CN220344382U - Endoscope and operation part thereof - Google Patents

Abstract

The application relates to the technical field of medical equipment, and specifically discloses an endoscope and an operation part thereof, wherein the operation part comprises a shell, a connecting pipe, a first channel pipe and a second channel pipe. A main shaft channel, a first branch channel and a second branch channel are formed in the shell; the connecting pipe is arranged in the main shaft channel in a penetrating manner and is fixedly connected with the shell, a first mounting groove facing the opening of the first branch channel and a second mounting groove facing the opening of the second branch channel are respectively arranged on the connecting pipe, the first channel pipe and the second channel pipe are respectively arranged in the connecting pipe in a penetrating manner and are fixedly connected with the connecting pipe, part of the pipeline of the first channel pipe extends out of the first mounting groove and penetrates through the first branch channel, and part of the pipeline of the second channel pipe extends out of the second mounting groove and penetrates through the second branch channel. The endoscope and the operation part thereof provided by the application are applied, the first channel pipe and the second channel pipe are fixed on the same connecting pipe, so that the connecting structure is simplified, and the assembly is convenient.

Description

Endoscope and operation part thereof

Technical Field

The present application relates to the technical field of medical instruments, and more particularly, to an endoscope and an operation portion thereof.

Background

An ultrasonic endoscope is an endoscope device with ultrasonic diagnosis and treatment functions, taking an ultrasonic bronchoscope as an example, and combining a miniature ultrasonic probe with a common bronchoscope into a whole, performing real-time ultrasonic scanning in the lumen of a trachea and a bronchus, and knowing the histological characteristics of the tube wall layers of the trachea and the bronchus and the ultrasonic images of surrounding adjacent organs, thereby improving the diagnosis level.

Based on practical application, a water sac water delivery channel which is simple and reliable to assemble and is required for the operation of an ultrasonic probe needs to be added on a conventional endoscope. For the endoscope with smaller space of the insertion part and the operation part of the bronchoscope and the like, the arrangement and installation space of the water sac water supply channel is limited, and the water sac water supply channel and the treatment instrument channel are arranged in a mode of synchronously opening holes in the circumferential direction of the instrument channel in the prior application technology, so that the installation of the internal valve body and the instrument operation of medical staff are inconvenient. Further, there is a case where a treatment instrument channel is fixed to an operation unit case, and a balloon water supply channel is fixed to a balloon case connected to the operation unit case by a member such as a thin plate or a connector. But the existing scheme has the problems of complex connection structure, inconvenient assembly and the like.

In summary, how to improve the convenience of assembling the water supply channel of the endoscope water bag and the treatment tool channel is a problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above, an object of the present application is to provide an endoscope and an operation portion thereof, which are configured to effectively improve the convenience of assembly of a water supply passage of a water bag of the endoscope and a treatment tool passage.

In order to achieve the above purpose, the present application provides the following technical solutions:

an operation section of an endoscope, comprising:

a housing having a main shaft passage, a first branch passage and a second branch passage formed therein, the first branch passage and the second branch passage being respectively communicated with the main shaft passage;

the connecting pipe is penetrated in the main shaft channel and fixedly connected with the shell, a first mounting groove facing the opening of the first branch channel and a second mounting groove facing the opening of the second branch channel are respectively arranged on the connecting pipe,

the first channel pipe penetrates through the connecting pipe and is fixedly connected with the connecting pipe, and part of the pipeline of the first channel pipe extends out of the first mounting groove and penetrates through the first branch channel to be communicated with the outside;

the second channel pipe penetrates through the connecting pipe and is fixedly connected with the connecting pipe, and part of the pipeline of the second channel pipe extends out of the second mounting groove and penetrates through the second branch channel to be communicated with the outside.

Alternatively, in the above-mentioned operation section of the endoscope,

the far end of the first mounting groove is T-shaped or Y-shaped, and the first channel pipe is clamped at the far end of the first mounting groove;

and/or the number of the groups of groups,

the distal end of the second mounting groove is T-shaped or Y-shaped, and the second channel pipe is clamped at the distal end of the second mounting groove.

Optionally, in the operation portion of the endoscope, the connecting tube protrudes radially outwards corresponding to a distal end region of the first mounting groove to form a first mounting portion;

the first channel pipe comprises a tee joint, the tee joint is provided with a positioning surface which is used for being attached to the inner wall surface of the first installation part, and the positioning surface is fixedly connected with the first installation part through a first fixing part; one of the interfaces of the tee joint is inclined relative to the positioning surface in a direction extending out of the first mounting groove.

