Endoscopic biopsy device for respiratory crisis

Abstract

The endoscopic biopsy device comprises a fixed clamp body, a movable clamp body, a deep barrel, a core rod, a movable block, a clamping plate, a rotating plate, a matching plate and an abutting piece, the rotating plate is provided with a sampling plate through a connecting piece, and the abutting piece is rotationally connected with the clamping plate through a movable piece; through cooperation of the endoscopic system, the deep barrel is close to a sampling position, the clamping plate and the sampling plate extend out of the deep barrel and are unfolded through pushing of the core rod, and then the clamping plate and the sampling plate rotate in the original positions and are in clamping contact with the sampling part, so that the sampling plate completes sampling work; the sampling plate further rotates relative to the clamping plate to be in full contact with the sampling part, and finally moves towards the lateral direction to be further in contact with the sampling part in the process of sliding and scraping along the sampling part along with the drawing of the core rod, so that the sampling sufficiency is ensured, and the mode is convenient to operate and full in sampling; the harm to the respiratory system of a patient is small.

Description

Technical Field

[0001] The invention relates to the technical field of respiratory system living body sampling structures, in particular to an endoscopic living body sampling device for critical respiratory diseases. Background Art

[0002] The full name of the Respiratory and Critical Care Department is the Respiratory and Critical Care Medicine Department, which is a merger of the Respiratory Department and the Critical Care Medicine Department. It mainly treats respiratory diseases, such as upper respiratory tract diseases, lung diseases, and bronchial diseases. In addition, some chest diseases and blood system diseases can also induce dyspnea, and you can also go to the Respiratory and Critical Care Medicine Department for diagnosis and treatment;

[0003] For patients with severe lung, some bronchial and chest diseases, live sampling is performed according to actual conditions to facilitate accurate testing and efficient diagnosis;

[0004] A respiratory and critical care endoscopic live sampling system with publication number CN112022230A has a high degree of visualization, but sampling is performed by drawing with a syringe, which is inconvenient to operate and causes certain bleeding inside the respiratory system. The system fails to perform safe and easy-to-operate scraping sampling deep in the respiratory system.

[0005] To this end, we propose an endoscopic biopsy device for critical respiratory illness. Summary of the invention

[0006] The object of the present invention is to provide an endoscopic biopsy device for critical respiratory diseases to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides an endoscopic biopsy device for critical respiratory diseases, comprising a fixed clamp body and a movable clamp body rotatably connected to the fixed clamp body;

[0008] It also includes: a connecting part and a movable part, the end of the fixed clamp body is fixedly connected to a penetration tube, the penetration tube is connected to an endoscope system, the penetration tube is movably fitted with a core rod connected to the movable clamp body, the end of the penetration tube is frictionally fitted with a movable block, the movable block is rotatably connected to two clamping plates, the clamping plate is rotatably connected to a rotating plate, a sampling plate is installed on the rotating plate through the connecting part, the end of the rotating plate is rotatably connected to a matching plate, the end of the core rod is fixedly connected to a pressure piece that penetrates into the movable block, and the pressure piece is rotatably connected to the clamping plate through the movable part.

[0009] Preferably, one end of the movable block is provided with a rotating groove that rotates with the clamping plate, and the other end of the movable block is provided with a movable groove that slidably cooperates with the pressing member. The pressing member is composed of an insert plate and two wedge plates, and the other end of the movable groove is pyramidal.

[0010] Preferably, a limiting groove is provided in the middle of the plug plate, and a limiting rod which is slidably matched with the limiting groove is fixedly connected inside the movable block.

[0011] Preferably, the clamping plate is provided with an embedding groove cooperating with the connecting piece, the connecting piece includes a connecting plate adhered to the sampling plate, the rotating plate is provided with a plurality of inclined sliding grooves, and a sliding rod fixedly connected to the connecting plate is slidably engaged in the sliding groove.

[0012] Preferably, an inclined groove is provided in the movable block, a sliding column is slidably fitted in the inclined groove, the sliding column is rollingly fitted with the wedge plate, and the sliding column is fixedly connected with the clamping plate.

[0013] Preferably, the movable part includes a pressure column fixedly connected to the side of the wedge plate, the pressure column is in pressure contact with the matching plate, the end of the matching plate is an arc-shaped structure, the sliding column is rotatably connected to a rotating shaft, the matching plate passes through the rotating shaft, the rotating shaft is rotatably connected to a connecting shaft, and a tension spring is hung between the two connecting shafts.

