Endoscope tip structure and endoscope

Abstract

The utility model discloses an endoscope tip structure which comprises an outer tube, an image module and an inner tube, the image module comprises a plugging head, and an imaging assembly used for collecting and transmitting images and an illumination light source used for providing illumination are arranged in the plugging head; the plugging head is in butt joint with a port of the outer pipe to form an insertion end. The illumination light sources are symmetrically arranged on the two sides of a lens of the imaging assembly. The inner tube is arranged in the outer tube, the hollow structure of the inner tube forms an instrument channel for an instrument to pass through, and a first notch with a certain length D is formed in the side wall of the end of the inner tube; an expansion port communicated with the instrument channel is formed in the side wall, directly facing the first notch, of the insertion end; a rotary cutting gap is formed in the side wall of the inner pipe in a spiral stroke shape, and the rotary cutting gap forms a bendable bending structure on the tip end portion of the inner pipe. The image acquisition device is reasonable in structural layout and better in image acquisition effect and instrument operation space. The utility model further discloses an endoscope with the tip part structure of the endoscope.

Description

Technical Field

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

[0002] Endoscopes are widely used in the fields of industrial and medical detection; especially in the medical industry for detection and treatment. Endoscopes used in the medical industry can be directly inserted into the human body for observation and diagnosis and treatment of diseases. The handheld body of the endoscope contains a proximal insertion portion, a distal bending portion, and a tip portion with an imaging module and a light source. As the first component to enter the human body, the tip portion directly affects the performance of the endoscope and the patient's comfort. For the tip portion, the rationality of its structural layout directly leads to the image acquisition effect and the operating space of the instrument. Therefore, it is necessary to reasonably layout the internal structure of the tip portion to provide the endoscope with better detection and treatment effects.

[0003] Therefore, there is an urgent need to provide an endoscope tip structure with a reasonable structural layout and better image acquisition effect and instrument operation space. Utility Model Content

[0004] The utility model aims to provide an endoscope tip structure which has a reasonable structural layout and better image acquisition effect and instrument operation space.

[0005] Another object of the utility model is to provide an endoscope having an endoscope tip structure with a reasonable structural layout and better image acquisition effect and instrument operation space.

[0006] To achieve the above object, the utility model provides an endoscope tip structure, which includes:

[0007] An outer tube having a hollow structure;

[0008] An imaging module, the imaging module comprising a plugging head, the plugging head having an imaging component for collecting and transmitting images and an illumination light source for providing illumination built therein; the plugging head is fixedly connected to the port of the outer tube by docking to form an insertion end of an integrated structure; the plugging head is provided with an imaging window facing the lens of the imaging component, and the illumination light source is symmetrically arranged on both sides of the lens of the imaging component;

[0009] An inner tube is arranged inside the outer tube, the inner tube is of a hollow structure, the hollow structure of the inner tube forms an instrument channel for instruments to pass through, the inner tube is provided with an inclined first notch of a certain length D on the side wall along the length direction of the inner tube from the end of the front end; an expansion opening is provided on the side wall of the insertion end directly opposite to the first notch, the expansion opening is connected with the instrument channel through the first notch so that the instrument can pass through the instrument channel;

[0010] A rotary cut slit is opened at the front end of the inner tube in a spiral shape along the length direction of the inner tube and around the circumference of the inner tube, and the rotary cut slit forms a bendable bending structure at the front end of the inner tube.

