Endoscope tip and endoscope

Abstract

The embodiment of the invention 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, the tip of which can be inserted into a position that cannot be reached by visual inspection, such as the body cavity of the human body, to assist doctors in observing and diagnosing diseases. The tip of an endoscope may include a head cover and a lens installed in the head cover, an image sensor, a flexible printed circuit board (FPC), an instrument tube and other components, wherein the lens, image sensor and flexible printed circuit board can be used together to realize the acquisition of images in the body cavity, and the instrument tube is used to provide a channel for the treatment instrument to pass through.

[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 smaller channels in the body cavity, limiting the range of the endoscope in the body cavity and affecting the comfort of the patient.

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

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

[0006] In the 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 is located on the image side of the lens, the imaging module is used to collect images on the object side of the lens, the instrument tube and the imaging module are arranged at intervals, and the instrument tube is used to provide a passage for the therapeutic instrument to pass through; the head cover includes a first end and a second end that are arranged oppositely, the imaging module is accommodated in the head cover, and the lens is arranged corresponding to the light-transmitting hole of the first end, one end of the instrument tube is located in the head cover and connected to 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 cover, and the periphery of the head cover includes a notch, 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.

[0007] In a possible implementation manner, 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 periphery 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 periphery 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 tip 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 being incident on 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 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 having 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 that are relatively arranged, 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 head cover.

[0018] In a second aspect, an embodiment of the present application provides another endoscope tip portion, the endoscope tip portion includes a head end cover, an imaging module and an instrument tube, the imaging module includes a lens and an image sensor, the image sensor is located on the image side of the lens, the imaging module is used to collect an image on the object side of the lens, the instrument tube is spaced apart from the imaging module, and the instrument tube is used to provide a passage for the therapeutic instrument to pass through;

[0019] The head end cover comprises a first end and a second end which are arranged opposite to each other, the imaging module is accommodated in the head end cover, and the lens is arranged corresponding to the light-transmitting hole of the first end, one end of the instrument tube is located in the head end cover and connected to the mounting hole of 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 driving member, and a traction wire in any of the above implementations, the endoscope tip portion further comprising 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 connects the head end cover and the flexible tube, the lens and the image sensor are both located on the side of the snake bone away from the flexible tube, and the instrument tube is inserted into the head end cover, the snake bone, and the flexible tube;

[0022] 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.

[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. The wall thickness of the head end cover (the space at the notch) can be utilized, thereby improving the utilization rate of the space occupied by the head end cover and the compactness of the arrangement of the head end cover, the imaging module and the instrument tube, which is conducive to miniaturization of the radial dimension 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 the present application.

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

[0026] Figure 2 yes Figure 1 The illustrated endoscope is a schematic diagram of a portion of the structure in some embodiments;

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

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

[0033] Fig. 9 yes Figure 7 A schematic diagram of the structure of a portion of the endoscope tip shown;

[0034] Fig.10 yes Fig. 9 The schematic diagram of the structure of the endoscope tip portion shown in another angle;

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

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

[0037] Fig.13 yes Fig.12 A schematic diagram showing a partial structure of the endoscope tip portion at another viewing angle after the flexible printed circuit board is unfolded;

[0038] Fig.14 yes Figure 4 The schematic diagram of the cross-sectional structure of the partial structure of the endoscope tip at CC is shown;

[0039] Fig.15 yes Figure 2 The structure diagram of the snake bone shown in 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 the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "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 of 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 referred device or element 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 relationship are mentioned, such as parallel, vertical, and flush. These limitations are all for the current technological level, rather than absolutely strict limitations, and a small amount of deviation is allowed, and approximately parallel, approximately vertical, 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 the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

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

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

[0047] See also Figure 1 and Figure 2 , Figure 1 It is a schematic diagram of the structure 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, the endoscope 1000 may include an insertion tube 100 and a handle 200, one end of the insertion tube 100 being inserted into the handle 200 and connected to the internal space of the handle 200. The endoscope 1000 may be used to visually inspect inaccessible locations, such as a body cavity of a human body. When the endoscope 1000 is in use, the handle 200 faces the operator, the operator may hold the handle 200, the insertion tube 100 is located on the side of the handle 200 away from the operator, and the insertion tube 100 may be used to extend into the patient's body.

