Instrument channel assembly, tee assembly, endoscope, and instrument tube assembly method

Abstract

The application provides an instrument channel assembly, a tee assembly, a endoscope and an instrument tube assembly method, and relates to the technical field of endoscopes, and solves the problem of unsmooth insertion of an instrument through the docking position of an instrument tube. The instrument channel assembly on which the endoscope or the tee assembly is based comprises a tube joint, a cover plate and an instrument tube, the cover plate covers the tube joint to form an installation hole of a distal port of an introduction channel of the tube joint; the proximal end of the instrument tube is arranged in the first installation hole in a covering manner with the tube joint through the cover plate and is provided with a tapered tube section, the tapered tube section is located in a tapered hole at the proximal end of the installation hole and is adapted to the tapered hole, and the proximal port of the tapered tube section is docked with the distal port of the introduction channel. The tapered tube section at the proximal end of the instrument tube can reduce the influence of the machining quality and the matching relationship of the instrument tube and the tube joint on the matching quality of the docking position, prevent the generation of a matching step or a protrusion on the proximal end face of the instrument tube at the docking position of the instrument tube and the tube joint, and better ensure the smoothness of the instrument.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of endoscopes, in particular to an instrument channel assembly, a tee assembly, an endoscope and an instrument tube assembly method. BACKGROUND

[0002] Endoscopes are configured with different functional channels according to different use purposes to achieve corresponding use purposes. For example, some bronchoscopes and some nephroscopes are configured with instrument channels to send instruments into the body to complete in-vivo lithotripsy, stone capture, biopsy and other operations.

[0003] An instrument channel is usually composed of a docking instrument tube and an internal channel of a tube joint. The instrument tube provides an equal-diameter internal channel and bears the function of guiding smooth movement of the instrument. The instrument tube is relatively soft and has low friction characteristics. The proximal end of the instrument tube is inserted into the distal end socket of the tube joint, and the proximal end of the distal end socket is axially abutted and limited by the stepped surface to complete docking. Due to the machining quality of the instrument tube and the socket, the different shaft cooperation of the instrument tube and the socket, or the insertion of the instrument tube being too forceful, the proximal end of the instrument tube is deformed by extrusion, etc., the instrument tube and the tube joint have low assembly quality at the docking position, and the instrument is not smoothly inserted when passing through the docking position of the instrument tube and the tube joint. SUMMARY

[0004] The purpose of the present application is to design an instrument channel assembly, a tee assembly, an endoscope and an instrument tube assembly method to solve the problem of the instrument not being smoothly inserted when passing through the docking position of the instrument tube and the tube joint.

[0005] The present application is achieved by the following technical solutions:

[0006] An instrument channel assembly includes a tube joint, a cover plate and an instrument tube. The tube joint is provided with a circumferentially closed introduction channel and a top side open first groove capable of placing the proximal end of the instrument tube. The cover plate covers the tube joint, and the cover plate is provided with a bottom side open third groove. The third groove and the first groove are matched to form a first mounting hole with a proximal end port connected to the distal end port of the introduction channel. The proximal end of the first mounting hole forms a tapered hole gradually tapering from the proximal end port to the distal end aperture. The proximal end of the instrument tube is located in the first mounting hole. The proximal end of the instrument tube is provided with a tapered tube segment gradually tapering from the proximal end port to the distal end aperture along the axis. The tapered tube segment is located in the tapered hole and is adapted thereto. The proximal end port of the tapered tube segment is docked with the distal end port of the introduction channel.

[0007] The application further discloses a tee assembly, which comprises the suction tube and the instrument channel assembly.

[0008] The application further discloses an endoscope, which comprises the tee assembly.

[0009] The application further discloses an instrument tube assembling method, which is used for assembling the instrument tube in the instrument channel assembly, the tee assembly or the endoscope.

[0010] The application has the following advantages and beneficial effects:

[0011] (1) The proximal end of the instrument tube is provided with the tapered tube segment, which forms the flared structure at the proximal end, and the flared structure can be used to more easily receive the instrument passing through the flared structure and provide the central guiding for the instrument; after the instrument tube is butted against the distal end port of the introduction channel of the tube joint through the tapered tube segment, a tapered space with gradually reduced inner diameter is formed in the channel region between the distal end port of the introduction channel and the distal end port of the tapered tube segment, which can reduce the influence of the machining quality and the matching relationship of the instrument tube and the tube joint on the matching quality at the butt joint position to some extent, can effectively prevent the matching step or the protrusion on the proximal end side of the instrument tube from invading into the channel of the instrument tube at the butt joint position of the instrument tube and the tube joint, and can better ensure that the instrument does not collide with the proximal end face of the instrument tube, thereby ensuring the smoothness of the instrument.

