A skin biopsy sampling device and method of use thereof

Abstract

The application discloses a skin biopsy sampling device and belongs to the technical field of medical devices, which comprises two adjustable-height mounting racks, spring telescopic rods are mounted on the two mounting racks, L-shaped fixing rods are fixed at one end of the spring telescopic rods, a positioning ring is fixed at the bottom ends of the two fixing rods, a sampling mechanism is arranged between the two fixing rods, a piston sampling cylinder is movably arranged on the sampling mechanism, a ring cutter is fixed at the bottom end of the piston sampling cylinder, and a scale is arranged on the side wall of the piston sampling cylinder; the application is simple to operate and high in precision, has a pre-cooling function, directly reduces the sensitivity of skin nerve endings by using low temperature, reduces the discomfort of a patient, can realize automatic replacement of gauze at the same time, uses brand-new gauze to contact the skin every time, completely avoids the risk of bacterial residue and cross infection, and is suitable for multiple sampling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a skin biopsy sampling device and a method for using the same. BACKGROUND

[0002] Skin biopsy is the core means for diagnosing skin diseases (such as inflammatory skin diseases, pigmentation diseases, skin tumors, etc.), and is also the "gold standard" for determining the pathological type and depth of skin malignant tumors (such as melanoma and basal cell carcinoma). The diagnosis result directly determines the formulation of the subsequent treatment plan, and has an irreplaceable position in the dermatological diagnosis and treatment system.

[0003] Currently, the conventional operation process of skin biopsy sampling in clinical practice still has significant technical limitations, mainly in the dual deficiencies of operation complexity and patient comfort. On the one hand, during the sampling process, the doctor needs to use surgical knives, trephines and other instruments to cut the tissue, and needs to accurately control the cutting depth and range to obtain qualified cylindrical or sheet-shaped tissue samples. The overall operation steps are tedious, time-consuming, and in primary medical institutions or emergency treatment scenarios, the frequent switching of tools can easily reduce the operation efficiency.

[0004] On the other hand, in order to reduce the pain during the operation, the micro-needle anesthesia technology has been gradually adopted to replace the traditional subcutaneous injection anesthesia. The local anesthetic is penetrated to the skin surface layer through a micro-needle array, reducing the strong pain caused by the injection needle. However, in practice, this anesthesia method still has the following defects that cannot be avoided: first, when the micro-needle array pierces the skin surface layer, even if the needle body is very thin, it will still cause mechanical stimulation to the nerve endings of the skin, causing some sensitive patients to experience "instant stinging similar to mosquito bites". This pain occurs before the anesthetic takes effect, becoming the primary source of discomfort during the anesthesia process; second, there is a "time difference" of several seconds between the release of the anesthetic from the micro-needle and its penetration to the nerve endings of the dermis layer to completely block the pain signal. If the operation rhythm is not properly controlled, the cutting may be started before the anesthetic fully takes effect, causing the patient to perceive a weak pain; third, there are individual differences in the sensitivity of different patients to anesthetics. Some patients may still experience slight discomfort during the skin pulling and tissue separation during the subsequent cutting process even after receiving micro-needle anesthesia. Although the above residual pain is relatively mild, it still intensifies the psychological fear of the patient (especially children and the elderly) towards the biopsy operation, and even affects the cooperation degree. SUMMARY

[0005] The present application relates to the technical field of medical devices, in particular to a skin biopsy sampling device and a method for using the same.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A skin biopsy sampling device and a method for using the same, comprising two height-adjustable mounting frames, spring telescopic rods are mounted on the two mounting frames, one end of the spring telescopic rods is fixed with an L-shaped fixing rod, the bottom ends of the two fixing rods are fixed with a positioning ring, a sampling mechanism is placed between the two fixing rods, a piston sampling cylinder is movably arranged on the sampling mechanism, a scalping knife is fixed at the bottom end of the piston sampling cylinder, and a scale is arranged on the side wall of the piston sampling cylinder.

