Laser speckle contrast imaging device for foot microcirculation perfusion evaluation

Abstract

The invention relates to the technical field of diabetic feet, in particular to a laser speckle contrast imaging device for foot microcirculation perfusion assessment, which comprises a laser imager, a controller and a placement frame, a top plate is hinged to the top of the placement frame, a driving part is fixedly connected to the bottom of the top plate, and a rotating shaft is fixedly connected to an output shaft of the driving part; the bottom of the inclined table is rotatably matched with an eccentric rod, the bottom of the eccentric rod is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a first electric control cylinder, and an output shaft of the first electric control cylinder is fixedly connected with the laser imager; a limiting frame is fixedly connected to the end, away from the eccentric rod, of the rotating rod, a limiting plate is further fixedly connected to the bottom of the top plate, and the limiting plate is located in the middle of the limiting frame and is in vertical sliding fit with the limiting frame; through the design of the eccentric rod, the angle of the laser imager can be automatically adjusted, it is guaranteed that the laser imager can shoot stable pictures, and the evaluation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diabetic foot, in particular to a laser speckle contrast imaging device for foot microcirculation perfusion evaluation. BACKGROUND

[0002] Foot microcirculation perfusion evaluation is a method for monitoring the blood perfusion state of small blood vessels (capillaries, arterioles, venules) in the foot by various means, to reflect the blood supply, metabolism and functional state of the foot tissue. It has important significance for early identification of foot circulation disorders, prediction of tissue healing ability, guidance of treatment and judgment of prognosis.

[0003] In the prior art, a laser speckle contrast imaging device is usually used to conveniently display the blood perfusion distribution on the surface of the tissue, so as to facilitate medical personnel to evaluate the foot microcirculation and diabetic foot of the patient. For example, the MoorFLPI-2 produced by MoorInstruments Company in the prior art includes an adjustable support and a laser imager (integrating a laser generator and a camera) mounted on the support. The laser generator is used to emit laser to the foot of the patient, and the camera is used to take pictures of the foot under the laser irradiation. The angle of the laser imager is adjusted by adjusting the angle of the support by the medical personnel, so as to realize irradiation and photography of the foot of the patient at different angles, thereby more comprehensively evaluating the foot microcirculation and diabetic foot of the patient.

[0004] In the actual evaluation process, the medical personnel need to take pictures of each position of the foot of the patient, and need to constantly adjust the support to adjust the angle of the laser emitter and the camera. The angle of the laser imager cannot be automatically adjusted, which leads to a relatively complicated evaluation process and low evaluation efficiency. Therefore, it is necessary to provide a laser speckle contrast imaging device for foot microcirculation perfusion evaluation, which can automatically adjust the angle of the laser imager and ensure that it can take stable pictures, thereby improving the evaluation efficiency. SUMMARY

[0005] To solve the above problems, the present application provides a laser speckle contrast imaging device for foot microcirculation perfusion evaluation. Through the design of the eccentric rod, the device can automatically adjust the angle of the laser imager, thereby conveniently taking images of the foot of the patient at different angles, reducing the difficulty of evaluation operation, and improving the evaluation efficiency.

[0006] In order to achieve the above object, the technical scheme of the present application is as follows: the laser speckle contrast imaging device for foot microcirculation perfusion evaluation comprises a laser imager, a controller and a placing frame, the top of the placing frame is hingedly connected with a top plate, the bottom of the top plate is fixedly connected with a driving member, the output shaft of the driving member is fixedly connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with an inclined table, the bottom of the inclined table is rotatably connected with an eccentric rod, the bottom of the eccentric rod is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a first electric cylinder, and the output shaft of the first electric cylinder is fixedly connected with the laser imager; the side wall of the eccentric rod is rotatably connected with a rotating rod, the end of the rotating rod away from the eccentric rod is fixedly connected with a limiting frame, the bottom of the top plate is also fixedly connected with a limiting plate, and the limiting plate is located in the middle of the limiting frame and vertically slidably connected with the limiting frame; the controller is used for controlling the operation of the first electric cylinder and the driving member, thereby adjusting the height and angle of the laser imager.

