A special detecting instrument for skin scratch

Abstract

The utility model relates to medical instrument field especially relates to a special detection instrument of skin scratch symptom. Including test board etc. ; Four sliding holes are evenly opened in test board downside, four sliding holes are respectively slidably equipped with four press bars of different length, and the elastic member is connected between press bar and test board, the mounting groove is opened in the middle part of parallel plate, and the shape and size of mounting groove are adapted with the lower part of test board, the lower part of test board is equipped with strip bulge left and right sides, and the fixing groove that is adapted with strip bulge is opened in the mounting groove of parallel plate, and the lower part of test board is equipped with limit block left and right sides. The utility model discloses four press bars of different length, can exert different pressure to skin when testing, is helpful to judge skin scratch symptom inducing threshold, through the design of sliding hole, parallel plate and elastic member, can assist test board to keep vertical and not left and right tilt in the sliding process.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a special detection device for dermatographia. Background Technology

[0002] Dermatographic urticaria, also known as artificial urticaria or dermatographic urticaria, is the most common type of physically induced urticaria in clinical practice. It manifests as linear raised bumps appearing at the scratched area after the skin has been scratched or rubbed. The bumps are clearly demarcated from the surrounding normal skin, with redness visible at the edges, and are accompanied by itching.

[0003] The primary method for diagnosing dermatographia is the dermograph test. Typically, after disinfecting the skin on the outer upper arm or back of a patient with urticaria, a blunt instrument is used to scratch the skin with appropriate pressure. A positive dermograph test will produce the following three reactions: 1. A red line appears at the scratched area 3-15 seconds after scratching; 2. A red halo appears on both sides of the red line after 15-45 seconds; 3. A raised, pale wheal-like line appears at the scratched area 1-3 minutes after scratching. International consensus considers a positive dermographia diagnosis to occur when the skin produces a scratching response to a moderate stimulus of 353 kPa within 10 minutes.

[0004] Currently, skin scratch testing in domestic clinical practice is often not standardized. Most tests use instruments such as cards, fingernails, or the ends of cotton swabs. The relatively sharpness of these instruments, their lack of sterilization, and the inconsistent use of instruments and experimental techniques can all affect the patient's health and the accuracy of disease diagnosis. Furthermore, they cannot assess the dermatographia induction threshold. Existing dermatographia detectors are mostly composed of a flat plastic comb, including a rectangular plate and four cylinders at the ends. They must be held perpendicular to the skin during use, but in practice, it is difficult to achieve this perpendicularity and smoothness, resulting in poor detection results. Utility Model Content

[0005] In order to overcome the shortcomings of existing dermatographia detection instruments, which are difficult to slide perpendicularly to the skin in actual operation, resulting in poor detection results, this utility model provides a special detection instrument for dermatographia.

[0006] The technical solution of this utility model is: a special detection device for dermatographia, including a test plate, a parallel plate, a pressing rod, a limiting block, a long strip protrusion, and an elastic element. Four sliding holes are evenly distributed on the lower side of the test plate, and four pressing rods of different lengths are slidably mounted in the four sliding holes. An elastic element connects the pressing rods to the test plate. An installation groove is formed in the middle of the parallel plate, the shape and size of which are adapted to the lower part of the test plate. Long strip protrusions are provided on both the left and right sides of the lower part of the test plate. A fixing groove adapted to the long strip protrusions is formed in the installation groove of the parallel plate. Limiting blocks are provided on both the left and right sides of the lower part of the test plate. The test plate can be embedded into the installation groove of the parallel plate. At this time, the long strip protrusion is located in the fixing groove, the lower part of the limiting block is in contact with the parallel plate, and the lower side of the test plate and the lower side of the parallel plate are on the same horizontal plane.

[0007] Furthermore, the main body of the pressing rod is cylindrical with a diameter of 3mm.

[0008] Furthermore, it also includes a mounting block. The mounting block is located on the right side of the test plate. The front-to-back length of the mounting block is the same as that of the test plate. The mounting block has long protrusions on both the top and bottom sides. The mounting block can be embedded into the mounting groove of the parallel plate.

[0009] Furthermore, the lengths of the four pressing rods from front to back are 3.0mm, 3.5mm, 4.0mm, and 4.5mm, respectively.

[0010] Furthermore, the test plate is a 5cm*10cm*3mm plastic plate, and the parallel plate is a 5cm*6cm*3mm plastic plate.

[0011] Furthermore, the sides and eight corners of the parallel plate are all rounded.

[0012] The beneficial effects are as follows: 1. By designing four pressing rods of different lengths, this utility model can apply different pressures to the skin during testing, which helps to determine the threshold for dermatographia. Through the design of sliding holes, parallel plates and elastic elements, it can help the test plate to remain vertical and not tilt to the left or right during the sliding process, ensuring the accuracy of the test results.

[0013] 2. Through the design of the mounting block, the parallel plate can be embedded into the mounting block of the test plate when not in use, making it easy to carry as a whole; the sides and eight corners of the parallel plate are all designed to be rounded, reducing the possible accidental injury to the patient during use and improving safety and comfort. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the parallel plate, pressing rod, and mounting groove of this utility model.

[0016] Figure 3 This is an exploded view of the sliding hole, pressing rod, and elastic element of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the mounting block of this utility model embedded in the mounting groove of the parallel plate.

