Endoscope tip and endoscope

Abstract

The embodiment of the utility model provides an endoscope tip part and an endoscope. The endoscope comprises a head end cover, an imaging module and an instrument tube, the imaging module comprises a lens and an image sensor, the image sensor is located on the image side of the lens, and the instrument tube and the imaging module are arranged in a spaced mode; the head end cover comprises a first end and a second end, the imaging module is contained in the head end cover, the lens corresponds to the light hole of the first end, one end of the instrument tube is located in the head end cover and communicated with the mounting hole of the first end, and the other end of the instrument tube extends out of the second end; the first end and the second end are the two ends of the periphery of the head end cover, the periphery of the head end cover comprises a notch, at least part of the imaging module embedding notch and / or at least part of the instrument tube embedding notch, the space at the notch can be used for containing the imaging module or the instrument tube, and the utilization rate of the space occupied by the head end cover is increased; the compactness degree of arrangement of structural parts in the tip part of the endoscope is improved, and miniaturization of the tip part of the endoscope is facilitated.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an endoscope tip and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device whose tip can be inserted into locations inaccessible to visual inspection, such as body cavities, to assist doctors in observing and diagnosing diseases. The tip of an endoscope may include a head cap, a lens mounted within the head cap, an image sensor, a flexible printed circuit board (FPC), and an instrument tube. The lens, image sensor, and FPC work together to capture images within the body cavity, while the instrument tube provides a passage for therapeutic instruments.

[0003] When the size of the image sensor is larger, the more pixels it contains, the higher the image clarity will be, allowing doctors to observe smaller lesions in the body cavity; when the diameter of the instrument tube is larger, more sizes and models of therapeutic instruments can be allowed to pass through; but when the size of components such as the image sensor or the instrument tube is larger, the size of the tip will also be larger, making it difficult for the tip to pass through the smaller channels in the body cavity, limiting the range of the endoscope in the body cavity and affecting the patient's comfort.

[0004] How to reduce the size of the tip while ensuring the working performance of the endoscope is an urgent problem to be solved. Utility Model Content

[0005] The embodiments of the present application provide an endoscope tip portion and an endoscope, which can achieve miniaturization of the tip portion while ensuring the working performance of the endoscope.

[0006] In a first aspect, the present application provides an endoscope tip. The endoscope tip includes a head cover, an imaging module, and an instrument tube. The imaging module includes a lens and an image sensor, the image sensor being located on the image side of the lens. The imaging module is used to capture images on the object side of the lens. The instrument tube is spaced apart from the imaging module and is used to provide a passage for therapeutic instruments. The head cover includes a first end and a second end that are oppositely disposed. The imaging module is housed within the head cover, and the lens is disposed corresponding to the light-transmitting hole at the first end. One end of the instrument tube is located within the head cover and communicates with the mounting hole at the first end, and the other end of the instrument tube extends out of the second end. The first and second ends are two ends of a peripheral portion of the head cover. The peripheral portion of the head cover includes a notch, and at least a portion of the imaging module and / or at least a portion of the instrument tube are embedded in the notch.

[0007] In a possible implementation, the notch extends to the second end.

[0008] In one possible implementation, when at least a portion of the imaging module is embedded in the notch, a portion of the circumferential side surface of the imaging module embedded in the notch is flush with the outer surface of the peripheral portion of the head end cover, and / or, when at least a portion of the instrument tube is embedded in the notch, a portion of the circumferential side surface of the instrument tube embedded in the notch is flush with the outer surface of the peripheral portion of the head end cover.

[0009] In a possible implementation, when at least a portion of the imaging module is embedded in the notch, a portion of the image sensor is embedded in the notch, and / or a portion of the lens mount is embedded in the notch.

[0010] In a possible implementation, the image sensor is embedded in the lens holder, and a portion of the image sensor protrudes relative to a peripheral side surface of the lens holder.

[0011] In one possible implementation, the distal end of the endoscope includes a shading member, which is located on the surface of the image sensor exposed relative to the lens base, and / or the shading member is located between the lens base and the image sensor, and is used to block light that has not passed through the lens from entering the image sensor.

[0012] In a possible implementation, the image sensor has an N-gonal structure, where N is an integer greater than or equal to 3, and at least two corners of the image sensor are embedded in the notch.

[0013] In a possible implementation, the distal end portion of the endoscope includes a sealing member, and the sealing member at least covers the notch.

[0014] In a possible implementation, the sealing member is glue or a thermoplastic film with biocompatibility.

[0015] In one possible implementation, the instrument tube includes a first tube body, a second tube body, and a third tube body that are connected in sequence, the first tube body is closer to the first end than the second tube body, the second tube body is bent toward the lens relative to the first tube body, and the extension direction of the first tube body is parallel to the extension direction of the third tube body.

[0016] In one possible implementation, the distal end of the endoscope includes a light-emitting element and a foldable flexible circuit board, the flexible circuit board includes a first surface and a second surface arranged opposite to each other, the light-emitting element is connected to the first surface, the image sensor is connected to the second surface, and the light-emitting element is closer to the first end relative to the image sensor.

[0017] In a possible implementation, the light emitting element is fixed to the lens, and a surface of the light emitting element facing away from the image sensor abuts against an inner wall of the end cap.

[0018] In a second aspect, embodiments of the present application provide another endoscope tip portion, the endoscope tip portion comprising a head cap, an imaging module, and an instrument tube, the imaging module comprising a lens and an image sensor, the image sensor being located on the image side of the lens, the imaging module being configured to capture an image on the object side of the lens, the instrument tube being spaced apart from the imaging module, and being configured to provide a passage for a therapeutic instrument to pass through;

[0019] The head cover includes a first end and a second end that are oppositely disposed. The imaging module is housed in the head cover, and the lens is disposed corresponding to the light-transmitting hole at the first end. One end of the instrument tube is located in the head cover and communicates with the mounting hole at the first end, and the other end of the instrument tube extends out of the second end.

[0020] The first end and the second end are two ends of the periphery of the head end cover. The periphery of the head end cover includes a first part and a second part, and the second part is made of a flexible material.

