Multi-channel connectors, operating handles and channel assemblies for endoscopes

Abstract

The present application belongs to the field of medical device technology, and specifically relates to a multi-way connector, an operating handle and a channel assembly for an endoscope. The multi-way connector includes a base and a constraint structure, a docking joint is provided at the distal end of the base, the constraint structure is connected to the base, a curved constraint channel is formed on the constraint structure, the docking joint is located on the extension path of the constraint channel, the docking joint is used to dock the proximal end of the instrument tube of the endoscope, and the constraint channel is used to install and prefabricate the part of the instrument tube of the curved endoscope close to its own proximal end. The multi-way connector using the present application will be bent by the constraint channel when the instrument tube is installed, and the inner wall of the constraint channel can constrain and limit the instrument tube, thereby resisting the internal stress generated when the instrument tube is bent, and limiting the instrument tube from recovering from a bent state to a straight state, thereby preventing the internal stress from pulling the colloid between the instrument tube and the multi-way connector, so as to prevent the colloid between the instrument tube and the multi-way connector from failing and causing both to fall off.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to a multi-channel connector, an operating handle and a channel assembly of an endoscope. Background Art

[0002] When diagnosing and treating lesions in the patient's body, an endoscope is usually required. The endoscope includes an operating handle and an insertion part. During specific operation, by controlling the operating handle, the active bending section at the distal end of the insertion part can be pulled by a traction rope to achieve bending action, thereby changing the direction of the distal end of the insertion part.

[0003] An instrument tube is arranged in the insertion part, and an instrument channel is formed in the instrument tube for passing the treatment instrument, and the proximal end of the instrument tube is bonded to the multi-way connector on the operating handle. However, in practice, the instrument tube and the operating handle are often disconnected. Summary of the invention

[0004] The purpose of the present application is to provide a multi-channel connector, an operating handle and a channel assembly of an endoscope, which can help solve the problem that the instrument tube and the operating handle are easily disconnected.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, the present application provides a multi-channel connector for an endoscope, including a base and a constraint structure, a docking joint is provided at the distal end of the base, the constraint structure is connected to the base, a curved constraint channel is formed on the constraint structure, the docking joint is located on the extension path of the constraint channel, the docking joint is used to dock with the proximal end of the instrument tube of the endoscope, and the constraint channel is used to install and prefabricate the portion of the instrument tube of the curved endoscope close to its own proximal end.

[0007] In a second aspect, the present application provides an operating handle of an endoscope, comprising the above-mentioned multi-channel connector.

[0008] In a third aspect, the present application provides a channel assembly of an endoscope, including an instrument tube and the above-mentioned multi-way connector, the proximal end of the instrument tube is docked with the docking head, and the part of the instrument tube close to its own proximal end is installed in the restraining channel.

[0009] The beneficial technical effects of this application are as follows:

[0010] In the present application, a constraint structure is connected to the base, and a curved constraint channel is formed on the constraint structure. Therefore, when the multi-way connector of the present application is used to dock with the instrument tube, the instrument tube can be installed in the constraint channel and the proximal end of the instrument tube can be docked with the docking head. During this process, the instrument tube will adapt to the shape of the constraint channel and be bent by the constraint channel, and the inner wall of the constraint channel can constrain and limit the instrument tube, thereby resisting the internal stress generated when the instrument tube is bent, and limiting the instrument tube from recovering from a bent state to a straight state, thereby preventing the internal stress from pulling the colloid between the instrument tube and the multi-way connector, so as to prevent the colloid between the instrument tube and the multi-way connector from failing and causing the two to fall off.

[0011] In addition, the inner wall of the curved restraining channel has a portion that intersects with the axial direction of the multi-way connector. Therefore, after the instrument tube is assembled to the curved restraining channel, the portion of the inner wall of the restraining channel that intersects with the axial direction of the multi-way connector can limit the instrument tube in the axial direction, thereby preventing the instrument tube from falling off the multi-way connector when subjected to axial force. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a multi-channel connector disclosed in an embodiment of the present application;

[0013] Figure 2 For this application Figure 1 The enlarged schematic diagram of point A in the middle;

[0014] Figure 3 A cross-sectional view of a portion of the structure of a multi-channel connector disclosed in an embodiment of the present application;

[0015] Figure 4 This is a schematic diagram of the assembly between the multi-way connector and the instrument tube disclosed in the embodiment of the present application.