[0049] Exemplarily, the handle 200 may be a hollow structure, and a communication port 2001 may be provided on the handle 200, which is used to connect the internal space of the handle 200 with the external space of the handle 200, and provide a channel for connecting and communicating with the outside world for the structural parts in the internal space of the handle 200 or the structural parts connected to the internal space of the handle 200. For example, one end of the insertion tube 100 may be inserted into one of the communication ports 2001, and the insertion tube 100 and the structural parts therein may 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 be connected to the structural parts (such as a display device or a driving member 400, etc.) in the external space of the handle 200. It is understandable that the number of the communication ports 2001 may be one, two, three or more, and the embodiments of the present application are not limited to this.

[0050] It is understood that for the convenience of description in the following text, 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 pointed 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 operator uses the endoscope 1000 is near, and the direction away from the operator is far. That is, 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 the present 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 at another viewing angle is shown. Figure 5 yes Figure 4 The illustrated diagram is a schematic diagram of the structural decomposition of a portion of the endoscope tip 10 in some embodiments.

[0053] In some embodiments, the insertion tube 100 may include an endoscope tip 10, which may include a head cover 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 accommodated in the head cover 11, and the other end of the instrument tube 13 (the proximal end of the instrument tube 13) may extend out of the head cover 11. The endoscope tip 10 is the portion of the insertion tube 100 closer to the distal end of the endoscope 1000, that is, 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 collect images on the object side of the lens 121. For example, when the endoscope tip 10 is inserted into the patient's body cavity, the lens 121 can be used to collect ambient light in the body cavity. The image sensor 122 is also called a photosensitive chip or a photosensitive element. The image sensor 122 can be used to convert the image information carried by the ambient light collected by the lens 121 into an electrical signal. The electrical signal is transmitted to a display device capable of displaying images, so that the image in the body cavity collected by the imaging module 12 can be reproduced. In addition, when the image sensor 122 contains more pixels, the clarity of the image collected by the imaging module 12 is higher, which is more conducive to the operator to observe 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 are not limited to 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 caliber of the instrument tube 13, the more conducive it is to allow more models and sizes of therapeutic instruments to enter the patient's body cavity through the instrument tube 13, 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 structure diagram of the head end cover 11 at AA is shown.

[0058] In some embodiments, the head end cover 11 may include a first end 11a and a second end 11b disposed opposite to each other in its extension direction (ie, in the first direction X), and the first end 11a of the head end 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 in the figure), the head end cover 11 may also 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. Among them, when the endoscope 1000 is used, 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 the 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 ends 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) in the endoscope 1000. 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 conducive to improving the smoothness of the outer surface of the endoscope tip 10, and avoiding the patient's strong foreign body sensation or scratching of the patient when the outer surface has edges and corners during the process of entering the patient's body cavity. In some other embodiments, the shape of the head end cover 11 can also be set as needed. For example, the head end cover 11 can also be approximately in the shape of a square column, etc., which is not limited in the embodiment of the present application. Among them, the head end cover 11 can be made of materials such as plastic and rubber, which is not limited in the embodiment of the present application.

[0060] For example, the cover plate 111 (eg Figure 4The first plate 1111 may include a light-transmitting hole 1111a, which may penetrate the first plate 1111 in the first direction X, and the second plate 1112 may include a mounting hole 1112a, which may penetrate the second plate 1112 in the first direction X. The second plate 1112 may be inclined relative to the first plate 1111 toward the proximal end of the head cover 11. The head cover 11 may also include a partition 114 (as shown in FIG. 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, so as 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 accommodating chamber 11c is divided into a first chamber and a second chamber by providing a partition 114, which is conducive to simplifying 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, and can also avoid the imaging module 12 and the instrument tube 13 and other structural parts installed on the head cover 11. When the head cover 11 moves, there are problems such as displacement or interference with each other, which affects 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, and the embodiment of the present application is not limited to this.

