CN115702773A

CN115702773A - Endoscope tube assembly of endoscope and endoscope

Info

Publication number: CN115702773A
Application number: CN202110891816.8A
Authority: CN
Inventors: 徐雄; 刘忠辉; 李大庆
Original assignee: Changsha Maggil Medical Technology Co ltd
Current assignee: Changsha Maggil Medical Technology Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-02-17

Abstract

The application provides a tube assembly of an endoscope and the endoscope, wherein the tube assembly comprises a tube main body, at least two pull ropes and an illuminating piece arranged in the tube main body; a part of the tube section at the far end of the tube main body is a snake bone tube, a video channel which is used for being in plug-in fit with a video tube of an endoscope is arranged in the tube main body, and the far end of the video channel is a transparent closed end; the far ends of the traction ropes are connected with the snake bone canal, and the near ends of the traction ropes penetrate out of the near end of the endoscope tube main body; the illumination component emits light rays which penetrate through the far end of the lens tube main body to project the light rays to the visual field of the visual tube. The endoscope of this application embodiment, separately set up image tube and mirror tube subassembly, and will be used for crooked snake bone pipe and haulage rope integration on the mirror tube subassembly, not only be convenient for crooked but also be convenient for reduce the size of mirror tube subassembly, mirror tube subassembly compact structure.

Description

Endoscope tube assembly of endoscope and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to an endoscope tube assembly of an endoscope and the endoscope.

Background

Reusable endoscopes directly contact the tissues of the patient's body, so stringent soaking disinfection is required, and the disinfection operation is time-consuming, relatively complex in procedure, and correspondingly, costly. In addition, a working channel is arranged in part of the endoscope, liquid medicine can be injected, liquid can be sucked and surgical instruments and the like can be placed through the working channel during clinical application, the working channel is long and narrow, the disinfection difficulty is high, and certain cross infection risk also exists after disinfection.

In particular, the end of the working channel of a part of the endoscope needs to be open, so that it is not possible to additionally sheath the endoscope directly outside the tube of the endoscope with a disposable protective sheath.

Disclosure of Invention

In view of this, it is desirable to provide a tube assembly of an endoscope and an endoscope, in which the tube assembly is used as a disposable consumable, the endoscope used in cooperation therewith is used as a reusable apparatus, the endoscope used in cooperation does not directly contact with the tissue of a patient during an operation, immersion sterilization is not needed after the operation, and the sterilization level and cost can be reduced.

To achieve the above object, an embodiment of the present application provides an endoscope tube assembly of an endoscope, including:

the endoscope comprises an endoscope tube main body, wherein a part of tube section at the far end of the endoscope tube main body is a snake bone tube, a video channel which is used for being in plug-in fit with a video tube of an endoscope is arranged in the endoscope tube main body, and the far end of the video channel is a transparent closed end;

the snake bone canal is provided with at least two traction ropes for driving the snake bone canal to bend or reset, the distal end of each traction rope is connected with the snake bone canal, and the proximal end of each traction rope penetrates out of the proximal end of the endoscope canal main body;

the lighting piece is arranged in the lens tube main body, and light rays emitted by the lighting piece penetrate through the far end of the lens tube main body so as to project light rays to the visual field of the image tube.

In some embodiments, the distal end of the visualization channel is disposed in blocking relation to the illuminator.

In some embodiments, a light guide channel is disposed in the main body of the lens tube, and the illuminating element is a plastic optical fiber inserted into the light guide channel and extending from the proximal end of the main body of the lens tube to the distal end of the main body of the lens tube.

In some embodiments, the illuminating member includes a light emitter provided at the distal end of the tube main body, and an electric wire extending from the distal end of the tube main body to the proximal end of the tube main body and passing out from the proximal end of the tube main body.

In some embodiments, a working channel isolated from the visual channel is arranged in the main body of the lens tube, and the distal end of the working channel is open.

In some embodiments, the main body of the endoscope comprises a first tube, the snake bone tube connected to the distal end of the first tube, and a working tube inserted into the first tube and the snake bone tube and extending from the proximal end of the first tube to the distal end of the snake bone tube, wherein the space in the working tube is the working channel.

