Endoscope channel assembly and assembly method thereof

Abstract

The present application belongs to the field of medical device technology, and specifically relates to an endoscope channel assembly and an assembly method thereof. The assembly method of the endoscope channel assembly includes: inserting a mandrel at the junction of a multi-way structure and an instrument tube to make the junction of a first channel in the multi-way structure and a second channel in the instrument tube flat; fixing the multi-way structure and the instrument tube; and pulling the mandrel out of the multi-way structure and the instrument tube. When the endoscope channel assembly is assembled using the assembly method of the present application, a mandrel is inserted at the junction of the multi-way structure and the instrument tube. At this time, the mandrel is simultaneously inserted into the first channel of the multi-way structure and the second channel of the instrument tube, so that the junction of the first channel and the second channel is flat, so that a step can be prevented from forming at the junction of the first channel and the second channel. In this way, whether in the process of reverse threading of the guide wire or forward threading of the surgical instrument, the junction will not hinder it, so as to solve the problem of difficulty in reverse threading of the guide wire or difficulty in forward threading of the surgical instrument.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope channel assembly and an assembly method thereof. Background Art

[0002] An endoscope is a commonly used medical device. It is an inspection instrument that can directly enter the natural channels of the human body and provide doctors with sufficient diagnostic information to treat diseases. The endoscope includes an instrument tube that passes through the insertion part, and the proximal end of the instrument tube is connected to the multi-way structure on the operating handle.

[0003] Generally speaking, when using an endoscope, there is often an operation of inserting medical tools into a multi-channel structure. However, in practice, there is a problem that it is difficult to insert medical tools into a multi-channel structure. Summary of the invention

[0004] The purpose of the present application is to provide an endoscope channel assembly and an assembly method thereof, which can solve the current problem that it is difficult to insert medical tools into a multi-channel structure.

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

[0006] In a first aspect, the present application provides a method for assembling an endoscope channel assembly, comprising:

[0007] A mandrel is inserted into the junction of the multi-channel structure and the instrument tube to make the junction of the first channel in the multi-channel structure and the second channel in the instrument tube smooth;

[0008] Fix the multi-channel structure and the instrument tube;

[0009] Pull the mandrel out of the manifold and instrument tube.

[0010] In a second aspect, the present application provides an endoscope channel assembly, which is assembled using the above-mentioned assembly method.

[0011] The beneficial technical effects of this application are as follows:

[0012] When the assembly method of the present application is used to assemble an endoscope channel assembly, a core rod is inserted into the junction of the multi-channel structure and the instrument tube. At this time, the core rod is inserted into the first channel of the multi-channel structure and the second channel of the instrument tube at the same time. The core rod can make the first channel and the second channel tend to be coaxial, so that the first channel and the second channel have relatively good coaxiality, so that the junction of the first channel and the second channel is smooth, which can prevent the formation of steps at the junction of the first channel and the second channel. In this way, whether in the process of reverse threading of the guide wire or forward threading of the surgical instrument, the junction will not hinder it, so as to solve the problem of difficulty in reverse threading of the guide wire or difficulty in forward threading of the surgical instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the assembly method disclosed in the embodiment of the present application;

[0014] Figure 2 A schematic flow chart of an assembly method disclosed in another embodiment of the present application;

[0015] Figure 3 A schematic diagram of the structure of an endoscope channel assembly disclosed in an embodiment of the present application;

[0016] Figure 4 A cross-sectional view of an endoscope channel assembly disclosed in an embodiment of the present application;

[0017] Figure 5 For this application Figure 4 The enlarged schematic diagram of point A in the middle;

[0018] Figure 6 A cross-sectional view of the endoscope channel assembly and the mandrel after being matched according to the embodiment of the present application;

[0019] Figure 7 For this application Figure 6 A magnified schematic diagram of point B in the middle.

[0020] Description of reference numerals:

[0021] 100, multi-channel structure; 110, first channel; 111, first hole section; 120, first step hole; 200, instrument tube; 210, second channel; 211, second hole section; 300, core rod. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] The endoscope channel assembly and assembly method thereof provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0025] 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".