[0063] In addition, the second plate 1112 is inclined relative to the first plate 1111 in the direction toward the proximal end of the head end cover 11, and the distal end of the imaging module 12 and the distal end of the instrument tube 13 can be respectively located at the 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 setting the second plate 1112 to be inclined relative to the first plate 1111 in the direction toward the proximal end of the head end cover 11, the caliber of the head end cover 11 close to its proximal end gradually increases in the direction from the distal end to the proximal end of the head end cover 11, which can reduce the discomfort of the patient during the process of the endoscope tip 10 entering the patient's body. In addition, in the first direction X, the imaging module 12 and the instrument tube 13 are staggered, which is also conducive to reducing the maximum caliber of the head end cover 11 and realizing the miniaturization of the endoscope tip 10 in the radial direction. In addition, the imaging module 12 is further away from the proximal end of the endoscope 1000 than the instrument tube 13, which can also prevent the instrument tube 13 from blocking the field of view of the imaging module 12, which is conducive to enabling the imaging module 12 to better collect image information. In other embodiments, the cover plate 111 can also be arranged in a plane, and the distal end of the imaging module 12 and the distal end of the instrument tube 13 are arranged in the same plane, which is not limited in the embodiment of the present application.

[0064] Exemplarily, the peripheral portion 113 may include a notch 1131, and at least part of the imaging module 12 may be embedded in the notch 1131, and / or at least part of the distal end of the instrument tube 13 may be embedded in the notch 1131. In the embodiment of the present application, the number of the notches 1131 may be two, 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 end cover 11, the first notch 1131a communicating with the first chamber, and the second notch 1131b communicating with the second chamber, at least part of the imaging module 12 may be embedded in the first notch 1131a, and at least part of the instrument tube 13 may be embedded in the second notch 1131b. It can be understood that at least part of the imaging module 12 is embedded in the first notch 1131a, which may be part of the imaging module 12 embedded in the first notch 1131a, or all of the imaging module 12 is embedded in the first notch 1131a; at least part of the instrument tube 13 is embedded in the second notch 1131b, which may be part of the instrument tube 13 embedded in the second notch 1131b, or all of the instrument tube 13 is embedded in the second notch 1131b. In other embodiments, the number of notches 1131 may be one, three or more, and other structural components contained in the head end cover 11 may also be embedded in the notch 1131, which is not limited in the embodiment of the present application.

[0065] It can be understood that the peripheral portion 113 is a side wall with a certain thickness in the head end 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 end 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 a portion of the imaging module 12 and / or at least a portion of the instrument tube 13, thereby increasing the utilization rate of the space of the endoscope tip 10 and improving the compactness of the arrangement of the structural parts (such as the head end cover 11, the instrument tube 13 and the imaging module 12) in the endoscope tip 10, which is conducive to realizing 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 make full use of the space occupied by the head cover 11 by providing the notch 1131, and can achieve 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 instrument tube 13 size 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 to better diagnose and treat the patient, and it is beneficial to improve the patient's usage experience and reduce 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 may 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 may 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 (imaging module 12 and / or instrument tube 13) (shown) is flush with the outer surface of the circumference 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, improving the space utilization rate of the head end cover 11, and is conducive to 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 an arc surface, and a part of the circumferential side surface of the imaging module 12 can be flush with the outer surface of the circumference 113 of the head end cover 11. It should be understood that in the first direction X, a part of the circumferential side surface of the imaging module 12 can be flush with the highest point of the arc-shaped circumference 113 near the first notch 1131a. Similarly, a part of the circumferential side surface of the instrument tube 13 can be flush with the highest point of the arc-shaped circumference 113 near the second notch 1131b.

[0069] In some embodiments, the endoscope tip 10 may include a seal 18 (eg, 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 end cover 11 (as shown in FIG. Figure 6 As shown), the service life of the structural parts installed in the head end cover 11 is affected. 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, which is not limited in the embodiment of the present application. 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 seal 18 is biocompatible. In layman's terms, the seal 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 structure diagram of the partial structure of the endoscope tip 10 at BB is shown, Fig. 9 yes Figure 7 The schematic diagram of the structure of the endoscope tip 10 shown in FIG. Fig.10 yes Fig. 9 The schematic diagram of the structure of the endoscope tip 10 at another angle is shown. Fig.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 schematic diagram of the structure of the endoscope tip portion 10 is a partial structure 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 accommodated in the lens holder 1211, and the image sensor 122 may be installed at the proximal end of the lens holder 1211. Exemplarily, the lens holder 1211 may be a cylindrical structure, and the lens holder 1211 may include a first barrel 121a and a second barrel 121b fixedly connected and communicating along the first direction X, the second barrel 121b is closer to the proximal end of the lens holder 1211 than the first barrel 121a, the caliber of the second barrel 121b may be larger than the caliber of the first barrel 121a, and 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, Fig.11 As shown in FIG. 1 , 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, wherein the number of the recessed spaces 121c can be one, two or more, and the plurality of recessed spaces 121c can be arranged at intervals along the circumferential direction 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, and 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, and the other portion of the image sensor 122 is surrounded by the second barrel 121b.

