Double-channel connecting assembly and endoscope

Abstract

The utility model discloses a two-channel connecting assembly and an endoscope, the two-channel connecting assembly comprises a connecting-out piece and at least three connecting-in pieces, and the connecting-out piece is provided with a connecting-out channel in a penetrating mode; one end of each connecting-in piece is connected with the connecting-out piece and is provided with a connecting-in channel in a penetrating manner; the connecting-out part is used for being installed on an insertion main body of the endoscope, the connecting-in part or the connecting-out part is used for being installed on an operation main body of the endoscope, and after connection, at least one connecting-in channel is communicated with the connecting-out channel so that an external instrument can penetrate through the connecting-in channel and / or fluid can flow through the connecting-in channel and the connecting-out channel. According to the utility model, when the connecting-in channels of the at least two connecting-in pieces and the connecting-out channel of the connecting-out piece are matched together for inserting at least two external instruments respectively, the operation of the two external instruments cannot be influenced by liquid feeding, suction and the like; and at least two external instruments can be inserted more smoothly, and the operations do not interfere with each other.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope technical field, concretely relates to a double channel connection assembly and endoscope. BACKGROUND

[0002] As a kind of minimally invasive examination and treatment medical instrument, endoscope is mainly used for diagnosing and treating various diseases. By the natural orifice of human body or through the small incision of surgery into the body, doctor can clearly observe the condition in the body, diagnose various diseases and various auxiliary treatments, such as polypectomy, lithotripsy etc.

[0003] However, the existing endoscope is generally provided with only one working channel, and in the diagnosis and treatment process, not only instrument needs to be inserted into single working channel, but also water injection cleaning or liquid suction operation needs to be carried out to keep the vision clear during diagnosis and treatment. Especially for ureteropyeloscope in endoscope, the demand for thin scope body is higher and higher, which leads to strict requirement for the size of working channel. When instrument has been inserted into single working channel, it will seriously affect the quality and efficiency of liquid sending, suction and other operations of the working channel.

[0004] Therefore, the prior art such as patent 202020425536.9 discloses a multifunctional double-channel endoscope. The endoscope separates a channel in the inner layer of insertion part, which can solve the above problems to a certain extent, but the separated channel can only be used for suction function, cannot realize instrument insertion, and cannot realize medical operation requiring double-instrument cooperation. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a double-channel connection assembly and endoscope, which aims to solve the problem that traditional endoscope cannot realize double-instrument medical cooperation.

[0006] To achieve the above purpose, the utility model provides a double-channel connection assembly, which comprises:

[0007] An outlet piece is provided with an outlet channel; and,

[0008] At least three inlet pieces are connected to the outlet piece at one end, and each inlet piece is provided with an inlet channel;

[0009] Wherein, the outlet piece is used to be installed to the insertion main body of endoscope, the inlet piece or the outlet piece is used to be installed to the operation main body of endoscope, and at least one inlet channel and the outlet channel are in communication after connection, so as to provide external instrument insertion and / or fluid circulation.

[0010] Optionally, one of the access members is a first access member, the access channel of the first access member is connected in communication at a port of the outlet channel and extends in the same direction as the outlet channel;

[0011] The access channels of the access members other than the first access member are connected in communication at a side wall of the outlet channel and extend in different directions respectively with respect to the outlet channel.

[0012] Optionally, at least the first access member and the outlet member are integrally formed; and / or,

[0013] Among the access members other than the first access member, the access channels of at least two of the access members extend in different directions with respect to the direction of the outlet channel.

[0014] Optionally, the inner diameters of the access channels of at least two of the access members are different; and / or,

[0015] The lengths of the access channels of at least two of the access members are different.

[0016] Optionally, at least one of the access members is provided with detachable connection structure at a portion away from the outlet member; and / or,

[0017] At least one of the access members is provided with a locking mechanism for sealing and locking an inserted external instrument at the access channel.