[0026] Current medical tools include guidewires and surgical instruments, and the insertion of medical tools includes the operation of reverse guidewire and forward surgical instrument. The reverse guidewire operation is to make the proximal end of the guidewire pass through the instrument tube and the multi-way structure in turn, and use the guidewire to insert the endoscope to the target position. The operation process of reverse guidewire is as follows: insert the hard endoscope into the human body; introduce the guidewire into the human body through the hard endoscope; withdraw the hard endoscope from the human body; directly introduce the endoscope into the human body through the guidewire, and in this process, there is the operation of reverse guidewire. Forward surgical instrument is to make the distal end of the surgical instrument pass through the multi-way structure and the instrument tube in turn, and use the surgical instrument to perform treatment operations.

[0027] The current multi-channel structure has a first channel and a step hole that are connected to each other. The step hole is located on the far side of the first channel. A second channel is formed in the instrument tube. The proximal end of the instrument tube can be inserted into the step hole to complete the docking between the instrument tube and the multi-channel structure. The instrument tube and the step hole have a gap fit, that is, there is a gap between the two after the instrument tube is inserted into the step hole, and the gap can accommodate glue, thereby fixing the instrument tube and the multi-channel structure.

[0028] The inventors further discovered that, because there is a gap between the instrument tube and the step hole, there is space in the step hole for the instrument tube to move radially, and there will be installation errors in the process of docking the instrument tube with the multi-way structure, which will cause the instrument tube to deviate from the preset position, resulting in poor coaxiality between the distal end of the multi-way structure and the proximal end of the instrument tube, so that the hole edge at the distal end of the first channel and the hole edge at the proximal end of the second channel are staggered to form a step at the junction between the two. In the process of inserting a guide wire or a surgical instrument, the guide wire or the surgical instrument is easily against the step, making it difficult to insert the guide wire backward or the surgical instrument forward.

[0029] like Figures 1 to 7 As shown, the embodiment of the present application discloses a method for assembling an endoscope channel assembly, comprising:

[0030] S100 , inserting a mandrel 300 into the joint between the multi-channel structure 100 and the instrument tube 200 , so as to make the joint between the first channel 110 in the multi-channel structure 100 and the second channel 210 in the instrument tube 200 smooth.

[0031] There are many ways to insert the mandrel 300 into the joint of the multi-channel structure 100 and the instrument tube 200. The first one is: first insert the distal end ( Figure 3 The first method is to insert the mandrel 300 into the multi-channel structure 100, and make the mandrel 300 pass through the position of the distal end of the multi-channel structure 100 that can be engaged with the instrument tube 200, and then sleeve the instrument tube 200 with the multi-channel structure 100, so that the mandrel 300 passes through the position of the instrument tube 200 that can be engaged with the multi-channel structure 100; the third method is to insert the mandrel 300 into the instrument tube 200, and make the mandrel 300 pass through the position of the proximal end of the instrument tube 200 that can be engaged with the multi-channel structure 100, and then sleeve the distal end of the multi-channel structure 100 with the proximal end of the instrument tube 200, so that the mandrel 300 passes through the position of the multi-channel structure 100 that can be engaged with the instrument tube 200. The present application does not limit the order of “inserting the mandrel 300 at the junction of the multi-channel structure 100 and the instrument tube 200 ”.

[0032] Optionally, the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200 may be connected in the following two ways. The first one is: Figures 4 to 5 , the proximal end of the instrument tube 200 is sleeved inside the distal end of the multi-channel structure 100, at which time the multi-channel structure 100 is provided with a first channel 110 and a first step hole 120 that are connected, the first step hole 120 is located on the distal side of the first channel 110, and the proximal end of the instrument tube 200 can be inserted into the first step hole 120 to dock with the multi-channel structure 100. The second is: the proximal end of the instrument tube 200 is sleeved outside the distal end of the multi-channel structure 100, at which time the instrument tube 200 is provided with a second channel 210 and a second step hole that are connected, the second step hole is located on the proximal side of the second channel 210, and the distal end of the multi-channel structure 100 can be inserted into the second step hole to dock with the instrument tube 200. This application does not limit the sleeve connection method between the multi-channel structure 100 and the instrument tube 200.