[0011] Compared with the prior art, the present invention has the following positive and beneficial effects: (1) The present invention symmetrically arranges the illumination light sources on both sides of the lens of the imaging component, thereby forming a side-mounted light source assembly structure. On the one hand, the visible area of ​​the lens is within the illumination range of the illumination light source, so that the image acquisition effect is better; on the other hand, the side-mounted light source assembly structure makes the assembly process quick, convenient and simple, thereby improving the assembly efficiency and the qualified rate; thus, the layout of the image module of the present invention is reasonable, and has an excellent image acquisition effect. (2) The formation of the first notch and the expansion opening of the utility model, and the setting that the expansion opening is connected to the instrument channel through the first notch to allow the instrument to pass through the instrument channel; make the outlet of the instrument channel of the utility model form an open channel structure; therefore, when the instrument is in use, when the instrument finally reaches the outlet of the instrument channel along the instrument channel, since the outlet of the instrument channel of the utility model forms an open channel structure, the instrument reaching the outlet of the instrument channel is less restricted and constrained, so that the position and orientation of the instrument can be adjusted as needed, so that the instrument reaching this point can pass through and cross the outlet, thereby greatly increasing the activity space of the instrument, thereby improving the instrument operation space, making the instrument operation space of the utility model better, and further supporting the use of more types of instruments, expanding more detection and treatment projects. (3) The rotary cut slit at the front end of the inner tube of the utility model forms a bendable bending structure; on the one hand, the bendable bending structure is formed by the rotary cut slit, so that the front end of the inner tube of the utility model has a full range of bending and rotation functions centered on its axial direction, further improving the controllability of the front end of the utility model and the activity space of the instrument; on the other hand, the inner tube of the utility model has a certain automatic reset function after bending, so that the front end structure of the endoscope of the utility model has a certain automatic reset function after bending.

[0012] Preferably, a slot is provided on the side wall of the plugging head of the endoscope tip structure of the utility model, and the port of the outer tube protrudes out of a plug-in portion corresponding to the slot, and the plug-in portion is fixed in the slot by docking and plugging to form the insertion end. The plugging head of the utility model is fixedly connected by docking and plugging with the plug-in portion protruding from the port of the outer tube through the slot on the side wall. On the one hand, the insertion end formed by the two forms an integrated structure, which is more firm and stable, ensuring that it will not fall off in the human body; on the other hand, the connection between the outer tube and the plugging head is smoothly transitioned, so that the entire appearance of the endoscope tip structure of the utility model is smooth, without unevenness and gaps, thereby ensuring that the movement of the endoscope tip structure of the utility model in the human body will not cause scratches to the human body, and at the same time, the movement of the endoscope tip structure of the utility model in the human body is faster, smoother and smoother.

[0013] Preferably, the plug-in parts of the tip structure of the endoscope of the utility model are symmetrically distributed on both sides of the outer tube, and a second notch is formed between the two plug-in parts; the plugging head has a third notch facing one of the two second notches, and the second notch is connected to the third notch to form the expansion port. The expansion port is formed by the docking and plugging of the second notch on the outer tube and the third notch on the plugging head; the expansion port is formed by effectively utilizing the docking and plugging structure of the outer tube and the plugging head, so that the expansion port is formed by assembly, which simplifies the manufacturing process and makes the assembly more efficient and quick; at the same time, the layout of the structure is optimized, and the structural layout is more reasonable and reliable.

[0014] Preferably, the third notch of the endoscope tip structure of the utility model is opened from the end face of the plugging head and penetrates the side wall of the plugging head along the length direction. The third notch is opened from the end face of the plugging head and penetrates the side wall of the plugging head along the length direction, so that the third notch is not only opened on the side wall of the plugging head, but also the opening at its starting end occupies a part of the end face of the plugging head; so that the outlet of the instrument channel of the utility model is not only opened in the side direction of the endoscope tip structure, but also in the end face direction of the endoscope tip structure (that is, the extension direction of the instrument channel), so that the instrument can be adjusted in more positions and orientations as needed after passing through the instrument channel, thereby further improving the instrument operation space, so that the instrument operation space of the utility model is further improved, and further supports the use of more types of instruments, and further expands more detection and treatment items.

[0015] Preferably, the spiral stroke of the rotary cut slit of the endoscope tip structure of the utility model is periodic. The spiral stroke of the rotary cut slit of the utility model is periodic, which makes the bending arc of the endoscope tip structure of the utility model more natural and smooth when bending, and also makes it easier to form the rotary cut slit on the inner tube.

[0016] Preferably, the spiral stroke of the rotary cutting slit in each cycle of the endoscope tip structure of the utility model has at least one bending zone. The bending zone of the spiral stroke of the rotary cutting slit of the utility model, on the one hand, increases the bending arc of the endoscope tip structure of the utility model, so that the instrument can be adjusted in more positions and orientations as needed after passing through the instrument channel, thereby further increasing the instrument operation space, so that the instrument operation space of the utility model is further increased, and further supports the use of more types of instruments, and further expands more detection and treatment projects; on the other hand, the automatic reset function of the inner tube of the utility model after bending is enhanced, thereby further improving the automatic reset function of the endoscope tip structure of the utility model after bending.

