A tee structure and endoscope

Abstract

The embodiment of the application provides a three-way structure and an endoscope, and relates to the technical field of endoscopes. The three-way structure comprises an inlet section, an outlet section, a transition section, a first circular arc section and a second circular arc section. The transition section is connected between the inlet section and the outlet section. The interior of the inlet section, the outlet section and the transition section is in communication and forms an internal channel. The first circular arc section is connected between the inlet section and the transition section. The first circular arc section is located at the top of the internal channel. The second circular arc section is connected between the outlet section and the transition section. The second circular arc section is located at the top of the internal channel. The embodiment of the application can reduce the resistance suffered by a treatment instrument during the process of passing through the three-way structure, so that the treatment instrument can smoothly pass through the three-way structure, thereby reducing the operation difficulty.

Description

Technical Field

[0001] This application relates to the field of endoscope technology, and more particularly to a three-way structure and an endoscope. Background Technology

[0002] The operating section is the central control area within the endoscope, through which doctors can perform various procedures. The operating section typically includes a three-way connector, through which medical instruments can reach the lesion for treatment. After treatment, a suction device can also use this three-way connector to remove blood and fluid from the lesion. Therefore, the three-way connector must include at least an instrument inlet, an instrument outlet, and a suction port.

[0003] Generally speaking, to facilitate the doctor's operation, the instrument inlet is usually facing the doctor, while the instrument outlet is roughly horizontal. When the treatment instrument is inserted, it will deform at a large angle in the three-way structure, making it difficult for the treatment instrument to pass through the three-way structure smoothly, which will have a certain impact on the doctor's operation. Utility Model Content

[0004] This application provides a three-way structure and an endoscope, which can reduce the resistance encountered by the treatment instrument when passing through the three-way structure, so that the treatment instrument can pass through the three-way structure smoothly, thereby reducing the difficulty of operation.

[0005] The first aspect of this application provides a tee structure, including:

[0006] An inlet section is provided at an angle to the horizontal direction, and the port of the inlet section forms an instrument inlet.

[0007] An outlet section, wherein the outlet section is arranged horizontally, and the port of the outlet section forms an instrument outlet;

[0008] A transition section is provided, which connects the inlet section and the outlet section. The inlet section, the outlet section, and the transition section are internally interconnected and form an internal channel.

[0009] A first arc segment connects the entrance segment and the transition segment, and the first arc segment is located at the top of the internal channel;

[0010] And a second arc segment, connecting the outlet segment and the transition segment, the second arc segment being located at the top of the internal channel.

[0011] According to the three-way structure described in the first aspect of this application, since the three-way structure has a first arc segment between the inlet section and the transition section and a second arc segment between the outlet section and the transition section, when the treatment device passes through the three-way structure, the treatment device will preferentially act on the first arc segment and begin to deform under the action of the first arc segment, and this deformation can proceed smoothly. Subsequently, as the treatment device gradually penetrates deeper, the bottom surface of the internal channel will contact the end of the treatment device, so that the treatment device will gradually deform under the combined action of the bottom surface and the first arc segment, and the deformation process is a linear change. Finally, when the degree of deformation of the treatment device is sufficient for the treatment device to contact the second arc segment, the second arc segment will connect the bottom surface and the first arc segment to cause the treatment device to undergo the final stage of deformation, so that the end of the treatment device can face the device outlet, and finally the treatment device passes through the three-way structure smoothly. The structural design of the three-way structure in this embodiment of the application makes the deformation process of the treatment device linear and allows it to deform smoothly, thereby reducing the resistance encountered by the treatment device when passing through the three-way structure, allowing the treatment device to pass through the three-way structure smoothly, and thus reducing the difficulty of operation.

[0012] In one possible implementation, the first arc segment is formed at one end of the inlet segment near the transition segment, or the first arc segment is formed at one end of the transition segment near the inlet segment, or the first arc segment is formed jointly at one end of the transition segment near the inlet segment and the first arc segment near the transition segment.

