CN209018664U - Endoscope - Google Patents

Abstract

The utility model discloses a kind of endoscopes, its insertion section is equipped with controllable bending curved tube, controllable bending curved tube includes multiple circular tube shaped tube couplings being serially connected, each tube coupling one end is equipped with the first c-type occlusion portion, its opening direction is axial at the first angle with controllable bending curved tube, the first C-shaped gap is equipped on the outside of the first c-type occlusion portion, the other end is equipped with the second c-type occlusion portion matched with the first C-shaped gap, its inside is equipped with the second C-shaped gap and ball bumps matched with the first c-type occlusion portion, when tube coupling series connection, ball bumps are sticked in inside the first c-type occlusion portion, first c-type occlusion portion and the second c-type occlusion portion can the relative motions in the second C-shaped gap of adjacent tube coupling and the first C-shaped gap respectively.The ball bumps of the utility model are difficult to fall off from the first c-type occlusion portion, and the connection between each tube coupling more fastens, and the opening direction of the second c-type occlusion portion and the axial direction of swan-neck also have angle, and further increase the tightness of connection.

Description

Endoscope

Technical field

The utility model relates to medical instruments fields, more particularly to a kind of endoscope including controllable bending curved tube.

Background technique

The insertion being inserted into vivo or in pipe is equipped in the endoscope that can be applied to industrial use, medical application Portion.Generally in the endoscope with soft insertion section, controllable bending pars convoluta is equipped in the front end side of insertion section.Bending section can be with The operation of operating device in operation portion and carry out flexure operation.Therefore, in the endoscope with bending section, Neng Goutong Crossing operating device makes the direction set on the observation portion of front end towards desired orientation.

In the patent of invention application No. is CN200510076111.1, a kind of bendable portion (8 ') is disclosed, this can Bending part (8 ') is arranged in the far-end of the insertion tube of endoscope, comprising: and multiple tube couplings (9 ') are every in the tube coupling (9 ') A tube coupling has attachment device (11), which matches with the attachment device (11) of adjacent tube coupling (9 ')；And Control line can control the bending of bendable portion (8 ') using the control line；Wherein each attachment device of tube coupling (9 ') (11) it is arranged so that them from its face (respectively 12 and 13) axially extended and be located in the shell (15 ') of tube coupling (9 ') It is interior, and them is made to be no more than the thickness of shell, it is provided on each face (respectively 12 and 13) of adjacent tube coupling (9 ') And it is complimentary to one another in a manner of hinge type connection to be positioned to attachment device (11) relative to each other.

In the patent of invention document application No. is CN201280041664.1, a kind of bending section is disclosed, the bending section With the curved block group for being continuously provided with multiple curved blocks in a rotatable manner, which is by cutting off stereoplasm tube And it forms curved block and forms protrusion in curved block side and form recess portion in the curved block other side and be arranged can rotate Mode link the holding section between curved block and formed, wherein holding section includes the 1st holding section, by pass through cutting It is formed in the 1st protrusion of curved block side and is formed simultaneously in the curved block other side and for the 1st recess portion structure of the 1st protrusion sliding At；And the 2nd holding section, by 2nd protrusion of a pair and together for being formed in the curved block other side across the 1st recess portion by cutting off When be formed in curved block side and a pair of of the second recesses slided respectively for a pair of 2nd protrusion are constituted, be provided with and cut in curved block Fall a part of the bottom of the 1st recess portion and widens the 1st reinforcement part at the curved block end of one end or from the bottom surface of a pair of of second recesses Act the either side in the 2nd reinforcement part at the curved block end for widening another side.

In the patent of invention document application No. is CN201580047959.3, a kind of patience with to external force is provided and is obtained To the endoscope apparatus of the swan-neck of enhancing, the external force is applied to being formed as connected multiple curved blocks by laser description The external force added includes drawing, bending and torsion.In order to achieve the above objectives, the swan-neck of the embodiment of the invention includes 1 curved block is used to be configured to curved swan-neck；2nd curved block is used to rotate relative to the 1st curved block；Even Bar portion is formed in the 1st curved block, has the rotation axis for making the 2nd curved block rotation；Holding section is formed in institute The 2nd curved block is stated, there is sliding surface substantially parallel with the rotation axis and relative to link rod part sliding, the holding section Engaged with the link rod part for that can rotate；And receiving portion, it is formed in the attached of link rod part described in the 1st curved block Closely, there is vertical plane, which can support when the holding section engaged with the link rod part rotates with the holding section Connect, be formed in in the rotation axis generally perpendicular direction.