[0017] Preferably, the bending zone of the tip structure of the endoscope of the present invention includes a first spiral segment, a second spiral segment, a third spiral segment, a first straight segment and a second straight segment, the end of the first spiral segment is connected to the starting end of the second spiral segment via the first straight segment, the end of the second spiral segment is connected to the starting end of the third spiral segment via the second straight segment, and the end of the third spiral segment is connected to the starting end of the first spiral segment of the next bending zone. The bending area of ​​this structure, on the one hand, facilitates the formation of the rotary cutting gap of the utility model by laser cutting; on the other hand, it enables the inner tube of the utility model to have good bending ability in both the length direction and the circumferential direction, further improving the bending ability of the tip structure of the endoscope of the utility model in the length direction and the circumferential direction; at the same time, by means of the coordinated arrangement of the first straight segment and the second straight segment with the first spiral segment, the second spiral segment and the third spiral segment, the inner tube of the utility model cannot be twisted, and the inner tube is effectively prevented from being twisted due to friction with the inner tube during the process of the instrument passing through the inner tube (the twisting of the inner tube will cause the inner tube to automatically reset due to the twisting after the instrument passes through the instrument channel, thereby causing the instrument to rotate spontaneously, thereby causing the instrument to lose control and cause harm to the human body).

[0018] Preferably, the third spiral section of the endoscope tip structure of the present invention is located on the extension line of the first spiral section, so as to further improve the bending ability of the endoscope tip structure of the present invention in the length direction and the circumferential direction and the naturalness and smoothness of the bending arc.

[0019] Preferably, the first straight line segment and the second straight line segment of the endoscope tip structure of the present invention have an angle α, which further effectively prevents the inner tube from being twisted due to friction with the inner tube when the instrument passes through the inner tube.

[0020] Preferably, the bending areas of the endoscope tip structure of the utility model are arranged at equal intervals, so as to further improve the bending ability of the endoscope tip structure of the utility model in the length direction and the circumferential direction and the naturalness and smoothness of the bending arc.

[0021] Preferably, the starting end of the rotary cutting slit of the endoscope tip structure of the present invention is a certain length E away from the first notch, so that the end of the inner tube of the present invention is integral, so as to guide and direct the instrument to pass through the instrument channel.

[0022] Preferably, the inner tube of the endoscope tip structure of the present invention forms a guide portion facing the side wall of the first notch, and the guide portion is inclined toward the first notch. The guide portion is used to guide and direct the instrument to pass through the instrument channel from the first notch through the expansion port.

[0023] Preferably, the main optical axis of the lens of the imaging assembly of the endoscope tip structure of the utility model has an acute angle β with the central axis of the outlet of the instrument channel. The lens is arranged toward the outlet of the instrument channel, ensuring that the instrument passing through the instrument channel is always within the visible angle of view of the lens, ensuring that the image process of the utility model using the instrument for detection and treatment can always be collected by the imaging assembly.

[0024] The endoscope provided by the utility model comprises any endoscope front end structure mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the tip structure of the endoscope of the utility model.

[0026] Figure 2 yes Figure 1 Exploded diagram of .

[0027] Figure 3 yes Figure 2 Another angle diagram of the structure.

[0028] Figure 4 is along Figure 1 Cross-sectional view along line A-A.

[0029] Figure 5 yes Figure 2 A further breakdown of the diagram.

[0030] Figure 6 It is a structural schematic diagram of the front end portion of the inner tube of the utility model.

[0031] Figure 7 yes Figure 6 Another angle diagram of the structure.

