An infrared imaging system and apparatus for arterial vascular morphology assessment

Abstract

The present application relates to infrared imaging device technical field, especially to a kind of for arterial blood vessel shape evaluation infrared imaging system and equipment.The technical scheme includes organism, also include fixedly installed on organism and obtains the infrared imaging module of target area skin surface and subcutaneous tissue, fixedly installed in the image processing module of organism, fixedly installed on organism for real-time display the display module of the blood vessel direction and depth information processed, fixedly installed on the auxiliary positioning system of organism.The present application avoids the problem that imaging contrast is insufficient due to weak depth and temperature difference signal of arterial blood vessel, cannot accurately present arterial blood vessel direction, depth and morphological characteristics, and the present application can real-time, noninvasive, accurately evaluate arterial blood vessel shape, effectively improve puncture safety and operation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of infrared imaging equipment, and particularly relates to an infrared imaging system and equipment for arterial vessel shape evaluation. BACKGROUND

[0002] With the continuous development of minimally invasive intervention (radial / femoral artery intervention treatment), hemodialysis technology (arteriovenous fistula), and the use of various emergency instruments and equipment (IABP, ECMO, etc.), various arterial approaches are widely used due to their small trauma, rapid recovery and other advantages, which also brings many complications such as hematoma, arterial occlusion, nerve damage, and tissue necrosis. The existing blood vessel evaluation technology mainly includes two types:

[0003] The first type is angiography technology, which needs to inject contrast medium and combine X-ray imaging, has trauma, depends on large equipment, and has radiation risk, and is difficult to realize real-time bedside operation.

[0004] The second type is ultrasonic imaging technology, which is non-invasive, but the image quality is easily affected by the thickness of the patient's subcutaneous fat, the shape of the blood vessel, and the operator's experience, and the positioning accuracy is insufficient in complex cases, and the device portability is poor, which is difficult to meet the needs of emergency or bedside rapid deployment.

[0005] Therefore, there is an urgent need for a simple, convenient, and non-invasive arterial vessel shape evaluation device to achieve the following functional purposes: 1. Superficial artery (within 7 cm) shape and plaque evaluation: By detecting the shape and diameter change of the artery, characteristic changes such as blood vessel wall thickening and plaque formation can be found. For example: before PCI or other operations requiring radial artery, evaluation of radial artery access, and evaluation of blood vessels for tavi surgery. 2. Arterial vessel stenosis degree judgment: By measuring the blood vessel diameter and blood flow velocity, the stenosis rate can be calculated. For example, coronary angiography combined with hemodynamic analysis can accurately determine the degree of stenosis and guide the selection of treatment options; evaluation of arteriovenous fistula (blood filter use) before and after dialysis, daily maintenance (whether there is blood stealing). 3. Arterial function (hemodynamics) evaluation: after surgery or after arterial implantation of instruments: the function of the distal blood vessel; after vascular surgery, the rehabilitation effect can be evaluated by detecting the blood flow velocity and blood vessel diameter change. 4. Direct body surface calibration of arterial puncture point: for patients with bifurcation and special arterial puncture points, the body surface calibration is convenient, and the puncture success rate is improved. SUMMARY

[0006] In one aspect, the present application provides an infrared imaging device for arterial vessel shape evaluation, comprising a machine body, and further comprising:

[0007] An infrared imaging module fixedly installed on the machine body to acquire the skin surface and subcutaneous tissue of a target area;

[0008] An image processing module is fixedly installed inside the body and is communicatively connected to the infrared imaging module. The image processing module performs edge enhancement processing on the infrared thermal image data, extracts blood vessel contours, and calculates the depth information of subcutaneous blood vessels based on the thermal radiation gradient distribution.

[0009] A display module fixedly installed on the machine body for real-time display of processed blood vessel direction and depth information;

[0010] An auxiliary positioning system fixedly installed on the body, the auxiliary positioning system projecting a visual puncture guide mark on the patient's body surface.

[0011] Optionally, a support plate is fixedly installed on the body, and a hand cooling component that adaptively conforms to the shape of the hand and cools the hand is fixedly installed on the support plate. The support plate is also equipped with a multi-contour adaptive conforming component that forms a groove according to the shape of the hand to fix and support the hand.

