Artery blood sampling auxiliary device

Abstract

The invention relates to the field of medical auxiliary instruments, and provides an artery blood sampling auxiliary device which comprises a fixing part and a light-emitting part, the light-emitting part is provided with a light-emitting body capable of generating light with certain intensity in a certain direction, and the light-emitting part is installed on the fixing part in a mode of being capable of rotating relative to the fixing part, so that the irradiation direction of the light-emitting part can be adjusted; the number of the light-emitting parts is at least two, and different light-emitting parts can irradiate the same position by adjusting the irradiation directions of the light-emitting parts. According to different patients and different blood sampling positions, more light rays can be distributed near the artery by adjusting the irradiation direction of the light-emitting parts, the shadow of the artery is more obvious, the light-emitting parts are used, higher illumination intensity can be generated, the deeper artery can be checked, and the blood sampling effect is better. The arterial blood sampling device is particularly suitable for people who are difficult to determine the arterial position due to more body fat, and can be used for arterial blood sampling at different positions such as radial artery, brachial artery and even femoral artery.

Description

Technical Field

[0001] The present application relates to the field of medical auxiliary equipment, and in particular to an arterial blood sampling auxiliary device. Background Art

[0002] Arterial blood sampling is often used for blood gas analysis. By detecting indicators such as oxygen, carbon dioxide, and pH in the blood, the patient's respiratory function and acid-base balance are comprehensively evaluated, providing a basis for the diagnosis and treatment of diseases such as respiratory failure and acid-base imbalance. It is widely used in clinical practice. Common blood sampling sites for arterial blood sampling include the radial artery, brachial artery, and femoral artery. The radial artery is located on the outside of the wrist, superficial, easy to touch and fix, and is one of the most commonly used blood sampling sites. Although there are relatively few peripheral nerves and blood vessels, blind puncture without clear guidance can easily cause peripheral nerve damage or unsuccessful puncture. In addition, for some obese patients, the radial artery is located deeper and difficult to accurately locate. The radial artery is thin and easy to slip, and multiple punctures increase the patient's pain. The brachial artery is on the inner side of the upper arm, close to the median nerve, and is located deeper. The operation needs to be cautious to avoid nerve damage. The position of the brachial artery in obese patients is also difficult to accurately locate. The femoral artery is located at the base of the thigh, has a relatively large diameter, abundant blood flow, and a high success rate for blood collection. However, the femoral artery is close to the femoral vein, and it is easy to mistakenly enter the femoral vein when collecting blood from the femoral artery. In addition, the risk of infection is high when collecting blood from the femoral artery, so it is usually selected when other parts cannot be punctured. Therefore, accurate positioning of arterial blood collection is very important.

[0003] In view of the limitations of the above-mentioned different blood sampling sites of arterial blood sampling, using auxiliary devices to determine the location of blood vessels has become the key to improving the effect of blood sampling. There are two main types of existing blood vessel imaging devices. One type is directly irradiated by visible light. Although the cost is low, the penetration of visible light is limited and cannot irradiate deeper areas. It is generally used for intravenous injection on the back of the hand and cannot be used for deeper arterial imaging. The other type is detected by infrared light source, but the human eye cannot observe infrared light. It needs to be detected by an instrument and then projected onto the skin through a projection structure. The structure is complex and costly, so it has not been widely promoted.

[0004] The Chinese patent application with the patent number "CN114209276A" and the name "A Vascular Imager" discloses a vascular imager whose LED lamp beads are distributed in a ring shape, so that the light is relatively dispersed and is only suitable for viewing superficial blood vessels. If there is a lot of body fat, the effect is not ideal, especially for viewing the femoral artery.

[0005] The Chinese patent application with the patent number "CN106037674B" and the name "A vein imaging system based on hyperspectral imaging" discloses a vein imaging system, which has a complex structure and high cost.

[0006] The patent application of the Chinese patent number "CN106923792B" with the name "Reflective Ultra-Portable Human Superficial Venous Vessel Imaging Instrument" discloses a venous imaging instrument, which also has the situation that the imaging is not ideal when there is more body fat. This device is only suitable for superficial venous imaging and has a poor imaging effect on deeper moving models. Summary of the Invention

[0007] The present application provides an arterial blood collection assistance device, which realizes more accurate blood collection by improving the imaging effect.