[0018] Optionally, the access channel of at least one of the access members comprises a first channel segment and a second channel segment connected in communication in sequence in a direction close to the outlet member, the inner diameter of the first channel segment is greater than the inner diameter of the second channel segment, so as to form a step surface at the connection between the two channel segments; the double-channel connection assembly further comprises a locking mechanism, the locking mechanism comprises:

[0019] a resilient stop ring provided in the first channel segment and supported at the step surface;

[0020] a rigid stop ring provided in the first channel and supported at an end of the resilient stop ring opposite to the step surface; and,

[0021] a joint member having an annular slot formed at an end thereof, so as to define an outer protrusion and an inner protrusion by the annular slot, when the annular slot is inserted into the access member, the outer protrusion is sleeved outside the access member, and the inner protrusion extends into the first channel segment and is supported at the end of the rigid stop ring opposite to the resilient stop ring;

[0022] The elastic retaining ring, the rigid retaining ring, and the inner protrusion are respectively provided with through holes, which are connected to the second channel segment. The insertion depth of the annular slot and the access member is adjustable so that after the external instrument is inserted into the second channel segment through the through hole, the insertion depth of the annular slot and the access member is increased by external force. The inner protrusion drives the rigid retaining ring to squeeze the elastic retaining ring, causing the elastic retaining ring to deform and squeeze the external instrument.

[0023] Optionally, one of the stepped surface and the elastic retaining ring is provided with a first recess, and the other is provided with a first convex portion, wherein the first recess and the first convex portion are connected in a recessed-convex manner; and / or,

[0024] One of the elastic retaining ring and the rigid retaining ring has a second recess, and the other has a second convex portion, wherein the second recess and the second convex portion are connected in a recessed-convex manner; and / or,

[0025] One of the rigid retaining ring and the inner convex part is provided with a third concave part, and the other is provided with a third convex part. The third concave part and the third convex part are connected in a concave-convex manner.

[0026] In addition, to achieve the above objectives, this utility model also provides an endoscope, including...

[0027] Operating entity;

[0028] Insert the main body; and,

[0029] The dual-channel connection assembly described above connects the operating body and the insertion body respectively.

[0030] Optionally, the insertion body is provided with at least two extension channels along its axial direction, and the extension channels are arranged at radial intervals along the insertion body;

[0031] Each of the extended channels is connected to the output channel and is configured to correspond one-to-one with at least two of the access channels.

[0032] Optionally, the insertion body is further provided with an installation channel along its axial direction, the installation channel being located on the radial side of each of the extension channels;

[0033] The endoscope also includes an imaging device and at least two illumination devices, both of which are installed at the installation channel, and each illumination device is arranged in a corresponding manner to each of the adjacent extension channels.

[0034] The technical scheme provided by the utility model discloses when installing the double-channel connecting assembly to the operating main body and the insertion main body of the endoscope, the access channel and the extension channel on the insertion main body realize the communication connection, because the access piece is arranged as at least two, when the access channel of any one access piece and the access channel of the access piece jointly cooperate to supply the external instrument insertion, the remaining at least two access pieces can be used as auxiliary liquid delivery, suction and the like, and do not affect the operation of the external instrument, when the access channel of at least two access pieces and the access channel of the access piece jointly cooperate to supply at least two external instruments insertion respectively, in the same way, on one hand, the remaining at least one access piece can be used as auxiliary liquid delivery, suction and the like, and does not affect the operation of the two external instruments, on the other hand, the separate arrangement of the access channel can make the insertion of the at least two external instruments more smooth and the operation does not interfere with each other, and help to improve the quality of medical operation. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0036] Figure 1 It is a stereogram of an embodiment of the endoscope provided by the utility model;

[0037] Figure 2 It is Figure 1 It is the front view schematic diagram of the insertion main body at the head end thereof in the utility model;

[0038] Figure 3 It is Figure 1 It is the stereogram schematic diagram of the double-channel connecting assembly after the locking mechanism is taken out in the utility model;

[0039] Figure 4 It is Figure 1 It is the top view structural schematic diagram of the double-channel connecting assembly;

[0040] Figure 5 It is Figure 4 It is the sectional view structural schematic diagram of A-A in the utility model;

[0041] Figure 6 It is Figure 5 It is the enlarged structural schematic diagram of B in the utility model.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1 operating body; 2 insertion body; 210 first extension channel; 220 second extension channel; 230 mounting channel; 240 imaging device; 250 illuminating device; 3 dual-channel connecting assembly; 310 outcoming piece; 311 first outcoming channel; 312 second outcoming channel; 320 first incoming piece; 321 first incoming channel; 321a first channel segment; 321b second channel segment; 321c step surface; 321d first recess; 321e external thread; 330 second incoming piece; 331 second incoming channel; 340 third incoming piece; 341 third incoming channel; 350 fourth incoming piece; 360 locking mechanism; 360a through hole; 361 elastic stop ring; 361a first protrusion; 361b second protrusion; 362 rigid stop ring; 362a second recess; 362b third protrusion; 363 joint piece; 363a annular slot; 363b external protrusion; 363c internal protrusion; 363d third recess; 363e internal thread; 370 detachable connecting structure.

