A diagnostic sampling device for clinical use in gastroenterology

Abstract

The present invention discloses a clinical diagnostic sampling device for gastroenterology, comprising: an inner tube, an outer tube is arranged on the outer side of the inner tube, an airway through which air flows is arranged between the outer tube and the inner tube; a sampling mechanism, the sampling mechanism is installed on the outer side of the outer tube, the sampling mechanism is connected with the outer tube, the sampling mechanism is inflated and then expands and scrapes in the esophagus, so that esophageal exfoliated cells are collected; an inflation mechanism, the inflation mechanism is installed at the ends of the inner tube and the outer tube, the inflation mechanism flushes gas into the sampling mechanism; a stage adjustment mechanism, the stage adjustment mechanism is installed between the outer tube and the inner tube. The present invention can use a single airbag to take samples in different stages at different positions of the patient's esophagus, so as to facilitate the determination of the specific position of the lesion. On the premise that the inflation mechanism keeps the airbag inflated, the friction resistance with the inner wall of the patient's esophagus is reduced, the possibility of damage to the patient's esophageal mucosa is reduced, and the patient can take samples more comfortably.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a clinical diagnostic sampling device for gastroenterology. Background Art

[0002] Gastroenterology is a clinical tertiary discipline that mainly studies diseases of the esophagus, stomach, small intestine, large intestine, liver, gallbladder and pancreas. Gastroenterology has a wide variety of diseases, a wide range of medical knowledge, and complex and delicate operations.

[0003] During diagnosis, the Department of Gastroenterology needs to take samples of the patient's blood, urine, feces or tissue cells for testing and analysis to determine the location and cause of the patient's lesions. When sampling the patient's esophageal exfoliated cells, the cytological examination method of pulling the net is usually used to sample the patient's esophageal cells. That is, a 65 cm long and 0.25 cm diameter double-lumen gum tube (with a net balloon attached to the top) is slowly inserted into the stomach from the mouth, inflated with 20 to 30 ml of air (depending on the patient's condition), and slowly pulled outwards, adjusting the inflation volume at any time to allow the net to pass through and fully After the mesh bag is rubbed against the esophageal wall and taken out, the scraped material on the surface of the mesh bag is smeared, fixed and stained, and then it can be observed under an optical microscope. However, during the friction of the mesh bag in the esophagus, the movement range is large, and only the approximate area of ​​the lesion can be roughly determined. Repeated inspections are required to determine the specific location of the lesion. The operation process is relatively cumbersome and inconvenient for doctors. Repeated friction of the patient's esophagus may cause damage to the patient's esophageal mucosa, and the patient is quite uncomfortable. For this reason, we propose a diagnostic sampling device for clinical use in gastroenterology. Summary of the invention

[0004] The object of the present invention is to provide a diagnostic sampling device for clinical use in gastroenterology to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a diagnostic sampling device for clinical use in gastroenterology, comprising:

[0006] An inner tube, an outer tube is disposed on the outer side of the inner tube, and an airway for airflow to pass through is disposed between the outer tube and the inner tube;

[0007] A sampling mechanism, wherein the sampling mechanism is installed outside the outer tube, the sampling mechanism is connected to the outer tube, and the sampling mechanism is inflated and expanded to scrape the esophagus, so that esophageal exfoliated cells are collected;

[0008] An inflation mechanism, which is installed at the ends of the inner tube and the outer tube, and which injects gas into the sampling mechanism;

[0009] The stage adjustment mechanism is installed between the outer tube and the inner tube. When the sampling mechanism takes samples, the stage adjustment mechanism enables the sampling mechanism to take samples from different positions of the esophagus respectively.

[0010] Preferably, the sampling mechanism includes an airbag installed on one side of the outer tube, the airbag is connected to the inside of the airway, and a plurality of scraping rings for scraping the patient's esophagus are provided on the top of the airbag, and a sealing ring for closing the scraping ring after scraping is provided on one side of each scraping ring, and the sealing ring and the scraping ring are fixedly connected to the airbag.

