Convenient gastroscope for biopsy sampling

Abstract

The portable biopsy sampling gastroscope provided by the present invention comprises a display mechanism and a scope tube connected to the display mechanism, wherein a mucus sampling mechanism is installed at one end of the scope tube away from the display mechanism; the mucus sampling mechanism comprises a limiting cylinder, a plurality of sampling pieces arranged along the circumferential direction of the limiting cylinder for sticking mucus, and a driving assembly for driving each sampling piece to move radially toward or away from the axis of the limiting cylinder, and each of the sampling pieces comprises a sampling plate and a plurality of sampling hairs arrayed on the sampling plate. The problem of long sampling time, difficult sampling and poor effect of the existing gastroenterology biopsy sampling device is solved, and medical personnel can conveniently complete the biopsy sampling of the patient's digestive tract in a shorter time, thereby improving the efficiency of biopsy sampling and improving the patient's medical experience.

Description

Technical Field

[0001] The invention relates to the field of internal medicine medical equipment, and in particular to a convenient biopsy sampling gastroscope. Background Art

[0002] With the development of modern internal medicine, in order to accurately know the patient's digestive tract diseases to facilitate the diagnosis of medical personnel, a gastroscope that can be inserted into the patient's esophagus, stomach, and duodenum for medical observation of lesions is often used. Its main structure is: including a display mechanism, a mirror tube connected to the display mechanism, and a monitor that is inserted into the human digestive tract and installed at the end of the mirror tube. The main operation method of the gastroscope is: taking the examination of the stomach as an example, the medical staff allows the patient to swallow the monitor from the mouth into the stomach, and the image information of the inner wall of the stomach taken by the monitor is fed back to the display mechanism, and the medical staff makes a judgment based on the image photos. In order to further obtain accurate information about the patient's stomach lesions, a rotating sampling spoon is installed at the end of the traditional mirror tube for biopsy sampling, but it is easy to cause the sampling spoon to rotate too much, the medical staff's hand tremors, etc., causing nausea or even pain in the patient, and multiple sampling is required, which makes the patient's medical experience extremely poor.

[0003] In order to alleviate the many problems mentioned above, as a prior art, for example, a biopsy sampler for gastroenterology is disclosed in the patent document with publication number: CN209826808U, whose main structure is: a diversion mechanism is set at the end of the gastroscope catheter (scope tube), and the mechanism mainly includes a diversion hole, a filter, a guide plate and a sampling bucket, etc. The working principle is: the medical staff makes the edge of the diversion mechanism close to the inner wall of the patient's esophagus, and allows the mucus secreted on the inner wall of the esophagus to penetrate through the diversion holes on the filter and flow into the guide plate. The accumulated mucus will flow into the sampling bucket due to the influence of gravity. When a certain amount of mucus is reached, the gastroscope catheter is pulled out, and then the sampling bucket is disassembled and taken out, and then it is disassembled to obtain the patient's digestive mucus sample.

[0004] The above device can alleviate the nausea, pain and other discomforts of patients when they visit the doctor to a certain extent, but it still has the following disadvantages: on the one hand, in order to obtain a certain amount of mucus sample, medical personnel need to allow the diversion mechanism to contact the inner wall of the patient's esophagus (inner wall of the digestive tract) multiple times to ensure that enough mucus flows through the filter to the diversion plate, which prolongs the patient's consultation time, makes the consultation efficiency not improved, and makes it difficult for medical personnel to waste a lot of consultation time; on the other hand, the mucus secreted by the inner wall of the human digestive tract has a certain viscosity, which is very easy to stick to the outer wall of the sampling device or block the filter, resulting in less mucus entering the guide plate, which reduces the sampling efficiency.