Optionally, in the operation portion of the endoscope, the second channel tube includes a two-way tube, the two-way tube has a first positioning surface for fitting with an inner wall surface of the connecting tube, a protrusion is provided in a middle portion of the first positioning surface, and an outer edge of the protrusion is fitted with an inner periphery of a distal end of the second mounting groove.

Optionally, in the operation portion of the endoscope, second fixing portions are respectively disposed on two sides of the first positioning surface, where the two sides are located on the protrusion, so as to be fixedly connected with the connecting tube.

Optionally, in the operation portion of the endoscope, the first branch channel and the second branch channel are arranged in a staggered manner along an axial direction of the main shaft channel, and the first branch channel is close to a base end side of the main shaft channel with respect to the second branch channel.

Alternatively, in the operation section of the endoscope described above, the first branch passage and the second branch passage are located on the same side of the housing.

Optionally, in the operation portion of the endoscope, the first channel tube is a treatment instrument channel tube; the second channel pipe is a water bag water supply channel pipe.

Optionally, in the operation portion of the endoscope, the housing includes an upper casing, a middle casing, and a lower casing that are sequentially connected from a base end side to a distal end side, the first branch channel is provided in the middle casing, and the second branch channel is provided in the lower casing;

the connecting pipe is fixedly connected with the upper housing through a relay component;

the inner wall of the middle housing is provided with a first clamping table protruding in the radial direction;

the operation part further comprises a locking sealing pipe, and the locking sealing pipe is fixedly sleeved outside the connecting pipe and props against the far end of the first clamping table so as to axially lock the upper housing and the middle housing.

Optionally, in the operation portion of the endoscope, the locking seal tube axially spans a joint between the middle housing and the lower housing, and a seal member for sealing the joint between the middle housing and the lower housing is sleeved on an outer periphery of the locking seal tube.

Optionally, in the operation part of the endoscope, the endoscope further comprises a locking ring, wherein the inner wall of the lower housing is provided with a second clamping table protruding along the radial direction, and the locking ring is fixedly connected to the distal end of the connecting pipe and abuts against the distal end of the second clamping table so as to axially lock the lower housing, the middle housing and the upper housing.

The application this application provides an operating portion of endoscope, through setting up the connecting pipe that can wear to locate in the shell, first passageway pipe and second passageway pipe respectively with connecting pipe fixed connection to correspond first branch channel and second branch channel on the connecting pipe and set up first mounting groove and second mounting groove respectively, so that the partial pipeline of first passageway pipe and the partial pipeline of second passageway pipe stretch out from first mounting groove and second mounting groove respectively, and wear to locate first branch channel and second branch channel, so that operating personnel carries out corresponding operation. In summary, in the operating portion that this application provided, first passageway pipe and second passageway pipe all be fixed in same connecting pipe can, have simplified connection structure, be convenient for the assembly.

In order to achieve the above object, the present application also provides an endoscope including any one of the above operating portions. Since the above-described operation portion has the above-described technical effects, an endoscope having the operation portion should have the corresponding technical effects.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing a part of the structure of an insertion portion and an operation portion of an endoscope according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of line I-I of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the line II-II in FIG. 2;

FIG. 4 is a perspective view of one of the view angles of the connection tube;

fig. 5 is a perspective view of another view of the connection tube;

FIG. 6 is a perspective view of one of the view angles of the first and second channel pipes being fixed to the connection pipe;

FIG. 7 is a perspective view of the first and second channel pipes secured to the connecting pipe from another perspective;

FIG. 8 is a schematic view of a tee junction;

FIG. 9 is a schematic diagram of a two-way connection;

FIG. 10 is a schematic diagram of a two-way structure;

FIG. 11 is a schematic view of the structure of the locking seal tube.

