Front end component and endoscope

Abstract

The present invention provides a front-end component and an endoscope, which relate to the field of medical devices. The present invention comprises a front-end housing; a camera module, which is arranged in the front-end housing and used to collect images, and the camera module has a preset optimal focus position; an illumination light source, which is arranged in the front-end housing and used for illumination; and a marking light source, which is arranged in the front-end housing and used to form a marking light spot in the image collection area of ​​the camera module; wherein the image collected by the camera module has an indication mark for indicating the optical axis of the camera module, and the optical axis of the marking light source intersects with the optical axis of the camera module, and the intersection position is located at the optimal focus position. Compared with the prior art, the present invention has the advantage of guiding the doctor to adjust the position of the front-end housing through the cooperation of the indication mark and the marking light spot, so that the target is at the optimal focus position of the camera module.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a front-end component and an endoscope. Background Art

[0002] Lesions are abnormal changes that form in tissues in the body, and may include tumors, polyps, kidney stones, etc. These lesions vary in size and shape, which affects doctors' diagnosis and treatment decisions. Endoscopy is a common method that can directly observe lesions and provide important information for subsequent treatment. Accurately assessing the size of the lesion helps to develop appropriate treatment plans, such as choosing the appropriate removal or resection method.

[0003] During endoscopic surgery, doctors adjust the position of the endoscope to obtain images of lesions and judge the location of the lesions based on these images. However, the complexity of the internal environment often leads to limited image clarity, and the doctor's operating experience has a direct impact on image quality. Due to the different experience levels of different doctors, the image clarity obtained when adjusting the endoscope will also vary. This experience-based adjustment method can easily lead to a decrease in image quality, thereby affecting the accurate assessment of lesions. This inaccurate judgment may lead to inappropriate treatment plans, which in turn have a negative impact on the patient's recovery. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present application provides a front end component and an endoscope.

[0005] In a first aspect, the present application provides a front-end component, which adopts the following technical solution:

[0006] A front end component, applied to an endoscope, comprising:

[0007] Front end housing;

[0008] A camera module, disposed on the front housing, for capturing images, wherein the camera module has a preset optimal focus position;

[0009] an illumination light source, disposed in the front end housing, for illumination; and

[0010] A marking light source, disposed in the front end housing, for forming a marking light spot in the image acquisition area of ​​the camera module;

[0011] Among them, the image captured by the camera module has an indication mark for indicating the optical axis of the camera module, the optical axis of the mark light source intersects with the optical axis of the camera module, and the intersection position is located at the optimal focus position.

[0012] Preferably, the indicator mark is arranged on the lens of the camera module, the optical axis of the camera module passes through the center of the indicator mark, and the indicator mark is used to block at least part of the light band.

[0013] Preferably, the light emitted by the marking light source is parallel light;

[0014] And / or, the marking light spot is of irregular shape;

[0015] And / or, the marking light spot is in the shape of an arrow;

[0016] And / or, the marking light spot has a shape different from other parts on the side facing toward or away from the optical axis of the camera module.

[0017] Preferably, the marking light source includes a light emitting element and a shielding element, the shielding element includes a light-transmitting portion, and the light emitted by the light emitting element can be transmitted through the light-transmitting portion to irradiate into the image acquisition area of ​​the camera module.

[0018] Preferably, the shielding member includes an indicating portion, the indicating portion is light-transmitting, the indicating portion is located on a side of the light-transmitting portion close to the camera module, and the shape of the indicating portion is different from that of the light-transmitting portion;

[0019] And / or, the light-transmitting portion is of irregular shape;

[0020] And / or, the light-transmitting portion is arrow-shaped, and the tip of the light-transmitting portion is facing the camera module side.

[0021] Preferably, the indicating portion and the light-transmitting portion are arranged at intervals on the shielding member;

[0022] Alternatively, the light-transmitting portion overlaps with a partial area of ​​the indicating portion.

[0023] Preferably, the optical axis of the illumination light source intersects with the optical axis of the camera module, and the intersection position is located outside the optimal focus position of the camera module;

[0024] Alternatively, the optical axis of the illumination light source is parallel to the optical axis of the camera module.

[0025] In a second aspect, the present application provides an endoscope, which adopts the following technical solution:

[0026] An endoscope comprises a front end component described in the above technical solution.

