A dermatological sampler
By designing a dermatological sampler with a self-locking structure, the problems of poor sealing and cumbersome operation of existing skin sampling devices have been solved, realizing closed storage of samples and efficient sampling, and improving the accuracy and convenience of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 江苏嘉文医疗用品有限公司
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
Existing skin sampling devices are difficult to isolate the sampling chamber from the external environment when not in use, making the samples susceptible to contamination. Furthermore, the sampling process is cumbersome, affecting the accuracy of test results and ease of operation.
A dermatological sampler was designed, which uses a self-locking structure for the first and second sampling rods to cooperate with the orifice, automatically opening and closing the sampling orifice to ensure sealing when not in use. During the sampling process, the first and second sampling rods are used to rub and collect samples on the skin, and the sample is automatically sealed in the sampling cavity after sampling. A spherical structure is used to support the sampling rods to prevent bending.
This method enables closed storage of samples after sampling, avoiding sample contamination, improving the accuracy of detection and the convenience of operation, and simplifying the sampling process.
Smart Images
Figure HDA0005547091210000011 
Figure HDA0005547091210000021 
Figure HDA0005547091210000031
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical technology, and in particular to a dermatological sampler. Background Technology
[0002] In the field of medical testing, skin sampling is an important method for diagnosing skin diseases and sources of infection. Various skin surface sampling devices exist, typically using methods such as scraping, adsorption, or friction to obtain samples from the affected area. However, these devices often suffer from cumbersome operation procedures and poor sealing. For example, some devices require manual opening or closing of the sampling channel, increasing operational difficulty and the risk of contamination; others struggle to effectively seal the sample after sampling.
[0003] Existing skin samplers are difficult to isolate the sampling chamber from the external environment when not in use, allowing bacteria to invade or the analyte to leak out. They are also difficult to effectively seal the sample after sampling, making it susceptible to external environmental contamination or cross-contamination during storage or transportation, thus affecting the accuracy of test results. Secondly, when traditional samplers use multiple friction sampling (such as for chickenpox, molluscum contagiosum, etc.), the sampling part may bend and deform, affecting the sampling effect. It is also inconvenient to collect the sample in a closed environment. Summary of the Invention
[0004] To address the aforementioned problems, this invention provides a dermatological sampler, comprising a sampling base, a pushing portion at the bottom of the sampling base, a closing portion at the top of the sampling base, a first sampling rod on the closing portion, a sampling cover covering the top of the sampling base, a first sampling hole on the sampling cover, the top of the first sampling rod passing upward through the first sampling hole, a sampling cavity inside the sampling base, a second sampling rod connected to the bottom of the sampling cavity, a second sampling hole on the sampling cover, the top of the second sampling rod passing upward through the second sampling hole, a third sampling hole on the closing portion, a first self-locking structure between the first sampling hole and the first sampling rod, and a second self-locking structure between the second sampling rod and the second sampling hole. When the first sampling rod and the second sampling rod extend or retract, the first and second sampling holes are automatically opened and closed by the first and second self-locking structures, respectively. When the first sampling rod retracts, its outer circular surface contacts the first sampling hole and moves linearly along the wall of the first sampling hole.
[0005] As a further preferred embodiment, the first self-locking structure includes a first tapered surface disposed on the outer circular surface of the first sampling rod. The first tapered surface gradually tapers inward from the outer end of the first sampling rod. When the first sampling rod moves outward along the first sampling hole, the gap between the first tapered surface and the first sampling hole increases; conversely, when the first sampling rod moves inward along the first sampling hole, the gap between the first tapered surface and the first sampling hole decreases. Similarly, the second self-locking structure includes a second tapered surface disposed on the outer circular surface of the second sampling rod. The second tapered surface gradually tapers inward from the outer end of the second sampling rod. When the second sampling rod moves outward along the second sampling hole, the gap between the second tapered surface and the second sampling hole increases; conversely, when the second sampling rod moves inward along the second sampling hole, the gap between the second tapered surface and the second sampling hole decreases.
[0006] As a further preferred embodiment, the third sampling hole is located on the bottom side of the second sampling hole and is on the same axis as the second sampling hole, and the second sampling rod passes through the third sampling hole and the second sampling hole in sequence to reach the top of the sampling cover.
[0007] As a further preferred embodiment, the top of the sampling cover is provided with a first spherical concave cavity that is recessed downwards, and the first sampling hole and the second sampling hole are formed on the first spherical concave cavity.