[0007] The technical principle of the above scheme is as follows:

[0008] Open the top plate, place the patient's foot in the placing frame, and then close the top plate, so that the laser imager is aligned with the patient's toes, the controller is started to drive the driving member, the output shaft of the driving member drives the rotating shaft and the inclined table to rotate, because the inclined table is rotatably connected with the eccentric rod, the inclined table drives the bottom of the eccentric rod to rotate around the axis of the inclined table, thereby continuously adjusting the angle of the laser imager; at the same time, because the limiting frame is slidably connected with the limiting plate, the eccentric rod also drives the rotating rod to swing up and down, thereby driving the limiting frame to slide up and down along the limiting plate; during the rotation of the eccentric rod, the rotating rod also limits the direction of the eccentric rod, so that the eccentric rod does not rotate around its own axis, but only revolves around the patient's foot with the rotation of the inclined table, ensuring that the laser imager can shoot stable pictures.

[0009] The above scheme has the following beneficial effects:

[0010] 1. In the prior art, the angle of the laser imaging device is adjusted by the user adjusting the angle of the support, thereby adjusting the shooting angle of the laser imager, which has poor operation accuracy and is tedious to operate, and the user needs to constantly adjust, which seriously affects the evaluation efficiency; in the present application, the inclined table and the eccentric rod are designed to drive the laser imager to rotate, thereby shooting the patient's foot at different angles, improving the comprehensiveness of image analysis and evaluation.

[0011] 2. In the present application, the laser imager is driven to rotate by the eccentric rod, thereby shooting the patient's foot at different angles, and the laser imager only revolves around the patient's foot without self-rotation, thereby ensuring the shooting stability of the laser imager, improving the imaging effect and improving the efficiency of image analysis and evaluation.

[0012] 3. In this invention, the design of the driving component allows the user to easily adjust the angle of the laser imager, thereby adjusting the shooting angle and shooting position; the design of the first electric control cylinder allows the user to easily adjust the distance between the laser imager and the patient's foot, thereby adjusting the shooting distance and shooting range; no manual adjustment is required from the user, effectively reducing the difficulty of the assessment operation and improving the convenience and efficiency of the assessment operation.

[0013] Furthermore, a protective frame is fixedly fitted around the drive component, and a disinfection component for disinfecting the patient's feet is provided at the bottom of the protective frame; a storage tank for storing disinfectant is fixedly connected to the bottom of the protective frame, and a rotating shaft passes through the top and bottom walls of the storage tank and rotates with it; several stirring rods are fixedly connected to the part of the rotating shaft inside the storage tank; a discharge component for filling and discharging disinfectant is provided on the storage tank.

[0014] Beneficial effects: The protective frame can protect the drive components and serve as a waterproof and dustproof barrier; the liquid storage tank can store disinfectant, providing a basis for subsequent disinfection of the patient's feet.

[0015] Furthermore, the discharge assembly includes a control valve connected to the side wall of the storage tank, and a controller for controlling the operation of the control valve; a piston rod is hinged to the outer wall of the limiting frame, a piston plate is hinged to the top of the piston rod, a piston box is fixedly connected to the limiting plate, and the piston plate slides vertically with the inner wall of the piston box; the top of the piston box is connected to the storage tank, and a first check valve for liquid inlet is connected at the connection point; the top of the piston box is also connected to a drain pipe, and a second check valve for liquid drainage is connected at the connection point.

[0016] Beneficial effects: Through the design of the piston plate, the piston box can draw disinfectant from the storage tank and spray it onto the patient's feet through the drain pipe, thereby disinfecting the patient's feet.

[0017] Furthermore, several spray pipes are fixedly connected to the bottom of the mounting plate, and each spray pipe is fixedly connected to an atomizing nozzle; the drain pipes are all connected to the spray pipes.

[0018] Beneficial effects: Through the design of the spray pipe and atomizing nozzle, the disinfectant can be sprayed more evenly and gently onto the patient's feet, improving the uniformity and comfort of the disinfection process.

[0019] Furthermore, several infrared heating lamps are fixedly connected to the bottom of the mounting plate, and the controller is used to control the operation of the infrared heating lamps.

[0020] Beneficial effects: After spraying disinfectant on the patient's feet, the infrared lamp is activated by the controller. The mounting plate can drive the infrared lamp to rotate evenly around the patient's feet, thereby accelerating the evaporation of disinfectant, keeping the patient's feet warm, ensuring blood flow in the patient's feet, and improving imaging results.