[0012] (2) In addition to providing an introduction channel for docking with the proximal end of the instrument tube on the pipe joint, a first groove is also provided, which extends from the distal end of the introduction channel to the distal end of the instrument channel assembly, so that the proximal end of the instrument tube can be placed in the first groove for pre-positioning before the cover plate is closed, and the instrument tube is restricted in the first mounting hole by the closing method to complete the docking with the pipe joint, which not only allows the instrument tube with a tapered tube segment at the proximal end to be conveniently and quickly installed on the pipe joint, but also avoids the situation that the proximal end of the instrument tube is squeezed and deformed by the insertion method, which can better ensure the docking quality of the proximal end of the instrument tube with the pipe joint at the distal end of the introduction channel, thereby ensuring the smoothness of the instrument.

[0013] (3) The instrument tube and the suction tube can both be docked and installed in one step by closing the cover plate on the pipe joint to form a tee assembly, which simplifies the installation steps. The distal end of the suction tube and the proximal end of the instrument tube can be placed in the second groove and the first groove for pre-positioning before the cover plate is closed, and the suction tube and the instrument tube are restricted in the second mounting hole and the first mounting hole by the closing method to complete the docking with the pipe joint, which can avoid the insertion deformation at the proximal end of the instrument tube and the distal end of the suction tube, thereby affecting the smoothness of the suction. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 The appearance structure schematic diagram of the endoscope of the present application is shown;

[0016] Figure 2 The internal structure schematic diagram of the endoscope of the present application is shown;

[0017] Figure 3 is Figure 2 The enlarged schematic diagram of the local part A in the middle is shown;

[0018] Figure 4 The structure schematic diagram of the structure shown in the present application is further shown; Figure 3

[0019] Figure 5 The structure shown in the present application is further shown; Figure 4

[0020] Figure 6 The partial exploded schematic diagram of the tee assembly is shown; ​​

[0021] Figure 7 A structural schematic diagram of a pipe joint in some embodiments is shown.

[0022] Figure 8 A semi-sectional schematic diagram of a tee assembly employing Figure 7 a pipe joint in some embodiments is shown.

[0023] The reference signs in the drawings are:

[0024] 10, instrument channel assembly;

[0025] 11, pipe joint; 11a, pipe body; 11b, platform;

[0026] 111, introduction channel; 112, first groove; 113, first step surface; 114, first brim; 115, side branch channel; 116, second groove; 117, second step surface; 118, second brim;

[0027] 12, cover plate; 121, third groove; 122, fourth groove; 123, glue injection hole;

[0028] 13, first mounting hole;

[0029] 14, instrument tube; 141, tapered tube section;

[0030] 15, second mounting hole;

[0031] 16, tapered hole groove;

[0032] 20, suction tube;

[0033] 100, tee assembly;

[0034] 200, endoscope; 210, shell; 220, support frame; 230, cord groove. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0036] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "tip," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0038] In the description of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0040] This invention discloses an instrument channel assembly, a three-way assembly based on the instrument channel assembly, an endoscope using the instrument channel assembly or the three-way assembly, and an assembly method for the instrument tube in the instrument channel assembly, the three-way assembly, or the endoscope. In this invention, the instrument tube is installed using a capping method and complemented by a flared structure at the proximal end of the instrument tube, which can, to a certain extent, ensure the installation quality of the instrument tube and the connector, and reduce or avoid structures that obstruct the passage of instruments.

[0041] The following is in conjunction with the appendix Figures 1 to 8 The instrument channel assembly, three-way assembly, endoscope, and instrument tube assembly method provided in this application are described in detail through specific embodiments and application scenarios.

[0042] On one hand, the present invention provides an instrument channel assembly 10, with reference to Figure 2 - Figure 8 As shown, it is specifically configured with the following structure:

[0043] The instrument channel assembly 10 in this embodiment includes a pipe connector 11, a cover plate 12, and an instrument tube 14. The pipe connector 11 and the cover plate 12 are connected to fix the instrument tube 14 on the pipe connector 11 by covering it.