[0032] Figure 8 yes Figure 6 Magnified view of part B. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with specific implementation examples and the accompanying drawings, and the technical solutions of the utility model are explained. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are explained to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. Now, embodiments of the utility model are described with reference to the accompanying drawings, and similar component numbers in the accompanying drawings represent similar components.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] The endoscope of the present invention includes a bendable endoscope tip structure 100. The endoscope tip structure 100 of the present invention has a reasonable structure layout and better image acquisition effect and instrument operation space. Figure 1 - Figure 8 , the endoscope tip structure 100 of the utility model is further described in detail:

[0036] like Figure 1 - Figure 5As shown, the structure of the front end of the endoscope of the present invention includes an outer tube 1, an image module 2 and an inner tube 3. The outer tube 1 of the present invention is a hollow structure. The image module 2 of the present invention includes a plugging head 21, and the main function of the plugging head 21 is to serve as a shell for carrying and installing its internal components. The plugging head 21 of the present invention is equipped with an imaging component 22 for collecting and transmitting images and an illumination light source 23 for providing illumination; specifically, the imaging component 22 is mounted on a base 24, and the imaging component 22 and the illumination light source 23 are electrically connected to the control system at the operating handle end of the endoscope through a PCB board 25, and the electrical connection between the PCB board 25 and the control system of the endoscope can be achieved by using existing technology. The plugging head 21 of the utility model is fixedly connected with the port of the outer tube 3 to form an integrated structure of the insertion end 4; thereby forming the front end structure of the utility model. The integrated structure of the insertion end 4 effectively ensures the stability of the utility model when entering the human body and performing bending operations in the human body and protects its internal components, ensuring the smooth and safe detection and treatment. The plugging head 21 of the utility model is provided with an image window 211 facing the lens 221 of the imaging component 22; through the image window 211, the lens 221 in the plugging head 21 can collect image information outside the insertion end 4. The lighting source 23 of the utility model is symmetrically arranged on both sides of the lens 221 of the imaging component 22; the side-attached arrangement of the two lighting sources 23 provides effective lighting and fill light for the lens 221 to collect images, providing a strong guarantee for the imaging component 22 of the utility model to collect clear images. The inner tube 3 of the utility model is arranged inside the outer tube 1; the inner tube 3 of the utility model is a hollow structure, and the hollow structure of the inner tube 3 forms an instrument channel 31 for the instrument to pass through. The inner tube 3 of the utility model is provided with a first inclined notch 32 of a certain length D on the side wall along the length direction of the inner tube 3 from the end of the front end. The side wall of the insertion end 4 of the utility model is provided with an expansion port 41 opposite to the first notch 32, and the expansion port 41 is connected with the instrument channel through the first notch 4 so that the instrument can pass through the instrument channel. The utility model is provided with a rotary cut slit 33 in a spiral shape at the front end 3a of the inner tube 3 along the length direction of the inner tube 3 and around the circumference of the inner tube 3, and the rotary cut slit 33 forms a bendable bending structure on the front end 3a of the inner tube 3. As can be seen from the above, the utility model has the following positive and beneficial effects in practical application: (1) The utility model symmetrically arranges the illumination light source 23 on both sides of the lens 221 of the imaging component 22, thereby forming a side-mounted light source assembly structure. On the one hand, the visible area of ​​the lens 221 is within the illumination range of the illumination light source 23, so that the image acquisition effect is better; on the other hand, the side-mounted light source assembly structure makes the assembly process quick, convenient and simple, thereby improving the assembly efficiency and the qualified rate; thus, the layout of the image module of the utility model is reasonable, and has an excellent image acquisition effect.(2) The formation of the first notch 32 and the expansion opening 41 of the utility model, and the setting that the expansion opening 41 is connected with the instrument channel 31 through the first notch 32 to allow the instrument to pass through the instrument channel 31; make the outlet of the instrument channel 31 of the utility model form an open channel structure; therefore, when the instrument is in use, when the instrument finally reaches the outlet of the instrument channel 31 along the instrument channel 31, since the outlet of the instrument channel 31 of the utility model forms an open channel structure, the instrument reaching the outlet of the instrument channel 31 is less restricted and constrained, so that the position and orientation of the instrument can be adjusted as needed, so that the instrument reaching this place can pass through and cross the outlet, thereby greatly increasing the activity space of the instrument, thereby improving the instrument operation space, making the instrument operation space of the utility model better, and further supporting the use of more types of instruments, expanding more detection and treatment projects. (3) The rotary cut slit 33 of the front end portion 3a of the inner tube 3 of the utility model forms a bendable bending structure; on the one hand, the bendable bending structure is formed by the rotary cut slit 33, so that the front end portion 3a of the inner tube 3 of the utility model has a full range of bending and rotation functions centered on its axial direction, further improving the controllability of the front end portion structure 100 of the endoscope of the utility model and the activity space of the instrument; on the other hand, the inner tube 3 of the utility model has a certain automatic reset function after bending, so that the front end portion structure 100 of the endoscope of the utility model has a certain automatic reset function after bending.

