Front end tip, insertion part and endoscope

Abstract

The invention provides a front end tip, an insertion part and an endoscope, and relates to the technical field of endoscopes, the front end tip comprises a base body, the near end of the base body is used for being connected to the far end of the insertion part, and the far end of the base body is of a spherical surface structure so as to guide the insertion part to enter a target position; wherein the base body at least has light transmission in the area corresponding to the image acquisition module of the insertion part, and the base body is made of biodegradable materials.Compared with the prior art, the endoscope insertion part has the advantages that the smoothness problem when the endoscope insertion part enters a body cavity is solved, the tissue scratching risk is reduced, and the endoscope insertion part can be used for endoscope insertion. And meanwhile, the installation of the instrument tube and the good observation effect of the lens are not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to a front end tip, an insertion portion and an endoscope. Background Art

[0002] Endoscopes are widely used in the examination and surgery of the digestive tract, respiratory tract and urogenital system. Different application scenarios require different types of endoscopes. For example, gastroscopes and colonoscopes are used for digestive tract examinations, bronchoscopes are used for respiratory tract examinations, and cystoscopes are used for urogenital system examinations. The front end of the endoscope includes an insertion part, and the distal end is provided with a lens for real-time acquisition of images in the cavity and transmission to a display device for medical staff to observe and operate.

[0003] At present, the front end of the endoscope generally adopts a cylindrical structure to facilitate smooth insertion into the body cavity for inspection or treatment. However, this structure is prone to direct contact with the inner wall of the body cavity during advancement, especially in curved or narrow channels, which may cause tissue scratches or even damage, affecting the safety and comfort of patients.

[0004] Of course, in order to reduce damage to tissues, some endoscopes use an integrated round head design to make the front end smoother. However, this design still has certain limitations during use. For example, although the round head structure reduces the risk of scratches, it will affect the installation of the instrument tube, and where the instrument tube passes through the outer wall of the round head structure, the edge of the outer wall generally forms a structure similar to a blade, which can easily cause damage to the passing tissue or catheter. In addition, the round head structure restricts the installation position of the lens, which may affect the imaging angle of view, thereby reducing the observation effect. Summary of the invention

[0005] In order to solve the problem of smoothness when the insertion part of the endoscope enters the body cavity and reduce the risk of tissue scratching, while not affecting the installation of the instrument tube and the good observation effect of the lens, the present application provides a front end tip, an insertion part and an endoscope.

[0006] In a first aspect, the present application provides a front-end terminal, which adopts the following technical solution: A front end tip is applied to an endoscope, the endoscope comprises an insertion portion, the front end tip comprises a base, the proximal end of the base is used to connect to the distal end of the insertion portion, the distal end of the base is a spherical structure to guide the insertion portion into a target position; wherein, The substrate is light-transmissive at least in a region corresponding to the image acquisition module of the insertion portion, and the substrate is made of a biodegradable material.

[0007] Preferably, a connecting portion is provided at the proximal end of the base body, and the connecting portion and the instrument tube are plug-fitted to each other.

[0008] Preferably, the connecting portion is a tubular structure, a supporting portion is provided at the proximal end of the connecting portion, a conical deformation portion is provided at the rear end of the supporting portion, and the supporting portion is configured with a first state and a second state; wherein, When the supporting portion is in the first state, the supporting portion is supported on the inner wall of the connecting portion; When the supporting portion is in the second state, the conical portion of the deformation portion is flipped to a reverse state by an external force, and the supporting portion is separated from the inner wall of the connecting portion.

[0009] Preferably, at least one inner groove is formed on the peripheral wall of the connecting portion to reduce at least a portion of the thickness of the peripheral wall of the connecting portion.

[0010] Preferably, the base comprises a fitting portion and a guiding portion, a hollow chamber is formed between the fitting portion and the guiding portion, the fitting portion is used to fit to the distal end of the insertion portion, and the fitting portion is provided with an opening facing the image acquisition module.

[0011] Preferably, the outer wall of the substrate is covered with an outer skin layer, the outer skin layer is made of a biodegradable material, and the degradation rate of the outer skin layer is lower than the degradation rate of the substrate.

[0012] Preferably, a circumferential skirt extends from the proximal end of the outer skin layer, and the skirt is sleeved and fitted onto the outer wall of the distal end of the insertion portion; And / or, a weakening layer is provided at the opening position of the fitting portion, the weakening layer is used to be fitted to the image acquisition module, and the weakening layer is made of a biodegradable material.