[0027] The present invention has the following advantages and beneficial effects:

[0028] When photographing the area where the target is located, first place the front end housing into the body and adjust its position so that the indicator mark in the image captured by the camera module is located at the center of the target. Then, by adjusting the distance between the front end housing and the target, the indicator mark and the marking light spot are overlapped. Since the position where the indicator mark and the marking light spot overlap is at the best focus position, the target will also be at the best focus position of the camera module at this time, so that the clearest image can be obtained.

[0029] Through the effective coordination of the indicator mark and the marking light spot, the doctor is guided to adjust the position of the front housing so that the target is in the best focus position of the camera module. This not only reduces the difficulty of operation, but also ensures that different doctors can achieve the same picture clarity under similar conditions, thereby eliminating the image quality fluctuation caused by experience differences. The optimization of this structure effectively solves the impact of the complexity of the internal body environment on image clarity and the inaccurate evaluation caused by differences in doctors' operating experience, thereby reducing the risk of inappropriate treatment plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the structure of the front-end components;

[0033] Figure 3 is a schematic diagram of the structure of the shielding member;

[0034] Figure 4 It is a schematic diagram of the imaging of the camera module when the target is between the best focus position and the camera module;

[0035] Figure 5 is Figure 4 Schematic diagram of images collected by the camera module in the case;

[0036] Figure 6 It is a schematic diagram of imaging of the camera module when the target is at the best focus position away from the camera module side;

[0037] Figure 7 is Figure 6 Schematic diagram of images collected by the camera module in the case;

[0038] Figure 8It is a schematic diagram of the imaging of the camera module when the target is in the best focus position;

[0039] Fig. 9 is Figure 8 Schematic diagram of images collected by the camera module in the case;

[0040] Fig.10 images collected for endoscopy;

[0041] Fig.11 It is a schematic diagram of the structure of an endoscope.

[0042] The markings in the figure are:

[0043] 10. Endoscope; 20. Target; 100. Front end shell; 200. Camera module; 210. Indicator mark; 220. Best focus position; 300. Illumination light source; 400. Marking light source; 410. Light-emitting element; 420. Shielding element; 421. Light-transmitting portion; 422. Indicator portion; 430. Marking light spot; L1. Optical axis of the camera module; L2. Optical axis of the marking light source. DETAILED DESCRIPTION

[0044] 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.

[0045] The terms "first", "second", etc. in the specification and claims of the present 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.

[0046] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components 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".

[0047] The camera has a specific depth of field, which refers to the distance range in which the camera can capture a clear image. This range is defined by the near-field boundary and the far-field boundary. The near-field boundary is the closest distance that the camera can capture a clear image, while the far-field boundary is the farthest distance that the camera can capture a clear image. The area between the near-field boundary and the far-field boundary is the clear imaging area of ​​the camera. In practical applications, the existence of depth of field allows the camera to provide relatively clear images within a certain distance, but if the target object is beyond this range, the image clarity will decrease.

[0048] The inventors have observed that although the target object can be clearly photographed when it is between the near view limit and the far view limit, its clarity varies depending on the position of the target within the range. In particular, there are some specific positions between the near view limit and the far view limit, which are called the best focus positions, at which the target object photographed by the camera is the clearest.

[0049] In modern medicine, endoscopic technology is widely used in various minimally invasive surgeries and diagnostic procedures. Many endoscopic devices are equipped with cameras so that doctors can observe the target in real time. However, due to economic and usage constraints, many endoscopic cameras are still designed to not be able to focus automatically. This means that doctors need to manually adjust the distance between the camera and the target to ensure that the observation area is in the best focus position. This manual adjustment increases the complexity of the operation, especially in a dynamic surgical environment, which may affect the doctor's judgment and surgical efficiency.

[0050] In addition, doctors have different levels of experience, so the image clarity obtained when adjusting the endoscope will also vary. This experience-based adjustment method may lead to a decrease in image quality, which in turn affects the accurate assessment of the target. Therefore, it is particularly important to find an effective solution to improve the clarity of endoscopic images.

[0051] The following is combined with Figures 1 to 11 , a front-end component and an endoscope provided in an embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0052] The first aspect of this embodiment provides a detailed description of a front-end component.

