Bronchoscopy sampling device

Abstract

The application provides a bronchoscope sampling device, which comprises an operating part and two groups of mounting shells, the operating part is arranged in the two groups of mounting shells, one end of the operating part is provided with an eyepiece part, the other end is provided with an endoscope connecting pipe, one end of the endoscope connecting pipe is provided with an endoscope objective lens, a sampling pipe is arranged in the endoscope connecting pipe, a pull wire is arranged in the sampling pipe, a pulling assembly is arranged in the mounting shell and connected with the pull wire, two groups of branch wires at one end of the pull wire are wound on two groups of first wire wheels, one end of the first wire wheel is provided with a transmission rod connected through a reversing assembly, one end of the transmission rod is provided with a slidingly connected connecting sleeve, the connecting sleeve is elastically connected with the sampling pipe, one end of the connecting sleeve is provided with a spiral cutting knife, the spiral cutting knife is arranged in a shielding cylinder at one end of the sampling pipe, and a cutting assembly is arranged in the shielding cylinder. After the sampling device samples the lesion position, the sample is not easy to fall off in the process of being taken out of the patient's body, and the sampling efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a fiberoptic bronchoscope sampling device. Background Technology

[0002] A fiberoptic bronchoscope, also known as a bronchoscope, is an instrument used to diagnose bronchial diseases. It has strong light-guiding capabilities, high brightness, and a clear field of view. It can be easily inserted into the trachea and then into the bronchi through the mouth or nose, allowing doctors to directly observe the trachea, the openings of the left and right bronchial lobes, and the condition of the mucous membranes. Currently, the tip of the fiberoptic bronchoscope is also used to take samples from the patient's lesions to better understand the patient's condition.

[0003] For example, Chinese patent number 202020497466.8 provides a fiberoptic bronchoscope sampling device, including an observation and sampling device and a control device. The observation and sampling device includes a breathing enhancement mechanism, a first observation mechanism, and a sampling mechanism. This fiberoptic bronchoscope sampling device, through the setting of the breathing control mechanism, can reduce cell damage to the patient's sampling site during the sampling process. However, through analysis of the above patent and in combination with existing fiberoptic bronchoscope sampling devices, it was found that traditional fiberoptic bronchoscope sampling devices only use ordinary blades to cut and sample the patient's lesion tissue. After sampling the lesion site, the sample is prone to falling out during the process of removing it from the patient's body, resulting in sampling failure. Therefore, in view of this, a fiberoptic bronchoscope sampling device has been provided. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a fiberoptic bronchoscope sampling device to solve the technical problem mentioned in the background art: traditional fiberoptic bronchoscope sampling devices only use ordinary blades to cut and sample the patient's lesion tissue. After sampling the lesion site, the sample is prone to falling out during the process of removing it from the patient's body, resulting in sampling failure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fiberoptic bronchoscope sampling device, comprising an operating part, a mounting shell, an endoscope objective, a sampling assembly, and an operating mechanism;

[0006] The operating part is housed inside the mounting housing, and the operating part is connected to the endoscope objective lens through an endoscope connecting tube, which contains a sampling tube.

[0007] The sampling assembly includes a spiral cutter, which is rotatably disposed in a shielding tube at one end of the sampling tube along its axis, and a cutting assembly is disposed in the shielding tube.

[0008] The operating mechanism is disposed inside the mounting housing, and the operating mechanism is used to drive the spiral cutting blade to rotate.

[0009] The cutting assembly includes a straight cutting blade, with a first mounting rod and a second mounting rod respectively provided at both ends of the straight cutting blade. The first mounting rod is rotatably inserted into the spiral cutting blade, and the axis of the first mounting rod coincides with the axis of the spiral cutting blade. A locking block at one end of the first mounting rod is rotatably locked into the spiral cutting blade. The second mounting rod is inserted into the shielding cylinder. An anti-drop support plate is provided on the straight cutting blade, and a control groove is opened on one side of the straight cutting blade. After the spiral cutting blade rotates to its limit position, it forms a cavity with the anti-drop support plate to accommodate the sample.