[0044] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0046] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0047] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0048] Please refer to Figures 1 to 6 The utility model provides a kind of double channel connection assembly 3 and endoscope applied by it. Among them, endoscope except above-mentioned double channel connection assembly 3, still include operating main body 1 and insertion main body 2.

[0049] Wherein, operating main body 1 refers to in the medical operation process, without intervention in patient's body, and can be held by operating personnel, to carry out the operation of insertion main body 2 and the external equipment etc. of being worn with.

[0050] Insertion main body 2 also refers to long tubular structure in the medical operation process, at least partially intervene in patient's body to reach sick part. Generally, insertion main body 2 is inserted and fixed in one end of operating main body 1. The end of insertion main body 2 away from operating main body 1 generally forms head end. Insertion main body 2 is generally provided with extension channel and installation channel 230 along its axial direction. Among them, installation channel 230 can be installed, for example, imaging device 240 and / or illumination device 250. Imaging device 240 also refers to the device for image acquisition in medical operation to sick part, can be but not limited to CMOS (Complementary Metal-Oxide-Semiconducto, complementary metal oxide semiconductor) image sensor. Illumination device 250 also refers to the device for lighting at sick part in medical operation, which can assist imaging device 240 to take image, can be but not limited to LED etc. built-in light source device, can also be optical fiber etc. device for guiding light of external light source device to head end.

[0051] In the design, the extension channel of the insertion body 2 and the dual-channel connecting assembly 3 jointly define a working channel of the endoscope. Specifically, the dual-channel connecting assembly 3 comprises an outlet piece 310 and at least three inlet pieces. The outlet piece 310 is provided with an outlet channel; one end of each inlet piece is connected with the outlet piece 310, and each inlet piece is provided with an inlet channel; wherein the outlet piece 310 is used to be installed to the insertion body 2 of the endoscope, the inlet piece or the outlet piece 310 is used to be installed to the operation body 1 of the endoscope, and after connection, at least one inlet channel and the outlet channel are in communication, so as to allow external instruments to be inserted and / or fluid to flow.

[0052] In the technical scheme, when the dual-channel connecting assembly 3 is installed between the operation body 1 and the insertion body 2 of the endoscope, the outlet channel and the extension channel on the insertion body 2 are in communication. Since there are at least two inlet pieces, when the inlet channel of any one of the inlet pieces and the outlet channel of the outlet piece 310 are used to insert external instruments, the remaining at least two inlet pieces can be used to assist in liquid delivery, suction, etc., without affecting the operation of the external instruments. When the inlet channels of at least two inlet pieces and the outlet channel of the outlet piece 310 are used to insert at least two external instruments, the remaining at least one inlet piece can be used to assist in liquid delivery, suction, etc., without affecting the operation of the two external instruments. On the other hand, the separate arrangement of the inlet channels allows the insertion of at least two external instruments to be smoother and not interfere with each other, which helps to improve the quality of medical operations.

[0053] It can be understood that the outlet piece 310 and each inlet piece are generally elongated, for example, which can be in the form of a tubular structure. At least a section of the outlet piece 310 away from each inlet piece can be used to connect and fix with the insertion body 2. After connection, the outlet channel can be directly in communication with the extension channel of the insertion body 2. Therefore, in actual application, when the dual-channel connecting assembly 3 is connected and fixed with the insertion body 2 through the outlet piece 310, the extension direction of the outlet channel and the direction of the extension channel (in the state that the insertion body 2 is not bent and deformed) are the same. Further, the central axis of the outlet channel is collinear with the central axis of the extension channel.