[0033] It should be noted that the smoothness of the junction between the first channel 110 in the multi-channel structure 100 and the second channel 210 in the instrument tube 200 refers to eliminating the step at the junction between the first channel 110 and the second channel 210. The present application also includes the following two situations in which the step at the junction is eliminated:

[0034] The first is that there is no manufacturing error between the core rod 300, the multi-channel structure 100 and the instrument tube 200. In this case, the core rod 300 can provide a common center point for the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200, ensuring the coaxiality between the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200, so that the orifice edge of the distal end of the first channel 110 is flush with the orifice edge of the proximal end of the second channel 210, that is, the orifice edge of the distal end of the first channel 110 coincides with the orifice edge of the proximal end of the second channel 210, preventing the problem of poor coaxiality between the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200 caused by installation errors, thereby preventing the formation of a step at the junction between the orifice edge at the distal end of the first channel 110 and the orifice edge at the proximal end of the second channel 210.

[0035] The second is that at least one of the mandrel 300, the multi-channel structure 100 and the instrument tube 200 has a manufacturing error, and the multi-channel structure 100 and the instrument tube 200 are fixed with glue. If the mandrel 300 has a manufacturing error, even if the mandrel 300 is inserted, the mandrel 300 cannot make the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200 completely coaxial, so that the orifice edge of the distal end of the first channel 110 cannot be flush with the orifice edge of the proximal end of the second channel 210; if at least one of the multi-channel structure 100 and the instrument tube 200 has a manufacturing error, that is, the sizes of the distal orifice of the first channel 110 and the proximal orifice of the second channel 210 are inconsistent, even if the mandrel 300 is inserted and the mandrel 300 makes the distal end of the multi-channel structure 100 and the proximal end of the instrument tube 200 coaxial, the orifice edge of the distal end of the first channel 110 cannot be flush with the orifice edge of the proximal end of the second channel 210. It can be seen that in the case of manufacturing errors, the edge of the hole at the distal end of the first channel 110 and the edge of the hole at the proximal end of the second channel 210 cannot be flush, and there is a step between the two. Since the instrument tube 200 and the multi-channel structure 100 are connected by glue, the glue can overflow from the joint between the instrument tube 200 and the multi-channel structure 100 to flow to the inner wall of the first channel 110 or the inner wall of the second channel 210. In this way, when the mandrel 300 is inserted into the joint of the first channel 110 and the second channel 210, the mandrel 300 can spread the glue so that the glue fills the step at the joint. Since the mandrel 300 drives the glue to move when spreading the glue, this can prevent the glue from forming a new step at the step, but instead forms a structure similar to a guide ramp at the step, thereby making the joint smooth.

[0036] S200 , fixing the multi-channel structure 100 and the instrument tube 200 .

[0037] S300 , pulling the mandrel 300 out of the multi-channel structure 100 and the instrument tube 200 .

[0038] When the endoscope channel assembly is assembled using the assembly method of the present application, a core rod 300 is inserted into the junction of the multi-channel structure 100 and the instrument tube 200. At this time, the core rod 300 is simultaneously inserted into the first channel 110 of the multi-channel structure 100 and the second channel 210 of the instrument tube 200. The core rod 300 can make the first channel 110 and the second channel 210 tend to be coaxial, so that the first channel 110 and the second channel 210 have relatively good coaxiality, so that the junction of the first channel 110 and the second channel 210 is smooth, which can prevent the formation of steps at the junction of the first channel 110 and the second channel 210. In this way, whether in the process of reverse threading of the guide wire or forward threading of the surgical instrument, the junction will not hinder it, so as to solve the problem of difficulty in reverse threading of the guide wire or difficulty in forward threading of the surgical instrument.

[0039] It should be noted that the mandrel 300 includes a matching section, and in the extension direction of the matching section, the outer dimensions (such as diameter) of the matching section remain unchanged, and the orifice edge of the distal end of the first channel 110 and the orifice edge of the proximal end of the second channel 210 are respectively sleeved on the matching section. The present application does not limit the outer shape of other parts of the mandrel 300 except the matching section, as long as the mandrel 300 can be inserted into the multi-pass structure 100.

