Positioning device for middle lens of bronchoscope

Abstract

The utility model relates to a positioning device for a middle lens of a bronchoscope, which belongs to the technical field of medical instruments and comprises a sheathing canal component, a positioning component and a positioning component. The main body is provided with a through hole and a connecting part, the guide sheath tube is arranged in the through hole in a penetrating manner, a connecting seat is arranged at one end, far away from the main body, of the guide sheath tube, and limiting holes are formed in two ends of the connecting seat; a first clamping block is arranged at the head end of the telescopic rod, and the head end of the telescopic rod is connected with the tail end of the main body through a first connecting piece; the first connecting piece comprises a knob seat; the knob seat is provided with a connection matching part matched with the connection part and a first positioning hole matched with the first clamping block; the head end of the endoscope-in-endoscope assembly is connected with the tail end of the telescopic rod through the connecting base, the endoscope-in-endoscope assembly comprises a signal line and a camera, the signal line extends into the guiding sheath tube, and the camera is located at the head end of the signal line.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a positioning device for a bronchoscope. Background Art

[0002] Currently, bronchoscopy is one of the important diagnostic and treatment methods for respiratory diseases. It is widely used in the diagnosis of tracheal and bronchial lesions, and is also widely used in the treatment of sputum crusts, foreign bodies, and benign and malignant stenosis in the trachea and bronchi. Navigation bronchoscopes use navigation technology to perform minimally invasive exploration and biopsy of peripheral lung lesions.

[0003] Existing navigation bronchoscope technology is usually achieved by installing a camera at the front end of the bronchoscope. However, the length and angle of the bronchoscope cannot be flexibly adjusted, and due to its large diameter, it is impossible to enter thinner bronchial branches for inspection. The problem of entering thinner bronchial branches can be solved by adding a positioning device to the bronchoscope. The positioning device usually includes structures such as a sheath and a guide wire. The coordination between the sheath and the guide wire requires a high level of doctor's skills. There is a risk of loosening or falling off during use. In addition, the human airway structure is complex, and the slightest carelessness can cause serious trauma to the patient. There are technical problems such as difficulty in controlling the positioning device and unstable connection. In addition, the positioning device of the existing navigation bronchoscope lacks real-time imaging function. Designing and developing a positioning device with real-time imaging function will help improve the accuracy of navigation bronchoscope positioning and operation. Utility Model Content

[0004] In view of the above analysis, an embodiment of the utility model aims to provide a positioning device for a bronchoscope, so as to solve one or more of the above problems existing in the prior art.

[0005] The purpose of the utility model is achieved in this way:

[0006] Provided is a bronchoscope positioning device, comprising:

[0007] The sheath tube assembly comprises a main body and a guide sheath tube; the main body is provided with a through hole and a connecting portion, the guide sheath tube is inserted into the through hole, the end of the guide sheath tube away from the main body is provided with a connecting seat, and both ends of the connecting seat are provided with limiting holes;

[0008] A telescopic rod, a first clamping block is provided at the head end of the telescopic rod, and the head end of the telescopic rod is connected to the end of the main body through a first connecting member; the first connecting member includes a knob seat; the knob seat is provided with a connecting matching portion adapted to the connecting portion, and a first positioning hole adapted to the first clamping block;

[0009] The mirror-in-mirror assembly has its head end connected to the end of the telescopic rod through the connecting seat. The mirror-in-mirror assembly includes a signal line and a camera. The signal line extends into the guide sheath, and the camera is located at the head end of the signal line.

[0010] Furthermore, the first connecting member also includes a sleeve seat, which is located near one end of the telescopic rod and is provided with a second clamping block; the telescopic rod is provided with a third positioning hole adapted to the second clamping block.

[0011] Furthermore, the first connecting member also includes a knob, and the knob is sleeved on the knob seat and is provided with a second positioning hole and a limiting ring.

[0012] Furthermore, the sheath tube assembly also includes a pressing block, which is located in the knob seat and is configured to cooperate with the knob to press the sheath tube assembly and the telescopic rod.

[0013] Furthermore, the knob seat also includes a positioning groove, and the positioning groove and the second positioning hole are connected by bolts, and are configured to drive the knob seat to rotate synchronously when the knob is rotated.