However, swan-neck structure provided in above-mentioned file, constitutes each curved block or the company of tube coupling of swan-neck Binding structure is the recess being mutually clamped and protrusion, and the axial direction of the opening direction of recess and swan-neck is consistent, and protrusion is along curved The axial direction of curved tube be caught in recess connect each curved block perhaps tube coupling it is this design be easy to cause curved block or pipe Section falls off, and increases operation safety hidden danger, influences the service life of instrument.

Summary of the invention

The utility model discloses a kind of endoscope, insertion section is equipped with controllable bending curved tube, and controllable bending curved tube includes multiple The circular tube shaped tube coupling being serially connected, and the control device that control controllable bending curved tube bends, one end of each tube coupling is equipped with First c-type occlusion portion, the opening direction of the first c-type occlusion portion, axially at the first angle, surround the first c-type with controllable bending curved tube The first C-shaped gap is equipped on the outside of occlusion portion, the other end is equipped with the second c-type occlusion portion matched with the first C-shaped gap, the 2nd C The second C-shaped gap and ball bumps matched with the first c-type occlusion portion is equipped on the inside of type occlusion portion, the second C-shaped gap surrounds Ball bumps, when tube coupling is connected with adjacent tube coupling, ball bumps are sticked in inside the first c-type occlusion portion, so that the first c-type Occlusion portion be embedded in the second C-shaped gap, while the second c-type occlusion portion be embedded in the first C-shaped gap, after engaging the first c-type occlusion portion and Second c-type occlusion portion can the relative motion in the second C-shaped gap of adjacent tube coupling and the first C-shaped gap respectively.

Preferably, the first angular range formed by axial direction of the opening direction of the first c-type occlusion portion with controllable bending curved tube is 10°-90°。

Further, the opening direction Yu controllable bending curved tube of the second c-type occlusion portion is axial at the second angle, the second angle Range is 10 ° -90 °.

Further, one end of each tube coupling is circumferentially upper sets relatively there are two the first c-type occlusion portion and the first C-shaped gap, Correspondingly circumferentially upper opposite the 2nd C for being equipped with two group of second c-type occlusion portion and being matched with the first c-type occlusion portion of its other end Type notch and ball bumps, after engaging between adjacent any two tube coupling have crack, crack interval the first c-type occlusion portion or Second c-type occlusion portion is arranged and along the circumferentially extending of tube coupling.

Preferably, each tube coupling and adjacent tube coupling are formed by the tube coupling wall between crack and are equipped with one or more slots, Circumferentially extending of the slot in each tube coupling.

Further, control device includes one or more traction fiber, and traction fiber is penetrated from the tube coupling one end being serially connected, And it is fixedly connected with the tube coupling for the other end outermost end for being located at the tube coupling being serially connected.

Preferably, tube coupling is additionally provided with one or more fixed parts for being used for fixed traction silk.

Further, fixed part is distributed in the circumferential direction of tube coupling.

Preferably, fixed part is the round tube being fixedly connected on tube coupling inner wall.

The utility model relates to endoscope, due to constitute swan-neck each joint c-type occlusion portion opening direction It axially has angle with swan-neck, the ball bumps that when bending fastens are difficult from wherein falling off, so that between each tube coupling Connection more fastens, and the opening direction of C-shaped gap and the axial direction of swan-neck also have angle, and further increase the fastening of connection Property, and c-type occlusion portion can form displacement in C-shaped gap, to provide the curved space required for tube body is bent, be conducive to Bending degree is controlled by command displacement degree, is providing great convenience property of surgical procedure, there is very high practical valence Value.

For the above content of the utility model can be clearer and more comprehensible, preferred embodiment is cited below particularly, and in conjunction with attached drawing, make Detailed description are as follows.

Detailed description of the invention

The utility model is introduced below in conjunction with attached drawing.

Fig. 1 is the overall structure diagram of endoscope disclosed in the utility model embodiment；

Fig. 2 is the side view of endoscope controllable bending curved tube disclosed in the utility model embodiment；

Fig. 3 is the structural schematic diagram of tube coupling disclosed in the utility model embodiment；

Fig. 4 is the overall structure diagram of endoscope controllable bending curved tube disclosed in the utility model embodiment；

Fig. 5 is another overall structure diagram of endoscope controllable bending curved tube disclosed in the utility model embodiment；

Fig. 6 is the bending state overall schematic of endoscope controllable bending curved tube disclosed in the utility model embodiment；

Fig. 7 is the bending state partial enlargement signal of endoscope controllable bending curved tube disclosed in the utility model embodiment Figure.