[0021] In a third aspect, an embodiment of the present application provides an endoscope, comprising an endoscope tip portion, a flexible tube, a handle, a drive member, and a traction wire according to any of the above implementations, wherein the endoscope tip portion further comprises a snake bone, the two ends of the snake bone being fixedly connected to the head end cap and the flexible tube, respectively, and the snake bone communicating with the head end cap and the flexible tube, the lens and the image sensor being located on a side of the snake bone facing away from the flexible tube, and the instrument tube being passed through the head end cap, the snake bone, and the flexible tube;

[0022] The end of the flexible tube facing away from the head cover is connected to and communicated with the handle, the driving member is installed on the handle, the traction wire is passed through the snake bone, the flexible tube and the handle, and the traction wire is fixedly connected between the end of the snake bone closer to the head cover and the driving member. The driving member is used to relax or tighten the traction wire to drive the snake bone to bend, thereby changing the position of the tip of the endoscope.

[0023] The embodiment of the present application provides a notch on the periphery of the head end cover, and at least part of the instrument tube and / or at least part of the imaging module can be installed in the notch, thereby utilizing the wall thickness of the head end cover (the space at the notch), improving the utilization rate of the space occupied by the head end cover, and also improving the compactness of the arrangement of the head end cover, the imaging module and the instrument tube, which is conducive to miniaturizing the radial dimensions of the distal end of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following is an introduction to the drawings used in the embodiments of this application.

[0025] Figure 1 This is a schematic structural diagram of an endoscope provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 The illustrated diagram is a partial structural diagram of an endoscope in some embodiments;

[0027] Figure 3 yes Figure 1 A schematic diagram of a portion of the structure of the distal end portion of the endoscope shown;

[0028] Figure 4 yes Figure 3 The schematic diagram of the structure of the endoscope tip portion shown in another perspective;

[0029] Figure 5 yes Figure 4 The schematic diagram of the structure of the partial structure of the distal end portion of the endoscope in some embodiments is shown;

[0030] Figure 6 yes Figure 5 The schematic diagram of the cross-sectional structure of the head end cover at AA is shown;

[0031] Figure 7 yes Figure 3 A schematic structural diagram of a portion of the structure of the distal end portion of the endoscope shown;

[0032] Figure 8 yes Figure 7 The schematic diagram of the cross-sectional structure of the endoscope tip portion at position BB is shown;

[0033] Figure 9 yes Figure 7 A schematic structural diagram of a portion of the structure of the distal end portion of the endoscope shown;

[0034] Figure 10 yes Figure 9 The schematic diagram of the structure of the endoscope tip portion shown in FIG.

[0035] Figure 11 yes Figure 7 Schematic diagram of the exploded structure of a portion of the endoscope tip portion in some embodiments;

[0036] Figure 12 yes Figure 9 A schematic diagram of a portion of the structure of the endoscope tip after the flexible circuit board is unfolded;

[0037] Figure 13 yes Figure 12 A schematic diagram showing a partial structure of the distal end portion of the endoscope after the flexible printed circuit board is unfolded from another perspective;

[0038] Figure 14 yes Figure 4 The schematic diagram of the cross-sectional structure of the distal end portion of the endoscope at CC is shown;

[0039] Figure 15 yes Figure 2 The diagram shows the structure of the snake bone from another perspective. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, "connected" can mean detachably connected or non-detachably connected; it can mean directly connected or indirectly connected through an intermediary. "Multiple" means at least two.

[0042] The directional terms mentioned in the embodiments of the present application, such as "upper", "inner", "outer", "side", etc., are only references to the directions in the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying 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 embodiments of the present application.

[0043] In the embodiments of the present application, the limitations of relative positional relationships, such as parallel, perpendicular, and flush, are mentioned. These limitations are all based on the current state of the art, and are not absolutely strict limitations. A small amount of deviation is allowed, and approximately parallel, approximately perpendicular, approximately flush, etc. are all acceptable. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0044] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0045] The side where the scene to be imaged is located is called the object side, with the lens as the boundary.

[0046] The side where the image of the scene to be imaged is located is called the image side, with the lens as the boundary.

[0047] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of an endoscope 1000 provided in an embodiment of the present application. Figure 2 yes Figure 1 The endoscope 1000 shown is a schematic diagram of a portion of the structure in some embodiments.

[0048] In some embodiments, an endoscope 1000 may include an insertion tube 100 and a handle 200. One end of the insertion tube 100 is inserted into the handle 200 and communicates with the interior space of the handle 200. The endoscope 1000 can be used for visual inspection of inaccessible locations, such as body cavities. When the endoscope 1000 is in use, the handle 200 faces the operator, who can hold the handle 200. The insertion tube 100 is located on the side of the handle 200 facing away from the operator and can be inserted into the patient's body.

[0049] For example, the handle 200 can be a hollow structure, and a communication port 2001 can be provided on the handle 200 for connecting the internal space of the handle 200 with the external space of the handle 200, providing a channel for connecting and communicating with the outside world for the structural components in the internal space of the handle 200 or the structural components connected to the internal space of the handle 200. For example, one end of the insertion tube 100 can be inserted into one of the communication ports 2001, and the insertion tube 100 and the structural components therein can be connected to the internal space of the handle 200 through the communication port 2001, and connected to the external space of the handle 200 through another communication port 2001, so as to connect with the structural components in the external space of the handle 200 (such as a display device or a drive member 400, etc.). It is understandable that the number of communication ports 2001 can be one, two, three, or more, and this embodiment of the application is not limited to this.

[0050] It is understood that for the sake of convenience in the following description, in the embodiments of the present application, the definition Figure 1 The extending direction of the endoscope 1000 is the first direction X. When describing the endoscope 1000 and its components and structures in the embodiment of the present application, the directional terms such as "far" and "near" are used to refer to the positive direction of the first direction X (such as Figure 1 The direction indicated by the arrow in the middle is "far," and the negative direction toward the first direction X is "near." That is, the direction toward the operator when the endoscope 1000 is used is near, and the direction away from the operator is far. In other words, the proximal end of the insertion tube 100 can be inserted into the handle 200, and the distal end of the insertion tube 100 can be used to extend into the patient's body.

[0051] Understandably, Figure 1 and Figure 2 The shapes, sizes, and connection relationships of the handle 200, insertion tube 100, and other structural components of the endoscope 1000 shown in the related drawings are only schematic representations. In other embodiments, they can be adjusted as needed, and this application does not limit this.

[0052] Please refer to Figures 1 to 5 , Figure 3 yes Figure 1 The schematic diagram of the partial structure of the endoscope tip 10 shown in FIG. Figure 4yes Figure 3 The schematic diagram of the structure of the endoscope tip 10 shown in FIG. Figure 5 yes Figure 4 The illustrated diagram is a schematic diagram of the exploded structure of a portion of the endoscope distal end 10 in some embodiments.