[0013] In one possible implementation, the end of the outlet section near the transition section forms the second arc segment, or the end of the transition section near the outlet section forms the second arc segment, or the end of the transition section near the outlet section and the end of the outlet section near the transition section together form the second arc segment.

[0014] In one possible implementation, the radius of curvature of the first arc segment is smaller than the radius of curvature of the second arc segment.

[0015] In one possible implementation, the inner diameter of the internal channel first increases and then decreases in the direction from the inlet section to the outlet section.

[0016] In one possible implementation, the inlet segment is detachably connected to the transition segment, and / or the outlet segment is detachably connected to the transition segment.

[0017] In one possible implementation, the first arc segment has a first arc notch away from the internal channel, and the second arc segment has a second arc notch away from the internal channel, wherein the diameter of the first arc notch is larger than the diameter of the second arc notch.

[0018] In one possible implementation, a section of the outlet segment adjacent to the instrument outlet is provided with a chamfered surface.

[0019] In one possible implementation, the three-way structure further includes an attraction section, the port of which forms an attraction port, the attraction section being located on the same side as the inlet section, and the interior of the attraction section having an attraction channel communicating with the internal channel.

[0020] In one possible implementation, the inner wall of the suction channel has an inclined guide surface, which is located close to the suction port and is set at an angle to the horizontal direction.

[0021] In one possible implementation, the area of ​​the guiding surface is S1, and the cross-sectional area of ​​the attraction channel is S2, wherein S1 and S2 satisfy the following relationship:

[0022] S1≥1 / 4S2.

[0023] A second aspect of this application provides an endoscope including the three-way structure described in the first aspect, disposed in the operating section of the endoscope, wherein the inlet section is used to connect to the instrument channel assembly in the operating section, and the outlet section is connected to the insertion section.

[0024] In one possible implementation, the three-way structure further includes a suction section for connecting to a suction channel assembly in the operating unit, the suction channel assembly having a cleaning brush inlet. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 A schematic diagram of the structure of an endoscope provided according to an embodiment of this application is shown;

[0027] Figure 2 This diagram illustrates the connection between a three-way structure and an instrument channel assembly and a suction channel assembly according to an embodiment of this application.

[0028] Figure 3 A cross-sectional view of a three-way structure and instrument channel assembly and a suction channel assembly provided according to an embodiment of this application is shown;

[0029] Figure 4 This diagram illustrates a variation of a three-way valve structure in a therapeutic device provided according to an embodiment of this application.

[0030] Figure 5 This diagram illustrates another angle of connection between a three-way structure and an instrument channel assembly and a suction channel assembly provided according to an embodiment of this application.

[0031] Figure label:

[0032] 100 - Entrance section; 101 - Instrument entrance;

[0033] 200 - Exit section; 201 - Equipment exit; 210 - Chamfered surface;

[0034] 300 - Transition section;

[0035] 400 - First arc segment; 401 - First arc notch;

[0036] 500 - Second arc segment; 501 - Second arc notch;

[0037] 600 - Suction section; 601 - Suction port; 602 - Suction channel; 603 - Guide surface;

[0038] 10-Internal passage; 11-Bottom surface;

[0039] 20 - Instrument channel assembly; 21 - Instrument channel;

[0040] 30 - Suction channel assembly; 31 - Cleaning brush channel;

[0041] 1000 - Therapeutic devices;

[0042] 2000-Main Unit;

[0043] 3000 - Light guide section;

[0044] 4000 - Operating unit; 4100 - Three-way structure;

[0045] 5000 - Insertion section;

[0046] 6000 - Lens body;

[0047] 7000 - Lens Interface Device;

[0048] 1-Endoscope.

[0049] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] An endoscope is a mechanical device with an image sensor, optical lens, and optical illumination. It allows for the observation, diagnosis, and treatment of organs such as the intestines and stomach. To assist the optical lens in capturing images, endoscopes typically also have interfaces for supplying water, air, or a mixture of both, as well as suction interfaces for drawing water or air. In short, an endoscope is a structure that integrates multiple functions.