[0010] Preferably, the operating mechanism includes a pull wire disposed inside the sampling tube. A pull assembly is disposed inside the mounting housing and connected to the pull wire. The pull assembly is used to pull one end of the pull wire, causing it to move inside the sampling tube. The other end of the pull wire is provided with two sets of branch lines. Two sets of rotatable first reels are disposed inside the sampling tube. One end of each of the two sets of branch lines is wound around the two sets of first reels and fixedly connected to the connecting seat on the first reels. One end of each first reel is provided with a guide rod connected by a reversing assembly. During the rotation of the first reel along its axis under the action of the pull assembly, the guide rod is controlled to rotate along its axis by the reversing assembly. One end of the guide rod is provided with a slidably connected connecting sleeve. The connecting sleeve is elastically connected to the sampling tube, allowing the connecting sleeve to extend and retract at one end of the sampling tube.

[0011] Preferably, the pulling assembly includes a second thread pulley, which is disposed between the first mounting sleeves inside the two sets of mounting housings via a rotating shaft. The second thread pulley can rotate along its axis, and one end of the pulling line is fixedly connected to the outer circular surface of the second thread pulley. An operating frame is provided at the bottom of the second thread pulley, and the operating frame is movably disposed in a through groove opened at the bottom of the mounting housing. A handle is provided at the bottom of the mounting housing.

[0012] Preferably, the traction assembly further includes an arc-shaped sleeve fixedly disposed at one end of the operating frame, a baffle is disposed inside the mounting shell, an arc-shaped rod is disposed at the bottom of the baffle, the arc-shaped rod passes through the arc-shaped sleeve, and a first return spring is sleeved on the arc-shaped rod, with the two ends of the first return spring contacting one end of the arc-shaped sleeve and the bottom surface of the baffle, respectively.

[0013] Preferably, the two sets of first reels are fixedly connected by a support shaft, and the sampling tube is provided with two sets of second mounting sleeves. The support shaft is rotatably disposed in the two sets of second mounting sleeves. A constant force spring is provided on one side of each set of first reels. One end of the constant force spring is fixedly connected to the support shaft, and the other end is fixedly connected to the card seat inside the sampling tube.

[0014] Preferably, the reversing assembly includes a first bevel gear fixedly mounted on the support shaft, the transmission rod is rotatably mounted in the support frame inside the sampling tube, and one end of the transmission rod is provided with a second bevel gear connected by a connecting column, the second bevel gear meshing with the first bevel gear.

[0015] Preferably, the outer circular surface of the guide rod is provided with two sets of positioning protrusions, and the inner side of the connecting sleeve is provided with two sets of positioning grooves. The connecting sleeve is slidably connected to the guide rod by being respectively engaged on the two sets of positioning protrusions through the two sets of positioning grooves.

[0016] Preferably, a baffle is provided at one end of the connecting sleeve, and a second return spring is fitted on the connecting sleeve, with the two ends of the second return spring contacting the baffle and the inner side of one end of the sampling tube, respectively.

[0017] Preferably, a protective tube is fitted onto the endoscope connecting tube, and one end of the protective tube is fixedly connected to the mounting shell.

[0018] Preferably, the eyepiece at one end of the operating part is located on one side of the mounting housing, and a light guide connector is provided on one side of the operating part via a light guide hose.

[0019] The present invention has the following beneficial effects:

[0020] 1. In use, this fiberoptic bronchoscope sampling device inserts one end of the endoscope objective into the patient's body through the mouth and nose. Medical personnel observe the patient's internal condition through the eyepiece and the endoscope objective, and adjust the position of the sampling device within the patient's body by controlling the movement of the sampling tube. When the sampling end is moved to the sampling position, the shielding tube moves onto the lesion tissue to be sampled. The operating mechanism controls the rotation of the spiral cutter to cut the lesion tissue. The spiral cutter, in conjunction with the straight cutter in the cutting assembly, can separate the lesion tissue from the patient. The anti-drop plate also shields the cut tissue, temporarily storing the sample in the cavity formed by the spiral cutter and the anti-drop plate, effectively preventing the sample from falling out of the patient during sampling and improving sampling efficiency.