[0008] A notch is arranged on one side of the positioning ring, and a cooling box is slidably connected with the notch through grooves arranged on two sides of the cooling box, an opening is arranged on one side of the bottom wall of the cooling box, an open end is arranged on one side wall of the cooling box, and an unwinding drum and a winding drum are arranged in the open end, and ratchets are arranged on two sides of the winding drum.

[0009] L-shaped connecting rods are fixed on the two mounting frames, a connecting column is fixed at one end of the two connecting rods, a fixed plate is fixed on one side of the connecting column, one end of the fixed plate extends into the open end of the cooling box, ratchet teeth matched with the ratchets are arranged on the upper surface of the fixed plate, and a driving mechanism is arranged between the cooling box and the sampling mechanism.

[0010] As a further scheme of the present application, the sampling mechanism comprises a cylinder body provided with an open end at the bottom, the piston sampling cylinder is movably arranged on the top wall of the cylinder body, the bottom of the cylinder body is symmetrically provided with fixed blocks, the lower surfaces of the fixed blocks are fixed with insertion rods, insertion holes matched with the insertion rods are formed in the insertion rods, and rubber rings are sleeved on the insertion rods.

[0011] As a further scheme of the present application, a fixed ring is fixed on the piston sampling cylinder, a first spring is connected between the fixed ring and the top wall of the cylinder body, a piston rod is arranged in the piston sampling cylinder, a piston is arranged at the bottom end of the piston rod, and a handle is arranged on the piston sampling cylinder.

[0012] As a further scheme of the present application, the driving mechanism comprises a first wedge-shaped block fixed on the piston sampling cylinder, a second wedge-shaped block is fixed on the top wall of the cooling box through a stand, and the first wedge-shaped block is in contact with the second wedge-shaped block.

[0013] As a further scheme of the present application, a disinfectant liquid box is fixed at the top of the connecting column, a driving rod is fixed between the disinfectant liquid box and the stand, a liquid outlet hose is connected to the bottom wall of the disinfectant liquid box, a spraying pipe is fixed at one end of the cooling box close to the open end, a plurality of spray heads are symmetrically arranged on the spraying pipe, one end of the liquid outlet hose is in communication with the spraying pipe, a piston plate is arranged in the disinfectant liquid box, and a pressure valve is arranged on the liquid outlet hose.

[0014] As a further scheme of the present application: the driving rod comprises a cylinder, an air outlet pipe is connected between the cylinder and the disinfectant box, an air inlet pipe is further connected to the cylinder, a one-way valve is arranged on the air outlet pipe and the air inlet pipe, a movable rod is movably arranged at one end of the cylinder away from the air outlet pipe, one end of the movable rod is connected to the stand, and a sealing push block is fixed to the other end of the movable rod, and a second spring is connected between the sealing push block and the inner wall of the cylinder.

[0015] As a further scheme of the present application: the mounting frame comprises a base, a vertical rod is fixed to the base, a lifting rod is movably arranged on the vertical rod, the spring telescopic rod is fixed to the lifting rod, one end of the connecting rod is fixedly connected to the lifting rod, and a plurality of cushion blocks are arranged between the lifting rod and the base.

[0016] A method for using a skin biopsy sampling device, comprising the following steps:

[0017] S1, winding gauze on the unwinding drum, the gauze is multi-layered, and an ice bag is placed in the cooling box, the ice bag is located at the opening, and one end of the gauze is connected to the winding drum by winding around the ice bag;

[0018] S2, place the mounting frame, adjust the height of the positioning ring to be located around the skin to be sampled, the ice bag extends out of the opening, the ice bag cools and anesthetizes the sampling site through the gauze, and at this time the doctor performs other preparation work;

[0019] S3, after the preparation is completed, the doctor first performs microneedle anesthesia on the patient, then pushes the piston sampling cylinder downward, the cooling box moves away from the sampling site under the action of the driving mechanism, then the loop cutter completes sampling, and the skin sample is sucked into the piston sampling cylinder through negative pressure, and the sampling is completed.

