Sampling device for children dermatology department

Abstract

The invention provides a children dermatological sampling device which comprises a sampler body, a sampling head and a sampling knife, the sampling head is detachably connected with a groove through a connecting structure, the sampling knife is telescopically mounted in the sampling head, one side of the sampling head is provided with a sample collecting groove, the sample collecting groove is communicated with the sampling knife, and the sampling knife is arranged in the sampling head. A suction hole is formed in the outer wall of the side, close to the sample collecting groove, of the sampling head and used for being connected with a suction device, the sampler body is connected with a cold compress mechanism, the cold compress mechanism is further communicated with the sampling head, a disinfectant liquid groove is formed in the sampler body, a liquid channel communicated with the disinfectant liquid groove is formed in the sampling head, and aseptic cotton is arranged in the liquid channel. One side of the aseptic cotton is connected with a fixing rod, the fixing rod penetrates through the liquid channel to be connected with the sampling knife, a guide groove for the fixing rod to slide is formed in the inner wall of the liquid channel, and through the cold compress mechanism and the aspirator, the pains of children are relieved under the condition that anesthetics are not injected, and the sampling efficiency and comfort are improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a sampling device for children's dermatology. Background Art

[0002] During the diagnosis and treatment of pediatric dermatology, it is often necessary to take samples of the child's skin tissue for examination. However, traditional sampling methods are often accompanied by pain, and the disinfection after sampling may not be timely or thorough, increasing the risk of infection. Especially for pediatric patients, due to their delicate skin and low cooperation, traditional sampling methods are more difficult and easily cause fear and resistance in children.

[0003] There are at least the following problems that have not been solved in the prior art: 1. In the prior art, when sampling, most of the sampling areas of patients are disinfected at one time after the sampling is completed. The sampling device does not have the function of disinfecting while sampling. This method easily increases the risk of infection in the patient's sampling area.

[0004] 2. The dermatological samplers in the prior art do not have a cold compress mechanism, and sampling from patients is often accompanied by pain, especially for child patients. The strong pain makes it difficult for children to cooperate with the sampling, affecting the sampling efficiency.

[0005] 3. In the prior art, a spiral structure is used to fix the sampling head and the sampler body. The spiral structure connection needs to be rotated multiple times to achieve connection or disassembly, which increases the complexity and time cost of the operation, which is particularly inconvenient for application scenarios that require frequent replacement of the sampling head.

[0006] 4. In the prior art, when using the scraper on the sampling head for sampling, it is easy to fail to completely recover the sample, which may easily lead to sample loss and environmental pollution.

[0007] The object of the present invention is to provide a sampling device for children's dermatology to solve the problems mentioned in the above background technology. Summary of the invention

[0008] To achieve the above-mentioned purpose, the present invention provides a sampling device for pediatric dermatology, comprising a sampler body, a sampling head, and a sampling knife, wherein a groove for connecting to the sampling head is provided at the bottom end of the sampler body, the sampling head is detachably connected to the groove through a connecting structure, the sampling knife is telescopically installed inside the sampling head, a sample collecting groove is provided on one side of the sampling head, the sample collecting groove is communicated with the sampling knife, a suction hole is provided on the outer wall of the sampling head close to the sample collecting groove, the suction hole is used to connect a suction device, the sampler body is connected to a cold compress mechanism, the cold compress mechanism is also communicated with the sampling head, a disinfectant liquid tank is provided on the sampler body, a liquid channel communicated with the disinfectant liquid tank is provided on the sampling head, a disinfectant cotton is provided in the liquid channel, a fixing rod is connected to one side of the disinfectant cotton, the fixing rod passes through the liquid channel and is connected to the sampling knife, and a guide groove for sliding the fixing rod is provided on the inner wall of the liquid channel.

[0009] As a further improvement of the present invention, the cold compress mechanism includes an air cooler, a cold air channel one, and a cold air channel two. The cold air channel one is arranged at the internal center of the sampler body. A cold air pipe is provided on the top of the cold air channel one, and the cold air pipe is connected to the air cooler. The cold air channel two is arranged at the internal center of the sampling head, and the cold air channel two is connected to the cold air channel one.