[0021] 2. After sampling is completed and the sampling device is removed from the patient's body, the straight cutting blade is pulled by the control groove. The straight cutting blade, through the locking block, drives the spiral cutting blade to extend outside the shielding cylinder, allowing the collected sample to be collected, further improving sampling efficiency. During the rotation of the first threaded wheel controlled by the traction assembly, the constant force springs of both deform. After collecting the sample, the spiral cutting blade moves linearly along the positioning protrusion and resets under the action of the second reset spring. Releasing the traction assembly allows the first threaded wheel to reverse and reset under the reset force of the constant force spring. The operating frame in the traction assembly also resets under the action of the first reset spring, causing the second threaded wheel to reset as well. This reduces the force on the constant force spring, allowing the spiral cutting blade to rotate and reset. The sampling end is then disinfected for subsequent use. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a three-dimensional structural diagram of a fiberoptic bronchoscope sampling device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the mounting shell in a bronchoscope sampling device of the present invention;

[0025] Figure 3 This is a schematic diagram of the mounting shell in a fiberoptic bronchoscope sampling device according to the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of the sampling tube in a fiberoptic bronchoscope sampling device of the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the disassembled structure;

[0028] Figure 6 This is a schematic diagram of the spiral cutting blade in a bronchoscope sampling device of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the first thread wheel in a fiberoptic bronchoscope sampling device of the present invention;

[0030] Figure 8 This is a schematic diagram of the straight cutting blade in a bronchoscope sampling device of the present invention;

[0031] Figure 9 This is a schematic diagram of the installation structure of the straight cutting blade in a bronchoscope sampling device of the present invention.

[0032] Figure label:

[0033] 101. Operating section; 102. Light guide hose; 103. Light guide connector; 104. Eyepiece; 105. Endoscope connecting tube; 106. Endoscope objective lens; 201. Protective tube; 202. Sampling tube; 203. Second mounting sleeve; 204. Holder; 205. Support frame; 206. Shielding tube; 301. Pull cable; 302. Branch cable; 303. Second reel; 304. Operating frame; 305. Arc-shaped sleeve; 401. Mounting housing; 402. First mounting sleeve; 403. Handle; 404. Through groove; 405. Baffle; 406. 407. Arc-shaped rod; 501. First return spring; 502. Support shaft; 503. First thread pulley; 504. Connecting seat; 505. First bevel gear; 506. Constant force spring; 607. Connecting column; 608. Second bevel gear; 609. Conducting rod; 6000. Positioning protrusion; 6001. Second return spring; 701. Connecting sleeve; 702. Positioning groove; 703. Baffle; 704. Spiral cutting blade; 801. First mounting rod; 802. Locking block; 803. Straight cutting blade; 804. Control groove; 805. Second mounting rod; 806. Anti-drop support plate. Detailed Implementation

[0034] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0035] Example:

[0036] like Figures 1 to 5 As shown, the present invention provides a fiberoptic bronchoscope sampling device, including an operating part 101 and two sets of mounting shells 401. The operating part 101 is disposed within the two sets of mounting shells 401. One end of the operating part 101 is provided with an eyepiece part 104, and the other end is provided with an endoscope connecting tube 105. One end of the endoscope connecting tube 105 is provided with an endoscope objective lens 106. A light guide connecting part 103 connected to the operating part 101 via a light guide hose 102 is provided on one side of the operating part 101. In use, the endoscope objective lens 106 can be inserted into the patient's body through the patient's mouth and nose, and the patient's internal condition can be observed through the eyepiece part 104.