[0013] Preferably, the guide portion is provided with a deformation rib, and when the deformation rib is in an initial state, two ends of the deformation rib will automatically expand, thereby collapsing the guide portion; And / or, the inner groove is located on the inner wall of the connecting portion; And / or, an indicator mark is provided on the outer side of the substrate.

[0014] In a second aspect, the present application provides an insertion portion, which adopts the following technical solution: An insertion portion comprises the front end tip described in the above scheme.

[0015] In a third aspect, the present application provides an endoscope, which adopts the following technical solution: An endoscope comprises the insertion portion described in the above scheme.

[0016] The present invention has the following advantages and beneficial effects: (1) The front end provided in this application optimizes the smoothness of insertion through a spherical structure, so that the endoscope can smoothly transition when entering the body cavity, reduce direct contact with the body cavity wall, reduce the risk of tissue scratches, and improve patient comfort. At the same time, the matrix is ​​light-transmissive in the area corresponding to the image acquisition module, ensuring that the image acquisition module can normally obtain clear images and avoid affecting the observation effect due to structural obstruction. In addition, the matrix is ​​made of biodegradable material, which will not affect the normal use of the instrument tube after gradually degrading in the body, ensuring the continuity and stability of the surgical process. The matrix material usually has a certain degree of flexibility, so that it will not form a rigid contact with the body cavity during insertion, further reducing the risk of tissue damage, and improving patient safety and the applicability of the endoscope.

[0017] (2) The present application uses a conical structure of the deformation part, which can be flipped to the reverse state under negative pressure or external force, so that the support part is separated from the inner wall of the connection part, thereby reducing the support force of the connection part on the instrument tube. In this way, it can be separated from the base under the action of a relatively small external force, avoiding the need to apply a large impact force to separate due to the connection part being too stable, thereby preventing the base from impacting the inner wall of the body cavity at high speed and reducing damage to the patient's tissue. In addition, the tubular connection part ensures stable plug-in cooperation with the instrument tube and improves the reliability of the connection, while the dual-state design of the support part (the first state is supported on the inner wall of the connection part, and the second state is separated from the inner wall of the connection part) makes disassembly more controllable, improving the safety of the structure and the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram intended to show the overall structure of an endoscope.

[0020] Figure 2 It is a schematic diagram intended to show the overall structure of the lens mount and base.

[0021] Figure 3 This is a half-section view intended to show the lens mount and base.

[0022] Figure 4 It is a schematic diagram intended to show the state of the negative pressure suction support part and the deformation part after deformation.

[0023] Figure 5 It is a schematic diagram for showing the structure that the inner groove is located on the outer peripheral wall of the connecting part.

[0024] Figure 6It is a schematic diagram of the structure intended to show the deformed ribs.

[0025] Figure 7 It is a schematic diagram to show the state after the deformed ribs drive the matrix to become deflated.

[0026] Figure 8 This is a schematic diagram to show the structure of the skirt being raised so that it can fit snugly on the lens mount.

[0027] The markings in the figure are: 1. base; 11. fitting part; 110. opening; 111. weak layer; 112. hollow chamber; 12. guide part; 121. deformed rib; 13. outer skin layer; 131. skirt; 3. connecting part; 30. inner groove; 31. supporting part; 311. deformed part; 4. indicator mark; 5. handle; 51. insertion part; 511. instrument tube; 52. lens mount; 521. image acquisition module; P, deformation direction of the deformed ribs; S, negative pressure suction direction. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0029] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0030] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0031] An endoscope is usually composed of a slender tubular insertion portion 51 and a controllable operating handle 5, wherein the insertion portion 51 is used to penetrate into the patient's body cavity for inspection or treatment, and the operating handle 5 is used to control the movement state of the insertion portion 51. The operator can accurately adjust the bending angle and direction of the front end of the insertion portion 51 by adjusting the control elements such as the lever or dial on the handle 5, so that it can smoothly adapt to the complex shape of the body cavity and achieve flexible operation. In the actual application of the endoscope, medical staff usually need to insert it into the patient's body cavity to inspect or treat the digestive tract, respiratory tract or urogenital system.