[0014] Preferably, the end of the core rod is fixedly connected to a connection block fixedly connected to the plug plate, and a plurality of plug-in rods are fixedly connected to the connection block, and the plug-in rods are movably plugged with the movable block.

[0015] Preferably, two limiting rings are fixedly connected inside the deep tube, and the movable block is located between the two limiting rings.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Through the cooperation of the endoscope system, the penetration tube inserted into the respiratory system is brought close to the sampling position, and the core rod is first pushed forward to make the clamping plate and the sampling plate extend and unfold from the penetration tube, and then the clamping plate and the sampling plate are rotated at their original positions, and the clamping contacts the sampling site, so that the sampling plate completes the sampling work, and the sampling plate is further rotated relative to the clamping plate to fully contact the sampling site, and finally as the core rod is pulled out, the sampling plate slides and scrapes along the sampling site, and the sampling plate moves to the side at the same time to further contact the sampling site to ensure the adequacy of the sampling. This method is easy to operate and the sampling is sufficient, and the patient's respiratory system is less damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the end of the in-depth cylinder of the present invention;

[0020] Figure 3This is a schematic cross-sectional view of the end structure of the in-depth tube of the present invention;

[0021] Figure 4 This is a schematic diagram of the split structure of the deep tube and the core rod of the present invention;

[0022] Figure 5 It is a schematic diagram of the split structure of the connecting block and the plug board of the present invention;

[0023] Figure 6 It is a schematic diagram of the matching structure of the movable block and the clamping plate of the present invention;

[0024] Figure 7 It is a schematic diagram of the split structure of the movable block and the clamping plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the movable block of the present invention;

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the movable block of the present invention and the disassembled structure of the clamping plate and the pressing piece;

[0027] Fig.10 It is a schematic diagram of the matching structure of the clamping plate and the pressing member of the present invention;

[0028] Fig.11 It is a schematic diagram of the cross-sectional structure of the clamping plate of the present invention;

[0029] Fig.12 It is a schematic diagram of the structure of two clamping plates being separated from each other according to the present invention;

[0030] Fig.13 It is a schematic diagram of the split structure of the clamping plate and the rotating plate, the rotating shaft and the sliding column of the present invention;

[0031] Fig.14 It is a schematic diagram of the disassembled structure of the slide bar and the slide groove, the matching plate and the rotating shaft of the present invention.

[0032] In the figure: 1. fixed clamp body; 2. movable clamp body; 3. penetration tube; 4. core rod; 5. movable block; 6. clamping plate; 7. rotating plate; 8. sampling plate; 9. matching plate; 10. rotating groove; 11. movable groove; 12. limiting groove; 13. limiting rod; 14. embedding groove; 15. connecting plate; 16. sliding groove; 17. sliding rod; 18. inclined groove; 19. sliding column; 20. pressing column; 21. rotating shaft; 22. connecting shaft; 23. tension spring; 24. connecting block; 25. plug-in rod; 26. limiting ring; 27. plug-in plate; 28. wedge plate; 29. ​​magnetic plate; 30. endoscope system; 31. insertion end. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-Figure 14 The present invention provides an endoscopic biopsy device for critical respiratory diseases, comprising a fixed clamp body 1 and a movable clamp body 2 rotatably connected to the fixed clamp body 1;

[0035] It also includes: a connecting piece and a movable piece, the end of the fixed clamp body 1 is fixedly connected with a flexible penetration tube 3, the penetration tube 3 is movably matched with a flexible core rod 4 connected to the movable clamp body 2, the end of the penetration tube 3 is frictionally matched with a movable block 5, the movable block 5 is rotatably connected with two clamping plates 6, the clamping plate 6 is rotatably connected with a rotating plate 7, the rotating plate 7 is installed with a sampling plate 8 through a connecting piece, the end of the rotating plate 7 is rotatably connected with a matching plate 9, the end of the core rod 4 is fixedly connected with a pressing piece of the penetration movable block 5, and the pressing piece is rotatably connected with the clamping plate 6 through a movable piece;

[0036] The endoscope system 30 is connected to the penetration tube 3, and the end of the insertion end 31 is located at the end of the penetration tube 3;

[0037] The endoscope system 30 is an existing conventional technology, and the present application does not improve its internal structure. The main structure of the endoscope system 30 includes an operating part, an insertion part 31, a catheter hose, and a light guide plug part. There are two types of endoscope systems, namely, a fiberscope endoscope system and an electronic endoscope endoscope system. The two endoscope systems 30 have obvious differences in the operating part, the insertion part, and the light guide plug part.