[0044] like Figure 7 As shown, the tube connector 11 includes a tube body 11a and a platform 11b integrally fixedly connected to the tube body 11a. The proximal end of the tube body 11a is configured as an instrument nozzle. An inlet channel 111, which passes through the tube body 11a, is provided inside the tube body 11a. The inlet channel 111 is circumferentially closed, and its proximal end is located at the instrument nozzle. A first groove 112 is provided on the top surface of the platform 11b. The first groove 112 is used to place the proximal end of the instrument tube 14, defining the arrangement path of the proximal end of the instrument tube 14. The top side of the first groove 112 is open to receive the bottom of the instrument tube 14. The first groove 112 is a circular groove with a central angle less than or equal to 180°, and the diameter of the first groove 112 is close to the outer diameter of the instrument tube 14, such that the proximal end of the instrument tube 14... Figure 4 As shown, once placed in the first groove 112, its left and right movement can be stably restricted.

[0045] like Figure 4 and Figure 6 As shown, the instrument tube 14 extends axially and has a proximal port and a distal port. The proximal end of the instrument tube 14 is provided with a tapered tube section 141. The diameter of the tapered tube section 141 gradually decreases from the proximal port to the distal end along the axis of the instrument tube 14, so that the instrument tube 14 forms a flared structure at the proximal end relative to the straight tube structure in its middle section and distal end.

[0046] like Figure 6 As shown, the cover plate 12 matches the shape of the platform 11b of the pipe connector 11 and can be fixed to the pipe connector 11 by bolts or post fitting. A third groove 121 is provided on the bottom surface of the cover plate 12, and the bottom side of the third groove 121 is open to receive the top of the instrument tube 14. Figure 8 As shown, after the cover plate 12 and the pipe connector 11 are closed, the third groove 121 on the cover plate 12 and the first groove 112 on the pipe connector 11 can be matched to form a circumferentially closed first mounting hole 13. The proximal end of the first mounting hole 13 is connected to the distal end of the inlet channel 111. The inner diameter of the first mounting hole 13 is approximately matched with the outer diameter of the instrument tube 14, so that the proximal end of the instrument tube 14 is located in the first mounting hole 13 and will not move arbitrarily.

[0047] like Figure 8As shown, the proximal end of the first mounting hole 13 is formed with a tapered hole which is tapered from its proximal end to its distal end. Since the first mounting hole 13 is formed by the first groove 112 and the third groove 121, the tapered hole can be formed by the proximal end of the first groove 112 and the proximal end of the third groove 121. Figure 6 Figure 8 As shown, the tapered hole is formed with a half-tapered hole groove 16 at the proximal end of the first groove 112 and the proximal end of the third groove 121.

[0048] As shown in Figs. 1 and 2, the proximal end of the instrument tube 14 is covered by the cover plate 12 and the platform 11b of the tube joint 11 when the instrument channel assembly 10 is assembled. Figure 3 and Figure 8 As shown, when the instrument tube 14 is connected to the tube joint 11, the tapered tube section 141 of the proximal end of the instrument tube 14 is located in the tapered hole of the first mounting hole 13 and is adapted to the tapered hole, and the proximal end of the tapered tube section 141 is connected to the distal end of the introduction channel 111, so that the instrument can smoothly enter the tapered tube section 141 of the proximal end of the instrument tube 14 after being introduced from the distal end of the introduction channel 111.

[0049] In this embodiment, the proximal end of the instrument tube 14 is provided with a tapered tube section 141 which is tapered from its proximal end, so that the proximal end of the instrument tube 14 is formed with a flared structure which can be used to more easily receive the instrument which is introduced from the distal end of the introduction channel 111 of the tube joint 11 and to provide central guidance for the instrument, so that the instrument can smoothly enter the instrument tube 14. As shown in Figs. 1 and 2, Figure 8 As shown, after the instrument tube 14 is connected to the tube joint 11, the tapered tube section 141 of the proximal end of the instrument tube 14 will form a tapered space between the distal end of the introduction channel 111 and the distal end of the tapered tube section 141, and the inner diameter of the tapered space will be larger at the distal end and will gradually decrease towards the proximal end. The existence of the tapered space will reduce the influence of the machining quality and the fitting relationship between the instrument tube 14 and the tube joint 11 on the fitting quality at the connection, and will effectively prevent the formation of a proximally-facing fitting step or protrusion which invades the channel of the instrument tube 14 at the proximal end of the instrument tube 14, so as to better ensure that the instrument will not collide with the proximal end of the instrument tube 14 and thus ensure the smooth passage of the instrument.