[0021] Further, the bottom of the top plate is also provided with a fixing assembly for clamping the patient's lower leg; the fixing assembly comprises a fixing plate fixedly connected to the bottom of the top plate, a adjusting frame fixedly connected to the bottom of the fixing plate, a second electric control cylinder fixedly connected to the inner top wall of the adjusting frame, a push rod fixedly connected to the output shaft of the second electric control cylinder, and triangular blocks fixedly connected to the two sides of the push rod; the inner side walls of the adjusting frame are symmetrically hinged with bending blocks, and the top of each bending block is in sliding fit with the triangular block adjacent thereto; the controller is used to control the operation of the second electric control cylinder, thereby pushing the push rod to move; the bottom of the push rod and the bottom of the bending block are both fixedly connected with an annular air bag.

[0022] Beneficial effects: In the actual laser imaging process, the patient's foot needs to be stable to ensure the stability of the collected image, and images of the patient's foot in different postures need to be taken for comparative analysis; through the design of the push rod and the bending block, different sizes of lower legs can be effectively fixed, thereby improving the stability of the patient's foot; at the same time, the patient's ankle can move, thereby taking images in different postures such as dorsiflexion, plantar flexion and neutral position.

[0023] Further, the adjusting frame is provided with a gas supply assembly for supplying gas to the air bag; the gas supply assembly comprises gas tanks fixedly connected to the inner top wall of the adjusting frame; the top of each triangular block is fixedly connected with a pump rod, the top of each pump rod is fixedly connected with a pump plate, and the pump plate is in vertical sliding fit with the inner side wall of the gas tank adjacent thereto; the air bag is in communication with the bottom of the gas tank adjacent thereto, and the upper side wall of the gas tank is provided with a gas vent.

[0024] Beneficial effects: When the triangular block moves with the push rod, it will drive the pump rod and the pump plate to slide in the gas tank, thereby adjusting the expansion degree of the air bag, making the air bag fit the patient's leg, and thereby making the push rod and the bending block better fix the patient's leg, improving the stability of the patient's lower limb and the shooting stability.

[0025] Further, the inner side walls of the adjusting frame are symmetrically fixedly connected with springs, and the end of each spring away from the inner side wall of the adjusting frame is fixedly connected with the upper part of the bending block adjacent thereto.

[0026] Beneficial effects: When the output shaft of the second electric control cylinder is retracted, the spring will push the bending block to rotate and reset, so that the bottoms of the bending blocks are away from each other, which is convenient for the user to put the leg between the bending blocks in subsequent use.

[0027] Further, a limiting ring is fixedly connected in the adjusting frame, and the push rod is located in the limiting ring and in vertical sliding fit therewith.

[0028] Beneficial effects: The limiting ring can provide stability for the vertical sliding of the push rod, and at the same time, it can also limit the triangular block from moving downward beyond the top of the bending block, preventing the push rod from being retracted.

[0029] Further, the bottom wall of the placing frame is fixedly connected with a sponge layer.

[0030] Beneficial effects: the sponge layer can wrap the patient's foot bottom, improve the comfort and stability of the patient's foot bottom.

[0031] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Axonometric view of the internal structure of the laser speckle contrast imaging device for foot microcirculation perfusion evaluation according to the present application.

[0033] Figure 2 Sectional view of the internal structure of the laser speckle contrast imaging device for foot microcirculation perfusion evaluation according to the present application.

[0034] Figure 3 Front view of the laser speckle contrast imaging device for foot microcirculation perfusion evaluation according to the present application.

[0035] Figure 4 Side sectional view of the laser speckle contrast imaging device for foot microcirculation perfusion evaluation according to the present application.

[0036] Figure 5 Front sectional view of the fixing assembly in the laser speckle contrast imaging device for foot microcirculation perfusion evaluation according to the present application.

[0037] The reference signs in the drawings of the specification comprise: 1, placement frame; 2, top plate; 3, servo motor; 4, rotating shaft; 5, inclined table; 6, eccentric rod; 7, mounting plate; 8, first electric control cylinder; 9, laser imaging instrument; 10, rotating rod; 11, limiting frame; 12, limiting plate; 13, protection frame; 14, liquid storage tank; 15, stirring rod; 16, control valve; 17, piston rod; 18, piston plate; 19, piston tank; 20, first check valve; 21, second check valve; 22, spraying pipe; 23, atomizing nozzle; 24, infrared baking lamp; 25, sponge layer; 26, fixing plate; 27, adjusting frame; 28, second electric control cylinder; 29, push rod; 30, triangular block; 31, bent block; 32, air bag; 33, air tank; 34, pump air rod; 35, pump air plate; 36, spring; 37, limiting ring. DETAILED DESCRIPTION

[0038] The following will be further described in detail through specific embodiments:

[0039] Embodiments such as Figure 2 and Figure 4 As shown in the drawings, the laser speckle contrast imaging device for foot microcirculation perfusion evaluation comprises a laser imaging instrument 9, a controller and a placement frame 1; the top of the placement frame 1 is hingedly connected with a top plate 2 (such as Figure 4As shown, the bottom of the top plate 2 is bolted and connected with a driving part (a servo motor 3 is selected in this embodiment), the output shaft of the driving part is bolted and connected with a rotating shaft 4, the bottom of the rotating shaft 4 is bolted and connected with an inclined table 5 (the bottom of the inclined table 5 is inclined about 40°), the bottom of the inclined table 5 is rotationally matched with an eccentric rod 6, the bottom of the eccentric rod 6 is bolted and connected with a mounting plate 7, the bottom of the mounting plate 7 is bolted and connected with a first electric control cylinder 8 (the maximum stroke is 200mm), the output shaft of the first electric control cylinder 8 is bolted and connected with a laser imager 9; the side wall of the eccentric rod 6 is rotationally matched with a rotating rod 10, the end of the rotating rod 10 away from the eccentric rod 6 is bolted and connected with a limiting frame 11, the bottom of the top plate 2 is also bolted and connected with a limiting plate 12, the limiting plate 12 is located in the middle of the limiting frame 11 and vertically slidably matched therewith; the controller is used to control the operation of the first electric control cylinder 8 and the driving part, thereby adjusting the height and angle of the laser imager 9.

[0040] As shown in Figure 1 and 3 Specifically, the medical staff opens the top plate 2, places the patient's foot in the placing frame 1, and then closes the top plate 2, so that the laser imager 9 is aligned with the patient's toes. The medical staff starts the driving part through the controller, and the output shaft of the driving part drives the rotating shaft 4 and the inclined table 5 to rotate (which can rotate 360°). Since the inclined table 5 is rotationally matched with the eccentric rod 6, the inclined table 5 drives the bottom of the eccentric rod 6 to rotate around the axis of the inclined table 5 (which can rotate 360°), thereby continuously adjusting the angle of the mounting plate 7 and the laser imager 9. At the same time, since the limiting frame 11 is slidably matched with the limiting plate 12, the eccentric rod 6 also drives the rotating rod 10 to swing up and down (the swing arc length is about 80°), thereby driving the limiting frame 11 to slide up and down along the limiting plate 12. During the rotation of the eccentric rod 6, the rotating rod 10 also limits the direction of the eccentric rod 6, so that the eccentric rod 6 does not rotate around its own axis, but only revolves around the patient's foot (which can rotate 360°) with the rotation of the inclined table 5. While taking multiple-angle photos of the patient's foot, it ensures that the laser imager 9 can take stable photos and form stable images (the shooting stability is improved by 50%).

[0041] During this process, the medical staff can conveniently adjust the angle of the laser imager 9 through the driving part, thereby adjusting the shooting angle and shooting position. By adjusting the output distance of the output shaft of the first electric control cylinder 8 through the controller, the distance between the laser imager 9 and the patient's foot is adjusted, thereby adjusting the shooting distance and shooting range, effectively reducing the operation difficulty of image acquisition (without manual adjustment, the operation difficulty is reduced by about 60%), and improving the acquisition efficiency of image acquisition.

[0042] As shown in Figure 2As shown, the drive member is externally fixed with a protective frame 13, the bottom of the protective frame 13 is provided with a disinfection assembly for disinfecting the patient's foot; the bottom of the protective frame 13 is bolted and connected with a liquid storage tank 14 (capacity is 500ml) for storing disinfectant; the rotating shaft 4 penetrates the top wall and the bottom wall of the liquid storage tank 14 and is in rotating cooperation with them, the part of the rotating shaft 4 located in the liquid storage tank 14 is bolted and connected with a plurality of stirring rods 15; the liquid storage tank 14 is provided with a discharge assembly for filling and discharging disinfectant.

[0043] Specifically, after the medical staff adds concentrated disinfectant (such as 84 disinfectant and hydrogen peroxide, etc., and hydrogen peroxide is selected in this embodiment) and water into the liquid storage tank 14, the rotating shaft 4 will rotate when rotating, thereby rotating the stirring rod 15, so as to stir and mix the hydrogen peroxide and water in the liquid storage tank 14, forming disinfectant of a specified concentration, facilitating subsequent disinfection of the patient's foot.