[0020] The beneficial effects of the present application are:

[0021] (1) The ice bag of the present application pre-cools the sampling site, directly reduces the sensitivity of the skin nerve endings by using low temperature, not only completely covers the "instant pain" before microneedle puncture, but also delays the skin tissue metabolism, prolongs the onset time and action strength of the subsequent microneedle anesthetic, completely eliminates the weak pain caused by poor anesthetic effect and individual sensitivity, and minimizes the discomfort during the whole sampling process, greatly relieving the psychological fear of biopsy of patients (especially children and the elderly sensitive population).

[0022] (2) The gauze arranged outside the ice bag of the present application forms a buffer layer, avoiding direct contact between the ice bag and the skin, which not only guarantees the "low-temperature analgesia" effect (maintaining the skin temperature in the safe analgesia interval), but also prevents skin frostbite, swelling and other complications caused by low temperature of the ice bag, and balances the analgesic effect and use safety.

[0023] (3) The application can realize automatic replacement of gauze synchronously, and new gauze is used to contact the skin every time, so that the risk of bacterial residue and cross infection is completely avoided, and the application is especially suitable for the multiple sampling requirements of multiple skin lesion patients, and the doctor does not need to frequently disinfect or prepare new analgesic tools between multiple sampling, and only needs to quickly start the next sampling through the automatic switching function of the device, so that the operation efficiency in the multiple patient centralized diagnosis and treatment scene is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below in combination with the drawings.

[0025] Figure 1 is a first perspective view of the whole application;

[0026] Figure 2 is a second perspective view of the whole application;

[0027] Figure 3 is a schematic view of the internal structure of the barrel of the application;

[0028] Figure 4 is a first perspective view of the positioning ring and the cooling box of the application;

[0029] Figure 5 is a second perspective view of the positioning ring and the cooling box of the application;

[0030] Figure 6 is a schematic view of the three-dimensional structure of the cooling box of the application;

[0031] Figure 7 is a schematic view of the internal structure of the cooling box of the application;

[0032] Figure 8 is a schematic view of the internal structure of the disinfectant box and the driving rod of the application;

[0033] Figure 9 is a schematic view of the structure of the mounting frame of the application.

[0034] In the figure: 1, mounting frame; 101, base; 102, vertical rod; 103, lifting rod; 104, cushion block; 2, spring telescopic rod; 3, fixed rod; 4, positioning ring; 5, sampling mechanism; 501, cylinder; 502, fixed block; 503, plug rod; 504, piston sampling cylinder; 505, fixed ring; 506, ring cutter; 507, first spring; 508, piston rod; 6, cooling box; 601, opening; 602, sliding slot; 603, unwinding drum; 604, winding drum; 605, ratchet; 7, first wedge block; 8, vertical column; 9, second wedge block; 10, connecting rod; 11, connecting column; 12, fixed plate; 13, ratchet; 14, disinfectant box; 1401, piston plate; 15, drive rod; 1501, cylinder; 1502, movable rod; 1503, sealing push block; 1504, second spring; 1505, air outlet pipe; 1506, air inlet pipe; 16, liquid outlet hose; 17, spraying pipe; 18, spray head.