In some embodiments, the far end of the video channel and the working tube are arranged along the diameter direction of the snake bone tube, the inner wall of the far end of the snake bone tube is provided with two arc-shaped convex ribs which are arranged towards the convex direction of the working tube at intervals, the two arc-shaped convex ribs are arranged towards one end of the working tube at intervals, and the video channel is located in a space surrounded by the two arc-shaped convex ribs.

In some embodiments, a portion of the pull-cord is disposed through a wall of the snake and another portion of the pull-cord is located in a space within the first tube.

In some embodiments, the scope tube assembly includes a vision cannula disposed through and extending from the proximal end of the first tube to the distal end of the first tube, the space within the vision cannula and the space within the snake collectively defining the vision channel.

In some embodiments, the distal end of the snake is open, and the tube assembly comprises a light-transmissive end cap provided with a through hole communicating with the working channel, the end cap being connected to the snake and covering the opening of the snake outside the working channel.

In some embodiments, the illuminating element includes a light emitter and an electric wire, the electric wire extends from the distal end of the lens tube main body to the proximal end of the lens tube main body and passes out of the proximal end of the lens tube main body, the end cap is provided with a groove, and the light emitter is embedded in the groove.

In some embodiments, the scope tube assembly includes an outer coating covering an outer surface of the snake tube and covering an interface of the snake tube and the first tube.

The embodiment of the application also provides an endoscope, which comprises a display, an image tube, an operation part and any one of the tube components, wherein the image tube is electrically connected with the display; the near end of the video tube is arranged in the operating part, the operating part is provided with a driving mechanism, and the video tube can be inserted into the video channel in a pluggable manner; the driving mechanism is connected with each traction rope to drive the snake bone pipe to bend or reset.

The endoscope of this application embodiment, separately set up video tube and mirror tube subassembly, and will be used for crooked snake bone pipe and haulage rope integration on the mirror tube subassembly, not only be convenient for crooked but also be convenient for reduce the size of mirror tube subassembly, mirror tube subassembly compact structure. Specifically, the snake bone structure is integrated on the main body of the endoscope tube to form the snake bone tube which is used as a part of the tube component, so that the snake bone tube can be ensured to have proper outer diameter dimension, and the snake bone tube has better structural strength and bending performance. In addition, because the image tube only needs to transmit the image collected by the image sensor, the size of the image tube can be made small, and therefore, under the condition that the lens tube component can be used for one time, the outer diameter of the lens tube component can be kept relatively small.

Drawings

FIG. 1 is a schematic structural view of an endoscope according to an embodiment of the present application;

FIG. 2 is a partially exploded schematic view of the structure shown in FIG. 1;

FIG. 3 is an exploded view of the mirror tube assembly of FIG. 2;

FIG. 4 is a schematic structural view of an end cap according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of the mirror tube assembly of FIG. 1;

FIG. 6 is an enlarged partial view of FIG. 5 at F;

FIG. 7 is an enlarged partial view of FIG. 5 at G;

FIG. 8 is a cross-sectional view from another perspective of the mirror tube assembly of FIG. 1;

FIG. 9 is an enlarged partial schematic view at H of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 8 at I;

FIG. 11 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 1;

FIG. 12 is a cross-sectional view taken along the line B-B in FIG. 1;

FIG. 13 is a cross-sectional view taken along the line C-C in FIG. 1;

FIG. 14 is a cross-sectional view taken along the line D-D in FIG. 1;

fig. 15 is a view taken along direction E in fig. 1.

Description of the reference numerals

A scope tube assembly 1; a working channel 11a; the visual channel 11b; a first pipe 111; a snake bone tube 112; an arc-shaped rib 1121; a jack 112a; a working pipe 113; a video sleeve 114; an end cap 115; a hook 1151; a recess 115a; a through hole 115b; an outer cladding 116; a transition boot 117; a pull rope 12; an illuminating member 13; an electric wire 131; a light emitter 132; a display 2; an operation section 3; video tube 4

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the embodiments of the present application, the distal end and the proximal end refer to the positions, wherein the distal end refers to the end close to the patient, and the proximal end refers to the end close to the medical staff.