[0011] Preferably, the stage adjustment mechanism includes a push ring installed on the outside of the outer tube, one side of the push ring is located on the outside of the airbag, a pull rope is provided inside the inner tube, one end of the pull rope is fixedly connected to the push ring, the pull rope passes through the inner tube and extends to the outside of the inner tube, a plurality of partition plates for separating the airbags are provided inside the airbag, each of the partition plates is provided with a compression plate for transmitting gas, a plurality of air holes are provided on the surface of the outer tube, a partition plate is provided on the outer tube between each air hole, a connecting hole is provided in the outer tube, and a sealing plate for sealing the connecting hole is provided on one side of the connecting hole.

[0012] Preferably, the partition plate and the pressing plate are connected via a connecting rod, the pressing plate and the partition plate fit tightly together, and the partition plate is located on the inner wall of the inner tube.

[0013] Preferably, the inflation mechanism includes a sleeve installed at one end of the outer tube, one side of the sleeve is provided with an air pipe connected to an external air pressure pump, one side of the sleeve is provided with a connecting tube, the interior of the connecting tube is slidably connected with a piston, the end of the piston is provided with a piston rod passing through the connecting tube, and a spring is provided between the connecting tube and the piston.

[0014] Preferably, a metal disk is provided on the top of the piston rod, and a metal ring is provided on the top of the connecting tube, and the metal disk and the metal ring are electrically connected to an external inflation device.

[0015] Preferably, the scraping ring is inclined toward the handheld end of the medical staff, the outer diameter of the sealing ring is smaller than the inner diameter of the scraping ring, and the cross section of the sealing ring is inclined.

[0016] Preferably, a reeling mechanism for reeling in the pull rope and pulling the sampling mechanism out of the esophagus is provided on the outside of the outer tube, and the reeling mechanism comprises a frame for medical personnel to hold by hand, and a reeling drum is provided inside the frame, and the reeling drum winds the pull rope.

[0017] Preferably, a connecting rope is provided on one side of the outer tube, and the winding drum includes a winding portion 1 for winding the pull rope, and two winding portions 2 for winding the connecting rope are provided on both sides of the winding portion 1, and the outer diameter of the winding portion 2 is twice the outer diameter of the winding portion 1.

[0018] The present invention has at least the following beneficial effects:

[0019] The sampling mechanism is used to scrape the surface of the esophagus and sample the exfoliated cells, the inflation mechanism is used to deflate or inflate the airbag when it expands or shrinks, and the stage adjustment mechanism is used to sample different positions of the esophagus using the airbag. The sampling is corresponding. Compared with the prior art, the mesh bag has a large movement range during the friction in the esophagus, and can only roughly determine the approximate area of ​​the lesion. Repeated inspections are required to determine the specific location of the lesion. The operation process is relatively cumbersome and inconvenient for the doctor. Repeated friction of the patient's esophagus may cause damage to the patient's esophageal mucosa, which makes the patient uncomfortable. The present invention can use a single airbag to sample in different stages at different positions of the patient's esophagus, which is convenient for determining the specific location of the lesion. The inflation mechanism reduces the friction resistance with the inner wall of the patient's esophagus and the possibility of damage to the patient's esophageal mucosa under the premise of keeping the airbag inflated, so that the patient can take samples more comfortably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention;

[0022] Figure 3 It is the structural diagram of the sampling mechanism of the present invention;

[0023] Figure 4 It is a partial cross-sectional view of the sampling mechanism of the present invention;

[0024] Figure 5 It is a partial cross-sectional view of the outer tube of the present invention;

[0025] Figure 6 It is a partial cross-sectional view of the inner tube of the present invention;

[0026] Figure 7 It is a partial exploded view of the inflation mechanism of the present invention;

[0027] Figure 8 It is a structural diagram of the inflation mechanism and the winding mechanism of the present invention;

[0028] Fig. 9 The figure is a motion diagram of the air bag and the push ring of the present invention.