[0010] As a further improvement of the present invention, the sampling knife includes a knife head and a sliding rod, the knife head is fixedly connected to the sliding rod, the sliding rod is slidably installed inside the cold air channel 2, a sampling hole is provided on the side of the sample collection groove facing the cold air channel 2, and a through hole matching the sampling hole is provided on one side of the sliding rod. When the sliding rod pushes the knife head to slide outward, the through hole on the sliding rod is connected to the sampling hole, and the bottom of the disinfection cotton exceeds the bottom of the knife head.

[0011] As a further improvement of the present invention, the top end of the cutter head extends into the interior of the slide rod and is connected and fixed to the through hole, the interior of the cutter head is configured to be hollow, and the bottom end of the cutter head is configured to be an inclined surface.

[0012] As a further improvement of the present invention, one side of the slide rod is connected to a guide rod, and the guide rod passes through the second cold air channel and extends to the outer wall of the sampling head, and is connected to a locking block, and the outer wall of the sampling head is provided with a slide groove for the sliding of the locking block, and a slide rail is symmetrically arranged in the slide groove, and the inner walls on both sides of the slide groove are provided with a limit tooth, and the limit tooth is located between the slide rail and the slide groove, and the locking block is slidably installed on the slide rail, and the locking block is symmetrically provided with a limit block matching the limit tooth, and the top of the locking block is provided with a sliding block, and the sliding block is slidably installed on the top of the locking block, and the sliding block is provided with a stopper for locking the limit block, and the sliding block is symmetrically provided with a sliding plate, and the locking block is provided with a sliding groove for the sliding plate to slide, and the bottom of the sliding plate is provided with a plug-in block, and the top inner wall of the sliding groove is provided with a plug-in groove matching the plug-in block.

[0013] As a further improvement of the present invention, a partition plate is provided in the cold air channel two, and the partition plate divides the cold air channel two into cavity one and cavity two. The cavity one is connected with the bottom of the cold air channel one, and the top and bottom of the cavity two are both sealed, so that the cavity two is not connected with the cold air channel one and cavity one. The bottom of the cavity two is provided with a hollow groove for the extension and retraction of the blade head, and the sliding rod is slidably installed inside the cavity two.

[0014] As a further improvement of the present invention, the disinfectant liquid tank includes a circular through groove and an arc-shaped through groove, the circular through groove is arranged near the top of the sampler body, the top of the arc-shaped through groove is connected with the bottom of the circular through groove, the shape of the arc-shaped through groove matches the liquid channel on the sampling head, the bottom surface of the arc-shaped through groove is flush with the top surface of the groove, and after the sampling head is connected and fixed to the sampler body through a connecting structure, the liquid channel and the cavity thereon correspond to the arc-shaped through groove and the cold air channel respectively.

[0015] As a further improvement of the present invention, the outer cover of the sampling head is provided with a dust cover, and the top of the dust cover is provided with a sealing cover. Before connecting with the sampler body, the sampling head is taken out from the dust cover.

[0016] As a further improvement of the present invention, the connection structure includes a positioning column symmetrically arranged on the outer wall of the top of the sampling head, a guide groove matching the symmetrical positioning column is provided in the groove, a positioning groove is provided on the opposite side of the symmetrical guide groove, and the positioning column is screwed into the positioning groove for locking and fixing.

[0017] As a further improvement of the present invention, a clamping block is further provided in the positioning groove, one end of the clamping block extends into the guide groove, the clamping block is connected to a clamping spring, the two ends of the clamping spring are respectively clamped and fixed to the clamping block and the top of the positioning groove, and the positioning column is clamped and fixed by the clamping block.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention combines the sterilizing cotton with the sampling knife. When the sampling knife is pushed out of the bottom of the sampling head, the sterilizing cotton is pushed out from the liquid channel. When the sampling knife is moving for skin sampling, the sampled skin can be disinfected by the sterilizing cotton, thereby achieving simultaneous sampling and disinfection processes and reducing the risk of infection in the sampling area.

[0019] 2. The present invention is provided with a connection structure, which positions and guides the positioning posts symmetrically arranged on the sampling head and the guide grooves in the grooves on the sampler body, and then rotates the sampling head to make the positioning posts screwed into the positioning grooves. Before rotating the sampling head, the tightening block is first squeezed to compress the tightening spring. When the positioning post is rotated to tighten with the end of the positioning groove, the tightening spring of the sampling head is released to tighten and fix the positioning post. The quick-release connection structure is designed to simplify the loading and unloading process of the sampling head and improve work efficiency.

