Endoscope guide structure and endoscope

Abstract

The utility model provides an endoscope guiding structure and an endoscope, the endoscope comprises an instrument channel tube and the endoscope guiding structure, the endoscope guiding structure comprises a fixing piece and a guiding piece, and the fixing piece is provided with an instrument channel tube channel and a first positioning plane; a guiding channel is defined by the guiding piece, the guiding piece is detachably connected to the fixing piece and located on one side of the fixing piece in the first direction, the instrument channel pipe channel penetrates through the fixing piece and the first positioning plane in the first direction, and the guiding channel is communicated with the instrument channel pipe channel; the instrument channel tube is provided with an input end and a working end, the input end is contained in an instrument channel tube channel, and the working end is located on the side, in the first direction, of the instrument channel tube relative to the input end. The instrument channel pipe is connected to the fixing piece, and the input end of the instrument channel pipe is flush with the first positioning plane. The endoscope guide structure can improve the manufacturing precision of the endoscope, and the manufacturing method of the endoscope guide structure can ensure that the size of the hose meets the actual requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to an endoscope guide structure and an endoscope. Background Art

[0002] In the related art, an endoscope protects surgical instruments through an instrument channel provided inside the instrument channel tube, so that the surgical instruments can be transported into the human body. During the production process, the length of the instrument channel tube needs to be determined in advance, and one end of the instrument channel tube needs to be assembled with other parts of the endoscope. Due to the manufacturing tolerance and assembly tolerance of the instrument channel tube in the above process, there is often a large gap between the design size and actual size between the other end of the instrument channel tube and other parts of the endoscope. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an endoscope guide structure, which is conducive to reducing the gap between the design size and the actual size between one end of the instrument channel tube in the endoscope and other parts of the endoscope during the production process.

[0004] The utility model also provides an endoscope with the endoscope guiding structure.

[0005] The utility model also provides a method for manufacturing an endoscope.

[0006] According to some embodiments of the utility model, the endoscope guide structure is used to install an instrument channel tube, the instrument channel tube defines an instrument channel, and the instrument channel is used to allow surgical instruments to pass through, characterized in that the endoscope guide structure includes:

[0007] a fixing member, the fixing member having an instrument channel tube passage and a first positioning plane, the instrument channel tube passage being used to accommodate the instrument channel tube;

[0008] A guide member, wherein the guide member defines a guide channel, the guide member is detachably connected to the fixing member and is located on one side of the fixing member in a first direction, and the instrument channel tube channel passes through the fixing member and the first positioning plane along the first direction; the guide channel is used for guiding surgical instruments and is connected to the instrument channel tube channel.

[0009] The endoscope guide structure according to the embodiment of the utility model has at least the following beneficial effects: since the guide member is detachably connected to the fixing member, before the guide member is detachably connected to the fixing member, the staff can use the first positioning plane as a reference and control the distance between the first positioning plane and one end of the instrument channel tube, so that the length of the instrument channel tube can be determined before installation to see whether it can meet the actual requirements, which is beneficial to reducing the gap between the design size and the actual size between one end of the instrument channel tube in the endoscope and other parts of the endoscope.

[0010] According to some embodiments of the present utility model, the instrument channel tube is divided into an instrument channel tube guide section and a channel section which are sequentially connected along the first direction; along the first direction, the cross-sectional area of ​​the inner wall of the instrument channel tube guide section perpendicular to the first direction gradually decreases to the same as the cross-sectional area of ​​the channel section.

[0011] According to some embodiments of the present invention, the guide member has a second positioning plane, the second positioning plane is located at one end of the guide channel in the opposite direction of the first direction, and the second positioning plane abuts against the first positioning plane.

[0012] According to some embodiments of the utility model, the guide member also has a guide hole, which is connected to the guide channel, and the guide channel is connected to the instrument channel tube channel through the guide hole; along the first direction, the projection of the inner wall of the guide hole is accommodated in the projection of the inner wall of the instrument channel tube channel.

