Accurate positioning type bronchofiberscope biopsy sampling device

Abstract

The invention relates to the technical field of medical instruments, and discloses a precise positioning type bronchofiberscope biopsy sampling device which comprises a device main body, an oral cavity inner support mechanism comprises a grip for medical staff to hold, a connecting table is mounted at the top end of the grip, a first connecting shaft block is mounted on the outer surface of the connecting table, and a second connecting shaft block is mounted on the outer surface of the first connecting shaft block; the first connecting shaft block is connected with one end of a bearing shaft rod, the other end of the bearing shaft rod is connected with a second connecting shaft block, the outer side of the second connecting shaft block is connected with an inner supporting plate, and limiting protruding points are arranged on the surface of the inner supporting plate. The tongue pressing assembly and the opening and closing water outlet assembly are both in linkage with the structure in the oral cavity inner supporting mechanism, linkage work of the tongue pressing assembly and the opening and closing water outlet assembly can be synchronously achieved based on work of the oral cavity inner supporting mechanism, efficiency is higher, it can be guaranteed that the process is synchronously achieved, and accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a precise positioning bronchoscopic biopsy sampling device. Background Art

[0002] A bronchoscope is a device that is inserted into the patient's lower respiratory tract through the mouth or nose and is used to observe and take biopsy samples of lung and bronchial lesions. The connected biopsy sampling accessories can help detect early lesions and perform internal surgical procedures such as polyp removal.

[0003] In actual medical applications, the traditional method of using only a single guide tube directly inserted into the patient's mouth often causes discomfort to the patient due to strong stimulation to the throat and airway during the insertion and examination process, causing the patient to unconsciously bite the mouth reflexively, thus affecting the final examination process. In order to ensure the quality of the examination, some existing examination methods also use an oral support mechanism to support the mouth. However, once the mouth is supported, the patient's mouth will unconsciously drool, and the saliva will flow to the patient's chin or throat, causing discomfort to the patient. Doctors often wipe the saliva back and forth with paper. Due to the stickiness of saliva, even though the saliva is wiped away, the patient being examined will still feel uncomfortable. Summary of the Invention

[0004] In order to solve the technical problem that patients may bite unconsciously due to conditioned reflex during bronchoscopic examination, the present invention provides a precise positioning fiberoptic bronchoscopic biopsy sampling device.

[0005] The present invention is implemented by the following technical solutions: a precise positioning bronchoscopic biopsy sampling device, comprising a device body, the device body comprising an intraoral support mechanism for opening the oral cavity; a tongue-pressing and drug-discharging linkage mechanism for pressing the tongue; and a biopsy mechanism for biopsy sampling;

[0006] Among them, the oral support mechanism includes a handle for medical staff to hold, a connecting platform is installed on the top of the handle, and a first connecting shaft block is installed on the outer surface of the connecting platform. The first connecting shaft block is connected to one end of the receiving shaft rod, and the other end of the receiving shaft rod is connected to the second connecting shaft block. The outer side of the second connecting shaft block is connected to the inner support plate, and the surface of the inner support plate is provided with limiting protrusions.

[0007] A third connecting shaft block is mounted on the inner side of the connecting shaft. This third connecting shaft block is connected to one end of the movable shaft, the other end of which is connected to a fourth connecting shaft block. A return spring is connected between the connecting shaft and the movable shaft. The fourth connecting shaft block is mounted on the main telescopic rod, and the sub-telescopic rod is connected to the inner side of the main telescopic rod. The main telescopic rod is sleeved on the surface of the sub-telescopic rod, and the main telescopic rod moves on the surface of the sub-telescopic rod.

[0008] The tongue depressor assembly includes a connecting rack, which is installed on the surface of the main telescopic rod. The outer surface of the connecting rack is meshed with a connecting gear. The inner side of the connecting gear is penetrated by a rotating rod, which is installed on a fixed platform. The outer side of the connecting gear is connected to one end of the tongue depressor rod, and the other end of the tongue depressor rod is connected to the tongue depressor.