[0040] Optionally, the multi-channel structure 100 is provided with an instrument port and a suction port, both of which are connected to the first channel 110 in the multi-channel structure 100. The surgical instrument can be inserted into the multi-channel connector through the instrument port, 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, and the mandrel 300 can be inserted into the multi-channel structure 100 from the instrument port. The suction port here can be connected to a negative pressure source, and 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 here can be connected to the suction valve on the endoscope operating handle. Furthermore, the multi-channel structure 100 is also provided with an injection port, and a syringe can be used to inject physiological saline or liquid medicine into the human body through the injection port to achieve the purpose of cleaning or treatment.

[0041] In an optional embodiment, the step of inserting the mandrel 300 at the junction of the multi-channel structure 100 and the instrument tube 200 includes:

[0042] S110 , sleeve the proximal end of the instrument tube 200 with the distal end of the multi-channel structure 100 .

[0043] Here, the proximal end of the instrument tube 200 can be sleeved outside the distal end of the multi-channel structure 100 , or the proximal end of the instrument tube 200 can be sleeved inside the distal end of the multi-channel structure 100 .

[0044] S120 , inserting the mandrel 300 from the multi-pass structure 100 until the insertion end of the mandrel 300 extends into the second channel 210 .

[0045] In this embodiment, the instrument tube 200 is first sleeved with the multi-channel structure 100, and then the mandrel 300 is inserted from the multi-channel structure 100. That is to say, before the instrument tube 200 is sleeved with the multi-channel structure 100, the mandrel 300 is not inserted into the multi-channel structure 100 or the instrument tube 200, and the step hole of the multi-channel structure 100 and the instrument tube 200 that is sleeved outside one of them is not occupied by the mandrel 300. At this time, there is still a large space in the step hole. In this way, in the process of inserting the one of the multi-channel structure 100 and the instrument tube 200 that is not provided with a step hole into the step hole, the one that is not provided with a step hole will not be blocked by the mandrel 300 and can be easily inserted into the step hole. Furthermore, when this embodiment is combined with the embodiment of "including S600 before step S110", the outer peripheral surface of one of the multi-channel structure 100 and the instrument tube 200 that is not provided with a step hole is coated with glue. Since the one of the multi-channel structure 100 and the instrument tube 200 that is not provided with a step hole is easy to be inserted into the step hole, this can prevent the one without a step hole from scratching the orifice of the step hole of the other, thereby preventing the glue on the one without a step hole from being scraped to the orifice of the step hole and reducing the amount of glue between the multi-channel structure 100 and the instrument tube 200.

[0046] Taking the example of the proximal end of the instrument tube 200 being sleeved inside the distal end of the multi-channel structure 100, before the instrument tube 200 is sleeved inside the multi-channel structure 100, the mandrel 300 is not inserted into the multi-channel structure 100, so the first step hole 120 of the multi-channel structure 100 is not occupied by the mandrel 300, and there is a large space inside the first step hole 120, so that when the instrument tube 200 is inserted into the first step hole 120, it will not be blocked by the mandrel 300, so it is easy to insert the mandrel 300 into the first step hole 120. And after the glue is applied to the outer peripheral surface of the instrument tube 200, when the instrument tube 200 is inserted into the first step hole 120, it can also prevent the instrument tube 200 from scratching the opening of the first step hole 120 and reduce the amount of glue between the multi-channel structure 100 and the instrument tube 200.

[0047] In step S120, during the process of inserting the mandrel 300 from the multi-channel structure 100 and extending the insertion end of the mandrel 300 into the second channel 210, the instrument tube 200 needs to be held, so that when the mandrel 300 passes through the second channel 210, a force can be applied to the instrument tube 200 in the direction extending from the instrument tube 200 to the multi-channel structure 100, thereby preventing the instrument tube 200 from being disengaged from the multi-channel structure 100. If only the instrument tube 200 is held, in the case where the force applied by the mandrel 300 to the instrument tube 200 is too large, the mandrel 300 may drive the instrument tube 200 away from the multi-channel structure 100. Since the hand only holds the instrument tube 200, the hand will move away from the multi-channel structure 100 synchronously with the instrument tube 200, and the instrument tube 200 will not move relative to the multi-channel structure 200, and the hand will not have a sense of touch, so it is not easy to judge whether the instrument tube 200 has moved.