[0016] Description of reference numerals:

[0017] 100, base; 110, docking joint; 111, docking hole; 112, glue injection hole; 120, suction port; 130, instrument port; 140, liquid injection port; 200, constraint structure; 201, restraint channel; 210, first plate body; 211, first avoidance port; 212, second avoidance port; 220, second plate body; 221, support part; 230, third plate body; 240, demoulding hole; 300, instrument tube. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0020] In the following, in combination with the accompanying drawings, the multi-channel connector, operating handle and channel assembly of the endoscope provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0021] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0022] The inventors have discovered that the current multi-way connector is provided with a docking joint, and the proximal end of the instrument tube is sleeved and bonded to the docking joint. Since the multi-way connector is arranged on the left or right side of the operating handle, and the instrument tube passes through the proximal end of the insertion portion and enters the middle part of the operating handle, there is a lateral distance between the instrument tube and the multi-way connector at this time. Therefore, when the instrument tube is docked with the multi-way connector, the instrument tube will bend, and the instrument tube will generate internal stress when bending. This internal stress will make the instrument tube have a tendency to move from a bent state to a straight state. Obviously, this internal stress will pull the colloid between the instrument tube and the multi-way connector, thereby causing the colloid to fail, causing the instrument tube to fall off the multi-way connector.

[0023] like Figures 1 to 4As shown, the embodiment of the present application discloses a multi-way connector for an endoscope, including a base 100 and a constraint structure 200, wherein a docking head 110 is provided at the distal end of the base 100, and the constraint structure 200 is connected to the base 100. Optionally, the constraint structure 200 may be directly provided on the end face of the docking head 110, in which case the constraint structure 200 is directly connected to the docking head 110; or the constraint structure 200 may be indirectly connected to the base 100 through a connecting member, in which case the end of the connecting member facing away from the base 100 may be connected to the distal end, middle part or proximal end of the base 100, and the present application does not limit the connection mode and connection position between the constraint structure 200 and the base 100. The constraint structure 200 may be located at the distal side of the base 100.

[0024] Optionally, the base 100 is provided with an instrument port 130 and a suction port 120, both of which are connected to the restraint channel 201 through the channel in the base 100. The surgical instrument can be inserted into the multi-way connector through the instrument port 130, so that the surgical instrument can be extended to the lesion site in the patient's body to perform sampling or surgical operations on the lesion site. The suction port 120 here can be connected to a negative pressure source. Under the action of the negative pressure source, blood clots, small stones, purulent floccules, etc. in the human body can be sucked out from the lesion site of the patient. For example, the suction port 120 here can be connected to the suction valve on the endoscope operating handle. Furthermore, the base 100 is also provided with an injection port 140, and a syringe can be used to inject physiological saline or liquid medicine into the human body through the injection port 140 to achieve the purpose of cleaning or treatment.

[0025] A curved restraining channel 201 is formed on the restraining structure 200, and the docking joint 110 is located on the extension path of the restraining channel 201. The docking joint 110 is used to dock the proximal end of the instrument tube 300 of the endoscope, and the restraining channel 201 is used to install and prefabricate the portion of the instrument tube 300 of the curved endoscope close to its own proximal end. Specifically, the instrument tube 300 here can be sleeved on the outside or inside of the docking joint 110 to complete the docking between the instrument tube 300 and the docking joint 110; or the end face of the instrument tube 300 can also be fitted and connected with the end face of the docking joint 110 to complete the docking between the instrument tube 300 and the docking joint 110. This application does not limit the docking method between the instrument tube 300 and the docking joint 110.