The figures are marked as follows:

an insertion section 1, an insertion tube 101, a bending section 102, a head end section 103, an ultrasonic transducer unit 103a, a balloon member 103b, and an operation section 2;

the first channel pipe 3, the tee 31, the first fixing part 31a, the positioning surface 31b, the first interface 31c, the second interface 31d, the third interface 31f, the clamp pipe 32, the clamp post 33, the tee connection assembly 34, the clamp connection pipe 34a, the clamp connection pipe lining 34b, the clamp connection nut 34c, the clamp joint cap 35, the sealing part 36, the screw 37 and the suction channel 38;

the second channel pipe 4, the two-way pipe 41, the second fixing part 41a, the first positioning surface 41c, the second positioning surface 41b, the first interface 41d, the second interface 41e, the clamping structure 41f, the water supply pipe 42, the water bag water supply connecting column 43, the two-way connecting component 44, the water bag connecting pipe 44a, the water bag connecting pipe lining 44b, the connecting pipe connecting nut 44c, the sealing component 45 and the screw 46;

a housing 5, a middle housing 52, a lower housing 51;

locking the sealing tube 6, sealing the groove position 61 and the operation position 62;

a connecting pipe 7, a first mounting groove 71, a second mounting groove 72, a first weight-reducing groove 73, a second weight-reducing groove 74, a first mounting portion 75, a second mounting portion 76, and a positioning wall 77;

the sealing ring 8, the spring tube 9, the locking ring 10, the sealing part 11, the rear joint ring 12, the sealing part 13, the rear joint ring locking ring 14 and the protective sleeve 15.

Detailed Description

The embodiment of the application discloses an endoscope and an operation part thereof, which are used for facilitating the assembly of two or more channel pipes.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The endoscopes provided herein may include, but are not limited to, ultrasound bronchoscopes. In this context, unless otherwise specified, in a state where the operation portion 2 is held vertically, the upper side of the relevant structure is the base end, and the lower side is the distal end.

Specifically, referring to fig. 1, the endoscope includes: an insertion part 1, an operation part 2 and a light guide part. The insertion part 1 includes an insertion tube 101 with graduations, a bending part 102 capable of swinging in different directions, and a hard head end 103 for feeding back diagnostic information. An ultrasonic transducer unit 103a is provided at the top of the head end 103 in the axial direction of the insertion portion, and a balloon member 103b is provided on the outer periphery of the ultrasonic transducer unit 103a, into which an ultrasonic transmission medium can be injected. The operation unit 2 is provided on the proximal end side of the insertion unit 1, and is configured to be held by an operator and to control functions related to the ultrasonic endoscope, such as controlling bending of the bending unit 102, controlling image capturing by an image capturing device in the head end 103, and performing air and/or water feeding operations. The light guide section is connected to the operation section 2 through a light guide hose, and is connected to an endoscope light source and an endoscope processing apparatus to transmit illumination light, an endoscope image signal, an endoscope control signal, an electric signal, and the like.

Specifically, in one embodiment, as shown in fig. 1 to 3, the operation section 2 of the endoscope provided herein includes a housing 5, a connection tube 7, a first channel tube 3, and a second channel tube 4. Wherein, the shell 5 is internally provided with a main shaft channel, a first branch channel and a second branch channel, and the first branch channel and the second branch channel are respectively communicated with the main shaft channel. The connecting pipe 7 is arranged in the main shaft channel in a penetrating way and is fixedly connected with the shell 5 in the axial direction of the main shaft channel, a first mounting groove 71 and a second mounting groove 72 are respectively arranged on the connecting pipe 7, the first mounting groove 71 is opened towards the first branch channel, and the second mounting groove 72 is opened towards the second branch channel. The first channel pipe 3 is inserted into the connecting pipe 7 and fixedly connected with the connecting pipe 7, and a part of the pipeline of the first channel pipe 3 extends out of the first mounting groove 71 and is inserted into the first branch channel so as to be communicated with the outside. The second channel pipe 4 is inserted into the connecting pipe 7 and fixedly connected with the connecting pipe 7, and a part of the pipeline of the second channel pipe 4 extends out of the second mounting groove 72 and is inserted into the second branch channel so as to be communicated with the outside. The first channel pipe 3 may be a treatment tool channel pipe, and the second channel pipe 4 may be a water bag water supply channel pipe. It will be appreciated that the first channel tube 3 and the second channel tube 4 may also be used in other types of endoscopes, but are not limited thereto, based on different application requirements. The signal, light guide, fluid supply, ultrasonic cable, pipeline and other internal objects which are respectively arranged in the insertion part 1 and the operation part 2 are not shown and all penetrate through the connecting pipe 7. A spring tube 9 or wire rope for stretching the end of the head also penetrates the inside of the connection tube 7.