[0053] Reference Figure 1 , Fig.11, an embodiment of the present application provides a front end assembly, which is applied to an endoscope 10. Exemplarily, the endoscope 10 includes an insertion portion, and the front end assembly is located in the insertion portion. Specifically, the front end assembly is located at the distal end of the insertion portion. In some embodiments, the front end assembly may be a part of the insertion portion, and exemplary, the front end assembly and a part of the insertion portion are an integral structure. In some embodiments, the front end assembly is detachably mounted on the insertion portion, and exemplary, the front end assembly is connected to the insertion portion by a clamping structure and / or bolts.

[0054] Reference Figure 1 , Figure 2 , the front-end assembly includes a front-end housing 100, a camera module 200, an illumination light source 300 and a marking light source 400. Among them, the front-end housing 100, as a basic structural component, provides an installation basis for the camera module 200, the illumination light source 300 and the marking light source 400. In some schemes, an instrument channel is provided in the insertion portion, one end of the instrument channel is opened at the handle portion of the endoscope 10, and the other end is located at the distal end of the insertion portion. This design allows the operator to insert instruments and other equipment into the body through the opening of the handle portion. The front-end housing 100 is also provided with an instrument port, and the instrument channel extends to the instrument port and is connected thereto. Therefore, the operator can extend the instrument from the instrument channel through the instrument port of the front-end housing 100 to perform operations on tissues in the body, etc.

[0055] In some embodiments, the illumination light source 300 is disposed at the front housing 100, and the illumination light source 300 can illuminate the internal space, so that the image captured by the camera module 200 can be clearer. It can be understood that in this embodiment, the light emitted by the illumination light source 300 is non-parallel light. Exemplarily, the illumination light source 300 is a point light source, that is, light is emitted from the illumination light source 300 to the surroundings.

[0056] Reference Figure 2 , Figure 4 In some embodiments, the camera module 200 has a preset optimal focus position 220, and the optimal focus position 220 is located between the near view limit and the far view limit. Among them, the near view limit indicates the closest distance at which the camera module 200 can capture a clear image, and the far view limit indicates the farthest distance at which a clear image can be captured. When the distance between the object and the camera module 200 is less than the near view limit or greater than the far view limit, the camera module 200 will not be able to clearly capture the object. When the object is between the near view limit and the far view limit, the camera module 200 can effectively capture a clear image. However, only when the object is exactly at the optimal focus position 220, the image captured by the camera module 200 will achieve the clearest effect. It can be understood that the clearest effect means that the image captured by the camera module 200 is the clearest.

[0057] The determination of the optimal focus position 220 needs to be combined with the specific model and optical characteristics of the camera module 200, and is usually obtained through calculation or actual measurement.

[0058] In some embodiments, the marking light source 400 is disposed in the front housing 100 to form a marking light spot 430 in the image acquisition area of ​​the camera module 200. For example, the marking light source 400 can be a laser or a concentrated light. This design enables the marking light spot 430 to have high brightness and clarity in the image, which facilitates the doctor to quickly locate the target 20 object during the observation process.

[0059] In some embodiments, reference Figure 2 , Figure 4 , the image captured by the camera module 200 has an indicator mark 210 for indicating the optical axis of the camera module 200. Among them, the optical axis of the camera module 200 represents the direction of light emitted from the optical center of the lens of the camera module 200 (usually the geometric center of the lens). Exemplarily, the center position in the image captured by the camera module 200 is the position of the optical axis. Specifically, the center position of the image captured by the camera module 200 is the position of the optical axis, and the optical axis is perpendicular to the image plane and passes through the center point of the image.

[0060] In some embodiments, the optical axis of the marking light source 400 intersects with the optical axis of the camera module 200, and the intersection position is located at the best focus position 220. It can be understood that the intersection position is located in the front area of ​​the camera module 200 and is a virtual focus. Figure 4 , Figure 6 As shown, L1 is the optical axis of the camera module 200, and L2 is the optical axis of the marking light source 400.

[0061] This design enables the doctor to more intuitively judge the distance between the object and the camera module 200 when operating the endoscope 10, thereby optimizing the imaging effect and improving the accuracy of observing the target 20. Specifically, since the optical axis of the marking light source 400 intersects with the optical axis of the camera module 200 at the best focus position 220, when the camera module 200 captures an image at the best focus position 220, an image in which the marking light spot 430 overlaps with the indicator mark 210 can be obtained.

