed to completely and accurately coincide with the projected image, and the projected image is guaranteed to truly express the blood vessel position of the limb.

[0010] The utility model is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] Attached Figure 2 This is the image processing block diagram of the utility model.

[0013] In the attached drawings, 1-1. infrared lens, 1-2. spectroscope, 1-3. infrared camera, 1-4. projector, 1-5. image acquisition projection bracket, 2. image processing center, 3. pan-tilt head, 4. rack, 5-1. limb support plate, 5-2. elastic binding belt, 6-1. infrared light source, 6-2. auxiliary light source. DETAILED DESCRIPTION

[0014] An auxiliary imaging device used for venous blood sampling comprises a frame part, a limb fixing part, an image acquisition and projection part and an image processing center.

[0015] The image acquisition and projection part includes: an infrared lens 1-1, a beam splitter 1-2, an infrared camera 1-3, a projector 1-4 and an image acquisition and projection bracket 1-5. The infrared camera 1-3 forms an image acquisition optical path with the infrared lens 1-1 through the beam splitter 1-2, the projector 1-4 forms an image projection optical path with the infrared lens 1-1 through the beam splitter 1-2, the infrared camera 1-3 is connected to the projector 1-4 and the image processing center 2 through the projector 1-4, and the infrared lens 1-1, the beam splitter 1-2, the infrared camera 1-3, the projector 1-4 and the image processing center 2 are arranged on the image acquisition and projection bracket 1-5;

[0016] The image acquisition projection bracket 1-5 is fixed on the frame 4 in the frame part via the pan / tilt 3;

[0017] The limb fixing part comprises: a limb support plate 5-1 and an elastic binding belt 5-2. The limb support plate 5-1 is arranged on the image acquisition projection bracket 1-5, and the elastic binding belt (5-2) is arranged on the limb support plate 5-1.

[0018] During use, the patient's limb is placed on the limb support plate 5-1 and tied with the elastic binding belt 5-2. The infrared camera 1-3 continuously collects photos through the infrared lens 1-1 and the spectroscope 1-2. The photos of the infrared light reflection information (with blood vessel images) collected by the infrared camera 1-3 for the first time are processed by the image processor and sent to the projector 1-4 and stored. When collecting again, the infrared light reflection information and the blood vessel pattern image information pre-projected by the projector 1-4 through the spectroscope 1-2 and the infrared lens 1-1 can be collected at the same time. Therefore, the images collected later can be compared with the images collected for the first time for error. The projection accuracy can be optimized by adjusting the position angle of the gimbal 3 and the image correction of the image processing center.

[0019] In the embodiment of the utility model, in order to adjust the wavelength of infrared light and increase the brightness of light, the image acquisition and projection bracket 1-5 is also provided with an infrared light source 6-1 and an auxiliary light source 6-2.

Claims

1. An auxiliary imaging device for venous blood sampling, comprising: The frame part, the limb fixing part, the image acquisition and projection part and the image processing center are characterized by: The image acquisition and projection part comprises: an infrared lens (1-1), a beam splitter (1-2), an infrared camera (1-3), a projector (1-4) and an image acquisition and projection bracket (1-5); the infrared camera (1-3) forms an image acquisition optical path with the infrared lens (1-1) via the beam splitter (1-2); the projector (1-4) forms an image projection optical path with the infrared lens (1-1) via the beam splitter (1-2); the infrared camera (1-3) is connected to the projector (1-4) and an image processing center (2); the infrared lens (1-1), the beam splitter (1-2), the infrared camera (1-3), the projector (1-4) and the image processing center (2) are arranged on the image acquisition and projection bracket (1-5); The image acquisition and projection bracket (1-5) is fixed on the rack (4) in the rack part via the pan / tilt platform (3); The limb fixing part comprises: a limb support plate (5-1) and an elastic binding belt (5-2); the limb support plate (5-1) is arranged on the image acquisition projection bracket (1-5); and the elastic binding belt (5-2) is arranged on the limb support plate (5-1).

2. The auxiliary imaging device for venous blood sampling according to claim 1, characterized in that: The image acquisition and projection bracket (1-5) is also provided with an infrared light source (6-1) and an auxiliary light source (6-2).

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