[0052] The operating section is the central control area of ​​the endoscope. When the endoscope detects lesions that require treatment or removal, the doctor can use this section to perform the necessary procedures. For example, in a colonoscopy where polyps are found in the intestines, the doctor can use the operating section to bring the instruments to the lesion site and remove the polyps. After removal, the doctor can also use the operating section to clean away any blood or fluid from the lesion.

[0053] To achieve the above operations, the operating section is typically equipped with a three-way valve. Treatment instruments can reach the lesion through this valve for treatment, and after treatment, a suction device can also use this valve to remove blood and fluids from the lesion. Therefore, the three-way valve must include at least an instrument inlet, an instrument outlet, and a suction port.

[0054] Generally, three-way connectors are ergonomically designed to facilitate operation and reduce doctor fatigue. However, in these connectors, the instrument inlet faces the doctor, while the outlet is roughly horizontal, with the inlet and outlet at approximately a 45° angle. This causes the instrument to deform significantly within the connector when inserted, making it difficult for the device to pass smoothly and impacting the doctor's operation.

[0055] To guide the therapeutic device smoothly through the three-way structure, the technical solution adopted in the relevant technology is to form a guide step on the inner bottom surface of the three-way structure. When the therapeutic device enters the three-way structure from the device inlet, the head end of the therapeutic device will act on the guide step. Under the reaction force of the head end, the therapeutic device can deform and extend out of the three-way structure from the device outlet.

[0056] In the above method, the deformation of the treatment device occurs on the inner bottom surface of the T-junction structure. The guide step exerts a significant reaction force on the treatment device, requiring a single angle change, which makes it difficult for the treatment device to pass smoothly through the T-junction structure. Furthermore, the need to install the guide step on the inner bottom surface of the T-junction structure increases the manufacturing difficulty of the T-junction structure.

[0057] Based on the above situation and problems, this application provides a three-way structure. This three-way structure can change the position where the treatment device deforms and reduce the angle change when the three-way structure deforms, thereby reducing the resistance encountered by the treatment device when passing through the three-way structure, so that the treatment device can pass through the three-way structure smoothly, thereby reducing the difficulty of operation.

[0058] Therefore, the three-way structure in this embodiment is a three-section structure, which may include an inlet section, a transition section, and an outlet section. The port of the inlet section forms the instrument inlet, the port of the outlet section forms the instrument outlet, and the transition section connects the inlet section and the outlet section. For the three-way structure as a whole, the turning points within the three-way structure are located at the top. That is, for the internal channel of the three-way structure, the inlet section and the transition section are connected by a first arc segment, which is located above the internal channel. Similarly, the outlet section and the transition section are connected by a second arc segment, which is also located above the internal channel. As the therapeutic instrument gradually penetrates, the first arc segment can act on the therapeutic instrument before the bottom surface of the internal channel, causing the therapeutic instrument to gradually deform under the combined action of the first arc segment, the bottom surface, and the second arc segment. This effectively controls the amount of deformation of the therapeutic instrument, making it easier for the therapeutic instrument to pass through the three-way structure.

[0059] Based on the above three-way structure, this application embodiment also provides an operating part, which may include a housing, and the above three-way structure may be fixedly disposed within the housing. Furthermore, the operating part may also include structures such as an instrument channel assembly and a suction channel assembly. The instrument channel is connected to the instrument inlet of the three-way structure, allowing a treatment instrument to extend into the three-way structure from the instrument channel assembly. The suction channel assembly is connected to the suction port of the three-way structure, allowing a cleaning brush to enter the three-way structure from the suction channel assembly when the lesion needs to be cleaned.

[0060] The aforementioned instrument channel assembly and suction channel assembly can be configured with reference to relevant technologies, and will not be described in detail in this application.

[0061] Figure 1 A schematic diagram of the structure of an endoscope 1 provided according to an embodiment of this application is shown.

[0062] Please refer to Figure 1This application also provides an endoscope 1, which may include the operation unit 4000 described above. Other structural parts of the endoscope 1 may be configured with reference to related technologies, and will not be described in detail in this application.