[0029] In the figure: 1-inner tube; 2-outer tube; 3-sampling mechanism; 31-air bag; 32-scraping ring; 33-sealing ring; 4-inflating mechanism; 41-sleeve; 42-trachea; 43-connecting tube; 44-piston; 45-piston rod; 46-metal disc; 47-metal ring; 5-stage adjustment mechanism; 51-pushing ring; 52-pull rope; 53-partition plate; 54-pressing plate; 55-partition plate; 56-sealing plate; 57-connecting rod; 6-winding mechanism; 61-frame; 62-winding drum; 621-winding section one; 622-winding section two; 63-connecting rope. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-9 The present invention provides a technical solution: a diagnostic sampling device for clinical use in gastroenterology, comprising:

[0032] An inner tube 1, an outer tube 2 is arranged outside the inner tube 1, an airway for airflow is arranged between the outer tube 2 and the inner tube 1, the outer tube 2 is fixedly connected to the inner tube 1, and both the outer tube 2 and the inner tube 1 are inserted into the esophagus of the patient;

[0033] A sampling mechanism 3, wherein the sampling mechanism 3 is installed outside the outer tube 2, and the sampling mechanism 3 is connected to the outer tube 2. The sampling mechanism 3 is inflated and then expanded to scrape the esophagus, so that the esophageal exfoliated cells are collected. When the sampling mechanism 3 scrapes the patient's esophagus, the exfoliated cells at different positions of the patient's esophagus are collected and stored separately, thereby reducing the possibility of mixing the exfoliated cells at different positions of the esophagus, and thus it is more convenient to more accurately determine the patient's lesion location after testing, so as to facilitate subsequent treatment;

[0034] The inflation mechanism 4 is installed at the ends of the inner tube 1 and the outer tube 2. The inflation mechanism 4 flushes gas into the sampling mechanism 3. The inflation mechanism 4 inflates the airway between the inner tube 1 and the outer tube 2, flushes gas into the sampling mechanism 3, and then the sampling mechanism 3 expands and presses against the esophagus. The inflation mechanism 4 is convenient for providing a relatively stable air pressure, which is convenient for the sampling mechanism 3 to scrape the patient's esophagus. Moreover, the inflation mechanism 4 can automatically adjust the expansion degree of the sampling mechanism 3 according to the squeezing force between the sampling mechanism 3 and the esophagus, release part of the gas when the esophagus is relatively narrow, and flush part of the gas when the esophagus is relatively wide;

[0035] The stage adjustment mechanism 5 is installed between the outer tube 2 and the inner tube 1. When the sampling mechanism 3 is sampling, the stage adjustment mechanism 5 enables the sampling mechanism 3 to sample different positions of the esophagus respectively. After the sampling mechanism 3 is inflated, when the sampling mechanism 3 is pulled, the stage adjustment mechanism 5 ensures that different positions of the sampling mechanism 3 sample different positions of the esophagus respectively, and samples are taken at various positions of the esophagus more accurately, which can facilitate medical staff to determine the location of the lesion and facilitate subsequent treatment.

[0036] The sampling mechanism 3 includes an airbag 31 installed on one side of the outer tube 2, both ends of the airbag 31 are fixedly connected to the outer tube 2, the airbag 31 is communicated with the inside of the airway, a plurality of scraping rings 32 for scraping the patient's esophagus are provided on the top of the airbag 31, and a sealing ring 33 for closing the scraping ring 32 after scraping is provided on one side of each of the scraping rings 32, the sealing ring 33 and the scraping ring 32 are fixedly connected to the airbag 31, the sealing ring 33 and the scraping ring 32 are respectively integrally formed with the airbag 31, the scraping ring 32 is inclined toward the handheld end of the medical staff, the outer diameter of the sealing ring 33 is smaller than the inner diameter of the scraping ring 32, and the cross-section of the sealing ring 33 is inclined. When gas is injected into the airbag 31, the airbag 31 expands in the patient's esophagus. When the airbag 31 is pulled to move, different scraping rings 32 scrape different positions of the esophagus to collect the cells that fall off after scraping. After collection, the sealing ring 33 is flipped to seal the scraping ring 32 to reduce the cell contamination of the collection position by the rest of the esophagus. Therefore, the location of the esophageal lesion can be determined more accurately, making it convenient for medical staff to carry out subsequent treatment.