[0054] The double-channel connecting assembly 3 is provided with at least three access pieces. As described above, each access piece is in communication connection with an exit channel. Therefore, in an embodiment, only one exit channel can be provided. Then, based on this, all the access channels are in communication connection with the same exit channel. Alternatively, in an embodiment, at least two exit channels can be provided, but the number of provided exit channels is less than the number of access channels. Then, based on this, at least one of the access channels is in communication connection with one exit channel individually; at least two of the access channels need to be in communication connection with the same exit channel. Of course, in another embodiment, at least two exit channels can be provided, and the number of provided exit channels is the same as the number of access channels. Then, based on this, each access channel is in one-to-one correspondence with each exit channel.

[0055] It should be noted that when the number of exit channels of the exit piece 310 is at least two, the at least two exit channels can be directly defined by the same exit piece 310; or the at least two exit channels are defined by at least two exit pieces 310 respectively, and each exit piece 310 can be integrally formed or connected after being separately formed in a detachable or non-detachable manner. Of course, the above-mentioned access pieces and exit pieces 310 can also be integrally formed or connected after being separately formed in a detachable or non-detachable manner according to actual needs.

[0056] Similarly, as described above, the double-channel connecting assembly 3 is formed with at least three access channels. In an embodiment, only one extension channel can be provided. Then, based on this, one or at least two exit channels are in communication connection with the same extension channel. Alternatively, in an embodiment, at least two extension channels can be provided, but the number of provided extension channels is less than the number of access channels. Then, based on this, at least one of the access channels is in communication connection with one extension channel individually through an exit channel; at least two of the access channels need to be in communication connection with the same extension channel through one or at least two exit channels. Of course, in another embodiment, at least two extension channels can be provided, and the number of provided extension channels is the same as the number of access channels. Then, based on this, each access channel can be in one-to-one correspondence with each extension channel through one or at least two exit channels.

[0057] For better understanding, please refer to the following description of the embodiments of the application. Figures 1 to 5In the following embodiments, if not specifically stated, the dual-channel connection assembly 3 is provided with three access pieces, and the three access pieces are respectively the first access piece 320. Correspondingly, the access channels of the first access piece 320, the second access piece 330, and the third access piece 340 are respectively the first access channel 321, the second access channel 331, and the third access channel 341. Correspondingly, the outlet channels can be provided with two, which are respectively the first outlet channel 311 and the second outlet channel 312. The first access channel 321 and the second access channel 331 are in communication connection with the first outlet channel 311; the third access channel 341 is in communication connection with the second outlet channel 312. Correspondingly, the extension channels are provided with two, which are respectively the first extension channel 210 and the second extension channel 220. The first extension channel 210 and the second extension channel 220 are in communication connection with the first outlet channel 311.

[0058] Specifically, as Figures 3 to 6 stated, the first access piece 320 can be directly installed at the end of the outlet piece 310 away from the insertion body 2, and the channel opening of the first access channel 321 is in communication connection with the channel opening of the outlet channel. After connection, the extension direction of the first access channel 321 and the extension direction of the outlet channel can be set in the same direction. Further, the central axis of the first access channel 321 and the central axis of the outlet channel can be arranged in the same line.

[0059] In actual application, the central axes of the first access channel 321, the first outlet channel 311, and the first extension channel 210 can be preferably arranged in the same line. At this time, the working channel defined by the first access channel 321, the first outlet channel 311, and the first extension channel 210 is regarded as a higher priority instrument channel. That is, in actual application, if only a single external instrument is needed to perform a medical operation, the external instrument is first inserted into the working channel defined by the first access channel 321, the first outlet channel 311, and the first extension channel 210. If at least two external instruments are needed to perform a medical operation, one of the external instruments can be inserted into the working channel defined by the first access channel 321, the first outlet channel 311, and the first extension channel 210.

[0060] The second access member 330 can be installed at the side wall of the exit member 310, and after connection, the extension direction of the second access channel 331 is arranged obliquely relative to the extension direction of the first exit channel 311. Of course, the oblique angle between the two needs to be arranged within a reasonable range. If the oblique angle is too large, it is easy to cause a large bend when the external instrument is inserted into the first exit channel 311 through the second access channel 331, which on the one hand hinders the operation of continuing to insert; on the other hand, it is easy to cause the structure of the external instrument to be damaged or inconvenient to operate. Generally, for example, the angle between the second access channel 331 and the first exit channel 311 can be greater than 0° and less than 90°, and specifically can be between 30° and 60°. Of course further, the central axis of the second access channel 331 and the central axis of the first exit channel 311 are arranged as much as possible to be coplanar, so as to simplify the processing and forming between the second access member 330 and the exit member 310.