Specific embodiment

The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this theory The bright revealed content of book understands other advantages and effect of the utility model easily.

The illustrative embodiments of the utility model are introduced referring now to the drawings, however, the utility model can use many Different forms is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be in order at large and complete Open the utility model entirely, and the scope of the utility model is sufficiently conveyed to person of ordinary skill in the field.For The term in illustrative embodiments being illustrated in the accompanying drawings not is the restriction to the utility model.In the accompanying drawings, identical Cells/elements use identical appended drawing reference.

Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.

As shown in Figure 1, being provided in one embodiment of the utility model a kind of using being peeped in above-mentioned controllable bending curved tube Mirror 200 is provided with endoscope controllable bending curved tube as described above in the front end side for being inserted into the insertion section in vivo or in pipe Structure.As shown in Fig. 2, endoscope may include: endoscope-use insertion tube 1, control device 2 and handle 3；It can be on insertion tube 1 The part for entering inside of human body is equipped with controllable bending curved tube structure 100.

The structure of endoscope controllable bending curved tube 100 shown in Fig. 2 is obviously visual comprising constitutes the multiple of controllable bending curved tube The circular tube shaped tube coupling 10 being serially connected, from the figure 3, it may be seen that one end of each tube coupling 10 is equipped with the first c-type occlusion portion 101, the first c-type The opening direction of occlusion portion and controllable bending curved tube it is axial at the first angle r, the is equipped on the outside of the first c-type occlusion portion 101 One C-shaped gap 102, the other end are equipped with the second c-type occlusion portion 111 matched with the first C-shaped gap, the second c-type occlusion portion 111 Inside is equipped with the second C-shaped gap 112 and ball bumps 113 matched with the first c-type occlusion portion 101, the second C-shaped gap 112 Around ball bumps 113, when tube coupling 10 is connected with adjacent 10 ' of tube coupling, ball bumps 113 are sticked in the first c-type occlusion portion Inside 101, so that the first c-type occlusion portion 101 is embedded in the second C-shaped gap 112, while the second c-type occlusion portion 111 is embedded in the first C Type notch 102, the first c-type occlusion portion 101 and the second c-type occlusion portion 111 can be respectively in the second c-types of adjacent tube coupling after engaging Relative motion in notch 112 and the first C-shaped gap 102.

Specifically, it if desired will link together, while can be pivoted without being applicable in the additional dresses such as bolt between tube coupling It sets, just needs one end of tube coupling to be equipped with clamp structure and the protruding parts of the adjacent tube coupling other end are clamped or engaged, this is practical It is used in novel embodiment and the first c-type occlusion portion 101 is set in one end of tube coupling, the other end of adjacent tube coupling is arranged and should Mutually matched second C-shaped gap 112 of first c-type occlusion portion, and ball bumps 113 are set in the second C-shaped gap center side, Since the opening direction of the second c-type occlusion portion 112 and the axial direction of controllable bending curved tube 100 are at the first angle r, ball bumps 113 are needed Cooperate the opening direction and be set to the central side of the second C-shaped gap 112, is offset to the axial direction of tube body, and spherical convex Rise 113 diameter be greater than the first c-type occlusion portion 101 opening bore be axially sticked in so that ball bumps 113 are offset to tube body First c-type occlusion portion, 101 center, in this way when stretching or bending, ball bumps 113 are difficult opening from the first c-type occlusion portion 101 It falls off, can be firmly sticked in the first c-type occlusion portion 101 at mouthful, and the first c-type occlusion portion 101 can be lacked in the second c-type It is subjected to displacement in mouth 112 to provide the curved space for tube body, to improve tube coupling while ensure that curved controllability Between the stability that connects.

10 structure of tube coupling in the utility model embodiment is simple, machine-shaping can be cut by laser, processing cost is low It is honest and clean, and high yield rate.The material of tube wall is preferably metal material, such as sus304, sus316 either Nitinol etc..It can also To select nonmetallic materials, such as nylon, polyurethane (PU), thermoplastic polyurethane elastomer rubber (TPU), polyvinyl chloride (PVC), the various plastic materials such as thermoplastic elastomer (TPE) (TPE).

In one preferred embodiment of the utility model, the opening direction and controllable bending curved tube of the first c-type occlusion portion 101 First angle r formed by 100 axial direction may range from 10 ° -90 °, can obtain optimal engaging limit effect positioned at the range Fruit can either obtain the convenience of Joining Technology, and can obtain firm limit effect, therefore can obtain in practice very Good application.