[0035] The drawings are only used for illustrative description, and cannot be understood as limitation to the present application; in order to better illustrate the present embodiment, some components in the drawings are omitted, enlarged or reduced, and do not represent the size and shape of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] Please refer to Figures 1 to 6As shown, the present application is a skin biopsy sampling device, comprising two adjustable height mounting racks 1, two mounting racks 1 are provided with spring telescopic rods 2, one end of the spring telescopic rod 2 is fixed with an L-shaped fixed rod 3, the bottom ends of the two fixed rods 3 are commonly fixed with a positioning ring 4, a sampling mechanism 5 is placed between the two fixed rods 3, the sampling mechanism 5 is movably provided with a piston sampling cylinder 504, the bottom end of the piston sampling cylinder 504 is fixed with a ring cutter 506, and a scale is arranged on the side wall of the piston sampling cylinder 504; One side of the positioning ring 4 is provided with a notch, the cooling box 6 is slidably connected with the notch through the sliding grooves 602 arranged on both sides, one side of the bottom wall of the cooling box 6 is provided with an opening 601, one side wall of the cooling box 6 is provided with an open mouth, and a pay-off drum 603 and a winding drum 604 are arranged in the open mouth, and the winding drum 604 is provided with a ratchet wheel 605 on both sides; Two mounting racks 1 are fixed with L-shaped connecting rods 10, one end of the two connecting rods 10 is commonly fixed with a connecting column 11, one side of the connecting column 11 is fixed with a fixed plate 12, and one end of the fixed plate 12 extends into the open mouth of the cooling box 6, the upper surface of the fixed plate 12 is provided with a ratchet 13 matched with the ratchet wheel 605, and a driving mechanism is arranged between the cooling box 6 and the sampling mechanism 5, which pushes the cooling box 6 to translate when the sampling mechanism 5 descends; An ice bag is placed in the cooling box 6, the ice bag is located at the opening 601, gauze is wound on the pay-off drum 603, the gauze is multi-layered, one end of the gauze is wound around the ice bag and connected with the winding drum 604, at this time the gauze is located outside the ice bag, the mounting rack 1 is placed and the height is adjusted, so that the positioning ring 4 is located at the sampling position of the patient, the ice bag and the gauze precool the sampling position through the opening 601, at this time the doctor can prepare for the operation, after a period of cooling, microneedle anesthesia is carried out, then the piston sampling cylinder 504 is pushed downward, under the action of the driving mechanism, the cooling box 6 automatically moves away from the sampling position, then the sampling is completed by the ring cutter 506, and the sample is sucked into the piston sampling cylinder 504 by negative pressure, the current conventional operation needs to use surgical knives, trephines and other tools for cutting, and the sample is taken out with forceps after cutting, the operation steps are complicated, and it is strongly dependent on the experience and skill of the operator, the present application is simple to operate, convenient to cut and sample, easy to use, and has little demand for the experience and skill of the operator;

[0038] During the movement of the cooling box 6, the winding drum 604 rotates under the action of the ratchet wheel 605 and the ratchet 13, the used gauze is wound, the unused gauze is moved to the outside of the ice bag, and the doctor does not need to frequently disinfect or prepare a new analgesic tool during the interval of multiple sampling, thereby improving the work efficiency. At this time, the fixed plate 12 enters the cooling box 6, and the opening 601 is shielded, so that the ice bag is prevented from contacting the skin of other parts and causing discomfort to the patient. It should be noted that the ratchet 13 can be deflected, and when the cooling box 6 is away from the sampling position, the ratchet 13 is fixed, so that the ratchet wheel 605 rotates. When the cooling box 6 is reset, the ratchet 13 is deflected, and the ratchet wheel 605 cannot rotate. The cooperation of the ratchet wheel 605 and the ratchet 13 is prior art, and the specific structure is not described here.

[0039] Referring to Figures 1 to 3 The sampling mechanism 5 comprises a cylinder body 501 provided with an open top, a piston sampling cylinder 504 movably arranged on the top wall of the cylinder body 501, and fixed blocks 502 symmetrically arranged on the bottom of the cylinder body 501. The lower surface of each fixed block 502 is fixed with a plug rod 503, a plug hole matched with the plug rod 503 is formed in the fixed rod 3, and a rubber ring is sleeved on the plug rod 503. The piston sampling cylinder 504 is fixed with a fixed ring 505, a first spring 507 is connected between the fixed ring 505 and the top wall of the cylinder body 501, a piston rod 508 is arranged in the piston sampling cylinder 504, the bottom end of the piston rod 508 is provided with a piston, and a handle is arranged on the piston sampling cylinder 504. The plug rod 503 is inserted into the plug hole in the fixed rod 3, so that the cylinder body 501 can be fixed. The rubber ring is used to increase the stability. After one sampling is completed, the cylinder body 501 can be directly taken down to obtain the sample, and then a new cylinder body 501 is replaced, so that the next sampling can be quickly performed. The cylinder body 501 and the internal mechanism can be reused after being disinfected.