[0020] 3. The present invention connects an aspirator to one side of the sample collection slot of the sampling head, which helps to automatically and completely suck the scraped skin sample into the sample collection slot through the inside of the blade head, thereby improving the sampling efficiency.

[0021] 4. The present invention is designed with a cold compress mechanism, through which cold air can be blown to the sampling site when skin sampling is performed, effectively reducing the pain during the sampling process, improving the comfort of the child, and alleviating the child's pain.

[0022] 5. The present invention stores the sampling head in a dust cover before use, which can protect the sampling knife from contamination. At the same time, by retractably installing the sampling knife inside the sampling head, the sampling knife can be completely wrapped in the sampling head when not in use, thereby preventing accidental scratches on medical staff or child patients and protecting the sampling knife from contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the connection structure between the sampling head and the sampler body after the protective cover is removed according to the present invention; Figure 2 This is a diagram showing the separation of the sampling head and the sampler body of the present invention; Figure 3 The cross-sectional view of the sampler body of the present invention is Figure 1 ; Figure 4 The cross-sectional view of the sampler body of the present invention is Figure 2 ; Figure 5 It is a schematic diagram of the internal three-dimensional structure of the sampling head of the present invention; Figure 6 It is a schematic diagram of the structure in which the locking block is separated from the slider and the stopper on the slider is tightly pressed against the limit block after being separated from the slider; Figure 7 This is a diagram showing the separation of the sampling head and the sampling knife of the present invention.

[0024] In the figure: 1, sampler body; 11, cold air channel 1; 12, circular through groove; 13, arc through groove; 14, cold air pipe; 15, air conditioner; 16, groove; 2. Sampling head; 21. Cold air channel 2; 211. Cavity 1; 212. Cavity 2; 22. Liquid channel; 23. Disinfection cotton; 24. Slide; 25. Limiting teeth; 26. Partition plate; 27. Sample collection slot; 28. Fixed rod; 29. ​​Suction hole; 210. Slide rail; 3. Sampling knife; 31. Knife head; 32. Sliding rod; 33. Through hole; 34. Guide rod; 35. Locking block; 351. Sliding block; 352. Sliding plate; 353. Connecting block; 354. Stopper; 36. Limiting block; 4. Dust cover; 5. Capping; 6. Connecting structure; 61. Positioning column; 62. Guide groove; 63. Positioning groove; 64. Tightening block. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Embodiment 1: See also Figure 1-7The present invention provides a sampling device for pediatric dermatology, comprising a sampler body 1, a sampling head 2, and a sampling knife 3. The bottom end of the sampler body 1 is provided with a groove 16 for connecting with the sampling head 2. The sampling head 2 is detachably connected with the groove 16 through a connecting structure 6. The sampling knife 3 is telescopically installed inside the sampling head 2. A sample collection groove 27 is provided on one side of the sampling head 2. The sample collection groove 27 is connected to the sampling knife 3. A suction hole 2 is provided on the outer wall of the sampling head 2 near the sample collection groove 27. 9, the suction hole 29 is used to connect the suction device, the sampler body 1 is connected with a cold compress mechanism, and the cold compress mechanism is also connected with the sampling head 2, the sampler body 1 is provided with a disinfectant liquid tank, the sampling head 2 is provided with a liquid channel 22 connected with the disinfectant liquid tank, the liquid channel 22 is provided with disinfectant cotton 23, one side of the disinfectant cotton 23 is connected with a fixing rod 28, the fixing rod 28 passes through the liquid channel 22 and is connected with the sampling knife 3, and the inner wall of the liquid channel 22 is provided with a guide groove for the fixing rod 28 to slide.

[0029] The outer cover of the sampling head 2 is provided with a dust cover 4 , and the top of the dust cover 4 is provided with a sealing cover 5 . Before connecting with the sampler body 1 , the sampling head 2 is taken out from the dust cover 4 .

