Skin sampler

Abstract

The invention relates to the technical field of medical instruments, in particular to a skin sampler which comprises a shell sleeve, an adjusting mechanism is arranged on the surface of the inner side of the shell sleeve, and an annular cutting mechanism is arranged on the surface of one side of the adjusting mechanism. According to the device, through the synergistic effect of the adjusting mechanism and the girdling mechanism, more perfect sampling of the human skin is achieved, the micro motor provides power support for the adjusting mechanism, the positions of the sampling head and the sampling cutting ring are accurately adjusted and controlled, it is ensured that the sampling cutting ring can accurately reach the target skin depth, and a foundation is laid for work of the girdling mechanism; meanwhile, the girdling mechanism efficiently completes girdling of skin samples under negative pressure and operation of related parts, the girdling mechanism and the girdling mechanism cooperate with each other, the sampling accuracy is improved, samples can be accurately obtained no matter shallow skin lesions or deep skin lesions, excessive damage to normal tissue is avoided, the operation efficiency is improved, the operation time is shortened, and the process is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a skin sampler. Background Art

[0002] In the field of modern medicine, skin samplers are a branch of in vitro diagnostic medical devices. They are mainly used in dermatological clinical diagnosis, pathological examination, and skin disease research. In skin pathology research, the role of skin samplers is indispensable. Researchers can use it to obtain skin tissue from various skin disease models or patient samples to study the pathogenesis of the disease. For example, in the process of studying autoimmune skin diseases, skin samples are obtained through skin samplers to observe the morphology of skin cells, the infiltration of immune cells, and the expression of cytokines, which helps to gain a deeper understanding of the pathological and physiological process of the disease and lay the foundation for the development of new therapeutic drugs and methods. Therefore, a skin sampler is particularly needed.

[0003] Traditional skin samplers lack an effective fitting design at the bottom, and cannot come into close contact with the skin surface during sampling, especially in areas with uneven skin surfaces. The circumcision knife is prone to deviation, resulting in irregular sampling shapes. During the puncture process, the control of the puncture depth often relies on the doctor's experience and feel. Due to the lack of a precise adjustment mechanism, it is difficult to ensure that the depth of each sampling is consistent. In the sample processing stage, after the circumcision knife obtains the skin sample, there is no special internal excision mechanism. This requires the doctor to perform additional operations to separate and remove the sample after sampling. This operation process is relatively cumbersome, which not only increases the operation time, but also easily leads to sample contamination. Summary of the invention

[0004] The purpose of the present invention is to provide a skin sampler to solve the problem that the traditional skin sampler proposed in the above-mentioned background technology lacks an effective fitting design at the bottom and cannot be in close contact with the skin surface during sampling, especially in areas where the skin surface is uneven. The circumcision knife is prone to deviation, resulting in an irregular sampling shape. At the same time, during the puncture process, the control of the puncture depth often depends on the doctor's experience and feel. Due to the lack of a precise adjustment mechanism, it is difficult to ensure that the depth of each sampling is consistent. In the sample processing link, after the circumcision knife obtains the skin sample, there is no special internal excision mechanism. This requires the doctor to separate and remove the sample through additional operations after sampling. This operation process is relatively cumbersome, which not only increases the operation time, but also easily leads to sample contamination problems.

[0005] To achieve the above object, the present invention provides the following technical solution: a skin sampler, comprising a shell, a screw sleeve is fixedly connected to one side surface of the shell, a top cover is fixedly connected to the upper surface of the screw sleeve, an adjustment mechanism is provided on the inner side surface of the shell, and a ring cutting mechanism is provided on one side surface of the adjustment mechanism;

[0006] The adjustment mechanism includes a micro motor, a conveyor belt, a limit plate, an adjustment screw, a sampling head, a sampling ring knife, a transparent scale observation cover, a gasket, a spring and a spring groove. The inner surface of the shell is fixedly connected with the micro motor, the one side surface of the micro motor is fixedly connected with the conveyor belt, the one side surface of the conveyor belt is fixedly connected with the limit plate, the inner surface of the conveyor belt is fixedly connected with the adjustment screw, the outer surface of the adjustment screw is fixedly connected with the sampling head, the one side surface of the sampling head is fixedly connected with the sampling ring knife, the outer surface of the shell is fixedly connected with the transparent scale observation cover, the lower surface of the shell is fixedly connected with the gasket, the one side surface of the gasket is fixedly connected with the spring, and the one side surface of the spring is fixedly connected with the spring groove.

[0007] Preferably, a rubber pad is provided on the top cover, and the top cover is threadedly connected to the shell sleeve through a screw sleeve.