[0040] Referring to Figures 2 to 4 The driving mechanism comprises a first wedge-shaped block 7 fixed on the piston sampling cylinder 504, and a second wedge-shaped block 9 fixed on the top wall of the cooling box 6 through a stand column 8. The first wedge-shaped block 7 is in contact with the second wedge-shaped block 9. When sampling, the piston sampling cylinder 504 is pushed downward, and under the action of the first wedge-shaped block 7 and the second wedge-shaped block 9, the cooling box 6 automatically moves away from the sampling position.

[0041] Referring to Figures 3 to 8The top of the connecting column 11 is fixed with a disinfectant liquid box 14, a driving rod 15 is fixed between the disinfectant liquid box 14 and the stand column 8, a liquid outlet hose 16 is connected to the bottom wall of the disinfectant liquid box 14, a spraying pipe 17 is fixed inside the cooling box 6 close to the open end, a plurality of spray heads 18 are symmetrically arranged on the spraying pipe 17, one end of the liquid outlet hose 16 is communicated with the spraying pipe 17, a piston plate 1401 is arranged in the disinfectant liquid box 14, and a pressure valve is installed on the liquid outlet hose 16; the driving rod 15 comprises a cylinder 1501, an air outlet pipe 1505 is connected between the cylinder 1501 and the disinfectant liquid box 14, an air inlet pipe 1506 is further connected to the cylinder 1501, one-way valves are arranged on the air outlet pipe 1505 and the air inlet pipe 1506, a movable rod 1502 is movably arranged at one end of the cylinder 1501 away from the air outlet pipe 1505, one end of the movable rod 1502 is connected with the stand column 8, and a sealing push block 1503 is fixed at the other end of the movable rod 1502; a second spring 1504 is connected between the sealing push block 1503 and the inner wall of the cylinder 1501; in order to avoid bacterial infection, when the cooling box 6 moves, the stand column 8 pushes the movable rod 1502 and the sealing push block 1503 to move, so that the air in the cylinder 1501 is sent into the disinfectant liquid box 14 through the air outlet pipe 1505, the piston plate 1401 is pushed under the action of air pressure, so that the disinfectant liquid is squeezed out, the disinfectant liquid enters the spraying pipe 17 through the liquid outlet hose 16, and then is sprayed to the gauze through the spray heads 18, so that the used and unused gauze is disinfected.

[0042] Referring to Figure 1 and Figure 9 , the mounting frame 1 comprises a base 101, a vertical rod 102 is fixed on the base 101, a lifting rod 103 is movably arranged on the vertical rod 102, the spring telescopic rod 2 is fixed on the lifting rod 103, one end of the connecting rod 10 is fixedly connected with the lifting rod 103, and a plurality of pad blocks 104 are arranged between the lifting rod 103 and the base 101; by adjusting the number of pad blocks 104, the height of the lifting rod 103 can be adjusted, so that the height of the positioning ring 4 is adjusted, different parts of different people and patients are adapted, and the overall placing stability can be improved by increasing the suction cups at the bottom of the base 101.

[0043] A method for using a skin biopsy sampling device, comprising the following steps:

[0044] S1, winding gauze on the unwinding drum 603, the gauze is multi-layered, and an ice bag is placed in the cooling box 6, the ice bag is located at the opening 601, and one end of the gauze is connected to the winding drum 604 through the ice bag;

[0045] S2, place the mounting frame 1, adjust the height of the positioning ring 4, so that it is located around the skin to be sampled, the ice bag extends out of the opening 601, the ice bag cools and relieves pain to the sampling part through the gauze, and at this time the doctor performs other preparation work;

[0046] S3, after preparation is completed, the doctor first carries out microneedle anesthesia to the patient, then pushes down the piston sampling cylinder 504, under the action of the driving mechanism, the cooling box 6 is away from the sampling site, then the loop cutter 506 completes sampling, and the skin sample is sucked into the piston sampling cylinder 504 through negative pressure, and sampling is completed.