[0030] In this embodiment, when in use, first open the top cover 5 of the dust cover 4, take out the sampling head 2 from the dust cover 4, then connect and fix the sampling head 2 to the sampler body 1 through the connecting structure 6, then connect the aspirator and the cold compress mechanism to the sampling head 2 and the sampler body 1 respectively, and before sampling, inject disinfectant liquid into the disinfectant liquid tank of the sampler body 1 through the infusion tube, and transport it to the liquid channel 22 of the sampling head 2, and the disinfectant cotton 23 inside it completely absorbs the injected disinfectant liquid, and then follows the sampling knife 3 to push out the bottom of the sampling head 2, and after the disinfectant liquid is injected into the disinfectant liquid tank, the disinfectant liquid is sucked out of the sampler body 1. During the process of using the disinfectant cotton 23, the sampling area can be disinfected first, and then the sampling knife 3 can be used for sampling. When the sampling knife 3 moves, the disinfectant cotton 23 disinfects the sampled area to avoid infection in the sampling area. At the same time, the sampling area can be cooled by the cold compress mechanism during the sampling process to reduce the patient's pain, thereby improving the comfort of sampling. Furthermore, when the sampling knife 3 is taking samples, the sample can be sucked into the sample collection slot 27 for collection through the suction device connected to the outer wall of the sampling head 2 to avoid splashing of samples and polluting the environment, while also improving the sampling efficiency.

[0031] Embodiment 2: On the basis of the first embodiment, in this embodiment, Figure 1-4As shown, the cold compress mechanism includes an air cooler 15, a cold air channel 11, and a cold air channel 21. The cold air channel 11 is arranged at the inner center of the sampler body 1. A cold air pipe 14 is provided on the top of the cold air channel 11. The cold air pipe 14 is connected to the air cooler 15. The cold air channel 21 is arranged at the inner center of the sampling head 2. The cold air channel 21 and the cold air channel 11 are connected to each other.

[0032] When in use, the cold air is first transported to the cold air channel 11 and the cold air channel 2 21 through the cold air machine 15 through the cold air pipe 14. Since the sampling knife 3 is arranged in the cold air channel 21, the cold air can be closer to the sampling position of the sampling knife 3 when outputting the sampling head 2, thereby improving the cold compress effect, effectively reducing the pain during the sampling process, improving the comfort of the child, and reducing the child's pain.

[0033] Embodiment three: On the basis of the first embodiment, in this embodiment, Figure 2 , Figure 5 , Figure 6 , Figure 7 As shown, the sampling knife 3 includes a knife head 31 and a slide rod 32, the knife head 31 is fixedly connected to the slide rod 32, the slide rod 32 is slidably installed inside the cold air channel 21, and an injection hole is provided on the side of the sample collecting groove 27 facing the cold air channel 2, and a through hole 33 matching the injection hole is provided on one side of the slide rod 32. When the slide rod 32 pushes the knife head 31 to slide outward, the through hole 33 on the slide rod 32 is connected to the injection hole, and the bottom of the disinfection cotton 23 exceeds the bottom of the knife head 31.

[0034] The top end of the cutter head 31 extends into the interior of the slide rod 32 and is connected and fixed to the through hole 33 . The interior of the cutter head 31 is hollow, and the bottom end of the cutter head 31 is an inclined surface.

[0035] When in use, when the blade head 31 on the slide bar 32 is completely retracted in the cold air passage groove 2, the through hole 33 on the slide bar 32 is not connected to the sampling hole of the sample collecting groove 27. When the slide bar 32 drives the blade head 31 to extend out of the bottom of the sampling head 2, the through hole 33 on the slide bar 32 is connected to the sampling hole of the sample collecting groove 27. When the slide bar 32 drives the blade head 31 to be pushed out to the bottom of the sampling head 2, the disinfection cotton 23 connected to the slide bar 32 is pushed out to the bottom of the sampling head 2 at the same time. Since the bottom of the disinfection cotton 23 exceeds the bottom of the blade head 31, through this design, the disinfection cotton 23 can be slightly bent after contacting the patient's skin, so that the disinfection cotton 23 can be completely fitted with the patient's skin, and the state of manual flat smearing with a cotton swab can be simulated, so that the disinfection liquid in the disinfection cotton 23 can be maximized and the disinfection effect is improved. In this embodiment, the blade head 31 is set to be hollow and the top end is connected to the through hole 33, which can better transport the sample to the sample collecting groove 27, improve the collection efficiency, and avoid the sample from being scattered in other places and polluting the environment.