[0008] As a further preferred embodiment, there are several first sampling holes and one second sampling hole. The second sampling hole is located at the center of the first spherical concave cavity, and several first sampling holes are arranged in a ring around the second sampling hole.
[0009] As a further preferred embodiment, the closed portion at the top of the sampling seat is provided with a downwardly recessed second spherical concave cavity, the third sampling hole is opened at the center of the second spherical concave cavity, the bottom of the sampling cavity is provided with a downwardly recessed third spherical concave cavity, and a sample outlet tube is connected from the bottom of the third spherical concave cavity to the outside of the sampling seat.
[0010] As a further preferred embodiment, the bottom periphery of the sampling seat is provided with a pushing part, the bottom periphery of the sampling cover is provided with a limiting part, a locking nut is connected to the outer circular surface of the sampling cover by an external thread, a spring is provided between the top surface of the pushing part and the limiting part, the bottom end of the spring is screwed to the pushing part, and the top end of the spring is locked to the top surface of the limiting part by the locking nut.
[0011] As a further preferred embodiment, the outer circular surface of the sampling cover is provided with a hook portion, which extends in the direction of the pushing portion and then bends horizontally away from the radial direction of the sampling cover.
[0012] The advantages of this invention compared to the prior art are:
[0013] The sampling is enclosed in the sampling chamber and ultimately collected in the sampling chamber through the third sampling port. This closed storage method prevents infection of the sample layer during testing and improves accuracy. The outer end of the second sampling rod is spherical. During sampling, the outer end of the second sampling rod supports the skin as a support point for the first sampling rod, preventing the first sampling rod from bending. Pushing the sampling seat during sampling extends both the first and second sampling rods and opens both the first and second sampling ports, improving convenience. The sampling action relies on the first sampling rod rubbing back and forth on the skin, reducing discomfort in the affected area. The structure is simple, ensuring reasonable collection of samples in a closed environment, and the operation is easy. Attached Figure Description
[0014] Figure 1 A schematic diagram of the external structure of a dermatology sampler provided for an embodiment of the present invention;
[0015] Figure 2 A top view schematic diagram of a dermatological sampler provided for an embodiment of the present invention;
[0016] Figure 3 A dermatological sampler provided for embodiments of the present invention comprises... Figure 2 A schematic diagram of section A after it has been cut open;
[0017] Figure 4 A dermatological sampler provided for embodiments of the present invention comprises... Figure 1 This is a schematic diagram from another perspective.
[0018] Figure 5 A schematic diagram of a dermatology sampler after being cut open when the sampling cover is removed, provided for an embodiment of the present invention;
[0019] Figure 6 This is a schematic diagram of the sampling cover in a dermatology sampler after being cut open, as provided in an embodiment of the present invention.
[0020] In the diagram: 1. Sampling seat; 2. Pushing part; 3. Closing part; 4. First sampling rod; 5. Sampling cover; 6. First sampling hole; 7. Sampling chamber; 8. Second sampling rod; 9. Second sampling hole; 10. Third sampling hole; 11. First tapered surface; 12. Second tapered surface; 13. First spherical concave cavity; 14. Second spherical concave cavity; 15. Third spherical concave cavity; 16. Sampling tube; 17. Limiting part; 18. Locking nut; 19. Spring; 20. Hook part. Detailed Implementation
[0021] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0022] In one implementation, such as Figures 1-6 As shown:
[0023] This embodiment provides a dermatological sampler, including a sampling base 1. The bottom of the sampling base 1 has a pushing part 2, and the top of the sampling base 1 has a closing part 3. A first sampling rod 4 is mounted on the closing part 3. A sampling cover 5 is fitted over the top of the sampling base 1, and a first sampling hole 6 is opened on the sampling cover 5. The top of the first sampling rod 4 passes upward through the first sampling hole 6. A sampling cavity 7 is provided inside the sampling base 1, and a second sampling rod 8 is connected to the bottom of the sampling cavity 7. A second sampling hole 9 is opened on the sampling cover 5, and the top of the second sampling rod 8... The sampling rod 6 passes through the second sampling hole 9 at the top and the closing part 3 is provided with a third sampling hole 10. A first self-locking structure is provided between the first sampling hole 6 and the first sampling rod 4, and a second self-locking structure is provided between the second sampling rod 8 and the second sampling hole 9. When the first sampling rod 4 and the second sampling rod 8 extend or retract, the first sampling hole 6 and the second sampling hole 9 are automatically opened and closed by the first self-locking structure and the second self-locking structure, respectively. When the first sampling rod 4 retracts, its outer circular surface contacts the first sampling hole 6 and moves linearly along the hole wall of the first sampling hole 6.