[0009] The tongue depressor includes a connecting dish, which stores clean water inside. The connecting dish is connected to the tongue depressor rod. A tongue depressor block is provided at the bottom end of the tongue depressor, a feed port is provided at the top end of the connecting dish, and a water outlet hole is provided on the surface of the tongue depressor block.

[0010] The opening and closing water outlet assembly includes a receiving rod, which is connected to the top of the connecting rack, and a movable groove is provided at the connection between the connecting rack and the receiving rod; the top of the receiving rod is connected to a deflection handle, and the inner side of the deflection handle is connected to a deflection plate, and an adjustment groove is provided on the surface of the deflection plate, and a rotating frame is provided on the inner side of the adjustment groove, and the rotating frame is installed on the adjustment sealing plate.

[0011] The biopsy mechanism includes a handle, two sets of handles are connected by a connecting axis, the outer side of the connecting axis is connected to a first axis rod, and the outer side of the first axis rod is connected to a second axis rod; a movable axis is provided at the connection between the first axis rod and the second axis rod, the top end of the second axis rod is connected to a rod body, a movable biopsy blade is installed on the rod body, the second axis rod and the movable biopsy blade are connected together through the rod body, the rod body is overlapped on the axis frame, the axis frame and the rod body are connected by a limiting slot frame, and the top end of the axis frame is fixedly connected to a fixed biopsy blade.

[0012] As a further improvement to the above solution, three groups of inner support plates are provided. The surfaces of the three groups of inner support plates are curved, and the limiting protrusions limit the position of the teeth. The limiting protrusions limit the inside of the patient's mouth and the teeth, preventing the inner support plates from falling off when supporting the oral cavity.

[0013] As a further improvement to the above solution, the inner support plates support the oral cavity outwards through the three groups of inner support plates, thereby ensuring support during oral cavity inspection and facilitating inspection.

[0014] As a further improvement of the above solution, a tongue depressor connected to the bottom end of the tongue depressor presses down the patient's tongue to prevent the patient's tongue from moving around during the test and affecting the test results.

[0015] As a further improvement of the above solution, the connecting dish and the tongue depressor are connected, and the connecting dish and the tongue depressor are closed and opened by adjusting the sealing plate to control the outflow of clean water.

[0016] As a further improvement of the above scheme, the clean water in the connecting dish slowly flows into the patient's mouth. The patient mixes the clean water with the flowing saliva and spits out the mixed water at one time to prevent the saliva from flowing out uncontrollably and causing discomfort to the patient during the examination.

[0017] As a further improvement of the above solution, the movable biopsy blade connected to the top of the biopsy mechanism rod moves, and the movable biopsy blade moves toward the fixed biopsy blade, and the two sets of blades are closed, thereby removing polyps from the patient's body.

[0018] As a further improvement of the above scheme, a fiber bronchoscope is provided at the top of the device body. The fiber bronchoscope is a visualization lens. The fiber bronchoscope can cooperate with the TV system to perform photography, teaching and dynamic recording. Through the connected biopsy mechanism, it can assist in discovering early lesions and perform in vivo surgical operations for polyp removal.

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

[0020] 1. The present invention innovatively proposes a tongue-pressing and medicine-discharging linkage mechanism, which is further divided into a tongue-pressing component and an opening and closing water outlet component. The tongue-pressing component presses the tongue with a tongue depressor to prevent the tongue from moving around and affecting the examination; the opening and closing water outlet component controls the slow flow of clean water into the patient's mouth. The patient mixes the clean water with the outflowing saliva, and spits out the mixed water at once, preventing uncontrolled saliva from flowing out and causing discomfort to the patient during the examination.

[0021] At the same time, when achieving the above-mentioned innovative effects, the tongue depressor assembly and the opening and closing water outlet assembly are interconnected with the structure in the oral support mechanism. Based on the work of the oral support mechanism, the tongue depressor assembly and the opening and closing water outlet assembly can be linked together, which is more efficient, can also ensure the synchronous implementation of the process, and improves accuracy.