[0037] The stage adjustment mechanism 5 includes a push ring 51 installed on the outside of the outer tube 2. The push ring 51 is sleeved on the outside of the outer tube 2. The push ring 51 will fit the surface of the airbag 31 when moving. One side of the push ring 51 is located on the outside of the airbag 31. A pull rope 52 is provided inside the inner tube 1. One end of the pull rope 52 is fixedly connected to the push ring 51. The pull rope 52 passes through the inner tube 1 and extends to the outside of the inner tube 1. A plurality of partition plates 53 are provided inside the airbag 31 to separate the airbag 31. The partition plates 53 are fixedly connected to the airbag 31. The partition plates 53 are elastic plates. Each of the partition plates 5 3 are provided with a compression plate 54 for transmitting gas, the compression plate 54 is an elastic plate, and part of the compression plate 54 is fixed on the partition plate 53. The surface of the outer tube 2 is provided with a plurality of air holes, and the outer tube 2 is provided with a partition plate 55 between each air hole, the partition plate 55 is fixedly connected to part of the outer tube 2, and the partition plate 55 can be turned over relative to the inner wall of the outer tube 2. A connecting hole is provided in the outer tube 2, and a sealing plate 56 for sealing the connecting hole is provided on one side of the connecting hole. The sealing plate 56 is fixedly connected to the outer tube 2, and the sealing plate 56 is an elastic plate. After the sealing plate 56 is pressed by the push ring 51, the sealing plate 56 will seal the connecting hole.

[0038] The partition plate 55 is connected to the pressing plate 54 via a connecting rod 57 , and both ends of the connecting rod 57 are fixedly connected to the pressing plate 54 and the partition plate 55 respectively. The pressing plate 54 is tightly fitted to the partition plate 53 , and the partition plate 55 is located on the inner wall of the inner tube 1 .

[0039] After the medical staff inserts the outer tube 2, the inner tube 1 and the sampling mechanism 3 into the patient's esophagus, the inflation mechanism 4 first inflates the airways of the outer tube 2 and the inner tube 1, and the gas directly enters the airbag 31 on one side of the sealing plate 56 through the connecting hole. At this time, the gas partially expands the airbag 31, pulling the outer tube 2 and the pull rope 52, and the outer tube 2 and the pull rope 52 move synchronously outside the body. At this time, the pull rope 52 pulls the push ring 51 to move on the surface of the airbag 31. After the scraping ring 32 scrapes the esophageal cells, the push ring 51 pushes the sealing ring 33 to rotate, and the sealing ring 33 is sealed. After rotating, the sealing ring 33 covers the scraping ring 32 to seal the exfoliated cells scraped from the esophagus. After the pushing ring 51 moves to the sealing plate 56 position, the pushing ring 51 pushes the sealing plate 56 to rotate, and the sealing plate 56 is inserted into the connecting hole to seal the connecting hole. The pushing ring 51 squeezes the gas of the airbag 31 into the position of the clamping plate 54. The clamping plate 54 opens under the action of air pressure. The clamping plate 54 pushes the partition plate 55 to open through the connecting rod 57, and the airbag 31 is connected to the airway again. The inflation mechanism 4 can Replenish gas to keep the scraping position of the airbag 31 in an expanded state. After the pushing ring 51 detaches from the partition plate 53 and enters the next airbag cavity, the previous cavity retracts under the squeezing action of the pushing ring 51. During the continuous movement of the pushing ring 51, the airbag 31 also continuously moves along the esophagus, thereby collecting a section of the esophagus respectively, thereby facilitating a more accurate collection of the exfoliated cells at various positions of the esophagus, and facilitating medical staff to determine the specific location of the lesion. Secondly, after the airbag 31 is inserted into the stomach, when the connecting hole inflates the airbag 31, pulling the airbag 31 can determine whether it is at the connection position between the esophagus and the stomach, which is convenient for sampling in the esophagus. In addition, after the sampling is completed, the airbag 31 can be cut open to directly extract the exfoliated cells between the scraping ring 32 and the sealing ring 33, which is more convenient for medical staff to operate, and the cells located in the circumferential direction are not easy to mix. Not only can the position of the lesion be determined along the length direction of the esophagus, but also along the circumferential direction, and the positioning is more accurate.