[0047] The working principle of the application is as follows: first, the overall height is adjusted by adjusting the number of gaskets 104 between the lifting rod 103 and the base 101 in the mounting frame 1, so that the positioning ring 4 at the bottom end of the fixed rod 3 is accurately aligned with the sampling site of the patient, the positioning ring 4 is attached to the skin of the patient and located around the sampling site, at the same time, the cylinder body 501 of the sampling mechanism 5 is inserted into the insertion hole of the fixed rod 3 through the insertion rod 503 of the bottom fixing block 502 to complete the fixation, the cooling box 6 is connected with the notch of the positioning ring 4 through the sliding groove 602, the ice bag placed in the box corresponds to the opening 601 position, and the multiple layers of gauze on the unwinding drum 603 are connected to the winding drum 604 after winding around the ice bag, forming an "ice bag-gauze" buffer layer to pre-cool the sampling site to reduce the sensitivity of nerve endings (synchronously facilitating the doctor to perform preoperative preparation and subsequent microneedle anesthesia);

[0048] When sampling, the doctor pushes the piston sampling cylinder 504 downward, a scale is added on the side wall of the piston sampling cylinder 504 to facilitate knowing the sampling depth, the first wedge block 7 on the piston sampling cylinder 504 is in contact with the second wedge block 9 on the top wall of the cooling box 6 and generates a horizontal thrust to drive the cooling box 6 to automatically move away from the sampling site, then the piston sampling cylinder 504 continues to move downward to make the loop cutter 506 cut into the skin and rotate appropriately, the piston rod 508 is pulled to generate negative pressure through the piston to suck the tissue sample into the piston sampling cylinder 504 (the first spring 507 between the fixed ring 505 and the top wall of the cylinder body 501 assists in resetting), the sampling process combines the dual-mode analgesic scheme of physical cooling and pre-anesthesia to effectively eliminate the pain in the cutting process and improve the comfort of the patient;

[0049] During the translation of the cooling box 6, the ratchets 605 on both sides of the winding drum 604 are engaged with the ratchets 13 on the fixed plate 12 (at this time, the fixed plate 12 is fixed), the winding drum 604 is driven to wind the used gauze, the unwinding drum 603 releases new gauze (when the cooling box 6 is reset, the ratchets 13 are deflected to avoid the gauze from returning), at the same time, the vertical column 8 pushes the movable rod 1502 of the driving rod 15, the sealing push block 1503 compresses the air in the cylinder 1501, and the air is sent into the disinfectant box 14 through the air outlet pipe 1505, the air pressure drives the piston plate 1401 to press the disinfectant into the spraying pipe 17 through the liquid outlet hose 16, and then the disinfectant is sprayed onto the gauze through the nozzle 18 to complete synchronous disinfection;

[0050] After sampling is completed, the piston sampling cylinder 504 is automatically reset under the action of the first spring 507, and the movable rod 1502 and the cooling box 6 are also automatically reset under the action of the second spring 1504. When the movable rod 1502 is reset, the external air enters the cylinder 1501 through the air inlet pipe 1506, facilitating subsequent use. Then, the sample in the piston sampling cylinder 504 can be taken out by pulling out the cylinder body 501, and the next sampling can be performed by replacing a new piston sampling cylinder 504, thereby significantly reducing the single-use cost and facilitating popularization.