[0014] Furthermore, the sheath tube assembly also includes a locking head, and the locking head is located in the pressing block.

[0015] Furthermore, the mirror-in-mirror assembly also includes a shell, and a first buckle adapted to the limiting hole is provided at one end of the shell close to the connecting seat.

[0016] Furthermore, the end of the telescopic rod is fixedly connected to a connecting valve, and the end of the telescopic rod is fixedly connected to a connecting valve having a second buckle adapted to the limiting hole.

[0017] Furthermore, a second connecting member is provided at the head end of the main body, and the second connecting member includes a fixing seat, and the fixing seat is respectively connected to the bronchoscope and the main body.

[0018] Furthermore, the fixing seat is connected to the main body via a connecting piece.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] a) The positioning device for the bronchoscope in-scope provided by the utility model stably connects the sheath assembly and the telescopic rod through the first positioning hole on the knob seat and the first clamping block on the telescopic rod, as well as the connecting fitting part on the knob seat and the connecting part on the main body; connects the telescopic rod and the scope-in-scope assembly through the connecting seat at the end of the guide sheath; thereby achieving a stable connection between the sheath assembly, the telescopic rod and the scope-in-scope assembly.

[0021] b) The positioning device of the bronchoscope provided by the utility model can flexibly adjust the position and angle of the guide sheath and the camera through the cooperation of the telescopic rod and the mirror-in-mirror assembly, thereby facilitating navigation and positioning of the lesion. The bronchus that can be explored is larger, deeper, and wider, and it is convenient to control the guide sheath to enter deeper bronchi under the guidance of the real-time imaging of the bronchoscope, directly observe the status of the distal bronchi and peripheral lung lesions, and locate and sample the lesions, providing real-time imaging guidance for clinical operations.

[0022] c) The positioning device of the bronchoscope provided by the utility model has a knob design that makes it easy for the operator to fix and release the telescopic rod, so as to adjust and fix the position and angle of the signal line and the camera, which is simple to operate and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the structure of the positioning device of the bronchoscope provided by the utility model;

[0025] Figure 2 A schematic diagram of the structure of the connection between the positioning device provided by the utility model and the bronchoscope;

[0026] Figure 3 A schematic diagram of the structure of the sheath tube assembly provided by the utility model;

[0027] Figure 4 A schematic diagram of the structure of the first connecting member provided by the utility model;

[0028] Figure 5 A schematic diagram of the structure of the second connecting member provided by the utility model;

[0029] Figure 6 A schematic diagram of the structure of the second connecting member provided by the utility model;

[0030] Figure 7 A schematic diagram of the structure of the telescopic rod provided by the utility model;

[0031] Figure 8 A schematic diagram of the structure of the mirror-in-mirror assembly provided by the utility model;

[0032] Fig. 9 The utility model is a cross-sectional schematic diagram of a positioning device for a bronchoscope.

[0033] Reference numerals:

[0034] 1-sheath assembly; 11-main body; 111-connecting part; 12-guide sheath; 121-connecting seat; 121a-limiting hole; 13-pressing block; 14-locking head; 15-second connecting piece; 151-fixing seat; 151a-connecting plate; 2-telescopic rod; 21-first clamping block; 22-first connecting piece; 221-knob seat; 221a-connecting matching part; 221b-first positioning hole; 221c-positioning groove; 222-sleeve seat; 222a-second clamping block; 223-knob; 223a-second positioning hole; 223b-limiting ring; 23-third positioning hole; 24-connecting valve; 241-second buckle; 3-mirror-in-mirror assembly; 32-signal line; 33-camera; 34-housing; 341-first buckle; 4-bronchoscope. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments disclosed in this disclosure can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0037] Example 1

[0038] A specific embodiment of the utility model is as follows Figure 1-9 As shown, a positioning device for a bronchoscope is disclosed, comprising:

[0039] The sheath assembly 1 comprises a main body 11 and a guide sheath 12; the main body 11 is provided with a through hole and a connecting portion 111; the guide sheath 12 is inserted into the through hole, and a connecting seat 121 is provided at one end of the guide sheath 12 away from the main body 11, and limiting holes 121a are provided at both ends of the connecting seat 121;