[0005] Therefore, it is necessary to improve the traditional sampling devices and the problems existing in the prior art to further improve the patient's medical experience. Summary of the invention

[0006] In view of the deficiencies in the prior art, the portable biopsy sampling gastroscope provided by the present invention solves the problems of long sampling time, difficult sampling and poor effect of existing gastroenterology biopsy sampling devices, and enables medical personnel to conveniently complete biopsy sampling of the patient's digestive tract in a shorter time, thereby improving the efficiency of biopsy sampling and enhancing the patient's medical experience.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A portable biopsy sampling gastroscope comprises a display mechanism and a scope tube connected to the display mechanism, wherein a mucus sampling mechanism is installed at one end of the scope tube away from the display mechanism; the mucus sampling mechanism comprises a limiting cylinder, a plurality of sampling pieces arranged along the circumferential direction of the limiting cylinder for sticking mucus, and a driving assembly for driving each sampling piece to move radially toward or away from the axis of the limiting cylinder, wherein each of the sampling pieces comprises a sampling plate and a plurality of sampling hairs arrayed on the sampling plate.

[0009] Furthermore, the limiting tube includes a limiting cap fixedly connected to the mirror tube, a bearing rod fixedly connected to the limiting cap, and a limiting seat fixedly connected to the bottom end of the bearing rod, wherein: the limiting cap, the bearing rod, and the limiting seat are on the same central axis.

[0010] Furthermore, the driving assembly includes a ring sleeve slidably mounted on the supporting rod, a plurality of supporting arms circumferentially distributed on the ring sleeve, and a driving body that drives the ring sleeve to move along the length direction of the supporting rod. One end of each supporting arm is hinged on the ring sleeve, and the other end is pivotally connected to a sampling plate.

[0011] Furthermore, the driving body includes an electromagnetic plate fixedly mounted on the bearing rod, an electromagnetic sleeve constructed on the ring sleeve and used in conjunction with the electromagnetic plate, and a compression spring mounted on the bearing rod; one end of the compression spring abuts against the electromagnetic plate, and the other end abuts against the ring sleeve.

[0012] Preferably, each of the support arms is hinged to the ring sleeve via a hinge unit; each of the hinge units comprises a hinge groove formed on the ring sleeve, a hinge hole formed on the support arm, and a connecting column passing through the hinge hole and fixed on the inner wall of the hinge groove.

[0013] Preferably, the mucus sampling mechanism also includes an auxiliary flow guide component; the auxiliary flow guide component includes a liquid collecting hopper detachably mounted on the bottom of the limit seat, a liquid pressure ring sleeved on the limit cylinder for squeezing the mucus on the sampling hair out, and a driving unit for driving the liquid pressure unit to reciprocate along the axial direction of the limit cylinder.

[0014] Preferably, the cross-section of the liquid pressure ring is an annular structure that is larger at the top and smaller at the bottom, and a plurality of roller pressing wheels are circumferentially arranged on the inner side wall of the liquid pressure ring.

[0015] Furthermore, the driving unit includes a pull rod that is movably arranged in sequence in the mirror tube, the limit cap, the bearing rod, and the limit seat, and one end of the pull rod passes through the mirror tube and is connected to a pull ring, and the other end of the pull rod abuts against the inner bottom wall of the limit seat through a reset spring; a plurality of support rods are fixed between the inner side wall of the pressure liquid ring and the pull rod; and slots for the support rods to pass through are provided in sequence in the limit seat, the support rod, and the sampling plate.

[0016] Furthermore, the liquid collecting hopper is detachably mounted on the bottom of the limiting seat via a clamping piece; the clamping piece includes a "T"-shaped clamping pin fixed on the inner wall of the liquid collecting hopper and a pin hole constructed on the limiting seat and for the clamping pin to engage.

[0017] Preferably, the mucus sampling mechanism further includes a pumping unit; the pumping unit includes a liquid storage tank mounted on the display mechanism and a pump tube for pumping the mucus in the liquid collecting bucket into the liquid storage tank.