[0050] ​In the embodiment, the tube joint 11 is provided with a first groove 112 in addition to the introduction channel 111 for docking with the proximal end of the instrument tube 14, the first groove 112 extends from the distal end of the introduction channel 111 to the distal end of the instrument tube assembly 10, so that the proximal end of the instrument tube 14 can be placed in the first groove 112 for pre-positioning before the cover plate 12 is covered, and the instrument tube 14 is limited in the first mounting hole 13 by covering to complete the docking with the tube joint 11, which not only allows the instrument tube 14 with the proximal end of the tapered tube segment 141 to be conveniently and quickly installed on the tube joint 11, but also avoids the situation that the proximal end of the instrument tube 14 is squeezed and deformed by using the plug-in method, which can better ensure the docking quality of the proximal end of the instrument tube 14 with the tube joint 11 at the distal end of the introduction channel 111, thereby ensuring the smoothness of the instrument.

[0051] In the embodiment, the tapered hole formed by the docking between the tapered tube segment 141 of the instrument tube 14, the cover plate 12 and the tube joint 11 can also have an axial anti-extraction effect to a certain extent to prevent the instrument tube 14 from loosening.

[0052] According to some optional embodiments, as shown in Figure 8 The proximal end of the first groove 112 is coaxially connected to the distal end of the introduction channel 111 arranged in the tube body 11a, and the proximal end of the first groove 112 is provided with a tapered hole groove 16, the radius of the proximal end of the tapered hole groove 16 is greater than the radius of the distal end of the introduction channel 111, so that the tube body 11a end face between the proximal end of the tapered hole groove 16 and the distal end of the introduction channel 111 forms a first step surface 113 around the axis of the introduction channel 111. Referring to Figure 4 and Figure 8 After the instrument tube 14 is placed in the first groove 112, the tapered tube segment 141 of the proximal end of the instrument tube 14 is in the matching tapered hole groove 16 at the proximal end of the first groove 112, and the proximal end face of the tapered tube segment 141 axially abuts on the first step surface 113, which limits the axial position of the instrument tube 14, so that the instrument tube 14 can be in the correct installation position after being installed on the platform 11b of the tube joint 11 before the cover plate 12, ensuring good assembly quality with the tube joint 11, facilitating subsequent installation of the cover plate 12 and providing good covering quality.

[0053] According to some optional embodiments, as shown in Figure 7 The tube body 11a end face of the tube joint 11 is provided with a first brim 114 extending distally, the first brim 114 is located outside the first step surface 113, and the first brim 114 and the groove wall of the first groove 112 are arranged in radial opposition, so that a limiting space for clamping or radially limiting the proximal end of the instrument tube 14 is formed between the first brim 114 and the groove wall of the first groove 112.

[0054] For example, the first brim 114 is a cylindrical protrusion.

[0055] For example, as shown in Figure 7 the first brim 114 is an arc-shaped plate protrusion extending circumferentially around the axis of the lead-in channel 111, and the two ends of the first brim 114 are connected to the top side surface of the platform 11b respectively, so that the first brim 114 provided outside the first step surface 113 of the pipe joint 11 forms a socket hole with a larger inner diameter at the distal end side of the lead-in channel 111, which is composed of the slot wall of the first slot 112 and the inner side wall of the first brim 114. The socket hole can provide better radial positioning for the proximal end of the tapered tube segment 141 of the instrument tube 14, so as to effectively prevent the instrument tube 14 from falling off when the cover plate 12 is closed.

[0056] For example, as shown in Figure 8 after the instrument tube 14 is assembled with the pipe joint 11 and the cover plate 12, the first brim 114 extends distally to the outer wall of the proximal end of the tapered tube segment 141 of the instrument tube 14, and cooperates with the slot wall of the first slot 112 to implement radial positioning for the proximal end tip of the instrument tube 14.

[0057] In some embodiments, the radial distance between the inner side wall of the first brim 114 and the slot wall of the first slot 112 is equal to or slightly greater than the outer diameter of the proximal end of the tapered tube segment 141 of the instrument tube 14, so that the proximal end circumferential edge of the tapered tube segment 141 forms a radial seal with the part of the first brim 114 inner side wall and the first slot 112 slot wall in radial contact. In this way, the radial seal part formed between the socket hole and the proximal end circumferential edge of the tapered tube segment 141 can effectively prevent the glue from flowing from the outer wall of the tapered tube segment 141 to the proximal end of the tapered tube segment 141 to form a glue block that hinders the passage of the instrument. Preferably, the first brim 114 is an arc-shaped plate protrusion extending circumferentially around the axis of the lead-in channel 111, and the two ends of the first brim 114 are connected to the top side surface of the platform 11b respectively, so that the first brim 114 provided outside the first step surface 113 of the pipe joint 11 forms a socket hole with a larger inner diameter at the distal end side of the lead-in channel 111, which is composed of the slot wall of the first slot 112 and the inner side wall of the first brim 114. In this embodiment, the presence of the socket hole allows the proximal end of the instrument tube 14 to have an insertion process when it is installed on the platform 11b of the pipe joint 11, but the socket hole only reaches the proximal end tip of the instrument tube 14, so that the insertion path of the tapered tube segment 141 of the proximal end of the instrument tube 14 is short, and thus the deformation of the proximal end of the tapered tube segment 141 of the instrument tube 14 is controllable and easy to recover.