[0024] The first self-locking structure includes a first tapered surface 11 disposed on the outer circular surface of the first sampling rod 4. The first tapered surface 11 gradually tapers inward from the outer end of the first sampling rod 4. When the first sampling rod 4 moves outward along the first sampling hole 6, the gap between the first tapered surface 11 and the first sampling hole 6 increases; conversely, when the first sampling rod 4 moves inward along the first sampling hole 6, the gap between the first tapered surface 11 and the first sampling hole 6 decreases. Similarly, the second self-locking structure includes a second tapered surface 12 disposed on the outer circular surface of the second sampling rod 8. The second tapered surface 12 gradually tapers inward from the outer end of the second sampling rod 8. When the second sampling rod 8 moves outward along the second sampling hole 9, the gap between the second tapered surface 12 and the second sampling hole 9 increases; conversely, when the second sampling rod 8 moves inward along the second sampling hole 9, the gap between the second tapered surface 12 and the second sampling hole 9 decreases.
[0025] Under normal conditions, only a small section of the tip of the first sampling rod 4 protrudes from the top of the sampling hood 5. At this time, the first tapered surface 11 of the first sampling rod 4 retracts to contact the wall of the first sampling hole 6, thus sealing the first sampling hole 6. Similarly, under normal conditions, only a small section of the tip of the second sampling rod 8 protrudes from the top of the sampling hood 5. At this time, the second tapered surface 12 of the second sampling rod 8 retracts to contact the wall of the second sampling hole 9, thus sealing the second sampling hole 9. That is, under normal conditions, the sampling hood 5 is closed, creating a relative seal between the interior of the sampling hood 5 and the sampling chamber 7. When not in use (under normal conditions), this sampling device prevents bacterial infection and meets medical requirements.
[0026] In use, align the outer end of the sampling cover 5 with the skin sampling area, push the bottom end of the sampling seat 1 to move the sampling seat 1 forward, and the sampling seat 1 will push the first sampling rod 4 to extend outward along the first sampling hole 6, and the sampling seat 1 will push the second sampling rod 8 to extend outward along the second sampling hole 9. At this time, a gap gradually forms between the first tapered surface 11 of the first sampling rod 4 and the hole wall of the first sampling hole 6, and a gap gradually forms between the second tapered surface 12 of the second sampling rod 8 and the hole wall of the second sampling hole 9. That is, at this time, the first sampling hole 6 and the second sampling hole 9 are connected. With hole 9 open, the outer ends of the first sampling rod 4 and the second sampling rod 8 contact the skin. Hold the sampler and rub the outer ends of the first sampling rod 4 and the second sampling rod 8 back and forth along the skin, causing the skin layer of the affected area to fall directly onto the closed part 3 or onto the first sampling rod 4 and the second sampling rod 8, and then fall onto the sampling cover 5. It then falls into the sampling chamber 7 through the gap between the first sampling hole 6 and the first sampling rod 4, and through the gap between the second sampling rod 8 and the second sampling hole 9, thus completing the sampling. After sampling, the sampling seat 1 is retracted in the reverse direction. The sampling seat 1 then drags the first sampling rod 4 and the second sampling rod 8 in the reverse direction, causing the first sampling rod 4 to retract along the first sampling hole 6 and the second sampling rod 8 to retract along the first sampling hole 6. The first taper surface 11 of the first sampling rod 4 retracts to contact the wall of the first sampling hole 6, thus sealing the first sampling hole 6. The second taper surface 12 of the second sampling rod 8 retracts to contact the wall of the second sampling hole 9, thus sealing the second sampling hole 9. This seals the sample in the sampling chamber 7 and ultimately collects it in the sampling chamber 7 through the third sampling hole 10. This sealed storage method prevents infection of the sample's underlying layer (close to muscle) during testing on the detection device, thus improving the accuracy of the test.