[0038] The main structure of the fiberscope endoscopy system: the light guide plug part is mainly composed of a water-gas joint and a light guide joint; the operation part is composed of eyepieces and rotary knobs and other parts. Since the fiberscope endoscopy system requires direct observation or the use of an external camera to display on the display terminal, its operation part is equipped with an eyepiece; the structure of the insertion part has two optical fiber bundles: one is the light guide bundle and the other is the image guide bundle. In addition to these two optical fiber bundles, there are also water and gas pipelines and instrument pipelines inside the insertion part;

[0039] Principle of fiberoptic soft endoscope system: There are two fiber optic bundles inside: one is the light guide, which transmits the light source to the lesion end to provide lighting; the other is called the image guide bundle, which is a group of optical fibers, composed of many single optical fibers, and its flexibility can be bent to a certain degree without breaking. The image guide bundle is the image channel connecting the eyepiece and the objective lens, which can transmit the lesion situation to the clinical user. The image guide bundle is the core part of the fiberoptic endoscope. A single image guide fiber can only transmit light from a fixed point. If a complete image is to be transmitted, many image guide fibers need to be arranged regularly to form an image guide bundle.

[0040] The main structure of the electronic soft endoscope system: the light guide insertion part not only has a water-gas joint box and a light guide joint, but also has an electrical joint connected to the endoscope camera host; the operation part is different from the fiber soft endoscope in that it has no eyepiece, but only a direction knob, a remote control button, and a water-gas button; in addition to the water-gas pipeline and the instrument pipeline, the core part of the electronic soft endoscope imaging is at the front end of the insertion part;

[0041] The principle of the electronic flexible endoscope system is to provide lighting for the lesion end through a light guide beam, and the imaging of the electronic flexible endoscope is acquired through the CCD imaging system at the front end of the mirror insertion part. After the image is converted into an electrical signal, it is transmitted to the image processing system via a cable and displayed on a high-definition monitor, allowing clinical users to observe the lesion condition.

[0042] It is worth noting that: the endoscope system 30 in the present application can also use the medical electronic endoscope with the prior art publication number CN2264566Y, including an operating part, a network management component, a light receiving part snake bone component, a button frame, and a front end part (i.e., an insertion end 31). The network management component connects the operating part, the snake bone component, the front end and the light receiving part to each other as a whole; the endoscope uses electronic, optical, and mechanical technologies, and a fully waterproof structure, so that the triangular light in the image processing device is transmitted to the endoscope through the optical fiber bundle, and the true color image is reflected through the monitor; the electronic endoscope has the characteristics of convenient observation and detection and long service life, and is a new type of medical instrument for diagnosing and examining the stomach, intestines, and bronchi.

[0043] A rotating groove 10 for rotating with the clamping plate 6 is provided at one end of the movable block 5, and a movable groove 11 for slidingly cooperating with the pressing member is provided at the other end of the movable block 5. The pressing member is composed of an insert plate 27 and two wedge-shaped plates 28, and the other end of the movable groove 11 is pyramid-shaped;

[0044] A limiting groove 12 is provided in the middle of the plug plate 27, and a limiting rod 13 is fixedly connected to the movable block 5 and slides with the limiting groove 12. The limiting rod 13 cooperates with the limiting groove 12 to ensure that the plug plate 27 can move smoothly along the movable groove 11. When the end of the plug plate 27 contacts the other end of the movable groove 11, the limiting rod 13 contacts one end of the limiting groove 12, so that the core rod 4 drives the movable block 5 to move outward along the deep tube 3; when the wedge plate 28 is separated from the sliding column 19, the limiting rod 13 contacts the other end of the limiting groove 12, so that the core rod 4 drives the movable block 5 to move inward along the deep tube 3.