[0048] In an optional embodiment, in step S120, the step of inserting the mandrel 300 from the multi-pass structure 100 is specifically as follows:

[0049] The multi-channel structure 100 and the instrument tube 200 are held simultaneously, and the mandrel 300 is inserted through the multi-channel structure 100 .

[0050] In this embodiment, before inserting the mandrel 300 from the multi-channel structure 100, the multi-channel structure 100 and the instrument tube 200 are held at the same time, so that when the mandrel 300 passes through the second channel 210, a force can be applied to the instrument tube 200 in the direction extending from the instrument tube 200 to the multi-channel structure 100, thereby preventing the instrument tube 200 from being disengaged from the multi-channel structure 100; and because the multi-channel structure 100 is also held while holding the instrument tube 200, even if the instrument tube 200 moves, the hand will not move relative to the multi-channel structure 100. At this time, if the mandrel 300 drives the instrument tube 200 to move, the instrument tube 200 will move relative to the hand, thereby giving the hand a sense of touch to determine whether the instrument tube 200 has moved. Compared with the method of observing with the eyes, the present embodiment is more accurate in determining whether the instrument tube 200 has moved by means of touch.

[0051] In an optional embodiment, the assembly method further comprises:

[0052] S400 , determining whether the instrument tube 200 and the multi-channel structure 100 are disengaged.

[0053] Here, the above embodiment can be used to determine whether the instrument tube 200 and the multi-channel structure 100 are disengaged by touch, or by visual observation.

[0054] S500 , if yes, push the instrument tube 200 to move toward the multi-channel structure 100 , so that the instrument tube 200 is engaged with the multi-channel structure 100 .

[0055] After determining that the instrument tube 200 is disengaged from the multi-channel structure 100, this embodiment pushes the instrument tube 200 to reengage with the multi-channel structure 100, thereby preventing the hole edge at the proximal end of the instrument tube 200 and the hole edge at the distal end of the multi-channel structure 100 from being separated, thereby preventing an annular groove from being generated between the instrument tube 200 and the multi-channel structure 100, so as to prevent the inner wall of the annular groove from obstructing the guide wire and the surgical instrument during the process of reverse threading of the guide wire and forward threading of the surgical instrument.

[0056] In an optional embodiment, before step S110, the following steps are further included:

[0057] S600 , coating glue on the outer circumference of the other of the instrument tube 200 and the multi-channel structure 100 that can be sleeved inside one of them.

[0058] Taking the case where the instrument tube 200 is sleeved in the multi-channel structure 100 as an example, step S600 is: coating the outer circumference of the instrument tube 200 with glue. In this way, when the instrument tube 200 is inserted into the first step hole 120 of the multi-channel structure 100, even if the instrument tube 200 scrapes the inner wall of the first step hole 120, the inner wall of the first step hole 120 will scrape the glue on the outer circumference of the instrument tube 200 to the outside of the first step hole 120, and will not scrape the glue on the outer circumference of the instrument tube 200 to the inside of the first step hole 120, so that the glue accumulates in front of the instrument tube 200, which can prevent the glue from entering the second channel 210 of the instrument tube 200 when the instrument tube 200 is further inserted into the first step hole 120, thereby preventing the glue from solidifying and forming a boss or other structure in the second channel 210 of the instrument tube 200 to hinder the insertion of the medical device.

[0059] Taking the case where the instrument tube 200 is sleeved outside the multi-channel structure 100 as an example, step S600 is: coating the outer peripheral surface of the multi-channel structure 100 with glue. In this way, when the multi-channel structure 100 is inserted into the second step hole of the instrument tube 200, the glue can be prevented from entering the first channel 110 of the multi-channel structure 100, thereby preventing the glue from solidifying and forming a boss or other structure in the first channel 110 to hinder the insertion of the medical instrument.