[0061] As known from the above, when the working channel defined by the first access channel 321, the first exit channel 311 and the first extension channel 210 is inserted into the external instrument, specifically, the working channel defined by the second access channel 331, the first exit channel 311 and the second extension channel 220 can be used as a fluid flow channel, for example, for liquid delivery or suction operation. Or it can also be that the working channel defined by the third access channel 341, the second exit channel 312 and the second extension channel 220 is used as a fluid flow channel, for example, for liquid delivery or suction operation.

[0062] In addition, since the second access channel 331 and the first access channel 321 do not share the same extension channel, in actual application, the working channel defined by the second access channel 331, the first exit channel 311 and the second extension channel 220 can be used as the second highest priority instrument channel. That is, when at least two external instruments need to perform medical operations, the first of each external instrument can be inserted into the working channel defined by the first access channel 321, the first exit channel 311 and the first extension channel 210; the second of each external instrument can be inserted into the working channel defined by the second access channel 331, the first exit channel 311 and the second extension channel 220.

[0063] As the same reason as above, the third access piece 340 can also be installed at the side wall of the access piece 310, and after connection, the extension direction of the third access channel 341 is arranged obliquely relative to the extension direction of the second access channel 312. Of course, since the third access channel 341, the second access channel 312 and the extension channel can also be provided for external instruments to pass through, the oblique included angle between the two also needs to be set within a reasonable range. If the oblique included angle is too large, it is easy to form a large bend when the external instrument is inserted into the second access channel 312 through the third access channel 341, on the one hand, hindering the operation of continuing to insert; on the other hand, it is easy to cause the structure of the external instrument to be damaged or inconvenient to operate. Further, the central axis of the third access channel 341 and the central axis of the second access channel 312 are preferably coplanar to simplify the processing and forming between the third access piece 340 and the access piece 310.

[0064] In actual application, the working channel defined by the third access channel 341, the second access channel 312 and the extension channel can be used as a channel with higher priority for fluid flow, for example, as a drainage channel.

[0065] In addition, in a further scheme, the double-channel connection assembly 3 can also include four access pieces, in addition to the first access piece 320, the second access piece 330 and the third access piece 340, the fourth access piece 350. The fourth access piece 350 is provided with a fourth access channel. The fourth access piece 350 can be specifically set and applied according to any access piece as described above. Or in an embodiment, the fourth access piece 350 can be used to connect and fix with the operation main body 1.

[0066] Specifically, for example Figure 3 As described, the fourth access piece 350 is laterally protrudingly arranged at the side wall of the access piece 310, that is, an oblique included angle is formed between the fourth access channel and the access channel. The fourth access piece 350 can be inserted and fixed with the mounting groove of the insertion main body 2. And according to actual needs, the fourth access channel can be used as a suction channel for connecting the operation main body 1 and the insertion main body 2.

[0067] It should be noted that the second access piece 330, the third access piece 340 and the fourth access piece 350 are all obliquely protrudingly arranged at the side wall of the access piece 310. In actual application, at least two of the second access piece 330, the third access piece 340 and the fourth access piece 350 can extend obliquely in the same direction. Or the oblique extension directions of the second access piece 330, the third access piece 340 and the fourth access piece 350 are not limited to be the same, forming oblique in each direction. Specifically, for example Figures 3 to 6As shown, the second access member 330 and the third access member 340 can be oppositely arranged in the same radial direction of the outlet member 310; and the fourth access member 350 is obliquely extended in another radial direction of the outlet member 310.

[0068] Based on one or more of the above embodiments, in a further aspect, the outer diameter of each access member, the inner diameter of each access channel, the length of each access member, the inner diameter of each outlet channel, and the like can be set the same. Or one of the outer diameter of each access member, the inner diameter of each access channel, the length of each access member, the inner diameter of each outlet channel, and the like can be set differently. For example, the inner diameters of the access channels of at least two access members are different, so that different access channels are formed, which can be used for different specifications of external instruments to be inserted, and / or can be used for different flow rates of fluid to flow through. And / or, the lengths of the access channels of at least two access members are different, so that at least the inlet ends of the at least two access members are staggered, which facilitates the required diagnosis and treatment operations on the at least two access members.