[0022] 2. The present invention innovatively proposes an oral support mechanism that uses an inner support plate to support the oral cavity outward, ensuring support during oral examinations. Furthermore, the inner support plate is provided with limit bumps on its surface to limit the position of the patient's oral cavity and teeth, preventing the inner support plate from falling off while supporting the oral cavity. This prevents strong irritation to the throat and airway during the fiberoptic bronchoscope insertion process, which often causes discomfort to the patient and causes them to unconsciously bite their teeth reflexively, thus affecting the final examination process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the middle part structure;

[0025] Figure 3 This is a schematic diagram of the connection structure of the oral support mechanism of the present invention;

[0026] Figure 4This is a schematic diagram of the connection structure of the tongue-pressing and medicine-discharging linkage mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure of the middle C region;

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the structural cross section of the middle part;

[0029] Figure 7 For the present invention Figure 6 Schematic diagram of the internal structure;

[0030] Figure 8 This is a schematic diagram of the bottom structure of the tongue depressor of the present invention;

[0031] Figure 9 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0032] Figure 10 For the present invention Figure 1 Schematic diagram of the enlarged structure of region B in the middle.

[0033] Description of main symbols:

[0034] 1. Device body; 2. Intraoral support mechanism; 21. Handle; 22. Connecting platform; 23. First connecting shaft block; 24. Supporting shaft rod; 25. Second connecting shaft block; 26. Inner support plate; 27. Positioning bump; 28. Third connecting shaft block; 29. ​​Movable shaft rod; 210. Fourth connecting shaft block; 211. Return spring; 212. Main telescopic rod; 213. Sub-telescopic rod;

[0035] 3. Tongue-depressing and medicine-discharging linkage mechanism; 31. Connecting rack; 32. Connecting gear; 33. Rotating rod; 34. Fixed platform; 35. Tongue-depressing rod; 36. Tongue depressor; 361. Connecting dish; 362. Tongue-depressing block; 363. Feeding port; 364. Water outlet hole; 37. Receiving rod; 38. Movable slot; 39. Deflection handle; 310. Deflection plate; 311. Adjustment slot; 312. Rotating frame; 313. Adjustable sealing plate;

[0036] 4. Biopsy mechanism; 41. Handle; 42. Connecting axis; 43. First axis; 44. Second axis; 45. Movable axis; 46. Axis frame; 461. Rod body; 462. Limiting slot frame; 47. Movable biopsy blade; 48. Fixed biopsy blade; 5. Fiber bronchoscope. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] Example 1:

[0039] Please combine Figure 1-Figure 3 This embodiment provides a precise positioning bronchoscopic biopsy sampling device, comprising a device body 1, wherein the device body 1 includes an intraoral support mechanism 2 for opening the oral cavity; a tongue-pressing and drug-discharging linkage mechanism 3 for pressing the tongue; and a biopsy mechanism 4 for biopsy sampling.

[0040] Among them, the oral support mechanism 2 includes a handle 21 for medical staff to hold, a connecting platform 22 is installed on the top of the handle 21, and a first connecting shaft block 23 is installed on the outer surface of the connecting platform 22. The first connecting shaft block 23 is connected to one end of the receiving shaft rod 24, and the other end of the receiving shaft rod 24 is connected to the second connecting shaft block 25. The outer side of the second connecting shaft block 25 is connected to the inner support plate 26, and the surface of the inner support plate 26 is provided with a limiting protrusion 27.

[0041] The preferred technical solution is that three groups of inner support plates 26 are provided. The surfaces of the three groups of inner support plates 26 are curved, and the limiting protrusions 27 limit the teeth. The limiting protrusions 27 limit the inside of the patient's mouth and the teeth to prevent the inner support plates 26 from falling off when supporting the oral cavity.