[0037] A sampling tube 202 is provided inside the endoscope connecting tube 105, and an operating mechanism is provided inside the mounting housing 401. The operating mechanism includes a pull wire 301 disposed inside the sampling tube 202. A pull assembly is provided inside the mounting housing 401 and connected to the pull wire 301. The pull assembly is used to pull one end of the pull wire 301, allowing it to move within the sampling tube 202. The pull assembly includes a second pulley 303, which is disposed between the first mounting sleeves 402 inside the two sets of mounting housings 401 via a rotating shaft. The second pulley 303 can rotate along its axis, and one end of the pull wire 301 is fixedly connected to the outer circular surface of the second pulley 303. An operating frame 304 is provided at the bottom of the second pulley 303, and the operating frame 304 is movably disposed within a through groove 404 opened at the bottom of the mounting housing 401. A handle 403 is provided at the bottom of the mounting housing 401. After moving the endoscope objective 106 to the sampling position, the second thread pulley 303 can be rotated at a certain angle along its axis by gripping the operating frame 304 and the handle 403. During the rotation, the second thread pulley 303 winds one end of the pull wire 301, thus controlling the movement of the pull wire 301 within the sampling tube 202. During the movement of the pull wire 301, the two sets of branch wires 302 at one end can be pulled.

[0038] The sampling tube 202 contains two sets of rotatable first reels 502. One end of each of the two sets of branch lines 302 is wound around the two sets of first reels 502 and fixedly connected to the connecting seat 503 on the first reels 502. When the branch lines 302 are controlled to move by the pulling assembly, the first reels 502 can be rotated a certain distance. Since the diameter of the second reel 303 is larger than that of the first reel 502, the second reel 303 only needs to swing a certain distance to control the rotation of the first reel 502. During the rotation of the first reel 502, the transmission rod 603 can be controlled to rotate by the reversing assembly.

[0039] like Figure 4 , 5 As shown in Figure 7, in this embodiment, the reversing assembly includes a first bevel gear 504 fixedly mounted on the support shaft 501, and a transmission rod 603 rotatably mounted within a support frame 205 inside the sampling tube 202. One end of the transmission rod 603 is provided with a second bevel gear 602 connected via a connecting post 601, and the second bevel gear 602 meshes with the first bevel gear 504. During the rotation of the first pulley 502, it drives the first bevel gear 504 on the support shaft 501 to rotate, thereby controlling the rotation of the transmission rod 603 along its axis within the support frame 205 through the meshing relationship between the second bevel gear 602 and the first bevel gear 504.

[0040] As shown in Figures 4, 5, and 6, in this embodiment, a shielding cylinder 206 is provided at one end of the sampling tube 202, and a sampling component is provided inside the shielding cylinder 206. The sampling component includes a spiral cutter 704, which is rotatably disposed inside the shielding cylinder 206 along its axis. A connecting sleeve 701 is provided at one end of the transmission rod 603, and the connecting sleeve 701 is elastically connected to the sampling tube 202, so that the connecting sleeve 701 can extend and retract at one end of the sampling tube 202. One end of the connecting sleeve 701 is fixedly connected to one end of the spiral cutter 704, and a cutting component is provided inside the shielding cylinder 206.

[0041] During the rotation of the transmission rod 603, the spiral cutting blade 704 can be controlled to rotate inside the shielding cylinder 206 by the cooperation of the two sets of positioning protrusions 604 set on the outer circular surface of the transmission rod 603 and the two sets of positioning grooves 702 opened in the connecting sleeve 701, so as to cut the diseased tissue, and the cut diseased tissue is temporarily stored inside the spiral cutting blade 704.

[0042] like Figure 5 , 8 As shown in Figure 9, in this embodiment, the cutting assembly includes a straight cutting blade 803. A first mounting rod 801 and a second mounting rod 805 are respectively provided at both ends of the straight cutting blade 803. The first mounting rod 801 is rotatably inserted into the spiral cutting blade 704, and the axis of the first mounting rod 801 coincides with the axis of the spiral cutting blade 704. A locking block 802 at one end of the first mounting rod 801 is rotatably locked into the spiral cutting blade 704. The second mounting rod 805 is inserted into the shielding cylinder 206. An anti-drop support plate 806 is provided on the straight cutting blade 803, and a control groove 804 is opened on one side of the straight cutting blade 803.