[0045] The clamping plate 6 is provided with an embedding groove 14 that cooperates with the connecting piece, and the connecting piece includes a connecting plate 15 that is adhered to the sampling plate 8. The rotating plate 7 is provided with a plurality of inclined sliding grooves 16, and a sliding rod 17 that is fixedly connected to the connecting plate 15 is slidably matched in the sliding groove 16. After the two merged clamping plates 6 and the two sampling plates 8 contact the sampled part, when the sampling plate 8 and the clamping plate 6 are driven to move from the sampling part by the retracted core rod 4, the sampling plate 8 scrapes along the sampling part, so that the sampling plate 8 fully acts on the sampling part to ensure sufficient sampling. When the sampling plate 8 moves along the sampling part, the friction reaction of the sampling part causes the sliding rod 17 to move along the sliding groove 16 (in the initial state, the sliding rod 17 is located in the middle of the sliding groove 16), so that the connecting plate 15 and the sampling plate 8 slide obliquely relative to the clamping plate 6, and the sampling plate 8 slides obliquely at the sampling part, further acts on the sampling part, and fully scrapes the sampling part.

[0046] An inclined groove 18 is provided in the movable block 5, and a sliding column 19 is slidably matched in the inclined groove 18. The sliding column 19 rolls with the wedge plate 28, and the sliding column 19 is connected and fixed to the clamping plate 6. When the wedge plate 28 slides along the movable groove 11, the wedge plate 28 presses the sliding column 19, so that the sliding column 19 moves along the inclined groove 18, so that the tension spring 23 is pulled, so that the two clamping plates 6 are moved away from each other.

[0047] When the wedge-shaped plate 28 presses against the sliding column 19, the sliding column 19 rolls, so that the clamping plate 6 extending into the deep tube 3 rotates and unfolds, and the sampling plate 8 unfolds.

[0048] The movable part includes a pressing column 20 connected and fixed to the side of the wedge plate 28, the pressing column 20 is in pressing contact with the matching plate 9, the end of the matching plate 9 is an arc-shaped structure, the sliding column 19 is rotatably connected to the rotating shaft 21, the matching plate 9 passes through the rotating shaft 21, the rotating shaft 21 is rotatably connected to the connecting shaft 22, and a tension spring 23 is hung and matched between the two connecting shafts 22;

[0049] It is worth noting that a magnetic attraction plate 29 is provided between the outer side of the rotating plate 7 and the clamping plate 6 to cooperate with each other;

[0050] At the beginning, the wedge plate 28 moves along the movable block 5. At this time, the end of the wedge plate 28 has not yet contacted the other end of the movable groove 11. The movable block 5 does not move along the outside of the deep tube 3 under the action of friction. The wedge plate 28 moves to contact the sliding column 19. On the one hand, it presses the sliding column 19 to make the sliding column 19 slide along the inclined groove 18, thereby driving the two clamping plates 6 away from each other. On the other hand, the moving wedge plate 28 drives the sliding column 19 to roll, thereby making the two clamping plates 6 rotate and open. Finally, the end of the wedge plate 28 contacts the other end of the movable groove 11, making the movable block 5 move outward along the deep tube 3, thereby making the two opened clamping plates 6 extend out of the deep tube 3, so that the sampling plate 8 can subsequently contact the collection point in the respiratory system channel. At this time, the pressing column 20 is away from the arc end of the matching plate 9. Under the magnetic attraction of the magnetic plate 29, the rotating plate 7 is stored in the embedded groove 14 to prevent the sampling plate 8 from contacting other parts.

[0051] When the clamping plate 6 moves to the sampling part, the core rod 4 is retracted to make the wedge plate 28 move in the opposite direction along the movable block 5, and the clamping plate 6 rotates in the original position and approaches each other, thereby clamping the sampling part, and then the pressing column 20 on the wedge plate 28 contacts the arc end of the matching plate 9, thereby rotating the matching plate 9, and the matching plate 9 slides adaptively on the rotating shaft 21, and the rotating plate 7 rotates, thereby driving the sampling plate 8 to rotate out of the embedding groove 14 and further contact the sampling part, and finally the limiting rod 13 presses and contacts the end of the limiting groove 12, thereby moving the two combined sampling plates 8 and the two clamping plates 6, and the movable block 5 moves along the deep tube 3 to be stored inside the deep tube 3, so as to avoid the sampling plate 8 from being contaminated when it is taken out of the human respiratory system.

[0052] The end of the core rod 4 is fixedly connected to a connecting block 24 connected to a plug plate 27, and a plurality of plug rods 25 are fixedly connected to the connecting block 24. The plug rods 25 are movably plugged with the movable block 5. When the movable block 5 moves along the insertion tube 3, the plurality of plug rods 25 are used to ensure that the movable block 5 moves smoothly relative to the connecting block 24. That is, when the connecting block 24 moves, the plug plate 27 drives the movable block 5 to move, and under the action of the plug rods 25, the movable block 5 moves smoothly with the connecting block 24.