[0040] The telescopic rod 2 has a first clamping block 21 at its head end, and the head end of the telescopic rod 2 is connected to the end of the main body 11 through a first connecting member 22; the first connecting member 22 includes a knob seat 221; the knob seat 221 has a connecting matching portion 221a adapted to the connecting portion 111, and a first positioning hole 221b adapted to the first clamping block 21;

[0041] The mirror-in-mirror assembly 3 has its head end connected to the end of the telescopic rod 2 through the connecting seat 121 . The mirror-in-mirror assembly 3 includes a signal line 32 and a camera 33 . The signal line 32 extends into the guide sheath 12 , and the camera 33 is located at the head end of the signal line 32 .

[0042] During implementation, firstly, the first block 21 of the telescopic rod 2 is inserted into the first positioning hole 221b of the knob seat 221, and the connecting fitting portion 221a is connected to the connecting portion 111 of the main body 11, so as to connect the sheath tube assembly 1 and the telescopic rod 2 by means of the knob seat 221; then, the two ends of the connecting seat 121 are respectively connected to the end of the telescopic rod 2 and the head end of the mirror-in-mirror assembly 3, so as to complete the connection between the telescopic rod 2 and the mirror-in-mirror assembly 3; then, the telescopic rod 2 is in a fully extended state, and then the main body 1 in the positioning device is 1 is connected to the bronchoscope, so that the guide sheath 12 passes through the inside of the bronchoscope to complete the assembly of the bronchoscope-in-scope; when in use, the free end of the bronchoscope is placed in the patient's bronchus, and the length of the guide sheath 12 and the signal line 32 extending out of the bronchoscope is adjusted according to actual needs, that is, the position of the camera 33 is adjusted. After the position adjustment is completed, the angle of the camera 33 is adjusted by rotating the end of the mirror-in-scope assembly 3 to observe the lesion site in the patient's bronchus.

[0043] It should be noted that the head end of the overall positioning device refers to the end of the guide sheath extending into the bronchoscope, and the end end refers to the end of the mirror-in-mirror assembly away from the camera, and each component is connected in sequence at this spatial position.

[0044] Exemplarily, the connecting portion 111 may be an external thread structure or a snap-fit ​​structure, and the connecting fitting portion 221a may be a matching internal thread or a positioning hole to stably connect the sheath tube assembly and the telescopic rod through the first connecting piece.

[0045] Compared with the prior art, the positioning device for the endoscope of the bronchoscope provided in this embodiment stably connects the sheath assembly and the telescopic rod through the first positioning hole on the knob seat and the first block on the telescopic rod, as well as the connecting fitting portion on the knob seat and the connecting portion on the main body; the telescopic rod and the endoscope assembly are connected through the connecting seat at the end of the guide sheath; thereby achieving a stable connection between the sheath assembly, the telescopic rod and the endoscope assembly.

[0046] On the other hand, through the cooperation of the telescopic rod and the mirror-in-mirror assembly, the position and angle of the camera can be flexibly adjusted, which facilitates navigation and positioning of the lesion. The bronchus that can be explored is larger, deeper, and wider, which makes it easier to control the guide sheath to enter deeper bronchi under the real-time imaging guidance of the bronchoscope-in-mirror, directly observe the status of the distal bronchi and peripheral lung lesions, and locate and sample the lesions, providing real-time imaging guidance for clinical operations. The design of the knob makes it easy for the operator to fix and release the telescopic rod, so as to adjust and fix the position and angle of the signal line and the camera. It is simple to operate and easy to maintain.

[0047] In some embodiments, the guide sheath 12 is composed of a flexible section, a semi-rigid section and a rigid section. The flexible section is arranged at an end away from the main body 11 to prevent trauma to the patient; the semi-rigid section is arranged between the flexible section and the rigid section to facilitate the bronchoscope to enter the complex bronchial environment; the rigid section is arranged at an end close to the main body 11 to provide support for the guide sheath 12.

[0048] In some embodiments, the signal line 32 is composed of a flexible section and a rigid section, the camera 33 is disposed at the front end of the flexible section, and the signal line 32 is passed through the guide sheath 12 and extends into the bronchoscope to observe the condition of the patient's bronchi.