The application this application provides an operating portion 2 of endoscope, through setting up the connecting pipe 7 that can wear to locate in the shell 5, first passageway pipe 3 and second passageway pipe 4 respectively with connecting pipe 7 fixed connection to correspond first branch channel and second branch channel on connecting pipe 7 and set up first mounting groove 71 and second mounting groove 72 respectively, so that the partial pipeline of first passageway pipe 3 and the partial pipeline of second passageway pipe 4 stretch out from first mounting groove 71 and second mounting groove 72 respectively, and wear to locate first branch channel and second branch channel, so that operating personnel carries out corresponding operation. In summary, the operation portion 2 provided in the present application, the first channel tube 3 and the second channel tube 4 are all fixed on the same connecting tube 7, so that the connection structure is simplified, and the assembly is convenient.

In one embodiment, referring to fig. 4-7, the distal end of the first mounting groove 71 is T-shaped or Y-shaped, and the first channel tube 3 is locked to the distal end of the first mounting groove 71; and/or the distal end of the second mounting groove 72 is T-shaped or Y-shaped, and the second channel pipe 4 is locked to the distal end of the second mounting groove 72. Through setting up the distal end of first mounting groove 71 or second mounting groove 72 to be T shape or Y shape, T shape or Y shape structure can be from the cooperation of different directions with corresponding first passageway pipe 3 or second passageway pipe 4 realize the card and decide on the one hand, on the other hand, can provide operating space for the dismouting of first passageway pipe 3 or second passageway pipe 4, the assembly of being convenient for. In other embodiments, the first mounting groove 71 and the second mounting groove 72 may be provided in a uniform width configuration where the spindle passage or other configuration is capable of meeting assembly requirements.

In one embodiment, referring to fig. 4-7 and 8, the connecting tube 7 protrudes radially outwardly corresponding to the distal end region of the first mounting groove 71 to form a first mounting portion 75; the first passage pipe 3 includes a tee 31, the tee 31 has a positioning surface 31b for fitting with an inner wall surface of the first mounting portion 75, and the positioning surface 31b is fixedly connected with the first mounting portion 75 by a first fixing portion 31 a; one of the interfaces of the tee 31 is inclined with respect to the positioning surface 31b in a direction extending out of the first mounting groove 71. The connection pipe 7 is projected in the radial direction to form a first mounting portion 75 corresponding to the distal end region of the first mounting groove 71 to be positioned in contact with the positioning surface 31 b. By providing the projecting structure, the positioning surface 31b of the tee 31 is fitted to the first mounting portion 75, and is positioned in contact with the first mounting portion in the axial direction, and at the same time, the positioning function in contact with the first mounting portion in the circumferential direction is also achieved. The fixing of the first channel pipe 3 and the connecting pipe 7 is firmer, and even if the outside of the first channel pipe 3 is subjected to the impact force of torsion along the axial direction, the connection firmness of the first channel pipe 3 can be ensured, thereby ensuring the liquid tightness problem of the communicating part of the first channel pipe 3. The first fixing portion 31a may be a screw hole, and locks the tee 31 with the connection pipe 7 by a screw 37.

The first channel pipe 3 comprises a tee joint 31, specifically, a first interface 31c of the tee joint 31 is in sealing connection with a first connecting pipe of the tee joint, a second interface 31d is in sealing connection with a second connecting pipe of the tee joint, and a third interface 31f can be in sealing connection with a third connecting pipe of the tee joint according to requirements. The second connection port 31d and the third connection port 31f are opposite in direction, so that the extending directions of the tee second connection pipe and the tee third connection pipe are opposite, and the tee second connection pipe and the tee third connection pipe can specifically extend along the spindle channel. The first interface 31c is inclined with respect to the positioning surface 31b in a direction of protruding the first mounting groove 71 so that the tee first adapter is protruded from the first mounting groove 71. The first interface 31c is communicated with the first connecting pipe of the tee joint, the second interface 31d is communicated with the second connecting pipe of the tee joint, and the third interface 31f can be communicated with the third connecting pipe of the tee joint according to requirements, so that the functions of inserting surgical instruments into the head end part, conveying ultrasonic transmission media and the like through the first channel pipe 3 are realized. When the first channel tube 3 is a treatment tool channel tube, the corresponding three-way first connection tube may be a forceps channel column 33, the three-way second connection tube may be a forceps channel tube 32, and the three-way third connection tube may be an aspiration channel 38. However, it will be appreciated that the first channel tube 3 is not limited to a treatment instrument channel tube, and the corresponding three-way first connection tube, three-way second connection tube, and three-way third connection tube may be used in other types of endoscopes, based on different application requirements.