[0069] In addition, at least one of the access members described above is provided with a detachable connection structure 370 at a position away from the outlet member 310. When the external accessory is connected with the access member, the detachable connection structure 370 can generally be connected and matched with the detachable connection structure provided on the external accessory, so as to more quickly realize the disassembly and assembly between the external accessory and the access member. Specifically, the detachable connection structure 370 can be a threaded structure.

[0070] And / or, at least one access member is provided with a locking mechanism 360, which is used to seal and lock the inserted external instrument at the access channel. The specific aspect of the locking mechanism 360 is various, for example, it can be a wedge-shaped sealing ring, two elastic clamping members that can be close to each other and away from each other, and the like.

[0071] Specifically, please refer to Figures 4 to 6In an embodiment, the access channel of the at least one access member comprises a first channel segment 321a and a second channel segment 321b connected in sequence in the direction close to the exit member 310, the inner diameter of the first channel segment 321a is greater than the inner diameter of the second channel segment 321b, so as to form a step surface 321c at the connection of the two channel segments, the step surface 321c is located at the channel opening of the first channel segment 321a. The double-channel connection assembly 3 further comprises a locking mechanism 360, the locking mechanism 360 comprises an elastic stop ring 361, a rigid stop ring 362 and a joint member 363. The elastic stop ring 361 is arranged in the first channel segment 321a and supported at the step surface 321c; the rigid stop ring 362 is arranged in the first channel and supported at one end of the elastic stop ring 361 away from the step surface 321c; the end of the joint member 363 is provided with an annular slot 363a, so as to be separated by the annular slot 363a into an outer convex part 363b and an inner convex part 363c, when the annular slot 363a is inserted into the access member, the outer convex part 363b is sleeved on the outside of the access member, and the inner convex part 363c extends into the first channel segment 321a and is supported at one end of the rigid stop ring 362 away from the elastic stop ring 361; wherein the elastic stop ring 361, the rigid stop ring 362 and the inner convex part 363c are correspondingly provided with through holes 360a, the through holes 360a are connected with the second channel segment 321b, and the insertion depth of the annular slot 363a and the access member is adjustable, so that after an external instrument is inserted into the second channel segment 321b through the through hole 360a, the insertion depth of the annular slot 363a and the access member is driven to increase by an external force, the inner convex part 363c drives the rigid stop ring 362 to press the elastic stop ring 361, so that the elastic stop ring 361 is deformed and presses the external instrument.

[0072] Specifically, the annular groove does not pass through both ends of the joint member 363, so as to separate the joint member 363 into an inner convex part 363c located on the inner side of the annular groove, an outer convex part 363b located on the outer side of the annular groove, and a connecting part connecting the outer convex part 363b and the inner convex part 363c. Taking the first joint member 363 as an example, after the first joint member 363 forms the first access channel 321, the part located on the outer periphery of the first access channel 321 is the same as the annular insertion protrusion inserted into the annular groove. At this time, in order to achieve the purpose of adjustable insertion depth of the annular slot 363a and the access member, for example, an inner thread 363e can be formed on the inner side wall of the annular slot 363a (specifically, the side wall forming the outer convex part 363b), and an outer thread 321e can be formed on the outer wall of the insertion protrusion. The annular slot 363a and the insertion protrusion not only are inserted and matched, but also can be threadedly connected.

[0073] When the joint member 363 is rotated outwards relative to the insertion protrusion, i.e. the insertion depth of the insertion protrusion and the annular slot 363a is reduced, the outer protrusion 363b drives the inner protrusion 363c away from the rigid stop ring 362 through the connecting portion, and the rigid stop ring 362 does not or only slightly presses the elastic stop ring 361, so that the elastic stop ring 361 does not deform elastically and does not press the external instrument, ensuring that the external instrument can be smoothly inserted into the through hole 360a and finally inserted into the second channel segment 321b.