[0051] The above describes one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application and cannot be considered as limiting the implementation range of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A skin biopsy sampling device, comprising two height-adjustable mounting brackets (1), each of the two mounting brackets (1) being equipped with a spring telescopic rod (2), one end of each spring telescopic rod (2) being fixed with an L-shaped fixing rod (3), and the bottom ends of the two fixing rods (3) being jointly fixed with a positioning ring (4), characterized in that, A sampling mechanism (5) is placed between the two fixed rods (3). A piston sampling cylinder (504) is movably mounted on the sampling mechanism (5). A ring cutter (506) is fixed at the bottom of the piston sampling cylinder (504). A scale is provided on the side wall of the piston sampling cylinder (504). The positioning ring (4) has a notch on one side. The cooling box (6) is slidably connected to the notch through the sliding grooves (602) on both sides. The bottom wall of the cooling box (6) has an opening (601) on one side. The side wall of the cooling box (6) has an open opening. A unwinding drum (603) and a winding drum (604) are installed at the open opening. Ratchets (605) are installed on both sides of the winding drum (604). Both mounting brackets (1) are fixed with L-shaped connecting rods (10), and one end of each of the two connecting rods (10) is fixed with a connecting post (11). A fixing plate (12) is fixed to one side of the connecting post (11), and one end of the fixing plate (12) extends into the opening of the cooling box (6). The upper surface of the fixing plate (12) is provided with ratchet teeth (13) that are compatible with the ratchet (605). A drive mechanism is provided between the cooling box (6) and the sampling mechanism (5). When the sampling mechanism (5) descends, it pushes the cooling box (6) to move horizontally; an ice pack is placed in the cooling box (6), the ice pack is located at the opening (601), and gauze is wrapped on the roll (603). The gauze is multi-layered, and one end of the gauze is wrapped around the ice pack and connected to the take-up roll (604). At this time, the gauze is located outside the ice pack. The mounting frame (1) is placed and the height is adjusted so that the positioning ring (4) is located at the patient's sampling point. The ice pack and gauze pre-cool the sampling point through the opening (601). During the movement of the cooling box (6), the winding drum (604) rotates under the action of the ratchet (605) and the ratchet (13), winding up the used gauze and moving the unused gauze to the outside of the ice pack.

2. The skin biopsy sampling device according to claim 1, characterized in that, The sampling mechanism (5) includes a cylindrical body (501) with an open bottom. The piston sampling cylinder (504) is movably disposed on the top wall of the cylindrical body (501). Fixed blocks (502) are symmetrically disposed at the bottom of the cylindrical body (501). An insertion rod (503) is fixed on the lower surface of the fixed block (502). An insertion hole matching the insertion rod (503) is opened on the fixed rod (3). A rubber ring is sleeved on the insertion rod (503).

3. The skin biopsy sampling device according to claim 2, characterized in that, A fixing ring (505) is fixed on the piston sampling cylinder (504), and a first spring (507) is connected between the fixing ring (505) and the top wall of the cylinder (501). A piston rod (508) is provided inside the piston sampling cylinder (504), and a piston is provided at the bottom end of the piston rod (508). A handle is provided on the piston sampling cylinder (504).

4. The skin biopsy sampling device according to claim 1, characterized in that, The drive mechanism includes a first wedge block (7) fixed on the piston sampling cylinder (504), and a second wedge block (9) fixed on the top wall of the cooling box (6) by a column (8), wherein the first wedge block (7) and the second wedge block (9) are in contact.

5. A skin biopsy sampling device according to claim 4, characterized in that, A disinfectant container (14) is fixed to the top of the connecting column (11). A drive rod (15) is fixed between the disinfectant container (14) and the column (8). A liquid outlet hose (16) is connected to the bottom wall of the disinfectant container (14). A spray pipe (17) is fixed to one end of the cooling box (6) near the opening. Multiple nozzles (18) are symmetrically arranged on the spray pipe (17). One end of the liquid outlet hose (16) is connected to the spray pipe (17). A piston plate (1401) is provided inside the disinfectant container (14). A pressure valve is installed on the liquid outlet hose (16).

6. A skin biopsy sampling device according to claim 5, characterized in that, The drive rod (15) includes a cylinder (1501), and an air outlet pipe (1505) is connected between the cylinder (1501) and the disinfectant box (14). An air inlet pipe (1506) is also connected to the cylinder (1501). A one-way valve is provided on both the air outlet pipe (1505) and the air inlet pipe (1506). A movable rod (1502) is movably provided at one end of the cylinder (1501) away from the air outlet pipe (1505). One end of the movable rod (1502) is connected to the column (8), and a sealing push block (1503) is fixed at the other end. A second spring (1504) is connected between the sealing push block (1503) and the inner wall of the cylinder (1501).

7. The skin biopsy sampling device according to claim 1, characterized in that, The mounting bracket (1) includes a base (101), a vertical rod (102) is fixed on the base (101), a lifting rod (103) is movably arranged on the vertical rod (102), a spring telescopic rod (2) is fixed on the lifting rod (103), one end of the connecting rod (10) is fixedly connected to the lifting rod (103), and a plurality of pads (104) are provided between the lifting rod (103) and the base (101).

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