Specifically, the connection between the tee 31 and the tee second connecting pipe can be through a tee connecting assembly 34, and the tee connecting assembly 34 comprises a tee main pipe connecting pipe, a tee main pipe connecting pipe lining and a tee main pipe connecting nut. The tee 31 may be provided with a locking structure to threadably connect with the tee first adapter. A tee joint cap is arranged in cooperation with the tee joint first connecting pipe, and sealing parts 36 can be respectively arranged between the tee joint first connecting pipe and the tee joint cap and between the tee joint cap and the shell 5 for sealing. Taking the first channel pipe 3 as an example of a treatment tool channel pipe, the three-way main pipe connection pipe is specifically a forceps channel connection pipe 34a, the three-way main pipe connection pipe liner is specifically a forceps channel connection pipe liner 34b, the three-way main pipe connection nut is specifically a forceps channel connection nut 34c, and the three-way joint cap is specifically a forceps channel joint cap 35.

In one embodiment, referring to fig. 4-7, 9 and 10, the second channel tube 4 includes two passages 41, the two passages 41 have a first positioning surface 41c for fitting with the inner wall surface of the connecting tube 7, and a protrusion is provided at a middle portion of the first positioning surface 41c, and an outer edge of the protrusion is engaged with an inner periphery of a distal end of the second mounting groove 72. The distal end of the second mounting groove 72 forms a second mounting portion 76, the outer edge of the protrusion can be engaged with the inner periphery of the second mounting portion 76, the side wall of the protrusion forms a second positioning surface 41b for engaging with the distal end inner periphery of the second mounting groove 72, the bottom wall of the protrusion forms a third positioning surface engaging with the distal end inner periphery of the second mounting groove 72, that is, three side walls adjacent to the protrusion are respectively in contact positioning with three side inner walls of the distal end of the second mounting groove 72, that is, positioning walls 77, so as to play the roles of axial and circumferential limitation. The first positioning surface 41c can be bonded to the inner wall surface of the connection pipe 7 to perform a circumferential positioning function. In summary, through the cooperation of two-way 41 and connecting pipe 7 for the fixed more firm of second passageway pipe 4 and connecting pipe 7, even under the outside impact force circumstances of torsion along the axial, also can guarantee the connection fastness of second passageway pipe 4, thereby guarantee the liquid tightness problem of second passageway pipe 4 intercommunication position. And the two-way device 41 is positioned by utilizing the inner wall of the distal end of the second mounting groove 72, so that the structure is simple and the positioning is reliable.

The second channel pipe 4 comprises a two-way pipe 41, specifically, a first interface 41d of the two-way pipe 41 is in sealing connection with a first connecting pipe of the two-way pipe, and a second interface 41e is in sealing connection with a second connecting pipe of the two-way pipe. Wherein the second interface 41e is inclined with respect to the first interface 41d in a direction of protruding the second mounting groove 72 so that the two-way second adapter is protruded from the second mounting groove 72. The first interface 41d is communicated with a two-way first connecting pipe, the two-way first connecting pipe extends along the axial direction of the main shaft channel, the second interface 41e is communicated with a two-way second connecting pipe, and the two-way second connecting pipe extends out of the second mounting groove 72, so that the functions of inserting a surgical instrument into the head end part, conveying ultrasonic transmission media and the like through the second channel pipe 4 are realized. When the second channel pipe 4 is a water-bag water-delivering channel pipe, the corresponding two-way first connecting pipe may be a water-delivering pipe 42, the two-way second connecting pipe may be a water-bag water-delivering connecting column 43, such as a water-bag luer connecting column, and the first interface 41d and the second interface 41e of the two-way pipe 41 are respectively communicated with the water-bag water-delivering connecting column 43 and the water-delivering pipe 42, so as to realize the function of delivering ultrasonic transmission media from the water-bag water-delivering channel to the water-bag member 103b at the head end. However, it will be appreciated that the second channel tube 4 is not limited to a water bladder water channel tube, and the respective two-way first connection tube and two-way second connection tube may be not limited thereto in other types of endoscopes based on different application requirements.

