Device and method for carrying out artificial urticaria diagnosis by using scratch ruler

Abstract

The invention relates to the technical field of medical instruments, in particular to a device for performing artificial urticaria diagnosis by using a scratch ruler, which comprises a base and a casing, the base is a plate body with two sides of the bottom raised, the casing is fixedly mounted on the base, the top of the casing is arched, arched openings are symmetrically formed in the front side and the rear side of the casing, and the scratch ruler is fixedly mounted on the casing. Drooping dustproof curtains are assembled at the openings of the machine shell; the robot further comprises electric sliding rails and a scratching ruler, the electric sliding rails are symmetrically installed on the inner walls of the left side and the right side of the machine shell, and the scratching ruler used for scratching the skin of the arm is installed between the two electric sliding rails. The pressure sensor and the first air cylinder are linked to adjust the downward pressing force of the scratching rod in real time, it is ensured that the scratching rod conducts scratching operation on the arm of a patient with the same force and speed, scratched artificial urticaria meets the medical standard, manual operation errors are avoided, and scratching consistency and diagnosis reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device and method for diagnosing artificial urticaria using a scratch ruler. Background Art

[0002] Artificial urticaria, also known as skin scratching, is an allergic reaction of the skin blood vessels. It is a skin disease caused by the combined effects of physical induction and allergic reaction. This disease is usually chronic and recurrent. Its main feature is that when the skin is scratched or rubbed, strip-like ridges will appear at the scratches. These ridges are clearly demarcated from the surrounding normal skin and are often accompanied by redness at the edges. In addition, patients will also feel obvious itching.

[0003] The existing diagnosis of artificial urticaria usually relies on doctors to scratch the patient's skin surface and observe whether a typical wheal reaction occurs. Although this diagnostic method is direct and effective, it has certain limitations. First, since the symptoms of artificial urticaria vary in severity, including suspected false negatives, simple skin scratches, and symptomatic skin scratches, the requirements for the scratching operation are high, and the diagnostic results are easily affected by the doctor's operating experience; secondly, the elderly and children may also suffer from the disease, which makes it more difficult to control the scratching force and ensure the uniformity of the scratches, resulting in affected diagnostic accuracy, and it is difficult to evaluate the induction threshold of skin scratches. Therefore, we propose a device and method for diagnosing artificial urticaria using a scratch ruler to overcome the above defects. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a device and method for diagnosing artificial urticaria using a scratch ruler.

[0005] Technical solution: A device for diagnosing artificial urticaria using a scratch ruler, comprising a base and a casing, wherein the base is a load-bearing carrier of the device, the base is a plate body with raised bottom sides, the casing is fixedly mounted on the base, the top shell of the casing is arched, the front and rear sides of the casing are symmetrically provided with arched openings, and the openings of the casing are equipped with drooping dust curtains; it also comprises an electric slide rail and a scratch ruler, the electric slide rails are symmetrically installed on the left and right inner walls of the casing, and a scratch ruler for scratching arm skin is installed between the two electric slide rails; the scratch ruler comprises: a ruler body, which is slidably installed between the electric slide rails on both sides through a mounting block, and the ruler body has an opening inside There is a sliding cavity; a slider is slidably mounted in the sliding cavity of the ruler body, a plurality of scratching rods are fixedly connected at intervals at the bottom of the slider, the scratching surface at the lower end of the scratching rod is an arc surface, the scratching rod of the slider slides downward and penetrates the ruler body, and the scratching rod is used to contact the patient's skin and scratch; a first cylinder is fixedly mounted on the top of the ruler body, and the piston rod of the first cylinder slides through the ruler body and is connected to the slider; a pressure sensor is embedded in the bottom surface of the rod body of the scratching rod, the contact of the pressure sensor protrudes at the bottom end of the scratching rod, the pressure sensor is electrically connected to the first cylinder through the built-in controller, and the pressure sensor is used to sense the pressure when the scratching rod contacts the skin.

[0006] As an improvement of the above scheme, scratch guide rails are symmetrically installed on the inner walls on the left and right sides of the casing, and the scratch guide rails are located below the electric slide rails on the same side. The middle guide rail of the scratch guide rails is recessed downward for a section, and connecting rods are symmetrically fixed on both sides of the outer wall of the ruler body. The ruler body is slidably connected to the scratch guide rails through the connecting rods, and the ruler body and the slider are slidably matched through the guide rods. The scratch guide rails cooperate with the connecting rods and are used to smoothly guide the scratch ruler.