The present embodiments provide an endoscope, and the specific type of the endoscope is not limited, and for example, the endoscope may be an enteroscope, a laryngoscope, a gastroscope, a bronchoscope, and the like, and is not limited herein.

Referring to fig. 1 and 2, an endoscope according to an embodiment of the present application includes a display 2, a video tube 4, an operation portion 3, and a scope tube assembly 1 according to any embodiment of the present application. The image tube 4 is electrically connected with the display 2, and specifically, the image tube 4 is provided with an image sensor, and an image signal collected by the image sensor is transmitted to the display 2 for the medical staff to view. The proximal end of the image tube 4 is provided in the operation unit 3, and the operation unit 3 is provided with a driving mechanism for driving the bending of the lens barrel assembly 1.

Referring to fig. 3, the tube assembly 1 includes a tube body, at least two pulling ropes 12 and an illuminating member 13 disposed in the tube body, a portion of the distal end of the tube body is a snake bone tube 112, and a video channel 11b for inserting and pulling the video tube 4 of the endoscope is disposed in the tube body. The far end of the video channel 11b is a transparent closed end, and the video tube 4 can be inserted into the video channel 11b in a pluggable manner; the distal end of each pull string 12 is connected to the snake bone canal 112, the proximal end of the pull string 12 extends out of the proximal end of the main body of the endoscope, and a driving mechanism is connected to the proximal end of each pull string 12 to drive the snake bone canal 112 to bend or reposition. The light emitted from the illuminator 13 is transmitted through the distal end of the lens tube body to project light toward the field of view of the image tube 4.

Illustratively, the distal end of one of the pulling ropes 12 is connected to one side of the inside of the distal end of the snake bone segment 112, and the distal end of the other pulling rope 12 is connected to the opposite side of the inside of the distal end of the snake bone segment 112, i.e. both pulling ropes 12 are arranged inside the snake bone segment 112.

In the related art, the video tube of the endoscope is used as a reusable instrument, but the video tube is directly contacted with the tissues in the body of a patient, and needs to be sterilized after use so as to reduce the risk of cross infection as much as possible, and the sterilization process is strict and time-consuming, so that the use cost is high.

The mirror tube subassembly of this application embodiment, it is as disposable consumptive material, and supporting endoscope with it is as repeatedly usable apparatus, and supporting endoscope's video pipe is not in operation in-process with the internal tissue direct contact of patient, according to the endoscope management standard, the postoperative need not to soak the disinfection, but greatly reduced disinfection level reduces use cost.

In the related art, the illumination element is integrated in the video tube, that is, the video tube is provided with a light source, if the disposable soft sleeve is directly arranged outside the video tube, when the video tube is bent and adjusted, a gap can be formed between the far end part of the video tube and a transparent window of the soft sleeve, part of light of the illumination element can be reflected at the inner side of the transparent window at certain angles, and the light is reflected to an image sensor in the video tube, so that a light reflecting effect is generated, and imaging is interfered.

The mirror tube subassembly of this application embodiment, video pipe 4 separately sets up with illuminating part 13, and illuminating part 13 does not set up in video pipe 4 promptly for the distal end and the 13 separation of illuminating part of video passageway 11b set up, that is to say, light that illuminating part 13 sent can not be cast on the internal surface of the transparent window of video passageway 11b distal end, thereby can not disturbed by when making the image sensor of video pipe 4 gather the light signal of the internal tissue diffuse reflection of patient basically.