[0012] Optionally, the hand cooling component includes a flexible support plate fixedly mounted on a support plate, an elastic heat-conducting sheet fixedly mounted inside the support plate, a cooling cavity formed between the support plate and the heat-conducting sheet, and a pressure regulating component for controlling the internal pressure of the cooling cavity connected to the cooling cavity.

[0013] Optionally, the pressure regulating assembly includes a pressure tube fixedly mounted on the support plate and communicating with the cooling cavity. A sealing plate is slidably installed inside the pressure tube. The pressure tube, the area above the sealing plate, and the cooling cavity are all filled with a heat-conducting medium. A first push rod motor is fixedly mounted on the machine body. The output shaft of the first push rod motor is fixedly connected to the sealing plate. A pressure sensor is integrated inside the first push rod motor.

[0014] Optionally, the two ends of the support plate are respectively provided with an inlet pipe and an outlet pipe that communicate with the cooling chamber. A heat exchanger is fixedly installed on the body. The inlet pipe and the outlet pipe are both connected to the heat exchanger. The heat exchanger is connected to the water cooling device.

[0015] Optionally, a metal plate is fixedly installed on one side of the support plate, a second push rod motor is fixedly installed on the machine body, and an electromagnet is fixedly installed on the output shaft of the second push rod motor.

[0016] Optionally, the multi-contour adaptive fitting component includes a flexible support pad fixedly mounted on a support plate, a liquid tank fixedly mounted on the support plate, the liquid tank and the support pad forming a sealed support cavity, a pressure cylinder communicating with the support cavity fixedly mounted on one side of the liquid tank, a first sealing plate slidably mounted inside the pressure cylinder, a first elastic element fixedly mounted between the first sealing plate and the pressure cylinder, both the support cavity and one side of the pressure cylinder being filled with liquid, and multiple sets of support positioning components installed inside the liquid tank, the support positioning components being connected to the support pad and fixing the shape of the support pad.

[0017] Optionally, the support and positioning assembly includes a positioning cylinder rotatably mounted inside the liquid tank, a sealing head slidably mounted inside the positioning cylinder, a positioning rod fixedly mounted on the sealing head, the positioning rod being rotatably connected to the support pad, a positioning box fixedly mounted at the bottom of the liquid tank, and the bottom of the positioning cylinder communicating with the positioning box via a flexible hose.

[0018] Optionally, the support positioning assembly further includes a storage box fixedly installed at one end of the positioning box and communicating with the inside of the positioning box. A second sealing plate is slidably installed inside the storage box. A second elastic element is fixedly installed between the second sealing plate and the storage box. An electrically controlled valve is fixedly installed between the storage box and the positioning box. The positioning cylinder is located below the sealing head. The hose, positioning box, electrically controlled valve, and storage box are all filled with liquid on the side near the positioning box.

[0019] Optionally, the support plate and the heat-conducting plate are tapered structures. A shrinking component is installed on the support plate. The shrinking component includes multiple pull ropes with one end fixedly connected to one side of the support plate. A winding disc corresponding to each pull rope is rotatably installed on the upper part of the machine body. The other end of the pull rope is fixedly connected to the winding disc. A motor is fixedly installed on the machine body. A transmission shaft is fixedly installed on the output shaft of the motor. A transmission assembly is installed between the transmission shaft and the winding disc.

[0020] The transmission assembly includes a connecting box fixedly mounted on the transmission shaft, a plurality of clamping plates rotatably mounted inside the connecting box, a plurality of connecting grooves with a width greater than the thickness of the clamping plates on the connecting box, a plurality of clamping grooves engaging with the clamping plates on the inner ring of the winding disc, and a plurality of tension springs fixedly mounted between the clamping plates and the connecting box.