[0007] As an improvement of the above scheme, at least two first induction sensors are symmetrically installed on the top outer shell of the ruler body, the sensing direction of the first induction sensors is vertically upward, the first induction sensors have a built-in controller and are used to control the opening and closing of the electric slide rail, and second induction sensors are installed on the inner wall of the casing close to both ends of the electric slide rail, the sensing direction of the second induction sensors is vertically downward, and the second induction sensors are used to cooperate with the first induction sensors, when the first induction sensor on the ruler body senses the second induction sensor, the first induction sensor can automatically control the electric slide rail to close through the built-in controller, thereby realizing automatic control of the scratch ruler to move back and forth in the casing and automatically stop after scratching.

[0008] As an improvement on the above scheme, a hand support pad is slidably connected to the middle part of the base, and the hand support pad is an arc-shaped pad with both sides slightly curved upward. No less than two second cylinders are fixedly installed on the bottom surface of the base, and the piston rods of the second cylinders slide through the base and are connected to the hand support pad. A position sensor is provided on the inner wall of the casing, and the position sensor has a built-in controller for controlling the second cylinder. The hand support pad is used to lift the patient's scratched arm, and cooperates with the position sensor to monitor the highest point of the arm lifted horizontally by the hand support pad, and timely controls the second cylinder to stop through the controller, so that the scratch ruler can adapt to patients with different arms for scratching operations.

[0009] As an improvement of the above-mentioned solution, a plurality of dermatoscopes are installed on the top of the inner wall of the casing. The dermatoscopes are distributed in various corners of the inner wall of the casing and are used to photograph scratches on the arm in real time. A medical-grade display is installed on the top of the casing. The dermatoscope and the medical-grade display are connected via a media signal. The medical-grade display is used to display in real time the image of urticaria that appears on the arm after the scratches are photographed by the dermatoscope.

[0010] As an improvement on the above-mentioned scheme, a limiting assembly for accurately limiting the patient's arm is provided in the casing, and the limiting assembly includes an elastic block, a sliding rod, a connecting plate and a third cylinder. The casing on both sides of the casing close to the base is slidably connected with multiple elastic blocks through sliding rods at intervals. The elastic blocks are located inside the casing, and the sliding rods on the elastic blocks on the same side are connected into a whole through connecting plates. The third cylinder is also fixedly installed on the two side casings of the casing, and the piston rod of the third cylinder is connected to the connecting plate on the same side. The extension and retraction of the piston rod of the third cylinder can drive the corresponding connecting plate to move, so that the connecting plates on both sides drive the elastic blocks in the casing through the sliding rods to center the arm placed on the base.

[0011] As an improvement of the above-mentioned scheme, an air pump is fixedly installed on the outer wall of the casing, and a plurality of nozzles are installed on the upper part of the casing shell. The nozzles are facing the hand support pad inside the casing. The air outlet of the air pump is connected to each nozzle through an air pipe. A refrigerator is also installed on the outer wall of the casing, and the air inlet of the air pump is connected to the refrigerator through a pipeline.

[0012] As an improvement of the above scheme, a method for using a device for diagnosing artificial urticaria using a scratch ruler comprises the following steps:

[0013] S1. Place the patient's arm on the hand rest pad of the base, start the third cylinder to drive the elastic block of the limit assembly to slide inward, the elastic block limits the patient's arm to be centered on the surface of the hand rest pad, and at the same time cooperates with the position sensor to control the second cylinder, which can automatically adjust the height of the hand rest pad to a preset position according to the thickness of the arm, so that the arm and the scratch ruler are kept vertically aligned;

[0014] S2. Start the electric slide rail to drive the scratch ruler to move horizontally. The first cylinder pushes the slider and multiple scratch rods down to the surface of the arm skin. The pressure sensor monitors the contact pressure of the scratch rod in real time and dynamically adjusts the downward pressure to a preset threshold. The scratch ruler completes a uniform scratching action along the concave track of the scratch rail. The dermatoscope synchronously captures the state after scratching and displays the skin reaction image in real time through a medical-grade display;

[0015] S3. After the scratch ruler has finished scratching the arm, the doctor will conduct a diagnosis and analysis based on the real-time urticaria image displayed on the monitor. After the diagnosis is completed, the air pump will continuously spray the low-temperature airflow generated by the refrigerator to the urticaria area through the nozzle to relieve redness, swelling and itching.