[0063] In some embodiments, the endoscope may include a main unit 2000, a light guide 3000, an operation unit 4000, an insertion unit 5000, and a scope body 6000. The light guide 3000, operation unit 4000, and insertion unit 5000 may form a scope body interface device 7000, which is connected between the main unit 2000 and the scope body 6000. The aforementioned three-way structure may be disposed in the operation unit 4000, and the scope body 6000 may be disposed at the tip of the insertion unit 5000.

[0064] The light guide 3000 can be plugged into the main unit 2000, while the insertion part 5000 can be inserted into the cavity of the corresponding organ in the human body. The main unit 2000 is usually equipped with an image processor, a light source assembly, and an air pump, while the light guide 3000 is usually equipped with an imaging fiber optic assembly, a light guide assembly, and the aforementioned interfaces, and the lens body 6000 is equipped with an optical lens and other structures.

[0065] When the endoscope 1 is working, the light source component in the main unit 2000 can transmit the light source to the endoscope 6000 through the endoscope interface device 7000, and the air pump and other components in the main unit 2000 can introduce gas into the endoscope 6000 through the endoscope interface device 7000.

[0066] The specific structures of the host 2000, the lens interface device 2000, and the lens 3000 can be referred to in relevant technologies, and this application does not limit them.

[0067] In this embodiment of the application, a three-way structure 4100 is disposed in the operating part 4000 of the endoscope. The inlet section 100 of the three-way structure 4100 is used to connect to the instrument channel assembly 20 in the operating part 4000, and the outlet section 200 of the three-way structure 4100 is connected to the insertion part.

[0068] It is understood that the aforementioned instrument channel assembly 20 has an instrument channel 21 (see reference). Figure 3 Furthermore, the instrument channel assembly 20 is also equipped with a cover plate or a solenoid valve or other structural components that can control the opening or closing of the instrument channel 21. When it is necessary to insert the treatment instrument 1000, the instrument channel 21 can be opened by moving the cover plate or controlling the solenoid valve. This allows the treatment instrument 1000 to enter the internal channel 10 of the three-way structure 4100 from the instrument channel 21, and then pass through the insertion part to reach the lesion, thereby realizing the cutting or treatment of the lesion by the treatment instrument 1000.

[0069] In some embodiments, the three-way structure 4100 may further include a suction section 600 for connecting to the suction channel assembly 30 in the operation unit 4000, the suction channel assembly 30 having a cleaning brush inlet.

[0070] It is understood that the aforementioned suction channel assembly 30 has a cleaning brush channel 31 (see reference). Figure 3 After the treatment or cutting of the lesion is completed, the cleaning brush can be inserted into the cleaning brush channel 31 and the cleaning brush can reach the lesion after passing through the internal channel 10, so that the lesion can be cleaned.

[0071] Figure 2 This diagram illustrates the connection between a three-way structure 4100 and an instrument channel assembly 20 and a suction channel assembly 30 according to an embodiment of this application. Figure 3 A cross-sectional view of a three-way structure 4100, an instrument channel assembly 20, and a suction channel assembly 30 provided according to an embodiment of this application is shown. Figure 4 A schematic diagram showing the variation of a therapeutic device 1000 in a three-way structure 4100 according to an embodiment of this application is shown.

[0072] In the embodiments of this application, please refer to Figure 2 and Figure 3 The three-way structure 4100 includes an inlet section 100, an outlet section 200, a transition section 300, a first arc section 400, and a second arc section 500.

[0073] The inlet section 100 is set at an angle to the horizontal direction, and the port of the inlet section 100 forms the instrument inlet 101.

[0074] During normal use, the port of the inlet section 100 faces the operator, which facilitates the operator to perform related operations. Therefore, it can be understood that the angle between the inlet section 100 and the horizontal direction is an angle description of the operating unit 4000 under normal use.