[0027] In addition, the outer end of the second sampling rod 8 is spherical. During sampling, the outer end of the second sampling rod 8 is supported on the skin as a support point for the first sampling rod 4 during sampling, preventing the first sampling rod 4 from bending. During sampling, pushing the sampling seat 1 can complete the extension action of the first sampling rod 4 and the second sampling rod 8, and at the same time complete the opening action of the first sampling hole 6 and the second sampling hole 9 (forming a gap between the rod and the hole), which improves convenience. The sampling action relies on the first sampling rod 4 contacting and rubbing back and forth on the skin, reducing discomfort in the affected area. The structure is simple, and the operation is easy to operate so that the sample can be reasonably collected in a closed environment.
[0028] The third sampling hole 10 is located on the bottom side of the second sampling hole 9 and is on the same axis as the second sampling hole 9. The second sampling rod 8 passes through the third sampling hole 10 and the second sampling hole 9 in sequence to reach the top of the sampling cover 5. The diameter of the second sampling rod 8 is smaller than that of the third sampling hole 10. There is always a gap between the third sampling hole 10 and the second sampling rod 8 to facilitate material dropping.
[0029] The top of the sampling cover 5 is provided with a downwardly recessed first spherical concave cavity 13, and the first sampling hole 6 and the second sampling hole 9 are opened on the first spherical concave cavity 13. The first spherical concave cavity 13 directly receives skin samples, and its spherical concave cavity structure makes the samples collect in the direction of the pores, and ensures that the samples fall into the sampling cavity 7.
[0030] There are several first sampling holes 6 and one second sampling hole 9. The second sampling hole 9 is located at the center of the first spherical concave cavity 13. Several first sampling holes 6 are arranged in a ring around the second sampling hole 9. There are several first sampling holes 6 and several corresponding first sampling rods 4. Each first sampling rod 4 extends into a first sampling hole 6, increasing the contact area with the skin and improving sampling efficiency. The second sampling holes 9 and the second sampling rods 8 are located at the center of these first sampling rods 4, serving as the central support point for contact with the skin during sampling, ensuring the stability of each first sampling rod 4 when contacting the skin for sampling.
[0031] The sampling seat 1 has a downwardly recessed second spherical concave cavity 14 on the closed part 3 at the top. The third sampling hole 10 is opened in the center of the second spherical concave cavity 14. The bottom of the sampling cavity 7 has a downwardly recessed third spherical concave cavity 15. The bottom of the third spherical concave cavity 15 is connected to the outside of the sampling seat 1 via a sample outlet tube 16. The second spherical concave cavity 14 and the first spherical concave cavity 13 have the same function, which is to facilitate sampling and collection. The difference is that the second spherical concave cavity 14 is located inside the sampling cover 5. After the sample is finally collected into the sampling cavity 7 using the second spherical concave cavity 14, the sample falls into the third spherical concave cavity 15 in the inner end area of the sample outlet tube 16. When transferred to the detection equipment for detection, the sample is easily discharged through the sample outlet tube 16.
[0032] The bottom periphery of the sampling seat 1 is provided with a pushing part 2, the bottom periphery of the sampling cover 5 is provided with a limiting part 17, the outer circular surface of the sampling cover 5 is connected with a locking nut 18 by an external thread, a spring 19 is provided between the top surface of the pushing part 2 and the limiting part 17, the bottom end of the spring 19 is connected to the pushing part 2 by a screw, and the top end of the spring 19 is locked to the top surface of the limiting part 17 by the locking nut 18. During actual sampling, the finger pushes the pressing part 2, which in turn pushes the sampling seat 1 forward relative to the skin. The sampling seat 1 then pushes the first sampling rod 4 and the second sampling rod 8 forward, compressing and shortening the spring 19. Conversely, after sampling, releasing the finger causes the spring 19 to stretch, putting force on the pressing part 2 and pushing the sampling seat 1 back to its original position. The sampling seat 1 then drives the first sampling rod 4 and the second sampling rod 8 to retract in the opposite direction, automatically closing the first sampling hole 6 and the second sampling hole 9, further improving convenience. The top of the spring 19 is locked to the top surface of the limiting part 17 by the locking nut 18, forming a connection. Therefore, by loosening the locking nut 18, the top of the spring 19 can be removed from the sampling cover 5, allowing the sampling seat 1 to be separated from the sampling cover 5 for regular cleaning or sterilization of the sampling chamber 7. This arrangement of the spring 19 provides both detachable connection and repositioning capability.
[0033] The outer circumference of the sampling cover 5 is provided with a hook portion 20. The hook portion 20 extends in the direction of the pushing portion 2 and then bends horizontally away from the radial direction of the sampling cover 5. When in use, another finger hooks the hook and forms a relative force relationship with the pushing portion 2, which makes it easier for the pushing portion 2 to push the sampling seat 1 forward.