[0013] According to some embodiments of the utility model, the guide member includes a guide body and a guide wall, the guide body has the guide channel; the guide wall is connected to a side of the guide body opposite to the first direction, the guide wall has a second positioning plane and the guide hole, the second positioning plane is located at one end of the guide hole opposite to the first direction, and the second positioning plane abuts against the first positioning plane.

[0014] According to some embodiments of the utility model, the guide member includes a guide body and a mounting portion, the guide body has the guide channel, and the mounting portion is connected to a side of the guide body opposite to the first direction; the fixing member has a receiving groove, the receiving groove is recessed in the opposite direction of the first direction and accommodates the mounting portion.

[0015] According to some embodiments of the utility model, the mounting portion has a positioning groove, which extends along the first direction; the fixing member includes a positioning portion, which protrudes radially toward the instrument channel tube channel relative to the inner wall of the accommodating groove and extends along the first direction, and the positioning portion is accommodated in the positioning groove.

[0016] According to some embodiments of the utility model, the guide member also includes a snap-fit ​​structure, which is elastic and includes an extension section and a bending section, the extension section is connected to the side of the mounting portion opposite to the first direction, the bending section is connected to the side of the extension section opposite to the first direction and is bent relative to the extension section; the fixing member also has a snap-fit ​​hole, the snap-fit ​​hole is connected to the side of the accommodating groove opposite to the first direction, and the bending section can pass through the snap-fit ​​hole and abut against the side of the fixing member opposite to the first direction.

[0017] According to some embodiments of the utility model, the bending section is bent along a second direction relative to the extension section, and the second direction is perpendicular to the first direction; the extension section has a first limiting surface on the opposite side of the second direction, and the inner wall of the locking hole has a second limiting surface facing the second direction; along the second direction, the minimum spacing between the first limiting surface and the second limiting surface is greater than the protrusion length of the bending section relative to the extension section.

[0018] An endoscope according to some embodiments of the present invention includes:

[0019] An endoscope guide structure as described in any one of the above embodiments;

[0020] An instrument channel tube, wherein the instrument channel tube defines an instrument channel for passing surgical instruments, wherein the instrument channel tube has an input end and a working end along the length direction of the instrument channel tube, wherein the input end is accommodated in the instrument channel tube channel, and the working end is on one side of the instrument channel tube in the first direction relative to the input end; the instrument channel tube is connected to the fixing member, and the input end of the instrument channel tube is flush with the first positioning plane.

[0021] The endoscope according to the embodiment of the utility model has at least the following beneficial effects: since the guide member of the endoscope is detachably connected to the fixing member, before the guide member is detachably connected to the fixing member, the staff can use the first positioning plane as a reference and control the distance between the first positioning plane and the output end of the instrument channel tube, so that the length of the instrument channel tube can be determined before installation to see whether it can meet the actual requirements; after the endoscope is assembled, since the input end of the instrument channel tube is flush with the first positioning plane, the distance between the input end and the output end of the instrument channel tube can meet the actual length requirements.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 It is an overall schematic diagram of the endoscope of some embodiments of the utility model;

[0025] Figure 2 It is a front view of the endoscope of some embodiments of the utility model;

[0026] Figure 3 for Figure 2 The cross-sectional view shown in AA;

[0027] Figure 4 for Figure 3 Schematic diagram of the fixing parts;

[0028] Figure 5 for Figure 3 Schematic diagram of the middle guide;

[0029] Figure 6 for Figure 3 A partial enlarged view shown at B;

[0030] Figure 7 for Figure 3 The cross-sectional view shown in CC;

[0031] Figure 8 for Figure 5 A partial enlarged view shown at D;

[0032] Fig. 9 for Figure 8 Schematic diagram of the middle guide and fixing parts after assembly.