Further, the first positioning surface 41c is provided with second fixing portions 41a on both sides of the protrusion, respectively, to be fixedly connected with the connection pipe 7. By providing the second fixing portion 41a on the first positioning surface 41c, the two-way pipe 41 and the connection pipe 7 can be reliably locked. And the second fixing parts 41a are arranged at two ends of the protrusion, so that positioning effect can be provided from two sides of the protrusion, connection firmness is ensured, and liquid tightness of the communication part of the channel is ensured. The second fixing portion 41a may be a screw hole, and locks the two-way portion 41 with the connection pipe 7 by the screw 46. Screw holes are correspondingly formed in the connecting pipe 7, and the rotation and pressing limitation of the two-way 41 valve body is realized through the matching of the inner circumferential surface of the screw holes with the first positioning surface 41c and the second positioning surface 41 b. Even if the outside of the channel is subjected to impact force which is twisted along the axial direction, the connection firmness of the channel can be ensured, so that the liquid tightness problem of the communication part of the channel is ensured. The second passage pipe 4 is locked by the second fixing portions 41a located at both sides of the projection in the abutting state, thereby preventing the second passage 41 from rotating under the action of external force.

Specifically, the connection between the two-way pipe 41 and the two-way second connecting pipe may be a clamping connection, for example, a clamping structure 41f is disposed on the two-way pipe 41 to be clamped with the two-way second connecting pipe. The connection between the two-way pipe 41 and the two-way first connecting pipe can be specifically realized through a two-way connecting assembly 44, wherein the two-way connecting assembly 44 comprises a two-way main pipe connecting pipe, a two-way main pipe connecting pipe lining and a two-way main pipe connecting nut. To ensure sealing, the two-way second connection piece can be sealed with the housing 5 by the provision of a plurality of sealing elements 45. Taking the second channel pipe 4 as a water bag water supply channel pipe as an example, the two-way main pipe connecting pipe is specifically a water bag connecting pipe 44a, the two-way main pipe connecting pipe liner is specifically a water bag connecting pipe liner 44b, and the two-way main pipe connecting nut is specifically a connecting pipe connecting nut 44c.

In one embodiment, the connecting pipe 7 is provided with a weight-reducing groove corresponding to the first mounting groove 71 and the second mounting groove 72. Specifically, 1 or more first weight-reducing grooves 73 are provided in the circumferential direction corresponding to the first mounting grooves 71, and the strength of the connection pipe 7 is ensured while weight reduction is achieved. Accordingly, one or more second weight-reducing grooves 74 may be provided in the corresponding circumferential direction of the second mounting groove 72.

In one embodiment, the first branch channel and the second branch channel are arranged in a staggered manner along the axial direction of the main shaft channel, and the first branch channel is close to the base end side of the main shaft channel relative to the second branch channel. The first branch channel and the second branch channel are arranged in an axial staggered manner, namely, the two channels are axially arranged in the main shaft channel, so that the assembly of the operation part 2 is more convenient, the locking mode of parts is more reliable, and the installation of the parts and the operation of medical staff are facilitated. Since the first channel pipe 3 having the tee 31 is usually a treatment instrument channel pipe, it is arranged above the water bag water supply channel pipe, and it is possible to avoid puncturing the water bag water supply pipe when the instrument is inserted.

In one embodiment, the first branch channel and the second branch channel are positioned on the same side of the housing, thereby facilitating the operations of water delivery, instrument treatment and the like by an operator. Specifically, the first mounting groove 71 and the second mounting groove 72 are located at axially coplanar same sides of the spindle channel.

In one embodiment, the housing 5 includes an upper case, a middle case 52, and a lower case 51 connected in this order from a base end side to a distal end side, a first branch passage is provided to the middle case 52, and a second branch passage is provided to the lower case 51; the connecting pipe 7 is fixedly connected with the upper housing through a relay component; the inner wall of the middle housing 52 has a first clamping table protruding in the radial direction; the operation part further comprises a locking sealing tube 6, wherein the locking sealing tube 6 is tightly sleeved outside the connecting tube 7 and abuts against the distal end of the first clamping table so as to axially lock the upper housing and the middle housing 52. The shell 5 adopts split type structure setting, is convenient for the assembly of inside each part. And through the setting of locking seal tube 6, cooperate with first bayonet catch, lock upper housing and well housing 52 along axial, convenient assembling, locking is reliable. The locking sealing tube 6 can be in threaded connection with the connecting tube 7, and the locking sealing tube 6 is sleeved outside the connecting tube 7 and screwed when the locking sealing tube is assembled, so that reliable locking of the locking sealing tube and the connecting tube can be realized.