[0062] Compared with the automatic zoom camera, the present application adopts the fixed-focus camera module 200, which, combined with the design of the present invention, can significantly reduce costs and effectively improve the accuracy of measurement. Through this fixed-focus solution, the device structure can be simplified and the size of the camera module 200 can be reduced while ensuring image clarity.

[0063] In this way, when the camera module 200 collects an image of the target 20, if the marking spot 430 coincides with the indicator mark 210, it indicates that the target 20 is at the best focus position 220. At this time, the collected image of the target 20 will be the clearest. Therefore, the operator can judge the position between the target 20 and the camera module 200 by observing the relationship between the marking spot 430 and the indicator mark 210 in the image of the camera module 200. This intuitive judgment method helps doctors make quick adjustments in a dynamic surgical environment, thereby improving the efficiency and safety of the operation.

[0064] It is understandable that the brightness of the marking light source 400 is higher than that of the illumination light source 300, so that the marking light spot 430 can be clearly distinguished in the environment illuminated by the illumination light source 300. Exemplarily, the color of the marking light source 400 is different from the color of the illumination light source 300, and this color contrast helps the doctor to more easily identify and locate the marking light spot 430. This design enhances the visibility of the marking light spot 430, so that in a complex surgical environment, the doctor can quickly determine the position of the target 20, thereby optimizing the accuracy and efficiency of the surgical operation.

[0065] Reference Figure 4 and Figure 5 , when the target 20 is located between the best focus position 220 and the camera module 200, in the image captured by the camera module 200, the marking spot 430 is located on the right side of the indicator mark 210. In this case, the image of the target 20 captured by the camera module 200 is not clear enough, which may make it difficult for the doctor to accurately determine the position of the target 20, thereby affecting the observation and evaluation of the target 20.

[0066] Reference Figure 6 and Figure 7 When the target 20 is located at the side of the best focus position 220 away from the camera module 200, the marking spot 430 is located on the left side of the indicator mark 210 in the image captured by the camera module 200. In this case, the camera module 200 cannot provide a clear image, and the doctor may also face difficulties in judging the distance and size of the target 20, which will affect subsequent operations and treatments.

[0067] Reference Figure 8 and Fig. 9 When the target 20 is located at the best focus position 220, in the image captured by the camera module 200, the marking spot 430 overlaps with the indicator mark 210 (refer to Fig.10 ). In this case, the image captured by the camera module 200 is very clear, and the doctor can clearly identify the position of the target 20 and make an accurate judgment based on the relative position of the mark, thereby effectively optimizing the observation and treatment effect of the target 20.

[0068] According to an alternative embodiment, referring to Figure 1 , Figure 2 , the indicator mark 210 is set on the lens of the camera module 200, and the optical axis of the camera module 200 passes through the center of the indicator mark 210. The indicator mark 210 is used to block at least part of the light band. Exemplarily, the indicator mark 210 is etched, pasted or printed at the center of the lens of the camera module 200. In this way, the optical axis of the camera module 200 will pass through the center of the mark. The color and transparency of the indicator mark 210 can also be adjusted to form a clear visual contrast in the captured image, thereby enhancing its visibility.

[0069] When the camera module 200 captures an image, since the indicator mark 210 is located at the center of the lens, the captured image will contain the corresponding indicator mark 210. By blocking light in some bands, the indicator mark 210 appears more obvious in the image, which helps the doctor to more accurately determine the position of the mark. For example, if a cross mark is printed at the center of the lens, a cross-shaped indicator mark 210 will appear in the image captured by the camera module 200. Since the indicator mark 210 is located at the center of the lens, it will also be at the center of the image in the captured image. Such a design helps the doctor to quickly locate and determine the position of the target 20 when observing the image.

[0070] According to an optional embodiment, the light emitted by the marking light source 400 is parallel light. In this way, the marking light source 400 can form a marking light spot 430 of uniform size and brightness in the image acquisition area, which helps doctors to quickly identify and locate.

[0071] According to an optional embodiment, the marking light spot 430 is an irregular shape. Thus, the relative position between the marking light spot 430 and the indicator mark 210 can be distinguished. Exemplarily, when the target 20 is in the area between the best focus position 220 and the camera module 200, the marking light spot 430 is located on the left side of the indicator mark 210; and when the target 20 is located on the side of the best focus position 220 away from the camera module 200, the marking light spot 430 is located on the right side of the indicator mark 210.