[0075] As mentioned above, the angle between the inlet section 100 and the horizontal direction can be 45°. Of course, in other cases, the angle can be greater than or less than 45°.

[0076] The outlet section 200 is set in a horizontal direction, and the port of the outlet section 200 forms the instrument outlet 201.

[0077] The exit section 200 is set horizontally, which is the attitude description of the exit section 200 under normal use conditions of the operating unit 4000.

[0078] The transition section 300 is connected between the inlet section 100 and the outlet section 200. The inlet section 100, the outlet section 200 and the transition section 300 are internally connected and form an internal channel 10.

[0079] For the treatment device 1000, it can enter the internal channel 10 from the device inlet 101 of the inlet section 100 and extend out of the internal channel 10 from the device outlet 201 of the outlet section 200. During this process, the treatment device 1000 will undergo an angle change, which will restrict the treatment device 1000 from passing smoothly through the internal channel 10. Based on this, the embodiment of this application also provides a first arc segment 400 and a second arc segment 500.

[0080] The first arc segment 400 connects the entrance segment 100 and the transition segment 300, and the first arc segment 400 is located at the top of the internal channel 10.

[0081] You can refer to the following: Figure 4 The first arc segment 400 allows the inflection point between the entrance segment 100 and the transition segment 300 to be smoother. As the treatment device 1000 passes through the three-way structure 4100, the first arc segment 400 can preferentially contact the treatment device 1000, allowing the treatment device 1000 to deform at the first arc segment 400. The deformation can proceed smoothly. After deformation, as the treatment device 1000 continues to penetrate deeper, it then contacts the bottom surface 11 of the internal channel 10. Subsequently, as the treatment device 1000 penetrates further, it will continue to deform under the action of the bottom surface 11 and the first arc segment 400.

[0082] The second arc segment 500 connects the outlet segment 200 and the transition segment 300, and the second arc segment 500 is located at the top of the inner channel 10.

[0083] The design of the second arc segment 500 allows for a smoother inflection point between the exit segment 200 and the transition segment 300. (Refer to the previous description.) Figure 4 When the treatment device 1000 is about to pass through the three-way structure 4100, the treatment device 1000 has undergone a large degree of deformation under the action of the first arc segment 400 and the bottom surface 11. At this time, the treatment device 1000 will act on the second arc segment 500. After the action of the second arc segment 500, the treatment device 1000 will continue to deform until the end of the treatment device 1000 can face the device outlet 201.

[0084] Therefore, under the action of the first arc segment 400, the second arc segment 500 and the bottom surface 11, the treatment device 1000 will first contact the first arc segment 400 and begin to deform. After that, the treatment device 1000 will gradually deform as the treatment device 1000 penetrates deeper. The deformation of the treatment device 1000 is a linear process, which can avoid the treatment device 1000 from passing smoothly through the three-way structure 4100 due to excessive angle change at one time.

[0085] It is understandable that the angle change of the treatment device 1000 can be controlled by reasonably configuring the dimensions of the first arc segment 400, the second arc segment 500, and the transition segment 300.

[0086] It should be understood that in the above description, the inlet section 100, outlet section 200, transition section 300, first arc section 400, and second arc section 500 only represent different parts of the tee structure 4100. This is for the purpose of describing the function of different parts and the overall function of the tee structure 4100 in detail, and does not mean that the tee structure 4100 comprises five independent parts. It is understood that in some embodiments, the tee structure 4100 can be designed as a single unit; for example, the tee structure 4100 can be formed by integral casting. In other embodiments, the tee structure 4100 may also include five independent components, which correspond to the inlet section 100, outlet section 200, transition section 300, first arc section 400, and second arc section 500, respectively. These five independent components can be manufactured separately and then connected together by mechanical connection or other means.

[0087] Furthermore, in this embodiment, all or at least part of the inlet section 100, outlet section 200, transition section 300, first arc section 400, and second arc section 500 can be made of metallic materials, thereby improving the structural strength of the tee structure 4100. To facilitate the passage of the treatment device 1000 through the tee structure 4100, the inner surface of the tee structure 4100 can be treated with an appropriate surface treatment process to make its surface sufficiently smooth.