[0008] According to the present application, an arterial blood collection assistance device is provided, including a fixing part and a light-emitting part. The light-emitting part is provided with a light-emitting body capable of generating light of a certain intensity in a certain direction. The light-emitting part is installed on the fixing part in a manner that can rotate relative to the fixing part, so that the irradiation direction of the light-emitting part can be adjusted. There are at least two light-emitting parts, and by adjusting the irradiation direction of the light-emitting parts, different light-emitting parts can irradiate the same position.

[0009] Compared with the prior art, the arterial blood collection assistance device of the present application has the following beneficial effects: For different patients and different blood collection positions, by adjusting the irradiation direction of the light-emitting part, more light can be distributed near the artery, making the shadow of the artery more obvious. Using multiple light-emitting parts can not only generate a greater light intensity, enabling deeper arteries to be seen, but also for the imaging of relatively shallow arteries, intermittent use can be achieved to avoid overheating and damage of the light-emitting body lamp beads. The arterial imaging is clearer, the puncture time can be reduced, the arterial blood collection efficiency can be improved, and it can be used for arterial blood collection at different positions such as the radial artery, brachial artery, and even the relatively shallow femoral artery.

[0010] In an implementable embodiment, the fixing part is provided with a plurality of semi-circular installation grooves or installation holes, and the installation grooves or installation holes can install the light-emitting part. Installing multiple light-emitting parts can make the light more uniform. The semi-circular installation grooves facilitate the rotation of the light-emitting part, and the rectangular installation holes can make the light-emitting part closer to the human skin, making the light more concentrated and obtaining a better arterial imaging effect.

[0011] In an implementable embodiment, the light-emitting part is provided with a focusing lens and a reflector so that the light-emitting part can generate parallel light. The parallel light is more concentrated and can irradiate a farther distance. The parallel light is convenient for controlling the direction and can irradiate the position of the artery from different angles. In the prior art, the light is divergent and cannot achieve imaging of deeper arteries. Only by using convergent light can a better imaging effect be obtained.

[0012] In an implementable embodiment, the light-emitting part includes a first light-emitting part and a second light-emitting part. The first light-emitting part can form a fan-shaped light source, which can have a relatively large irradiation range. Mainly, it can make the skin and near-epidermal tissues have a certain permeability under the action of light. The second light-emitting part can form a strip-shaped light source, and the irradiation distance of the strip-shaped light source is farther. By using the strip-shaped light source, it is possible to form light with a certain intensity near deeper artery blood vessels, which has better distinguishability and can make the artery better visualized. Especially in some cases, to ensure the imaging effect, it may be necessary to penetrate a relatively long distance.

[0013] In an implementable embodiment, the light-emitting part is fixed to the fixing part by a rotating positioning piece, which has a good fixing effect and can prevent the angle of the light-emitting part from changing randomly.

[0014] In an implementable embodiment, the light-emitting part is provided with a rotary switch and controls the brightness of the light-emitting body by rotation. Different depths of the artery require different brightness irradiations, so that a better imaging effect can be achieved.

[0015] In an implementable embodiment, the light-emitting part is provided with a mechanical rotary timing device. Since a relatively large light intensity is required, the power is relatively large. Setting up a heat dissipation structure has a high cost, and without a heat dissipation structure, it cannot work for a long time. By the mechanical timing device, the light-emitting body can be turned off regularly to avoid damage to the device caused by high temperature generated by long-term use of the light-emitting body.

[0016] In an implementable embodiment, the fixing part includes a fixing block and an elastic connecting block. The elastic connecting block is made of an elastic material and its two ends are connected to different fixing blocks. Different fixing blocks are connected by the elastic connecting block. The fixing block is provided with an installation groove for installing the light-emitting part. Different blood collection parts and different people have different shapes. Setting the elastic connecting block can meet the adaptation to different shapes, with more stable positioning and a better imaging effect.

[0017] In an implementable embodiment, the fixing part is provided with a blood collection frame, and the blood collection frame is provided with a blood collection bracket. The blood collection bracket can install a blood collection device. There may be visual differences at different angles. Setting the blood collection bracket can ensure that the plane of movement of the needle is in the same plane as the plane of the blood vessel, so that more accurate blood collection can be achieved.