[0053] Two limiting rings 26 are fixedly connected in the deep-insertion tube 3, and the movable block 5 is located between the two limiting rings 26. The limiting rings 26 limit the position of the movable block 5 to prevent the movable block 5 from always being located in the two limiting rings 26, and the movable block 5 will not be separated from the deep-insertion tube 3, nor will it enter the deep-insertion tube 3 deeply;

[0054] It is worth noting that the diameter of the connecting block 24 is smaller than the diameter of the inner ring of the limiting ring 26 , while the diameter of the movable block 5 is larger than the diameter of the inner ring of the limiting ring 26 .

[0055] Working principle: First, install the sampling plate 8 on the connecting plate 15, and make the sliding rod 17 located in the middle of the sliding groove 16;

[0056] Then, the flexible penetration tube 3 is inserted into the patient's respiratory system, and when the end of the penetration tube 3 is close to the sampling site along the respiratory system, the movement of the penetration tube 3 is stopped;

[0057] Then, by moving the movable clamp body 2, the core rod 4 is moved along the deep-penetrating tube 3 toward the movable block 5, the core rod 4 drives the connecting block 24 and the plug plate 27 to move toward the movable block 5, the plug plate 27 and the wedge plate 28 move along the movable groove 11, the wedge plate 28 contacts the sliding column 19, and the sliding column 19 moves, wherein due to the friction between the movable block 5 and the deep-penetrating tube 3, at this time, the end of the wedge plate 28 has not yet contacted the other end of the movable groove 11, the limiting rod 13 slides from one end of the limiting groove 12 to the other end, and the movable block 5 does not move along the outside of the deep-penetrating tube 3 under the action of friction;

[0058] The wedge plate 28 contacts the sliding column 19, so that the wedge plate 28 presses the sliding column 19, so that the two sliding columns 19 move away from each other along the inclined groove 18, the tension spring 23 is pulled, and the two clamping plates 6 move away from each other and move a certain distance (the length of the inclined groove 18), so that the end of the clamping plate 6 extends into a part of the deep tube 3 and remains in an open state, wherein the pressing column 20 is away from the arc end of the matching plate 9, and under the action of the magnetic attraction plate 29, the rotating plate 7 is stored in the embedding groove 14 to prevent the sampling plate 8 from contacting other parts;

[0059] The core rod 4 continues to move, the end of the wedge plate 28 contacts the other end of the movable groove 11, and the limiting rod 13 contacts the other end of the limiting groove 12, so that the core rod 4 drives the movable block 5 to overcome the friction of the deep tube 3, so that the movable block 5 moves, and the opened clamping plate 6 moves to the sampling position;

[0060] Next, the movable clamp body 2 is moved in the reverse direction, so that the core rod 4 is withdrawn along the penetration tube 3, and the insert plate 27 moves away from the other end of the movable groove 11, and the limit rod 13 slides from the other end of the limit groove 12 to one end. Due to the friction between the penetration tube 3 and the movable block 5, the movable block 5 remains in its original position, and the wedge plate 28 moves along the movable block 5. The wedge plate 28 gradually separates from the sliding column 19. Under the action of the tension spring 23, the two sliding columns 19 are moved closer to each other along the inclined groove 18 and roll in the reverse direction, so that the two clamping plates 6 rotate and approach, and the two clamping plates 6 clamp the sampling part, and the sampling plate 8 also contacts the sampling part at the same time;

[0061] The pressing column 20 contacts the arc-shaped end of the matching plate 9, so that the matching plate 9 rotates with the rotating shaft 21 as the rotating center, and the matching plate 9 slides adaptively along the rotating shaft 21, so that the rotating plate 7 rotates, and the sampling plate 8 is separated from the embedding groove 14, so as to further contact the sampling part, ensuring that the sampling plate 8 is fully in contact and collects the sample. During this process, the clamping plate 6 does not move relative to the deep cylinder 3;

[0062] Then, the movable clamp body 2 continues to move in the reverse direction, and the limiting rod 13 contacts one end of the limiting groove 12, so that the core rod 4 drives the movable block 5 to overcome the friction of the deep tube 3, so that the movable block 5 moves into the deep tube 3, so that the two combined clamping plates 6 and the sampling plate 8 move into the deep tube 3;