[0026] Optionally, the confinement channel 201 here is curved, and the curvature of the curve where the confinement channel 201 extends in the direction of extension gradually changes in the direction of extension of the confinement channel 201, that is, the curve where the confinement channel 201 extends in the direction of extension has the same positive and negative sign, and the bending direction of each point on the curve is consistent, either convex or concave. In this case, the confinement channel 201 may extend in the arc direction, and of course, the confinement channel 201 may not extend in the arc direction. Alternatively, the curvature of the curve where the confinement channel 201 extends in the direction of extension may also change suddenly in the direction of extension of the confinement channel 201, that is, the curve where the confinement channel 201 extends in the direction of extension has different positive and negative signs, and there are at least two points on the curve with inconsistent bending directions, some points on the curve are convex and other points are concave. In this case, the curve where the confinement channel 201 extends in the direction of extension may be wavy, and of course, the confinement channel 201 may not be wavy. This application does not limit the curved shape of the confinement channel 201.

[0027] In the present application, a constraint structure 200 is connected to the base 100, and a curved constraint channel 201 is formed on the constraint structure 200. Therefore, when the multi-way connector of the present application is used to dock with the instrument tube 300, the instrument tube 300 can be installed in the constraint channel 201 and the proximal end of the instrument tube 300 can be docked with the docking head 110. During this process, the instrument tube 300 will adapt to the shape of the constraint channel 201, thereby being bent by the constraint channel 201, and the inner wall of the constraint channel 201 can constrain and limit the instrument tube 300, thereby resisting the internal stress generated when the instrument tube 300 is bent, and limiting the instrument tube 300 from recovering from a bent state to a straight state, thereby preventing the internal stress from pulling the colloid between the instrument tube 300 and the multi-way connector, so as to prevent the colloid between the instrument tube 300 and the multi-way connector from failing and causing the two to fall off.

[0028] In addition, the inner wall of the curved restraining channel 201 has a portion that intersects with the axial direction of the multi-way connector. Therefore, after the instrument tube 300 is assembled to the curved restraining channel 201, the portion of the inner wall of the restraining channel 201 that intersects with the axial direction of the multi-way connector can limit the instrument tube 300 in the axial direction, thereby preventing the instrument tube 300 from falling off the multi-way connector when subjected to axial force.

[0029] It should be noted that when the instrument tube 300 is sleeved on the outside or inside of the docking head 110, the colloid between the instrument tube 300 and the docking head 110 is connected between the peripheral walls of the two; when the end face of the instrument tube 300 and the end face of the docking head 110 are fitted and connected, the colloid between the instrument tube 300 and the docking head 110 is connected between the end faces of the two.

[0030] In some embodiments, the restraint channel 201 may be a restraint hole, which is arranged in the restraint structure 200. In this case, the inner wall of the restraint channel 201 is a closed structure in its own circumferential direction, that is, the restraint structure 200 can completely wrap the instrument tube 300 in the circumferential direction of the instrument tube 300. In this way, the inner wall of the restraint channel 201 can limit the instrument tube 300 in all directions to further prevent the failure of the colloid between the instrument tube 300 and the multi-way connector.

[0031] In an optional embodiment, the restraint channel 201 is a restraint groove, which extends to the surface of the restraint structure 200 to form a notch, and the two opposite inner side walls of the restraint groove can prefabricate the bent instrument tube 300, that is, the two opposite inner side walls of the restraint groove are curved, and a curved restraint groove is defined between the two opposite inner side walls.

[0032] In this embodiment, the restraint channel 201 is a restraint groove, and the restraint groove forms a notch on the surface of the restraint structure 200. That is to say, the restraint channel 201 is an open structure in its own circumferential direction, so that the part of the instrument tube 300 close to its own proximal end can be installed in the restraint channel 201 through the notch. The size of the notch is relatively large, so it is easier to install the instrument tube 300 into the restraint channel 201.

[0033] In addition, the binding groove can expose all parts in its extension direction through the notch. After the instrument tube 300 is installed in the binding groove, all parts of the instrument tube 300 along its extension direction will also be exposed. In this way, glue can be injected into the instrument tube 300 and each part of the binding groove through the notch, which can not only increase the amount of glue injected into the binding channel 201, but also make the glue between the instrument tube 300 and the inner wall of the binding groove more evenly distributed, thereby improving the adhesive stability between the instrument tube 300 and the binding groove, and then improving the connection strength between the instrument tube 300 and the three-way connector to prevent the two from detaching. Furthermore, after the glue is injected into the binding groove, the glue will be exposed through the notch. Therefore, when the glue is a photosensitive glue, the notch can increase the irradiation area of ​​the photosensitive glue, thereby shortening the curing time of the photosensitive glue and strengthening the curing effect of the photosensitive glue, thereby improving the connection strength between the instrument tube 300 and the three-way connector.