[0042] A third connecting shaft block 28 is mounted on the inner side of the connecting shaft 24. This third connecting shaft block 28 is connected to one end of a movable shaft 29. The other end of the movable shaft 29 is connected to a fourth connecting shaft block 210. A return spring 211 is connected between the connecting shaft 24 and the movable shaft 29. The fourth connecting shaft block 210 is mounted on a main telescopic rod 212. A sub-telescopic rod 213 is connected to the inner side of the main telescopic rod 212.

[0043] The main telescopic rod 212 is sleeved on the surface of the sub-telescopic rod 213 , and the main telescopic rod 212 moves on the surface of the sub-telescopic rod 213 .

[0044] Specific implementation steps in Example 1: The medical staff holds the handle 21 and extends the fiber bronchoscope 5 into the patient's lungs. The medical staff puts the inner support plate 26 into a retracted state to facilitate the placement of the oral inner support mechanism 2 into the patient's mouth for support. After the inner support plate 26 enters the patient's mouth, the inner support plate 26 is immediately reset, and the receiving shaft 24 is reset by the reset spring 211. The receiving shaft 24 supports outward, and the first connecting shaft block 23 connected to the bottom end of the receiving shaft 24 deflects, and the third connecting shaft block 28 connected to the receiving shaft 24 deflects synchronously, and the bottom end of the movable shaft 29 deflects around the fourth connecting shaft block 210. Through the outward support of the inner support plate 26, the three groups of inner support plates 26 support the oral cavity outward to ensure support during oral examination.

[0045] Example 2:

[0046] Please combine Figure 4-Figure 5 , Example 2 provides a tongue-pressing and medicine-discharging linkage mechanism 3 based on Example 1, and the tongue-pressing and medicine-discharging linkage mechanism 3 is composed of a tongue-pressing component and an opening and closing water-discharging component; the tongue-pressing component presses the patient's tongue to prevent the patient's tongue from moving during the test;

[0047] The tongue depressor assembly includes a connecting rack 31, which is installed on the surface of the main telescopic rod 212. The outer surface of the connecting rack 31 is meshed with a connecting gear 32, and the inner side of the connecting gear 32 is connected with a rotating rod 33, which is installed on a fixed platform 34; the outer side of the connecting gear 32 is connected to one end of a tongue depressor rod 35, and the other end of the tongue depressor rod 35 is connected to a tongue depressor 36.

[0048] When the inner support plate 26 is reset and supported, the fourth connecting shaft block 210 is driven by the movable shaft 29 to move synchronously, and the fourth connecting shaft block 210 drives the main telescopic rod 212 to retract toward the sub-telescopic rod 213, and the main telescopic rod 212 moves inward. The main telescopic rod 212 drives the connecting rack 31 to move, and the connecting rack 31 drives the connecting gear 32 engaged therewith to move, and the connecting gear 32 rotates around the rotating rod 33. The tongue depressor rod 35 connected to the outside of the connecting gear 32 is synchronously deflected and pressed down, and the tongue depressor rod 35 drives the tongue depressor 36 to press down synchronously, and the tongue depressor 36 drives the receiving rod 37 to slide inside the movable groove 38. The tongue depressor block 362 connected to the bottom end of the tongue depressor 36 presses down the patient's tongue to prevent the patient's tongue from moving around during the examination and affecting the examination effect.

[0049] Example 3:

[0050] Please combine Figure 6-Figure 8Example 3 provides the opening and closing water outlet component in Example 2, the tongue depressor 36 includes a connecting dish 361, the interior of the connecting dish 361 stores clean water, the connecting dish 361 is connected to the tongue depressor rod 35, the bottom end of the tongue depressor 36 is provided with a tongue depressor block 362, the top end of the connecting dish 361 is provided with a feed port 363, and the surface of the tongue depressor block 362 is provided with a water outlet hole 364.