One embodiment according to the present utility model is equipped with the first C-shaped gap on the outside of the first c-type occlusion portion 101 102, the other end of tube coupling 10 is equipped with the second c-type occlusion portion 111 matched with the first C-shaped gap 102, when ball bumps 113 When being sticked in the first c-type 101 inside of occlusion portion, the first c-type occlusion portion 101 is embedded in the second C-shaped gap 112, while the second c-type is stung Conjunction portion 111 is embedded in the first C-shaped gap 102, and the second c-type occlusion portion 111 is likewise supplied with an opening, opening towards can be with The axial direction of controllable bending curved tube 100 is consistent, and more preferably, the direction of the opening and the axial direction of controllable bending curved tube 100 also can It has angle, i.e. the second angle y shown in Fig. 3, when tube body occurs to stretch or be bent, the second c-type occlusion portion 111 is also difficult It falls off from the opening of the first C-shaped gap 102, which, which is equivalent to, provides dual limit guarantee, can further increase The stability connected between each tube coupling 10 farthest reduces the risk that tube coupling falls off, and has good application value.

Further, second formed by the opening direction of the second c-type occlusion portion 111 and the axial direction of controllable bending curved tube 100 Angle y can be 10 ° -90 °, can obtain optimal engaging limit effect positioned at the range, can either obtain Joining Technology Convenience, and firm limit effect can be obtained.

Multiple groups the first c-type occlusion portion can be set in one end circumferential direction of each tube coupling 10 in the utility model embodiment 101 and first C-shaped gap, to meet the bending direction requirement of different application scene.Another in the utility model is preferred real It applies in example, as in Fig. 4 to Fig. 7, one end circumferential direction of each tube coupling 10 is equipped with two groups of first opposite c-type occlusion portions 101 and the One C-shaped gap 102 is accordingly circumferentially above equipped with two group of second c-type occlusion portion 111 relatively in its other end and stings with the first c-type The second C-shaped gap 112 and ball bumps 113 that conjunction portion 101 matches have crack 104, folder between adjacent tube coupling 10 after engaging 104 interval c-type occlusion portion of seam is arranged and along the circumferentially extending of tube coupling, and the controllable bending curved tube of the embodiment can be in control device Control under be bent to both direction, crack 104 provides the curved space for the bending of controllable bending curved tube 100, as shown in fig. 7, When controllable bending curved tube bends deformation to a direction, the first c-type occlusion portion 101 of each tube coupling 10 is in adjacent tube coupling It is subjected to displacement in the second C-shaped gap 112 of 10 ', specially the rotation around the generation certain angle of ball bumps 113, while the The opening direction of two C-shaped gaps 112 also correspondingly rotates, and is spaced the opposite two sides of the first c-type occlusion portion 101 setting Crack 104, then side gap increases, and the gap of the opposite other side reduces, and to meet space needed for tube body is bent, works as controlled deflection Above-mentioned all changes reversely generate when pipe is to another lateral bend, allow the controllable bending curved tube 100 in the embodiment to two Direction bending.It will be appreciated by those skilled in the art that the design of the first c-type occlusion portion should be not limited only to institute in the embodiment The position of offer and quantity can accordingly be designed according to specific application scenarios, to meet different bending direction demands.

From in Fig. 5 as it can be seen that each tube coupling 10 and adjacent 10 ' of tube coupling are formed by between crack 104 and are also provided with one A or multiple slots 105, slot 105 is in the circumferentially extending of tube coupling 10, and slot 105 can be the various shapes such as round, rectangular or strip Shape.The slot 105 for two strips being parallel to each other, 105 energy of slot are equipped between the crack 104 of each tube coupling 10 shown in Fig. 5 Space needed for tube body is bent enough is further provided for, increases the curved angular range of controllable bending curved tube, enhances the flexibility of tube body, and energy Tube body weight and manufacturing cost are enough reduced, is very cleverly a kind of design in practice.