[0034] In an optional embodiment, the width of the binding groove gradually decreases along the direction extending from the notch of the binding groove to the bottom wall of the groove. In this embodiment, the width of the binding groove near the notch is larger, and the width of the part away from the notch is smaller, so that it is easier to install the instrument tube 300 into the binding groove, reducing the difficulty of installing the instrument tube 300, and the larger notch can further increase the exposure area of ​​the photosensitive adhesive; furthermore, the width of the binding groove gradually decreases in the direction extending from the notch to the bottom wall of the groove, so that the binding groove can adapt to instrument tubes 300 of different diameters, that is, the part of the binding groove near its own notch can accommodate instrument tubes 300 with larger diameters, and the part of the binding groove away from its own notch can accommodate instrument tubes 300 with relatively smaller diameters, thereby improving the installation flexibility of the instrument tube 300.

[0035] In addition, the design of gradually decreasing width in this embodiment also helps to reduce the generation of bubbles in the photosensitive adhesive. In the narrower groove bottom part, the glue flows relatively slowly, which helps the bubbles rise and escape from the surface of the glue. Of course, the restraining groove can also be a groove of equal width. In this case, the groove width of the restraining groove remains unchanged along the direction extending from the groove opening of the restraining groove to the groove bottom wall.

[0036] It should be noted that, in order to make the multi-way connector adapt to instrument tubes 300 of different diameters, at least two different docking parts can be provided on the docking head 110, and the two docking parts are respectively used to dock two instrument tubes 300 of different diameters. For example, when a docking hole 111 is provided on the end face of the docking head 110, and the instrument tube 300 can be inserted into the docking hole 111, the docking hole 111 can be a stepped hole, and different hole sections of the stepped hole are all docking parts. In this case, different hole sections of the stepped hole are respectively used to insert instrument tubes 300 of different diameters; or, when the instrument tube 300 can be sleeved on the outer circumferential surface of the docking head 110, the outer circumferential surface of the docking head 110 can be provided with two docking parts of different diameters, so as to adapt to instrument tubes 300 of different diameters.

[0037] And / or, in an optional embodiment, the space within the restraint groove includes a mounting position for mounting the instrument tube 300, the mounting position is located at the bottom of the restraint groove, the length of the mounting position along the direction extending from the groove mouth of the restraint groove to the bottom wall of the groove is a first length, and the depth of the restraint groove is 1.5 times to 2.5 times the first length.

[0038] The instrument tube 300 can be installed in the installation position, so the first length of the installation position is the diameter of the instrument tube 300. If the diameter of the instrument tube 300 is less than 1.5 times the depth of the restraining groove, after the glue is injected into the restraining groove, the glue is easy to form a thin layer on the surface of the pipe, which may cause the retention of bubbles; if the diameter of the instrument tube 300 is greater than 2.5 times the depth of the restraining groove, the depth of the restraining groove is too deep, and the curing of the photosensitive glue at the bottom of the restraining groove may cause incomplete curing or inconsistent quality due to uneven light, thereby reducing the connection strength between the instrument tube 300 and the multi-way connector.

[0039] Therefore, in this embodiment, the depth of the restraining groove is set to be 1.5 times to 2.5 times the first length, so that the depth of the restraining groove can be within an appropriate range. At this time, the restraining groove can not only accommodate more glue, so that bubbles have more opportunities to escape, but also compensate for the volume shrinkage of the photosensitive adhesive during the curing process, ensuring that the cured colloid can still evenly cover the instrument tube 300, and can also ensure the uniformity and completeness of the curing of the photosensitive adhesive at the bottom of the restraining groove, so as to ensure the connection strength between the instrument tube 300 and the multi-way connector.

[0040] Of course, the depth of the restraining groove may be less than 1.5 times the first length, or even less than the first length; or, the depth of the restraining groove may be greater than 2.5 times the first length. This application does not limit the relationship between the depth of the restraining groove and the first length.