[0021] On the other hand, the present invention also proposes an infrared imaging system for arterial vascular morphology assessment, including the infrared imaging device for arterial vascular morphology assessment described above.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] This application avoids the problem that insufficient imaging contrast of arterial vessels due to weak depth and temperature difference signals, which makes it impossible to accurately present the direction, depth and morphological characteristics of arteries. Moreover, this invention can assess the morphology of arterial vessels in real time, non-invasively and accurately, effectively improving puncture safety and operation efficiency. Attached Figure Description

[0024] Figure 1 Schematic diagram of the infrared imager Figure 1 ;

[0025] Figure 2 Schematic diagram of the infrared imager Figure 2 ;

[0026] Figure 3 Schematic diagram of the infrared imager Figure 3 ;

[0027] Figure 4 This is a system flowchart of the present invention;

[0028] Figure 5 A schematic diagram of the hand cooling component;

[0029] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0030] Figure 7 This is a schematic diagram showing the connection between the pressure pipe and the sealing plate;

[0031] Figure 8 Schematic diagram of the structure of a multi-contour adaptive bonding component Figure 1 ;

[0032] Figure 9 Schematic diagram of the structure of a multi-contour adaptive bonding component Figure 2 ;

[0033] Figure 10 This is a schematic diagram of the shrink-fit component;

[0034] Figure 11 This is a schematic diagram of the transmission assembly.

[0035] Reference numerals: 1. Body; 101. Infrared imaging module; 102. Auxiliary positioning system; 103. Display module; 2. Support plate; 3. Hand cooling component; 301. Support plate; 302. Heat-conducting plate; 303. Cooling chamber; 304. Pressurization pipe; 305. Sealing plate; 306. First push rod motor; 307. Water inlet pipe; 308. Water outlet pipe; 309. Heat exchanger; 310. Metal sheet; 311. Second push rod motor; 312. Electromagnet; 4. Multi-contour adaptive fitting component; 401. Support pad; 402. Liquid tank; 403. Positioning cylinder; 404. Sealing head; 405. Positioning rod; 406. Pressure cylinder; 407. First sealing plate; 408. First elastic element; 409. Positioning box; 410. Hoses; 411. Storage box; 412. Second sealing plate; 413. Second elastic element; 414. Electrically controlled valve; 415. Support cavity; 5. Shrinkage component; 501. Pull rope; 502. Winding disc; 503. Motor; 504. Drive shaft; 505. Connecting box; 506. Clamping plate; 507. Connecting groove; 508. Clamping groove; 509. Tension spring. Detailed Implementation

[0036] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0038] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Example 1, as Figures 1 to 3 As shown, the present invention proposes an infrared imaging device for assessing arterial vascular morphology, including a body 1, an infrared imaging module 101, an image processing module, a display module 103, and an auxiliary positioning system 102.

[0042] In this embodiment, the infrared imaging device includes an optical module, which consists of an infrared light source, a dichroic mirror, an infrared camera, and a green-blue projector. A 45° tilted reflector (dichroic mirror) is placed in the projector's optical path to reflect infrared light to the infrared camera at a certain angle, while being transparent to green-blue light and having no reflective effect. Based on the infrared image of the blood vessels captured by the camera, the projector emits green-blue light, which, through the dichroic mirror, projects an image with the same structure onto the skin surface of the back of the hand captured by the infrared camera, with the projection angle spatially coinciding with the shooting angle. An infrared filter is installed at the front end of the infrared camera, preventing green-blue light from entering the photosensitive surface of the infrared camera, thus ensuring that the infrared camera only identifies the radial artery in the hand and is not interfered with by the green-blue image projected by the projector.

[0043] In use, the infrared imaging module 101 acquires infrared thermal images of the skin surface and subcutaneous tissue in the surgical area. The image processing module enhances the image, extracts edges, and estimates depth to reconstruct the spatial orientation and depth information of the blood vessels. This information is presented through the display module 103, and the auxiliary positioning system 102 assists the surgeon in quickly identifying the ideal puncture point through laser indication or projection positioning. This device is suitable for puncture scenarios of superficial arteries such as the radial artery. The operation process is non-invasive, real-time, and precise, effectively reducing the risk of blind puncture and postoperative complications.

[0044] By combining infrared thermal imaging technology with image enhancement algorithms, this device enables non-contact, non-invasive real-time imaging and morphological assessment of subcutaneous arteries. Compared with ultrasound, this device does not rely on coupling agents or professional operators, thus avoiding image errors caused by insufficient operator experience or differences in patient body size. Compared with angiography, it avoids the risks of infection and radiation associated with invasive puncture and contrast agent use.