[0044] As shown, Figure 2 The discharge assembly includes a control valve 16 communicated with the side wall of the liquid storage tank 14, and a controller for controlling the operation of the control valve 16; the outer side wall of the limiting frame 11 is hinged with a piston rod 17, the top of the piston rod 17 is hinged with a piston plate 18, the limiting plate 12 is bolted and connected with a piston box 19, and the piston plate 18 is vertically slidingly matched with the inner side wall of the piston box 19; the top of the piston box 19 is communicated with the liquid storage tank 14, and a first one-way valve 20 for liquid inlet is communicated at the communication position; the top of the piston box 19 is also communicated with a liquid discharge pipe, and a second one-way valve 21 for liquid discharge is communicated at the communication position. The bottom of the mounting plate 7 is bolted and connected with a plurality of spray pipes 22, and the bottom of each spray pipe 22 is bolted and connected with an atomizing nozzle 23; the liquid discharge pipe is communicated with the spray pipe 22.

[0045] Specifically, before disinfection, the top plate 2 is opened, the control valve 16 is kept open by the controller, a specified amount of concentrated disinfectant and water is input into the liquid storage tank 14 through the control valve 16, and then the control valve 16 and the top plate 2 are closed, the drive member is started, and the drive member drives the rotating shaft 4, the stirring rod 15 and the inclined table 5 to rotate; the stirring rod 15 will stir the concentrated disinfectant and water, at the same time, the inclined table 5 will drive the eccentric rod 6 to rotate, the eccentric rod 6 will drive the rotating rod 10 to swing up and down when rotating, the rotating rod 10 will drive the limiting frame 11 to swing up and down along the limiting plate 12, and then drive the piston rod 17 and the piston plate 18 to move vertically along the piston box 19; when the piston plate 18 moves downward, the piston box 19 will suck the disinfectant in the liquid storage tank 14 through the first one-way valve 20; when the piston plate 18 moves upward, the piston box 19 will deliver the disinfectant to the spray pipe 22 through the second one-way valve 21 and the liquid discharge pipe, and then uniformly spray the disinfectant to the patient's foot through the atomizing nozzle 23; in this process, the eccentric rod 6 will drive the mounting plate 7 to swing, and the mounting plate 7 will drive the spray pipe 22 and the atomizing nozzle 23 to swing, further improving the uniformity of the disinfectant spraying and improving the comprehensiveness of disinfection.

[0046] As shown in Figure 1 The bottom of the mounting plate 7 is screw-fixedly connected with a plurality of infrared baking lamps 24 (the maximum heating temperature is 37°, slightly higher than the body temperature of human body), and a controller is used for controlling the infrared baking lamps 24 to operate. After the patient's foot is sprayed with the disinfectant, the infrared baking lamps 24 are started by the controller, and the mounting plate 7 can drive the infrared baking lamps 24 to swing around the patient's foot uniformly, so as to accelerate the volatilization of the disinfectant and at the same time, the patient's foot is kept warm, the blood flow of the patient's foot is ensured, and the imaging effect is improved.

[0047] As shown in Figure 5 The bottom of the top plate 2 is further provided with a fixing assembly for clamping the patient's lower leg; the fixing assembly comprises a fixing plate 26 screw-fixedly connected to the bottom of the top plate 2, a adjusting frame 27 screw-fixedly connected to the bottom of the fixing plate 26, a second electric control cylinder 28 (the maximum stroke is 200 mm) screw-fixedly connected to the inner top wall of the adjusting frame 27, a push rod 29 screw-fixedly connected to the output shaft of the second electric control cylinder 28, and triangular blocks 30 screw-fixedly connected to the two sides of the push rod 29; the inner side walls of the adjusting frame 27 are symmetrically hinged with bending blocks 31, and the top of each bending block 31 is in sliding fit with the adjacent triangular block 30; the controller is used for controlling the second electric control cylinder 28 to operate, so as to drive the push rod 29 to move; and the bottom of each of the push rod 29 and the bending block 31 is fixedly bonded with an annular air bag 32 (the maximum working pressure is not more than 15 kPa).