[0060] Of course, step S600 can also be: coating glue on the inner circumference of the other of the instrument tube 200 and the multi-channel structure 100 that can be sleeved outside one of them, and this application is not limited to this. Taking the instrument tube 200 sleeved inside the multi-channel structure 100 as an example, step S600 is: coating glue on the inner circumference of the first step hole 120 of the multi-channel structure 100; taking the instrument tube 200 sleeved outside the multi-channel structure 100 as an example, step S600 is: coating glue on the inner circumference of the second step hole of the instrument tube 200.

[0061] Step S200 is specifically as follows:

[0062] The glue between the instrument tube 200 and the multi-channel structure 100 is solidified through a curing process.

[0063] The curing process here can be an ultraviolet irradiation process to cure the photosensitive adhesive; or the fixing process can also be a static process to allow the adhesive to cure naturally by statically standing.

[0064] In another optional embodiment, step S600 may not be included before step S110, and step S200 may specifically be to fix the instrument tube 200 and the multi-channel structure 100 by means of heat fusion welding or ultrasonic welding. The present application does not limit the fixing method between the instrument tube 200 and the multi-channel structure 100.

[0065] In an optional embodiment, step S110 is specifically:

[0066] The proximal end of the instrument tube 200 is sleeved with the distal end of the multi-channel structure 100, and during the sleeved process, the instrument tube 200 and the multi-channel structure 100 are controlled to rotate relative to each other. Optionally, during the sleeved process, one of the instrument tube 200 and the multi-channel structure 100 may be rotated alone to cause the instrument tube 200 and the multi-channel structure 100 to rotate relative to each other; or the instrument tube 200 and the multi-channel structure 100 may be rotated simultaneously to cause the two to rotate relative to each other.

[0067] Since the gap between the instrument tube 200 and the multi-channel structure 100 is very small, the instrument tube 200 may come into contact with the multi-channel structure 100 during the sleeve connection process, thereby generating friction between the two. Therefore, in the present embodiment, the instrument tube 200 and the multi-channel structure 100 are controlled to rotate relative to each other during the sleeve connection process, which can convert the friction generated between the two into rolling friction, and the rolling friction is less than the sliding friction. Therefore, the method of the present embodiment makes it easier to complete the sleeve connection between the instrument tube 200 and the multi-channel structure 100. Of course, in the process of sleeve connection between the instrument tube 200 and the multi-channel structure 100, the two can also rotate relative to each other, and the present application does not limit this.

[0068] In addition, when the present embodiment is combined with the technical solution of "including S600 before step S110", before the instrument tube 200 and the multi-channel structure 100 are sleeved, the outer peripheral surface of the other one of the instrument tube 200 and the multi-channel structure 100 that can be sleeved inside one of them is coated with glue. If the glue is unevenly coated on the outer peripheral surface of the above-mentioned one, the instrument tube 200 and the multi-channel structure 100 can be controlled to rotate to spread the glue evenly, so that the glue is more evenly distributed in the gap between the instrument tube 200 and the multi-channel structure 100, thereby preventing the generation of blank areas, making the instrument tube 200 and the multi-channel structure 100 more firmly bonded, and preventing the two from detaching.

[0069] In an optional embodiment, step S110 is specifically:

[0070] The proximal end of the instrument tube 200 is sleeved into the distal end of the multi-channel structure 100 .

[0071] Before step S110, the method further includes:

[0072] S700 , pressing the proximal end of the instrument tube 200 to cause the proximal end of the instrument tube 200 to be concave and deformed.