[0051] The opening and closing water outlet assembly includes a receiving rod 37, which is connected to the top of the connecting rack 31. A movable groove 38 is provided at the connection between the connecting rack 31 and the receiving rod 37;

[0052] The top of the receiving rod 37 is connected to a deflection handle 39, which is connected to a deflection plate 310 inside. An adjustment slot 311 is defined on the surface of the deflection plate 310, and a rotating frame 312 is provided inside the adjustment slot 311. The rotating frame 312 is mounted on an adjustable sealing plate 313. The connecting dish 361 is connected to the tongue depressor 362, and the connection between the connecting dish 361 and the tongue depressor 362 is closed and opened by adjusting the sealing plate 313.

[0053] When the connecting rack 31 moves, the connecting rack 31 drives the connecting rod 37 connected to it to move, and the connecting rod 37 drives its deflection handle 39 to deflect, and the deflection handle 39 drives the deflection plate 310 to perform synchronous deflection movement, and the adjustment groove 311 opened on the surface of the deflection plate 310 moves synchronously, and the adjustment groove 311 drives the rotating frame 312 connected to its inner side to perform synchronous movement and deflection, and the rotating frame 312 drives the adjustment sealing plate 313 connected below it to move, and the adjustment sealing plate 313 is opened. The clean water in the connecting dish 361 then falls through the adjustment sealing plate 313, and the clean water then flows through the water outlet hole 364 on the tongue depressor 362 to the tongue, and slowly flows into the patient's mouth through the water flow. The patient mixes the clean water flow with the flowing saliva and spits out the mixed water flow at one time to prevent the saliva from flowing out uncontrollably and causing discomfort to the patient during the examination.

[0054] Example 4:

[0055] Please combine Figure 9-10 , Example 4 provides a biopsy mechanism 4, the biopsy mechanism 4 includes a handle 41, two sets of handles 41 are connected by a connecting axis 42, the outer side of the connecting axis 42 is connected to a first shaft 43, and the outer side of the first shaft 43 is connected to a second shaft 44;

[0056] A movable axis 45 is provided at the connection between the first shaft 43 and the second shaft 44. The top of the second shaft 44 is connected to the rod body 461, and a movable biopsy blade 47 is installed on the rod body 461. The second shaft 44 and the movable biopsy blade 47 are connected together through the rod body 461. The rod body 461 is overlapped on the shaft frame 46. The shaft frame 46 and the rod body 461 are connected by a limiting groove frame 462. The top of the shaft frame 46 is fixedly connected to a fixed biopsy blade 48; a fiber bronchoscope 5 is provided at the top of the device body 1, and the fiber bronchoscope 5 is a visualization lens.

[0057] When the fiber bronchoscope 5 enters the patient's lungs for examination, the staff pulls the handle 41, and the handle 41 deflects around the connecting axis 42, and the first shaft 43 connected to the outside of the connecting axis 42 deflects, and the first shaft 43 drives the second shaft 44 to deflect synchronously through the movable axis 45, and the second shaft 44 drives the rod body 461 to move synchronously, and the movable biopsy blade 47 connected to the top of the rod body 461 moves, and the movable biopsy blade 47 moves toward the fixed biopsy blade 48, and the two sets of blades close together, thereby removing polyps from the patient's body.

[0058] Specific implementation steps of the overall technical solution of the present invention:

[0059] During use, the medical staff holds the handle 21 and extends the fiber bronchoscope 5 into the patient's lungs. The medical staff puts the inner support plate 26 into a retracted state to facilitate the placement of the oral support mechanism 2 into the patient's oral cavity for support. As the inner support plate 26 enters the patient's oral cavity, the inner support plate 26 is immediately reset, and the receiving shaft 24 is reset by the reset spring 211, and the receiving shaft 24 is supported outward. The first connecting shaft block 23 connected to the bottom end of the receiving shaft 24 deflects, and the third connecting shaft block 28 connected to the receiving shaft 24 deflects synchronously. The bottom end of the movable shaft 29 deflects around the fourth connecting shaft block 210. Through the outward support of the inner support plate 26, the three groups of inner support plates 26 support the oral cavity outward to ensure support during oral examination; at the same time, a limiting protrusion 27 is provided on the surface of the inner support plate 26, and the limiting protrusion 27 limits the inside of the patient's oral cavity and teeth to prevent the inner support plate 26 from falling off when supporting the oral cavity.