[0008] Preferably, the inner wall size of the conveyor belt matches the outer wall size of the adjusting screw rod, and the adjusting screw rod forms a rotating structure with the micro motor through the conveyor belt.

[0009] Preferably, the adjusting screw rod forms a lifting structure through the adjusting screw rod and the micro motor, and two groups of the adjusting screw rods are symmetrically arranged around the central axis of the sampling head.

[0010] Preferably, the gasket rings are arranged in four groups symmetrically about the central axis of the shell, and spring limiting grooves are arranged on the upper and lower sides of the spring.

[0011] Preferably, the ring cutting mechanism comprises a sealing component, a small air pump, a ball, an inner ring, a connecting plate, a fan blade, a filter membrane, a connecting block, a ring cutting connecting seat, a rotating shaft, a cutter, a rotating ring groove and a rotating ring, one side surface of the sampling head is fixedly connected with a sealing component, one side surface of the sealing component is fixedly connected with a small air pump, the inner side surface of the sampling head is fixedly connected with a ball, one side surface of the ball is fixedly connected with the inner ring, one side surface of the inner ring is fixedly connected with a connecting plate, one side surface of the connecting plate is fixedly connected with a fan blade, one side surface of the inner ring is fixedly connected with a filter membrane, the lower surface of the inner ring is fixedly connected with a connecting block, the lower surface of the connecting block is fixedly connected with a ring cutting connecting seat, one side surface of the ring cutting connecting seat is fixedly connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a cutter, one side surface of the ring cutting connecting seat is provided with a rotating ring groove, and the inner side surface of the sampling ring cutter is provided with a rotating ring.

[0012] Preferably, the balls are distributed at equal intervals on the outer wall of the inner ring, and the fan blades are arranged in multiple groups symmetrically around the central axis of the inner ring.

[0013] Preferably, the connection blocks are symmetrically arranged in two groups about the central axis of the inner circle, and the fan blades are fixedly connected to the connection blocks via a rotating shaft.

[0014] Preferably, the outer wall size of the filter membrane matches the inner wall size of the inner ring, and the cutter forms a rotating structure with the annular cutting connection seat through a rotating shaft.

[0015] Preferably, the annular cutting connection seat is symmetrically arranged in two groups with respect to the central axis of the sampling ring cutter, and the size of the rotating ring groove is consistent with the size of the outer wall of the rotating ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the skin sampler, through the setting of the adjustment mechanism, when it is needed to use the skin sampler for sampling, the gasket ring of the sampler is gently pressed on the skin, because one side surface of the gasket ring is connected to the spring groove through the spring, the spring will provide a certain buffering force, so that the gasket ring can adaptively fit the skin surface, whether it is a flat or uneven part, it can be in close contact, thereby improving the sealing during the sampling process, when the micro motor is turned on, the micro motor starts to run, and the output shaft of the micro motor drives the conveyor belt fixedly connected thereto to start moving, because the inner surface of the conveyor belt is fixedly connected to the adjusting screw rod, as the conveyor belt rotates, the adjusting screw rod also starts to rotate, and during the rotation of the adjusting screw rod, because its outer surface is fixedly connected to the sampling head, according to the transmission principle of the screw rod, the sampling head will move along the axial direction of the adjusting screw rod, at this time, it can be observed by observing the outer surface of the shell sleeve By observing the scale on the transparent scale observation cover fixedly connected to the surface, you can understand the extended position of the sampling head and the sampling ring knife connected to it, so as to accurately control the extended length of the sampling ring knife, that is, adjust the puncture depth. When it is adjusted to the appropriate depth, prepare for the sampling operation. After the sampling is completed, turn off the micro motor and adjust the screw rod to stop rotating. If you need to sample or adjust again, you can start the micro motor again and adjust it in reverse according to the above steps to return the sampling head and the sampling ring knife to their initial positions, so that there is no need to rely on experience and feel to control the puncture depth during use. The adjustment mechanism can easily and accurately set the extended length of the sampling ring knife, thereby accurately controlling the puncture depth. Whether it is facing epidermal lesions or needing to go deep into the dermis to obtain samples, it can ensure that the sampling depth is just right. This not only improves the quality of the samples and provides a guarantee for accurate pathological diagnosis, but also reduces unnecessary harm to patients and reduces the probability of complications such as bleeding and pain.