[0032] However, it is found in clinical operation that the front end structure of the existing endoscope insertion part 51 still has certain limitations. Although the traditional cylindrical front end is easy to push, it is easy to produce large contact friction with the inner wall of the cavity when entering a curved or narrow channel, which may cause tissue scratches or even damage, thereby affecting the comfort and safety of the patient.

[0033] To reduce this adverse effect, some designs use an integrated round head structure to make the front end smoother to reduce the risk of scratches. However, in actual use, this structure still has the following problems: First, although the round head structure reduces friction, it will limit the installation method of the instrument tube 511, making it difficult to properly pass through, thereby affecting the operating accuracy of the surgical instrument; second, when the instrument tube 511 passes through the outer wall of the round head, the edge of the outer wall is likely to form a structure similar to a blade, which may cause additional damage to the tissue or catheter.

[0034] Combine the following Figures 1 to 8 A front end tip, an insertion portion, and an endoscope provided in an embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0035] A front end tip is applied to the distal end of the insertion part 51 of the endoscope. The insertion part 51 is composed of a lens holder 52, an active bending section, a passive bending section, etc., and an instrument tube 511 is installed inside to ensure that the endoscope can be smoothly inserted into the body cavity and complete related operations during the inspection and treatment process. The base 1 is installed at the distal end of the lens holder 52 to optimize the front end structure and reduce tissue damage.

[0036] The lens mount 52 is located at the front end of the insertion part 51, and is mainly used to fix the image acquisition module 521, including the lens and light source assembly, and is connected to the base 1. The lens mount 52 is usually made of high-strength materials, such as medical stainless steel, titanium alloy or high-temperature resistant engineering plastics (such as PEEK) to ensure structural stability and corrosion resistance. The shape design of the lens mount 52 needs to smoothly transition with the base 1 to avoid forming sharp edges and corners, so as to reduce the stimulation to the body cavity tissue during the insertion process.

[0037] The active bending section is located behind the lens holder 52 and is composed of multiple movable units. Its bending direction is controlled by a wire pulling mechanism, so that the operator can accurately adjust the angle of the insertion portion 51 to meet the needs of different body cavity channels. This part can be made of nickel-titanium alloy or highly flexible stainless steel to provide appropriate support and elasticity, and can be coated with a low-friction coating on the outer layer to reduce the insertion force and reduce friction on surrounding tissues.

[0038] The passive bending section is used to provide flexible buffering so that the insertion part 51 can conform to the shape of the body cavity and avoid causing additional pressure on the tissue. This part is usually made of highly elastic materials such as silicone-coated metal mesh or polyurethane to ensure that it has sufficient softness and can maintain appropriate support force to prevent the insertion part 51 from being excessively bent during the advancement process, thereby affecting the operational stability.

[0039] The instrument tube 511 extends along the interior of the insertion portion 51 and is used to transport various surgical instruments, such as biopsy forceps, hemostatic clips, or catheters.

[0040] Reference Figure 2 and Figure 3 As shown, the front end includes a base 1, which is mounted at the distal end of the lens mount 52, and the distal end of the base 1 is a spherical structure to guide the insertion portion 51 to smoothly enter the target position, while reducing tissue friction and scratches during advancement. The base 1 is light-transmissive at least in the area corresponding to the image acquisition module 521 to ensure that the light source can be effectively irradiated and the field of view of the lens is not blocked.

[0041] In a preferred embodiment, the base 1 is in the shape of a bullet head as a whole, and its front end adopts a smooth transition structure to reduce the resistance during insertion, so that the insertion part 51 can enter the body cavity more easily. This shape helps to reduce friction and stimulation to the body cavity tissue, thereby reducing the patient's discomfort and improving the smoothness of insertion.

[0042] In a preferred embodiment, the substrate 1 is made of a transparent material as a whole. Of course, the premise is that the transparent material is also made of a biodegradable material to ensure that it can be degraded in the biological environment after use to avoid long-term residue. At the same time, in order to ensure the stability and durability of the substrate 1 when inserted into the body cavity, it needs to have a certain mechanical strength to prevent the use effect from being affected by rupture or deformation due to force.