[0018] In an implementable embodiment, the blood collection bracket is provided with a slidable track and can slide relative to the blood collection frame. The blood collection frame is provided with a laser strip emission lamp, so that the blood collection position can be better positioned. In theory, as long as the blood collection needle of the blood collection device and the laser strip are in the same plane, the accuracy of puncture can be ensured.

[0019] In an implementable embodiment, the fixing part is provided with a plurality of mounting chains. Adjacent mounting chains are hinged to each other through a hinge shaft so that the mounting chains can rotate relative to each other. An installation hole is provided in the center of the mounting chain, and a light-emitting part can be installed in the installation hole. The light-emitting part is provided with a housing. One end of the housing is provided with a second arc surface in the shape of a large semi-cylindrical surface. The installation hole is provided with a third arc surface and a fourth arc surface that match the second arc surface. The third arc surface and the fourth arc surface are respectively located on both sides of the installation hole. The mounting chain includes a first matching part, a second matching part, a first arc-shaped connecting arm, and a second arc-shaped connecting arm. The third arc surface is provided on one side of the first matching part close to the second matching part, and the fourth arc surface is provided on one side of the second matching part close to the first matching part. The two ends of the first matching part and the second matching part are connected by the first arc-shaped connecting arm and the second arc-shaped connecting arm. The first arc-shaped connecting arm and the second arc-shaped connecting arm are in a C shape, and the first arc-shaped connecting arm and the second arc-shaped connecting arm have a certain elasticity and can deform within a certain range, that is, the distance between the two ends of the C shape can change. In this way, the fixing part forms a chain structure and can be adjusted in length according to actual needs. The first arc-shaped connecting arm and the second arc-shaped connecting arm have elasticity, which can make the fixing part match different shapes at different positions, so that the fixing part is more stable in position when worn.

[0020] The method for assisting in radial artery blood collection by the above-mentioned arterial blood collection assisting device mainly includes the following steps: First, fix the fixing part of the arterial blood collection assisting device at a suitable position on the wrist; Secondly, set a fan-shaped light-emitting part in front of the radial artery side. On both sides of the fan-shaped light-emitting part and in front of the radial artery side, a second strip-shaped light-emitting part and a first strip-shaped light-emitting part are respectively set. The main light of the first strip-shaped light-emitting part irradiates on the area in front of the radius, and the main light of the second strip-shaped light-emitting part irradiates on the area in front of the ulna. Set a third strip-shaped light-emitting part behind the radius and the pubis. The light of the third strip-shaped light-emitting part irradiates between the radius and the ulna and emits from one side of the ulna towards the radius side; Thirdly, according to the preliminary imaging situation of the radial artery, adjust the positions and light intensities of each light-emitting part to achieve the best imaging effect; Finally, use a blood collection device to collect blood. This method can be suitable for most people, especially in the case where it is difficult to determine the position of the radial artery because the arm is relatively thick, which can greatly improve the blood collection efficiency and avoid causing greater harm to the patient due to multiple punctures.

[0021] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the following detailed description with reference to the accompanying drawings, the above and other purposes, features, and advantages of the exemplary embodiments of the present application will become easily understood. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, where: In the accompanying drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0023] Figure 1 A perspective schematic view of the arterial blood sampling assistance device according to Embodiment 1 of the present application is shown; Figure 2 A front schematic view of the arterial blood sampling assistance device according to Embodiment 1 of the present application is shown; Figure 3 A sectional schematic view of the arterial blood sampling assistance device according to Embodiment 1 of the present application is shown; Figure 4 A perspective schematic view of the arterial blood sampling assistance device according to Embodiment 2 of the present application is shown; Figure 5 A front schematic view of the arterial blood sampling assistance device according to Embodiment 2 of the present application is shown; Figure 6 A sectional schematic view of the arterial blood sampling assistance device according to Embodiment 2 of the present application is shown; Figure 7 A perspective schematic view of the light-emitting part according to the embodiment of the present application is shown; Figure 8 A perspective schematic view of the internal rotating circuit board structure of the light-emitting part according to the embodiment of the present application is shown; Figure 9 A schematic diagram of the light-emitting part distribution during radial artery blood sampling according to the embodiment of the present application is shown.