[0088] In this embodiment, because the three-way structure 4100 has a first arc segment 400 between the inlet section 100 and the transition section 300 and a second arc segment 500 between the outlet section 200 and the transition section 300, when the treatment device 1000 passes through the three-way structure 4100, the treatment device 1000 will preferentially act on the first arc segment 400 and begin to deform under the action of the first arc segment 400, and this deformation can proceed smoothly. Subsequently, as the treatment device 1000 gradually penetrates deeper, the bottom surface 11 of the internal channel 10 will contact the treatment device 10. At the end of the device 1000, the treatment device 1000 gradually deforms under the combined action of the bottom surface 11 and the first arc segment 400. The deformation process is linear. Finally, when the deformation of the treatment device 1000 is sufficient to allow it to contact the second arc segment 500, the second arc segment 500 connects the bottom surface 11 and the first arc segment 400, causing the treatment device 1000 to undergo a final stage of deformation. This allows the end of the treatment device 1000 to face the device outlet 201, ultimately allowing the treatment device 1000 to pass smoothly through the three-way structure 4100. The structural design of the three-way structure 4100 in this embodiment ensures that the deformation process of the treatment device 1000 is linear and can deform smoothly. This reduces the resistance encountered by the treatment device 1000 when passing through the three-way structure 4100, allowing the treatment device 1000 to pass smoothly through the three-way structure 4100, thereby reducing the difficulty of operation.

[0089] On the other hand, the bottom surface 11 of the internal channel 10 serves to guide the movement of the treatment device 1000 in the internal channel 10. Therefore, the bottom surface 11 of the internal channel 10 can be designed as a plane, which simplifies the internal structure of the three-way structure 4100 and reduces the manufacturing difficulty of the three-way structure 4100.

[0090] To form the first arc segment 400 and the second arc segment 500, the tee structure 4100 can be designed in various ways.

[0091] For example, in some embodiments, a first arc segment 400 is formed at one end of the inlet segment 100 near the transition segment 300. In this case, the first arc segment 400 is formed by the inlet segment 100 and is a part of the inlet segment 100.

[0092] For example, in some embodiments, a first arc segment 400 is formed at one end of the transition segment 300 near the entrance segment 100. In this case, the first arc segment 400 is formed by the transition segment 300 and is a part of the transition segment 300.

[0093] For example, in some embodiments, the end of the transition segment 300 near the entrance segment 100 and the end of the entrance segment 100 near the transition segment 300 together form the first arc segment 400. In this case, the first arc segment 400 is formed by the entrance segment 100 and the transition segment 300.

[0094] For example, in some embodiments, a second arc segment 500 is formed at one end of the outlet segment 200 near the transition segment 300. In this case, the second arc segment 500 is formed by the outlet segment 200 and is a part of the outlet segment 200.

[0095] For example, in some embodiments, a second arc segment 500 is formed at one end of the transition segment 300 near the exit segment 200. In this case, the second arc segment 500 is formed by the transition segment 300 and is a part of the transition segment 300.

[0096] For example, in some embodiments, the end of the transition section 300 near the outlet section 200 and the end of the outlet section 200 near the transition section 300 together form the second arc segment 500. In this case, the second arc segment 500 is formed by the outlet section 200 and the transition section 300.

[0097] In some embodiments, please refer to Figure 3 and Figure 4 The radius of curvature of the first arc segment 400 is smaller than the radius of curvature of the second arc segment 500.

[0098] Based on the aforementioned deformation process of the treatment device 1000, it is known that the treatment device 1000 will first contact the first arc segment 400, then the bottom surface 11, and finally the second arc segment 500. Therefore, by setting the radius of curvature of the first arc segment 400 to be smaller than that of the second arc segment 500, the degree of deformation of the treatment device 1000 after passing through the first arc segment 400 can be increased, making the subsequent deformation process of the treatment device 1000 easier and reducing the deformation of the treatment device 1000 at the second arc segment 500. Thus, by setting the radius of curvature, the ratio of the degree of deformation of the treatment device 1000 can be reasonably configured, allowing the treatment device 1000 to pass through the three-way structure 4100 more smoothly.