[0074] Conversely, when the joint member 363 is rotated inwards relative to the insertion protrusion, i.e. the insertion depth of the insertion protrusion and the annular slot 363a is increased, the outer protrusion 363b drives the inner protrusion 363c to approach and press against the rigid stop ring 362 through the connecting portion, and the rigid stop ring 362 presses the elastic stop ring 361, so that the elastic stop ring 361 deforms elastically and then presses the external instrument through the elastic deformation, on the one hand locking and limiting the external instrument at the current position, and on the other hand sealing the inner wall of the through hole 360a and the outer wall of the external instrument at the position, increasing the sealing performance when the external instrument is inserted into the first access channel 321.

[0075] Further, in an embodiment, one of the step surface 321c and the elastic stop ring 361 is provided with a first recess 321d, and the other is provided with a first protrusion 361a, the first recess 321d and the first protrusion 361a being in recess-protrusion connection; and / or, one of the elastic stop ring 361 and the rigid stop ring 362 is provided with a second recess 362a, and the other is provided with a second protrusion 361b, the second recess 362a and the second protrusion 361b being in recess-protrusion connection; and / or, one of the rigid stop ring 362 and the inner protrusion 363c is provided with a third recess 363d, and the other is provided with a third protrusion 362b, the third recess 363d and the third protrusion 362b being in recess-protrusion connection.

[0076] Specifically, as shown in FIG. 6, the step surface 321c is provided with the first recess 321d, and the elastic stop ring 361 is provided with the first protrusion 361a, the first recess 321d and the first protrusion 361a being in recess-protrusion connection. Figure 6As shown, the first recess 321d can be arranged at the stop surface, and the second recess 362a can be arranged at the corresponding position of the rigid stop ring 362 close to the side wall of the first channel segment 321a. At this time, the first protrusion 361a can be protruded at the end of the elastic stop ring 361 in contact with the stop surface, and the second protrusion 361b can be protruded at the end of the elastic stop ring 361 in contact with the rigid stop ring 362. Since the first recess 321d and the second recess 362a are both arranged close to the first channel segment 321a, the concave-convex connection of the first protrusion 361a and the first recess 321d and the concave-convex connection of the second protrusion 361b and the second recess 362a can limit the elastic stop ring 361 radially inwardly, so that when the elastic stop ring 361 is extruded, the parts of the elastic stop ring 361 where the first protrusion 361a and the second protrusion 361b are located are extruded and deformed, but the elastic stop ring 361 will not be separated from the stop surface and the rigid stop ring 362.

[0077] In addition, a third protrusion 362b can be protruded at the end of the rigid stop ring 362 away from the elastic stop ring 361, and a third recess 363d can be arranged corresponding to the inner protrusion 363c. At this time, the rigid stop ring 362 can also be radially limited by the inner protrusion 363c, but through the second protrusion 361b and the second recess 362a, the contact area between the rigid stop ring 362 and the elastic stop ring 361 is enlarged, so that the rigid stop ring 362 can more evenly transmit the pressure of the inner protrusion 363c it bears to the elastic stop ring 361, ensuring that the elastic stop ring 361 is deformed to extrude the external instrument, but is not easy to break.

[0078] In addition, based on any of the above embodiments, it should be noted that when the extension channel is arranged as at least two, the inner diameters of the extension channels can be arranged to be the same or at least two different according to actual needs. For example, Figure 2 As shown, the inner diameter of the first extension channel 210 can be greater than that of the second extension channel 220. The installation channel 230 is arranged by reasonably utilizing the space beside the first extension channel 210 and the second extension channel 220. At this time, when the illumination device 250 is provided with at least two, and each illumination device 250 can be arranged adjacent to each extension channel one by one. That is, at least one illumination device 250 is arranged adjacent to the first extension channel 210, so as to be able to centrally illuminate the diseased part diagnosed and treated by the external instrument passing through the first extension channel 210 or the fluid flowing through the first extension channel 210. Similarly, at least one illumination device 250 is arranged adjacent to the second extension channel 220, so as to be able to centrally illuminate the diseased part diagnosed and treated by the external instrument passing through the second extension channel 220 or the fluid flowing through the first extension channel 210. At this time, each illumination device 250 is not limited to being arranged on the opposite sides of the imaging device 240, but can be arranged on any suitable side of the imaging device 240.