[0053] In some embodiments, the insertion tube 100 may include an endoscope tip 10, which may include a head cap 11, an imaging module 12, and an instrument tube 13. The imaging module 12 may include a lens 121, an image sensor 122, and an FPC (not shown). The image sensor 122 is located on the image side of the lens 121, and the lens 121 is closer to the proximal end of the endoscope 1000 than the image sensor 122. The instrument tube 13 and the imaging module 12 are spaced apart. One end of the instrument tube 13 (the distal end of the instrument tube 13) and the imaging module 12 are both housed in the head cap 11, and the other end of the instrument tube 13 (the proximal end of the instrument tube 13) can extend out of the head cap 11. The endoscope tip 10 is the portion of the insertion tube 100 closer to the distal end of the endoscope 1000, i.e., the portion of the insertion tube 100 that is first inserted into the human body.

[0054] Among them, the imaging module 12 can be used to capture images on the object side of the lens 121. For example, when the endoscope tip 10 is inserted into a patient's body cavity, the lens 121 can be used to capture ambient light within the body cavity. The image sensor 122, also known as a photosensitive chip or photosensitive element, can be used to convert the image information carried by the ambient light captured by the lens 121 into an electrical signal. By transmitting this electrical signal to a display device capable of displaying images, the image of the body cavity captured by the imaging module 12 can be reproduced. In addition, the more pixels contained in the image sensor 122, the higher the clarity of the image captured by the imaging module 12, which is more conducive to the operator's observation of smaller lesions in the body cavity.

[0055] Exemplarily, the image sensor 122 may be a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge-coupled Device). The image sensor 122 may also be other image control devices suitable for use in the endoscope 1000, and the embodiments of the present application do not limit this.

[0056] Among them, the instrument tube 13 can provide a passage for therapeutic instruments used for sampling and operation, such as high-frequency electric knives, forceps, biopsy forceps, cell brushes or angiography catheters. The larger the diameter of the instrument tube 13, the more conducive it is to allow more models and sizes of therapeutic instruments to pass through the instrument tube 13 into the patient's body cavity, thereby improving the flexibility and diversity of treatment and reducing treatment costs. The embodiment of the present application does not limit the therapeutic instruments passing through the instrument tube 13.

[0057] Please refer to Figures 3 to 6 , Figure 6 yes Figure 5 The cross-sectional structural diagram of the head end cover 11 at AA is shown.

[0058] In some embodiments, the head cover 11 may include a first end 11a and a second end 11b that are oppositely disposed in its extension direction (ie, in the first direction X), and the first end 11a of the head cover 11 may be provided with a cover plate 111 (eg, Figure 4 As shown), the second end 11b of the head cover 11 is provided with an opening 112 (as shown Figure 6 As shown), the head end cover 11 may further include a peripheral portion 113, the first end 11a and the second end 11b may be the two ends of the peripheral portion 113, the peripheral portion 113 may surround the cover plate 111, and the peripheral portion 113, the cover plate 111 and the opening 112 of the second end 11b of the head end cover 11 may jointly enclose a receiving cavity 11c of the head end cover 11. Wherein, when the endoscope 1000 is in use, the first end 11a of the head end cover 11 is closer to the distal end of the endoscope 1000, and the second end 11b of the head end cover 11 is closer to the proximal end of the endoscope 1000. In an embodiment of the present application, the head end cover 11 may be a semi-closed cylindrical structure, the receiving cavity 11c may be used to accommodate the distal end of the imaging module 12 and the instrument tube 13, and the proximal end of the instrument tube 13 may extend out of the opening 112 at the second end 11b of the head end cover 11, so that the instrument tube 13 can be connected with other structural parts (such as Figure 1 The handle 200 shown is connected.

[0059] In addition, the outer surface of the peripheral portion 113 can be a curved surface, which is beneficial for improving the smoothness of the outer surface of the endoscope tip 10 and preventing the patient from feeling a strong foreign body sensation or being scratched when the outer surface has sharp corners during entry into the patient's body cavity. In other embodiments, the shape of the head cover 11 can also be set as needed. For example, the head cover 11 can also be approximately in the shape of a square column, etc., which is not limited in this embodiment of the present application. The head cover 11 can be made of materials such as plastic and rubber, which is not limited in this embodiment of the present application.

[0060] For example, the cover plate 111 (eg Figure 4As shown) may include a first plate 1111 and a second plate 1112, the first plate 1111 may be provided with a light-transmitting hole 1111a, the light-transmitting hole 1111a may pass through the first plate 1111 in the first direction X, the second plate 1112 may be provided with a mounting hole 1112a, the mounting hole 1112a may pass through the second plate 1112 in the first direction X, and the second plate 1112 may be inclined relative to the first plate 1111 toward the proximal end of the head cover 11, and the head cover 11 may further include a partition 114 (as shown) Figure 6 As shown), the partition 114 is located in the accommodating cavity 11c, and the partition 114 can be connected between the first plate body 1111 and the second plate body 1112, and is perpendicular to the first plate body 1111, and is used to divide the accommodating cavity 11c of the head end cover 11 into a first chamber and a second chamber. The first chamber can correspond to the space surrounded by the first plate body 1111, part of the periphery 113 and the partition 114, and the second chamber can correspond to the space surrounded by the second plate body 1112, another part of the periphery 113 and the partition 114.

[0061] Among them, the light-transmitting hole 1111a can connect the first chamber with the external space of the first end 11a of the head end cover 11, the imaging module 12 can be accommodated in the first chamber, and the lens 121 of the imaging module 12 is arranged corresponding to the light-transmitting hole 1111a to collect the image of the external space of the first end 11a of the head end cover 11 (for example, the patient's body cavity) through the light-transmitting hole 1111a, the mounting hole 1112a can connect the second chamber with the external space of the first end 11a of the head end cover 11, the distal end of the instrument tube 13 is accommodated in the second chamber and connected to the mounting hole 1112a, and the instrument tube 13 can be connected to the external space of the first end 11a of the head end cover 11 (that is, the patient's body cavity) through the mounting hole 1112a, so that the treatment instrument can be extended into the body cavity for treatment, sampling and other operations.

[0062] In the embodiment of the present application, the partition 114 is provided to divide the accommodating chamber 11c into a first chamber and a second chamber, which helps to simplify the assembly difficulty of the endoscope tip 10, and can also improve the accuracy of the installation position of the imaging module 12 and the instrument tube 13. It can also avoid the imaging module 12 and the instrument tube 13 and other structural components installed on the head cover 11 from shifting or interfering with each other when the head cover 11 moves, thereby affecting the service life of the endoscope tip 10. In other embodiments, the accommodating chamber 11c may also include a third chamber, a fourth chamber, or more chambers, or the head cover 11 may not include the partition 114, that is, the accommodating chamber 11c is a single chamber, not including the first chamber and the second chamber. The embodiment of the present application is not limited to this.