[0060] At the same time, when the inner support plate 26 is reset and supported, the fourth connecting shaft block 210 is driven by the movable shaft 29 to move synchronously, and the fourth connecting shaft block 210 drives the main telescopic rod 212 to retract toward the sub-telescopic rod 213, and the main telescopic rod 212 moves inward, and the main telescopic rod 212 drives the connecting rack 31 to move, and the connecting rack 31 drives the connecting gear 32 meshed with it to move, and the connecting gear 32 rotates around the rotating rod 33, and the tongue depressor rod 35 connected to the outside of the connecting gear 32 is synchronously deflected and pressed down, and the tongue depressor rod 35 drives the tongue depressor 36 to press down synchronously, and the tongue depressor 36 drives the receiving rod 37 to slide inside the movable groove 38, and the tongue depressor block 362 connected to the bottom end of the tongue depressor 36 presses down the patient's tongue to prevent the patient's tongue from moving around during the examination and affecting the examination effect;

[0061] When the connecting rack 31 moves, the connecting rack 31 drives the receiving rod 37 connected thereto to move, and the receiving rod 37 drives its deflection grip 39 to deflect, and the deflection grip 39 drives the deflection plate 310 to deflect synchronously, and the adjustment slot 311 provided on the surface of the deflection plate 310 moves synchronously, and the adjustment slot 311 drives the rotating frame 312 clamped on its inner side to deflect synchronously, and the rotating frame 312 drives the adjustment sealing plate 313 connected below it to move, and the adjustment sealing plate 313 is opened, and the clean water in the connecting dish 361 then falls through the adjustment sealing plate 313, and the clean water then flows through the water outlet hole 364 on the tongue depressor 362 to the tongue, and slowly flows into the patient's mouth through the water flow. The patient mixes the clean water with the flowing saliva and spits out the mixed water at one time, preventing the saliva from flowing out uncontrollably and causing discomfort to the patient during the examination;

[0062] At the same time, when the fiber bronchoscope 5 enters the patient's lungs for examination, the staff pulls the handle 41, and the handle 41 deflects around the connecting axis 42, and the first shaft rod 43 connected to the outside of the connecting axis 42 deflects, and the first shaft rod 43 drives the second shaft rod 44 to deflect synchronously through the movable axis 45, and the second shaft rod 44 drives the rod body 461 to move synchronously, and the movable biopsy blade 47 connected to the top of the rod body 461 moves, and the movable biopsy blade 47 moves toward the fixed biopsy blade 48, and the two sets of blades close together, thereby removing polyps from the patient's body.

[0063] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A precise positioning bronchoscopic biopsy sampling device, comprising a device body (1), characterized in that: The device body (1) comprises an intraoral support mechanism (2) for opening the patient's oral cavity; a tongue-pressing and medicine-discharging linkage mechanism (3) for pressing the patient's tongue; and a biopsy mechanism (4) for biopsy sampling. The tongue-pressing and medicine-discharging linkage mechanism (3) is composed of a tongue-pressing component and an opening and closing water-discharging component; The oral support mechanism (2) includes a handle (21) for medical staff to hold, a connecting platform (22) is installed on the top of the handle (21), a first connecting shaft block (23) is installed on the outer surface of the connecting platform (22), the first connecting shaft block (23) is connected to one end of the receiving shaft rod (24), the other end of the receiving shaft rod (24) is connected to the second connecting shaft block (25), the outer side of the second connecting shaft block (25) is connected to the inner support plate (26), and the surface of the inner support plate (26) is provided with a limiting protrusion (27).

2. The precise positioning bronchoscopic biopsy sampling device according to claim 1, characterized in that: The inner support plates (26) are provided in three groups, and the surfaces of the three groups of inner support plates (26) are arc-shaped. The limiting protrusions (27) limit the teeth in the patient's mouth.