[0079] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, or direct / indirect application in other related technical fields, made under the inventive concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A dual-channel connection assembly, characterized in that, include: Outgoing component, with outgoing channel; and, At least three access devices, one end of each access device is connected to the output device, and each access device is provided with an access channel; The outlet is used to be installed into the insertion body of the endoscope, and the inlet or outlet is used to be installed into the operating body of the endoscope. After connection, at least one of the inlet channels is connected to the outlet channel to allow external instruments to be inserted and / or to allow fluid flow.

2. The dual-channel connection assembly as described in claim 1, characterized in that, One of the access devices is a first access device, and the access channel of the first access device is connected to the port of the output channel and extends in the same direction as the output channel; The access channels of the remaining access devices, excluding the first access device, are connected to the side wall of the output channel and extend obliquely in each direction relative to the output channel.

3. The dual-channel connection assembly as described in claim 2, characterized in that, At least the first access component and the outlet component are integrally formed; and / or, Of the remaining access devices other than the first access device, at least two of the access devices have access channels with different tilt directions relative to the output channel.

4. The dual-channel connection assembly as described in claim 1, characterized in that, At least two of the access devices have access channels with different inner diameters; and / or, The access channels of at least two of the access devices have different lengths.

5. The dual-channel connection assembly as described in claim 1, characterized in that, At least one of the access members has a detachable connection structure at a portion away from the outlet member; and / or, At least one of the access components is provided with a locking mechanism for sealing and locking the inserted external instrument at the access channel.

6. The dual-channel connection assembly as described in claim 1, characterized in that, The access channel of at least one of the access components includes a first channel segment and a second channel segment connected sequentially in the direction close to the outlet component, wherein the inner diameter of the first channel segment is larger than the inner diameter of the second channel segment to form a stepped surface at the connection between the two. The dual-channel connection assembly further includes a locking mechanism, which comprises: An elastic retaining ring is disposed within the first channel section and supported at the stepped surface; A rigid retaining ring is disposed within the first channel and supported at the end of the elastic retaining ring opposite to the stepped surface; and, The connector has an annular groove at its end, which separates and defines an outer protrusion and an inner protrusion. When the annular groove is inserted into the access member, the outer protrusion is sleeved on the outside of the access member, and the inner protrusion extends into the first channel section and is supported on the end of the rigid retaining ring opposite to the elastic retaining ring. The elastic retaining ring, the rigid retaining ring, and the inner protrusion are respectively provided with through holes, which are connected to the second channel segment. The insertion depth of the annular slot and the access member is adjustable so that after the external instrument is inserted into the second channel segment through the through hole, the insertion depth of the annular slot and the access member is increased by external force. The inner protrusion drives the rigid retaining ring to squeeze the elastic retaining ring, causing the elastic retaining ring to deform and squeeze the external instrument.

7. The dual-channel connection assembly as described in claim 6, characterized in that, One of the stepped surface and the elastic retaining ring has a first recess, and the other has a first convex portion, wherein the first recess and the first convex portion are connected in a recessed-convex manner; and / or, One of the elastic retaining ring and the rigid retaining ring has a second recess, and the other has a second convex portion, wherein the second recess and the second convex portion are connected in a recessed-convex manner; and / or, One of the rigid retaining ring and the inner convex part is provided with a third concave part, and the other is provided with a third convex part. The third concave part and the third convex part are connected in a concave-convex manner.

8. An endoscope, characterized in that, include Operating entity; Insert the main body; as well as, The dual-channel connection assembly as described in any one of claims 1 to 7, wherein the dual-channel connection assembly connects the operating body and the insertion body respectively.

9. The endoscope as described in claim 8, characterized in that, The insertion body is provided with at least two extension channels along its axial direction, and the extension channels are arranged at radial intervals along the insertion body. Each of the extended channels is connected to the output channel and is configured to correspond one-to-one with at least two of the access channels.

10. The endoscope as described in claim 9, characterized in that, The insertion body is also provided with an installation channel along its axial direction, and the installation channel is located on the radial side of each of the extension channels; The endoscope also includes an imaging device and at least two illumination devices, both of which are installed at the installation channel, and each illumination device is arranged in a corresponding manner to each of the adjacent extension channels.

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