[0043] Optionally, biodegradable transparent materials suitable for the substrate 1 may include polylactic acid (PLA)-based transparent composite materials, polyhydroxyalkanoates (PHA), polyglycolic acid (PGA) or modified chitosan, etc. These materials not only have good transparency, but also can be gradually degraded under physiological conditions, which meets the biosafety requirements of medical devices. In addition, in order to enhance the mechanical properties of the substrate 1, nanocellulose can be added to the material or a multi-layer composite structure can be adopted to improve its impact resistance and tear resistance while still maintaining good optical transmittance. According to specific application requirements, the substrate 1 can be designed as a fully transparent structure, or a light-transmitting window can be set only in the image acquisition area to enhance the overall structural strength while ensuring optical performance.

[0044] Preferably, the degradable transparent material used for the substrate 1 should be degraded within 1 hour to 1 day to ensure that it degrades quickly after the medical operation is completed and does not cause long-term effects on the body cavity, while maintaining sufficient strength during the operation. Materials suitable for this requirement include: polyglycolic acid (PGA), modified chitosan, polylactic acid-glycolic acid copolymer (PLGA), polyvinyl alcohol (PVA) or its modified copolymers, etc.

[0045] It should be noted that the materials contained in the front end are all degradable materials.

[0046] according to Figure 3 and Figure 4 As shown, in order to facilitate the connection of the base 1, a connecting portion 3 is integrally formed at the proximal end of the base 1, and the connecting portion 3 is plugged into and matched with the instrument tube 511. The connecting portion 3 is a tubular structure, and a supporting portion 31 is provided at its proximal end, and a conical deformation portion 311 is configured at the tail end of the supporting portion 31. The supporting portion 31 has a first state and a second state, wherein: In the first state, the support portion 31 is coaxially supported on the inner wall of the connecting portion 3 , ensuring that the base body 1 is firmly fixed in the instrument tube 511 .

[0047] In the second state, under the action of external force, the conical part of the deformation part 311 turns over to the reverse state, and the support part 31 is separated from the inner wall of the connecting part 3. At this time, the base body 1 can be separated from the front end of the insertion part 51.

[0048] As an optional embodiment, the connecting portion 3 is a solid columnar structure.

[0049] Preferably, since the instrument tube 511 can be suctioned under negative pressure, the detachment operation of the substrate 1 can be achieved by the negative pressure effect. Figure 4As shown, when negative pressure is applied, the conical structure of the deformation portion 311 flips, and after flipping back, the support portion 31 will be separated from the inner wall of the connecting portion 3, thereby reducing the fixing force between the base 1 and the instrument tube 511, and facilitating the separation of the base 1. Since the negative pressure can be precisely controlled, it is avoided that a large impact force needs to be applied, ensuring that no unnecessary damage is caused to the body cavity or surrounding tissues when the base 1 is removed. Otherwise, the negative pressure is directly used to recoil the connecting portion 3 and the base 1 outward, and the negative pressure impact force is difficult to control, which is easy to cause damage to the inner wall of the body cavity.

[0050] This design allows the base 1 at the front end of the endoscope to be quickly detached when needed, thereby reducing the impact force on the inner wall of the body cavity and optimizing the safety and comfort of the patient. In addition, using negative pressure as a control method also reduces the reliance on external mechanical operations, making the operation simpler and more accurate, and ensuring the stability and reliability of the endoscope equipment.

[0051] The conical structure design of the deformation part 311 can effectively receive the negative pressure suction and realize the separation of the support part 31 and the connecting part 3. The design of the conical part not only optimizes the connection between the instrument tube 511 and the connecting part 3, but also makes the deformation process under the negative pressure more stable and efficient. When the external negative pressure suction is applied to the conical deformation part 311, the shape of the conical structure can fully guide the suction generated by the negative pressure, so that the deformation part 311 flips in the opposite direction. This process allows the support part 31 to detach from the inner wall of the connecting part 3, thereby realizing the rapid detachment of the base 1 later.

[0052] In other different implementations, the detachment operation of the base body 1 can also be achieved by other means, such as using a pull wire or a push rod or a mechanism such as an instrument push.

[0053] Reference Figure 4 and Figure 5 As shown, at least one inner groove 30 is provided along the circumferential direction on the outer wall or the inner wall of the connecting portion 3 to reduce at least part of the thickness of the circumferential wall of the connecting portion 3. Specifically, the cross-sectional shape of the inner groove 30 is arc-shaped and gradually deepens along the side away from the base 1, so that the connecting portion 3 can be easily inserted into the instrument tube 511. At the same time, after the supporting portion 31 is separated from the inner wall of the connecting portion 3, the supporting force of the connecting portion 3 on the instrument tube 511 is reduced.