When the pull rope 12 drives the snake bone tube 112 to bend and reset, the light of the illuminating element 13 is basically not directly emitted into the inner surface of the window of the visual channel 11b from the illuminating element 13 and reflected to the image sensor, so that the light reflection phenomenon can be prevented when the visual tube 4 is bent and adjusted. The illumination element 13 is a disposable consumable as are the other components of the scope body. The endoscope of the embodiment of the present application may be configured such that the image tube 4, the operation portion 3, and the display 2 are assembled into a single unit, the scope tube assembly 1 of the embodiment of the present application is assembled into a single unit, and the two units are detachably connected together to form the endoscope. After the endoscope is used, the endoscope tube assembly 1 is detached from the operation part 3, the detached endoscope tube assembly 1 is discarded as medical waste, and when the endoscope is required to be used next time, a new endoscope tube assembly 1 is replaced.

In the related art, the snake bone is integrated in the video tube, and based on the design, if the disposable soft sleeve is sleeved outside the video tube, the cross section size of the combined video tube and soft sleeve is relatively large, so that various clinical application scenes (scenes requiring strict control of the cross section size) are difficult to meet; moreover, the snake bone needs to have enough structural strength to drive the integral distal end of the endoscope tube to bend and reset, generally, the outer diameter of the snake bone is approximately more than 3mm, and if the outer diameter of the snake bone is too small, the bending amplitude and the bending force of the snake bone structure are small, so that the snake bone structure cannot well drive the visual tube to controllably bend and reset; because the snake bone is integrated in the video tube and the wrapping layer is arranged outside the snake bone, the cross section size of the video tube is larger than that of the snake bone correspondingly; in addition, the video tube is also integrated with a light guide, and the video tube itself also has a certain thickness along the radial direction, and the above configuration in the prior art directly causes that the cross section size of the endoscope is difficult to compress.

The endoscope of the embodiment of the application separately sets the video tube 4 and the endoscope tube assembly 1, and integrates the snake bone tube 112 and the traction rope 12 which are used for bending on the endoscope tube assembly 1, so that the endoscope tube assembly 1 is convenient to bend and realize the size control of the endoscope tube assembly 1, and the endoscope tube assembly 1 is compact in structure. In the embodiment of the present application, the snake bone structure is integrated on the main body of the endoscope to form the snake bone tube 112, and the snake bone tube 112 is a part of the tube member, so that the snake bone tube 112 can be ensured to have a proper outer diameter dimension, so that the snake bone tube 112 has better structural strength and bending performance. In addition, since the image tube 4 only needs to transmit an image captured by the image sensor, the size of the image tube 4 can be made small, and thus, in the case where the scope tube assembly 1 can be used once, the outer diameter of the scope tube assembly 1 can be kept relatively small.

The illuminating member 13 is used to provide illuminating light to the field of view of the image tube 4, and therefore, the specific configuration of the illuminating member 13 is not limited as long as the illuminating light can be provided.

Illustratively, in one embodiment, a light guide channel is provided in the lens tube main body, the illuminating element 13 is a plastic optical fiber, the plastic optical fiber is inserted into the light guide channel, and the plastic optical fiber extends along the length direction of the lens tube main body, specifically, from the proximal end of the lens tube main body to the distal end of the lens tube main body. The plastic optical fiber is used as a light guide medium, and light emitted from a light source disposed in the operation unit 3 enters the plastic optical fiber from the proximal end surface of the plastic optical fiber, is transmitted by the plastic optical fiber, and exits from the distal end portion of the plastic optical fiber.

In another embodiment, referring to FIG. 3, the illuminating device 13 comprises a light emitter 132 and a wire 131, wherein the light emitter 132 is disposed at the distal end of the main body of the lens tube, and the wire 131 extends from the distal end of the main body of the lens tube to the proximal end of the main body of the lens tube and out of the proximal end of the main body of the lens tube. When the scope assembly 1 and the operation unit 3 are assembled, the electric wire 131 may be connected to the power supply in the operation unit 3. The operation unit 3 may be provided with a control button for controlling the on/off of the power supply.

The specific type of the light emitter 132 is not limited as long as it can emit light by energization, and may be, for example, a light bulb, an LED lamp, or the like.