[0033] Reference numerals:

[0034] Endoscope 10;

[0035] Instrument channel tube 100; instrument channel 110;

[0036] Endoscope guide structure 200; fixing member 210; instrument channel tube channel 211; instrument channel tube guide section 2111; channel section 2112; first positioning plane 212; accommodating groove 213; positioning portion 214; snap-fit ​​hole 215; second limiting surface 216; guide member 220; guide channel 221; second positioning plane 222; guide hole 223; guide body 224; guide wall 225; mounting portion 226; positioning groove 2261; snap structure 227; extension section 2271; first limiting surface 2271a; bending section 2272. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] In the prior art, an endoscope transports surgical instruments to a certain part through an instrument channel of an instrument channel tube provided inside the endoscope, and the instrument channel tube has an input end and a working end, the input end of the instrument channel tube is used to receive surgical instruments, and the working end of the instrument channel tube is used to extend into the human body. In the manufacturing process of the endoscope, since the working end of the instrument channel tube is provided with precision instruments, when installing the instrument channel tube, it is usually necessary to extend the input end of the instrument channel tube into the shell of the endoscope, and make the guide structure of the endoscope cover the input end, so that the surgical instruments can enter the instrument channel through the guide channel; the staff cannot make further adjustments to the length of the instrument channel tube that has been installed in the internal structure of the endoscope, so the length of the instrument channel tube needs to be confirmed before being installed in the endoscope; therefore, the actual distance between the working end of the instrument channel tube and the guide structure will be affected by the tolerance of the length of the instrument channel tube itself and the assembly tolerance of the instrument channel tube, so that there is a large gap between the design size and the actual size between one end of the instrument channel tube and other parts of the endoscope.

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in view of the above situation, the present invention proposes an endoscope guide structure 200 and an endoscope 10 including the endoscope guide structure 200 .

[0044] In some embodiments, the endoscope guide structure 200 is used to install the instrument channel tube 100, the instrument channel tube 100 defines an instrument channel 110, and the instrument channel 110 is used to allow surgical instruments to pass through. The endoscope guide structure 200 includes a fixing member 210 and a guide member 220. The fixing member 210 has an instrument channel tube channel 211 and a first positioning plane 212; the first positioning plane 212 is located at the instrument channel tube channel 211 in the first direction (i.e. Figure 1 , Figure 2 , Figure 3 , Figure 4 The first positioning plane 212 is perpendicular to the first direction; the instrument channel tube channel 211 passes through the fixing member 210 along the first direction and is used to accommodate the instrument channel tube 100; the guide member 220 is detachably connected to the fixing member 210, and the guide member 220 defines a guide channel 221; the guide channel 221 is used for guiding surgical instruments and is connected to one side of the instrument channel tube channel 211 in the first direction.

[0045] Through the above scheme, since the guide member 220 is detachably connected to the fixing member 210, before the guide member 220 is detachably connected to the fixing member 210, the staff can use the first positioning plane 212 as a reference and control the distance between the first positioning plane 212 and one end of the instrument channel tube 100, so that the length of the instrument channel tube 100 can be determined before installation to see whether it can meet the actual requirements, which is beneficial to reducing the gap between the design size and the actual size between one end of the instrument channel tube 100 and other parts of the endoscope in the production process.

[0046] For more information, see Figure 2 , Figure 3 As shown, according to some embodiments of the present invention, the staff installs a device having an input terminal (i.e. Figure 3 The instrument channel tube 100 has an end close to the endoscope guide structure 200 and a working end (i.e. Figure 3 The end of the middle instrument channel tube 100 away from the endoscope guide structure 200, Figure 3 When installing an instrument channel tube 100 (not shown in the figure), if the instrument channel tube 100 collides with other structures in the endoscope and bends, the straightness of the instrument channel tube 100 can be optimized by stretching the instrument channel tube 100 in the instrument channel tube channel 211. The staff can also use the first positioning plane 212 as a reference to control the distance between the working end of the instrument channel tube 100 and the first positioning plane 212, and confirm the distance between the input end of the instrument channel tube 100 and the first positioning plane 212, so as to confirm whether the length of the instrument channel tube 100 meets the actual requirements; when the length of the instrument channel tube 100 does not meet the actual requirements, since the instrument channel tube 100 has not yet been connected to the fixing member 210, the staff can directly remove the instrument channel tube 100 from the instrument channel tube channel 211 and install a new instrument channel tube 100.