[0037] like Figure 1 - Figure 6 As shown, preferably, a slot 212 is provided on the side wall of the plugging head 21 of the end portion structure 100 of the endoscope of the present invention. The port of the outer tube 1 of the present invention protrudes out a plugging portion 11 that matches the slot 212. The plugging portion 11 protruding from the outer tube 1 of the present invention is fixed in the slot 212 provided on the side wall of the plugging head 21 in a butt-jointed manner, so that the end of the outer tube 1 and the plugging head 21 form an insertion end 4 of an integrated structure. The plugging head 21 of the utility model is fixedly connected with the plug-in portion 11 protruding from the port of the outer tube 1 by docking and plugging through the card groove 212 on the side wall. On the one hand, the insertion end 4 formed by the two forms an integrated structure, and the structure is more firm and stable, ensuring that it will not fall off in the human body; on the other hand, the connection between the outer tube 1 and the plugging head 21 is smoothly transitioned, so that the entire appearance of the endoscope tip structure 100 of the utility model is smooth without any unevenness or gaps, thereby ensuring that the movement of the endoscope tip structure 100 of the utility model in the human body will not cause scratches to the human body, and at the same time, the movement of the endoscope tip structure 100 of the utility model in the human body is faster, smoother and smoother.

[0038] like Figure 1 - Figure 6As shown, preferably, the plug-in parts 11 of the outer tube 1 of the endoscope tip structure 100 of the utility model are symmetrically distributed on both sides of the outer tube 1, and a second notch 12 is formed between the two plug-in parts 11. The plugging head 21 of the utility model is provided with a third notch 213 facing one of the two second notches 12, and the second notch 12 is connected with the third notch 213 to form the expansion port 41. The expansion port 41 is formed by the docking and plugging of the second notch 12 on the outer tube 1 and the third notch 213 on the plugging head 21; the expansion port 41 is formed by effectively utilizing the docking and plugging structure of the outer tube 1 and the plugging head 21, so that the expansion port 41 is formed by assembly, which simplifies the manufacturing process and makes the assembly more efficient and quick; at the same time, the layout of the structure is optimized, and the structural layout is more reasonable and reliable.

[0039] like Figure 1 - Figure 6 As shown, preferably, the third notch 213 on the plugging head 21 of the end portion structure 100 of the endoscope of the present invention is opened from the end face 214 of the plugging head 21 and penetrates the side wall of the plugging head 21 along the length direction. The third notch 213 is opened from the end face 214 of the plugging head 21 and penetrates the side wall of the plugging head 21 along the length direction, so that the third notch 213 is not only opened on the side wall of the plugging head 21, but also the opening at the starting end occupies a part of the end face 214 of the plugging head 21; so that the outlet of the instrument channel 31 of the present invention is not only opened in the side direction of the endoscope end portion structure 100, but also in the end face direction of the endoscope end portion structure 100 (that is, the extension direction of the instrument channel), so that the instrument can be adjusted in more positions and orientations as needed after passing through the instrument channel, thereby further improving the instrument operation space, so that the instrument operation space of the present invention is further improved, and further supports the use of more types of instruments, and further expands more detection and treatment items.