[0058] According to some optional embodiments, as shown in Figure 3 and Figure 8As shown, the cover plate 12 is provided with a glue injection hole 123 extending through from the top side surface to the bottom side surface, which points to the outer wall of the tapered tube segment 141. In this embodiment, the glue injection hole 123 on the cover plate 12 points to the outer wall of the tapered tube segment 141 of the instrument tube 14, and the injected glue can avoid directly impacting the tube segment on the distal end side of the tapered tube segment 141 of the instrument tube 14, preventing the generation of a protrusion that can affect the passage of the instrument, so as to ensure the smoothness of the passage of the instrument through the instrument tube 14.

[0059] According to some optional embodiments, as Figure 8 As shown, the hole diameter at the proximal end of the tapered tube segment 141 of the instrument tube 14 is greater than or equal to the hole diameter of the distal end of the introduction channel 111, so that after the proximal end face of the tapered tube segment 141 abuts on the first step face 113, no radially protruding part is generated on the distal end side of the introduction channel 111 to affect the passage of the instrument.

[0060] According to some optional embodiments, as Figure 8 As shown, the proximal end of the tapered tube segment 141 coaxially butts the distal end of the introduction channel 111.

[0061] In a second aspect, the present application provides a tee assembly 100 based on the above-mentioned embodiments, as Figure 2 - Figure 8 As shown, the tee assembly 100 includes the above-mentioned instrument channel assembly 10 and the suction tube 20.

[0062] The instrument channel assembly 10 includes the tube joint 11, the cover plate 12 and the instrument tube 14, and the tube joint 11 and the cover plate 12 are connected in a clamping manner to fix the instrument tube 14 on the tube joint 11.

[0063] As Figure 7 As shown, in addition to the introduction channel 111, the tube body 11a of the tube joint 11 is also provided with a side branch channel 115 laterally communicating with the introduction channel 111, and the side branch channel 115 is a circumferentially closed through hole, so that the tube body 11a constitutes a tee tube with an instrument nozzle. In addition to the first groove 112, the top side surface of the platform 11b of the tube joint 11 is also provided with a second groove 116 open on the top side, and the distal end of the second groove 116 is connected with the proximal end of the side branch channel 115. The second groove 116 is used to receive the top of the suction tube 20.

[0064] As Figure 6As shown, the bottom side surface of the cover plate 12 of the instrument channel assembly 10 is provided with a fourth groove 122 open at the bottom side in addition to the third groove 121, and the fourth groove 122 is used to receive the bottom of the suction tube 20. The cover plate 12 is shaped to match the platform 11b of the tube joint 11, and can be fixed with the tube joint 11 by being bolted or cooperatively fitted on the platform 11b. After the cover plate 12 is bolted on the platform 11b of the tube joint 11, the fourth groove 122 on the cover plate 12 and the second groove 116 on the platform 11b of the tube joint 11 are matched to form a circumferentially closed second mounting hole 15, and the distal end of the second mounting hole 15 coaxially connects with the proximal end of the side branch channel 115, and the distal end of the suction tube 20 is located in the second mounting hole 15, and the distal end of the suction tube 20 is connected with the proximal end of the side branch channel 115.

[0065] The inner diameter of the second mounting hole 15 is substantially matched with the outer diameter of the suction tube 20, so that the distal end of the suction tube 20 located in the first mounting hole 13 cannot be moved at will.

[0066] In this embodiment, the instrument tube 14 and the suction tube 20 can be connected and installed in one step by bolting the cover plate 12 on the tube joint 11 to form a tee assembly 100, which simplifies the installation steps. The distal end of the suction tube 20 and the proximal end of the instrument tube 14 can be placed in the second groove 116 and the first groove 112 respectively for pre-positioning before the cover plate 12 is bolted, and the suction tube 20 and the instrument tube 14 are limited in the second mounting hole 15 and the first mounting hole 13 by bolting the cover plate 12 to be connected with the tube joint 11, which can avoid the insertion deformation at the proximal end of the instrument tube 14 and the distal end of the suction tube 20 to affect the smoothness of the suction.