[0024] Description of the reference numerals in the figure: 1. Fixing part; 2. Light-emitting part; 3. Fixing belt; 4. Radius; 5. Radial artery; 6. Ulna; 7. Skin; 8. Subcutaneous tissue; 10. Installation groove; 11. First arc surface; 12. Light-transmitting hole; 13. Fixing block; 14. Elastic connecting block; 15. Blood sampling frame; 16. Blood sampling bracket; 17. Semi-cylindrical groove; 18. Track; 19. Emission lamp; 20. Housing; 21. Second arc surface; 22. Focusing lens; 23. Reflector; 24. Circuit board; 25. Lamp beads; 26. Rotating positioning piece; 27. Installation chain; 28. Hinge shaft; 29. Rotating timing device; 30. Rotating switch; 200. Gear; 201. First light-emitting part; 202. Second light-emitting part; 203. Rectangular part; 204. Semi-cylindrical part; 205. Battery; 206. Cylindrical lens; 207. Rotating shaft; 208. Teeth; 209. Control rod; 221. Sector-shaped light-emitting part; 222. Second strip-shaped light-emitting part; 223. First strip-shaped light-emitting part; 224. Third strip-shaped light-emitting part; 271. Installation hole; 272. Third arc surface; 273. Fourth arc surface; 274. First matching part; 275. Second matching part; 276. First arc-shaped connecting arm; 277. Second arc-shaped connecting arm; 281. Nut. Detailed implementation manners

[0025] To make the objectives, features, and advantages of this application more apparent and understandable, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.

[0026] As Figure 1 , Figure 3 and Figure 4 shown, the arterial blood sampling assistance device includes a fixing part 1 and a light emitting part 2. The light emitting part 2 is provided with a light emitting body capable of generating light of a certain intensity in a certain direction. The light emitting part 2 is installed on the fixing part 1 in a manner that can rotate relative to the fixing part 1, so that the irradiation direction of the light emitting part 2 can be adjusted. There are at least two light emitting parts 2, and by adjusting the irradiation direction of the light emitting part 2, different light emitting parts 2 can irradiate the same position. The fixing part 1 is provided with a fixing band 3, and the fixing band 3 can be an ordinary wristband whose length is adjusted by Velcro for fixation.

[0027] The light emitting part 2 can emit near-infrared light, red light, and some other visible lights. The human blood vessels have a strong reflection ability to blue light, but human skin and other tissues have a strong absorption of blue light. If only blue light is used to irradiate the skin, the blue light is absorbed by the skin and the position of the blood vessels can hardly be shown. The blood vessels have a strong absorption ability to red light and infrared light. If near-red light is used to irradiate the skin, in addition to forming shadows at the positions of the blood vessels, other positions will appear translucent under the light. In order to make the position of the arterial blood vessels more obvious, red light and yellow light can be increased and blue light can be reduced. The unnecessary light can be filtered through a filter, and the wavelength of the light can be controlled above 570 nanometers as much as possible. Red and yellow LED lamp beads can be preferably selected from the light emitting body. Since both arteries and veins will have a developing effect and it is difficult to distinguish them, but arteries generally pulsate regularly, so it can be confirmed whether it is an artery according to the pulsation situation. In addition, the approximate positions of each artery can be confirmed according to the bone positions.

[0028] Embodiment 1: As Figure 1 , Figure 2 and Figure 3 shown, the fixing part 1 is provided with a plurality of semi-circular mounting grooves 10, and the mounting grooves 10 can mount the light emitting part 2.

[0029] The semi-circular mounting groove 10 is provided with a first arc surface 11 in the shape of a semi-cylindrical surface. The radian of the first arc surface 11 is slightly larger than π, so that the opening position of the mounting groove 10 is slightly reduced. By using elasticity, it can be slightly enlarged when installing the light-emitting part 2. After installation, the light-emitting part 2 is directly limited by the opening structure, making both installation and disassembly very convenient. The radian of the first arc surface 11 can be set to 3.2 - 3.5. The light-emitting part 2 is provided with a housing 20, and one end of the housing 20 is provided with a second arc surface 21 in the shape of a large semi-cylindrical surface. The radian of the second arc surface 21 is larger than that of the first arc surface 11. The radian of the second arc surface 21 can be set to 4.5 - 5. The radius of the first arc surface 11 is the same as or slightly larger than that of the second arc surface 21. In this way, when installing, the first arc surface 11 fits with the second arc surface 21, and the light-emitting part 2 can rotate a certain angle in the mounting groove 10. To increase the resistance of rotation, a rubber structure can be locally arranged in the mounting groove 10 to increase the friction force.