[0017] Through the setting of the ring cutting mechanism, when in use, the skin sampler is placed on the skin position where sampling is required, ensuring that the sampling ring knife is aligned with the sampling area. At this time, the gasket ring will adaptively fit the skin surface through the spring and the spring limit groove, and the sampling head and the sampling ring knife are adjusted to the appropriate puncture depth by means of the adjustment mechanism, the micro motor, the conveyor belt, the adjustment screw and other components, and the small vacuum pump is turned on and starts to work. The sealing component is provided with a one-way vent, and an upward suction force is generated through the sealing component. Due to the one-way guide of the vent hole Through the setting, air can only enter the sampling head and cannot be discharged from other places, so that the air pressure in the sampling head gradually decreases, forming a negative pressure environment. The negative pressure makes the outer skin bulge toward the inside of the sampling ring knife. At the same time, this suction force acts on the cutter, and uses the characteristics of the rotating shaft to make the symmetrical cutter bend toward the middle and gradually approach the skin. When the air is drawn in, when the air passes through the gap between the inner ring and the fan blade, the airflow drives the fan blade to rotate, and the fan blade drives the inner ring to rotate as a whole through the connecting plate. During the rotation, the ball is on the inner surface of the sampling head The inner ring and its connected parts rotate to provide support and reduce friction. The connecting block, the circular cutting connecting seat and the connected rotating shaft and cutter under the inner ring also rotate accordingly. During the rotation of the cutter, the rotating ring groove cooperates with the rotating ring to stably perform circular cutting on the raised skin surface and cut off the skin tissue inside the sampling ring. In the whole process, the filter membrane plays a key filtering role. The filter membrane uses its fine mesh structure to prevent larger particulate matter such as skin tissue from being sucked into the device and the fan blades, thereby ensuring the normal operation and subsequent use of the equipment. Therefore, the circular cutting mechanism has a built-in complete circular cutting and removal system, which effectively solves the tedious problem that doctors need to perform additional separation and sample removal after traditional cutter sampling. There is no need to perform complicated manual operations to separate samples, which greatly simplifies the sampling process, significantly shortens the operation time, improves the sampling efficiency, and makes the entire sampling process more convenient and efficient. Moreover, the entire process is carried out in a relatively closed environment, which greatly reduces the risk of samples being contaminated by external bacteria, dust, etc.

[0018] Through the coordinated action of the adjustment mechanism and the circumcision mechanism, the device can achieve more complete sampling of human skin. The micromotor provides power support for the adjustment mechanism, accurately controls the position of the sampling head and the sampling ring knife, and ensures that the sampling ring knife can accurately reach the target skin depth, laying the foundation for the work of the circumcision mechanism. At the same time, the circumcision mechanism efficiently completes the circumcision of skin samples under the operation of negative pressure and related components. The two work together to improve the accuracy of sampling. Regardless of whether it is shallow or deep skin lesions, samples can be accurately obtained to avoid excessive damage to normal tissues, improve operational efficiency, reduce operation time, and simplify the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a side view structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the shell of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the sampling head driven by the adjustment mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the shell sleeve connected with the gasket ring and the spring of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the ring cutting mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the separation structure of the ring cutting mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the cutting component structure of the circular cutting mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the ring cutting mechanism of the present invention after operation.

[0027] In the figure: 1. shell; 2. screw sleeve; 3. top cover; 4. adjustment mechanism; 401. micro motor; 402. conveyor belt; 403. limit plate; 404. adjusting screw rod; 405. sampling head; 406. sampling ring knife; 407. transparent scale observation cover; 408. gasket; 409. spring; 410. spring groove; 5. ring cutting mechanism; 501. sealing device component; 502. small vacuum pump; 503. ball; 504. inner ring; 505. connecting plate; 506. fan blade; 507. filter membrane; 508. connecting block; 509. ring cutting connecting seat; 510. rotating shaft; 511. cutting knife; 512. rotating ring groove; 513. rotating ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 The present invention provides a technical solution: a skin sampler, comprising a shell 1, a screw sleeve 2 is fixedly connected to one side surface of the shell 1, a top cover 3 is fixedly connected to the upper surface of the screw sleeve 2, an adjustment mechanism 4 is arranged on the inner side surface of the shell 1, and a circumcision mechanism 5 is arranged on one side surface of the adjustment mechanism 4;