[0018] In the attached diagram, the following labels are used: 1_test plate, 11_sliding hole, 2_parallel plate, 3_pressing rod, 4_mounting groove, 41_fixing groove, 5_limiting block, 6_long strip protrusion, 7_mounting block, and 8_elastic element. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] A specialized diagnostic device for dermatographia, such as Figures 1-3 As shown, the device includes a test plate 1, a parallel plate 2, a pressing rod 3, a limiting block 5, a long strip protrusion 6, and an elastic element 8. Four sliding holes 11 are evenly distributed on the lower side of the test plate 1. Each of the four sliding holes 11 is equipped with a pressing rod 3 of different lengths, with the length of the four pressing rods 3 gradually increasing from front to back. An elastic element 8 connects the pressing rods 3 to the test plate 1, allowing the four pressing rods 3 to be completely submerged within the test plate 1. An installation groove 4 is formed in the middle of the parallel plate 2. The shape and size of the installation groove 4 are related to the test plate 1. The lower part of the test plate 1 is adapted, and there are long strip protrusions 6 on both the left and right sides of the lower part of the test plate 1. The mounting groove 4 of the parallel plate 2 has a fixing groove 41 that matches the long strip protrusions 6. There are limiting blocks 5 on both the left and right sides of the lower part of the test plate 1. The limiting blocks 5 are located above the long strip protrusions 6. The test plate 1 can be embedded into the mounting groove 4 of the parallel plate 2. At this time, the long strip protrusions 6 are located in the fixing groove 41. The lower part of the limiting block 5 is in contact with the parallel plate 2. The lower side of the test plate 1 and the lower side of the parallel plate 2 are on the same horizontal plane.

[0021] First, disinfect the test plate 1 and parallel plate 2. Then, embed the bottom of the test plate 1 into the mounting groove 4 of the parallel plate 2. The elongated protrusion 6 and the fixing groove 41 are used to fix the test plate 1. The limiting block 5 abuts against the parallel plate 2 to prevent the test plate 1 from moving excessively. Then, press the four pressing rods 3 and the test plate 1 perpendicular to the skin until all four pressing rods 3 are fully submerged in the test plate 1 and the parallel plate 2 is in contact with the skin. This helps prevent the test plate 1 from tilting left or right. Slide the test plate 1 along the skin for 10cm, keeping the parallel plate 2 in contact with the skin throughout the process to complete the skin scratch test. Afterward, the test plate 1 and the parallel plate 2 can be separated for easy carrying.

[0022] like Figures 1-4As shown, it also includes a mounting block 7. The mounting block 7 is located on the right side of the test plate 1. The front and back length of the mounting block 7 is the same as that of the test plate 1. The mounting block 7 has long strip protrusions 6 on both the top and bottom sides. The right end of the mounting block 7 has a chamfer. The mounting block 7 can be embedded into the mounting groove 4 of the parallel plate 2. When not in use, the parallel plate 2 is embedded into the mounting block 7 of the test plate 1. The fixing groove 41 and the long strip protrusions 6 ensure that the parallel plate 2 does not separate from the mounting block 7. At this time, the parallel plate 2 is close to the test plate 1, which is convenient for carrying.

[0023] The lengths of the four pressure rods 3 from front to back are 3.0mm, 3.5mm, 4.0mm and 4.5mm respectively. The main body of the pressure rod 3 is cylindrical with a diameter of 3mm. The different lengths of the pressure rods 3 can provide different pressures when used, which helps to determine the dermatographia induction threshold.

[0024] Test board 1 is a 5cm*10cm*3mm plastic board, and parallel board 2 is a 5cm*6cm*3mm plastic board. The dimensions of test board 1 and parallel board 2 are convenient for operation and carrying.

[0025] The sides and eight corners of the parallel plate 2 are rounded. The rounded edge design reduces the possibility of accidental injury to patients during use and improves safety and comfort.

[0026] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A diagnostic device for dermatographia, comprising a test plate (1), characterized in that: It also includes a parallel plate (2), a pressing rod (3), a limiting block (5), a long strip protrusion (6), and an elastic element (8). The test plate (1) has four sliding holes (11) evenly distributed on its lower side. The four sliding holes (11) are respectively equipped with four pressing rods (3) of different lengths. The pressing rods (3) are connected to the test plate (1) by an elastic element (8). The parallel plate (2) has a mounting groove (4) in the middle. The shape and size of the mounting groove (4) are adapted to the lower part of the test plate (1). The test plate (1) The lower left and right sides of the test plate (1) are provided with long strip protrusions (6). The mounting groove (4) of the parallel plate (2) is provided with a fixing groove (41) that matches the long strip protrusions (6). The lower left and right sides of the test plate (1) are provided with limiting blocks (5). The test plate (1) can be embedded into the mounting groove (4) of the parallel plate (2). At this time, the long strip protrusions (6) are located in the fixing groove (41). The lower part of the limiting block (5) is in contact with the parallel plate (2). The lower side of the test plate (1) and the lower side of the parallel plate (2) are on the same horizontal plane.

2. The dermatographia detection device according to claim 1, characterized in that: The main body of the pressing rod (3) is cylindrical with a diameter of 3mm.

3. The dermatographia detection device according to claim 2, characterized in that: It also includes an installation block (7). The right side of the test plate (1) is provided with an installation block (7). The front and back length of the installation block (7) is the same as the front and back length of the test plate (1). The upper and lower sides of the installation block (7) are provided with long strip protrusions (6). The installation block (7) can be embedded into the installation groove (4) of the parallel plate (2).

4. The dermatographia detection device according to claim 3, characterized in that: The lengths of the four pressing rods (3) from front to back are 3.0mm, 3.5mm, 4.0mm and 4.5mm respectively.

5. The dermatographia detection device according to claim 4, characterized in that: The test plate (1) is a 5cm*10cm*3mm plastic plate, and the parallel plate (2) is a 5cm*6cm*3mm plastic plate.

6. The dermatographia detection device according to claim 5, characterized in that: The sides and eight corners of the parallel plate (2) are all rounded.

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