3. The precise positioning bronchoscopic biopsy sampling device according to claim 1, characterized in that: A third connecting shaft block (28) is installed on the inner side of the receiving shaft (24), the third connecting shaft block (28) is connected to one end of the movable shaft (29), the other end of the movable shaft (29) is connected to a fourth connecting shaft block (210), and a return spring (211) is connected between the receiving shaft (24) and the movable shaft (29).

4. The precise positioning bronchoscopic biopsy sampling device according to claim 3, characterized in that: The fourth connecting shaft block (210) is mounted on the main telescopic rod (212), and the inner side of the main telescopic rod (212) is connected to the sub-telescopic rod (213); The main telescopic rod (212) is sleeved on the surface of the sub-telescopic rod (213), and the main telescopic rod (212) moves on the surface of the sub-telescopic rod (213).

5. The precise positioning bronchoscopic biopsy sampling device according to claim 4, characterized in that: The tongue-pressing and medicine-discharging linkage mechanism (3) is composed of a tongue-pressing component and an opening and closing water-discharging component; The tongue depressor assembly includes a connecting rack (31), the connecting rack (31) is mounted on the surface of the main telescopic rod (212), the outer surface of the connecting rack (31) is meshed with a connecting gear (32), the inner side of the connecting gear (32) is connected with a rotating rod (33), and the rotating rod (33) is mounted on a fixed platform (34); One end of a tongue depressor rod (35) is connected to the outer side of the connecting gear (32), and the other end of the tongue depressor rod (35) is connected to a tongue depressor (36).

6. The precise positioning bronchoscopic biopsy sampling device according to claim 5, characterized in that: The tongue depressor (36) comprises a connecting dish (361), wherein clean water is stored inside the connecting dish (361), and the connecting dish (361) is connected to the tongue depressor rod (35). A tongue depressor block (362) is provided at the bottom end of the tongue depressor (36), a feed port (363) is provided at the top end of the connecting dish (361), and a water outlet hole (364) is provided on the surface of the tongue depressor block (362).

7. The precise positioning bronchoscopic biopsy sampling device according to claim 5, characterized in that: The opening and closing water outlet assembly includes a receiving rod (37), the receiving rod (37) is connected to the top end of the connecting rack (31), and a movable groove (38) is provided at the connection between the connecting rack (31) and the receiving rod (37); The top end of the receiving rod (37) is connected to a deflection handle (39), the inner side of the deflection handle (39) is connected to a deflection plate (310), an adjustment groove (311) is provided on the surface of the deflection plate (310), a rotating frame (312) is provided on the inner side of the adjustment groove (311), and the rotating frame (312) is installed on the adjustment sealing plate (313).

8. The precise positioning bronchoscopic biopsy sampling device according to claim 1, characterized in that: The connecting dish (361) is communicated with the tongue pressing block (362), and the connecting dish (361) and the tongue pressing block (362) are closed and opened by adjusting the sealing plate (313).

9. The precise positioning bronchoscopic biopsy sampling device according to claim 1, characterized in that: The biopsy mechanism (4) comprises a handle (41), two sets of handles (41) are connected via a connecting axis (42), the outer side of the connecting axis (42) is connected to a first shaft (43), and the outer side of the first shaft (43) is connected to a second shaft (44); A movable axis (45) is provided at the connection between the first shaft (43) and the second shaft (44); the top end of the second shaft (44) is connected to a rod body (461); a movable biopsy blade (47) is installed on the rod body (461); the second shaft (44) and the movable biopsy blade (47) are connected together through the rod body (461); the rod body (461) is overlapped on the shaft frame (46); the shaft frame (46) and the rod body (461) are connected through a limiting slot frame (462); the top end of the shaft frame (46) is fixedly connected to a fixed biopsy blade (48); A fiber bronchoscope (5) is provided at the top end of the device body (1), and the fiber bronchoscope (5) is a visualization lens.

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