[0018] The principle of the technical solution is: through the mucus sampling mechanism installed at the end of the end tube, a plurality of sampling pieces that move toward or away from the axis of the limit tube are arranged on the limit tube, and the structure of each sampling piece is a sampling plate and sampling hairs distributed in an array on the sampling plate. The medical staff guides the endoscope tube into the patient's digestive tract to a certain position, so that the sampling plate contacts the digestive mucus secreted by the inner wall of the patient's digestive tract, and the mucus adheres to the sampling hairs by its own tension, thereby completing the sampling process.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Compared with the existing sampling device, the present invention controls each sampling plate to move toward or away from the axis of the limiting cylinder at the same time through the driving component, so that the circumferential contour of the sampling plate can be scaled, so that the sampling hairs on the sampling plate can fit the inner wall of the patient's digestive tract, and the secreted mucus can rely on the tension between the sampling hairs to adhere to the sampling plate to the maximum extent. The problems of low efficiency and long sampling time of using filter mesh sampling in the existing technology are eliminated, which greatly reduces the time for medical staff to perform biopsy sampling on patients, reduces the pain of gastroscopy examination for patients, and improves the patient's medical experience.

[0021] The following are other beneficial effects of this technical solution:

[0022] 1. The driving body controls the sliding of the ring sleeve on the bearing rod, so that the angle formed between the support arm and the bearing rod is adjusted, and the support arm is driven to control the sampling plate to approach or move away from the bearing rod, making the synchronous diameter change control of each sampling plate more convenient.

[0023] 2. Through the auxiliary guide component, the mucus adhered to each sampling plate can be pressed out and guided into the liquid collecting hopper along the outer wall of the limit seat with its own gravity, thereby improving the sampling efficiency.

[0024] 3. The pumping unit is set up to allow mucus to be transported from the digestive tract to the outside of the patient's digestive tract, so as to facilitate medical examination, observation and diagnosis by medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the overall structure of a biopsy sampling gastroscope in an embodiment of the present invention.

[0026] Figure 2 Schematic diagram of the overall structure of the mucus sampling mechanism in an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the internal structure of the mucus sampling mechanism in an embodiment of the present invention.

[0028] Figure 4 for Figure 3 Enlarged schematic diagram at A.

[0029] Figure 5 It is a schematic diagram of the overall structure of the bearing column and the limiting seat in an embodiment of the present invention.

[0030] Figure 6 Schematic diagram of the overall structure of a single sampling piece in an embodiment of the present invention.

[0031] Figure 7 Schematic diagram of the installation position of the pumping assembly in another embodiment of the present invention.

[0032] Reference numerals:

[0033] 1. Mirror tube; 10. Through hole; 11. Notch; 2. Display mechanism; 21. Knob group; 3. Monitoring mechanism; 31. Monitoring disk; 32. Micro lens; 4. Limiting tube; 41. Limiting cap; 42. Limiting seat; 43. Bearing rod; 44. Pin hole; 47. Liquid collecting bucket; 48. Pin; 6. Sampling piece; 61. Sampling plate; 62. Sampling hair; 7. Ring sleeve; 70. Articulated groove; 71. Electromagnetic plate; 72. Electromagnetic sleeve; 73. Compression spring; 75. Support arm; 76. Connecting column; 77. Fixed column; 8. Liquid pressure ring; 81. Support rod; 83. Support arm; 84. Roller wheel; 9. Pull rod; 91. Reset spring; 93. Pull ring; 94. Pump tube; 95. Liquid storage tank. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Reference Figure 1 and Figure 2 As shown, the portable biopsy sampling gastroscope proposed in an embodiment of the present invention comprises a display mechanism 2, a mirror tube 1 connected to the display mechanism 2, and a monitoring mechanism 3 fixed at one end of the mirror tube 1 extending into the patient's digestive tract. The monitoring mechanism 3 comprises a monitoring disk 31 sleeved on the outer wall of the mirror tube 1, and a plurality of micro lenses 32 facing the end of the mirror tube 1 are installed on the monitoring disk 31. The number of the micro lenses 32 in this embodiment is 4, and they are evenly distributed around the monitoring disk 31. Each micro lens 32 transmits the captured image to the display mechanism 2 for medical staff to view at any time. The display mechanism 2 is an electronic microscope display unit or an ordinary display. In this embodiment, the display mechanism 2 is configured as an ordinary display; a mucus sampling mechanism is installed at one end of the mirror tube 1 away from the display mechanism 2. The mucus sampling mechanism is arranged within the monitoring range of the monitoring mechanism 3, and in this embodiment, it is directly below the monitoring disk 31, so that medical staff can adjust the position and posture of the mucus sampling mechanism at any time to better sample. The following is the specific structure and implementation principle of the mucus sampling mechanism:

[0036] Reference Figure 1 , Figure 2 and Figure 3As shown, the mucus sampling mechanism includes a limiting cylinder 4, a plurality of sampling pieces 6 for sticking mucus arranged along the circumferential direction of the limiting cylinder 4, and a driving assembly for driving each sampling piece 6 to move toward or away from the axis of the limiting cylinder 4, each of the sampling pieces 6 includes a sampling plate 61 and a plurality of sampling hairs 62 distributed in an array on the sampling plate 61, the limiting cylinder 4 includes a limiting cap 41 fixedly connected to the mirror tube 1, a bearing rod 43 fixedly connected to the limiting cap 41, and a limiting seat 42 fixedly connected to the bottom end of the bearing rod 43, wherein: the limiting cap 41, the bearing rod 43, and the limiting seat 42 are on the same central axis. It should be noted that the limiting cap 41 and the limiting seat 42 are fixedly connected by the bearing rod 43. In this embodiment, each sampling plate 61 is located within the space gap formed between the limiting cap 41 and the limiting seat 42, and the cross section of each sampling plate 61 is arc-shaped. Multiple sampling plates 61 are arranged in a circle along the circumferential direction of the limiting cylinder 4 to form a ring-shaped sampling area, which is conducive to sampling within a 360-degree range when the mucus sampling mechanism is in the patient's digestive tract. In this embodiment, the sampling plates 61 are configured as 4, and under the operation of the driving component, each sampling plate 61 forms a space gap between the limiting cap 41 and the limiting seat 42 and moves toward or away from the radial direction of the bearing rod 43. In this embodiment, the material of the sampling hair 62 is medical degreased facial hair, and the length used is 0.1-0.5mm, which is conducive to the adhesion of mucus. The following is the structure and principle of the driving component:

[0037] Refer to 4 and Figure 3As shown in the figure, as another embodiment of the present invention, the driving assembly includes a ring sleeve 7 slidably sleeved on the bearing rod 43, a plurality of support arms 75 circumferentially distributed on the ring sleeve 7, and a driving body driving the ring sleeve 7 to move along the length direction of the bearing rod 43, one end of each support arm 75 is hinged on the ring sleeve 7, and the other end is correspondingly pivoted to a sampling plate 61. In this embodiment, each of the support arms 75 is hinged to the ring sleeve 7 through a hinge unit; each of the hinge units includes a hinge groove 70 provided on the ring sleeve 7, a hinge hole (not shown in the figure) constructed on the support arm 75, and a connecting column 76 passing through the hinge hole and fixed on the inner wall of the hinge groove 70. The other end of the support arm 75 is provided with a pivot hole (not shown in the figure), and a fixing column 77 fixed on the sampling plate 61 and plugged into the pivot hole, so as to realize the pivot connection between the ring sleeve 7 and each sampling plate 61 through the support arm 75. When the ring sleeve 7 slides on the load-bearing rod 43, the angle formed by the support arm 75 and the load-bearing rod 43 will be changed. When the degree of the angle gradually decreases, each sampling plate 61 moves radially toward the axis of the load-bearing rod 43, and the contour of the circular ring surrounded by all the sampling plates 61 gradually shrinks. When the support arm 75 and the load-bearing rod 43 are parallel to each other (the angle is 0 degrees), the sampling plate 61 is completely retracted in the limiting tube 4, and the sampling hairs 62 on each sampling plate 61 are also The sampling plates 61 are contracted in the limiting tube 4 (the edge of the sampling hair 62 is located on the inner side of the outer wall contour of the limiting cap 41); when the degree of the angle gradually increases, each sampling plate 61 moves away from the axis of the load-bearing rod 43. At this time, the circular contours of all the sampling plates 61 gradually expand under the action of the support arm 75. When the angle formed between the support arm 75 and the load-bearing rod 43 reaches a right angle, the distance between the sampling plate 61 and the load-bearing rod 43 reaches a maximum value. At this time, the radius of the outer circular arc contour of all the sampling plates 61 reaches a maximum. Therefore, the function of the driving body is to synchronously adjust the horizontal distance between the sampling plate 61 and the load-bearing rod 43, so that all the sampling plates 61 can operate with variable diameters.