[0049] Exemplarily, the materials of the guide sheath 12 and the signal line 32 include: the outermost layer is a barium sulfate coating, which can increase the development to cooperate with the detection of the position of the bronchoscope in the patient's body during X-ray surgery; the second layer is a pebax layer, without adding a plasticizer, to obtain guide sheaths and signal lines with different flexibility and hardness; the third layer is a metal braided mesh to increase the supporting force; the innermost layer is a ptfe layer, which can improve lubricity and corrosion resistance.

[0050] In this embodiment, the first connecting member 22 further includes a sleeve seat 222, which is located at one end close to the telescopic rod 2 and is provided with a second clamping block 222a; the telescopic rod 2 is provided with a third positioning hole 23 adapted to the second clamping block 222a.

[0051] Specifically, the sleeve seat 222 is used to connect the telescopic rod 2. A third positioning hole 23 is provided on the outer wall of the telescopic rod 2. The sleeve seat 222 is provided with a second clamping block 222a. The sleeve seat 222 has a through hole matching the diameter of the guide sheath 12, so that the guide sheath 12 can extend to the end of the telescopic rod 2, so that the signal line 32 is as completely located as possible in the guide sheath 12, to prevent the signal line 32 from shaking when it is too long, which makes it difficult for the camera to stably observe the patient's bronchus.

[0052] In this embodiment, the first connecting member 22 further includes a knob 223 . The knob 223 is sleeved on the knob seat 221 and is provided with a second positioning hole 223 a and a limiting ring 223 b .

[0053] Specifically, the knob 223 is configured to fix or release the length of the telescopic rod 2, the angle of the signal line 32 and the camera 33 by rotation, so that the user can send the signal line 32 and the camera 33 to a specific position to observe the lesion site; the limit ring 223b is configured to limit the movement of the knob seat 221 when tightened to prevent the connection between the sheath assembly 1 and the telescopic rod 2 from loosening.

[0054] In this embodiment, the sheath assembly 1 further includes a pressing block 13 , which is located in the knob seat 221 and is configured to cooperate with the knob 223 to press the sheath assembly 1 and the telescopic rod 2 .

[0055] Specifically, the pressing block 13 is disposed in the knob seat 221 . When the knob 223 is rotated, the pressing block 13 is subjected to force to generate pressure, thereby pressing other components in the knob seat 221 .

[0056] In this embodiment, the knob seat 221 further includes a positioning groove 221c. The positioning groove 221c and the second positioning hole 223a are connected by bolts, and are configured to drive the knob seat 221 to rotate synchronously when the knob 223 is rotated.

[0057] Specifically, the positioning groove 221c is designed obliquely along the outer wall of the knob seat 221, and the sizes and spatial positions of the positioning groove 221c and the second positioning hole 223a are adapted to each other. After the bolt is passed through, the knob 223 and the knob seat 221 are connected; when in use, only the knob 223 needs to be rotated to drive the knob seat 221 to rotate synchronously, thereby stably connecting the sheath tube assembly and the telescopic rod through the first connecting piece.

[0058] In this embodiment, the sheath tube assembly 1 further includes a locking head 14 , and the locking head 14 is located inside the pressing block 13 .

[0059] Exemplarily, the material of the locking head 14 includes silicone, plastic, etc. When the knob 223 is rotated and the connecting mating portion of the knob seat 221 is connected to the connecting portion on the main body 11, the locking head 14 is deformed by mechanical stress, pressing the guide sheath 12 to prevent the guide sheath 12 from loosening or falling off, and is suitable for guide sheaths of different sizes.

[0060] In this embodiment, the mirror-in-mirror assembly 3 further includes a housing 34 , and an end of the housing 34 close to the connecting seat 121 is provided with a first buckle 341 adapted to the limiting hole 121 a .

[0061] Specifically, a detection circuit is provided inside the mirror-in-mirror assembly 3 to obtain an image of the patient's body at the camera, and is connected to a display device via an external signal line to transmit the image to the display device in real time. The housing 34 is used to protect the circuit and is connected to the connecting socket 121 via a first buckle 341.