[0067] According to some optional embodiments, as shown in Figure 7 As shown, the second groove 116 provided on the platform 11b of the tube joint 11 is coaxially provided with the side branch channel 115 provided in the tube body 11a, and the radius of the second groove 116 is greater than the radius of the side branch channel 115, so that the tube joint 11 forms a second step surface 117 extending around the axis of the side branch channel 115 on the end surface between the distal end of the second groove 116 and the proximal end of the side branch channel 115. As shown in Figure 8 As shown, after the cover plate 12 is bolted on the platform 11b of the tube joint 11, the distal end of the suction tube 20 can be axially limited by abutting against the second step surface 117.

[0068] According to some optional embodiments, as shown in Figure 7 and Figure 8 As shown, the tube joint 11 is provided with a second brim 118 extending to the proximal end side of the side branch channel 115 on the end surface of the second step surface 117, and the second brim 118 is located on the outer side of the second step surface 117. As shown in Figure 8As shown, after the cover plate 12 is covered on the platform 11b of the pipe joint 11, the second brim 118 extends to the periphery of the distal tip of the suction tube 20, and the periphery of the distal tip of the suction tube 20 is in radial contact with the inner wall of the second brim 118 and the groove wall of the second groove 116 to form a radial seal.

[0069] As shown, the second brim 118 is an arc-shaped plate-shaped protrusion extending in the circumferential direction of the axis of the side branch passage 115.

[0070] As shown, the second brim 118 is an arc-shaped plate-shaped protrusion extending in the circumferential direction of the axis of the side branch passage 115. Figure 7 As shown, the second brim 118 is an arc-shaped plate-shaped protrusion extending in the circumferential direction of the axis of the side branch passage 115.

[0071] As shown, the second brim 118 is an arc-shaped plate-shaped protrusion extending in the circumferential direction of the axis of the side branch passage 115.

[0072] In a third aspect, the present application provides an endoscope 200, as shown in Figure 1 and Figure 2 As shown, the endoscope 200 comprises a housing 210 and the three-way assembly 100 of any of the above embodiments installed in the housing 210, and further comprises a negative pressure suction valve connected to the proximal end of the suction tube 20 in the three-way assembly 100, and the negative pressure suction valve is installed in the housing 210.

[0073] According to some optional embodiments, the pipe body 11a of the pipe joint 11 in the three-way assembly 100 is arranged to clamp the instrument mouth at the instrument mouth mounting hole of the housing 210, and the platform 11b is placed on the top surface of the support frame 220 arranged in the housing 210. The top of the support frame 220 is provided with a rope groove 230 for guiding the traction rope, and the platform 11b can close the top side of the rope groove 230 after being placed on the top surface of the housing 210, preventing the traction rope from escaping from the rope groove 230.

[0074] Exemplarily, the platform 11b of the tube joint 11 can be fixed by bolts after being placed on the top surface of the support frame 220.

[0075] In a fourth aspect, the present application provides a method for assembling an instrument tube, which involves the instrument channel assembly 10 in any of the above embodiments or the instrument tube 14 in the bronchoscope 200 in any of the above embodiments.

[0076] The method for assembling the instrument tube includes the following steps:

[0077] Step S1: Place the proximal end of the instrument tube 14 in the first groove 112 provided on the platform 11b of the tube joint 11, and ensure that the tapered tube segment 141 provided on the proximal end of the instrument tube 14 is in the tapered hole groove 16 at the proximal end of the first groove 112, and the proximal end of the tapered tube segment 141 is butted against the distal end of the introduction channel 111.

[0078] Step S2: After aligning the third groove 121 provided on the cover plate 12 with the first groove 112 provided on the platform 11b, press the cover plate 12 downward to cover the tube joint 11, so that the third groove 121 and the first groove 112 are matched to form the first mounting hole 13 for clamping the instrument tube 14, and ensure that the tapered tube segment 141 of the instrument tube 14 is located in the tapered hole of the first mounting hole 13.

[0079] According to some optional embodiments, before step S1, glue is applied on the groove wall of the first groove 112 provided on the platform 11b of the tube joint 11, and glue is also applied on the groove wall of the third groove 121 provided on the cover plate 12.

[0080] According to some other optional embodiments, the method further includes step S3: After the cover plate 12 is covered on the tube joint 11, inject glue into the first mounting hole 13 through the glue injection hole 123 provided on the cover plate 12. The glue can be UV glue or the like.