[0016] Beneficial effects: 1. The present invention uses a pressure sensor to link with the first cylinder to adjust the downward pressure of the scratch rod in real time, ensuring that the scratch rod scratches the patient's arm with the same force and speed, so that the artificial urticaria after scratching meets medical standards, avoids manual operation errors, and improves scratch consistency and diagnostic reliability.

[0017] 2. The present invention can center the patient's arm by using the second cylinder to adjust the height of the hand rest pad and the third cylinder to drive the limit assembly, ensuring that the device can adapt to arms of different thicknesses, and integrating a dermatoscope and a medical-grade display to capture and display images of urticaria reactions after scratches in real time, helping doctors to quickly analyze skin conditions and shorten the diagnosis cycle.

[0018] 3. The present invention utilizes the cold air generated by the refrigerator to act directly on the patient's arm through the nozzle, which helps to relieve the skin redness, swelling and itching caused by urticaria and improve the patient's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 The figure is a connection diagram of the base, housing, electric slide rail and scratch ruler of the present invention.

[0021] Figure 3 It is a schematic diagram of the base, housing, dust curtain, electric slide rail and scratch guide rail of the present invention.

[0022] Figure 4 It is a schematic diagram of the matching relationship between the ruler body, the first cylinder and the scratching rod of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the base, the hand support pad, the position sensor and the second cylinder of the present invention.

[0024] Figure 6 This is a diagram showing the positional relationship among the housing, dermatoscope and medical-grade display of the present invention.

[0025] Figure 7 It is a schematic diagram of specific parts of the base, housing and limiting assembly of the present invention.

[0026] Figure 8 The figure is a connection diagram of the housing, air pump, nozzle, air pipe and refrigerator of the present invention.

[0027] Markings in the figure are: 1-base, 2-casing, 3-dust curtain, 4-electric slide rail, 5-scratch ruler, 51-rule body, 52-mounting block, 53-slider, 54-scratch rod, 55-first cylinder, 56-pressure sensor, 6-scratch guide rail, 61-connecting rod, 7-first induction sensor, 71-second induction sensor, 8-hand support pad, 81-second cylinder, 82-position sensor, 9-dermatoscope, 10-medical grade display, 11-limiting assembly, 111-elastic block, 112-sliding rod, 113-connecting plate, 114-third cylinder, 12-air pump, 121-nozzle, 122-air pipe, 13-refrigerator. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] Embodiment 1: A device for diagnosing artificial urticaria using a scratch ruler, such as Figure 1-Figure 4As shown, it includes a base 1 and a casing 2. The base 1 is a load-bearing carrier of the device. The base 1 is a plate body with raised bottom sides. The casing 2 is fixedly installed on the base 1. The top shell of the casing 2 is arched. Arched openings are symmetrically opened on the front and back sides of the casing 2. The openings of the casing 2 are equipped with drooping dust curtains 3; it also includes electric slide rails 4 and a scratch ruler 5. The electric slide rails 4 are symmetrically installed on the inner walls of the left and right sides of the casing 2. A scratch ruler 5 for scratching arm skin is installed between the two electric slide rails 4; the scratch ruler 5 includes: The ruler body 51 is slidably mounted between the electric slide rails 4 on both sides through the mounting block 52. A sliding cavity is provided inside the ruler body 51. A slider 53 is slidably mounted in the sliding cavity of the ruler body 51. A plurality of scratching rods 54 are fixedly connected to the bottom of the slider 53 at intervals. The scratching surface of the lower end of the scratching rod 54 is an arc surface. The scratching rod 54 of the slider 53 slides downward and penetrates the ruler body 51. The scratching rod 54 is used to contact the patient's skin and scratch. The first cylinder 55 is fixedly mounted on the top of the ruler body 51. The piston rod of the first cylinder 55 slides After the ruler body 51 is moved through, it is connected to the slider 53; the pressure sensor 56 is embedded and installed on the bottom surface of the rod body of the scratch rod 54, and the contact of the pressure sensor 56 protrudes at the bottom end of the scratch rod 54. The pressure sensor 56 is electrically connected to the first cylinder 55 through the built-in controller. The pressure sensor 56 is used to sense the pressure when the scratch rod 54 contacts the skin. The patient extends his arm into the housing 2, and then the slider 53 and multiple scratch rods 54 are driven downward by the first cylinder 55 to contact the skin of the patient's arm. At this time, the pressure sensor 56 on the contact end surface of the scratch rod 54 can sense the pressure of squeezing the skin. The pressure sensor 56 controls the extension amount of the piston rod of the first cylinder 55 through the built-in controller according to the preset value, so that the scratch rod 54 can press the arm skin with a suitable scratching pressure, and the electric slide rail 4 is used to drive the entire scratch ruler 5 to slide once in the housing 2. Multiple scratch rods 54 can automatically complete the scratching operation on the patient's arm, so that the scratches on the patient's arm are standardized and consistent, which is convenient for subsequent doctors to diagnose according to the artificial urticaria generated on the arm.