[0048] Specifically, in the initial state, the bottoms of the bending blocks 31 are away from each other (the maximum expansion interval is 200 mm, suitable for the lower leg size of 95% of adults), and the output shaft of the second electric control cylinder 28 is in a contracted state; the patient places the lower leg on the bottom wall in the placing frame 1, and the medical staff closes the top plate 2, in the process, the top plate 2 drives the fixing plate 26 and the adjusting frame 27 to rotate, so that the push rod 29 and the bending blocks 31 move close to the patient's lower leg; the medical staff starts the second electric control cylinder 28 through the controller, and the output shaft of the second electric control cylinder 28 drives the push rod 29 and the triangular blocks 30 to move downward synchronously, due to the extrusion of the triangular blocks 30, the upper ends of the bending blocks 31 are away from each other, the lower ends of the bending blocks 31 are close to each other (the minimum working interval is 55 mm, to ensure that it is suitable for children patients), and at the same time, the bottom of the push rod 29 also moves downward, and the three synchronously shrink inward, gradually clamping the patient's leg; through the design of the bending blocks 31 and the push rod 29, the device can stably clamp the legs of patients with different body types, improve the stability of the lower limbs of the patient, and ensure that the image acquisition can be smoothly performed.

[0049] In the actual laser imaging process, the patient's foot needs to be stabilized to ensure the stability of the collected images, and images of the patient's foot in different postures (such as dorsiflexion, plantar flexion, and neutral position) need to be taken for comparative analysis. The present embodiment can effectively fix different sizes of lower legs through the design of the push rod 29 and the bending block 31, thereby improving the stability of the patient's foot. At the same time, the patient's ankle can move, thereby collecting images of the patient's foot in different postures.

[0050] As shown in Figure 5 , the adjusting frame 27 is provided with a gas supply assembly for supplying gas to the air bag 32; the gas supply assembly includes a gas tank 33 symmetrically bolted and connected to the inner top wall of the adjusting frame 27; the top of each triangular block 30 is bolted and connected with a pump rod 34, the top of each pump rod 34 is bolted and connected with a pump plate 35, and the pump plate 35 is vertically slidingly matched with the inner side wall of the gas tank 33 adjacent thereto; each air bag 32 is in communication with the bottom of the gas tank 33, and the upper side wall of the gas tank 33 is provided with a gas vent hole.

[0051] Specifically, when the triangular block 30 moves downward with the push rod 29, the triangular block 30 will drive the pump rod 34 and the pump plate 35 to slide downward in the gas tank 33, thereby delivering the gas in the gas tank 33 to the air bag 32, causing the air bag 32 to expand, and the air bag 32 will gradually fit the patient's leg, thereby better fixing the patient's leg with the push rod 29 and the bending block 31, improving the stability of the patient's lower limb and the shooting stability; the soft air bag 32 will improve the comfort of clamping and avoid mechanical damage to the patient's leg. In this process, the smaller the diameter of the patient's lower leg, the greater the distance of the push rod 29 downward movement, and the greater the inflation amount of the air bag 32, so that the expansion degree of the air bag 32 matches the diameter of the patient's lower leg, further improving the clamping effect.

[0052] As shown in Figure 5 , the inner side wall of the adjusting frame 27 is symmetrically bolted and connected with a spring 36, and the end of the spring 36 away from the inner side wall of the adjusting frame 27 is bolted and connected with the upper part of the bending block 31 adjacent thereto. When the output shaft of the second electric control cylinder 28 is retracted, the spring 36 will push the bending block 31 to rotate and reset, so that the bottoms of the bending blocks 31 are away from each other, facilitating the user to put the leg between the bending blocks 31 in subsequent use.

[0053] As shown in Figure 5 , the adjusting frame 27 is bolted and connected with a limiting ring 37, and the push rod 29 is located in the limiting ring 37 and vertically slidingly matched therewith. The limiting ring 37 can provide stability for the vertical sliding of the push rod 29, and can also limit the triangular block 30 from moving downward beyond the top of the bending block 31, preventing the push rod 29 from being retracted.

[0054] The bottom wall in the placing frame 1 is fixedly bonded with a sponge layer 25. The sponge layer 25 can wrap the patient's foot bottom, improving the comfort and stability of the patient's foot bottom.

[0055] The specific implementation process is as follows:

[0056] In the initial state, the top plate 2 is in the open state (90°), the first electric control cylinder 8 and the second electric control cylinder 28 are in the contracted state, the bottom of the bending block 31 is away from each other, the control valve 16 is in the open state, the medical staff inputs the specified amount of concentrated disinfectant and water through the control valve 16, closes the control valve 16 after the input is completed, and places the patient's foot on the sponge layer 25, and then closes the top plate 2 (such as Figure 4 shown, 0°).