[0072] Through this design, the doctor can easily determine the relative position of the target 20 object from the camera module 200, so as to quickly adjust the position of the front housing 100. The irregularly shaped marking spot 430 can effectively avoid the confusion that occurs when the marking spot 430 is a regular shape, so that the doctor can quickly determine whether the front housing 100 should be moved closer to the target 20 object or farther away from the target 20 object. This intuitive visual guidance helps to improve the efficiency and accuracy of the operation.

[0073] According to an optional embodiment, the marking light spot 430 is in the shape of an arrow. This design allows the doctor to clearly determine whether the front housing 100 needs to be close to the target 20 object or away from the target 20 object by judging the direction of the arrow. For example, when the arrow points to the indicator mark 210, it means that the front housing 100 needs to be close to the target 20 object; and when the arrow points away from the indicator mark 210, it means that the front housing 100 needs to be away from the target 20 object. In this way, the doctor can react quickly and adjust the position of the front housing 100.

[0074] According to an optional embodiment, the side of the marking light spot 430 facing or away from the optical axis of the camera module 200 may have a shape different from other parts. This differentiated design further enhances the doctor's intuitive judgment ability of the position of the target 20, making the operation of adjusting the front housing 100 faster and more accurate, thereby optimizing the surgical effect.

[0075] According to an alternative embodiment, referring to Figure 3 , Figure 4 The marking light source 400 includes a light emitting element 410 and a shielding element 420. The shielding element 420 includes a light-transmitting portion 421. The light emitted by the light emitting element 410 can be irradiated into the image acquisition area of ​​the camera module 200 through the light-transmitting portion 421. By adjusting the shape of the light-transmitting portion 421, the shape of the marking light spot 430 can be accurately controlled to achieve the desired effect of the marking light spot 430. This flexible design enables doctors to optimize the visual characteristics of the marking light spot 430 according to specific needs and improve the accuracy of judging the position of the target 20.

[0076] According to an optional embodiment, the shielding member 420 includes an indicator portion 422, which is light-transmissive, and is located on the side of the light-transmissive portion 421 close to the camera module 200, and the shape of the indicator portion 422 is different from that of the light-transmissive portion 421. The shape of the indicator portion 422 is different from that of the light-transmissive portion 421, and such a design can provide additional visual information for the doctor. Through the indicator portion 422, the doctor can more easily determine the orientation of the marking light spot 430, thereby quickly determining the direction in which the front end housing 100 needs to be adjusted. This design enhances the doctor's positioning ability during the operation and improves the efficiency and accuracy of the operation.

[0077] According to an optional embodiment, the light-transmitting portion 421 is an irregular shape. Thus, an irregular marking light spot 430 is generated in the acquisition area of ​​the camera module 200, and the relative position between the marking light spot 430 and the indicator mark 210 can be distinguished. Exemplarily, when the target 20 is in the area between the best focus position 220 and the camera module 200, the marking light spot 430 is located on the left side of the indicator mark 210; and when the target 20 is located on the side of the best focus position 220 away from the camera module 200, the marking light spot 430 is located on the right side of the indicator mark 210. The orientation of the front-end housing 100 is different, and the situation where the marking light spot 430 is located on the left or right side of the indicator mark 210 will also be different. Therefore, the irregular shape can be used to determine the direction in which the front-end housing 100 actually needs to be adjusted.

[0078] Through this design, the doctor can easily determine the relative position of the target 20 object from the camera module 200, so as to quickly adjust the position of the front housing 100. The irregularly shaped marking spot 430 can effectively avoid the confusion that occurs when the marking spot 430 is a regular shape, so that the doctor can quickly determine whether the front housing 100 should be moved closer to the target 20 object or farther away from the target 20 object. This intuitive visual guidance helps to improve the efficiency and accuracy of the operation.

[0079] According to an optional embodiment, the light-transmitting portion 421 is arrow-shaped, and the tip of the light-transmitting portion 421 faces the camera module 200 side. This design can generate an arrow-shaped marking spot 430 in the image acquisition area of ​​the camera module 200, so that the doctor can clearly judge whether the front end housing 100 needs to be close to the target 20 object or away from the target 20 object by judging the direction of the arrow. For example, when the arrow points to the indicator mark 210, it means that the front end housing 100 needs to be close to the target 20 object; and when the arrow deviates from the indicator mark 210, it indicates that the front end housing 100 needs to be away from the target 20 object. In this way, the doctor can react quickly and adjust the position of the front end housing 100.