[0062] In some embodiments, the axis at the end of the shell 34 of the mirror-in-mirror assembly is also provided with a sheet structure that rotates coaxially with the signal line 32 and has a pointer; the circumferential periphery of the sheet structure is also provided with an angle indicator mark; at the same time, a corresponding angle indicator mark is also provided on the inner wall of the front end of the bronchoscope 4; during use, when the signal line 32 is inserted into the guide sheath 12 and is synchronously bent or rotated, the sheet structure at the end of the shell 34 rotates the same angle, and the angle of the signal line 32 and the guide sheath 12 in the bronchus is judged according to the relative position of the pointer pointing to the angle indicator mark, which is convenient for the user to judge the orientation of the current field of view and perform accurate inspection of the patient's body.

[0063] In some embodiments, the position of the bronchoscope in the bronchus, lesion identification, and auxiliary diagnosis can also be identified through images captured by the camera.

[0064] For example, any of the following methods may be used:

[0065] (I) Image feature matching: It is necessary to establish an image database containing different bronchial branching sites, extract features from the captured images, and use feature matching algorithms such as SIFT and SURF to match them with the images in the database;

[0066] (II) Deep learning and image classification: First, a dataset containing a large number of bronchial branch images is collected and annotated; then, the dataset is used to train a deep learning model; and then a classification model is trained to classify bronchoscopic images into specific bronchial branches.

[0067] In some embodiments, the front end of the bronchoscope 4 is also provided with a camera, which is configured to provide real-time images and identify the current position of the guide sheath 12 in the bronchus, so that the operator can correctly send the guide sheath 12 into thinner and deeper bronchi and lung areas that cannot be reached by conventional bronchoscopes under the guidance of real-time images until reaching the target bronchus or lesion.

[0068] In some embodiments, corresponding scales are provided on the inner and outer walls of the guide sheath 12, and the guide sheath 12 is configured to observe the location of the lesion through the camera 33 while determining the actual location of the lesion in combination with the camera 33 and the current position of the bronchoscope 4, so as to assist the doctor in performing a biopsy operation using a bronchoscope and accurately guide the biopsy forceps to sample the lesion.

[0069] The bronchoscope in the bronchoscope provided in this embodiment can also be used to cooperate in sampling lesions in the patient's bronchi. The specific operation method is: after observing the lesions in the bronchus and determining their actual positions, release the connection between the first buckle 341 and the connecting seat 121, that is, the connection between the telescopic rod 2 and the mirror in the mirror assembly 3. After pulling out the mirror in the mirror assembly 3, connect the device for sampling biopsy to the connecting seat 121, such as a biopsy forceps, and extend it from the inside of the guide sheath 12 to the position of the lesion to perform sampling biopsy.

[0070] In certain embodiments, after the biopsy is completed, the bronchoscope provided in this embodiment can also be used for interventional treatment. The specific operation method is: remove the sampling biopsy device, connect the treatment device to the connecting seat 121, and treat the lesion site.

[0071] In this embodiment, a connecting valve 24 is fixedly connected to the end of the telescopic rod 2, and the connecting valve 24 has a second buckle 241 adapted to the limiting hole 121a.

[0072] Specifically, the first buckle 341 on the housing 34 and the second buckle 241 on the connecting valve 24 are respectively inserted into the limiting holes 121a at both ends of the connecting seat 121 to achieve a stable connection between the telescopic rod 2 and the mirror-in-mirror assembly 3 through the connecting seat 121.

[0073] In this embodiment, a second connecting member 15 is disposed at the front end of the main body 11 . The second connecting member 15 includes a fixing seat 151 . The fixing seat 151 is connected to the bronchoscope 4 and the main body 11 , respectively.

[0074] Specifically, the second connecting member 15 is configured to connect the bronchoscope 4 and the main body 11 via a fixing seat 151 .

[0075] In certain embodiments, a connecting sleeve is provided at one end of the bronchoscope 4 connected to the fixing seat 151 .

[0076] Exemplarily, the connecting sleeve is composed of at least two connecting tubes whose outer walls are provided with annular limiting components, so that when the bronchoscope is connected to the main body 11, a self-locking state is formed to prevent the bronchoscope from loosening or falling off during use.