[0030] The adjusting mechanism 4 comprises a micro motor 401, a conveyor belt 402, a limit plate 403, an adjusting screw rod 404, a sampling head 405, a sampling ring knife 406, a transparent scale observation cover 407, a gasket 408, a spring 409 and a spring groove 410. The inner surface of the shell 1 is fixedly connected with the micro motor 401, the one side surface of the micro motor 401 is fixedly connected with the conveyor belt 402, the one side surface of the conveyor belt 402 is fixedly connected with the limit plate 403, the inner surface of the conveyor belt 402 is fixedly connected with the adjusting screw rod 404, the outer surface of the adjusting screw rod 404 is fixedly connected with the sampling head 405, the one side surface of the sampling head 405 is fixedly connected with the sampling ring knife 406, the outer surface of the shell 1 is fixedly connected with the transparent scale observation cover 407, the shell A gasket 408 is fixedly connected to the lower surface of the sleeve 1, a spring 409 is fixedly connected to one side surface of the gasket 408, a spring groove 410 is fixedly connected to one side surface of the spring 409, and through the arrangement of the micro motor 401, the conveyor belt 402, the limit plate 403, the adjusting screw rod 404, the sampling head 405, the sampling ring knife 406, the transparent scale observation cover 407, the gasket 408, the spring 409 and the spring groove 410, when in use, when it is necessary to use the skin sampler for sampling, the gasket 408 of the sampler is gently pressed on the skin, because one side surface of the gasket 408 is connected to the spring groove 410 through the spring 409, the spring 409 will provide a certain buffering force, so that the gasket 408 can adaptively fit the skin surface, whether it is flat The micro motor 401 can be in close contact with flat or uneven parts, which improves the sealing during the sampling process. When the micro motor 401 is turned on, the micro motor 401 starts to run, and the output shaft of the micro motor 401 drives the conveyor belt 402 fixedly connected thereto to start moving. Since the inner surface of the conveyor belt 402 is fixedly connected to the adjusting screw rod 404, as the conveyor belt 402 rotates, the adjusting screw rod 404 also starts to rotate. During the rotation of the adjusting screw rod 404, since its outer surface is fixedly connected to the sampling head 405, according to the transmission principle of the screw rod, the sampling head 405 will move along the axial direction of the adjusting screw rod 404. At this time, the scale on the transparent scale observation cover 407 fixedly connected to the outer surface of the shell 1 can be observed to understand the sampling The extended position of the head 405 and the sampling ring knife 406 connected thereto can be adjusted to accurately control the extended length of the sampling ring knife 406, that is, to adjust the puncture depth. When the appropriate depth is adjusted, the sampling operation is ready. After the sampling is completed, the micro motor 401 is turned off and the screw rod 404 is adjusted to stop rotating. If sampling or adjustment is required again, the micro motor 401 can be started again and reversely adjusted according to the above steps to return the sampling head 405 and the sampling ring knife 406 to the initial position, so that the puncture depth does not need to be controlled by experience and feel during use. The adjustment mechanism 4 can easily and accurately set the extended length of the sampling ring knife 406, thereby accurately controlling the puncture depth, whether it is facing the lesions of the epidermis or the situation where it is necessary to go deep into the dermis to obtain samples.This can ensure that the sampling depth is just right, which not only improves the quality of the sample and provides a guarantee for accurate pathological diagnosis, but also reduces unnecessary harm to patients and reduces the probability of complications such as bleeding and pain.

[0031] Furthermore, a rubber pad is provided on the top cover 3, and the top cover 3 is threadedly connected to the shell sleeve 1 through the screw sleeve 2. Through the arrangement of the screw sleeve 2 and the top cover 3, when in use, it can effectively prevent external dust, impurities and other pollutants from entering the interior of the sampler, and avoid pollution and damage to internal precision components such as the micro motor 401 and the adjusting screw rod 404, thereby extending the service life of the equipment, and the threaded connection method allows the top cover 3 to be easily removed from the shell sleeve 1. When the internal components of the sampler need to be cleaned, repaired or replaced, the doctor or maintenance personnel can easily unscrew the screw sleeve 2 and remove the top cover 3, thereby quickly accessing the internal components, thereby improving the convenience and efficiency of equipment maintenance.

[0032] Furthermore, the inner wall size of the conveyor belt 402 is consistent with the outer wall size of the adjusting screw rod 404. The adjusting screw rod 404 forms a rotating structure with the micro motor 401 through the conveyor belt 402. Through the setting of the conveyor belt 402, when in use, the inner wall of the conveyor belt 402 is highly consistent with the outer wall size of the adjusting screw rod 404, and can achieve close and stable contact. This allows the power to be efficiently and losslessly transmitted to the adjusting screw rod 404 through the conveyor belt 402 when the micro motor 401 is running, ensuring that the adjusting screw rod 404 can quickly and stably respond to the operating instructions of the micro motor 401, thereby ensuring the timeliness and continuity of the sampling depth adjustment operation.