[0047] In some embodiments, the endoscope 10 includes the endoscope guide structure 200 in the above embodiments and an instrument channel tube 100, the instrument channel tube 100 defines an instrument channel 110, the instrument channel 110 is used to allow surgical instruments to pass through, the instrument channel tube 100 has an input end and a working end along the length direction of the instrument channel tube 100, the input end is accommodated in the instrument channel tube channel 211, and the working end is on the side of the instrument channel tube 100 in the first direction relative to the input end; the instrument channel tube 100 is connected to the fixing member 210, and the input end of the instrument channel tube 100 is flush with the first positioning plane 212.

[0048] Through the above scheme, since the guide member 220 of the endoscope 10 is detachably connected to the fixing member 210, before the guide member 220 is detachably connected to the fixing member 210, the staff can use the first positioning plane 212 as a reference and control the distance between the first positioning plane 212 and the output end of the instrument channel tube 100, so that the length of the instrument channel tube 100 can be determined before installation to see whether it can meet the actual requirements; after the endoscope 10 is manufactured, since the input end of the instrument channel tube 100 is flush with the first positioning plane 212, the distance between the input end and the output end of the instrument channel tube 100 can meet the actual length requirements.

[0049] Those skilled in the art can use the endoscope guide structure 200 and the instrument channel tube 100 in the above embodiment to manufacture the endoscope 10 in the above embodiment. The specific steps are as follows:

[0050] The length of the instrument channel tube 100 is set to a first length.

[0051] The input end is located on one side of the working end in the first direction, the input end passes through the instrument channel tube channel 211, the working end and the first positioning plane 212 have a second length along the first direction, and the first length is greater than the second length.

[0052] The instrument channel tube 100 is fixed to the fixing member 210 .

[0053] The portion of the input end that extends in the opposite direction relative to the positioning plane along the first direction is removed.

[0054] The guide member 220 is connected to the fixing member 210 .

[0055] Through the above scheme, those skilled in the art can reasonably set the value of the second length according to needs to determine the distance between the working end of the instrument channel tube 100 and the first positioning plane 212. Since the length of the instrument channel tube 100 is the first length, and the first length is greater than the second length, after the instrument channel tube 100 passes through the instrument channel tube channel 211 and is fixed to the fixing member 210, the other end of the instrument channel tube 100 will inevitably extend relative to the first positioning plane 212. Then, after the extended portion is removed, the length of the instrument channel tube 100 is equal to the second length.

[0056] From the perspective of manufacturing accuracy, since the length of the instrument channel tube 100 in the prior art needs to be confirmed before being installed in the endoscope 10, there is a manufacturing tolerance in the length of the instrument channel tube 100, and there is also an assembly tolerance when the instrument channel tube 100 is installed in the endoscope 10, so the difference between the actual distance and the designed distance between the working end of the instrument channel tube 100 and the fixing member 210 is relatively large; while the above-mentioned embodiment can directly determine the distance between the first positioning plane 212 on the fixing member 210 and the working end of the instrument channel tube 100, without considering the machining tolerance of the length of the instrument channel tube 100 and the assembly tolerance between the instrument channel tube 100 and the endoscope guide structure 200, so the precision requirements for the manufacture and assembly of the instrument channel tube 100 can be reduced during the manufacturing process of the endoscope 10, and it is ensured that the length of the instrument channel tube 100 meets the design requirements.

[0057] For further information, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown, in some embodiments, after removing the portion of the input end that extends in the opposite direction relative to the positioning plane in the first direction, the gap between the wall surface of the instrument channel tube channel 211 and the instrument channel tube 100 is closed. The above solution can make the circumferential surface of the instrument channel tube 100 tightly combined with the fixing member 210, prevent the instrument channel tube 100 from radial deformation and avoid shrinking of the instrument channel 110.