[0045] This approach utilizes an infrared imaging module 101 to identify subcutaneous temperature distribution differences, and combines this with image processing algorithms to provide high-contrast visualization of arterial course, diameter, and branch structures, effectively improving the accuracy of puncture localization and the convenience of intraoperative assessment. Furthermore, the device's compact structure allows for rapid deployment at the bedside or in the treatment site, making it particularly suitable for high-risk patients with complex vascular conditions. In summary, this approach significantly improves the safety and success rate of puncture procedures, reduces the incidence of complications, and has clear advantages for clinical application.

[0046] It should be noted that the infrared imaging module 101 can be replaced with a near-infrared spectral imaging module or a multispectral imaging module to enhance the ability to identify blood vessels in deep or low-flow conditions. Secondly, the image processing module can integrate a deep learning-based blood vessel recognition algorithm to improve the system's accuracy in identifying abnormal blood vessel structures, such as tortuous, bifurcated, or occluded areas. In terms of structural design, the infrared imaging module 101 and the display module 103 can be integrated into a portable handheld terminal, or they can be integrated with existing puncture needle guide devices to achieve integrated image navigation and puncture operation.

[0047] In addition to laser projection, the alignment between the device and the puncture tool can also be achieved through augmented reality (AR) technology, which enables real-time overlay navigation of the vascular path within the surgeon's field of vision. All of these methods can improve puncture accuracy and safety without departing from the core principles of this invention, and are therefore equivalent substitutes.

[0048] As one implementation method, such as Figures 1 to 3 As shown, a support plate 2 is fixedly installed on the body 1. When in use, the hand is placed on the support plate 2. A hand cooling component 3 is fixedly installed on the support plate 2 to adaptively fit the shape of the hand and cool the hand. When arteries and veins run parallel (such as the radial artery and its accompanying vein being closely adjacent), mislabeling may occur. By gently pressing the skin, the veins collapse due to low pressure while the arteries remain full, allowing for differentiation based on dynamic changes in the image. Alternatively, local cold compresses can be applied. After the cold compress, the arteries quickly recover their temperature due to rapid blood flow, while the venous changes lag behind, effectively preventing the problem of not being able to differentiate when arteries and veins run parallel. The support plate 2 is also equipped with a multi-contour adaptive fitting component 4 that forms a groove according to the shape of the hand for fixed support. Since different patients have different hand shapes, the multi-contour adaptive fitting component 4 can adaptively adjust the hand shape so that the hand is embedded inside the groove, providing effective support and fixation for the hand.

[0049] As one implementation method, such as Figure 4 and Figure 6As shown, the hand cooling component 3 includes a flexible support plate 301 fixedly mounted on the support plate 2. An elastic heat-conducting plate 302 is fixedly mounted inside the support plate 301. A cooling cavity 303 is formed between the support plate 301 and the heat-conducting plate 302. A pressure regulating component is connected to the cooling cavity 303 to control the internal pressure of the cooling cavity 303. By supplying a lower temperature liquid to the cooling cavity 303 and applying pressure to the cooling cavity 303, the cooling cavity 303 can apply pressure to the heat-conducting plate 302, causing the heat-conducting plate 302 to deform and adhere to the skin of the hand, thereby providing a cold compress to the hand. Furthermore, by setting the pressure regulating component, the heat-conducting plate 302 can apply a certain pressure to the hand, allowing the hand to make uniform contact with the heat-conducting plate 302, and simulating the state of pressing the skin.

[0050] Furthermore, the pressure regulating component includes a pressure pipe 304 fixedly installed on the support plate 2 and communicating with the cooling chamber 303. A sealing plate 305 is slidably installed inside the pressure pipe 304. Both the pressure pipe 304 and the area above the sealing plate 305, as well as the cooling chamber 303, are filled with a heat-conducting medium, which is liquid. A first push rod motor 306 is fixedly installed on the body 1. The output shaft of the first push rod motor 306 is fixedly connected to the sealing plate 305. A pressure sensor is integrated inside the first push rod motor 306. By driving the sealing plate 305 to rise through the first push rod motor 306, the heat-conducting medium inside the pressure pipe 304 can be forced into the cooling chamber 303, thereby squeezing the heat-conducting sheet 302 and making the heat-conducting sheet 302 evenly contact the hand.