[0033] Furthermore, the adjusting screw rod 404 forms a lifting structure through the adjusting screw rod 404 and the micro motor 401. The adjusting screw rod 404 is symmetrically arranged in two groups with the central axis of the sampling head 405. Through the setting of the adjusting screw rod 404, when in use, the adjusting screw rod 404 is symmetrically arranged in two groups with the central axis of the sampling head 405, thereby enhancing the balance of the entire structure. During the lifting and lowering process of the sampling head 405, the two groups of adjusting screw rods 404 can evenly share the load, thereby avoiding the tilting or deviation of the sampling head 405 due to uneven force, and the two groups of symmetrically arranged adjusting screw rods 404 can ensure that the sampling head 405 is always perpendicular to the skin surface, thereby ensuring the accuracy of sampling and the integrity of the sample.

[0034] Furthermore, four groups of gasket rings 408 are symmetrically arranged with respect to the central axis of the shell 1, and spring limiting grooves are arranged on the upper and lower sides of the spring 409. Through the arrangement of the gasket rings 408 and the spring 409, when in use, when skin sampling is performed, the four groups of gasket rings 408 can evenly contact the skin surface from different directions, and can better adapt to various skin contours, such as joints, facial depressions or protrusions, etc. This tight fit can effectively prevent outside air from entering the sampling area, ensuring the formation of a stable negative pressure environment during the negative pressure sampling process, thereby significantly improving the success rate of sampling.

[0035] Furthermore, the ring cutting mechanism 5 includes a sealing component 501, a small air pump 502, a ball 503, an inner ring 504, a connecting plate 505, a fan blade 506, a filter membrane 507, a connecting block 508, a ring cutting connecting seat 509, a rotating shaft 510, a cutter 511, a rotating ring groove 512 and a rotating ring 513. The sealing component 501 is fixedly connected to one side surface of the sampling head 405, the small air pump 502 is fixedly connected to one side surface of the sealing component 501, the ball 503 is fixedly connected to the inner ring 504 on one side surface of the ball 503, the inner ring 504 is fixedly connected to the connecting plate 505 on one side surface, and the connecting plate 505 is fixedly connected to one side surface of the connecting plate There are fan blades 506, one side surface of the inner ring 504 is fixedly connected with a filter membrane 507, the lower surface of the inner ring 504 is fixedly connected with a connecting block 508, the lower surface of the connecting block 508 is fixedly connected with a ring cutting connecting seat 509, one side surface of the ring cutting connecting seat 509 is fixedly connected with a rotating shaft 510, the outer surface of the rotating shaft 510 is fixedly connected with a cutter 511, one side surface of the ring cutting connecting seat 509 is provided with a rotating ring groove 512, and the inner side surface of the sampling ring knife 406 is provided with a rotating ring 513. Through the sealing device component 501, the small air pump 502, the ball 503, the inner ring 504, the connecting plate 505, the fan blades 506, the filter membrane 507, the connecting block 508, the ring cutting connecting seat 509, the rotating shaft 510, the cutting knife 511, the one side surface of the ring cutting connecting seat 509 is fixedly connected with a rotating ring groove 512, and the inner side surface of the sampling ring knife 406 is provided with a rotating ring 513. The arrangement of the shaft 510, the cutting knife 511, the rotating ring groove 512 and the rotating ring 513, when in use, first, place the skin sampler at the skin position where sampling is required, ensure that the sampling ring knife 406 is aligned with the sampling area, at this time, the gasket ring 408 will adaptively fit the skin surface through the spring 409 and the spring limit groove, use the adjustment mechanism 4, through the micro motor 401, the conveyor belt 402, the adjustment screw rod 404 and other components to adjust the sampling head 405 and the sampling ring knife 406 to a suitable puncture depth, turn on the small vacuum pump 502, the small vacuum pump 502 starts to work, the sealing device component 501 is provided with a one-way vent, and an upward suction force is generated through the sealing device component 501. Due to the one-way conduction setting of the vent hole, the air The air can only enter the sampling head 405 and cannot be discharged from other places, so that the air pressure in the sampling head 405 gradually decreases, forming a negative pressure environment. The negative pressure makes the external skin bulge toward the inside of the sampling ring knife 406. At the same time, this suction force acts on the cutter 511, and the characteristics of the rotating shaft 510 are used to make the symmetrical cutter 511 bend toward the middle and gradually approach the skin. When the air is being drawn in, when the air passes through the gap between the inner ring 504 and the fan blade 506, the airflow drives the fan blade 506 to rotate, and the fan blade 506 drives the inner ring 504 to rotate as a whole through the connecting plate 505. During the rotation, the ball 503 rolls on the inner surface of the sampling head 405, providing support for the rotation of the inner ring 504 and its connected parts and reducing friction.The connecting block 508, the annular cutting connecting seat 509, the rotating shaft 510 and the cutter 511 connected thereto and other components also rotate accordingly. During the rotation process, the cutter 511 stably performs annular cutting operation on the raised skin surface through the cooperation of the rotating ring groove 512 and the rotating ring 513, and cuts off the skin tissue inside the sampling ring cutter 406. In the whole process, the filter membrane 507 plays a key filtering role. The filter membrane 507 uses its fine mesh structure to prevent larger particles such as skin tissue from being sucked into the device and The fan blade 506 is inside to ensure the normal operation and subsequent use of the equipment, so that the circular cutting mechanism 5 has a built-in perfect circular cutting and removal system, which effectively solves the cumbersome problem that the doctor needs to perform additional separation and removal of samples after the traditional cutter 511 takes samples. There is no need to perform complex manual operations to separate samples, which greatly simplifies the sampling process, significantly shortens the operation time, improves the sampling efficiency, and makes the entire sampling process more convenient and efficient. In addition, the entire process is carried out in a relatively closed environment, which greatly reduces the risk of samples being contaminated by external bacteria, dust, etc.