[0030] As Figure 1 , Figure 2 and Figure 3 shown, in an embodiment, a rectangular light-transmitting hole 12 is provided at the bottom of the mounting groove 10, and the light emitted by the light-emitting part 2 passes through the light-transmitting hole 12 to reach the human skin. The light-emitting part 2 can be provided with a cylindrical lens 206, that is, a focusing lens 22, to refract the divergent light of the light-emitting body into parallel light.

[0031] In an embodiment, a plurality of light-emitting parts 2 are respectively inserted into the mounting groove 10. The number of the light-emitting parts 2 can be increased or decreased according to actual needs. The deeper the position of the artery, the more light-emitting parts 2 are required. Different people have different needs. In addition, different requirements can also be adapted by adjusting the brightness.

[0032] In an embodiment, the light-emitting part 2 is provided with a focusing lens 22 and a reflector 23 so that the light-emitting part 2 can generate parallel light. A convex lens can generate focused light, and the reflector 23 can increase the light intensity, making the lighting effect better. As Figure 3 shown, the focusing lens 22 can be a cylindrical lens 206, and the reflector 23 is also strip-shaped. The light-emitting part 2 is provided with a strip-shaped circuit board 24, and the circuit board 24 is provided with a plurality of lamp beads 25 arranged in a straight line. Under the action of the cylindrical lens 206, strip-shaped light can be generated.

[0033] In an embodiment, the light-emitting part 2 is fixed to the fixing part 1 through a rotating positioning piece 26. The rotating positioning piece 26 is provided with a thread to determine the position. The radius of the rotating positioning piece 26 is larger than that of the light-emitting part 2, so that the rotating positioning piece 26 directly abuts against the fixing part 1 to achieve limiting.

[0034] In an embodiment, the light-emitting part 2 is provided with a rotary switch 30 and controls the brightness of the light-emitting body by rotation. Different depths require different brightnesses, and the rotary switch 30 is more convenient to control.

[0035] In one embodiment, the light-emitting part 2 is provided with a mechanical rotation timing device 29. The rotation timing device 29 is linked with the light-emitting body switch and can automatically turn off the power supply of the light-emitting body at a certain time. The rotation timing device 29 controls the time length according to the rotation angle, which is very convenient to use.

[0036] In one embodiment, the fixing part 1 includes a fixing block 13 and an elastic connecting block 14. The elastic connecting block 14 is made of an elastic material and its two ends are connected to different fixing blocks 13. Different fixing blocks 13 are connected by the elastic connecting block 14. The fixing block 13 is provided with an installation groove 10 capable of installing the light-emitting part 2.

[0037] As Figure 1 、 Figure 2 and Figure 3 shown, as another embodiment, the fixing block 13 is made of a transparent material. In this way, there is no need to open a rectangular light-transmitting hole 12, and the light-emitting part 2 can directly pass the light through the fixing block 13 to reach the human skin. Since the refractive indices of different media are different, and the refractive index of a fixed object is usually greater than that of air, when the light-emitting part 2 rotates by a small angle, a large deflection angle can be achieved through the refraction of the fixing block 13, playing a role of angle magnification, similar to the role of a triangular prism. Therefore, the requirement for the rotation space of the light-emitting part 2 is smaller, more light-emitting parts 2 can be set, the depth of imaging can be increased, and it is suitable for more arterial blood collections. For example, the depth of femoral artery blood collection is relatively large, and more light-emitting parts 2 need to be set to achieve better imaging.

[0038] In one embodiment, the fixing part 1 is provided with a blood collection frame 15. The blood collection frame 15 is provided with a blood collection bracket 16. The blood collection bracket 16 can install a blood collection device, and the blood collection bracket 16 is provided with a semi-cylindrical groove 17 for installing a blood collection syringe.

[0039] In one embodiment, the fixing part 1 is provided with a fixing band 3. The fixing band 3 is provided with a magic tape. By adjusting the position of the magic tape, the effective length of the fixing band 3 can be changed to fix it to different sizes of positions, such as the wrist, arm, thigh or instep.