[0081] The bronchoscope, nephroscope, esophagoscope, gastroscope, enteroscope, otoscope, nasoscope, oral mirror, laryngoscope, colposcope, laparoscope, arthroscope, etc. involved in the embodiments of the present application are not limited in type.

[0082] It should be noted that, in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device that includes the element.

[0083] Furthermore, it is to be understood that the scope of the methods and apparatus of the present application are not limited by the order of execution or by sequential execution of such steps. That is, the steps can be performed in any order, and embodiments of the present application can be performed sequentially or in parallel by processes not requiring maintenance of a sequential execution order. Moreover, certain features that are, for clarity, described above and depicted in the drawings can be combined unless the context explicitly specifies otherwise. Additionally, features described as being part of one example can be combined with features of another example.

[0084] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. An instrument channel assembly, characterized by: The apparatus tube (14) is provided with a tapered tube section (141) gradually narrowing along its axis from the proximal end to the distal aperture; The tube joint (11) is provided with a circumferentially closed introduction channel (111) and a top-side open first groove (112) in which the proximal end of the apparatus tube (14) can be placed; The cover plate (12) covers the tube joint (11) and is provided with a bottom-side open third groove (121) which, in conjunction with the first groove (112), forms a first mounting hole (13) in which the proximal end of the apparatus tube (14) is located, the tapered tube section (141) is located in and fits the tapered hole, and the proximal end of the tapered tube section (141) is in butt joint with the distal end of the introduction channel (111). The tube joint (11) includes a tube body (11a) and a platform (11b) fixedly connected to the tube body (11a), the tube body (11a) is provided with the introduction channel (111) therethrough, and the platform (11b) is provided with the first groove (112) on its surface. The proximal end of the first groove (112) is coaxially connected to the distal end of the introduction channel (111), and the radius of the proximal end of the first groove (112) is greater than the radius of the distal end of the introduction channel (111), so that the tube joint (11) forms a first step surface (113) around the axis of the introduction channel (111) between the proximal end of the first groove (112) and the distal end of the introduction channel (111), and the proximal end surface of the tapered tube section (141) axially abuts against the first step surface (113).

2. An instrument access assembly according to claim 1, wherein: The tube joint (11) is provided with a first brim (114) extending to the proximal end of the tapered tube section (141) on the outer side of the first step surface (113), the first brim (114) is arranged opposite to the groove wall of the first groove (112) in the radial direction, and the proximal end outer wall of the tapered tube section (141) is in radial contact with the inner wall of the first brim (114) and the groove wall of the first groove (112) to form a radial seal.

3. An instrument access assembly according to claim 1, wherein: The cover plate (12) is provided with a glue injection hole (123) pointing to the outer wall of the tapered tube section (141).

4. An instrument access assembly according to claim 3, wherein: The aperture at the proximal end of the tapered tube section (141) is greater than or equal to the aperture of the distal end of the introduction channel (111); 5. An instrument access assembly according to claim 1, wherein: And / or, the proximal end of the tapered tube section (141) is in coaxial butt joint with the distal end of the introduction channel (111).