[0063] Furthermore, the second plate 1112 is tilted relative to the first plate 1111 toward the proximal end of the tip cap 11. The distal end of the imaging module 12 and the distal end of the instrument tube 13 can be located at opposite ends of the mounting hole 1112a in the first direction X. That is, in the first direction X, the distal end of the imaging module 12 can be staggered with the distal end of the instrument tube 13. By tilting the second plate 1112 relative to the first plate 1111 toward the proximal end of the tip cap 11, the diameter of the tip cap 11 gradually increases toward its proximal end, thereby reducing patient discomfort during insertion of the endoscope tip 10 into the patient's body. Furthermore, the staggered arrangement of the imaging module 12 and the instrument tube 13 in the first direction X also helps reduce the maximum diameter of the tip cap 11, thereby miniaturizing the endoscope tip 10 in the radial direction. Furthermore, the imaging module 12 is further away from the proximal end of the endoscope 1000 than the instrument tube 13, thereby preventing the instrument tube 13 from obstructing the field of view of the imaging module 12, thereby enabling the imaging module 12 to better capture image information. In other embodiments, the cover 111 may also be arranged in a planar manner, with the distal end of the imaging module 12 and the distal end of the instrument tube 13 arranged coplanarly, although this embodiment of the present application is not limited thereto.

[0064] Exemplarily, the peripheral portion 113 may include a notch 1131, into which at least a portion of the imaging module 12 may be inserted, and / or at least a portion of the distal end of the instrument tube 13 may be inserted. In the embodiment of the present application, there may be two notches 1131, and the two notches 1131 may include a first notch 1131a and a second notch 1131b spaced apart along the circumferential direction of the head cover 11. The first notch 1131a communicates with the first chamber, and the second notch 1131b communicates with the second chamber. At least a portion of the imaging module 12 may be inserted into the first notch 1131a, and at least a portion of the instrument tube 13 may be inserted into the second notch 1131b. It is understood that at least a portion of the imaging module 12 may be embedded in the first notch 1131a, or the entire imaging module 12 may be embedded in the first notch 1131a; at least a portion of the instrument tube 13 may be embedded in the second notch 1131b, or the entire instrument tube 13 may be embedded in the second notch 1131b. In other embodiments, the number of notches 1131 may be one, three, or more, and other structural components housed in the head cover 11 may also be embedded in the notches 1131, which is not limited in this embodiment of the present application.

[0065] It can be understood that the peripheral portion 113 is a side wall with a certain thickness inside the head cover 11. The embodiment of the present application opens a notch 1131 on the peripheral portion 113, and embeds the structural parts installed in the head cover 11, such as the imaging module 12 and / or the instrument tube 13, into the notch 1131. The space occupied by the thickness of the peripheral portion 113 can be used to accommodate at least part of the imaging module 12 and / or at least part of the instrument tube 13, thereby increasing the space utilization rate of the endoscope tip 10 and improving the compactness of the arrangement of the structural parts (such as the head cover 11, the instrument tube 13 and the imaging module 12) inside the endoscope tip 10, which is conducive to the miniaturization of the endoscope tip 10 in the radial direction.

[0066] It can be understood that the endoscope tip 10 provided in the embodiment of the present application can fully utilize the space occupied by the head cover 11 by providing the notch 1131, and can achieve the miniaturization of the endoscope tip 10 while ensuring that the actual working performance function of the endoscope 1000 is not weakened (for example: the image clarity of the imaging module 12 is not reduced, that is, the space occupied by the imaging module 12 in the radial direction is not reduced, or the instrument channel size is not reduced, that is, the size of the instrument tube 13 in the radial direction is not reduced), so that the endoscope tip 10 can pass through a smaller channel in the body cavity and reach deeper into the body cavity, better diagnose and treat the patient, and is conducive to improving the patient's usage experience and reducing the patient's discomfort.

[0067] In some embodiments, the notch 1131 may extend to the second end 11b. In other words, one end of the notch 1131 is open, which helps to reduce the difficulty of installing at least part of the imaging module 12 and / or at least part of the instrument tube 13 into the notch 1131.

[0068] Please refer again Figure 3 and Figure 4 In some embodiments, when at least a portion of the imaging module 12 is embedded in the first notch 1131a, a portion of the circumferential side surface of the imaging module 12 embedded in the first notch 1131a can be flush with the outer surface of the peripheral portion 113 of the head end cover 11, and / or, when at least a portion of the instrument tube 13 is embedded in the second notch 1131b, a portion of the circumferential side surface of the instrument tube 13 embedded in the second notch 1131b can be flush with the outer surface of the peripheral portion 113 of the head end cover 11. By setting the embedding notch 1131 (such as Figure 5The circumferential side surface of the structural member (the imaging module 12 and / or the instrument tube 13) shown in FIG1 is flush with the outer surface of the peripheral portion 113 of the head end cover 11, which is conducive to more fully utilizing the space at the notch 1131 (the thickness of the head end cover 11) to accommodate the imaging module 12 and / or the instrument tube 13, thereby improving the space utilization rate of the head end cover 11 and facilitating the miniaturization of the head end cover 11. It can be understood that in the embodiment of the present application, the outer surface of the head end cover 11 is a curved surface, and a portion of the circumferential side surface of the imaging module 12 can be flush with the outer surface of the peripheral portion 113 of the head end cover 11. It should be understood that in the first direction X, a portion of the circumferential side surface of the imaging module 12 can be flush with the highest point of the curved peripheral portion 113 near the first notch 1131a. Similarly, a portion of the circumferential side surface of the instrument tube 13 can be flush with the highest point of the curved peripheral portion 113 near the second notch 1131b.