[0073] It can be understood 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 improve the imaging quality of the imaging module 12. It will also lead to that 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 second barrel 121b with a recessed space 121c, it is possible to carry a larger image sensor 122 without increasing the caliber of the second barrel 121b, so as to improve the imaging quality of the imaging module 12. Exemplarily, the image sensor 122 can be circular, elliptical, triangular, square, etc., which is not limited in the embodiment of the present application.

[0074] In some examples, the image sensor 122 may be 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 located 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 end cover 11 are arranged compactly, and the diameter of the head end cover 11 can be reduced without reducing the size of the image sensor 122. The miniaturization of the endoscope tip 10 in the radial direction is achieved while ensuring the imaging quality. For another example, in some other embodiments, when the image sensor 122 is triangular, three first notches 1131a spaced apart in the circumferential direction may be provided on the head end cover 11, and the three corners of the image sensor 122 are respectively embedded in the three first notches 1131a, which can also effectively improve the compactness of the arrangement of the image sensor 122 and the head end cover 11, and is conducive to 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 the embodiments of the present application are not limited thereto.

[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 seat 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 seat 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 seat 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 seat 1211, the imaging module 12 is embedded in the first notch 1131a, or only part of the lens seat 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 tip 10 includes a light shielding member (not shown in the figure), which is located on the surface of the image sensor 122 protruding relative to the lens holder 1211, and / or the light shielding member is located between the lens holder 1211 and the image sensor 122, and is used to block the light that has not passed through the lens 121 from being incident on the image sensor 122, and to prevent external stray light from being incident on the image sensor 122, thereby 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 member 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. After being adjusted by the lens 121, this part of the light is incident on the image sensor 122 for photoelectric conversion to output image information of the lesion area. Exemplarily, the number of light emitting members 14 can be two, and the two light emitting members 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 members 14 can also be one, three or more, and the light emitting members 14 can also be fixed to other positions, which is not limited in the embodiments of the present application.

[0079] Exemplarily, 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. Fig.10As shown in FIG. 1 , when the imaging module 12 and the light emitting member 14 are installed in the first chamber, the light emitting surface 141 of the light emitting member 14 can be used to abut against the inner wall of the head end cover 11 (the first plate 1111 (as shown in FIG. 1 ). Figure 8 The imaging module 12 is judged to be installed in place by judging that the imaging module 12 is installed in place, 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 component 14 is taken as a light-emitting diode for example, wherein the light-emitting diode is a structural component that can emit light on multiple sides. Black UV glue (Ultraviolet Rays, photosensitive glue, ultraviolet curing glue) or other structural components used for shading can be set on the surfaces of the light-emitting component 14 other than the light-emitting surface 141 to prevent light from being emitted from other surfaces of the light-emitting component 14 and affecting the imaging quality of the image sensor 122.

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

[0082] In some embodiments, the endoscope tip 10 may further include a circuit board for electrically connecting the structural components in the endoscope 1000, such as the image sensor 122, the light emitting component 14, etc., to provide them with power and / or communication control. In the embodiment of the present application, the circuit board may be a foldable flexible circuit board 15, which may be folded to better utilize the nearby installation space while realizing the power supply and communication connection of the structural components in the endoscope 1000. In some 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 in the shape of a plate, 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, and the two second connecting plates 154 are respectively connected to opposite sides of the first plate body 1111 and between the two light-emitting members 14.