[0030] like Figure 3 and Figure 4As shown, scratch guide rails 6 are symmetrically installed on the inner walls on the left and right sides of the housing 2. The scratch guide rails 6 are located below the electric slide rail 4 on the same side. The middle part of the scratch guide rail 6 is recessed downward. Connecting rods 61 are symmetrically fixed on both sides of the outer wall of the ruler body 51. The ruler body 51 is slidably connected to the scratch guide rail 6 through the connecting rod 61. The ruler body 51 and the slider 53 are slidably matched through the guide rod. The scratch guide rail 6 cooperates with the connecting rod 61 and is used to smoothly guide the scratch ruler 5. When the electric slide rail 4 drives the scratch ruler 5 When sliding to the recessed part of the scratch guide rail 6, the scratch guide rail 6 presses down the connecting rod 61 on the ruler body 51, and under the guidance of the guide rod of the slider 53, the scratch rod 54 can better contact and press the arms of different patients, and cooperate with the pressure sensor 56 to sense the pressure of the scratch rod 54 contacting the skin. When the electric slide rail 4 drives the scratch ruler 5 to slide away from the recessed part of the scratch guide rail 6, the scratch ruler 5 can be automatically lifted again, thereby making the scratch ruler 5 adapt to the arms of different people for scratching operations, thereby improving the application range of the device.

[0031] like Figure 2 , Figure 5 and Figure 6 As shown, a hand support pad 8 is slidably connected to the middle part of the base 1. The hand support pad 8 is an arc-shaped pad with both sides slightly bent upward. Two second cylinders 81 are fixedly installed on the bottom surface of the base 1. The piston rod of the second cylinder 81 slides through the base 1 and is connected to the hand support pad 8. A position sensor 82 is provided on the inner wall of the casing 2. The position sensor 82 has a built-in controller and is used to control the second cylinder 81 to automatically close during the lifting process. The hand support pad 8 is used to lift the patient's scratched arm, and cooperates with the position sensor 82 to monitor the highest point of the arm lifted horizontally by the hand support pad. Once the position sensor 82 senses the highest point of the arm, the controller can promptly control the second cylinder 81 to stop, so that the scratch ruler 5 can adapt to the patients' arms of different thicknesses for scratching operations.

[0032] like Figure 2 , Figure 6 and Figure 7 As shown, a limiting assembly 11 for accurately limiting the patient's arm is provided in the casing 2, and the limiting assembly 11 includes an elastic block 111, a sliding rod 112, a connecting plate 113 and a third cylinder 114. The casing 2 is close to the base 1 at both sides of the casing 2 and is slidably connected with a plurality of elastic blocks 111 at intervals through the sliding rod 112. The elastic block 111 is located inside the casing, and the sliding rod 112 on the elastic block 111 on the same side is connected into a whole through the connecting plate 113. The third cylinder 114 is also fixedly installed on the two side casings of the casing 2, and the piston rod of the third cylinder 114 is connected to the connecting plate 113 on the same side. The extension and retraction of the piston rod of the third cylinder 114 can drive the corresponding connecting plate 113 to move, so that the connecting plates 113 on both sides drive the elastic block 111 to center the arm placed on the base 1 in the casing 2 through the sliding rod 112, so that the arm can be accurately placed on the hand rest pad 8 to complete the scratching operation.