[0077] In this embodiment, the fixing seat 151 is connected to the main body 11 via a connecting piece 151 a.

[0078] Exemplarily, the fixing seat 151 is an annular structure with a connecting piece 151a, which is used to connect the main body 11; a positioning hole matching the connecting piece 151a is provided on the main body 11, and a bolt is passed through the connecting piece 151a and the positioning hole to connect the fixing seat 151 and the main body 11, thereby connecting the second connecting member 15 and the sheath assembly 1.

[0079] In some embodiments, a protective shell is also provided on the main body 11. The size of the protective shell is the same or similar to that of the main body 11. A plurality of limit strips are provided on the inner wall, and an open groove is provided on the outer wall for the connecting piece 151a to be inserted. The open groove is provided with an opening for the bolt to pass through so as to fix the protective shell and the main body 11.

[0080] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A bronchoscope positioning device, characterized in that: Includes the following connected in sequence: A sheath tube assembly (1) comprises a main body (11) and a guide sheath tube (12); the main body (11) is provided with a through hole and a connecting portion (111), the guide sheath tube (12) is inserted into the through hole, the end of the guide sheath tube (12) away from the main body (11) is provided with a connecting seat (121), and both ends of the connecting seat (121) are provided with limiting holes (121a); A telescopic rod (2), the head end of which is provided with a first clamping block (21); the head end of the telescopic rod (2) is connected to the end of the main body (11) via a first connecting member (22); the first connecting member (22) comprises a knob seat (221); the knob seat (221) is provided with a connecting matching portion (221a) adapted to the connecting portion (111), and a first positioning hole (221b) adapted to the first clamping block (21); A mirror-in-mirror assembly (3) has a head end connected to the end of the telescopic rod (2) via the connecting seat (121), and the mirror-in-mirror assembly (3) comprises a signal line (32) and a camera (33), wherein the signal line (32) extends into the guide sheath (12), and the camera (33) is located at the head end of the signal line (32).

2. The bronchoscope positioning device according to claim 1, characterized in that: The first connecting member (22) further comprises a sleeve seat (222), wherein the sleeve seat (222) is located at one end close to the telescopic rod (2) and is provided with a second clamping block (222a); the telescopic rod (2) is provided with a third positioning hole (23) adapted to the second clamping block (222a).

3. The bronchoscope positioning device according to claim 1, characterized in that: The first connecting member (22) further comprises a knob (223), wherein the knob (223) is sleeved on the knob seat (221) and is provided with a second positioning hole (223a) and a limiting ring (223b).

4. The bronchoscope positioning device according to claim 3, characterized in that: The sheath tube assembly (1) further comprises a pressing block (13), wherein the pressing block (13) is located in the knob seat (221) and is configured to cooperate with the knob (223) to press the sheath tube assembly (1) and the telescopic rod (2).

5. The bronchoscope positioning device according to claim 3, characterized in that: The knob seat (221) further comprises a positioning groove (221c), and the positioning groove (221c) and the second positioning hole (223a) are connected by bolts, and are configured to drive the knob seat (221) to rotate synchronously when the knob (223) is rotated.

6. The bronchoscope positioning device according to claim 4, characterized in that: The sheath tube assembly (1) further comprises a locking head (14), wherein the locking head (14) is located inside the pressing block (13).

7. The bronchoscope positioning device according to claim 1, characterized in that: The mirror-in-mirror assembly (3) further comprises a housing (34), and a first buckle (341) adapted to the limiting hole (121a) is provided at one end of the housing (34) close to the connecting seat (121).

8. The bronchoscope positioning device according to claim 1, characterized in that: The end of the telescopic rod (2) is fixedly connected to a connecting valve (24), and the connecting valve (24) has a second buckle (241) adapted to the limiting hole (121a).

9. The bronchoscope positioning device according to claim 1, characterized in that: A second connecting member (15) is provided at the head end of the main body (11), and the second connecting member (15) comprises a fixing seat (151), and the fixing seat (151) is respectively connected to the bronchoscope (4) and the main body (11).

10. The bronchoscope positioning device according to claim 9, characterized in that: The fixing seat (151) is connected to the main body (11) via a connecting piece (151a).

Images