[0036] Embodiment 4: On the basis of the first embodiment, in this embodiment, Figure 5-7As shown, a guide rod 34 is connected to one side of the slide rod 32, and the guide rod 34 passes through the cold air channel 21 and extends to the outer wall of the sampling head 2, and is connected to a locking block 35. The outer wall of the sampling head 2 is provided with a slide groove 24 for the locking block 35 to slide, and the slide groove 24 is symmetrically provided with a slide rail 210. The inner walls on both sides of the slide groove 24 are provided with limiting teeth 25, and the limiting teeth 25 are located between the slide rail 210 and the slide groove 24. The locking block 35 is slidably installed on the slide rail 210. The locking block The locking block 35 is symmetrically provided with a limit block 36 matching the limit tooth 25, the top of the locking block 35 is provided with a slider 351, the slider 351 is slidably installed on the top of the locking block 35, the slider 351 is provided with a stopper 354 for locking the limit block 36, the slider 351 is symmetrically provided with a slide plate 352, the locking block 35 is provided with a sliding groove for the slide plate 352 to slide, the bottom of the slide plate 352 is provided with a plug-in block 353, the top inner wall of the sliding groove is provided with a plug-in block 354 for plugging with the plug-in block 352, and the top inner wall of the sliding groove is provided with a plug-in block 353. 53, in order to prevent the knife head 31 from scratching the medical staff when the sampling knife 3 is not in use, a locking block 35 for controlling the sliding of the slide bar 32 is provided. The initial state of the sampling knife 3 is that the whole is retracted inside the sampling head 2. When the sampling knife 3 is needed, the slider 351 at the top of the locking block 35 is pushed toward the top surface of the locking block 35. At this time, the stopper 354 on the slider 351 releases the restriction on the limit block 36, and then the locking block 35 is pushed downward. Since the limit block 36 itself has a certain elasticity, when the lock is pushed downward, When the locking block 35 is tightened, the limit block 36 slides along the limit teeth 25 on both sides of the slide groove 24. When the locking block 35 is not pushed, the limit block 36 and the tooth groove of the limit tooth 25 are limited and fixed. In order to improve the locking effect of the locking block 35, the slider 351 is pushed upward so that the stop block 354 on the slider 351 abuts against the limit block 36. At this time, the plug-in block 353 at the bottom of the slide rod 32 is plugged and fixed with the plug-in groove of the sliding groove on the locking block 35, thereby preventing the limit block 36 from being separated from the tooth groove of the limit tooth 25, thereby locking the locking block 35.

[0037] A partition plate 26 is provided in the cold air channel 21, and the partition plate 26 divides the cold air channel 21 into a cavity 1 211 and a cavity 2 212. The cavity 1 211 is connected to the bottom of the cold air channel 1 11, and the top and bottom of the cavity 2 212 are both sealed, so that the cavity 2 212 is not connected to the cold air channel 1 11 and the cavity 1 211. The bottom of the cavity 212 is provided with a hollow groove for the extension and retraction of the cutter head 31, and the slide bar 32 is slidably installed inside the cavity 212. In order to improve the accuracy of the mutual connection between the through hole 33 on the slide bar 32 and the injection hole on the sample collection slot 27, a hollow groove is provided at the bottom of the cavity 212 for only the cutter head 31 to pass through. When the bottom of the slide bar 32 is pressed against the bottom inner wall of the cavity 2 212, the through hole 33 thereon is completely aligned with the injection hole.

[0038] In this embodiment, the sampling knife 3 is telescopically installed inside the sampling head 2, and the sampling knife 3 is completely wrapped in the sampling head 2 when not in use, so as to prevent accidental scratches on medical staff or child patients, and protect the sampling knife 3 from contamination. Furthermore, by dividing the cold air channel 21 into cavity 1 211 and cavity 2 212, the cold air delivery and telescopic separation operations of the sampling knife 3 can be realized, which not only improves the sliding stability of the slide bar 32 of the sampling knife 3, but also improves the more precise alignment of the through hole 33 on the slide bar 32 and the sampling hole of the sample collection slot 27. The cold air delivery will not be blocked by the sampling knife 3, thereby improving the use effect.