[0069] In some embodiments, the endoscope tip 10 may include a seal 18 (e.g., Figure 1 As shown), the seal 18 can at least cover the gap 1131 to ensure the sealing of the endoscope 1000 and prevent external impurities such as liquid and dust from entering the accommodating cavity 11c of the head cover 11 (as shown Figure 6 As shown), it affects the service life of the structural parts installed in the head end cover 11. It can be understood that the seal 18 can cover the gap between the first notch 1131a and the imaging module 12, that is, the seal 18 can cover part of the first notch 1131a, or the seal 18 can cover the entire opening area of ​​the first notch 1131a. Similarly, the seal 18 can cover the gap between the second notch 1131b and the instrument tube 13, or the seal 18 can cover the entire opening area of ​​the second notch 1131b, and even the seal 18 can surround the peripheral side of the head end cover 11. The embodiment of the present application is not limited to this. Exemplarily, the seal 18 can be a biocompatible glue, such as epoxy glue, UV glue (UltravioletRays, photosensitive glue, ultraviolet curing glue), etc., or the seal 18 can be made of a biocompatible material, such as a thermoplastic film formed by polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc. The sealing member 18 is biocompatible. In layman's terms, the sealing member 18 will not cause toxic effects on human tissues after entering the human body.

[0070] See also Figures 7 to 11 , Figure 7 yes Figure 3 The schematic diagram of the structure of the endoscope tip 10 shown in FIG. Figure 8 yes Figure 7The schematic cross-sectional view of the endoscope tip 10 at position BB is shown. Figure 9 yes Figure 7 The schematic diagram of the structure of the endoscope tip 10 shown in FIG. Figure 10 yes Figure 9 The schematic diagram of the structure of the endoscope tip 10 at another angle is shown. Figure 11 yes Figure 7 Schematic diagram of the exploded structure of the endoscope tip 10 in some embodiments. Figure 7 It can be understood as Figure 4 The diagram shows a partial structure of the endoscope distal end portion 10 with the instrument tube 13 removed.

[0071] In some embodiments, the lens 121 may include a lens (not shown) and a lens holder 1211. The lens may be housed in the lens holder 1211, and the image sensor 122 may be mounted at the proximal end of the lens holder 1211. Exemplarily, the lens holder 1211 may be a cylindrical structure, and may include a first barrel 121a and a second barrel 121b fixedly connected and communicating along a first direction X. The second barrel 121b is closer to the proximal end of the lens holder 1211 than the first barrel 121a. The diameter of the second barrel 121b may be larger than the diameter of the first barrel 121a. The image sensor 122 may be embedded in the proximal end of the second barrel 121b.

[0072] In some examples, the wall of the second cylinder 121b may be provided with a recessed space 121c (eg, Figure 11 The recessed space 121c can be formed by the wall of the second barrel 121b being recessed from the proximal end of the second barrel 121b to the distal end of the second barrel 121b. The number of recessed spaces 121c can be one, two, or more, and the plurality of recessed spaces 121c can be spaced apart along the circumference of the second barrel 121b. In the embodiment of the present application, the image sensor 122 is embedded in the proximal end of the second barrel 121b. A portion of the image sensor 122 can be embedded in the recessed space 121c and protrude relative to the peripheral side surface of the lens holder 1211, while the remaining portion of the image sensor 122 is surrounded by the second barrel 121b.

[0073] It is understandable that the second barrel 121b is used to carry the image sensor 122. The more pixels on the image sensor 122, the more conducive it is to improving the imaging quality of the imaging module 12. However, when the size of the image sensor 122 is larger, the size of the second barrel 121b will be affected by the size of the image sensor 122. By providing the recessed space 121c on the second barrel 121b, it is possible to carry a larger image sensor 122 without increasing the diameter of the second barrel 121b, thereby improving the imaging quality of the imaging module 12. For example, the image sensor 122 can be in a circular, elliptical, triangular, square, or other shape, which is not limited in this embodiment of the present application.

[0074] In some examples, the image sensor 122 may have an N-gonal structure, where N is an integer greater than or equal to 3, and at least two corners of the image sensor are embedded in the notch 1131. By arranging that at least two corners of the image sensor are embedded in the first notch 1131a, it is helpful to effectively improve the compactness of the arrangement of the image sensor 122 and the head cover 11, and realize the miniaturization of the endoscope tip 10 in the radial direction.

[0075] It can be understood that, for example, in the embodiment of the present application, the image sensor 122 is square as an example. The two corners of the image sensor 122 on the same side can be embedded in the first notch 1131a, and the part of the mirror seat 1211 located between the two corners can also be embedded in the first notch 1131a. At this time, the first notch 1131a can accommodate the maximum size of the image sensor 122 in the radial direction. The image sensor 122 and the head cover 11 are arranged compactly, and the diameter of the head cover 11 can be reduced without reducing the size of the image sensor 122, thereby ensuring the imaging quality and realizing the miniaturization of the endoscope tip 10 in the radial direction. For another example, in some other embodiments, when the image sensor 122 is triangular, the head cover 11 may be provided with three first notches 1131a spaced apart along the circumferential direction. The three corners of the image sensor 122 are respectively embedded in the three first notches 1131a. This can also effectively improve the compactness of the arrangement of the image sensor 122 and the head cover 11, and facilitate the miniaturization of the endoscope tip 10 in the radial direction. In some other embodiments, the number, position, size, etc. of the notches 1131 can be designed according to actual needs and are not limited in this embodiment of the present application.

[0076] Also, please refer again to Figure 7In the embodiment of the present application, part of the image sensor 122 and part of the lens base 1211 of the lens 121 can be embedded in the first notch 1131a, and at least part of the circumferential side surface of this part of the lens base 1211 can be flush with the outer surface of the head end cover 11 around the first notch 1131a. In some other embodiments, for example, when the size of the opening 112 of the first notch 1131a in the circumferential direction is small, only a corner of the image sensor 122 protruding relative to the lens base 1211 can be embedded in the first notch 1131a, or, when the circumferential side of the image sensor 122 is completely wrapped by the lens base 1211, the imaging module 12 is embedded in the first notch 1131a, or only part of the lens base 1211 is embedded in the first notch 1131a. The implementation of the present application does not limit the part of the imaging module 12 embedded in the first notch 1131a.

[0077] In some embodiments, the endoscope distal end 10 includes a light shielding member (not shown), which is located on a surface of the image sensor 122 that protrudes relative to the lens base 1211, and / or is located between the lens base 1211 and the image sensor 122, and is used to block light that has not passed through the lens 121 from entering the image sensor 122, thereby preventing external stray light from entering the image sensor 122 and affecting the imaging quality of the image sensor 122. Exemplarily, the light shielding member can be black UV glue (Ultraviolet Rays, photosensitive glue, ultraviolet curing glue), etc., which is not limited in the embodiments of the present application.