[0084] Among them, the second mounting plate 152 may include a plurality of folded sub-plates, and the endoscope tip 10 may also include an electronic component 16, which may be fixed to and electrically connected to the second mounting plate 152. Exemplarily, the electronic component 16 may be a voltage stabilizing chip with an ultra-small package, low noise, and high power supply rejection ratio (PSRR), which is used to provide 1.2V and 2.8V power supply to the image sensor 122, etc., and an active crystal oscillator of 24MHZ, so that the image sensor 122 is in a working ready state. The embodiment of the present application does not limit the number, performance, size, specifications, etc. of the electronic component 16.

[0085] Exemplarily, 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. At this time, 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. Fig. 9 and Fig.10 As shown, part of the circuit board 15 (part of the second connecting board 154) can be located on the surface of the light emitting element 14 facing the image sensor 122. The circuit board 15 can not only play an electrical connection role but also shield the surface of the light emitting element 14 facing the image sensor 122. At this time, the electronic components 16 can also be arranged on the first surface 15a, which is conducive to reducing the path of the electronic components 16 and the image sensor 122 for power and communication connection. In other embodiments, the electronic components 16 can also be arranged on the second surface 15b, which is not limited in the embodiment of the present application.

[0086] In some other embodiments, the light emitting element 14 may be an optical fiber, in which case the second connecting plate 154 may not be included, the light emitting element 14 is connected to the first mounting plate 151 by means of a wire or the like, and the light emitting element 14 and the image sensor 122 may both be connected to the first surface 15a. It is understood that the relative arrangement of the first surface 15a and the second surface 15b is for the flexible circuit board 15 to be in a flattened state, and when the flexible circuit board 15 is folded, part of the first surface 15a and part of the second surface 15b may also face the same direction, which is not limited in the embodiments of the present application.

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

[0088] Exemplarily, the instrument tube 13 includes a first tube body 131, a second tube body 132 and a third tube body 133 which are 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 accommodated 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 reduce 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) is improved, and it is also beneficial to achieve the 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 tip portion 10 includes a first part and a second part connected to each other, and the second part is made of a flexible material. Among them, the first part and the second part have different rigidity or materials, for example, the rigidity of the first part can be greater than the rigidity of the second part. Specifically, the first part can be made of harder plastic, silicone and other materials to ensure that the first part is not easily deformed, and the second part can be a flexible membrane formed by materials such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or an elastic rubber sheet, or epoxy glue, UV glue (Ultraviolet Rays, photosensitive glue, ultraviolet curing glue) and other glues that are cured to form a water-resistant, tough, and good sealing glue layer, etc. The present application embodiment does not limit the materials of the first part and the second part.

[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, and the second part can be provided with the flexible material capable of deformation, so that the space of the accommodation 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, and at the same time will not increase the overall size of the endoscope tip 10. Specifically, since the endoscope tip 10 needs to be sealed to prevent external impurities such as liquids and dust from entering the accommodation 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 Fig.15 As shown, Fig.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 respectively 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] Exemplarily, the snake bone 17 may have a first through cavity 171 that passes through the snake bone 17 along the first direction X. The endoscope 1000 may also include a cable (not shown in the figure). The cable may be electrically connected to the imaging module 12 and pass through the first through cavity 171, the flexible tube 20 and the handle 200 to connect to the external space of the endoscope 1000 through the connecting port 2001 on the handle 200. The cable is used to transmit information acquired by the lens 121 and / or transmit the operator's control information on the lens 121. The outside of the endoscope 1000 may have a display device such as a display screen, a computer, etc. (not shown in the figure). The end of the cable extending out of the connecting port 2001 may also be provided with a connector 300. Inserting the connector 300 into the display device can transmit the image collected by the imaging module 12 to the display device for processing, so as to facilitate the doctor to observe the situation in the body cavity.

[0094] For example, the snake bone 17 may have a second through cavity 172 that penetrates the snake bone 17 along the first direction X, and the proximal end of the instrument tube 13 (such as Fig.14 The third tube body 133 shown in the figure 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, and 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 (such as Fig.14 The head cover 11 (as shown) extends from the distal end of the head cover 11 and reaches into the patient's body to work at the location to be visually inspected (such as a body cavity).