[0040] In one embodiment, the blood collection bracket 16 is provided with a slidable dovetail groove track 18 capable of sliding relative to the blood collection frame 15. The blood collection frame 15 is provided with a laser strip emitting lamp 19, which is arranged opposite to the blood collection bracket 16. The laser strip emitting lamp 19 can emit a long strip-shaped laser spot to irradiate on the human skin. First, adjust the laser strip to the corresponding position of the artery. When performing arterial blood collection, it is only necessary to ensure that the blood collection needle and the laser strip are in the same plane. In this way, the blood collection operation can be carried out with the light emitting part 2 turned off. Of course, in general, it is easier to perform blood collection with the light emitting part 2 turned on. However, if the power of the light emitting part 2 is relatively large, it cannot be turned on for a long time. For more complex situations, if the blood collection operation cannot be completed in a short time, the light emitting body of the light emitting part 2 can be turned off and the blood collection operation can continue. Embodiment 2: As Figure 4 , Figure 5 and Figure 6 shown, the fixing part 1 is provided with a plurality of mounting chains 27, which can be specifically set according to needs, generally at least four. The adjacent mounting chains 27 are hinged to each other through a hinge shaft 28 so that the mounting chains 27 can rotate relative to each other. A mounting hole 271 is provided at the center of the mounting chain 27. The mounting hole 271 is rectangular and can mount the light emitting part 2. The light emitting part 2 is provided with a housing 20. One end of the housing 20 is provided with a second arc surface 21 in the shape of a large semi-cylindrical surface. The mounting hole 271 is provided with a third arc surface 272 and a fourth arc surface 273 that match the second arc surface 21. The third arc surface 272 and the fourth arc surface 273 are respectively located on both sides of the mounting hole 271.

[0041] In one embodiment, the mounting chain 27 includes a first matching portion 274, a second matching portion 275, a first arc-shaped connecting arm 276, and a second arc-shaped connecting arm 277. On one side of the first matching portion 274 close to the second matching portion 275, there is a third arc surface 272. On one side of the second matching portion 275 close to the first matching portion 274, there is a fourth arc surface 273. The two ends of the first matching portion 274 and the second matching portion 275 are connected by the first arc-shaped connecting arm 276 and the second arc-shaped connecting arm 277. The first arc-shaped connecting arm 276 and the second arc-shaped connecting arm 277 are in a C shape. The first arc-shaped connecting arm 276 and the second arc-shaped connecting arm 277 have a certain elasticity and can deform within a certain range, that is, the distance between the two ends of the C shape can change. In this way, the distance between the third arc surface 272 and the fourth arc surface 273 also changes, facilitating the installation of the light-emitting portion 2 onto the mounting chain 27. The mounting chain 27 can adopt a chain structure similar to a watchband, and adjacent mounting chains 27 can be connected end to end. A certain gap is provided at the hinge position of the mounting chain 27, so that it can also rotate a small angle in the direction perpendicular to the axis, making it easier to be fixed to surfaces of different shapes. Different degrees of bending of the first arc-shaped connecting arm 276 and the second arc-shaped connecting arm 277 can also change the lengths on both sides, making it easier for the mounting chain 27 to be fixed on the surface of a conical structure. With the mounting chain 27 of this structure, there is no need to set up a blood collection frame 15 anymore. Making the mounting chain 27 larger provides enough space for blood collection.

[0042] In one embodiment, the light-emitting portion 2 includes a first light-emitting portion 201 and a second light-emitting portion 202. The first light-emitting portion 201 can form a fan-shaped light source, and the second light-emitting portion 202 can form a strip-shaped light source. The fan-shaped light source is relatively simple. Ordinary light sources have a certain divergence, that is, they are close to a fan-shaped light source. Using a reflector 23 can also make the light more concentrated and directed in a certain direction. The strip-shaped light source requires the reflector 23 or the focusing lens 22 to have a light-gathering function to form a large number of parallel lights. At least the divergent light needs to be focused onto a straight line, and this can also be achieved by using a cylindrical lens 206. The fan-shaped light source is more divergent than the strip-shaped light source, and the fan-shaped light source can also be directly replaced by an ordinary light source. In one embodiment, to ensure hygiene, the fixing portion 1 is made of a plastic material and can be discarded after one-time use. The outside of the light-emitting portion 2 is provided with a transparent shell, which can be used once, and the light-emitting portion 2 can be reused.