[0078] Please refer again Figures 8 to 10 In some embodiments, the endoscope tip 10 further includes a light-emitting element 14, which can be fixed to the peripheral side of the lens 121, and is used to emit light to illuminate the inspection area, so that the lens 121 of the imaging module 12 can receive the light reflected from the inspection area. This part of the light is adjusted by the lens 121 and incident on the image sensor 122 for photoelectric conversion to output image information of the lesion area. Exemplarily, the number of light-emitting elements 14 can be two, and the two light-emitting elements 14 can be fixed to the first barrel 121a and located on opposite sides of the first barrel 121a. In other embodiments, the number of light-emitting elements 14 can also be one, three or more, and the light-emitting elements 14 can also be fixed to other positions, which is not limited in the embodiments of the present application.

[0079] For example, the light emitting element 14 is closer to the first end 11a of the head cover 11 relative to the image sensor 122, and the surface of the light emitting element 14 facing away from the image sensor 122 can abut against the inner wall of the head cover 11. It can be understood that in the first direction X, the surface of the light emitting element 14 facing away from the image sensor 122 can be understood as the light emitting surface 141 of the light emitting element 14 (e.g., Figure 10As shown), in the process of installing the imaging module 12 and the light emitting element 14 into the first chamber, the light emitting surface 141 of the light emitting element 14 can be used to abut against the inner wall of the head cover 11 (the first plate 1111 (as shown) Figure 8 The imaging module 12 is judged to be installed in place by measuring the surface of the light-emitting component 14 (shown in FIG. 1 ), thereby realizing the positioning of the imaging module 12 and the head end cover 11 in the axial direction (in the first direction X). In addition, by setting the light-emitting surface 141 of the light-emitting component 14 to abut against the inner wall of the head end cover 11 (the surface of the first plate 1111 facing the light-emitting component 14), it is possible to avoid the light emitted through the light-emitting surface 141 of the light-emitting component 14 from being diffusely reflected in the head end cover 11, thereby affecting the imaging quality of the image sensor 122. Exemplarily, the light-emitting component 14 can be a light-emitting diode (LED) or a structural component such as an optical fiber, which is not limited in the embodiments of the present application.

[0080] In the embodiment of the present application, the light-emitting element 14 is taken as an example to be introduced as a light-emitting diode, wherein the light-emitting diode is a structural component that can emit light on multiple surfaces. Black UV glue (Ultraviolet Rays, photosensitive glue, ultraviolet curing glue) or other light-shielding structural components can be set on other surfaces of the light-emitting element 14 except the light-emitting surface 141 to prevent light from being emitted from other surfaces of the light-emitting element 14 and affecting the imaging quality of the image sensor 122.

[0081] Please refer to Figures 11 to 13 , Figure 12 yes Figure 9 The schematic diagram of the partial structure of the endoscope tip 10 after the flexible circuit board 15 is unfolded is shown. Figure 13 yes Figure 12 The diagram shows a partial structure of the endoscope tip portion 10 at another viewing angle after the flexible printed circuit board 15 is unfolded.

[0082] In some embodiments, the endoscope tip 10 may further include a circuit board for electrically connecting to structural components within the endoscope 1000, such as the image sensor 122 and the light-emitting element 14, to provide power and / or communication control. In the embodiment of the present application, the circuit board may be a foldable flexible circuit board 15. The foldable flexible circuit board 15 can be folded to better utilize the surrounding installation space while providing power and communication connections to the structural components within the endoscope 1000. In other embodiments, the circuit board may also be a rigid circuit board, which is not limited in the embodiment of the present application.

[0083] Exemplarily, the flexible circuit board 15 may include a first mounting plate 151, a second mounting plate 152, a first connecting plate 153 and two second connecting plates 154. The first mounting plate 151 is flat, and the image sensor 122 and the second mounting plate 152 are respectively located on opposite sides of the first mounting plate 151 in the first direction X. The first connecting plate 153 is bent and arranged between the first mounting plate 151 and the second mounting plate 152. The two second connecting plates 154 are respectively connected to the opposite sides of the first plate body 1111 and between the two light-emitting members 14.

[0084] The second mounting plate 152 may include a plurality of foldable sub-plates, and the endoscope tip 10 may further include electronic components 16, which may be fixed to and electrically connected to the second mounting plate 152. For example, the electronic components 16 may be voltage regulator chips with ultra-small packages, low noise, and high power supply rejection ratio (PSRR), used to provide 1.2V and 2.8V power supplies to the image sensor 122, etc., and a 24MHz active crystal oscillator to put the image sensor 122 in a ready-to-operate state. The present embodiment of the application does not limit the quantity, performance, size, specifications, etc. of the electronic components 16.

[0085] For example, when the flexible circuit board 15 is flattened, the first mounting plate 151, the second mounting plate 152, the first connecting plate 153 and the two second connecting plates 154 are arranged on the same plane. In this case, the flexible circuit board 15 can also be considered to include a first surface 15a and a second surface 15b arranged opposite to each other. The image sensor 122 can be connected to the first surface 15a, and the light emitting element 14 can be connected to the second surface 15b. By arranging the image sensor 122 and the light emitting element 14 to be connected to different surfaces of the flexible circuit board 15, after folding, as shown in FIG. Figure 9 and Figure 10 As shown, a portion of the circuit board 15 (part of the second connecting plate 154) can be located on the surface of the light-emitting element 14 facing the image sensor 122. While providing electrical connection, the circuit board 15 can also shield the surface of the light-emitting element 14 facing the image sensor 122. In this case, the electronic components 16 can also be disposed on the first surface 15a, which helps reduce the number of paths for electrical and communication connections between the electronic components 16 and the image sensor 122. In other embodiments, the electronic components 16 can also be disposed on the second surface 15b, which is not limited in this embodiment of the present application.

[0086] In other embodiments, the light-emitting element 14 may be an optical fiber. In this case, the second connecting plate 154 may not be included. The light-emitting element 14 is connected to the first mounting plate 151 via a wire or other means. The light-emitting element 14 and the image sensor 122 may both be connected to the first surface 15a. It will be understood that the relative arrangement of the first surface 15a and the second surface 15b is for the flexible circuit board 15 in a flat state. When the flexible circuit board 15 is folded, portions of the first surface 15a and portions of the second surface 15b may also face the same direction, and this is not limited in this embodiment of the present application.

[0087] Please refer to Figure 5 and Figure 14 , Figure 14 yes Figure 4 The schematic cross-sectional structure diagram of a part of the structure of the distal end portion 10 of the endoscope is shown at CC.