[0099] In some embodiments, the inner diameter of the internal channel 10 first increases and then decreases from the inlet section 100 to the outlet section 200.

[0100] The aforementioned change in the inner diameter of the internal channel 10 allows it to have a structure that is generally wide in the middle and narrow at both ends. The internal channel 10 can be roughly divided into two sections. The inner diameter of one section gradually increases, which can accommodate the initial insertion of the treatment device 1000, giving the treatment device 1000 a larger deformation space in the initial stage. This configuration can accommodate the design of the first arc segment 400 with a small radius of curvature. The inner diameter of the other section gradually decreases, which can accommodate the subsequent insertion of the treatment device 1000, compressing the deformation space of the treatment device 1000 in the later stage. This configuration can accommodate the design of the second arc segment 500 with a large radius of curvature, allowing the treatment device 1000 to extend smoothly from the device outlet 201.

[0101] In some embodiments, in conjunction with the foregoing, when the five components of the tee structure 4100 are designed independently, the inlet section 100 can be detachably connected to the transition section 300, and the outlet section 200 can also be detachably connected to the transition section 300.

[0102] Therefore, it can be understood that when different instrument channel components 20, suction channel components 30, and treatment instruments 1000 need to be used, different inlet sections 100, outlet sections 200, and transition sections 300 can be replaced so that different treatment instruments 1000 can pass smoothly through the three-way structure 4100. In addition, the above-mentioned detachable design also facilitates the maintenance of relevant components.

[0103] Figure 5 This diagram shows a connection diagram from another angle between a three-way structure 4100 and an instrument channel assembly 20 and a suction channel assembly 30 provided according to an embodiment of this application.

[0104] In some embodiments, please refer to Figures 3 to 5 The first arc segment 400 is provided with a first arc notch 401 away from the internal channel 10, and the second arc segment 500 is provided with a second arc notch 501 away from the internal channel 10.

[0105] By setting a first arc notch 401 on the first arc segment 400 and a second arc notch 501 on the second arc segment 500, the deformation space of the treatment device 1000 can be expanded, thereby reducing the deformation rate of the treatment device 1000 and improving the smoothness of the treatment device 1000 passing through the three-way structure 4100.

[0106] Furthermore, due to the setting of the first arc notch 401 and the second arc notch 501, the length of the transition section 300 can be compressed, which shortens the friction stroke between the treatment device 1000 and the transition section 300, further reducing the resistance of the treatment device 1000 in the process of passing through the three-way structure 4100, making it easier for the treatment device 1000 to pass through the three-way structure 4100.

[0107] In some embodiments, please refer to Figure 3 and Figure 4 The section of the outlet section 200 adjacent to the instrument outlet 201 is provided with a chamfered surface 210. The chamfered surface 210 can correct the orientation of the treatment instrument 1000 in the final stage, so that the treatment instrument 1000 can extend out of the instrument outlet 201 in the correct posture.

[0108] In some embodiments, please refer to Figure 3 and Figure 4 The three-way structure 4100 also includes an attraction section 600, the port of which forms an attraction port 601. The attraction section 600 and the inlet section 100 are located on the same side. The attraction section 600 has an attraction channel 602 inside, which is connected to the internal channel 10.

[0109] The suction section 600 is designed to create a suction channel 602 in the path of the internal channel 10, making it easier to clean the lesion, such as by drawing out blood from the lesion.

[0110] In this application, by placing the suction section 600 and the inlet section 100 on the same side, the layout of the three-way structure 4100 in the operation unit 4000 can be simplified, so as to facilitate the layout of the instrument channel assembly 20 and the suction channel assembly 30 in the operation unit 4000.

[0111] In some embodiments, please refer to Figure 3 and Figure 4 The inner wall of the suction channel 602 has an inclined guide surface 603, which is located near the suction port 601 and is set at an angle to the horizontal direction.