[0058] The above text has described the specific structure and corresponding beneficial effects of the endoscope guide structure 200 of the present invention. Without departing from the inventive concept of the present invention, improvements may be made to the above embodiments.

[0059] For further information, please refer to Figure 2 , Figure 3 , Figure 4 As shown, in some embodiments, the instrument channel tube channel 211 is divided into an instrument channel tube guide section 2111 and a channel section 2112 which are sequentially connected along a first direction; along the first direction, the cross-sectional area of ​​the inner wall of the instrument channel tube guide section 2111 perpendicular to the first direction gradually decreases to the same as the cross-sectional area of ​​the channel section 2112. Through the above scheme, when the instrument channel tube 100 enters the instrument channel tube channel 211 along the first direction, the instrument channel tube guide section 2111 can play a guiding role, making it easier for the instrument channel tube 100 to enter the instrument channel tube channel 211, thereby facilitating the installation of the instrument channel tube 100.

[0060] For further information, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, in some embodiments, the guide member 220 has a second positioning plane 222, the second positioning plane 222 is located at one end of the guide channel 221 in the opposite direction of the first direction, and the second positioning plane 222 abuts against the first positioning plane 212. Through the above scheme, the gap between the guide member 220 and the fixing member 210 can be reduced by the abutment of the first positioning plane 212 and the second positioning plane 222, thereby reducing the risk of the surgical instrument entering between the guide member 220 and the fixing member 210 due to improper operation after passing through the guide channel 221.

[0061] For further information, please refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in some embodiments, the guide member 220 further has a guide hole 223, the guide hole 223 is connected to the guide channel 221, and the guide channel 221 is connected to the instrument channel tube channel 211 through the guide hole 223; along the first direction, the projection of the inner wall of the guide hole 223 is accommodated in the projection of the inner wall of the instrument channel tube channel 211. Through the above scheme, since the projection of the inner wall of the guide hole 223 is accommodated in the projection in the instrument channel tube channel 211, during the actual operation of the endoscope 10, the surgical instrument passing through the guide hole 223 in the reverse direction of the first direction can smoothly enter the instrument channel 110 of the instrument channel tube 100 whose inner diameter is greater than a certain inner diameter of the guide hole 223, reducing the possibility of the surgical instrument being blocked by the end face of the instrument channel tube 100.

[0062] For further information, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, in some embodiments, the guide member 220 includes a guide body 224 and a guide wall 225, the guide body 224 has a guide channel 221; the guide wall 225 is connected to the side of the guide body 224 opposite to the first direction, and the guide wall 225 has a second positioning plane 222 and a guide hole 223, the second positioning plane 222 is located at one end of the guide hole 223 opposite to the first direction, and the second positioning plane 222 abuts against the first positioning plane 212. The above-mentioned scheme of reducing the risk of the surgical instrument entering between the guide member 220 and the fixing member 210 due to improper operation after passing through the guide channel 221 by using the first positioning plane 212 and the second positioning plane 222 has been described. On the basis of the above embodiment, a guide hole 223 is provided, and the projection of the inner wall of the guide hole 223 is accommodated in the projection of the inner wall of the instrument channel tube channel 211, which can further reduce the risk of the surgical instrument entering between the guide member 220 and the fixing member 210 after passing through the guide channel 221.

[0063] For further information, please refer to Figure 3, Figure 4 , Figure 5 As shown, in some embodiments, the guide member 220 includes a guide body 224 and a mounting portion 226, the guide body 224 has a guide channel 221, and the mounting portion 226 is connected to a side of the guide body 224 opposite to the first direction; the fixing member 210 has a receiving groove 213, which is recessed in the opposite direction of the first direction and accommodates the mounting portion 226. Through the above scheme, the guide member 220 can be positioned through the mounting portion 226 and the receiving groove 213 on the fixing member 210, so that the guide member 220 can be installed on the fixing member 210.