[0040] like Figure 1 - Figure 8As shown, preferably, the spiral stroke of the rotary cut slit 33 of the endoscope tip structure 100 of the present invention is periodic. The spiral stroke of the rotary cut slit 33 of the present invention is periodic; so that when the endoscope tip structure 100 of the present invention is bent, the bending arc is more natural and smooth; and it is also more convenient to process and form the rotary cut slit on the inner tube. Specifically, the spiral stroke of the rotary cut slit 33 in each cycle of the endoscope tip structure 100 of the present invention has at least one bending area 34. The utility model has a bending area 34 through the spiral stroke of the rotary cut slit 33, which, on the one hand, increases the bending arc of the endoscope tip structure 100 of the utility model, so that the instrument can be adjusted to more positions and orientations as needed after passing through the instrument channel 31, thereby further increasing the instrument operation space, further increasing the instrument operation space of the utility model, further supporting the use of more types of instruments, and further expanding more detection and treatment projects; on the other hand, it enhances the automatic resetting function of the inner tube of the utility model after bending, thereby further improving the automatic resetting function of the endoscope tip structure 100 of the utility model after bending. Furthermore, the bending zone 34 of the tip structure 100 of the utility model endoscope includes a first spiral segment 341, a second spiral segment 342, a third spiral segment 343, a first straight segment 344 and a second straight segment 345, the end of the first spiral segment 341 is connected to the starting end of the second spiral segment 342 via the first straight segment 344, the end of the second spiral segment 342 is connected to the starting end of the third spiral segment 343 via the second straight segment 345, and the end of the third spiral segment 343 is connected to the starting end of the first spiral segment of the next bending zone. The bending area 34 of the structure, on the one hand, facilitates the formation of the rotary cut slit 33 of the utility model by laser cutting; on the other hand, it enables the inner tube 3 of the utility model to have good bending ability in both the length direction and the circumferential direction, further improving the bending ability of the endoscope tip structure 100 of the utility model in the length direction and the circumferential direction; at the same time, by means of the coordination of the first straight segment 344 and the second straight segment 345 with the first spiral segment 341, the second spiral segment 342 and the third spiral segment 343, the inner tube 3 of the utility model cannot be twisted, and effectively prevents the inner tube 3 from being twisted due to friction with the inner tube during the process of the instrument passing through the inner tube 3 (the twisting of the inner tube will cause the inner tube to automatically reset due to the twisting after the instrument passes through the instrument channel, thereby causing the instrument to rotate spontaneously, thereby causing the instrument to lose control and cause harm to the human body). More specifically, as Figure 1 - Figure 8 As shown, the third spiral section 343 of the endoscope tip structure 100 of the present invention is located on the extension line of the first spiral section 341. The bending ability of the endoscope tip structure 100 of the present invention in the longitudinal direction and the circumferential direction and the naturalness and smoothness of the bending arc are further improved.

[0041] like Figure 8 As shown, preferably, the first straight line segment 344 and the second straight line segment 345 in the same bending zone 34 of the endoscope tip structure 100 of the present invention have an angle α. This further effectively prevents the inner tube 3 from being twisted due to friction with the inner tube when the instrument passes through the inner tube. Specifically,

[0042] like Figure 1 - Figure 8 As shown, preferably, the bending areas 34 of the endoscope tip structure 100 of the present invention are arranged at equal intervals, so as to further improve the bending ability of the endoscope tip structure 100 of the present invention in the longitudinal direction and the circumferential direction and the naturalness and smoothness of the bending arc.

[0043] like Figure 6 As shown, preferably, the starting end 33a of the rotary cutting slit 33 of the endoscope front end structure 100 of the present invention is a certain length E away from the first notch 32. The end of the inner tube 3 of the present invention is integral, so as to guide and direct the instrument to pass through the instrument channel.

[0044] like Figure 1 - Figure 8 As shown, preferably, the inner tube 1 of the endoscope tip structure 100 of the present invention forms a guide portion 35 on the side wall facing the first notch 32, and the guide portion 53 is inclined toward the first notch 32. By means of the guide portion 35, the instrument is guided and guided to pass through the instrument channel 31 from the first notch 32 through the expansion port 41.

[0045] like Figure 1 - Figure 4 As shown, preferably, there is an acute angle β between the main optical axis L of the lens 221 of the imaging assembly 22 of the endoscope tip structure 100 of the present invention and the central axis M of the outlet of the instrument channel 31. The lens 221 is arranged toward the outlet of the instrument channel 31, ensuring that the instrument passing through the instrument channel 31 is always within the visual angle of the lens 221, ensuring that the image process of the instrument for detection and treatment in the present invention can always be collected by the imaging assembly.