[0033] When using the device to assist in manual diagnosis of urticaria, the patient first passes the arm through the dust curtain 3 and extends it into the casing 2 and places it flat on the arc-shaped pad of the hand support pad 8. The hand support pad 8 is designed as an arc-shaped pad with both sides slightly bent upward, which can better fit and fix the arm. At this time, in order to ensure that the arm remains stable and centered during the scratching process, the third cylinder 114 on both sides is activated. The piston rod of the third cylinder 114 synchronously drives the connecting plates 113 on both sides to drive the elastic block 111 to slide inward along the sliding rod 112. The elastic block 111 fixes the arm in the center in a flexible clamping manner to ensure that the axis of the arm is vertically aligned with the scratch ruler 5. At the same time, the second cylinder 81 is activated according to the thickness of the patient's arm. The second cylinder 81 drives the hand support pad 8 to adjust the support height. When the position sensor 82 senses the highest point of the horizontal arm on the hand support pad 8, the position sensor 82 shuts down the second cylinder 81 through the built-in controller, so that the hand support pad 8 The height stops at a suitable scratch diagnosis height, and then the electric slide rail 4 is activated. The electric slide rail 4 drives the scratch ruler 5 to move laterally along the inner wall of the casing 2. When the scratch ruler 5 slides to the recessed section of the scratch guide rail 6, the guide rail presses down the ruler body 51 through the connecting rod 61, so that the multiple scratch rods 54 on the ruler body 51 move down and contact the skin. At this time, the pressure sensor 56 monitors the contact pressure between the scratch rod 54 and the skin in real time, and dynamically adjusts the extension amount of the piston rod of the first cylinder 55 through the built-in controller, so that the scratch rod 54 evenly presses the skin surface with a preset pressure, and in this process, the recessed track of the scratch guide rail 6 is used to ensure that the scratch rod 54 maintains a constant downward pressure depth on the arms of different patients, and the electric slide rail 4 drives multiple scratch rods 54 at a uniform speed to complete multiple parallel scratches at one time, which significantly improves the standardization and consistency of the scratches on the patient's arm skin, and helps to improve the accuracy of subsequent doctors in diagnosing artificial urticaria.

[0034] Embodiment 2: Based on embodiment 1, Figure 3-Figure 4 As shown, two first sensing sensors 7 are symmetrically installed on the top shell of the ruler body 51, and the sensing direction of the first sensing sensor 7 is vertically upward. The first sensing sensor 7 has a built-in controller and is used to control the opening and closing of the electric slide rail 4. Second sensing sensors 71 are installed on the inner wall of the casing 2 near the two ends of the electric slide rail 4. The sensing direction of the second sensing sensor 71 is vertically downward. The second sensing sensor 71 is used to cooperate with the first sensing sensor 7. When the first sensing sensor 7 on the ruler body 51 senses the second sensing sensor 71, the first sensing sensor 7 can automatically control the electric slide rail 4 to close through the built-in controller, thereby realizing automatic control of the scratch ruler 5 to move back and forth in the casing 2 and automatically stop after scratching. The user only needs to control the opening of the electric slide rail 4.

[0035] like Figure 2 and Figure 6As shown, a plurality of dermatoscopes 9 are installed on the top of the inner wall of the casing 2. The dermatoscopes 9 are distributed in various corners of the inner wall of the casing 2 and are used to photograph scratches on the arm in real time. A medical-grade display 10 is installed on the top of the casing 2. The dermatoscopes 9 and the medical-grade display 10 are connected via media signals. The medical-grade display 10 is used to display in real time the image of urticaria that appears on the arm after the dermatoscope 9 photographs the scratches, thereby facilitating the doctor to observe the urticaria on the arm through the medical-grade display 10 and make a diagnosis.

[0036] like Figure 1 and Figure 8 As shown, an air pump 12 is fixedly installed on the outer wall of the casing 2, and a plurality of nozzles 121 are installed on the upper part of the shell of the casing 2. The nozzles 121 face the hand rest pad 8 inside the casing 2. The air outlet of the air pump 12 is connected to each nozzle 121 through an air pipe 122. A refrigerator 13 is also installed on the outer wall of the casing 2. The air inlet of the air pump 12 is connected to the refrigerator 13 through a pipeline. After the diagnosis of the patient's scratched arm is completed, the air pump 12 is used to input the cold air generated by the refrigerator 13 into each nozzle 121 through the air pipe 122, and then the nozzles 121 are used to spray the cold air onto the skin of the patient's arm where the hives are, thereby helping to relieve the skin redness, swelling and itching caused by the hives.