[0043] In one embodiment, a nut 281 is provided on the hinge shaft 28. By adjusting the nut 281, the resistance to relative rotation between the mounting chains 27 can be controlled. Increasing the resistance can make the mounting chain 27 fixed at a certain angle without change, thus facilitating the adjustment of the incident angle and position of the light-emitting portion 2 to ensure a better imaging effect.

[0044] As Figure 6 、 Figure 7 and Figure 8As shown, in one embodiment, the housing 20 of the light-emitting part 2 includes a rectangular part 203 and a semi-cylindrical part 204. A battery 205 is provided in the rectangular part 203, and a circuit board 24 and lamp beads 25 are provided in the semi-cylindrical part 204. A cylindrical lens 206 is provided below the lamp beads 25. The circuit board 24 is arranged on a plane parallel to the XY plane. A rotating shaft 207 is provided at the center behind the circuit board 24 so that the circuit board 24 rotates around the rotating shaft 207 in the Z-axis direction perpendicular to the circuit board 24. Gear teeth 208 are provided at the edge of the circuit board 24, and the gear teeth 208 are matched with the gear 200 of the control rod 209 so that the rotation of the control rod 209 can drive the circuit board 24 to rotate around the rotating shaft 207. In this way, the light angle of the light-emitting part 2 can be adjusted, so that the light can irradiate on the artery position as much as possible.

[0045] As Figure 9 shown, in one embodiment, the figure shows a schematic cross-sectional view of the wrist. The radius 4 is on the left side, the radial artery 5 is below the left side, and the ulna 6 is on the right side. The double arrow represents the emission of parallel-shaped light. The skin 7, subcutaneous tissue 8, muscle tissue, connective tissue, etc. have a relatively small absorption effect on red light. Therefore, the red light is emitted as much as possible in the direction of the radial artery 5 or behind the radial artery 5. The radial artery 5 has a relatively strong absorption effect on red light. Therefore, the red light reflected at the position of the radial artery 5 is small, while the infrared light reflected or scattered by other subcutaneous tissues 8 is relatively strong. In this way, the shadow of the radial artery 5 can be displayed at the position of the radial artery 5. For relatively obese people, multiple light-emitting parts 2 may be required to irradiate the radial artery 5 from different angles. For example, a light-emitting part 2 can also be provided in the gap between the radius 4 and the ulna 6. Only the parallel light of the present application can have relatively strong light pass through the gap between the radius 4 and the ulna 6 to achieve a better imaging effect. The basic unilateral scattered light in the prior art is difficult to achieve a deep artery imaging function, and the deep artery imaging can be achieved according to the method of the present application.

[0046] As Figure 9As shown, the method for collecting blood from the radial artery 5 mainly includes the following steps: First, fix the fixing part 1 of the arterial blood collection auxiliary device at a suitable position on the wrist; Second, set a fan-shaped light-emitting part 221 in front of the radial artery 5 on the side. On both sides of the fan-shaped light-emitting part 221 and in front of the radial artery 5 on the side, set a second strip-shaped light-emitting part 222 and a first strip-shaped light-emitting part 223 respectively. The main light of the first strip-shaped light-emitting part 2 irradiates the area in front of the radius 4, and the main light of the second strip-shaped light-emitting part 222 irradiates the area in front of the ulna 6. Set a third strip-shaped light-emitting part 224 behind the radius 4 and the pubis. The light of the third strip-shaped light-emitting part 224 irradiates between the radius 4 and the ulna 6 and emits from one side of the ulna 6 towards one side of the radius 4; Third, according to the preliminary imaging situation of the radial artery 5, adjust the positions and light intensities of the light-emitting parts 2 to achieve the best imaging effect; Finally, use the blood collection device to collect blood. This method can be suitable for most people, especially in the case where it is difficult to determine the position of the radial artery 5 due to a thicker arm, which can greatly improve the blood collection efficiency and avoid causing greater harm to the patient due to multiple punctures.

[0047] It should be understood that the various forms of processes shown above can be used, with steps reordered, added or deleted. For example, the steps described in this application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of this application can be achieved, and no limitations are imposed herein.

[0048] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0049] As described above, this is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claimed rights.