[0051] Furthermore, the support plate 301 has an inlet pipe 307 and an outlet pipe 308 at both ends, which are connected to the cooling chamber 303. A heat exchanger 309 is fixedly installed on the body 1. Both the inlet pipe 307 and the outlet pipe 308 are connected to the heat exchanger 309. The heat exchanger 309 is connected to a water cooling device. The water cooling device delivers low-temperature liquid into the heat exchanger. The heat exchanger integrates a water pump system to circulate the heat transfer medium inside the cooling chamber 303 through the heat exchanger 309. This allows the heat transfer medium to exchange heat with the low-temperature liquid, thereby reducing the temperature of the heat transfer medium and thus providing a cooling effect on the hands.

[0052] A metal sheet 310 is fixedly installed on one side of the support plate 301, and a second push rod motor 311 is fixedly installed on the body 1. An electromagnet 312 is fixedly installed on the output shaft of the second push rod motor 311. When applying a cold compress to the hand, the support plate 301 is first wrapped around the hand, and the other end of the support plate 301 is passed through the support plate 2 and the metal sheet 310 is magnetically connected to the electromagnet 312. Then, the support plate 301 is tightened by the second push rod motor 311, so that the heat-conducting sheet 302 is attached to the hand.

[0053] As one implementation method, such as Figures 4 to 9 As shown, in this embodiment, the multi-contour adaptive fitting component 4 includes a flexible support pad 401 fixedly mounted on the support plate 2. The support pad 401 supports the hand. A liquid tank 402 is fixedly mounted on the support plate 2. The liquid tank 402 and the support pad 401 form a sealed support cavity 415. A pressure cylinder 406 communicating with the support cavity 415 is fixedly mounted on one side of the liquid tank 402. A first sealing plate 407 is slidably mounted inside the pressure cylinder 406. The first sealing plate 407 and the pressure cylinder 406 are fixedly... The first elastic element 408 is fixedly installed. One side of the support cavity 415 and the pressure cylinder 406 are filled with liquid. When the arm is placed on the support pad 401, the support pad 401 will be concave and squeeze the liquid inside the liquid tank 402, so that the liquid enters the pressure cylinder 406. Under the action of the first elastic element 408, pressure can be applied to the liquid and make the liquid support the support pad 401, so that the support pad 401 can cover the hand and prevent gaps from appearing between the support pad 401 and the hand.

[0054] The liquid tank 402 is equipped with multiple sets of support and positioning components. The support and positioning components are connected to the support pad 401 and fix the shape of the support pad 401. Since the shape of the support pad 401 can be deformed, it cannot limit the hand when the support pad 401 is adjusted to match the shape of the hand. The support and positioning components can prevent the support pad 401 from moving and can play the role of supporting and limiting the hand.

[0055] In one embodiment, the support positioning assembly includes a positioning cylinder 403 rotatably mounted inside the liquid tank 402, a sealing head 404 slidably mounted inside the positioning cylinder 403, a positioning rod 405 fixedly mounted on the sealing head 404, the positioning rod 405 rotatably connected to the support pad 401, a positioning box 409 fixedly mounted at the bottom of the liquid tank 402, and the bottom of the positioning cylinder 403 connected to the positioning box 409 via a flexible hose 410. Multiple positioning rods 405 are respectively connected to different positions of the support pad 401. When the positioning rods 405 cannot move, the support pad 401 connected to the positioning rods 405... The support pad 401 will be unable to move, and when the support pad 401 is first pressed down by hand, it will cause the positioning rod 405 to move down. The moving positioning rod 405 will cause the sealing head 404 to move. The moving sealing head 404 will cause the liquid inside the positioning cylinder 403 to be transported into the positioning box 409. At this time, the volume inside the positioning box 409 needs to be expanded. Otherwise, the sealing head 404 cannot move, and the total length of the positioning rod 405 and the positioning cylinder 403 cannot be changed, thus making it impossible for the support pad 401 connected to it to move.