[0064] For further information, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, in some embodiments, the mounting portion 226 has a positioning groove 2261, and the positioning groove 2261 extends along the first direction; the fixing member 210 includes a positioning portion 214, and the positioning portion 214 protrudes radially toward the instrument channel tube passage 211 relative to the inner wall of the accommodating groove 213 and extends along the first direction, and the positioning portion 214 is accommodated in the positioning groove 2261. Through the above scheme, the positioning portion 214 protruding radially toward the instrument channel tube passage 211 can limit the rotation stroke of the mounting portion 226, thereby reducing the relative rotation between the guide member 220 and the fixing member 210.

[0065] As a preferred solution, according to some embodiments of the present invention, the shapes of the positioning portion 214 and the positioning groove 2261 are completely matched, so the positioning portion 214 and the positioning groove 2261 can completely prevent the relative rotation between the guide member 220 and the fixing member 210.

[0066] For further information, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig. 9 As shown, in some embodiments, the guide member 220 further includes a buckle structure 227, which is elastic and includes an extension section 2271 and a bending section 2272, wherein the extension section 2271 is connected to the side of the mounting portion 226 opposite to the first direction, and the bending section 2272 is connected to the side of the extension section 2271 opposite to the first direction and is bent relative to the extension section 2271; the fixing member 210 further includes a buckle hole 215, which is connected to the side of the accommodating groove 213 opposite to the first direction, and the bending section 2272 can pass through the buckle hole 215 and abut against the side of the fixing member 210 opposite to the first direction. Through the above scheme, the guide member 220 can be buckled on the fixing member 210 through the buckle structure 227, thereby realizing a detachable connection between the guide member 220 and the fixing member 210.

[0067] As a preferred solution in the above embodiment, please refer to Fig. 9 As shown, according to some embodiments of the present invention, the bending section 2272 is relative to the extending section 2271 along the second direction (ie Fig. 9 The second direction is perpendicular to the first direction; the extension section 2271 has a first limiting surface 2271a on the opposite side of the second direction, and the inner wall of the engaging hole 215 has a second limiting surface 216 facing the second direction; along the second direction, the minimum spacing D2 between the first limiting surface 2271a and the second limiting surface 216 is greater than the protrusion length D1 of the bending section 2272 relative to the extension section 2271. Through the above scheme, since the first limiting surface 2271a and the second limiting surface 216 have a spacing in the second direction, the extension section 2271 on the snap structure 227 can be deformed toward the second direction in the snap hole 215; and in the second direction, when the minimum spacing D2 between the first limiting surface 2271a and the second limiting surface 216 is greater than the protruding length D1 of the bending section 2272 relative to the extension section 2271, the snap structure 227 can deform the extension section 2271 to enable the bending section 2272 to enter the snap hole 215, thereby releasing the snap connection between the guide member 220 and the fixing member 210.

[0068] It should be noted that when the fixing member 210 is also elastic, those skilled in the art can appropriately adjust the relationship between the protruding length D1 of the bending section 2272 relative to the extending section 2271 and the minimum distance D2 between the first limiting surface 2271a and the second limiting surface 216 according to the elasticity of the fixing member 210; D1 can also be greater than D2 on the premise of ensuring that the clamping relationship between the guide member 220 and the fixing member 210 can be released.

[0069] Without departing from the inventive concept of the utility model, more than two snap structures 227 may be provided on the mounting member, and the fixing member 210 may be provided with the same number of snap holes 215 as the snap structures 227, and the guide member 220 is snapped onto the fixing member 210 through the multiple snap structures 227. The above scheme can further strengthen the connection between the guide member 220 and the fixing member 210. It should be noted that the second direction of each snap structure 227 may be different, but should be perpendicular to the first direction.