In order to control user preferably to controlled deflection device, in one embodiment of the utility model, Also the tube coupling 10 being serially connected is controlled using control device.Further, control device is preferably that one or more leads Draw silk, for control series connection after tube coupling 10 towards one or more directions be bent, traction fiber from the tube coupling 10 being serially connected one End penetrates, and is fixedly connected with the tube coupling 10 for the other end outermost end for being located at the tube coupling 10 being serially connected, and is applied to when by external force On traction fiber, that is, when pulling traction fiber, the tube coupling being fixedly connected with traction fiber 10 can be driven to move, at this time on the tube coupling 10 The first c-type occlusion portion 101 and 10 ' of tube coupling adjacent thereto ball bumps 113 between rotate, when the c-type of the tube coupling 10 Occlusion portion 101 continues to pull traction fiber after going to the extreme position of the second C-shaped gap 112 of adjacent 10 ' of tube coupling, can continue to drive Adjacent 10 ' of tube coupling continues to rotate, so that whole bending apparatus be made to bend；When bending apparatus is bent to user institute After the angle needed, the external force being applied on bending apparatus and fixed traction silk are removed, bending apparatus can be made to be maintained at the bending Position.

Further, in one embodiment of utility model, tractive unit is preferably steel wire, and however, it is not limited to this, is led The portion of drawing can also be any filamentous structure, and filamentary structure can also select any metal or non-metallic material.

In order to cooperate traction fiber preferably with bending apparatus, prevent traction fiber movable in the tube coupling 10 of bending apparatus, Curved effect is influenced, can be also equipped in one embodiment of the utility model, on tube coupling 10 one or more for fixing The fixed part of traction fiber.In one embodiment of the utility model, preferably in multiple concatenated tube couplings 10 setting one or Two traction fibers are as control device 20 so that controlled deflection device can be bent towards one or two direction.Further, In the embodiment, when tube coupling 10 is equipped with multiple fixed parts, multiple fixed parts are distributed on tube coupling 10, to guarantee bending apparatus It can be bent with one way or another.

Further, fixed part can be the round tube being fixedly connected on 10 inner wall of tube coupling, be also possible to be opened in pipe Save the wire casing on 10 inner walls.Traction fiber is fixed by fixed part, can prevent traction fiber slippage from leading to controlled deflection device Failure.Controlled deflection device involved in the utility model can according to the needs of users, using control unit to tube coupling group into Row bending, and can be bent towards any direction required for user, flexibly and easily.It is provided above to controllable bending curved tube The preferred control mode controlled, skilled person will appreciate that, it further include many control controllable bending curved tubes in practice to institute Demander is not limited only to control device provided in above preferred embodiment to curved control mode or control device.

The embodiments of the present invention are additionally provided with camera and one or more light sources in the insertion end of insertion tube 1, take the photograph As head is connected with display.The non-intrusive end of insertion tube 1 is equipped with handle 3, is used for the curved control device 2 of controlled deflection device It may be disposed on the handle 3.When camera is shot, light source provides bright shooting environmental, display for camera By captured by camera and export image show.When insertion tube 1 enter human body when, camera can also to enter human body Process shot, and shown by the picture transmission of shooting to display, and by display；When insertion tube 1 enters Behind the intracorporal predetermined position of people, camera can be shot human internal environment, while the real-time pictures of shooting being shown Device is shown, so that user observes.

In the above-described embodiments, the controllable bending curved tube 100 being arranged on insertion tube 1 includes the multiple phases for constituting controllable bending curved tube Mutual concatenated circular tube shaped tube coupling 10, from the figure 3, it may be seen that one end of each tube coupling 10 is equipped with the first c-type occlusion portion 101, the first c-type is stung The opening direction in conjunction portion is axial at the first angle r with controllable bending curved tube, and the first C is equipped on the outside of the first c-type occlusion portion 101 Type notch 102, the other end are equipped with the second c-type occlusion portion 111 for matching with the first C-shaped gap, in the second c-type occlusion portion 111 Side is equipped with the second C-shaped gap 112 and ball bumps 113 matched with the first c-type occlusion portion 101, and the second C-shaped gap 112 is enclosed Around ball bumps 113, when tube coupling 10 is connected with adjacent 10 ' of tube coupling, ball bumps 113 are sticked in the first c-type occlusion portion 101 Inside, so that the first c-type occlusion portion 101 is embedded in the second C-shaped gap 112, while the second c-type occlusion portion 111 is embedded in the first c-type and lacks Mouth 102, the first c-type occlusion portion 101 and the second c-type occlusion portion 111 can be respectively in the second C-shaped gaps of adjacent tube coupling after engaging 112 and first relative motion in C-shaped gap 102.

In the present embodiment, it in order to make operator possess more comfortable feel, can also be set at the non-intrusive end of insertion tube 1 Handle 3 is set, convenient for users to operation.It, can also be in handle and insertion in order to keep handle 3 and the connection of insertion tube 1 more reliable Connector is set between pipe, reinforces the connection between handle and outer tube.Further, it may be provided on handle 3 for controlling traction fiber Control device 2, control unit is connected with traction fiber, draws to traction fiber, to realize traction to bending apparatus, makes Bending apparatus bending.