[0040] The inflation mechanism 4 includes a sleeve 41 installed at one end of the outer tube 2. The sleeve 41 and the outer tube 2 can be connected by threads or squeezed together, so as to facilitate the reuse of the inflation mechanism 4. One side of the sleeve 41 is provided with an air pipe 42 connected to an external air pressure pump. The air pipe 42 is fixedly connected to the sleeve 41, and the air pipe 42 is connected to an external inflation device. One side of the sleeve 41 is provided with a connecting tube 43, which is fixedly connected to the sleeve 41 and is internally connected. A piston 44 is slidably connected to the inside of the connecting tube 43, and a piston rod 45 is provided at the end of the piston 44, which passes through the connecting tube 43. The piston rod 45 is slidably connected to the connecting tube 43. A spring is provided between the connecting tube 43 and the piston 44, and the two ends of the spring are respectively fixedly connected to the connecting tube 43 and the piston 44.

[0041] A metal disk 46 is provided on the top of the piston rod 45, and the metal disk 46 is fixedly connected to the piston rod 45. A metal ring 47 is provided on the top of the connecting tube 43, and the metal ring 47 is fixedly connected to the connecting tube 43. The metal disk 46 and the metal ring 47 are electrically connected to an external inflation device.

[0042] When inflating, the medical staff turns on the external inflation device, the metal ring 47 contacts the metal disk 46, the gas rushes into the airway, and the airbag 31 is inflated. When the air pressure reaches the point where it is in full contact with the patient's esophagus, the piston 44 moves along the connecting tube 43, the piston 44 drives the piston rod 45 to move upward, the piston rod 45 drives the metal disk 46 to separate from the metal ring 47, and then the inflation device stops inflating. When the push ring 51 squeezes the airbag 31, the high air pressure will push the piston 44 upward. When the piston 44 separates from the connecting tube 43, the gas is discharged from the airway, thereby reducing the damage to the patient's esophagus when the airbag 31 is squeezed. When the push ring 51 enters the next cavity of the airbag 31, when the air pressure is insufficient, the piston 44 drops, the piston 44 drives the piston rod 45 to drop, the piston rod 45 drives the metal disk 46 to contact with the metal ring 47, and the inflation device continues to inflate, thereby ensuring that the gas in the airbag 31 just scrapes the esophagus and does not cause damage to the esophagus, which is more convenient for the operation of medical staff.

[0043] According to the above embodiments, in Embodiment 2, a reeling mechanism 6 for reeling in the pull rope 52 and pulling out the sampling mechanism 3 from the esophagus is provided on the outside of the outer tube 2, and the reeling mechanism 6 includes a frame 61 for medical personnel to hold by hand, and a reel 62 is rotatably connected to the frame 61 via a rotating shaft, and a reel 62 is provided inside the frame 61, and the reel 62 winds the pull rope 52, and a handle for shaking is provided on the outside of the rotating shaft.

[0044] A connecting rope 63 is provided on one side of the outer tube 2, and the connecting rope 63 is fixedly connected to the sleeve 41, and the sleeve 41 is fixedly connected to the outer tube 2. The winding drum 62 includes a winding portion 621 for winding up the pull rope 52, and two winding portions 622 for winding up the connecting rope 63 are provided on both sides of the winding portion 621, and the outer diameter of the winding portion 622 is twice the outer diameter of the winding portion 621.