[0070] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. An endoscope guide structure, wherein the endoscope guide structure is used to install an instrument channel tube, wherein the instrument channel tube defines an instrument channel, and the instrument channel is used to allow surgical instruments to pass through, wherein: The endoscope guiding structure comprises: A fixing member, the fixing member having an instrument channel tube channel and a first positioning plane; the first positioning plane is located at one end of the instrument channel tube channel in the first direction, and the first positioning plane is perpendicular to the first direction; the instrument channel tube channel passes through the fixing member along the first direction and is used to accommodate the instrument channel tube; A guide member, wherein the guide member is detachably connected to the fixing member, and the guide member defines a guide channel; the guide channel is used for guiding surgical instruments and is connected to one side of the instrument channel tube in the first direction.

2. The endoscope guide structure according to claim 1, characterized in that: The instrument channel tube is divided into an instrument channel tube guide section and a channel section which are sequentially connected along the first direction; along the first direction, the cross-sectional area of ​​the inner wall of the instrument channel tube guide section perpendicular to the first direction gradually decreases to the same as the cross-sectional area of ​​the channel section.

3. The endoscope guide structure according to claim 1, characterized in that: The guide member has a second positioning plane, the second positioning plane is located at an end of the guide channel in the opposite direction of the first direction, and the second positioning plane abuts against the first positioning plane.

4. The endoscope guide structure according to claim 1, characterized in that: The guide member also has a guide hole, which is connected to the guide channel, and the guide channel is connected to the instrument channel tube channel through the guide hole; along the first direction, the projection of the inner wall of the guide hole is accommodated in the projection of the inner wall of the instrument channel tube channel.

5. The endoscope guide structure according to claim 4, characterized in that: The guide member includes a guide body and a guide wall, the guide body has the guide channel; the guide wall is connected to the side of the guide body opposite to the first direction, the guide wall has a second positioning plane and the guide hole, the second positioning plane is located at one end of the guide hole opposite to the first direction, and the second positioning plane abuts against the first positioning plane.

6. The endoscope guide structure according to claim 1, characterized in that: The guide member includes a guide body and a mounting portion, the guide body has the guide channel, and the mounting portion is connected to a side of the guide body opposite to the first direction; the fixing member has a receiving groove, the receiving groove is recessed in the opposite direction of the first direction and accommodates the mounting portion.

7. The endoscope guide structure according to claim 6, characterized in that: The mounting portion has a positioning groove extending along the first direction; the fixing member includes a positioning portion, which protrudes radially toward the instrument channel tube channel relative to the inner wall of the accommodating groove and extends along the first direction, and the positioning portion is accommodated in the positioning groove.

8. The endoscope guide structure according to claim 6, characterized in that: The guide member also includes a snap-fit ​​structure, which is elastic and includes an extension section and a bending section, wherein the extension section is connected to the side of the mounting portion opposite to the first direction, and the bending section is connected to the side of the extension section opposite to the first direction and is bent relative to the extension section; the fixing member also has a snap-fit ​​hole, which is connected to the side of the accommodating groove opposite to the first direction, and the bending section can pass through the snap-fit ​​hole and abut against the side of the fixing member opposite to the first direction.

9. The endoscope guide structure according to claim 8, characterized in that: The bending section is bent along a second direction relative to the extension section, and the second direction is perpendicular to the first direction; the extension section has a first limiting surface on the opposite side of the second direction, and the inner wall of the locking hole has a second limiting surface facing the second direction; along the second direction, the minimum spacing between the first limiting surface and the second limiting surface is greater than the protrusion length of the bending section relative to the extension section.

10. An endoscope, characterized in that include: The endoscope guide structure according to any one of claims 1 to 9; An instrument channel tube, wherein the instrument channel tube defines an instrument channel for passing surgical instruments, wherein the instrument channel tube has an input end and a working end along the length direction of the instrument channel tube, wherein the input end is accommodated in the instrument channel tube channel, and the working end is on one side of the instrument channel tube in the first direction relative to the input end; the instrument channel tube is connected to the fixing member, and the input end of the instrument channel tube is flush with the first positioning plane.

Images