[0037] When the scratch ruler 5 moves to the two ends of the housing 2 to scratch, the first induction sensor 7 on the ruler body 51 interacts with the second induction sensor 71 on the inner wall of the housing 2 to trigger the electric slide rail 4 to stop automatically, thereby improving the degree of automation of the scratching process of the scratch ruler 5. When the scratch ruler 5 completes a scratching operation on the patient's arm skin, the multi-angle dermatoscope 9 on the top of the housing 2 takes a high-definition image of the scratched area in real time and transmits the image to the medical-grade display 10, so that the doctor can simultaneously observe the erythema, wheal and other urticaria caused by mechanical stimulation on the skin surface Rash reaction characteristics, after the diagnosis is completed, the refrigerator 13 is activated and a low-temperature airflow is generated, and then the air pump 12 is used to transport the cold air through the air pipe 122 to the nozzle 121 on the upper part of the casing 2. The nozzle 121 evenly sprays high-speed cold air to the urticaria area on the patient's arm, relieves redness, swelling and itching by contracting blood vessels at low temperature, and accelerates the relief of artificial urticaria on the patient's arm after diagnosis. During the entire scratch and diagnosis process, the patient's arm is in the casing 2, and the dust curtain 3 is used to effectively block external dust interference, thereby improving the safety and hygiene of the diagnosis.

[0038] A method for using a device for diagnosing artificial urticaria using a scratch ruler comprises the following steps:

[0039] S1, place the patient's arm on the hand support pad 8 of the base 1, start the third cylinder 114 to drive the elastic block 111 of the limiting assembly 11 to slide inward, the elastic block 111 limits the patient's arm to be centered on the surface of the hand support pad 8, and at the same time cooperates with the position sensor 82 to control the second cylinder 81, which can automatically adjust the height of the hand support pad 8 to a preset position according to the thickness of the arm, so that the arm and the scratch ruler 5 are kept vertically aligned;

[0040] S2, start the electric slide rail 4 to drive the scratch ruler 5 to move horizontally, the first cylinder 55 pushes the slider 53 and the multiple scratch rods 54 down to the surface of the arm skin, the pressure sensor 56 monitors the contact pressure of the scratch rod 54 in real time and dynamically adjusts the downward pressure to a preset threshold, the scratch ruler 5 completes a uniform scratching action along the concave track of the scratch guide rail 6, and the dermatoscope 9 synchronously captures the state after scratching and displays the skin reaction image in real time through the medical-grade display 10;

[0041] S3. After the scratch ruler 5 has finished scratching the arm, the doctor performs a diagnosis and analysis based on the real-time urticaria image displayed on the display. After the diagnosis is completed, the air pump 12 continuously sprays the low-temperature airflow generated by the refrigerator 13 to the urticaria area through the nozzle 121 to relieve the redness, swelling and itching.

[0042] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A device for diagnosing artificial urticaria using a scratch ruler, comprising a base (1) and a housing (2), wherein the housing (2) is fixedly mounted on the base (1), openings are symmetrically arranged on both sides of the housing (2), and dust curtains (3) are installed at the openings of the housing (2); Its characteristics are: It also includes an electric slide rail (4) and a scratch ruler (5), wherein the electric slide rails (4) are symmetrically mounted on the inner walls of both sides of the housing (2), and the scratch ruler (5) is mounted between the two electric slide rails (4); The scratch ruler (5) comprises: The ruler body (51) is slidably mounted between the electric slide rails (4) on both sides through the mounting block (52), and a sliding cavity is provided inside the ruler body (51); A slider (53) is slidably mounted in the sliding cavity of the ruler body (51), a plurality of scratching rods (54) are fixedly connected to the bottom of the slider (53) at intervals, and the scratching rods (54) of the slider (53) slide downward and penetrate the ruler body (51); A first cylinder (55) is fixedly mounted on the top of the ruler body (51), and a piston rod of the first cylinder (55) slides through the ruler body (51) and is connected to the slider (53); The pressure sensor (56) is embedded in the bottom surface of the rod body of the scratching rod (54), and the contact of the pressure sensor (56) protrudes from the bottom end of the scratching rod (54). The pressure sensor (56) is electrically connected to the first cylinder (55) through a built-in controller.

2. A device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 1, characterized in that: Scratching guide rails (6) are symmetrically mounted on the inner walls on the left and right sides of the housing (2). The scratching guide rails (6) are located below the electric slide rails (4) on the same side. The middle guide rail of the scratching guide rails (6) is recessed downward for a section. Connecting rods (61) are symmetrically fixed to the outer walls of the ruler body (51). The ruler body (51) is slidably connected to the scratching guide rails (6) through the connecting rods (61). The ruler body (51) and the slider (53) are slidably matched through the guide rods.