[0045] When the airbag 31, the outer tube 2 and the inner tube 1 are pulled out, the medical staff holds the frame 61 and shakes the handle, which drives the connecting rope 63 and the pull rope 52 to be pulled synchronously. When the airbag 31 is rolled up, the airbag 31 needs to completely collect the exfoliated cells. The airbag 31 needs to move twice the length of the airbag 31, and the push ring 51 can move the length of the airbag 31. Please refer to Fig. 9 , through the coordinated pulling of the reeling part 1 621 and the reeling part 2 622, while the pushing ring 51 moves on the airbag 31, the pushing ring 51 also needs to move synchronously with the airbag 31. In order to ensure that the airbag 31 completely acts on the length of the esophagus, the reeling rope 52 of the reeling part 1 621 needs to be reeled in half of the length of the connecting rope 63 of the reeling part 2 622, thereby more effectively utilizing the airbag 31. The moving distance of the airbag 31 is 2A, and the moving distance of the pushing ring 51 is A, so the relative moving distances are different.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] 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 diagnostic sampling device for clinical use in gastroenterology, comprising: An inner tube (1), an outer tube (2) is arranged on the outer side of the inner tube (1), and an airway through which air flows is arranged between the outer tube (2) and the inner tube (1); the invention is characterized in that: a sampling mechanism (3), the sampling mechanism (3) is installed on the outer side of the outer tube (2), the sampling mechanism (3) is connected to the outer tube (2), the sampling mechanism (3) is inflated and then expanded, and then scrapes the inside of the esophagus, so that esophageal exfoliated cells are collected; an inflation mechanism (4), the inflation mechanism (4) is installed at the ends of the inner tube (1) and the outer tube (2), and the inflation mechanism (4) flushes gas into the sampling mechanism (3); a stage adjustment mechanism (5), the stage adjustment mechanism (5) is installed between the outer tube (2) and the inner tube (1), and when the sampling mechanism (3) is sampling, the stage adjustment mechanism (5) enables the sampling mechanism (3) to sample different positions of the esophagus respectively; The sampling mechanism (3) comprises an air bag (31) mounted on one side of the outer tube (2), the air bag (31) being in communication with the inside of the airway, a plurality of scraping rings (32) for scraping the esophagus of the patient being arranged on the top of the air bag (31), a sealing ring (33) for sealing the scraping ring (32) after scraping being arranged on one side of each scraping ring (32), the sealing ring (33) and the scraping ring (32) being fixedly connected to the air bag (31); The stage adjustment mechanism (5) comprises a push ring (51) installed on the outside of the outer tube (2), one side of the push ring (51) is located on the outside of the airbag (31), a pull rope (52) is provided inside the inner tube (1), one end of the pull rope (52) is fixedly connected to the push ring (51), the pull rope (52) passes through the inner tube (1) and extends to the outside of the inner tube (1), a plurality of partition plates (53) for separating the airbags (31) are provided inside the airbag (31), each of the partition plates (53) is provided with a compression plate (54) for transmitting gas, a plurality of air holes are provided on the surface of the outer tube (2), a partition plate (55) is provided between each air hole of the outer tube (2), a connecting hole is provided inside the outer tube (2), and a sealing plate (56) for sealing the connecting hole is provided on one side of the connecting hole; The partition plate (55) and the pressing plate (54) are connected via a connecting rod (57); the pressing plate (54) and the partition plate (53) are tightly fitted; and the partition plate (55) is located on the inner wall of the inner tube (1).

2. A clinical diagnostic sampling device for gastroenterology according to claim 1, characterized in that: The inflation mechanism (4) comprises a sleeve (41) mounted at one end of the outer tube (2); an air pipe (42) connected to an external air pressure pump is provided on one side of the sleeve (41); a connecting tube (43) is provided on one side of the sleeve (41); a piston (44) is slidably connected to the interior of the connecting tube (43); a piston rod (45) penetrating the connecting tube (43) is provided at the end of the piston (44); and a spring is provided between the connecting tube (43) and the piston (44).

3. A clinical diagnostic sampling device for gastroenterology according to claim 2, characterized in that: A metal disk (46) is provided on the top of the piston rod (45), and a metal ring (47) is provided on the top of the connecting tube (43). The metal disk (46) and the metal ring (47) are electrically connected to an external inflation device.

4. A gastroenterology clinical diagnostic sampling device according to claim 1, characterized in that: The scraping ring (32) is inclined toward the handheld end of the medical staff, the outer diameter of the sealing ring (33) is smaller than the inner diameter of the scraping ring (32), and the cross section of the sealing ring (33) is inclined.

5. A clinical diagnostic sampling device for gastroenterology according to claim 1, characterized in that: The outside of the outer tube (2) is provided with a reeling mechanism (6) for reeling in the pull rope (52) and withdrawing the sampling mechanism (3) from the esophagus. The reeling mechanism (6) comprises a frame (61) for medical personnel to hold by hand. The inside of the frame (61) is provided with a reeling drum (62), and the reeling drum (62) winds the pull rope (52).

6. A clinical diagnostic sampling device for gastroenterology according to claim 5, characterized in that: A connecting rope (63) is provided on one side of the outer tube (2); the winding drum (62) comprises a winding portion 1 (621) for winding up the pull rope (52); two winding portions 2 (622) for winding up the connecting rope (63) are provided on both sides of the winding portion 1 (621); and the outer diameter of the winding portion 2 (622) is twice the outer diameter of the winding portion 1 (621).

Images