In one embodiment, the locking seal 6 axially spans the junction of the middle and lower shells 52, 51, and the outer periphery of the locking seal 6 is sleeved with a seal for sealing the junction of the middle and lower shells 52, 51. That is, the locking seal pipe 6 functions not only to lock the upper and middle cases 52 but also to seal the middle and lower cases 52 and 51. Referring to fig. 11, the sealing structure between the locking seal 6 and the lower and middle shells 51 and 52 may be, for example: sealing groove positions 61 are respectively formed on two sides of the locking sealing tube 6 corresponding to the connecting position of the middle housing 52 and the lower housing 51, and sealing rings 8 are arranged in the sealing groove positions 61, namely sealing rings 8 are adopted as sealing elements, so that sealing between the locking sealing tube 6 and the lower housing 51 and the middle housing 52 is realized, and the inside of the housing 5 is sealed and isolated from the outside. Through the setting of locking seal tube 6, the assembly of being convenient for, sealed reliable.

In order to facilitate the disassembly and assembly of the locking seal tube 6, an operation position 62 is specifically provided on the locking seal tube 6, so that the locking seal tube 6 can be disassembled and assembled by a tool in a state of being sleeved in the lower housing 51 and the middle housing 52. The operation position 62 may be a groove provided on the distal end face of the locking seal tube 6, so that the tool is inserted into the groove to drive the locking seal tube 6 to rotate, so that the other end face of the locking seal tube 6 abuts against or is far away from the first clamping table. Of course, depending on the fixing manner of the locking seal 6 and the connecting tube 7, the structure of the operating position 62 may be set correspondingly.

In one embodiment, the operating part 2 further comprises a locking ring 10, the inner wall of the lower housing 51 has a second clamping table protruding in the radial direction, and the locking ring 10 is fixedly connected to the distal end of the connecting tube 7 and abuts against the distal end of the second clamping table to axially lock the lower housing 51, the middle housing 52 and the upper housing. The locking ring 10 can be in threaded connection with the connecting pipe 7, and the locking ring 10 is sleeved outside the connecting pipe 7 and screwed during assembly, so that reliable locking of the locking ring and the connecting pipe is realized. Meanwhile, since the inner wall of the lower housing 51 has the second clamping table protruding in the radial direction, the locking ring 10 is locked, and simultaneously, the end part of the locking ring abuts against the distal end of the second clamping table, so that the axial displacement of the lower housing 51 is limited, the axial locking of the lower housing 51 is realized, and the lower housing 51, the middle housing 52 and the upper housing are further locked in the axial direction. The operation part 2 adopts a mode of locking the sealing tube 6 and the locking ring 10 in a matching and grading mode, so that the whole locking and sealing effect of the operation part 2 is better.

In other embodiments, if the space inside the spindle passage is enough, the locking seal tube 6 may be directly designed by the structure of the lower housing 51 without providing the locking seal tube 6, that is, the structure of the locking seal tube 6 is combined with the lower housing 51, and the same material may be specifically adopted, so that the above functions may still be achieved.

Specifically, the distal end of the lower housing 51 may be connected to the protective sleeve 15, the rear joint ring 12 is disposed in the protective sleeve 15 and connected to the connection pipe 7, the rear joint ring 12 may be locked in the axial direction by the rear joint ring locking ring 14, and the sealing member 13 may be disposed between the rear joint ring 12 and the protective sleeve 15 to seal.