[0054] In other embodiments, the cross-sectional shape of the inner groove 30 may be square, trapezoidal or other shapes suitable for optimizing force. For example, a square cross-sectional structure can provide a more uniform thickness reduction effect, so that the connecting portion 3 can still maintain a certain structural strength when subjected to force, while a trapezoidal cross-sectional structure can provide better deformation adaptability near the distal end, which helps to reduce friction resistance during insertion.

[0055] In addition, in order to further enhance the compliance of the connection part 3 when inserted into the instrument tube 511, the inner wall of the connection part 3 can also adopt a gradient thickness design, that is, the thickness is kept larger at the end close to the base 1 to provide a stable support, while the end away from the base 1 gradually becomes thinner to reduce the insertion force and improve the smoothness of separation. This design can avoid the difficulty of insertion caused by excessive rigidity, and at the same time ensure that the base 1 can be smoothly separated from the insertion part 51 when negative pressure or mechanical pulling force is applied.

[0056] In another embodiment, micro-bumps or annular grooves may be provided on the outer wall surface of the connection part 3 to increase the friction between the connection part 3 and the instrument tube 511, thereby ensuring the stability of the base 1 before it is detached, and reducing the force required for separation by reducing the support contact area when detaching. The application of this structure can effectively improve the fixation reliability of the base 1 and the controllability of detachment, making it more suitable for different types of endoscope operation environments.

[0057] Reference Figure 3 and Figure 4 As shown, the base 1 includes a fitting portion 11 and a guide portion 12, and a hollow chamber 112 is formed between the fitting portion 11 and the guide portion 12. The hollow chamber 112 can reduce the weight of the base 1 and facilitate light transmission, so that the image acquisition module 521 can collect image information. The fitting portion 11 is used to fit to the distal end of the insertion portion 51. After the fitting portion 11 fits to the distal end of the lens holder 52, the connectivity can be increased to prevent the base 1 from moving in the radial direction. An opening 110 facing the image acquisition module 521 is provided on the fitting portion 11 to ensure that light can fully pass through the base 1 and enter the image acquisition module 521, thereby improving the imaging quality.

[0058] In an optimized embodiment, the inner shape of the hollow chamber 112 can be a sphere, an ellipsoid or other curved surface structure to further reduce the weight of the base 1 and avoid the weakening of the strength of the base 1 caused by the chamber structure. In addition, in order to enhance the fixing effect of the fitting portion 11, the fitting portion 11 can adopt an elastic structure, for example, a flexible flange is provided on the periphery of the fitting portion 11, so that it provides a certain elastic pressure when fitting with the distal end of the lens holder 52, ensuring a stable connection and reducing the risk of loosening under the action of external force.

[0059] In another embodiment, the inner wall of the fitting portion 11 may be provided with micro friction textures or micro bumps to increase the friction between the fitting portion 11 and the distal end of the lens holder 52 and improve the fixing stability. The surface roughness of these structures may be processed with micron-level precision to optimize the structural connection performance without affecting the optical imaging effect.

[0060] In another embodiment, in order to adapt to different types of endoscopes, the material of the fitting portion 11 can be a flexible polymer or a material with shape memory properties, so that it can automatically adjust its shape when connected to the lens holder 52 to provide better fit.

[0061] Reference Figure 3 and Figure 6 As shown, the outer wall of the base 1 is covered with an outer skin layer 13, which is made of a biodegradable material, and the degradation rate of the outer skin layer 13 is lower than that of the base 1. Due to the low degradation rate of the outer skin layer 13, during the insertion of the insertion portion 51 into the body cavity, the outer skin layer 13 can protect the base 1, preventing the base 1 from dissolving prematurely during the insertion process and affecting the structural stability, while also reducing the friction during insertion and improving the smoothness of insertion.

[0062] When the substrate 1 is detached from the lens holder 52, the fitting portion 11 of the substrate 1 will be exposed. At this time, the degradation rate of the substrate 1 is relatively fast, and it degrades rapidly in the body cavity environment, so that the substrate 1 can be dissolved and discharged from the body in a relatively short time. Based on this characteristic, the substrate 1 can be made of a biodegradable material with a relatively high supporting strength, such as polylactic acid (PLA), polyglycolic acid (PGA) or its copolymer, to ensure that it has sufficient mechanical strength during use, is not easily deformed or broken during insertion, and is also convenient for material selection and optimized design.