[0036] Furthermore, the balls 503 are distributed at equal intervals on the outer wall of the inner ring 504, and the fan blades 506 are symmetrically arranged in multiple groups around the central axis of the inner ring 504. Through the arrangement of the fan blades 506, when in use, the fan blades 506 are symmetrically arranged in multiple groups around the central axis of the inner ring 504. When the airflow passes through the gap between the inner ring 504 and the fan blades 506, the symmetrical fan blades 506 can be evenly affected by the thrust of the airflow. This symmetrical design can effectively avoid the problem of unbalanced rotation of the inner ring 504 caused by excessive or insufficient thrust of the airflow on one side, thereby ensuring that the inner ring 504 can rotate smoothly and at a uniform speed.

[0037] Furthermore, two groups of connecting blocks 508 are symmetrically arranged with respect to the central axis of the inner ring 504, and the fan blades 506 are fixedly connected to the connecting blocks 508 through the rotating shaft. Through the setting of the connecting blocks 508, when in use, the fan blades 506 are fixedly connected to the connecting blocks 508 through the rotating shaft, thereby optimizing the power transmission process. When the airflow drives the fan blades 506 to rotate, due to the tightness of the fixed connection, the rotational power of the fan blades 506 can be efficiently transmitted to the connecting blocks 508 through the rotating shaft, thereby driving the inner ring 504, the annular connecting seat 509, the rotating shaft 510, the cutter 511 and other components connected to the connecting blocks 508 to rotate synchronously.

[0038] Furthermore, the outer wall size of the filter membrane 507 is consistent with the inner wall size of the inner ring 504, and the cutter 511 forms a rotating structure with the ring cutting connecting seat 509 through the rotating shaft 510. Through the setting of the filter membrane 507, when in use, the outer wall size of the filter membrane 507 is consistent with the inner wall size of the inner ring 504, ensuring that the filter membrane 507 can be tightly installed in the inner ring 504. When the small vacuum pump 502 is working, air can only enter the inner ring 504 through the filter membrane 507, thereby effectively blocking skin debris generated during the ring cutting process, preventing these impurities from entering the interior of the equipment, avoiding damage to precision components such as the small vacuum pump 502 and the fan blades 506, and extending the service life of the equipment.

[0039] Furthermore, two groups of the annular cutting connecting seat 509 are symmetrically arranged with respect to the central axis of the sampling ring knife 406. The size of the rotating annular groove 512 matches the size of the outer wall of the rotating ring 513. Through the setting of the rotating annular groove 512, when in use, the size of the rotating annular groove 512 matches the size of the outer wall of the rotating ring 513, ensuring that the annular cutting connecting seat 509 can roll smoothly in the rotating ring 513. When the cutter 511 rotates to cut the skin, the close fit between the rotating ring 513 and the rotating annular groove 512 provides the cutter 511 with precise rotation guide, so that the cutter 511 always moves along the predetermined circular trajectory, ensuring the accuracy and stability of the annular cutting.