[0039] Embodiment five: On the basis of the first embodiment, in this embodiment, Figure 2-4 As shown, the disinfectant liquid tank includes a circular groove 12 and an arcuate groove 13, the circular groove 12 is arranged near the top of the sampler body 1, the top of the arcuate groove 13 is connected with the bottom of the circular groove 12, the shape of the arcuate groove 13 matches the liquid channel 22 on the sampling head 2, the bottom surface of the arcuate groove 13 is flush with the top surface of the groove 16, after the sampling head 2 is connected and fixed to the sampler body 1 through the connecting structure 6, the liquid channel 22 and the cavity 211 thereon correspond to the arcuate groove 13 and the cold air channel 11 respectively, the circular groove 12 is arranged to facilitate connection with the infusion tube, and the arcuate groove 13 is arranged at the bottom of the circular groove 12 to facilitate matching with the liquid channel 22 on the sampling head 2.

[0040] The connecting structure 6 includes a positioning column 61 symmetrically arranged on the outer wall of the top of the sampling head 2, a guide groove 62 matching the symmetrical positioning column 61 is provided in the groove 16, and a positioning groove 63 is provided on the opposite side of the symmetrical guide groove 62, and the positioning column 61 is screwed into the positioning groove 63 for locking and fixing.

[0041] A clamping block 64 is also provided in the positioning groove 63, one end of the clamping block 64 extends into the guide groove 62, the clamping block 64 is connected to a clamping spring, both ends of the clamping spring are respectively clamped and fixed to the clamping block 64 and the top of the positioning groove 63, and the positioning column 61 is clamped and fixed by the clamping block 64.

[0042] When in use, align the positioning column 61 on the sampling head 2 with the guide groove 62 on the sampler body 1, insert it into the sampler body 1, and then rotate the sampling head 2 so that the positioning column 61 is screwed into the positioning groove 63 for locking and fixing. In order to increase the locking force of the positioning column 61, the tightening block 64 is squeezed before rotating the sampling head 2 to compress the tightening spring. When the positioning column 61 is rotated to tighten with the end of the positioning groove 63, the tightening spring of the sampling head 2 is released to tighten and fix the positioning column 61. The connection structure 6 designed in this way simplifies the loading and unloading process of the sampling head 2 and improves work efficiency. When the positioning column 61 is rotated and locked, the liquid channel 22 and cavity 211 on the sampling head 2 correspond to the arc-shaped through groove 13 and the cold air channel 11 on the sampler body 1 respectively.

[0043] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A sampling device for pediatric dermatology, characterized in that: The sampler comprises a sampler body (1), a sampler head (2), and a sampler knife (3); the bottom end of the sampler body (1) is provided with a groove (16) for connecting with the sampler head (2); the sampler head (2) is detachably connected with the groove (16) via a connecting structure (6); the sampler knife (3) is telescopically mounted inside the sampler head (2); a sample collection groove (27) is provided on one side of the sampler head (2); the sample collection groove (27) is communicated with the sampler knife (3); a suction hole (29) is provided on the outer wall of the sampler head (2) on a side close to the sample collection groove (27); the suction hole (29) is (29) is used to connect the aspirator, the sampler body (1) is connected to a cold compress mechanism, the cold compress mechanism is also connected to the sampling head (2), the sampler body (1) is provided with a disinfectant liquid tank, the sampling head (2) is provided with a liquid channel (22) connected to the disinfectant liquid tank, the liquid channel (22) is provided with a disinfectant cotton (23), one side of the disinfectant cotton (23) is connected to a fixing rod (28), the fixing rod (28) passes through the liquid channel (22) and is connected to the sampling knife (3), and the inner wall of the liquid channel (22) is provided with a guide groove for the fixing rod (28) to slide.

2. A sampling device for children's dermatology according to claim 1, characterized in that: The cold compress mechanism comprises an air cooler (15), a cold air channel 1 (11), and a cold air channel 2 (21); the cold air channel 1 (11) is arranged at the inner center of the sampler body (1); a cold air pipe (14) is arranged at the top of the cold air channel 1 (11); the cold air pipe (14) is connected to the air cooler (15); the cold air channel 2 (21) is arranged at the inner center of the sampling head (2); the cold air channel 2 (21) and the cold air channel 1 (11) are connected to each other.