[0073] Since the gap between the instrument tube 200 and the multi-channel structure 100 is very small, the instrument tube 200 may contact the multi-channel structure 100 during the process of sleeve-fitting the instrument tube 200 and the multi-channel structure 100, thereby generating friction between the two, which is not conducive to inserting the instrument tube 200 into the multi-channel structure 100. Therefore, in this embodiment, before inserting the instrument tube 200 into the first channel 110 of the multi-channel structure 100, the proximal end of the instrument tube 200 is pressed to cause the proximal end of the instrument tube 200 to be concave and deformed, which can reduce the cross-sectional area of ​​the instrument tube 200, that is, reduce the outer dimensions of the instrument tube 200, thereby increasing the gap between the instrument tube 200 and the multi-channel structure 100, reducing the risk of contact between the two, and thus facilitating the insertion of the instrument tube 200 into the multi-channel structure 100. Of course, S700 may not be included before step S110, and this application is not limited to this.

[0074] In the previous embodiment, before the instrument tube 200 is inserted into the multi-channel structure 100, the proximal end of the instrument tube 200 is concavely deformed. Since the instrument tube 200 has a certain plasticity and insufficient resilience, the instrument tube 200 may still be in a concavely deformed state after docking with the multi-channel structure 100, which may hinder the insertion of the core rod 300.

[0075] In order to solve the above problem, in an optional embodiment, the insertion end of the core rod 300 is provided with a tapered guide surface.

[0076] In this embodiment, the insertion end of the mandrel 300 is provided with a tapered guide surface, and the tapered guide surface gradually expands in the direction extending from the insertion end of the mandrel 300 to the other end, that is, the distal end of the guide surface is a small head end, and the proximal end of the guide surface is a large head end. When the mandrel 300 extends into the second channel 210 of the instrument tube 200, the small head end of the guide surface will first enter the second channel 210. The size of the small head end of the guide surface is small, so even if the instrument tube 200 is still in a concave and deformed state, In this state, the mandrel 300 can also easily enter the second channel 210; and as the mandrel 300 further extends into the second channel 210, the larger size of the guide surface will gradually enter the second channel 210 and squeeze the concave part of the instrument tube 200, so that the concave part of the instrument tube 200 expands outward, so that the instrument tube 200 recovers its deformation, that is, it no longer maintains the concave state, that is, the concave guide surface can shape the concave part of the instrument tube 200 to restore it to a flat state. Of course, the insertion end of the mandrel 300 may not be provided with a conical guide surface, and this application does not limit this.

[0077] In an optional embodiment, the first hole channel 110 includes a first hole segment 111 close to the hole edge of the distal end thereof, and the second hole channel 210 includes a second hole segment 211 close to the hole edge of the proximal end thereof, and the first hole segment 111 and the second hole segment 211 are both equal-diameter hole segments, and the diameter of the first hole segment 111 is the same as the diameter of the second hole segment 211. It should be noted that the junction of the first hole segment 111 and the second hole segment 211 is the junction of the first hole channel 110 and the second hole channel 210.

[0078] A core rod 300 is inserted into the joint of the multi-channel structure 100 and the instrument tube 200. The core rod 300 will penetrate into the first hole segment 111 and the second hole segment 211, and make the joint of the first hole segment 111 and the second hole segment 211 smooth. Therefore, the size of the core rod 300 matches the size of the hole edge of the first hole segment 111 and the hole edge of the second hole segment 211. In this embodiment, the first hole segment 111 and the second hole segment 211 are set as equal-diameter hole segments. Therefore, the size of all parts of the first hole segment 111 matches the size of the core rod 300, and the size of all parts of the second hole segment 211 matches the size of the core rod 300. In this way, when the core rod 300 penetrates into the first hole segment 111 and the second hole segment 211, it will contact the inner wall of the first hole segment 111 and the inner wall of the second hole segment 211, thereby limiting the position of the core rod 300 to better smooth the joint. Of course, the first hole segment 111 and the second hole segment 211 may also be deformed hole segments, and the present application is not limited to this.

[0079] And / or, in an optional embodiment, the first channel 110 includes a first hole section 111 near the hole edge of the distal end thereof, and the multi-channel structure 100 includes a transparent portion, and the transparent portion is formed with the first hole section 111. When this embodiment is combined with the embodiment of "the proximal end of the instrument tube 200 is sleeved inside the distal end of the multi-channel structure 100", the first hole section 111 is formed in the transparent portion of the multi-channel structure 100, so that it is convenient to observe through the transparent portion whether the mandrel 300 passes through the junction of the multi-channel structure 100 and the instrument tube 200, so as to confirm the insertion position of the mandrel 300.