3. A device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 2, characterized in that: At least two first inductive sensors (7) are symmetrically mounted on the top outer shell of the ruler body (51), the inductive direction of the first inductive sensors (7) is vertically upward, the first inductive sensor (7) has a built-in controller and is used to control the opening and closing of the electric slide rail (4), and second inductive sensors (71) are mounted on the inner wall of the housing (2) near both ends of the electric slide rail (4), the inductive direction of the second inductive sensors (71) is vertically downward, and the second inductive sensors (71) are used to cooperate with the first inductive sensors (7).

4. A device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 3, characterized in that: A hand support pad (8) is slidably connected to the middle of the base (1), and the hand support pad (8) is an arc-shaped pad with both sides slightly curved upwards. No less than two second cylinders (81) are fixedly installed on the bottom surface of the base (1), and the piston rods of the second cylinders (81) slide through the base (1) and are connected to the hand support pad (8). A position sensor (82) is provided on the inner wall of the casing (2), and the position sensor (82) has a built-in controller and is used to control the second cylinders (81).

5. A device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 4, characterized in that: A plurality of dermatoscopes (9) are mounted on the top of the inner wall of the housing (2), and a medical-grade display (10) is mounted on the top of the housing (2). The dermatoscopes (9) and the medical-grade display (10) are connected via a media signal, and the medical-grade display (10) is used to display in real time the urticaria image captured by the dermatoscope (9).

6. The device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 5, characterized in that: A limiting assembly (11) for accurately limiting the position of the patient's arm is provided in the casing (2), and the limiting assembly (11) comprises an elastic block (111), a sliding rod (112), a connecting plate (113) and a third cylinder (114). The casings on both sides of the casing (2) close to the base (1) are connected to a plurality of elastic blocks (111) at intervals and slidingly via the sliding rods (112). The elastic blocks (111) are located inside the casings, and the sliding rods (112) on the elastic blocks (111) on the same side are connected to form a whole via the connecting plate (113). The third cylinder (114) is also fixedly mounted on the casings on both sides of the casing (2), and the piston rod of the third cylinder (114) is connected to the connecting plate (113) on the same side.

7. A device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 6, characterized in that: An air pump (12) is fixedly mounted on the outer wall of the casing (2); a plurality of nozzles (121) are mounted on the upper portion of the shell of the casing (2); the nozzles (121) face the hand support pad (8) inside the casing (2); an air outlet of the air pump (12) is connected to each nozzle (121) via an air supply pipe (122); a refrigerator (13) is also mounted on the outer wall of the casing (2); an air inlet of the air pump (12) is connected to the refrigerator (13) via a pipeline.

8. A method for using a device for diagnosing artificial urticaria using a scratch ruler, c using the device for diagnosing artificial urticaria using a scratch ruler as claimed in claim 7, characterized in that: The following steps are involved: S1. The patient's arm is placed on the hand support pad (8) of the base (1), and the third cylinder (114) is started to drive the elastic block (111) of the limiting assembly (11) to slide inward, so that the elastic block (111) limits the patient's arm to be centered on the surface of the hand support pad (8), and at the same time cooperates with the position sensor (82) to control the second cylinder (81), so that the height of the hand support pad (8) can be automatically adjusted to a preset position according to the thickness of the arm, so that the arm and the scratch ruler (5) are kept vertically aligned; S2, start the electric slide rail (4) to drive the scratch ruler (5) to move horizontally, the first cylinder (55) pushes the slider (53) and the plurality of scratch rods (54) down to the surface of the arm skin, the pressure sensor (56) monitors the contact pressure of the scratch rod (54) in real time and dynamically adjusts the downward pressure to a preset threshold, the scratch ruler (5) completes a uniform speed scratching action along the concave track of the scratch guide rail (6), the dermatoscope (9) synchronously captures the state after scratching and displays the skin reaction image in real time through the medical-grade display (10); S3. After the scratch ruler (5) has finished scratching the arm, the doctor performs a diagnosis and analysis based on the real-time urticaria image displayed on the display. After the diagnosis is completed, the air pump (12) continuously sprays the low-temperature airflow generated by the refrigerator (13) to the urticaria area through the nozzle (121) to relieve the redness, swelling and itching.

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