3. A sampling device for children's dermatology according to claim 2, characterized in that: The sampling knife (3) comprises a knife head (31) and a slide rod (32), wherein the knife head (31) is fixedly connected to the slide rod (32), and the slide rod (32) is slidably installed inside the second cold air passage (21). A sampling hole is provided on the side of the sample collecting groove (27) facing the second cold air passage, and a through hole (33) matching the sampling hole is provided on one side of the slide rod (32). When the slide rod (32) pushes the knife head (31) to slide outward, the through hole (33) on the slide rod (32) is connected to the sampling hole, and the bottom of the disinfection cotton (23) exceeds the bottom of the knife head (31).

4. A sampling device for children's dermatology according to claim 3, characterized in that: The top end of the cutter head (31) extends into the interior of the slide rod (32) and is connected and fixed to the through hole (33); the interior of the cutter head (31) is hollow, and the bottom end of the cutter head (31) is an inclined surface.

5. A sampling device for children's dermatology according to claim 3, characterized in that: A guide rod (34) is connected to one side of the slide rod (32). The guide rod (34) passes through the second cold air channel (21) and extends to the outer wall of the sampling head (2) and is connected to a locking block (35). The outer wall of the sampling head (2) is provided with a slide groove (24) for the locking block (35) to slide. The slide groove (24) is symmetrically provided with a slide rail (210). The inner walls of both sides of the slide groove (24) are provided with limiting teeth (25). The limiting teeth (25) are located between the slide rail (210) and the slide groove (24). The locking block (35) is slidably mounted on the slide rail (210). The locking block (35) is A limit block (36) matching the limit tooth (25) is symmetrically arranged, a slider (351) is arranged at the top of the locking block (35), the slider (351) is slidably mounted on the top of the locking block (35), a stopper (354) for locking the limit block (36) is arranged on the slider (351), a slide plate (352) is symmetrically arranged on the slider (351), a sliding groove for sliding the slide plate (352) is arranged on the locking block (35), a plug-in block (353) is arranged at the bottom of the slide plate (352), and a plug-in groove matching the plug-in block (353) is arranged on the top inner wall of the sliding groove.

6. A sampling device for children's dermatology according to claim 3, characterized in that: A partition plate (26) is provided in the cold air channel 2 (21), and the partition plate (26) divides the cold air channel 2 (21) into cavity 1 (211) and cavity 2 (212). The cavity 1 (211) is connected to the bottom of the cold air channel 1 (11), and the top and bottom of the cavity 2 (212) are both sealed, so that the cavity 2 (212) is not connected to the cold air channel 1 (11) and cavity 1 (211). The bottom of the cavity 2 (212) is provided with a hollow groove for the blade head (31) to be telescopic, and the slide rod (32) is slidably installed inside the cavity 2 (212).

7. A sampling device for children's dermatology according to claim 6, characterized in that: The disinfectant liquid tank comprises a circular groove (12) and an arcuate groove (13); the circular groove (12) is arranged near the top of the sampler body (1); the top of the arcuate groove (13) is connected to the bottom of the circular groove (12); the shape of the arcuate groove (13) matches the liquid groove on the sampling head (2); the bottom surface of the arcuate groove (13) is flush with the top surface of the groove (16); after the sampling head (2) is connected and fixed to the sampler body (1) through the connecting structure (6), the liquid channel (22) and the cavity 1 (211) thereon correspond to the arcuate groove (13) and the cold air channel 1 (11), respectively.

8. A sampling device for children's dermatology according to claim 7, characterized in that: The outer cover of the sampling head (2) is provided with a dust cover (4), and the top of the dust cover (4) is provided with a sealing cover (5). Before connecting with the sampler body (1), the sampling head (2) is taken out of the dust cover (4).

9. The sampling device for children's dermatology according to claim 1, characterized in that: The connection structure (6) comprises a positioning column (61) symmetrically arranged on the outer wall of the top of the sampling head (2); a guide groove (62) matching the symmetrical positioning column (61) is arranged in the groove (16); a positioning groove (63) is arranged on the opposite side of the symmetrical guide groove (62); the positioning column (61) is screwed into the positioning groove (63) for locking and fixing.

10. A sampling device for children's dermatology according to claim 9, characterized in that: A clamping block (64) is also provided in the positioning groove (63), one end of the clamping block (64) extends into the guide groove (62), the clamping block (64) is connected to a clamping spring, two ends of the clamping spring are respectively clamped and fixed to the clamping block (64) and the top of the positioning groove (63), and the positioning column (61) is clamped and fixed via the clamping block (64).

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