[0112] The guide surface 603 is configured such that when the cleaning brush is withdrawn, it can act on the guide surface 603, making it easier for the cleaning brush to detach from the suction channel 602.

[0113] The included angle can be set according to actual needs. For example, in some embodiments, the included angle can be 70° to 75°.

[0114] In some specific embodiments, the area of ​​the guide surface 603 is S1, and the cross-sectional area of ​​the attraction channel 602 is S2. S1 and S2 satisfy the relationship: S1≥1 / 4S2.

[0115] By configuring the area as described above, the cleaning brush can be prevented from getting stuck on the guide surface 603 and its surroundings, making it easier for the cleaning brush to be drawn out of the channel 602.

[0116] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 this application and simplifying the description, and do not 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 this application.

[0117] In the description of this application, it should be understood that the terms "comprising" and "having" and any variations thereof used in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0118] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A three-way structure, characterized in that, include: An inlet section is provided at an angle to the horizontal direction, and the port of the inlet section forms an instrument inlet. An outlet section, wherein the outlet section is arranged horizontally, and the port of the outlet section forms an instrument outlet; A transition section is provided, which connects the inlet section and the outlet section. The inlet section, the outlet section, and the transition section are internally interconnected and form an internal channel. A first arc segment connects the entrance segment and the transition segment, and the first arc segment is located at the top of the internal channel; And a second arc segment, connecting the outlet segment and the transition segment, the second arc segment being located at the top of the internal channel.

2. The tee structure according to claim 1, characterized in that, The first arc segment is formed at one end of the inlet segment near the transition segment, or the first arc segment is formed at one end of the transition segment near the inlet segment, or the first arc segment is formed by the end of the transition segment near the inlet segment and the end of the inlet segment near the transition segment together.

3. The tee structure according to claim 1, characterized in that, The second arc segment is formed at one end of the outlet section near the transition section, or the second arc segment is formed at one end of the transition section near the outlet section, or the second arc segment is formed together at one end of the transition section near the outlet section and the second arc segment near the transition section of the outlet section.

4. The tee structure according to claim 1, characterized in that, The radius of curvature of the first arc segment is smaller than the radius of curvature of the second arc segment.

5. The tee structure according to claim 1, characterized in that, The inner diameter of the internal channel first increases and then decreases from the inlet section to the outlet section.

6. The tee structure according to claim 1, characterized in that, The inlet section is detachably connected to the transition section, and / or the outlet section is detachably connected to the transition section.

7. The tee structure according to claim 1, characterized in that, The first arc segment has a first arc notch away from the internal channel, and the second arc segment has a second arc notch away from the internal channel. The diameter of the first arc notch is larger than the diameter of the second arc notch.

8. The tee structure according to claim 1, characterized in that, The section of the outlet segment adjacent to the instrument outlet is provided with a chamfered surface.

9. The tee structure according to any one of claims 1 to 8, characterized in that, The three-way structure also includes an attraction section, the port of which forms an attraction port. The attraction section and the inlet section are located on the same side. The attraction section has an attraction channel inside, and the attraction channel is connected to the internal channel.

10. The tee structure according to claim 9, characterized in that, The inner wall of the suction channel has an inclined guide surface, which is located close to the suction port and is set at an angle to the horizontal direction.

11. The tee structure according to claim 10, characterized in that, The area of ​​the guiding surface is S1, and the cross-sectional area of ​​the attraction channel is S2. S1 and S2 satisfy the following relationship: S1≥1 / 4S2.

12. An endoscope, characterized in that, The endoscope includes a three-way structure as described in any one of claims 1-11, disposed in the operating section of the endoscope, wherein the inlet section is used to connect to the instrument channel assembly in the operating section, and the outlet section is connected to the insertion section.

13. The endoscope according to claim 12, characterized in that, The three-way structure also includes a suction section for connecting to a suction channel assembly in the operating unit, the suction channel assembly having a cleaning brush inlet.

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