[0040] Working principle: This skin sampler is set by the adjustment mechanism 4. When the skin sampler is needed for sampling, the gasket ring 408 of the sampler is gently pressed on the skin. Since one side surface of the gasket ring 408 is connected to the spring groove 410 through the spring 409, the spring 409 provides a certain buffering force, so that the gasket ring 408 can adaptively fit the skin surface, whether it is a flat or uneven part, it can be in close contact, thereby improving the sealing during the sampling process. When the micro motor 401 is turned on, the micro motor 401 starts to run, and the output shaft of the micro motor 401 drives the conveyor belt 402 fixedly connected thereto to start moving. Since the inner surface of the conveyor belt 402 is fixedly connected to the adjusting screw 404, as the conveyor belt 402 rotates, the adjusting screw 404 also starts to rotate. During the rotation of the adjusting screw 404, since its outer surface is fixedly connected to the sampling head 405, according to the transmission principle of the screw, the sampling head 405 will move along the axial direction of the adjusting screw 404. At this time, by observing the scale on the transparent scale observation cover 407 fixedly connected to the outer surface of the shell 1, the extended position of the sampling head 405 and the sampling ring knife 406 connected thereto can be understood, thereby accurately controlling the extended length of the sampling ring knife 406, that is, adjusting the puncture depth. When the appropriate depth is adjusted, the sampling operation is prepared. After the sampling is completed, the micro motor 401 is turned off and the screw rod 404 is adjusted to stop rotating. If sampling or adjustment is required again, the micro motor 401 can be started again and reversely adjusted according to the above steps to return the sampling head 405 and the sampling ring knife 406 to the initial position, so that there is no need to rely on experience and feel to control the puncture depth during use. The adjustment mechanism 4 can easily and accurately set the extended length of the sampling ring knife 406, thereby accurately controlling the puncture depth. Whether it is facing epidermal lesions or needing to go deep into the dermis to obtain samples, it can ensure that the sampling depth is just right. This not only improves the quality of the sample and provides a guarantee for accurate pathological diagnosis, but also reduces unnecessary harm to the patient and reduces the probability of complications such as bleeding and pain. Through the setting of the circumcision mechanism 5, when using When using, first, place the skin sampler on the skin position where sampling is required, and ensure that the sampling ring knife 406 is aligned with the sampling area. At this time, the gasket ring 408 will adaptively fit the skin surface through the spring 409 and the spring limit groove, and use the adjustment mechanism 4 to adjust the sampling head 405 and the sampling ring knife 406 to a suitable puncture depth through the micro motor 401, the conveyor belt 402, the adjustment screw rod 404 and other components, and turn on the small air pump 502. The small air pump 502 starts to work, and the sealer component 501 is provided with a one-way vent. The sealer component 501 generates an upward suction force. Due to the one-way conduction setting of the vent hole, air can only enter the interior of the sampling head 405 and cannot be discharged from other places, so that the air pressure in the sampling head 405 gradually decreases, forming a negative pressure environment. The negative pressure makes the external skin bulge toward the interior of the sampling ring knife 406. At the same time,This suction force acts on the cutter 511, and the characteristics of the rotating shaft 510 are used to make the symmetrical cutter 511 bend toward the middle and gradually approach the skin. When air is drawn in, the air passes through the gap between the inner ring 504 and the fan blade 506, and the airflow drives the fan blade 506 to rotate. The fan blade 506 drives the inner ring 504 to rotate as a whole through the connecting plate 505. During the rotation, the ball 503 rolls on the inner surface of the sampling head 405, providing support and reducing friction for the rotation of the inner ring 504 and its connected parts. The connecting block 508 under the inner ring 504, the circular cutting connecting seat 509, and the rotating shaft 510 and cutter 511 connected thereto also rotate accordingly. During the rotation process, the cutter 511 stably performs a circular cutting operation on the raised skin surface through the cooperation of the rotating ring groove 512 and the rotating ring 513, and cuts off the skin tissue inside the sampling ring knife 406. In the whole process, the filter membrane 507 plays a key filtering role. The filter membrane 507 uses its fine mesh structure to prevent larger particles such as skin tissue from being sucked into the device and the fan blade 506, ensuring the normal operation and subsequent use of the device. Therefore, the circumcision mechanism 5 has a built-in complete circumcision and removal system, which effectively solves the cumbersome problem that the doctor needs to perform additional separation and removal of samples after the traditional circumcision knife 511 takes samples. There is no need to perform complex manual operations to separate samples, which greatly simplifies the sampling process, significantly shortens the operation time, improves the sampling efficiency, and makes the entire sampling process more convenient and efficient. In addition, the entire process is carried out in a relatively closed environment, which greatly reduces the risk of samples being contaminated by external bacteria, dust, etc. The model of the micro motor 401 is WL-37RS528, and the model of the small vacuum pump 502 is SH-168. ,