[0038] Reference Figure 4 , Figure 3 as well as Figure 2As shown, as other embodiments of the present invention, in this embodiment, a structure of a driving body is provided, which includes an electromagnetic plate 71 fixedly mounted on the supporting rod 43, an electromagnetic sleeve 72 constructed on the ring sleeve 7 and used in conjunction with the electromagnetic plate 71, and a compression spring 73 mounted on the supporting rod 43; one end of the compression spring 73 abuts against the electromagnetic plate 71, and the other end abuts against the ring sleeve 7. In this embodiment, a mutually repulsive force is generated between the electromagnetic plate 71 and the electromagnetic sleeve 72 after power is turned on. Due to the presence of the compression spring 73, the compression spring 73 causes the annular sleeve 7 and the electromagnetic plate 71 to approach each other, so that the support arm 75 and the bearing rod 43 are parallel to each other. When the current between the electromagnetic plate 71 and the electromagnetic sleeve 72 is gradually increased, the repulsive force gradually increases, thereby gradually overcoming the elastic force of the compression spring 73 to drive the annular sleeve 7 away from the electromagnetic plate 71 and slide on the bearing rod 43, thereby gradually increasing the angle formed between the support arm 75 and the bearing rod 43, and allowing each sampling plate 61 to gradually move away from the axis of the bearing rod 43 (limiting tube 4), so that the sampling hairs 62 on the sampling plate 61 are close to the mucus on the inner wall of the digestive tract, which is conducive to adhesion sampling. In this embodiment, Figure 1 The electromagnetic plate 71 and the electromagnetic sleeve 72 are connected to the knob group 21 of the display mechanism 2 (ordinary display) by telecommunication. The medical staff can control the current between the electromagnetic plate 71 and the electromagnetic sleeve 72 through the knob group 21 to achieve the strength of the repulsive force so as to adjust the diameter of each sampling plate 61. Taking esophageal mucus sampling as an example, when using it, the medical staff can let the patient swallow the mucus sampling mechanism into the esophagus, then turn on the display mechanism 2 (ordinary display), let the micro lens 32 take pictures, and observe the amount of mucus secreted on the inner wall of the esophagus. When sampling is required, the knob group 21 is manually twisted to control the sampling member 6 to stick the mucus on the inner wall of the esophagus for sampling.