[0041] In an optional embodiment, the space within the restraining groove includes a glue storage space and an installation position for installing the instrument tube 300, and the installation position and the glue storage space are distributed sequentially in the direction extending from the slot mouth of the restraining groove to the bottom wall of the groove, that is, the installation position can be separated from the bottom wall of the restraining groove by the glue storage space. In this embodiment, the mounting position can be separated from the bottom wall of the restraining groove by a glue storage space, that is, after the instrument tube 300 is installed in the mounting position, the instrument tube 300 is separated from the bottom wall of the restraining groove, and a glue storage space is defined between the instrument tube 300 and the bottom wall of the restraining groove. In this way, after the instrument tube 300 is installed in the mounting position, glue is injected into the restraining groove, and the glue will flow into the glue storage space, thereby bonding the instrument tube 300 to the bottom wall of the restraining groove. Compared with the embodiment of "after the instrument tube 300 is installed in the restraining groove, the instrument tube 300 can also contact the bottom wall of the restraining groove", this embodiment can increase the area of ​​the instrument tube 300 connected to the restraining groove by the glue, thereby increasing the connection strength between the instrument tube 300 and the restraining groove.

[0042] The process of docking the docking joint 110 on the base 100 and the instrument tube 300 in the above embodiment is as follows: the instrument tube 300 is installed in the restraint groove; and the proximal end of the instrument tube 300 is docked with the docking joint 110. Since the instrument tube 300 occupies more space in the restraint groove after being installed in the restraint groove, the operating space for docking the instrument tube 300 with the docking joint 110 in the restraint structure 200 is relatively narrow, and it is not convenient to dock the proximal end of the instrument tube 300 with the docking joint 110.

[0043] In an alternative embodiment, see Figure 2 The constraint structure 200 includes a first plate body 210, a second plate body 220 and a third plate body 230. The second plate body 220 is arranged between the first plate body 210 and the third plate body 230, and the first plate body 210, the second plate body 220 and the third plate body 230 are enclosed to form a restraining groove. A first avoidance opening 211 is provided at the proximal end of the first plate body 210, and the first avoidance opening 211 penetrates the first plate body 210 along the width direction of the restraining groove.

[0044] In this embodiment, the first plate body 210, the second plate body 220 and the third plate body 230 are enclosed to form a binding groove, and the proximal end of the first plate body 210 is provided with a first avoidance opening 211 that penetrates through the binding groove. The first avoidance opening 211 is connected to the binding groove. At this time, the space formed in the first avoidance opening 211 can also be used to operate the instrument tube 300, which can increase the operating space for operating the instrument tube 300 and facilitate the docking of the proximal end of the instrument tube 300 with the docking head 110. Furthermore, glue can be dispensed into the binding groove through the first avoidance opening 211, thereby expanding the glue dispensing area to improve the uniformity of the glue distribution in the binding groove and improve the connection strength between the instrument tube 300 and the multi-way connector. In addition, the first avoidance opening 211 can also increase the irradiation area of ​​the photosensitive glue in the binding groove, thereby shortening the curing time of the photosensitive glue and strengthening the curing effect of the photosensitive glue, thereby improving the connection strength between the instrument tube 300 and the three-way connector. Of course, the first avoidance opening 211 may not be provided at the proximal end of the first plate body 210 , and this application does not limit this.

[0045] In an optional embodiment, a second escape opening 212 is provided at the proximal end of the second plate body 220 , the second escape opening 212 penetrates the second plate body 220 along the depth direction of the restraining groove, and the first escape opening 211 is communicated with the second escape opening 212 .

[0046] In this embodiment, the first plate body 210, the second plate body 220 and the third plate body 230 are enclosed to form a binding groove, and the proximal end of the second plate body 220 is provided with a second avoidance opening 212 that penetrates through the binding groove. The second avoidance opening 212 is connected to the binding groove. At this time, the space formed in the first avoidance opening 211 and the second avoidance opening 212 is used to operate the instrument tube 300, which can further increase the operating space for operating the instrument tube 300, and facilitate the docking of the proximal end of the instrument tube 300 with the docking head 110. Furthermore, glue can be dispensed into the binding groove through the first avoidance opening 211 and the second avoidance opening 212, thereby further expanding the glue dispensing area, so as to further improve the uniformity of the glue distribution in the binding groove and improve the connection strength between the instrument tube 300 and the multi-way connector. In addition, the second avoidance opening 212 can also increase the irradiation area of ​​the photosensitive glue in the binding groove, thereby shortening the curing time of the photosensitive glue and strengthening the curing effect of the photosensitive glue, thereby improving the connection strength between the instrument tube 300 and the three-way connector. Of course, the second avoidance opening 212 may not be provided at the proximal end of the second plate body 220 , and this application does not limit this.