[0057] As shown in Figure 5 , after the top plate 2 is closed, the medical staff makes the output shaft of the second electric control cylinder 28 extend through the controller, the output shaft of the second electric control cylinder 28 pushes the push rod 29 and the triangular block 30 to move downward, and then the bottom of the bending block 31 is close to each other, and the triangular plate will drive the pump rod 34 and the pump plate 35 to move downward along the inner side wall of the air tank 33, so that the air bag 32 is inflated, and then the patient's calf is clamped and fixed.

[0058] As shown in Figure 4 , after the calf is fixed, the medical staff starts the driving part through the controller, so that the rotating shaft 4 drives the stirring rod 15 to rotate, and the concentrated disinfectant and water are mixed; the rotating shaft 4 also drives the inclined table 5 to rotate, so that the eccentric rod 6 is deflected, the eccentric rod 6 drives the rotating rod 10 and the limiting frame 11 to swing vertically along the limiting plate 12, the limiting frame 11 drives the piston rod 17 and the piston plate 18 to slide vertically in the piston box 19, so that the disinfectant in the liquid storage tank 14 is continuously pumped and discharged through the atomizing nozzle 23; the eccentric rod 6 also drives the mounting plate 7 and the atomizing nozzle 23 to swing, so as to expand the disinfection range.

[0059] Laser imaging mainly relies on the blood flow difference of the patient's foot (the flow difference is blue, and the flow difference is red), so during this process, the medical staff can start the infrared baking lamp 24, and the mounting plate 7 drives the infrared baking lamp 24 to uniformly heat the patient's foot, so as to ensure the blood flow of the patient's foot, and then ensure the imaging effect.

[0060] After disinfection and heat preservation are completed, the medical staff starts the laser imager 9, keeps the driving part running, and the eccentric rod 6 also drives the first electric control cylinder 8 and the laser imager 9 to swing when driving the mounting plate 7 to rotate. Since the limiting plate 12 limits the limiting frame 11 and the rotating rod 10, and the rotating rod 10 limits the eccentric rod 6, the eccentric rod 6 only drives the laser imager 9 to revolve around the patient's foot, and does not self-rotate, so as to ensure that the laser imager 9 can stably shoot;Figure 4 For example, when the medical staff needs to collect the image of the patient's foot, the convex side of the inclined table 5 is turned to the right side, and the inclined table 5 drives the top of the eccentric rod 6 to turn to the right side, at this time the limiting frame 11 slides upward along the limiting plate 12, so that the bottom of the eccentric rod 6 turns to the left side, and in turn drives the laser imaging instrument 9 to turn to the direction of the patient's foot.

[0061] Since the device only fixes the patient's lower leg, the patient's ankle can be freely rotated while ensuring the stability of the patient's lower limb, the medical staff can communicate with the patient and let the patient adjust the posture of the foot, and the medical staff can adjust the angle and position of the laser imaging instrument 9 at the same time, so as to realize more detailed and comprehensive image collection; for example, when the medical staff needs to collect the image of the right side of the patient's instep when the instep is straightened, the patient can straighten the instep, and then the laser imaging instrument 9 is turned to the right side of the instep, and then the first electric cylinder 8 is started through the controller to extend to the right side of the patient's instep, and detailed shooting is performed.

[0062] The embodiment can drive the laser imaging instrument 9 to rotate through the design of the inclined table 5 and the eccentric rod 6, so as to perform shooting at different angles for the patient's foot, thereby reducing the operation difficulty of image collection and improving the comprehensiveness of image collection.

[0063] The present application also designs the rotating rod 10, the limiting frame 11 and the limiting plate 12, so that the laser imaging instrument 9 only revolves around the patient's foot and does not self-rotate, thereby ensuring the shooting stability of the laser imaging instrument 9 when shooting the patient's foot at multiple angles, improving the imaging effect and improving the efficiency of image analysis and evaluation.

[0064] The embodiment is designed in an integrated manner, which can mix disinfectant, spray disinfectant and keep the foot warm while collecting images of the patient's foot, thereby improving the overall efficiency of the evaluation work.

[0065] Obviously, the above embodiments are only examples for clear illustration, and do not limit the embodiments. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. Laser speckle contrast imaging device for the evaluation of the perfusion of the microcirculation of the foot, comprising a laser imager (9), characterized in that, Also include the controller and the placement frame (1), the placement frame (1) top hinged with the top plate (2), the top plate (2) bottom fixedly connected with the drive element, the drive element output shaft is fixedly connected with the rotating shaft (4), the rotating shaft (4) bottom fixedly connected with the inclined table (5), the inclined table (5) bottom rotationally cooperates with the eccentric rod (6), the eccentric rod (6) bottom fixedly connected with the mounting plate (7), the mounting plate (7) bottom fixedly connected with the first electric cylinder (8), the first electric cylinder (8) output shaft and laser imager (9) fixedly connected;The eccentric rod (6) side wall rotationally cooperates with the rotating rod (10), the rotating rod (10) away from the eccentric rod (6) one end fixedly connected with the limit frame (11), the top plate (2) bottom is also fixedly connected with the limit plate (12), the limit plate (12) is located in the middle of the limit frame (11) and is vertically slidably connected with it.

2. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 1, characterized in that, The drive element outer fixedly provided with the protective frame (13), the protective frame (13) bottom is provided with the disinfection assembly for disinfecting the patient's foot;The protective frame (13) bottom fixedly connected with the liquid storage tank (14) for storing the disinfectant, the rotating shaft (4) penetrates the liquid storage tank (14) top wall and bottom wall and is rotationally connected with it, the rotating shaft (4) located in the liquid storage tank (14) part fixedly connected with a plurality of stirring rods (15);The liquid storage tank (14) is provided with a discharge assembly for filling and discharging disinfectant.

3. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 2, characterized in that, The discharge assembly includes a control valve (16) communicated with the side wall of the liquid storage tank (14), and the controller is used for controlling the operation of the control valve (16);The limit frame (11) outside wall is hinged with the piston rod (17), and the piston rod (17) top is hinged with the piston plate (18), and the limit plate (12) is fixedly connected with the piston box (19), and the piston plate (18) and the inner side wall of the piston box (19) are vertically slidably connected;The piston box (19) top and the liquid storage tank (14) are communicated, and the first one-way valve (20) for liquid inlet is communicated at the communication part of the two;The piston box (19) top is also communicated with the liquid discharge pipe, and the second one-way valve (21) for liquid discharge is communicated at the communication part of the two.

4. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 3, characterized in that, The mounting plate (7) bottom fixedly connected with a plurality of spray pipes (22), the spray pipe (22) bottom is fixedly connected with the atomizing nozzle (23);The liquid discharge pipe is communicated with the spray pipe (22).

5. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 4, characterized in that, The mounting plate (7) bottom fixedly connected with a plurality of infrared baking lamps (24), the controller is used for controlling the operation of the infrared baking lamp (24).

6. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 5, characterized in that, The bottom of the top plate (2) is further provided with a fixing assembly for clamping the lower leg of a patient; the fixing assembly comprises a fixing plate (26) fixedly connected to the bottom of the top plate (2), a adjusting frame (27) fixedly connected to the bottom of the fixing plate (26), a second electric control cylinder (28) fixedly connected to the inner top wall of the adjusting frame (27), a push rod (29) fixedly connected to the output shaft of the second electric control cylinder (28), and triangular blocks (30) fixedly connected to the two sides of the push rod (29); the inner side walls of the adjusting frame (27) are symmetrically hinged to bending blocks (31), and the top of each bending block (31) is in sliding fit with the adjacent triangular block (30); the controller is used for controlling the operation of the second electric control cylinder (28) to push the push rod (29) to move; the bottom of each of the push rod (29) and the bending block (31) is fixedly connected to an annular air bag (32).

7. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 6, characterized in that, The adjusting frame (27) is provided with a gas supply assembly for supplying gas to the air bag (32); the gas supply assembly comprises air tanks (33) fixedly connected to the inner top walls of the adjusting frame (27) in a symmetrical manner; the top of each triangular block (30) is fixedly connected to a pump rod (34), the top of each pump rod (34) is fixedly connected to a pump plate (35), and each pump plate (35) is in vertical sliding fit with the inner side wall of the adjacent air tank (33); each air bag (32) is in communication with the bottom of the adjacent air tank (33), and the upper side wall of each air tank (33) is provided with a gas passage hole.

8. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 7, characterized in that, The inner side walls of the adjusting frame (27) are fixedly connected to springs (36) in a symmetrical manner, and the upper part of each bending block (31) is fixedly connected to the end of the spring (36) away from the inner side wall of the adjusting frame (27).

9. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 8, characterized in that, The adjusting frame (27) is fixedly connected to a limiting ring (37), and the push rod (29) is located in the limiting ring (37) and vertically slides with the limiting ring (37).

10. The laser speckle contrast imaging device for foot microcirculation perfusion assessment according to claim 9, characterized in that, The inner bottom wall of the placing frame (1) is fixedly connected to a sponge layer (25).

Images