[0046] Preferably, the illumination light source 23 of the present invention is an LED lamp or a light guide. The imaging component 22 of the present invention is a CCD module or a COMS module.

[0047] The working principle and operation method of the endoscope involved in the present invention are well known to those skilled in the art and will not be described in detail here.

[0048] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved. At the same time, what is disclosed above is only the preferred embodiment of the utility model, and of course it cannot be used to limit the scope of rights of the utility model. Therefore, equivalent changes made according to the scope of the patent application of the utility model are still within the scope covered by the utility model.

Claims

1. An endoscope tip structure, characterized in that: include: An outer tube having a hollow structure; An imaging module, the imaging module comprising a plugging head, the plugging head having an imaging component for collecting and transmitting images and an illumination light source for providing illumination built therein; the plugging head is fixedly connected to the port of the outer tube by docking to form an insertion end of an integrated structure; the plugging head is provided with an imaging window facing the lens of the imaging component, and the illumination light source is symmetrically arranged on both sides of the lens of the imaging component; An inner tube is arranged inside the outer tube, the inner tube is of a hollow structure, the hollow structure of the inner tube forms an instrument channel for instruments to pass through, the inner tube is provided with an inclined first notch of a certain length D on the side wall along the length direction of the inner tube from the end of the front end; an expansion opening is provided on the side wall of the insertion end directly opposite to the first notch, the expansion opening is connected with the instrument channel through the first notch so that the instrument can pass through the instrument channel; A rotary cut slit is opened at the front end of the inner tube in a spiral shape along the length direction of the inner tube and around the circumference of the inner tube, and the rotary cut slit forms a bendable bending structure at the front end of the inner tube.

2. The endoscope tip structure according to claim 1, characterized in that: A slot is provided on the side wall of the plugging head, and the port of the outer tube protrudes out to form a plug-in portion corresponding to the slot, and the plug-in portion is fixed in the slot in a butt-jointed manner to form the insertion end.

3. The endoscope tip structure according to claim 2, characterized in that: The plug-in parts are symmetrically distributed on both sides of the outer tube, and a second gap is formed between the two plug-in parts; the plugging head is provided with a third gap facing one of the two second gaps, and the second gap is connected with the third gap to form the expansion port.

4. The endoscope tip structure according to claim 3, characterized in that: The third notch is opened from the end surface of the plugging head and penetrates the side wall of the plugging head along the length direction.

5. The endoscope tip structure according to claim 1, wherein: The spiral stroke of the rotary cut slit is periodic.

6. The endoscope tip structure according to claim 5, characterized in that: The spiral course of the peeled slit in each cycle has at least one bending zone.

7. The endoscope tip structure according to claim 6, characterized in that: The bending zone includes a first spiral segment, a second spiral segment, a third spiral segment, a first straight segment and a second straight segment. The end of the first spiral segment is connected to the starting end of the second spiral segment via the first straight segment, the end of the second spiral segment is connected to the starting end of the third spiral segment via the second straight segment, and the end of the third spiral segment is connected to the starting end of the first spiral segment of the next bending zone.

8. The endoscope tip structure according to claim 7, characterized in that: The third spiral segment is located on the extension line of the first spiral segment.

9. The endoscope tip structure according to claim 7, characterized in that: An included angle α is formed between the first straight line segment and the second straight line segment.

10. The endoscope tip structure according to claim 6, wherein: The bending areas are arranged at equal intervals.

11. The endoscope tip structure according to claim 1, characterized in that: The starting end of the rotary cut slit is a certain length E away from the first notch.

12. The endoscope tip structure according to claim 1, wherein: A guide portion is formed on a side wall of the inner tube facing the first notch, and the guide portion is inclined toward the first notch.

13. The endoscope tip structure according to claim 1, wherein: There is an acute angle β between the main optical axis of the lens of the imaging assembly and the central axis of the outlet of the instrument channel.

14. An endoscope, characterized in that: It comprises the endoscope tip structure as claimed in any one of claims 1 to 13.

Images