In conclusion endoscope involved in the utility model, in controllable bending curved tube structure, due to constituting swan-neck Towards axially having angle with controllable bending curved tube, when bending, fastens spherical for the opening of first c-type occlusion portion of each tube coupling Protrusion is difficult from wherein falling off so that the connection between each tube coupling more fastens, engaging back wall around the first c-type occlusion portion the The opening direction of two c-type occlusion portions and the axial direction of controllable bending curved tube also have angle, and further increase the tightness of connection, and First c-type occlusion portion can be relatively moved to form displacement in the second C-shaped gap, while the second c-type occlusion portion can be Displacement is relatively moved to form in first C-shaped gap, so that the curved space required for tube body is bent is provided, conducive to passing through Command displacement degree controls bending degree, is providing great convenience property of surgical procedure, has very high practical value.

In addition, the above embodiments are only illustrative of the principle and efficacy of the utility model for the utility model, Er Feiyong In limitation the utility model.Anyone skilled in the art all can be under the spirit and scope without prejudice to the utility model, to upper It states embodiment and carries out modifications and changes.Therefore, those skilled in the art are without departing from the revealed spirit of the utility model and skill All equivalent modifications completed under art thought or change should be covered by the claim of the utility model.

Claims (9)

1. a kind of endoscope, which is characterized in that the insertion section of the endoscope is equipped with controllable bending curved tube, the controllable bending curved tube packet Multiple circular tube shaped tube couplings being serially connected, and the control device that the control controllable bending curved tube bends are included, it is each described One end of tube coupling is equipped with the first c-type occlusion portion, the axial direction of the opening direction of the first c-type occlusion portion and the controllable bending curved tube At the first angle, the first C-shaped gap is equipped on the outside of the first c-type occlusion portion, the other end is equipped with to be lacked with first c-type The second c-type occlusion portion for matching of mouth is equipped on the inside of the second c-type occlusion portion and to match with the first c-type occlusion portion Second C-shaped gap and ball bumps, second C-shaped gap surround the ball bumps, when the tube coupling and it is adjacent described in When tube coupling is connected, the ball bumps are sticked in inside the first c-type occlusion portion, so that the first c-type occlusion portion is embedded in Second C-shaped gap, while the second c-type occlusion portion is embedded in first C-shaped gap, first c-type is stung after engaging Conjunction portion and the second c-type occlusion portion can be lacked in second C-shaped gap of the adjacent tube coupling and first c-type respectively Relative motion in mouthful.

2. endoscope as described in claim 1, which is characterized in that the opening direction of the first c-type occlusion portion and it is described can Controlling the first angular range formed by the axial direction of swan-neck can be 10 ° -90 °.

3. endoscope as described in claim 1, which is characterized in that the opening direction of the second c-type occlusion portion and it is described can The axial at the second angle of swan-neck is controlled, second angular range can be 10 ° -90 °.

4. endoscope as described in claim 1, which is characterized in that there are two one end of each tube coupling is circumferentially above set relatively The first c-type occlusion portion and the first C-shaped gap, correspondingly its other end is circumferentially upper opposite equipped with two group of second c-type occlusion portion And the second C-shaped gap and ball bumps matched with the first c-type occlusion portion, after engaging described in adjacent any two There is crack, the first c-type occlusion portion described in the crack interval or the second c-type occlusion portion setting and along institute between tube coupling State the circumferentially extending of tube coupling.

5. endoscope as claimed in claim 4, which is characterized in that each tube coupling and adjacent tube coupling be formed by crack it Between tube coupling wall be equipped with one or more slots, circumferentially extending of the slot in each tube coupling.

6. endoscope as described in claim 1, which is characterized in that the control device includes one or more traction fiber, institute Traction fiber is stated to penetrate from the described tube coupling one end being serially connected, and be located at the other end outermost end of the tube coupling being serially connected The tube coupling be fixedly connected.

7. endoscope as claimed in claim 6, which is characterized in that the tube coupling is additionally provided with one or more for described in fixation The fixed part of traction fiber.

8. endoscope as claimed in claim 7, which is characterized in that the fixed part is distributed in the circumferential direction of the tube coupling.

9. endoscope as claimed in claim 7, which is characterized in that the fixed part is to be fixedly connected on the tube coupling inner wall Round tube.