In one embodiment, referring to fig. 3 and 9, the main body of the endoscope includes a first tube 111, a snake bone tube 112, and a working tube 113, the snake bone tube 112 is connected to the distal end of the first tube 111, the working tube 113 is disposed through the first tube 111 and the snake bone tube 112, the working tube 113 extends from the proximal end of the first tube 111 to the distal end of the snake bone tube 112, and a space inside the working tube 113 is a working channel 11a. In this embodiment, the separation of the working channel 11a from the first tube 111 and other spaces within the snake tube 112 is achieved by a working tube 113.

The snake bone tube 112 and the first tube 111 together constitute a main body force receiving member of the scope main body.

In order to improve the connection reliability of the joint between the snake bone tube 112 and the first tube 111, please refer to fig. 3, 6, 9 and 13, in an embodiment, the main body of the endoscope further includes a transition sleeve 117, the end surface of the snake bone tube 112 abuts against the end surface of the first tube 111, the transition sleeve 117 is sleeved on the outer surface of the joint between the snake bone tube 112 and the first tube 111, one part of the transition sleeve 117 is bonded or ultrasonically welded to the first tube 111, and the other part is bonded or ultrasonically welded to the snake bone tube 112. It should be noted that, in order to avoid the transition sleeve 117 from increasing the outer diameter of the main body of the endoscope tube additionally, the wall thickness of the first tube 111 is reduced at the position corresponding to the transition sleeve 117, and the outer surface of the snake tube 112 is recessed, so that the outer surface of the transition sleeve 117, the outer surface of the first tube 111, and the outer surface of the snake tube 112 are substantially flush.

It should be noted that, the specific material of the snake bone tube 112 is not limited, and may be a metal material, or a plastic material, and is not limited herein.

In one embodiment, referring to FIG. 11, the distal end of the viewing channel 11b and the working channel 113 are disposed along the diameter of the snake 112, i.e., the center of the viewing tube 4 and the center of the working channel 113 are approximately on the diameter of the snake 112. The inner wall of the distal end of the snake bone tube 112 is provided with two spaced arc-shaped ribs 1121 protruding towards the direction of the working tube 113, the two arc-shaped ribs 1121 are spaced towards one end of the working tube 113, and the video channel 11b is located in a space surrounded by the two arc-shaped ribs 1121. On one hand, the arc-shaped ribs 1121 facilitate the positioning of the distal end of the inserted video tube 4, and prevent the distal end of the video tube 4 from swinging randomly in the video channel 11b, and on the other hand, the arc-shaped ribs 1121 do not increase the radial dimension of the snake bone tube 112, and can also play a role in blocking the light of the illuminating part 13.

The number of the illuminating members 13 is not limited, and may be one or more. In the embodiment of the present application, referring to fig. 11, the number of the illuminating elements 13 is two, specifically, the connecting line between the image channel 11b and the center of the working tube 113 is taken as a reference line, and the light emitting positions of the two illuminating elements 13 are approximately symmetrically arranged on two opposite sides of the reference line, so that the illuminance in the field of view of the image tube 4 is relatively uniform.

It should be noted that, in the case of meeting the structural strength requirement, the smaller the outer diameter of the traction rope 12 is, the better, so as to avoid the traction rope 12 occupying a larger space. The specific material of the pulling rope is not limited, and may be metal, fiber, resin, etc., and is not limited herein as long as the pulling rope 12 has sufficient strength.

In one embodiment, referring to fig. 5-7, a portion of the pull-cord 12 is inserted through the wall of the snake tube 112, and another portion of the pull-cord 12 is disposed in the space of the first tube 111. That is, the first tube 111 has substantially no influence on the position and force of the pull cord 12.

It should be noted that, in some embodiments, the hauling cable 12 is exposed in the space inside the first pipe body 111; in other embodiments, the tube assembly 1 includes a spring tube disposed in the first tube 111, and the pulling rope 12 is disposed through the spring tube to protect the pulling rope 12.