6. An instrument access assembly according to claim 1, wherein: The apparatus tube (14) is provided with a tapered tube section (141) gradually narrowing along its axis from the proximal end to the distal aperture; The tube joint (11) is provided with a circumferentially closed introduction channel (111) and a top-side open first groove (112) in which the proximal end of the apparatus tube (14) can be placed; 7. A tee assembly characterized by: The cover plate (12) covers the tube joint (11) and is provided with a bottom-side open third groove (121) which, in conjunction with the first groove (112), forms a first mounting hole (13) in which the proximal end of the apparatus tube (14) is located, the tapered tube section (141) is located in and fits the tapered hole, and the proximal end of the tapered tube section (141) is in butt joint with the distal end of the introduction channel (111). The tube joint (11) includes a tube body (11a) and a platform (11b) fixedly connected to the tube body (11a), the tube body (11a) is provided with the introduction channel (111) therethrough, and the platform (11b) is provided with the first groove (112) on its surface. The proximal end of the first groove (112) is coaxially connected to the distal end of the introduction channel (111), and the radius of the proximal end of the first groove (112) is greater than the radius of the distal end of the introduction channel (111), so that the tube joint (11) forms a first step surface (113) around the axis of the introduction channel (111) between the proximal end of the first groove (112) and the distal end of the introduction channel (111), and the proximal end surface of the tapered tube section (141) axially abuts against the first step surface (113). The tube joint (11) is provided with a first brim (114) extending to the proximal end of the tapered tube section (141) on the outer side of the first step surface (113), the first brim (114) is arranged opposite to the groove wall of the first groove (112) in the radial direction, and the proximal end outer wall of the tapered tube section (141) is in radial contact with the inner wall of the first brim (114) and the groove wall of the first groove (112) to form a radial seal. The cover plate (12) is provided with a glue injection hole (123) pointing to the outer wall of the tapered tube section (141). The apparatus tube (14) is provided with a tapered tube section (141) gradually narrowing along its axis from the proximal end to the distal aperture; The tube joint (11) is provided with a circumferentially closed introduction channel (111) and a top-side open first groove (112) in which the proximal end of the apparatus tube (14) can be placed; The cover plate (12) covers the tube joint (11) and is provided with a bottom-side open third groove (121) which, in conjunction with the first groove (112), forms a first mounting hole (13) in which the proximal end of the apparatus tube (14) is located, the tapered tube section (141) is located in and fits the tapered hole, and the proximal end of the tapered tube section (141) is in butt joint with the distal end of the introduction channel (111). The pipe joint (11) of the instrument channel assembly (10) is further provided with a circumferentially closed side branch channel (115) in lateral communication with the introduction channel (111) in the pipe joint (11) and a top side open second groove (116); The cover plate (12) of the instrument channel assembly (10) is further provided with a bottom side open fourth groove (122), which is in conjunction with the second groove (116) to form a second mounting hole (15) with a distal end port communicating with a proximal end port of the side branch channel (115); The distal end of the suction tube (20) is located in the second mounting hole (15), and the distal end port of the suction tube (20) is in butt joint with the proximal end port of the side branch channel (115).

8. A tee assembly according to claim 7, wherein: The second groove (116) is coaxially arranged with the side branch channel (115), and the radius of the second groove (116) is greater than the radius of the side branch channel (115), so that the pipe joint (11) forms a second step surface (117) around the axis of the side branch channel (115) between the distal end port of the second groove (116) and the proximal end port of the side branch channel (115), and the distal end of the suction tube (20) axially abuts against the second step surface (117); The pipe joint (11) is provided with a second brim (118) extending proximally to the peripheral side of the distal end tip of the suction tube (20) outside the second step surface (117), and the peripheral edge of the distal end tip of the suction tube (20) is in radial contact with the inner wall of the second brim (118) and the groove wall of the second groove (116) to form a radial seal.

9. An endoscope characterized by: The three-way assembly (100) of claim 7 or 8.

10. An instrument tube assembly method characterized by: Assembly of an instrument tube (14) in the instrument channel assembly (10) of any one of claims 1-6 or the three-way assembly (100) of claim 7 or 8 or the endoscope (200) of claim 9; Comprising the following steps: Placing the instrument tube (14) in the first groove (112) so that the tapered tube segment (141) is in the taper hole groove (16) arranged proximally in the first groove (112) and the proximal end port of the tapered tube segment (141) is in butt joint with the distal end port of the introduction channel (111); Covering the cover plate (12) to the pipe joint (11) so that the third groove (121) is aligned with the first groove (112) to press down to form the first mounting hole (13) clamping the instrument tube (14) in conjunction with the first groove (112), and the tapered tube segment (141) of the instrument tube (14) is located in the tapered hole of the first mounting hole (13). The pipe joint (11) of the instrument channel assembly (10) is further provided with a circumferentially closed side branch channel (115) in lateral communication with the introduction channel (111) in the pipe joint (11) and a top side open second groove (116); The cover plate (12) of the instrument channel assembly (10) is further provided with a bottom side open fourth groove (122), which is in conjunction with the second groove (116) to form a second mounting hole (15) with a distal end port communicating with a proximal end port of the side branch channel (115); The distal end of the suction tube (20) is located in the second mounting hole (15), and the distal end port of the suction tube (20) is in butt joint with the proximal end port of the side branch channel (115). The second groove (116) is coaxially arranged with the side branch channel (115), and the radius of the second groove (116) is greater than the radius of the side branch channel (115), so that the pipe joint (11) forms a second step surface (117) around the axis of the side branch channel (115) between the distal end port of the second groove (116) and the proximal end port of the side branch channel (115), and the distal end of the suction tube (20) axially abuts against the second step surface (117); The pipe joint (11) is provided with a second brim (118) extending proximally to the peripheral side of the distal end tip of the suction tube (20) outside the second step surface (117), and the peripheral edge of the distal end tip of the suction tube (20) is in radial contact with the inner wall of the second brim (118) and the groove wall of the second groove (116) to form a radial seal.

Images