[0056] In one embodiment, the supporting positioning assembly also includes a storage tank 411 fixedly installed at one end of the positioning box 409 and communicating with the interior of the positioning box 409. A second sealing plate 412 is slidably installed inside the storage tank 411. A second elastic member 413 is fixedly installed between the second sealing plate 412 and the storage tank 411. An electrically controlled valve 414 is fixedly installed between the storage tank 411 and the positioning box 409. The positioning cylinder 403 is located below the sealing head 404. The hose 410, positioning box 409, electrically controlled valve 414, and storage tank 411 on the side near the positioning box 409 are all filled with liquid. The liquid is an incompressible liquid under working conditions. After the liquid inside the positioning cylinder 403 is pressed down into the positioning box 409, the liquid inside the positioning box 409 will enter the storage box 411. Under the action of the second elastic element 413, the liquid inside the positioning box 409 can always be kept full. After positioning is completed, closing the electric control valve 414 will disconnect the connection between the storage box 411 and the positioning box 409. At this time, liquid cannot enter the positioning box 409, thus preventing the sealing head 404 from moving and positioning the support pad 401. This allows the support pad 401 to adapt to different arm shapes, providing good support for the arm and playing a limiting and fixing role.

[0057] On the other hand, the present invention proposes an infrared imaging system for arterial vascular morphology assessment, including the infrared imaging device for arterial vascular morphology assessment described above. The system includes an infrared imaging module 101 for acquiring infrared thermal images of the skin surface and subcutaneous tissue of the surgical area; an image processing module enhances the images, extracts edges, and estimates depth to reconstruct the spatial orientation and depth information of the blood vessels. This information is presented through a display module 103, and an auxiliary positioning system 102 assists the surgeon in quickly identifying the ideal puncture point through laser guidance or projection positioning. This device is suitable for puncture scenarios of superficial arteries such as the radial artery. The operation is non-invasive, real-time, and precise, effectively reducing the risk of blind puncture and postoperative complications.

[0058] The water-cooling device delivers low-temperature liquid into the heat exchanger, which integrates a water pump system. The heat transfer medium inside the cooling chamber 303 circulates through the heat exchanger 309, allowing the heat transfer medium to exchange heat with the low-temperature liquid, thereby reducing the temperature of the heat transfer medium and thus providing a cooling compress to the hand. By delivering a lower-temperature liquid into the cooling chamber 303 and applying pressure to the inside of the cooling chamber 303, the cooling chamber 303 applies pressure to the heat transfer plate 302, causing the heat transfer plate 302 to deform and adhere to the skin of the hand, thus providing a cooling compress to the hand. Furthermore, the pressure regulating component allows the heat transfer plate 302 to apply a certain pressure to the hand, ensuring even contact between the hand and the heat transfer plate 302. This can simulate the state of lightly pressing the skin, where veins collapse due to low pressure while arteries remain full. This can be distinguished based on dynamic changes in the image. It can also be used for local cooling. After the cooling compress, the arteries quickly recover their temperature due to rapid blood flow, while the changes in veins are delayed, effectively preventing the problem of not being able to distinguish between arteries and veins when they are parallel.

[0059] When the arm is placed on the support pad 401, the support pad 401 will be concave and squeeze the liquid inside the liquid tank 402, allowing the liquid to enter the pressurizing cylinder 406. Under the action of the first elastic member 408, pressure can be applied to the liquid, and the liquid can support the support pad 401, so that the support pad 401 can cover the hand. Multiple positioning rods 405 are connected to different positions of the support pad 401. When the positioning rods 405 cannot move, the support pad 401 connected to the positioning rods 405 will also be unable to move.