[0095] Exemplarily, the snake bone 17 may include a plurality of snake bone nodes 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 nodes 173 in the first direction X. The endoscope 1000 may also 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 relax 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 distal end 10 of the endoscope.

[0096] Exemplarily, the driving member 400 may include a rotating wheel (not shown in the figure) 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 turn 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 drive the insertion tube 100 to bend, 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 sleeved on the snake bone 17 (eg Figure 2 The outer periphery is used to prevent foreign impurities such as liquid or dust from entering the snake bone 17 and affecting the bending performance of the snake bone 17.

[0098] When the endoscope 1000 is in use, the operator can hold the handle 200 to send the insertion tube 100 of the endoscope 1000 into the position to be inspected (for example, in the body cavity). Among them, the lens 121 installed at the distal end of the insertion tube 100 faces the position to be inspected to obtain information at the position to be inspected, and the treatment instrument and other tools extend from the handle 200 into the proximal end of the instrument tube 13, and extend from the distal end of the instrument tube 13 and the mounting hole 1112a of the head end cover 11 to work at the position to be inspected. When it is necessary to adjust the position of the endoscope tip 10, the operator operates the operating rod 41 of the driving member 400, and the driving member 400 drives the traction wire 500 to move, and drives the traction wire 500 to tighten or relax to achieve the bending of the snake bone 17, thereby driving the head end cover 11 connected to the snake bone 17 to move, thereby adjusting the position of the lens 121 and adjusting the insertion position of the insertion tube 100 in the body cavity.

[0099] Understandably, Figure 2 and Fig.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 the present 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 is not limited to this.

[0101] The above are only some embodiments and implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An endoscope tip, It is characterized in that It comprises a head end cover, an imaging module and an instrument tube, wherein the imaging module comprises a lens and an image sensor, wherein the image sensor is located on the image side of the lens, and the imaging module is used to collect an image on the object side of the lens, and the instrument tube is spaced apart from the imaging module, and the instrument tube is used to provide a passage for the therapeutic instrument to pass through; The head end cover comprises a first end and a second end which are arranged opposite to each other, the imaging module is accommodated in the head end cover, and the lens is arranged corresponding to the light-transmitting hole of the first end, one end of the instrument tube is located in the head end 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 a portion of the imaging module is embedded in the notch, and / or at least a portion of the instrument tube is embedded in the notch.

2. The endoscope tip according to claim 1, It is characterized in that The notch extends to the second end.

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

5. The endoscope tip according to claim 4, It is characterized in that The image sensor is embedded in the lens seat, and a portion of the image sensor protrudes relative to the peripheral side surface of the lens seat.

6. The endoscope tip according to claim 5, It is characterized in that The front end of the endoscope includes a shading member, which is located on the surface of the image sensor exposed relative to the lens holder, and / or the shading member is located between the lens holder 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 according to claim 5, It is characterized in that The image sensor is 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 according to claim 1 or 2, It is characterized in that The endoscope distal end portion includes a seal that covers at least the notch.

9. The endoscope tip according to claim 8, It is characterized in that The sealing member is glue or a thermoplastic film with biocompatibility.

10. The endoscope tip according to claim 1 or 2, It is characterized in that The instrument tube includes a first tube body, a second tube body and a third tube body which 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 an extension direction of the first tube body is parallel to an extension direction of the third tube body.

11. The endoscope tip according to claim 1 or 2, It is characterized in that The distal end of the endoscope includes a light-emitting element and a foldable flexible circuit board, wherein 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 according to claim 11, It is characterized in that 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, It is characterized in that It comprises a head end cover, an imaging module and an instrument tube, wherein the imaging module comprises a lens and an image sensor, wherein the image sensor is located on the image side of the lens, and the imaging module is used to collect an image on the object side of the lens, and the instrument tube is spaced apart from the imaging module, and the instrument tube is used to provide a passage for the therapeutic instrument to pass through; The head end cover comprises a first end and a second end which are arranged opposite to each other, the imaging module is accommodated in the head end cover, and the lens is arranged corresponding to the light-transmitting hole of the first end, one end of the instrument tube is located in the head end 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, It is 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 also 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 connects the head end cover and the flexible tube, the lens and the image sensor are both located on the side of the snake bone away from the flexible tube, and the instrument tube is inserted into 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