[0063] After the substrate 1 is degraded, the inner and outer surfaces of the outer skin layer 13 are exposed to the body cavity solution, thereby accelerating the degradation process and finally dissolving it completely. Preferably, the outer skin layer 13 can be made of a biomaterial with adjustable degradation rate, such as a modified polylactic acid with hydrolysis delay properties on the surface, or a natural polymer coating that reduces the degradation rate by increasing the degree of cross-linking.

[0064] In a further optimized embodiment, the thickness of the outer skin layer 13 can be adjusted according to the expected use time, for example, it can be controlled between 10-50 microns to ensure that it can effectively protect the substrate 1 during the insertion process, but can be quickly degraded after the substrate 1 is detached. In addition, the outer skin layer 13 can contain hydrophilic additives, such as polyethylene glycol (PEG) or hyaluronic acid, to maintain a certain lubricity in the early stage of degradation, reduce tissue friction, and improve patient comfort.

[0065] Reference Figure 3 As shown, a circumferential skirt 131 extends from the proximal end of the outer skin layer 13, and the skirt 131 is sleeved and fits onto the outer wall of the distal end of the insertion portion 51. The skirt 131 can not only provide radial support for the base 1, thereby effectively preventing the base 1 from loosening or falling off during the insertion process, but also provide a certain buffering effect when the insertion portion 51 is pushed forward, thereby reducing the friction between the base 1 and the body cavity tissue, and improving the smoothness and safety of the insertion.

[0066] Of course, the material of the outer skin layer 13 can be the same as that of the skirt 131 to facilitate manufacturing, improve production efficiency, and ensure material compatibility. Preferably, both the outer skin layer 13 and the skirt 131 can be made of biodegradable materials with good elasticity, such as polycaprolactone (PCL), polylactic acid (PLA) or hyaluronic acid-based hydrogel, etc., to ensure that they provide good mechanical strength during insertion and gradually degrade in the body cavity environment to avoid foreign matter residue.

[0067] As an optional embodiment, a weak layer 111 is integrally formed at the opening 110 of the fitting portion 11. The weak layer 111 is used to fit to the front surface of the image acquisition module 521 to prevent the lens surface from fogging due to temperature difference or humidity change, while maintaining a high degree of light transmittance to avoid affecting the imaging quality. The design of the weak layer 111 can ensure that it provides necessary protection during the insertion process, but can quickly dissolve after being separated from the lens holder 52, allowing the body cavity fluid to enter the hollow chamber 112, accelerating the degradation process of the substrate 1, and ensuring that the substrate 1 can be completely dissolved within a preset time.

[0068] Reference Figure 4 and Figure 6 As shown, the guide portion 12 is integrally formed with a deformable rib 121. In the initial state, the two ends of the deformable rib 121 are stretched outward, thereby shrinking the guide portion 12 to maintain a certain shape. The deformation direction P of the deformable rib is as shown in FIG. Figure 6 When the base 1 is separated from the front end of the lens holder 52, the two ends of the deformable rib 121 are stretched and deformed under the action of its own elastic force, so that the volume of the guide part 12 is reduced, thereby reducing the occupation of the body cavity space by the base 1, ensuring the normal operation of the image acquisition module 521. In a specific embodiment, the cross-sectional shape of the deformable rib 121 can be designed as a wedge-shaped, arc-shaped or trapezoidal structure.

[0069] In addition, the arrangement of the deformable ribs 121 can be distributed along the plane where the diameter is located, so that the collapse direction of the base 1 tends to be flattened. As a preferred embodiment, the deformable ribs 121 are arranged in parallel directly below the image acquisition module 521, and one is arranged to avoid affecting the field of view acquisition of the image acquisition module 521. At the same time, in order to further reduce the impact of occlusion, the cross-section of the deformable rib 121 can be designed to be streamlined.

[0070] As an optional embodiment, an indicator mark 4 is provided on the outer side of the substrate 1. The indicator mark 4 can be made of a dot-shaped or strip-shaped colored material. The colored material is preferably embedded in the substrate 1, and a biodegradable material is required to be selected, so as to facilitate positioning the opening 110 of the fitting portion 11 facing the image acquisition module 521.