[0060] Example 2, as Figure 10 and Figure 11As shown, based on Embodiment 1, since the arm is not a standard cylinder but gradually thickens from the wrist towards the arm, the support plate 301 and the heat-conducting plate 302 are made into a conical structure to better adapt to the human body. This allows the heat-conducting plate 302 to fit more closely. A shrinking component 5 is installed on the support plate 301. The shrinking component 5 includes multiple pull ropes 501, one end of which is fixedly connected to one side of the support plate 301. A winding disc 502 corresponding to each pull rope 501 is rotatably installed on the upper part of the machine body 1. When the winding disc 502 rotates, it will stretch the pull ropes 501, thereby tightening the support plate 301 and the heat-conducting plate 302, making the heat-conducting plate 302 more flexible. The heating element 302 is in close contact with human skin. The other end of the pull rope 501 is fixedly connected to the winding reel 502. A motor 503 is fixedly installed on the machine body 1. A transmission shaft 504 is fixedly installed on the output shaft of the motor 503. A transmission assembly is installed between the transmission shaft 504 and the winding reel 502. The motor 503 drives the transmission shaft 504 to rotate. The rotating transmission shaft 504 will drive multiple winding reels 502 to rotate through the transmission assembly. Since people of different body types need different degrees of tightening in different parts, when the winding reel 502 encounters a certain resistance while rotating, it can stop rotating, but this does not affect the continued rotation of other winding reels 502. This function can be achieved through the transmission assembly.

[0061] Furthermore, the transmission assembly includes a connecting box 505 fixedly mounted on the transmission shaft 504. Multiple clamping plates 506 are rotatably mounted inside the connecting box 505. The connecting box 505 has multiple connecting grooves 507, the width of which is greater than the thickness of the clamping plates 506. The inner ring of the winding reel 502 has multiple slots 508 that engage with the clamping plates 506. Multiple tension springs 509 are fixedly installed between the clamping plates 506 and the connecting box 505. Under the action of the tension springs 509, the axis of the clamping plates 506 will coincide with the axis of the transmission shaft 504. At this time, the clamping plates 506 are located inside the slots 508. Then, the transmission shaft 504... The connecting box 505 is rotated, and through the transmission of the clamping plate 506, the winding disc 502 is rotated. When the winding disc 502 encounters resistance and cannot rotate, the clamping plate 506, which continues to rotate, will cause relative rotation between the clamping plate 506 and the connecting box 505, and cause the clamping plate 506 to disengage from the clamping slot 508 and continue to rotate. At this time, the winding disc 502 will not be rotated. Then, a single motor 503 can drive multiple pull ropes 501 to tighten synchronously. Multiple pull ropes 501 can be set, thereby improving the fit between the heat-conducting sheet 302 and the skin.

[0062] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An infrared imaging device for assessing arterial vascular morphology, comprising a body (1), characterized in that, Also includes: An infrared imaging module (101) located on the body (1) to acquire infrared thermal image data of the skin surface and subcutaneous tissue of the target area; An image processing module is installed inside the body (1). The image processing module is communicatively connected to the infrared imaging module (101). The image processing module performs edge enhancement processing on the infrared thermal image data, extracts blood vessel contours, and calculates the depth information of subcutaneous blood vessels based on the thermal radiation gradient distribution. A display module (103) located on the body (1) for real-time display of processed blood vessel direction and depth information; And an auxiliary positioning system (102) installed on the body (1), the auxiliary positioning system (102) projecting a visual puncture guide mark on the patient's body surface; A support plate (2) is fixedly installed on the body (1). A hand cooling component (3) that adapts to the shape of the hand and cools the hand is fixedly installed on the support plate (2). The support plate (2) is also equipped with a multi-contour adaptive fitting component (4) that forms a groove according to the shape of the hand to fix and support the hand. The multi-contour adaptive fitting component (4) includes a flexible support pad (401) fixedly installed on the support plate (2). A liquid tank (402) is fixedly installed on the support plate (2). The liquid tank (402) and the support pad (401) form a sealed support cavity (415). A pressure cylinder (406) communicating with the support cavity (415) is fixedly installed on one side of the liquid tank (402). A first sealing plate (407) is slidably installed inside the pressure cylinder (406). A first elastic element (408) is fixedly installed between the first sealing plate (407) and the pressure cylinder (406). Both the support cavity (415) and one side of the pressure cylinder (406) are filled with liquid.

2. The infrared imaging device for assessing arterial vascular morphology according to claim 1, characterized in that, The hand cooling component (3) includes a flexible support plate (301) fixedly installed on the support plate (2), and an elastic heat-conducting plate (302) fixedly installed inside the support plate (301). A cooling cavity (303) is formed between the support plate (301) and the heat-conducting plate (302). A pressure regulating component for controlling the internal pressure of the cooling cavity (303) is connected to the cooling cavity (303).