In one embodiment, referring to fig. 3, 8 and 9, the lens tube assembly 1 includes a video sleeve 114, the video sleeve 114 is disposed through the first tube 111 and extends from the proximal end of the first tube 111 to the distal end of the first tube 111, specifically, the video sleeve 114 does not penetrate into the snake tube 112, and the space inside the video sleeve 114 and the space inside the snake tube 112 together define the video channel 11b. It should be noted that the wall thickness of the snake bone tube 112 in the radial direction is greater than that of the first tube 111, so the space in the snake bone tube 112 is smaller than that in the first tube 111, in this embodiment, the video sleeve 114 only passes through the first tube 111, and does not occupy the space in the snake bone tube 112, on one hand, the video tube 4 can be guided to be inserted, and on the other hand, the structure of the scope tube assembly 1 can also be compact.

In one embodiment, in which the distal end of the snake tube 112 is open, referring to fig. 3, 7 and 10, the tube assembly 1 includes a light-transparent end cap 115, that is, the end cap 115 is made of a light-transparent material. Referring to fig. 4 and 10, the end cap 115 is provided with a through hole 115b communicating with the working channel 11a, and the end cap 115 is connected to the snake tube 112 and covers the opening of the snake tube 112 outside the working channel 11a. That is, of the end portions of the snake bone tube 112, only the working channel 11a is in communication with the outside, and the remaining space is isolated from the outside.

Specifically, the distal end of the working tube 113 may be inserted into the through hole 115b, a stop step may be disposed on the inner wall of the through hole 115b, and the end surface of the working tube 113 abuts against the stop step, so as to facilitate axial positioning of the working tube 113.

The specific connection manner of the end cap 115 and the snake bone tube 112 is not limited, for example, bonding, ultrasonic welding, clamping, etc. In an embodiment of the application, the end cap 115 is provided with an elastic hook 1151 protruding towards the inside of the snake bone tube 112, a jack is arranged on the tube wall of the snake bone tube 112, the elastic hook 1151 is clamped into the jack, and the end cap 115 can be axially positioned by matching of the elastic hook 1151 and the jack, so that the end cap 115 is prevented from being separated from the snake bone tube 112. After the elastic clamping hook 1151 is clamped into the jack, the end cover 115 and the snake bone pipe 112 are bonded and sealed by glue, and the connection reliability of the end cover 115 and the snake bone pipe 112 is further improved.

In one embodiment, the end surface of the end cap 115 on the side facing away from the viewing passage 11b is flush with the distal end surface of the serpentine tube 112.

In one embodiment, referring to fig. 4, the cap 115 is provided with a groove 115a, and referring to fig. 7, the light emitter 132 is embedded in the groove 115a of the cap 115. Thus, the light emitted by the light emitter 132 is directly emitted from the outer end surface of the end cover 115 on the side away from the video channel 11b, and is hardly projected onto the inner surface of the end cover 115 corresponding to the video tube 4, so that the light reflection interference on the video tube 4 is not caused. In addition, the light emitted from the light emitter 132 is not substantially blocked by the snake bone 112, and can have a large illumination area.

In an embodiment, referring to fig. 3, fig. 6, fig. 7, fig. 9, fig. 10, fig. 12 and fig. 13, the endoscope tube assembly 1 further includes an outer covering layer 116, wherein the outer covering layer 116 covers the outer surface of the snake bone tube 112 and covers the junction between the snake bone tube 112 and the first tube 111. The outer coating 116 can seal the circumferential surface of the snake tube 112, on the one hand, and can also cover the structure of the snake tube 112, on the other hand, so that the scope assembly 1 is aesthetically pleasing.

The various embodiments/implementations provided herein can be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An endoscope tube assembly of an endoscope, comprising:

the endoscope comprises an endoscope tube main body, wherein a part of tube section at the far end of the endoscope tube main body is a snake bone tube (112), a video channel (11 b) which is used for being in plug-in fit with a video tube (4) of the endoscope is arranged in the endoscope tube main body, and the far end of the video channel (11 b) is a transparent closed end;

at least two pulling ropes (12) for driving the snake bone tube (112) to bend or reset, wherein the distal end of each pulling rope (12) is connected with the snake bone tube (112), and the proximal ends of the pulling ropes (12) penetrate out of the proximal end of the endoscope tube body;

the illuminating piece (13) is arranged in the lens tube main body, and light rays emitted by the illuminating piece (13) penetrate through the far end of the lens tube main body so as to project light rays to the visual field of the image tube (4).