[0063] Among them, two sampling plates 8 attached to the sampling part scrape along the sampling part, so that the sampling plates 8 fully act on the sampling part to ensure sufficient sampling, and when the sampling plates 8 move along the sampling part, the friction reaction of the sampling part causes the slide bar 17 to move along the slide groove 16, so that the connecting plate 15 and the sampling plate 8 slide obliquely relative to the clamping plate 6, and the sampling plate 8 slides obliquely on the sampling part, further acts on the sampling part, and fully scrapes the sampling part;

[0064] Until the sampling plate 8 and the clamping plate 6 are separated from the sampling part and enter the deep tube 3, the storage is completed. This method effectively ensures the sampling and storage of the sampling plate 8, and reduces the risk of contamination of the sampling plate 8;

[0065] Finally, the penetration tube 3 is taken out and the sample on the sampling plate 8 is tested.

[0066] 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.

[0067] 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. An endoscopic biopsy device for critical respiratory disease, comprising: A fixed jaw body (1) and a movable jaw body (2) rotatably connected to the fixed jaw body (1); The invention is characterized in that it also includes: a connecting part and a movable part, the end of the fixed clamp body (1) is fixedly connected with a penetration tube (3), the penetration tube (3) is connected with an endoscope system (30), the penetration tube (3) is movably matched with a core rod (4) connected to the movable clamp body (2), the end of the penetration tube (3) is frictionally matched with a movable block (5), the movable block (5) is rotatably connected with two clamping plates (6), the clamping plate (6) is rotatably connected with a rotating plate (7), the rotating plate (7) is installed with a sampling plate (8) through the connecting part, the end of the rotating plate (7) is rotatably connected with a matching plate (9), the end of the core rod (4) is fixedly connected with a pressure piece that penetrates into the movable block (5), and the pressure piece is rotatably connected with the clamping plate (6) through the movable part.

2. The endoscopic biopsy device for critical respiratory illness according to claim 1, characterized in that: One end of the movable block (5) is provided with a rotating groove (10) for rotating with the clamping plate (6), and the other end of the movable block (5) is provided with a movable groove (11) for slidingly cooperating with the pressing member, the pressing member is composed of an insert plate (27) and two wedge plates (28), and the other end of the movable groove (11) is pyramidal.

3. The endoscopic biopsy device for critical respiratory illness according to claim 2, characterized in that: A limiting groove (12) is provided in the middle of the plug plate (27), and a limiting rod (13) is fixedly connected inside the movable block (5) and is slidably matched with the limiting groove (12).

4. The endoscopic biopsy device for critical respiratory illness according to claim 1, characterized in that: The clamping plate (6) is provided with an embedding groove (14) matched with the connecting piece, and the connecting piece includes a connecting plate (15) adhered to the sampling plate (8). The rotating plate (7) is provided with a plurality of inclined sliding grooves (16), and a sliding rod (17) connected and fixed to the connecting plate (15) is slidably matched in the sliding groove (16).

5. The endoscopic biopsy device for critical respiratory illness according to claim 2, characterized in that: The movable block (5) is provided with an inclined groove (18), a sliding column (19) is slidably fitted in the inclined groove (18), the sliding column (19) is rollingly fitted with the wedge plate (28), and the sliding column (19) is connected and fixed to the clamping plate (6).

6. The endoscopic biopsy device for critical respiratory illness according to claim 5, characterized in that: The movable part comprises a pressing column (20) connected and fixed to the side of the wedge plate (28), the pressing column (20) is in pressing contact with the matching plate (9), the end of the matching plate (9) is in an arc-shaped structure, the sliding column (19) is rotatably connected to a rotating shaft (21), the matching plate (9) passes through the rotating shaft (21), the rotating shaft (21) is rotatably connected to a connecting shaft (22), and a tension spring (23) is hung and matched between the two connecting shafts (22).

7. The endoscopic biopsy device for critical respiratory illness according to claim 2, characterized in that: The end of the core rod (4) is fixedly connected to a connection block (24) connected and fixed to the plug plate (27); a plurality of plug-in rods (25) are fixedly connected to the connection block (24); and the plug-in rods (25) are movably plugged with the movable block (5).

8. The endoscopic biopsy device for critical respiratory illness according to claim 1, characterized in that: Two limiting rings (26) are fixedly connected inside the penetration tube (3), and the movable block (5) is located between the two limiting rings (26).

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