[0043] During the rotation of the spiral cutter 704, the first mounting rod 801 rotates relative to the spiral cutter 704. When the spiral cutter 704 rotates to a certain angle, its cutting end intersects with the straight cutter 803 to cut the diseased tissue, allowing the sample to be temporarily stored in the cavity formed by the spiral cutter 704 and the anti-drop support plate 806. The anti-drop support plate 806 effectively prevents the sample from falling out, avoiding secondary sampling and reducing harm to the patient. After sampling, the device is removed from the patient's body. By pulling the control slot 804 with a tool, the straight cutter 803 and the spiral cutter 704 can be moved out of the shielding cylinder 206 simultaneously, allowing the collected sample to be collected for subsequent culture and testing.

[0044] like Figure 4As shown, in this embodiment, two sets of first reels 502 are fixedly connected by a support shaft 501. Two sets of second mounting sleeves 203 are provided inside the sampling tube 202. The support shaft 501 is rotatably disposed inside the two sets of second mounting sleeves 203. A constant force spring 505 is provided on one side of each of the two sets of first reels 502. One end of the constant force spring 505 is fixedly connected to the support shaft 501, and the other end is fixedly connected to the card seat 204 inside the sampling tube 202.

[0045] When the first pulley 502 rotates under the action of the traction assembly and the traction line 301, it causes the constant force spring 505 to deform. After the device is used up, the pull on the traction line 301 can be released by releasing the operating frame 304. Thus, the two sets of first pulleys 502 can be controlled to reset under the reset capability of the constant force spring 505, which drives the spiral cutting blade 704 to reset for the next use.

[0046] like Figure 2 , 3 As shown, in this embodiment, the pulling assembly further includes an arc-shaped sleeve 305 fixedly disposed at one end of the operating frame 304. A baffle 405 is disposed inside the mounting shell 401, and an arc-shaped rod 406 is disposed at the bottom of the baffle 405. The arc-shaped rod 406 passes through the arc-shaped sleeve 305, and a first return spring 407 is sleeved on the arc-shaped rod 406. The two ends of the first return spring 407 are in contact with one end of the arc-shaped sleeve 305 and the bottom surface of the baffle 405, respectively. When the pulling assembly pulls one end of the pulling line 301 by gripping the operating frame 304 and the handle 403, the arc-shaped sleeve 305 moves on the arc-shaped rod 406, compressing the first return spring 407. After sampling is completed, when the operating frame 304 is released, the operating frame 304 can be controlled to return to its original position under the return capability of the first return spring 407, reducing the resistance of the constant force spring 505 when controlling the return of the first thread pulley 502.

[0047] By gripping the operating frame 304, the lesion site is sampled. This not only allows for stable control of the spiral cutting blade 704 to rotate and complete the sampling work, but also allows medical staff to observe the lesion in the patient's body while performing the sampling. The observation and sampling operations can be completed with one hand, making the operation simpler and more efficient, and improving the practicality of the sampling device.

[0048] like Figure 4 , 5As shown, in this embodiment, a baffle 703 is provided at one end of the connecting sleeve 701, and a second return spring 605 is fitted on the connecting sleeve 701. The two ends of the second return spring 605 are in contact with the baffle 703 and the inner side of one end of the sampling tube 202, respectively. When the straight cutting blade 803 is pulled out to collect the sample, the connecting sleeve 701 drives the baffle 703 to move and squeeze the second return spring 605. After sampling and disinfection, the control groove 804 is released, and under the action of the second return spring 605, the straight cutting blade 803 and the spiral cutting blade 704 can be retracted into the shielding cylinder 206 for the next use.