[0039] Reference Figure 3As shown in the figure, as another embodiment of the present invention, the mucus sampling mechanism further includes an auxiliary flow guide assembly; the auxiliary flow guide assembly includes a liquid collecting hopper 47 detachably mounted at the bottom of the limiting seat 42, a liquid pressure ring 8 sleeved on the limiting cylinder 4 for squeezing the mucus on the sampling hair 62 out, and a driving unit for driving the liquid pressure unit to reciprocate along the axial direction of the limiting cylinder 4. The cross section of the liquid pressure ring 8 is an annular structure with a larger upper portion and a smaller lower portion, and a plurality of rollers 84 are circumferentially arranged on the inner side wall of the liquid pressure ring 8. Each roller 84 is rotatably connected to the inner wall of the liquid pressure ring 8, and its specific structure is: a support arm 83 fixed on the inner wall of the liquid pressure ring 8 and a roller 84 rotatably connected to the support arm 83. When the driving unit reciprocates the liquid pressure ring 8 along the axial direction of the limiting cylinder 4, the inner wall of the liquid pressure ring 8 will produce an extrusion force with the mucus attached to the sampling hairs 62 on each sampling plate 61, so that the mucus distributed on the sampling plate 61 is collected and gradually flows down along the outer wall of the limiting seat 42 under the action of its own gravity to the liquid collecting bucket 47 for temporary storage. The function of each roller 84 is to roll and squeeze the sampling hairs 62, so that the mucus attached to the inner side of each sampling hair 62 is squeezed out and flows down along the outer wall of the limiting seat 42. The following is the structure and principle of the driving unit:

[0040] Reference Figure 3 , Figure 5 as well as Figure 6 As shown in the figure, as another embodiment of the present invention, the driving unit includes a pull rod 9 which is movably arranged in sequence in the mirror tube 1, the limit cap 41, the bearing rod 43 and the limit seat 42. It should be noted that the mirror tube 1, the limit cap 41, the bearing rod 43 and the limit seat 42 are all provided with through holes 10 which are interconnected, and one end of the pull rod 9 passes through the mirror tube 1 and is connected with a pull ring 93 for medical personnel to pull, and the other end of the pull rod 9 is in contact with the inner bottom wall of the limit seat 42 through a reset spring 91; a plurality of support rods 81 fixed between the inner side wall of the pressure liquid ring 8 and the pull rod 9; and a plurality of support rods 81 which are arranged in sequence in the openings. The slots 11 for the support rod 81 to pass through are arranged on the limit seat 42, the support rod 81 and the sampling plate 61, wherein: the slots 11 on the limit seat 42 are opened from top to bottom, and each slot 11 is for a support rod 81 to pass through, and the height of the slots 11 is greater than the axial length of the liquid pressure ring 8. The medical staff overcomes the elastic force of the reset spring 91 through the pull ring 93, so that the support rod 81 moves in the height direction of each slot 11, thereby driving the mutual extrusion between the liquid pressure ring 8 and the sampling hair 62, so that the mucus is squeezed out, and the reset spring 91 serves to reset the pull rod 9.

[0041] Reference Figure 3 and Figure 5As shown, as other embodiments of the present invention, the liquid collecting bucket 47 is detachably mounted on the bottom of the limiting seat 42 through a clamping piece; the clamping piece includes a "T"-shaped clamping pin 48 fixed on the inner wall of the liquid collecting bucket 47 and a pin hole 44 constructed on the limiting seat 42 and for the clamping pin 48 to be clamped, so that personnel can disassemble and clean the liquid collecting bucket 47 and medical personnel can take out samples.