[0034] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.
[0035] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A dermatological sampler, characterized in that, The sample includes a sampling seat (1), a pushing part (2) at the bottom of the sampling seat (1), a closing part (3) at the top of the sampling seat (1), a first sampling rod (4) on the closing part (3), a sampling cover (5) on the outside of the top of the sampling seat (1), a first sampling hole (6) on the top of the sampling cover (5), the top of the first sampling rod (4) passing upward through the first sampling hole (6), a sampling cavity (7) inside the sampling seat (1), a second sampling rod (8) connected to the bottom of the sampling cavity (7), the outer end of the second sampling rod (8) being spherical, a second sampling hole (9) on the sampling cover (5), and the top of the second sampling rod (8) passing upward through the second sampling hole (9). The second sampling hole (9) and the second sampling rod (8) serve as the central support point in contact with the skin during sampling. The closing part (3) is provided with a third sampling hole (10). A first self-locking structure is provided between the first sampling hole (6) and the first sampling rod (4). A second self-locking structure is provided between the second sampling rod (8) and the second sampling hole (9). When the first sampling rod (4) and the second sampling rod (8) extend and retract, the first sampling hole (6) and the second sampling hole (9) are automatically opened and closed by the first self-locking structure and the second self-locking structure respectively. When the first sampling rod (4) retracts, its outer circular surface contacts the first sampling hole (6) and moves linearly along the hole wall of the first sampling hole (6). The first self-locking structure includes a first tapered surface (11) disposed on the outer circular surface of the first sampling rod (4). The first tapered surface (11) gradually tapers inward from the outer end of the first sampling rod (4). When the first sampling rod (4) moves outward along the first sampling hole (6), the gap between the first tapered surface (11) and the first sampling hole (6) increases; conversely, when the first sampling rod (4) moves inward along the first sampling hole (6), the gap between the first tapered surface (11) and the first sampling hole (6) decreases. The second self-locking structure includes a second tapered surface (12) disposed on the outer circular surface of the second sampling rod (8). The second tapered surface (12) gradually tapers from the outer end of the second sampling rod (8) inward. When the second sampling rod (8) moves outward along the second sampling hole (9), the gap between the second tapered surface (12) and the second sampling hole (9) increases; conversely, when the second sampling rod (8) moves inward along the second sampling hole (9), the gap between the second tapered surface (12) and the second sampling hole (9) decreases. The third sampling hole (10) is located on the bottom side of the second sampling hole (9) and is on the same axis as the second sampling hole (9). The second sampling rod (8) passes through the third sampling hole (10) and the second sampling hole (9) in sequence to reach the top of the sampling cover (5). The sampling seat (1) has a pushing part (2) at its bottom periphery, and the sampling cover (5) has a limiting part (17) at its bottom periphery. A locking nut (18) is connected to the outer circular surface of the sampling cover (5) by an external thread. A spring (19) is provided between the pushing part (2) and the top surface of the limiting part (17). The bottom end of the spring (19) is screwed to the pushing part (2), and the top end of the spring (19) is locked to the top surface of the limiting part (17) by the locking nut (18). The outer circular surface of the sampling cover (5) is provided with a hook part (20). The hook part (20) extends in the direction of the pushing part (2) and then bends horizontally away from the radial direction of the sampling cover (5).
2. The dermatological sampler according to claim 1, characterized in that, The top of the sampling cover (5) is provided with a first spherical concave cavity (13) that is recessed downwards, and the first sampling hole (6) and the second sampling hole (9) are opened on the first spherical concave cavity (13).
3. A dermatological sampler according to claim 2, characterized in that, There are several first sampling holes (6) and one second sampling hole (9). The second sampling hole (9) is located at the center of the first spherical concave cavity (13), and several first sampling holes (6) are arranged in a ring around the second sampling hole (9).
4. A dermatological sampler according to claim 2, characterized in that, The sampling seat (1) has a second spherical concave cavity (14) that is recessed downward on the closed part (3) at the top. The third sampling hole (10) is opened in the center of the second spherical concave cavity (14). The bottom of the sampling cavity (7) has a third spherical concave cavity (15) that is recessed downward. A sample outlet tube (16) is connected from the bottom of the third spherical concave cavity (15) to the outside of the sampling seat (1).