3. The infrared imaging device for assessing arterial vascular morphology according to claim 2, characterized in that, The pressure regulating assembly includes a pressure pipe (304) fixedly installed on the support plate (2) and communicating with the cooling chamber (303). A sealing plate (305) is slidably installed inside the pressure pipe (304). The pressure pipe (304) and the area above the sealing plate (305) and the cooling chamber (303) are filled with a heat-conducting medium. A first push rod motor (306) is fixedly installed on the body (1). The output shaft of the first push rod motor (306) is fixedly connected to the sealing plate (305). A pressure sensor is integrated inside the first push rod motor (306).

4. The infrared imaging device for assessing arterial vascular morphology according to claim 3, characterized in that, The support plate (301) has an inlet pipe (307) and an outlet pipe (308) at both ends that are connected to the cooling chamber (303). A heat exchanger (309) is fixedly installed on the body (1). The inlet pipe (307) and the outlet pipe (308) are both connected to the heat exchanger (309). The heat exchanger (309) is connected to the water cooling device.

5. An infrared imaging device for assessing arterial vascular morphology according to claim 4, characterized in that, A metal plate (310) is fixedly installed on one side of the support plate (301), and a second push rod motor (311) is fixedly installed on the body (1). An electromagnet (312) is fixedly installed on the output shaft of the second push rod motor (311).

6. An infrared imaging device for assessing arterial vascular morphology according to claim 5, characterized in that, Multiple sets of support and positioning components are installed inside the liquid tank (402). The support and positioning components are connected to the support pad (401) and fix the shape of the support pad (401).

7. An infrared imaging device for assessing arterial vascular morphology according to claim 6, characterized in that, The support and positioning assembly includes a positioning cylinder (403) rotatably mounted inside the liquid tank (402), a sealing head (404) slidably mounted inside the positioning cylinder (403), a positioning rod (405) fixedly mounted on the sealing head (404), the positioning rod (405) being rotatably connected to the support pad (401), a positioning box (409) fixedly mounted at the bottom of the liquid tank (402), and the bottom of the positioning cylinder (403) being connected to the positioning box (409) via a flexible hose (410).

8. An infrared imaging device for assessing arterial vascular morphology according to claim 7, characterized in that, The supporting positioning assembly also includes a storage tank (411) fixedly installed at one end of the positioning box (409) and communicating with the inside of the positioning box (409). A second sealing plate (412) is slidably installed inside the storage tank (411). A second elastic element (413) is fixedly installed between the second sealing plate (412) and the storage tank (411). An electrically controlled valve (414) is fixedly installed between the storage tank (411) and the positioning box (409). The positioning cylinder (403) is located below the sealing head (404). The hose (410), positioning box (409), electrically controlled valve (414) and storage tank (411) are all filled with liquid on the side near the positioning box (409).

9. An infrared imaging device for assessing arterial vascular morphology according to claim 8, characterized in that, The support plate (301) and the heat-conducting plate (302) are conical structures. A shrinking component (5) is installed on the support plate (301). The shrinking component (5) includes multiple pull ropes (501) with one end fixedly connected to one side of the support plate (301). A winding disc (502) corresponding to each pull rope (501) is rotatably installed on the upper part of the machine body (1). The other end of the pull rope (501) is fixedly connected to the winding disc (502). A motor (503) is fixedly installed on the machine body (1). A transmission shaft (504) is fixedly installed on the output shaft of the motor (503). A transmission assembly is installed between the transmission shaft (504) and the winding disc (502). The transmission assembly includes a connecting box (505) fixedly mounted on the transmission shaft (504). Multiple clamping plates (506) are rotatably mounted inside the connecting box (505). The connecting box (505) is provided with multiple connecting grooves (507) whose width is greater than the thickness of the clamping plates (506). The inner ring of the winding disc (502) is provided with multiple clamping grooves (508) that engage with the clamping plates (506). Multiple tension springs (509) are fixedly installed between the clamping plates (506) and the connecting box (505).

10. An infrared imaging system for assessing arterial vascular morphology, characterized in that, Including the infrared imaging device for arterial vascular morphology assessment as described in claim 9 above.

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