2. The mirror tube assembly according to claim 1, characterized in that the distal end of the visual channel (11 b) is arranged in a blocking relationship with the illumination member (13).

3. A lens tube assembly according to claim 1, characterized in that a light guide channel is provided in the lens tube body, and the illuminating member (13) is a plastic optical fiber inserted into the light guide channel and extending from the proximal end of the lens tube body to the distal end of the lens tube body.

4. The lens tube assembly according to claim 1, characterized in that the illuminating member (13) comprises a light emitter (132) and an electric wire (131), the light emitter (132) being provided at the distal end of the lens tube body, the electric wire (131) extending from the distal end of the lens tube body to the proximal end of the lens tube body and coming out from the proximal end of the lens tube body.

5. The mirror tube assembly according to claim 1, characterized in that a working channel (11 a) is provided in the mirror tube body, which is isolated from the visual channel (11 b), the distal end of the working channel (11 a) being open.

6. An endoscope assembly according to claim 5, characterized in that said endoscope body comprises a first tube (111), said snake tube (112) and a working tube (113), said snake tube (112) being connected to the distal end of said first tube (111), said working tube (113) being inserted in said first tube (111) and said snake tube (112) and extending from the proximal end of said first tube (111) to the distal end of said snake tube (112), the space inside said working tube (113) being said working channel (11 a).

7. A mirror tube assembly according to claim 6, characterized in that the distal end of the visual channel (11 b) and the working tube (113) are arranged in the diametrical direction of the snake tube (112), the inner wall of the distal end of the snake tube (112) is provided with two spaced arc-shaped ribs (1121) projecting in the direction of the working tube (113), the two arc-shaped ribs (1121) are spaced apart towards one end of the working tube (113), and the visual channel (11 b) is located in the space enclosed by the two arc-shaped ribs (1121).

8. An endoscope tube assembly according to claim 6, characterized in that a portion of the traction rope (12) is arranged through the wall of the snake tube (112) and another portion of the traction rope (12) is located in a space within the first tube (111).

9. An endoscope tube assembly according to claim 6, characterized in that it comprises an image sleeve (114), said image sleeve (114) being arranged through said first tube body (111) and extending from a proximal end of said first tube body (111) to a distal end of said first tube body (111), a space within said image sleeve (114) and a space within said snake tube (112) together defining said image channel (11 b).

10. An endoscope tube assembly according to claim 6, characterized in that the distal end of the snake tube (112) is open, the endoscope tube assembly comprising a light-transmissive end cap (115), the end cap (115) being provided with a through hole (115 b) communicating with the working channel (11 a), the end cap (115) being connected with the snake tube (112) and covering the opening of the snake tube (112) outside the working channel (11 a).

11. The lens tube assembly according to claim 10, characterized in that the illuminator (13) comprises a light emitter (132) and an electric wire (131), the electric wire (131) extending from the distal end of the lens tube body to the proximal end of the lens tube body and passing out from the proximal end of the lens tube body, the end cap (115) is provided with a groove (115 a), and the light emitter (132) is embedded in the groove (115 a).

12. An endoscope tube assembly according to claim 6, characterized in that it comprises an outer coating (116), said outer coating (116) being applied to the outer surface of said snake tube (112) and covering the interface between said snake tube (112) and said first tube (111).

13. An endoscope, comprising:

a display (2);

the image tube (4), the said image tube (4) is connected with the said display (2) electrically;

an operation part (3), the near end of the video tube (4) is arranged in the operation part (3), the operation part (3) is provided with a driving mechanism,

and a mirror tube assembly as claimed in any one of claims 1 to 12, said vision tube (4) being insertably insertable into said vision channel (11 b); the driving mechanism is connected with each traction rope (12) to drive the snake bone pipe (112) to bend or reset.