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skin sampler, comprising a housing (1), characterized in that: A screw sleeve (2) is fixedly connected to one side surface of the shell (1), a top cover (3) is fixedly connected to the upper surface of the screw sleeve (2), an adjustment mechanism (4) is provided on the inner side surface of the shell (1), and a ring cutting mechanism (5) is provided on one side surface of the adjustment mechanism (4); The adjusting mechanism (4) comprises a micro motor (401), a conveyor belt (402), a limit plate (403), an adjusting screw rod (404), a sampling head (405), a sampling ring knife (406), a transparent scale observation cover (407), a gasket (408), a spring (409) and a spring groove (410); the inner surface of the shell (1) is fixedly connected to the micro motor (401); the one side surface of the micro motor (401) is fixedly connected to the conveyor belt (402); the one side surface of the conveyor belt (402) is fixedly connected to the limit plate (403); the conveyor The inner surface of the belt (402) is fixedly connected to an adjusting screw rod (404), the outer surface of the adjusting screw rod (404) is fixedly connected to a sampling head (405), one side surface of the sampling head (405) is fixedly connected to a sampling ring knife (406), the outer surface of the shell (1) is fixedly connected to a transparent scale observation cover (407), the lower surface of the shell (1) is fixedly connected to a gasket (408), one side surface of the gasket (408) is fixedly connected to a spring (409), and one side surface of the spring (409) is fixedly connected to a spring groove (410).

2. A skin sampler according to claim 1, characterized in that: A rubber pad is provided on the top cover (3), and the top cover (3) is threadedly connected to the shell (1) via a threaded sleeve (2).

3. A skin sampler according to claim 1, characterized in that: The inner wall size of the conveyor belt (402) matches the outer wall size of the adjusting screw rod (404), and the adjusting screw rod (404) forms a rotating structure through the conveyor belt (402) and the micro motor (401).

4. A skin sampler according to claim 1, characterized in that: The adjusting screw rod (404) forms a lifting structure through the adjusting screw rod (404) and the micro motor (401), and two groups of the adjusting screw rod (404) are symmetrically arranged around the central axis of the sampling head (405).

5. A skin sampler according to claim 1, characterized in that: The backing rings (408) are arranged in four groups symmetrically about the central axis of the shell (1), and spring limiting grooves are arranged on the upper and lower sides of the spring (409).

6. A skin sampler according to claim 1, characterized in that: The ring cutting mechanism (5) comprises a sealing component (501), a small air pump (502), a ball (503), an inner ring (504), a connecting plate (505), a fan blade (506), a filter membrane (507), a connecting block (508), a ring cutting connecting seat (509), a rotating shaft (510), a cutter (511), a rotating ring groove (512) and a rotating ring (513); a sealing component (501) is fixedly connected to a side surface of the sampling head (405); a small air pump (502) is fixedly connected to a side surface of the sealing component (501); a ball (503) is fixedly connected to an inner surface of the sampling head (405); a side surface of the ball (503) is fixedly connected to an inner ring (504); A connecting plate (505) is fixedly connected to one side surface of the inner ring (504), a fan blade (506) is fixedly connected to one side surface of the connecting plate (505), a filter membrane (507) is fixedly connected to one side surface of the inner ring (504), a connecting block (508) is fixedly connected to the lower surface of the inner ring (504), a ring-cut connecting seat (509) is fixedly connected to the lower surface of the connecting block (508), a rotating shaft (510) is fixedly connected to one side surface of the ring-cut connecting seat (509), a cutting knife (511) is fixedly connected to the outer surface of the rotating shaft (510), a rotating ring groove (512) is provided on one side surface of the ring-cut connecting seat (509), and a rotating ring (513) is provided on the inner surface of the sampling ring knife (406).

7. A skin sampler according to claim 6, characterized in that: The balls (503) are distributed at equal intervals on the outer wall of the inner ring (504), and the fan blades (506) are arranged in multiple groups symmetrically around the central axis of the inner ring (504).

8. A skin sampler according to claim 6, characterized in that: The connection blocks (508) are symmetrically arranged in two groups with respect to the central axis of the inner ring (504), and the fan blades (506) are fixedly connected to the connection blocks (508) via a rotating shaft.

9. A skin sampler according to claim 6, characterized in that: The outer wall size of the filter membrane (507) matches the inner wall size of the inner ring (504), and the cutter (511) forms a rotating structure with the annular cutting connection seat (509) via the rotating shaft (510).

10. A skin sampler according to claim 6, characterized in that: The annular cutting connection seat (509) is symmetrically arranged in two groups with respect to the central axis of the sampling ring knife (406), and the size of the rotating ring groove (512) is consistent with the size of the outer wall of the rotating ring (513).

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