[0088] Exemplarily, the instrument tube 13 includes a first tube body 131, a second tube body 132 and a third tube body 133 connected in sequence, the first tube body 131 is closer to the first end 11a (the distal end of the endoscope 1000) than the second tube body 132, the second tube body 132 is bent toward the lens 121 relative to the first tube body 131, and the extension direction of the first tube body 131 is parallel to the extension direction of the third tube body 133. It can be understood that the distal end of the instrument tube 13 (the distal end of the first tube body 131) is housed in the head end cover 11, and the caliber of the head end cover 11 is affected by the arrangement and size of the imaging module 12 and the instrument tube 13. For the imaging module 12, the size occupied by the imaging module 12 in the radial direction mainly depends on the size of the image sensor 122. In the embodiment of the present application, the distal end of the first tube body 131 can be located on the side of the image sensor 122 away from the lens 121, so that the installation position of the instrument tube 13 avoids the widest part of the imaging module 12, which is beneficial to reducing the space occupied by the instrument tube 13 and the imaging module 12 in the radial direction. In addition, by setting the second tube body 132 to bend relative to the first tube body 131 toward the lens 121, the space in the head end cover 11 can be reasonably utilized, the compactness of the arrangement of the instrument tube 13 and the circuit board 15 (second mounting plate 152) can be improved, and it is also beneficial to achieve miniaturization of the endoscope tip 10 in the radial direction.

[0089] In some embodiments, the peripheral side surface of the head end of the endoscope distal end portion 10 includes a first portion and a second portion connected to each other, and the second portion is made of a flexible material. The first portion and the second portion have different stiffness or materials. For example, the stiffness of the first portion may be greater than that of the second portion. Specifically, the first portion may be made of a harder plastic, silicone, or other material to ensure that the first portion is not easily deformed. The second portion may be a flexible membrane formed of a material such as polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC), or an elastic rubber sheet, or an epoxy glue, UV glue (Ultraviolet Rays, photosensitive glue, ultraviolet curing glue), or other glue that forms a water-resistant, tough, and well-sealed adhesive layer after curing. The present embodiment of the application does not limit the materials of the first portion and the second portion.

[0090] Specifically, the first part and the second part can be provided with different structural strengths, and the rigidity of the first part can be used to form the structural strength foundation of the entire head cover 11. Then, the flexible material of the second part can be deformed, so that the space of the accommodating cavity 11c of the head cover 11 can be flexibly changed or partially changed, thereby meeting the specific setting requirements of the internal components of the endoscope tip 10 without causing the overall size of the endoscope tip 10 to increase. Specifically, since the endoscope tip 10 needs to be sealed to prevent external impurities such as liquids and dust from entering the accommodating cavity 11c of the head cover 11 without affecting the service life or imaging quality of the components installed in the head cover 11, a sealed connection is required between the first part and the second part.

[0091] Please refer to Figure 2 and Figure 15 As shown, Figure 15 yes Figure 2 The structure diagram of the snake bone 17 shown in another perspective.

[0092] In some embodiments, the distal end portion 10 of the endoscope further includes a snake bone 17, and the insertion tube 100 may further include a flexible tube 20, the two ends of the snake bone 17 are fixedly connected to the head end cover 11 and the flexible tube 20, and the snake bone 17 connects the head end cover 11 and the flexible tube 20, the lens 121 and the image sensor 122 are both located on the side of the snake bone 17 away from the flexible tube 20, and the end of the flexible tube 20 away from the head end cover 11 is connected to and connected to the handle 200.

[0093] Illustratively, the serpentine 17 may have a first lumen 171 extending through the serpentine 17 along a first direction X. The endoscope 1000 may further include a cable (not shown in the figures). The cable may be electrically connected to the imaging module 12 and pass through the first lumen 171, the flexible tube 20, and the handle 200 to connect to the external space of the endoscope 1000 through a communication port 2001 on the handle 200. The cable is used to transmit information acquired by the lens 121 and / or transmit operator control information for the lens 121. The end of the endoscope 1000 may be provided with a display device such as a display screen or a computer (not shown in the figures). The end of the cable extending from the communication port 2001 may also be provided with a connector 300. Inserting the connector 300 into the display device transmits the image acquired by the imaging module 12 to the display device for processing, thereby facilitating the doctor's observation of the conditions within the body cavity.

[0094] For example, the snake bone 17 may have a second through cavity 172 that passes through the snake bone 17 along the first direction X, and the proximal end of the instrument tube 13 (such as Figure 14 The third tube body 133 shown in FIG. 1 can be inserted into the second through cavity 172 and pass through the inner space of the flexible tube 20 to communicate with the handle 200. At this time, the instrument tube 13 can be inserted into the head end cover 11, the snake bone 17, the flexible tube 20 and the handle 200. The treatment instrument can be inserted into the instrument tube 13 through another communication port 2001 on the handle 200 and then pass through the installation port 1112a (as shown in FIG. Figure 14 As shown in FIG, the head cover 11 extends from the distal end thereof and reaches into the patient's body to work at a position to be visually inspected (eg, a body cavity).

[0095] For example, the snake bone 17 may include a plurality of snake bone segments 173 connected along the first direction X, the snake bone 17 may have a through hole 174, and the through hole 174 may penetrate the plurality of snake bone segments 173 in the first direction X. The endoscope 1000 may further include a driving member 400 (such as Figure 2 As shown) and traction wire 500 (as Figure 2 As shown in the figure, the driving member 400 can be installed on the handle 200 and connected to the internal space of the handle 200. The traction wire 500 is passed through the through hole 174 of the snake bone 17, the flexible tube 20 and the handle 200, and the traction wire 500 is fixedly connected between the end of the snake bone 17 closer to the head end cover 11 (for example, a snake bone node 173 closest to the head end cover 11) and the driving member 400. The driving member 400 is used to loosen or tighten the traction wire 500 to change the spacing between multiple snake bone nodes 173 on the side where the traction wire 500 is located, thereby driving the snake bone 17 to bend and changing the position of the endoscope tip 10.

[0096] Exemplarily, the driving member 400 may include a rotating wheel (not shown in the figures) and an operating rod 41, the rotating wheel is accommodated in the internal space of the handle 200, the operating rod 41 is fixedly connected to the rotating wheel, and the traction wire 500 is fixedly connected between the snake bone 17 and the rotating wheel. The operator can toggle the operating rod 41 to drive the rotating wheel to rotate, thereby driving the traction wire 500 to move, and then drive the traction wire 500 to tighten or relax, so as to achieve the bending of the insertion tube 100, thereby adjusting the position of the lens 121. In the embodiment of the present application, there are two traction wires 500. In other embodiments, the number of traction wires 500 can also be one, three, four or more, and the present application does not limit this.