[0042] Reference Figure 1 and Figure 7 As shown, as other embodiments of the present invention, the mucus sampling mechanism also includes a pumping unit; the pumping unit includes a liquid storage tank 95 installed on the display mechanism 2 and a pump tube 94 for pumping the mucus in the liquid collecting bucket 47 into the liquid storage tank 95, so as to enable the mucus to be transported from the digestive tract to the outside of the patient's digestive tract, so as to facilitate medical examinations and observation and diagnosis by medical personnel.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A portable gastroscope for biopsy sampling, comprising a display mechanism (2) and a scope tube (1) connected to the display mechanism (2), characterized in that: A mucus sampling mechanism is installed at one end of the mirror tube (1) facing away from the display mechanism (2); The mucus sampling mechanism comprises a limiting cylinder (4), a plurality of sampling pieces (6) arranged along the circumferential direction of the limiting cylinder (4) for sticking mucus, and a driving assembly for driving each sampling piece (6) to move radially toward or away from the axis of the limiting cylinder (4), wherein: Each of the sampling members (6) comprises a sampling plate (61) and a plurality of sampling hairs (62) distributed in an array on the sampling plate (61); The limiting cylinder (4) comprises a limiting cap (41) fixedly connected to the mirror tube (1), a bearing rod (43) fixedly connected to the limiting cap (41), and a limiting seat (42) fixedly connected to the bottom end of the bearing rod (43), wherein: The limiting cap (41), the bearing rod (43), and the limiting seat (42) are located on the same central axis; The mucus sampling mechanism also includes an auxiliary flow guide component; The auxiliary flow guide assembly comprises a liquid collecting hopper (47) detachably mounted on the bottom of the limiting seat (42), a liquid pressure ring (8) sleeved on the limiting cylinder (4) for squeezing out the sticky liquid on the sampling hair (62), and a driving unit for driving the liquid pressure unit to reciprocate along the axial direction of the limiting cylinder (4); The driving assembly comprises a ring sleeve (7) slidably mounted on the bearing rod (43), a plurality of support arms (75) circumferentially distributed on the ring sleeve (7), and a driving body driving the ring sleeve (7) to move along the length direction of the bearing rod (43), wherein: One end of each support arm (75) is hinged to the ring sleeve (7), and the other end is pivotally connected to a corresponding sampling plate (61).

2. The portable biopsy sampling gastroscope according to claim 1, characterized in that: The driving body comprises an electromagnetic plate (71) fixedly sleeved on the bearing rod (43), an electromagnetic sleeve (72) constructed on the ring sleeve (7) and used in conjunction with the electromagnetic plate (71), and a compression spring (73) sleeved on the bearing rod (43); One end of the compression spring (73) abuts against the electromagnetic plate (71), and the other end abuts against the ring sleeve (7).

3. The portable biopsy sampling gastroscope according to claim 2, characterized in that: Each of the support arms (75) is hingedly connected to the ring sleeve (7) via a hinge unit; Each of the hinge units comprises a hinge groove (70) formed on the ring sleeve (7), a hinge hole formed on the support arm (75), and a connecting column (76) passing through the hinge hole and fixed on the inner wall of the hinge groove (70).

4. The portable biopsy sampling gastroscope according to claim 1, characterized in that: The cross-section of the liquid pressure ring (8) is an annular structure that is larger at the top and smaller at the bottom, and a plurality of roller pressing wheels (84) are circumferentially arranged on the inner side wall of the liquid pressure ring (8).

5. The portable biopsy sampling gastroscope according to claim 4, characterized in that: The driving unit comprises A pull rod (9) is movably arranged in the mirror tube (1), the limit cap (41), the bearing rod (43), and the limit seat (42) in sequence, and one end of the pull rod (9) passes through the mirror tube (1) and is connected to a pull ring (93), and the other end of the pull rod (9) abuts against the inner bottom wall of the limit seat (42) via a return spring (91); A plurality of upper support rods (81) fixed between the inner side wall of the liquid pressure ring (8) and the pull rod (9); and A slot (11) for the support rod (81) to pass through is provided on the limiting seat (42), the support rod (81), and the sampling plate (61) in sequence.

6. The portable biopsy sampling gastroscope according to claim 4 or 5, characterized in that: The liquid collecting hopper (47) is detachably mounted on the bottom of the limiting seat (42) via a clamping piece; The clamping member comprises a T-shaped clamping pin (48) fixed on the inner wall of the liquid collecting bucket (47) and a pin hole (44) constructed on the limiting seat (42) and for clamping the clamping pin (48).

7. The portable biopsy sampling gastroscope according to claim 4 or 5, characterized in that: The mucus sampling mechanism also includes a pumping unit; The pumping unit comprises a liquid storage tank (95) mounted on the display mechanism (2) and a pump tube (94) for pumping the mucus in the liquid collecting bucket (47) into the liquid storage tank (95).

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