Claims

1. An arterial blood sampling auxiliary device, characterized in that: The invention comprises a fixed part (1) and a light-emitting part (2), wherein the light-emitting part (2) is provided with a light-emitting body capable of generating light of a certain intensity in a certain direction, and the light-emitting part (2) is mounted on the fixed part (1) in a manner rotatable relative to the fixed part (1), so that the irradiation direction of the light-emitting part (2) can be adjusted, and at least two light-emitting parts (2) are provided, and by adjusting the irradiation direction of the light-emitting parts (2), different light-emitting parts (2) can irradiate the same position.

2. The arterial blood sampling auxiliary device according to claim 1, characterized in that: The light-emitting portion (2) is provided with a focusing lens (22) so that the light-emitting portion (2) can generate parallel light rays.

3. The arterial blood sampling auxiliary device according to claim 2, characterized in that: The light-emitting portion (2) comprises a first light-emitting portion (201) and a second light-emitting portion (202); the first light-emitting portion (201) can form a fan-shaped light source, and the second light-emitting portion (202) can form a strip-shaped light source.

4. The arterial blood sampling auxiliary device according to any one of claims 1 to 3, characterized in that: The fixing portion (1) is provided with a plurality of semicircular mounting grooves (10) or mounting holes (271), and the mounting grooves (10) or the mounting holes (271) are capable of mounting the light-emitting portion (2).

5. The arterial blood sampling auxiliary device according to claim 4, characterized in that: The light-emitting portion (2) is provided with a rotary switch (30) and controls the brightness of the light-emitting body by rotation. The light-emitting portion (2) is also provided with a mechanical rotary timing device (29).

6. The arterial blood sampling auxiliary device according to claim 5, characterized in that: The fixing portion (1) comprises a fixing block (13) and an elastic connecting block (14); the elastic connecting block (14) is made of an elastic material and has two ends connected to different fixing blocks (13); the different fixing blocks (13) are connected via the elastic connecting block (14); and the fixing block (13) is provided with the mounting groove (10) capable of mounting the light-emitting portion (2).

7. The arterial blood sampling auxiliary device according to claim 6, characterized in that: The fixing portion (1) is provided with a blood sampling frame (15), and the blood sampling frame (15) is provided with a blood sampling support (16), and the blood sampling support (16) can be installed with a blood sampling device.

8. The arterial blood sampling auxiliary device according to claim 7, characterized in that: The blood sampling support (16) is provided with a slidable track (18) capable of sliding relative to the blood sampling frame (15), and the blood sampling frame (15) is provided with a laser strip emitting lamp (19).

9. The arterial blood sampling auxiliary device according to claim 4, characterized in that: The light-emitting portion (2) is fixed to the fixing portion (1) via a rotating positioning piece (26).

10. The arterial blood sampling auxiliary device according to any one of claims 1 to 3, characterized in that: The fixing portion (1) is provided with a plurality of mounting chains (27), and adjacent mounting chains (27) are hinged to each other via hinge shafts (28) so that the mounting chains (27) can rotate relative to each other. A mounting hole (271) is provided at the center of the mounting chain (27), and the mounting hole (271) can be used to mount the light-emitting portion (2). The light-emitting portion (2) is provided with a shell (20), and one end of the shell (20) is provided with a second curved surface (21). The mounting hole (271) is provided with a third curved surface (272) and a fourth curved surface (273) that match the second curved surface (21), and the third curved surface (272) and the fourth curved surface (273) are respectively located on two sides of the mounting hole (271). The mounting chain (27) comprises a first matching portion (274), a second matching portion (275), and a second matching portion (276). , a first arc-shaped connecting arm (276) and a second arc-shaped connecting arm (277), the first matching portion (274) being provided with the third arc surface (272) on a side close to the second matching portion (275), the second matching portion (275) being provided with the fourth arc surface (273) on a side close to the first matching portion (274), the first matching portion (274) and the second matching portion (275) being connected at both ends by the first arc-shaped connecting arm (276) and the second arc-shaped connecting arm (277), the first arc-shaped connecting arm (276) and the second arc-shaped connecting arm (277) forming a C-shape, the first arc-shaped connecting arm (276) and the second arc-shaped connecting arm (277) having a certain elasticity and being able to deform within a certain range, i.e. the distance between the two ends of the C-shape can be changed.

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