[0080] The embodiment of the present application also discloses an endoscope channel assembly, which is assembled by the assembly method described in any of the above embodiments. The endoscope channel assembly referred to in the embodiment of the present application is a channel assembly applied to an endoscope, and the endoscope can 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 embodiment of the present application does not specifically limit the type of endoscope.

[0081] 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 method for assembling an endoscope channel assembly, characterized in that: include: A mandrel (300) is inserted into the joint of the multi-channel structure (100) and the instrument tube (200) to make the joint of the first hole (110) in the multi-channel structure (100) and the second hole (210) in the instrument tube (200) smooth; Fixing the multi-channel structure (100) and the instrument tube (200); Pulling the mandrel (300) out of the multi-channel structure (100) and the instrument tube (200); The first hole channel (110) comprises a first hole segment (111) close to the hole edge of the distal end thereof, and the second hole channel (210) comprises a second hole segment (211) close to the hole edge of the proximal end thereof, the first hole segment (111) and the second hole segment (211) are both equal diameter hole segments, and the diameter of the first hole segment (111) is the same as the diameter of the second hole segment (211); And / or, the first hole channel (110) comprises a first hole segment (111) close to the hole edge of the distal end thereof, and the multi-channel structure (100) comprises a transparent portion, in which the first hole segment (111) is formed.

2. The assembly method according to claim 1, characterized in that: The step of inserting the mandrel (300) into the joint of the multi-channel structure (100) and the instrument tube (200) comprises: Sleeving the proximal end of the instrument tube (200) with the distal end of the multi-channel structure (100); The core rod (300) is inserted from the multi-pass structure (100) until the insertion end of the core rod (300) extends into the second channel (210).

3. The assembly method according to claim 2, characterized in that: The step of inserting the mandrel (300) from the multi-pass structure (100) is specifically as follows: The multi-channel structure (100) and the instrument tube (200) are held simultaneously, and the core rod (300) is inserted through the multi-channel structure (100).

4. The assembly method according to claim 2, characterized in that: The assembly method further comprises: determining whether the instrument tube (200) and the multi-channel structure (100) are disengaged; If so, the instrument tube (200) is pushed to move in a direction close to the multi-channel structure (100), so that the instrument tube (200) is engaged with the multi-channel structure (100).

5. The assembly method according to claim 2, characterized in that: Before the step of sleeve-connecting the proximal end of the instrument tube (200) with the distal end of the multi-channel structure (100), the step further includes: Coating glue on the outer peripheral surface of the other of the instrument tube (200) and the multi-channel structure (100) that can be sleeved inside one of them; The step of fixing the multi-channel structure (100) and the instrument tube (200) is specifically as follows: The glue between the instrument tube (200) and the multi-channel structure (100) is solidified through a solidification process.

6. The assembly method according to any one of claims 2 to 5, characterized in that: The step of sleeve-connecting the proximal end of the instrument tube (200) with the distal end of the multi-channel structure (100) is specifically as follows: The proximal end of the instrument tube (200) is sleeved with the distal end of the multi-channel structure (100), and during the sleeved process, the instrument tube (200) and the multi-channel structure (100) are controlled to rotate relative to each other.

7. The assembly method according to any one of claims 2 to 5, characterized in that: The step of sleeve-connecting the proximal end of the instrument tube (200) with the distal end of the multi-channel structure (100) is specifically as follows: Sleeving the proximal end of the instrument tube (200) into the distal end of the multi-channel structure (100); Before the step of sleeve-connecting the proximal end of the instrument tube (200) with the distal end of the multi-channel structure (100), the step further includes: The proximal end of the instrument tube (200) is pressed, causing the proximal end of the instrument tube (200) to be concave and deformed.

8. The assembly method according to claim 7, characterized in that: The insertion end of the core rod (300) is provided with a conical guide surface.

9. An endoscope channel assembly, characterized in that: The method is assembled by using the assembly method as claimed in any one of claims 1 to 8.

Images