[0049] like Figure 1 , 2 As shown, in this embodiment, a protective tube 201 is fitted onto the endoscope connecting tube 105, and one end of the protective tube 201 is fixedly connected to the mounting shell 401. The protective tube 201 is provided to protect the endoscope connecting tube 105.

[0050] Specific usage and beneficial effects of the present invention:

[0051] When using this sampling device, the endoscope objective 106 is inserted into the patient's body through the patient's mouth and nose. After moving the sampling end to the area to be sampled, the second thread wheel 303 is rotated by gripping the operating frame 304 and the handle 403 to pull the traction line 301. This causes the two sets of branch lines 302 at one end of the traction line 301 to drive the first thread wheel 502 to rotate. During the rotation of the first thread wheel 502, the first thread wheel 502 drives the transmission rod 603 to rotate through the cooperation of the first bevel gear 504 and the second bevel gear 602. During the rotation of the transmission rod 603, the spiral cutter 704 can be controlled to rotate to cut and sample the diseased tissue.

[0052] During rotation, the spiral cutter 704 cuts tissue through its alternating interaction with the straight cutter 803. The cut tissue remains inside the spiral cutter 704 and is temporarily stored in conjunction with the anti-drop tray 806, effectively preventing sample drop and avoiding secondary sampling. After sampling, the device is removed from the patient's body, and by pulling the control slot 804 on one side of the straight cutter 803, both the straight cutter 803 and the spiral cutter 704 are simultaneously moved out of the shielding tube 206, allowing the collected sample to be collected for culture and analysis.

[0053] After the sample is acquired, the control slot 804 is released, and under the action of the second reset spring 605, the straight cutting blade 803 and the spiral cutting blade 704 are retracted into the shielding cylinder 206. Then, the operating frame 304 is released, and under the action of the first reset spring 407, the second thread wheel 303 is reset, and under the action of the constant force spring 505, the first thread wheel 502 is reset, thereby resetting the spiral cutting blade 704 for subsequent use.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A bronchoscope sampling device, characterized in that, include: Operating unit (101), mounting housing (401), endoscope objective (106), sampling assembly and operating mechanism; The operating part (101) is disposed inside the mounting housing (401). The operating part (101) is connected to the endoscope objective (106) through the endoscope connecting tube (105). A sampling tube (202) is disposed inside the endoscope connecting tube (105). The sampling assembly includes a spiral cutter (704), which is rotatably disposed in a shielding tube (206) at one end of the sampling tube (202) along its axis. A cutting assembly is disposed in the shielding tube (206). The operating mechanism is disposed inside the mounting housing (401), and the operating mechanism is used to drive the spiral cutting blade (704) to rotate; The cutting assembly includes a straight cutting blade (803), with a first mounting rod (801) and a second mounting rod (805) respectively provided at both ends of the straight cutting blade (803). The first mounting rod (801) is rotatably inserted into the spiral cutting blade (704), and the axis of the first mounting rod (801) coincides with the axis of the spiral cutting blade (704). A locking block (802) at one end of the first mounting rod (801) is rotatably locked into the spiral cutting blade (704). The second mounting rod (805) is inserted into the shielding cylinder (206). An anti-drop support plate (806) is provided on the straight cutting blade (803), and a control groove (804) is opened on one side of the straight cutting blade (803). After the spiral cutting blade (704) rotates to its limit position, it forms a cavity with the anti-drop support plate (806) to accommodate the sample.