[0071] In addition, in some application scenarios, the indicator mark 4 can also adopt a micro-protrusion structure, that is, a touchable mark is formed by locally increasing the thickness of the surface of the substrate 1, so that the operator can judge the installation direction of the substrate 1 by touch without visual confirmation, thereby improving the convenience of installation.

[0072] The present invention provides an insertion portion 51, including a lens mount 52, wherein a base 1 is mounted at the distal end of the lens mount 52, so that the insertion portion 51 has good adaptability during insertion into a body cavity and improves operational stability.

[0073] The present invention provides an endoscope, comprising a handle 5 and an insertion portion 51 of the above-mentioned solution, wherein a control mechanism is provided inside the handle 5, and the bending angle of the insertion portion 51 can be adjusted by a lever, a knob or a joystick, thereby achieving precise guide control. The lens holder 52 at the distal end of the insertion portion 51 can cooperate with the base 1 to make the insertion process smoother and avoid damage to the patient's body cavity. In addition, the lens holder 52 can be integrated with a high-resolution camera assembly and a lighting device to ensure that the operator can obtain a clear image of the inside of the body cavity, so as to improve the accuracy and safety of diagnosis and treatment.

[0074] It should be noted that the endoscope referred to in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0075] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0076] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front end tip, applied to an endoscope, the endoscope comprising an insertion portion (51), characterized in that: The front end head comprises a base body (1), the proximal end of the base body (1) is used to be connected to the distal end of the insertion part (51), and the distal end of the base body (1) is in a spherical structure to guide the insertion part (51) into a target position; The substrate (1) is light-transmissive at least in a region corresponding to the image acquisition module (521) of the insertion portion (51), and the substrate (1) is made of a biodegradable material.

2. A front end tip according to claim 1, characterized in that: A connecting portion (3) is provided at the proximal end of the base body (1), and the connecting portion (3) and the instrument tube (511) are plug-fitted to each other.

3. A front end tip according to claim 2, characterized in that: The connecting portion (3) is in a tubular structure, a supporting portion (31) is provided at the proximal end of the connecting portion (3), a tail end of the supporting portion (31) has a conical deformation portion (311), and the supporting portion (31) is configured with a first state and a second state; Wherein, when the supporting portion (31) is in the first state, the supporting portion (31) is supported on the inner wall of the connecting portion (3); When the support portion (31) is in the second state, the conical portion of the deformation portion (311) is flipped to a reverse state under the action of an external force, and at the same time, the support portion (31) is separated from the inner wall of the connection portion (3).

4. A front end tip according to claim 3, characterized in that: The peripheral wall of the connecting portion (3) is provided with at least one inner groove (30) to reduce at least a portion of the thickness of the peripheral wall of the connecting portion (3).

5. A front end tip according to claim 4, characterized in that: The base (1) comprises a fitting portion (11) and a guiding portion (12), wherein a hollow chamber (112) is formed between the fitting portion (11) and the guiding portion (12), and the fitting portion (11) is used to fit to the distal end of the insertion portion (51), and an opening (110) facing the image acquisition module (521) is provided on the fitting portion (11).

6. A front end tip according to claim 5, characterized in that: The outer wall of the substrate (1) is covered with an outer skin layer (13), the outer skin layer (13) is made of a biodegradable material, and the degradation rate of the outer skin layer (13) is lower than the degradation rate of the substrate (1).

7. A front end tip according to claim 6, characterized in that: A circumferential skirt (131) extends from the proximal end of the outer skin layer (13), and the skirt (131) is sleeved and fitted onto the outer wall of the distal end of the insertion portion (51); And / or, a weakening layer (111) is provided at the opening (110) of the bonding portion (11), the weakening layer (111) being used to be bonded to the image acquisition module (521), and the weakening layer (111) is made of a biodegradable material.

8. A front end tip according to claim 5, characterized in that: The guide portion (12) is provided with a deformation rib (121), and when the deformation rib (121) is in an initial state, two ends of the deformation rib (121) will automatically expand, thereby collapsing the guide portion (12); And / or, the inner groove (30) is located on the inner wall of the connecting portion (3); And / or, an indicator mark (4) is provided on the outer side of the base body (1).

9. An insertion portion, characterized in that: Comprising a front end tip as described in any one of claims 1-8.

10. An endoscope, characterized in that: Comprising the insert portion (51) as claimed in claim 9.

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