[0097] Please refer again Figure 1 In some embodiments, the endoscope 1000 may further include a cover 600, which may be mounted on the snake bone 17 (eg, Figure 2 As shown) periphery, it is used to prevent external impurities such as liquid or dust from entering the snake bone 17 and affecting the bending performance of the snake bone 17.

[0098] When using the endoscope 1000, an operator can hold the handle 200 to insert the insertion tube 100 of the endoscope 1000 into a location to be examined (e.g., a body cavity). The lens 121, mounted at the distal end of the insertion tube 100, is directed toward the location to be examined to obtain information there. A therapeutic instrument or other tool is inserted from the handle 200 into the proximal end of the instrument tube 13 and extends from the distal end of the instrument tube 13 and the mounting hole 1112a of the head end cap 11 to perform work at the location to be examined. To adjust the position of the endoscope's distal end 10, the operator operates the operating lever 41 of the driver 400, which drives the traction wire 500 to move. By tightening or loosening the traction wire 500, the serpentine 17 is bent, thereby moving the head end cap 11 connected to the serpentine 17, thereby adjusting the position of the lens 121 and adjusting the insertion position of the insertion tube 100 within the body cavity.

[0099] Understandably, Figure 2 and Figure 15 The shapes, sizes and connection relationships of the snake bones 17 and related components shown in the related drawings are only schematic representations. In other embodiments, they can be adjusted as needed, and this application does not limit this.

[0100] In addition, the endoscope tip portion 10 provided in the embodiment of the present application can also be applied to endoscopes 1000 of other structures, and the embodiment of the present application does not limit this.

[0101] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An endoscope tip, characterized in that: The device comprises a head end cap, an imaging module and an instrument tube. The imaging module comprises a lens and an image sensor. The image sensor is located on the image side of the lens. The imaging module is used to capture images on the object side of the lens. The instrument tube is spaced apart from the imaging module and is used to provide a passage for the therapeutic instrument. The head cover includes a first end and a second end that are oppositely disposed. The imaging module is housed in the head cover, and the lens is disposed corresponding to the light-transmitting hole of the first end. One end of the instrument tube is located in the head cover and communicates with the mounting hole of the first end, and the other end of the instrument tube extends out of the second end. The first end and the second end are two ends of the periphery of the head end cover, and the periphery of the head end cover includes a notch, and at least part of the imaging module is embedded in the notch, and / or at least part of the instrument tube is embedded in the notch.

2. The endoscope tip according to claim 1, wherein: The notch extends to the second end.

3. The endoscope tip according to claim 1 or 2, characterized in that: When at least part of the imaging module is embedded in the notch, a portion of the circumferential side surface of the imaging module embedded in the notch is flush with the outer surface of the periphery of the head end cover, and / or, when at least part of the instrument tube is embedded in the notch, a portion of the circumferential side surface of the instrument tube embedded in the notch is flush with the outer surface of the periphery of the head end cover.

4. The endoscope tip according to claim 1 or 2, characterized in that: When at least a portion of the imaging module is embedded in the notch, a portion of the image sensor is embedded in the notch, and / or a portion of the lens mount is embedded in the notch.

5. The endoscope tip portion according to claim 4, wherein: The image sensor is embedded in the lens base, and a portion of the image sensor protrudes relative to a peripheral side surface of the lens base.

6. The endoscope tip portion according to claim 5, wherein: The distal end of the endoscope includes a light-shielding member, which is located on the surface of the image sensor exposed relative to the lens base, and / or the light-shielding member is located between the lens base and the image sensor, and is used to block light that has not passed through the lens from being incident on the image sensor.

7. The endoscope tip portion according to claim 5, wherein: The image sensor has an N-gonal structure, where N is an integer greater than or equal to 3, and at least two corners of the image sensor are embedded in the notch.

8. The endoscope tip portion according to claim 1 or 2, wherein: The endoscope distal end portion includes a seal that covers at least the notch.

9. The endoscope tip portion according to claim 8, wherein: The sealing component is glue or thermoplastic film with biocompatibility.

10. The endoscope tip portion according to claim 1 or 2, wherein: The instrument tube includes a first tube body, a second tube body and a third tube body connected in sequence, the first tube body is closer to the first end than the second tube body, the second tube body is bent toward the lens relative to the first tube body, and the extension direction of the first tube body is parallel to the extension direction of the third tube body.

11. The endoscope tip portion according to claim 1 or 2, wherein: The distal end of the endoscope includes a light-emitting element and a foldable flexible circuit board, the flexible circuit board includes a first surface and a second surface arranged opposite to each other, the image sensor is connected to the first surface, the light-emitting element is connected to the second surface, and the light-emitting element is closer to the first end than the image sensor.

12. The endoscope tip portion according to claim 11, wherein: The light emitting component is fixed to the lens, and a surface of the light emitting component facing away from the image sensor abuts against an inner wall of the head end cover.

13. An endoscope tip, characterized in that: The device comprises a head end cap, an imaging module and an instrument tube. The imaging module comprises a lens and an image sensor. The image sensor is located on the image side of the lens. The imaging module is used to capture images on the object side of the lens. The instrument tube is spaced apart from the imaging module and is used to provide a passage for the therapeutic instrument. The head cover includes a first end and a second end that are oppositely disposed. The imaging module is housed in the head cover, and the lens is disposed corresponding to the light-transmitting hole of the first end. One end of the instrument tube is located in the head cover and communicates with the mounting hole of the first end, and the other end of the instrument tube extends out of the second end. The first end and the second end are two ends of the periphery of the head end cover. The periphery of the head end cover includes a first part and a second part, and the second part is made of a flexible material.

14. An endoscope, characterized in that: The endoscope comprises a flexible tube, a handle, a driving member, a traction wire, and the endoscope tip according to any one of claims 1 to 13, wherein the endoscope tip further comprises a snake bone, the two ends of the snake bone are respectively fixedly connected to the head end cover and the flexible tube, and the snake bone communicates with the head end cover and the flexible tube, the lens and the image sensor are both located on a side of the snake bone away from the flexible tube, and the instrument tube is passed through the head end cover, the snake bone, and the flexible tube; The end of the flexible tube facing away from the head end cover is connected to and communicated with the handle, the driving member is installed on the handle, the traction wire is passed through the snake bone, the flexible tube and the handle, and the traction wire is fixedly connected between the end of the snake bone closer to the head end cover and the driving member, and the driving member is used to relax or tighten the traction wire to drive the snake bone to bend, thereby changing the position of the tip of the endoscope.

Images