Based on the operating portion 2 provided in the above-described embodiments, the present application also provides an endoscope including the insertion portion 1, the light guide portion, and any one of the operating portions 2 of the above-described embodiments. Since the endoscope employs the operating portion 2 in the above-described embodiment, the endoscope is advantageous in view of the above-described embodiment.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. An operation unit of an endoscope, comprising:

a housing (5) in which a main shaft passage, a first branch passage and a second branch passage are formed, the first branch passage and the second branch passage being respectively communicated with the main shaft passage;

a connecting pipe (7) which is arranged in the main shaft channel in a penetrating way and is fixedly connected with the shell (5), a first mounting groove (71) which faces the opening of the first branch channel and a second mounting groove (72) which faces the opening of the second branch channel are respectively arranged on the connecting pipe (7),

the first channel pipe (3) is arranged in the connecting pipe (7) in a penetrating way and is fixedly connected with the connecting pipe (7), and part of pipelines of the first channel pipe (3) extend out of the first mounting groove (71) and are arranged in the first branch channel in a penetrating way so as to be communicated with the outside;

the second channel pipe (4) is arranged in the connecting pipe (7) in a penetrating way and fixedly connected with the connecting pipe (7), and part of pipelines of the second channel pipe (4) extend out of the second mounting groove (72) and are arranged in the second branch channel in a penetrating way so as to be communicated with the outside.

2. The operation section of an endoscope according to claim 1, wherein,

the far end of the first mounting groove (71) is T-shaped or Y-shaped, and the first channel tube (3) is clamped at the far end of the first mounting groove (71);

and/or the number of the groups of groups,

the distal end of the second mounting groove (72) is T-shaped or Y-shaped, and the second channel pipe (4) is clamped at the distal end of the second mounting groove (72).

3. The operating portion of an endoscope according to claim 2, wherein the connecting tube (7) protrudes radially outwardly corresponding to a distal end region of the first mounting groove (71) to form a first mounting portion (75);

the first channel pipe (3) comprises a tee joint (31), the tee joint (31) is provided with a positioning surface (31 b) for being attached to the inner wall surface of the first installation part (75), and the positioning surface (31 b) is fixedly connected with the first installation part (75) through a first fixing part (31 a); one of the interfaces of the tee (31) is inclined relative to the positioning surface (31 b) towards the direction of extending out of the first mounting groove (71).

4. The operation section of an endoscope according to claim 2, wherein the second channel tube (4) includes a two-way tube (41), the two-way tube (41) has a first positioning surface (41 c) for fitting with an inner wall surface of the connection tube (7), and a protrusion is provided in a middle portion of the first positioning surface (41 c), and an outer edge of the protrusion is fitted with an inner periphery of a distal end of the second mounting groove (72).

5. The operation section of an endoscope according to claim 4, wherein second fixing sections (41 a) are provided on both sides of the projection on the first positioning surface (41 c) to be fixedly connected with the connection tube (7).

6. The operation section according to any one of claims 1 to 5, wherein the first branch passage and the second branch passage are arranged in a staggered manner in an axial direction of the main shaft passage, and the first branch passage is located closer to a base end side of the main shaft passage than the second branch passage.

7. An operating section of an endoscope according to claim 6, characterized in that the first branch channel and the second branch channel are located on the same side of the housing (5).

8. The operation section of an endoscope according to claim 6, wherein the first channel tube (3) is a treatment instrument channel tube; the second channel pipe (4) is a water sac water supply channel pipe.

9. The operation section of an endoscope according to claim 6, wherein the housing (5) includes an upper case, a middle case (52), and a lower case (51) connected in this order from a base end side to a distal end side, the first branching passage is provided to the middle case (52), and the second branching passage is provided to the lower case (51);

the connecting pipe (7) is fixedly connected with the upper housing through a relay component;

the inner wall of the middle housing (52) is provided with a first clamping table protruding along the radial direction;

the operation part further comprises a locking sealing pipe (6), and the locking sealing pipe (6) is tightly sleeved outside the connecting pipe (7) and abuts against the far end of the first clamping table so as to axially lock the upper housing and the middle housing (52).

10. An operation portion of an endoscope according to claim 9, wherein said lock seal tube (6) axially spans a junction of said middle housing (52) and said lower housing (51), and a seal for sealing the junction of said middle housing (52) and said lower housing (51) is provided around an outer periphery of said lock seal tube (6).

11. The operating portion of an endoscope according to claim 9, characterized by further comprising a locking ring (10), an inner wall of the lower housing (51) having a radially protruding second clamping abutment, the locking ring (10) being fixedly connected to the distal end of the connecting tube (7) and abutting against the distal end of the second clamping abutment to axially lock the lower housing (51), the middle housing (52) and the upper housing.

12. An endoscope comprising an insertion portion (1), an operation portion (2) and a light guide portion, wherein the operation portion (2) is the operation portion (2) according to any one of claims 1 to 11.