[0047] In an optional embodiment, there is a distance between the second avoidance opening 212 and the third plate body 230 , and the second plate body 220 includes a support portion 221 located between the second avoidance opening 212 and the third plate body 230 , and the support portion 221 can support the instrument tube 300 .

[0048] In this embodiment, there is a gap between the second avoidance opening 212 and the third plate body 230, so that a support portion 221 is formed between the second avoidance opening 212 and the third plate body 230, and the support portion 221 can support the instrument tube 300 to prevent the instrument tube 300 from collapsing at the second avoidance opening 212; and the support portion 221 can guide the instrument tube 300, so as to guide the instrument tube 300 to the docking head 110 and dock with the docking head 110, so as to reduce the difficulty of assembly. Of course, there may be no gap between the second avoidance opening 212 and the third plate body 230, in which case the second plate body 220 does not include the above-mentioned support portion 221.

[0049] And / or, in an optional embodiment, the end face of the docking joint 110 is provided with a docking hole 111 for inserting the instrument tube 300, the constraint structure 200 is provided on the end face of the docking joint 110, the proximal notch of the restraint groove is provided corresponding to the docking hole 111, the first avoidance opening 211 extends to the proximal face of the first plate body 210, and the second avoidance opening 212 extends to the proximal face of the second plate body 220.

[0050] In this embodiment, the first avoidance opening 211 and the second avoidance opening 212 both extend to the end face of the docking joint 110, so that different parts of the docking hole 111 can be exposed by using the first avoidance opening 211 and the second avoidance opening 212, so that glue can be dispensed to the part of the docking hole 111 exposed by the first avoidance opening 211 and the part of the docking hole 111 exposed by the second avoidance opening 212, which can not only improve the uniformity of glue injection into the docking hole 111, but also increase the connection area between the docking hole 111 and the instrument tube 300 through the colloid connection, thereby improving the connection strength between the instrument tube 300 and the three-way connector. Of course, the first avoidance opening 211 and the second avoidance opening 212 can also be set apart from the end face of the docking joint 110, and this application is not limited to this.

[0051] In an optional embodiment, a docking hole 111 is provided on the end face of the docking joint 110 , and the docking hole 111 can be inserted into the instrument tube 300 . A glue injection hole 112 is provided on the outer peripheral surface of the docking joint 110 , and the glue injection hole 112 is communicated with the docking hole 111 .

[0052] In this embodiment, the outer peripheral surface of the docking joint 110 is provided with a glue injection hole 112, so that not only can glue be injected into the docking hole 111 through the gap between the hole mouth of the docking hole 111 and the instrument tube 300, but glue can also be injected into the docking hole 111 through the glue injection hole 112, so that the instrument tube 300 and the docking joint 110 are bonded, which can not only improve the glue injection efficiency, but also improve the uniformity of the glue injection.

[0053] In some embodiments, the constraint structure 200 is further provided with a draft hole 240 that passes through the constraint structure 200. The draft hole 240 is coaxial with the docking hole 111. The core rod used to form the docking hole 111 passes through the draft hole 240 and can exit the docking hole 111 through the draft hole 240. When the draft hole 240 is provided, the draft hole 240 can be blocked before injecting glue into the restraining groove to prevent leakage.

[0054] The embodiment of the present application also discloses an operating handle of an endoscope, including the multi-way connector described in any of the above embodiments, so that the operating handle has the beneficial effects of the above multi-way connector, which will not be repeated here.

[0055] The embodiment of the present application also discloses a channel assembly of an endoscope, including an instrument tube 300 and the multi-way connector described in any of the above embodiments, the proximal end of the instrument tube 300 is docked with the docking head 110, and the portion of the instrument tube 300 close to its own proximal end is installed in the restraining channel 201. Since the channel assembly includes the multi-way connector described in any of the above embodiments, the channel assembly has the beneficial effects of the multi-way connector, which will not be described in detail here.