2. The fiberoptic bronchoscope sampling device according to claim 1, characterized in that, The operating mechanism includes a pull wire (301) disposed within the sampling tube (202). A pull assembly is disposed within the mounting housing (401) and connected to the pull wire (301). The pull assembly is used to pull one end of the pull wire (301) to move within the sampling tube (202). The other end of the pull wire (301) is provided with two sets of branch wires (302). Two sets of rotatable first reels (502) are disposed within the sampling tube (202). One end of each set of branch wires (302) is wound around one of the two sets of first reels (502). It is fixedly connected to the connecting seat (503) on the first spool (502). One end of the first spool (502) is provided with a guide rod (603) connected by a reversing component. During the rotation of the first spool (502) along its axis under the action of the traction component, the guide rod (603) is controlled to rotate along its axis by the reversing component. One end of the guide rod (603) is provided with a sliding connecting sleeve (701). The connecting sleeve (701) is elastically connected to the sampling tube (202), so that the connecting sleeve (701) can move in and out at one end of the sampling tube (202).

3. The fiberoptic bronchoscope sampling device according to claim 2, characterized in that, The pulling assembly includes a second thread pulley (303), which is disposed between the first mounting sleeves (402) inside the two sets of mounting shells (401) via a rotating shaft. The second thread pulley (303) can rotate along its axis. One end of the pulling line (301) is fixedly connected to the outer circular surface of the second thread pulley (303). An operating frame (304) is provided at the bottom of the second thread pulley (303). The operating frame (304) is movably disposed in a through groove (404) opened at the bottom of the mounting shell (401). A handle (403) is provided at the bottom of the mounting shell (401).

4. The fiberoptic bronchoscope sampling device according to claim 3, characterized in that, The traction assembly also includes an arc-shaped sleeve (305) fixedly installed at one end of the operating frame (304). A baffle (405) is provided inside the mounting shell (401). An arc-shaped rod (406) is provided at the bottom of the baffle (405). The arc-shaped rod (406) passes through the arc-shaped sleeve (305). A first return spring (407) is sleeved on the arc-shaped rod (406). The two ends of the first return spring (407) are in contact with one end of the arc-shaped sleeve (305) and the bottom surface of the baffle (405), respectively.

5. The fiberoptic bronchoscope sampling device according to claim 2, characterized in that, Two sets of first thread reels (502) are fixedly connected by a support shaft (501). Two sets of second mounting sleeves (203) are provided inside the sampling tube (202). The support shaft (501) is rotatably installed inside the two sets of second mounting sleeves (203). A constant force spring (505) is provided on one side of each of the two sets of first thread reels (502). One end of the constant force spring (505) is fixedly connected to the support shaft (501), and the other end is fixedly connected to the card seat (204) inside the sampling tube (202).

6. The fiberoptic bronchoscope sampling device according to claim 5, characterized in that, The reversing assembly includes a first bevel gear (504) fixedly mounted on the support shaft (501), and a guide rod (603) rotatably mounted in a support frame (205) inside the sampling tube (202). One end of the guide rod (603) is provided with a second bevel gear (602) connected by a connecting column (601), and the second bevel gear (602) meshes with the first bevel gear (504).

7. The fiberoptic bronchoscope sampling device according to claim 2, characterized in that, The outer surface of the guide rod (603) is provided with two sets of positioning protrusions (604), and the inner side of the connecting sleeve (701) is provided with two sets of positioning grooves (702). The connecting sleeve (701) is respectively engaged on the two sets of positioning protrusions (604) through the two sets of positioning grooves (702) and slidably connected to the guide rod (603).

8. The fiberoptic bronchoscope sampling device according to claim 2, characterized in that, One end of the connecting sleeve (701) is provided with a baffle (703), and a second return spring (605) is sleeved on the connecting sleeve (701). The two ends of the second return spring (605) are in contact with the baffle (703) and the inner side of one end of the sampling tube (202), respectively.

9. The fiberoptic bronchoscope sampling device according to claim 1, characterized in that, A protective tube (201) is fitted onto the endoscope connecting tube (105), and one end of the protective tube (201) is fixedly connected to the mounting shell (401).

10. The fiberoptic bronchoscope sampling device according to claim 1, characterized in that, The eyepiece (104) at one end of the operation unit (101) is disposed on one side of the mounting housing (401), and a light guide connector (103) is disposed on one side of the operation unit (101) and connected by a light guide hose (102).

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