[0056] The endoscope referred to in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0057] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A multi-way connector for an endoscope, characterized in that: The invention comprises a base (100) and a restraining structure (200), wherein a butt joint (110) is provided at the distal end of the base (100), the restraining structure (200) is connected to the base (100), a curved restraining channel (201) is formed on the restraining structure (200), the butt joint (110) is located on the extension path of the restraining channel (201), the butt joint (110) is used to butt with the proximal end of an instrument tube (300) of an endoscope, the restraining channel (201) is used to install and prefabricate the portion of the instrument tube (300) of the curved endoscope close to its own proximal end, and the inner wall of the restraining channel (201) can restrain and limit the instrument tube (300) to resist the internal stress generated when the instrument tube (300) is bent, and to limit the instrument tube (300) from recovering from a bent state to a straight state.

2. The multi-way connector according to claim 1, characterized in that: The restraining channel (201) is a restraining groove, which extends to the surface of the restraining structure (200) to form a notch, and the two opposite inner side walls of the restraining groove can prefabricate and bend the instrument tube (300).

3. The multi-way connector according to claim 2, characterized in that: The width of the restraining groove gradually decreases along the direction extending from the groove opening of the restraining groove to the groove bottom wall; and / or, The space in the restraining groove includes an installation position for installing the instrument tube (300), the installation position is located at the bottom of the restraining groove, the length of the installation position along the direction extending from the groove opening of the restraining groove to the groove bottom wall is a first length, and the depth of the restraining groove is 1.5 times to 2.5 times the first length.

4. The multi-way connector according to claim 2, characterized in that: The space in the restraining groove comprises a glue storage space and a mounting position for mounting the instrument tube (300), and the mounting position and the glue storage space are sequentially distributed in a direction extending from the notch of the restraining groove to the groove bottom wall.

5. The multi-way connector according to claim 2, characterized in that: The constraint structure (200) comprises a first plate body (210), a second plate body (220) and a third plate body (230), wherein the second plate body (220) is arranged between the first plate body (210) and the third plate body (230), and the first plate body (210), the second plate body (220) and the third plate body (230) enclose the constraint groove, and a first avoidance opening (211) is provided at the proximal end of the first plate body (210), and the first avoidance opening (211) penetrates the first plate body (210) along the width direction of the constraint groove.

6. The multi-way connector according to claim 5, characterized in that: A second avoidance opening (212) is provided at the proximal end of the second plate body (220), the second avoidance opening (212) penetrates the second plate body (220) along the depth direction of the restraining groove, and the first avoidance opening (211) is in communication with the second avoidance opening (212).

7. The multi-way connector according to claim 6, characterized in that: There is a distance between the second avoidance opening (212) and the third plate body (230), the second plate body (220) comprises a support portion (221) located between the second avoidance opening (212) and the third plate body (230), and the support portion (221) is capable of supporting the instrument tube (300); and / or, The end surface of the docking joint (110) is provided with a docking hole (111) for inserting the instrument tube (300), the constraint structure (200) is provided on the end surface of the docking joint (110), the proximal notch of the restraining groove is provided corresponding to the docking hole (111), the first avoidance opening (211) extends to the proximal surface of the first plate body (210), and the second avoidance opening (212) extends to the proximal surface of the second plate body (220).

8. The multi-way connector according to claim 1, characterized in that: The end surface of the docking joint (110) is provided with a docking hole (111), the docking hole (111) can allow the instrument tube (300) to be inserted, and the outer peripheral surface of the docking joint (110) is provided with a glue injection hole (112), the glue injection hole (112) is connected to the docking hole (111).

9. An operating handle of an endoscope, characterized in that: Comprising the multi-way connector as claimed in any one of claims 1 to 8.

10. A channel assembly of an endoscope, characterized in that: It comprises an instrument tube (300) and a multi-channel connector as claimed in any one of claims 1 to 8, wherein the proximal end of the instrument tube (300) is docked with the docking head (110), and the portion of the instrument tube (300) close to its own proximal end is installed in the restraining channel (201).

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