[0080] According to an optional embodiment, the indicator portion 422 is spaced apart from the light-transmitting portion 421 and is disposed on the shielding member 420 (not shown in the figure). This design ensures that the indicator portion 422 does not affect the shape and size of the light-transmitting portion 421, so that the size of the target 20 can be effectively compared based on the size of the area of ​​light transmitted by the light-transmitting portion 421.

[0081] According to an optional embodiment, the light-transmitting portion 421 overlaps with a portion of the indicating portion 422. This design is not only convenient for the doctor to observe, but also can guide the doctor to identify the position of the marking light spot 430 through the indicating portion 422. This configuration improves the visibility of the image and enhances the doctor's operating convenience and judgment accuracy during the operation.

[0082] According to an alternative embodiment, referring to Figure 6 , Figure 8 , the optical axis of the illumination light source 300 intersects with the optical axis of the camera module 200, and the intersection position is located outside the best focus position 220 of the camera module 200. This design can avoid the interference of the illumination light source 300 on the imaging of the camera module 200, thereby improving the clarity and quality of the image.

[0083] In another optional embodiment, the optical axis of the illumination light source 300 is parallel to the optical axis of the camera module 200. This configuration also helps to maintain the clarity of the image, avoids the brightness of the illumination light source 300 from being concentrated on the irradiation area of ​​the marking light source 400, and thus improves the visibility of the marking light spot 430.

[0084] Specifically, the illumination light source 300 is a point light source, and the brightness at its center is the highest. If the center of the point light source coincides with the irradiation site of the marking light source 400, it may be difficult for the doctor to distinguish the marking light spot 430 when observing the image. Therefore, by designing the intersection of the illumination light source 300 and the marking light source 400 to be outside the optimal focus position 220, such overlap can be avoided to a certain extent, thereby improving the recognizability of the marking light spot 430. This design is beneficial for the doctor to quickly determine the position of the target 20 during surgery, thereby improving the efficiency and accuracy of surgery.

[0085] The second aspect of this embodiment describes an endoscope 10 in detail.

[0086] Reference Fig.11 , an embodiment of the present application provides an endoscope 10, including a front end assembly of the above embodiment. In this way, the endoscope 10 has the beneficial effects of the above front end assembly, which will not be repeated here. The endoscope 10 referred to in the embodiment of the present application can 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 embodiment of the present application does not specifically limit the type of the endoscope 10.

[0087] The third aspect of this embodiment describes in detail an image acquisition method.

[0088] An image acquisition method, applied to an endoscope 10 of the above embodiment, comprises the following steps:

[0089] S001. Capture an image of the area where the target 20 is located by using the camera module 200.

[0090] S002 . Adjust the position of the front end housing 100 so that the indicator mark 210 in the image captured by the camera module 200 is located at the center of the target 20 .

[0091] S003 . Adjust the distance between the front end housing 100 and the target 20 so that the marking light spot 430 coincides with the indicating mark 210 , thereby obtaining an optimal image of the target 20 .

[0092] The fourth aspect of this embodiment provides a detailed description of an image analysis method.

[0093] An embodiment of the present application provides an image analysis method, including an image acquisition method in the above embodiment.

[0094] The size of the target 20 is determined based on the percentage of the target 20 in the best image. Exemplarily, the distance of the target 20 from the camera module 200 is known, so the size of the image area captured by the camera module 200 is constant, so by comparing the percentage of the target 20 in the best image, the actual size of the target 20 can be calculated.

[0095] According to an optional embodiment, the size of the target 20 is determined based on the relative size of the target 20 and the marking light spot 430 in the optimal image. Exemplarily, the size of the marking light spot 430 is determined after being generated by parallel light irradiation and irradiated at the position of the target 20. The area of ​​the target 20 area can be calculated by the area ratio of the marking light spot 430 to the target 20 area in the image captured by the camera module 200.

[0096] For example, the method can determine the size of the stone, helping doctors to judge the volume of the stone so as to effectively remove the stone and avoid the situation where the stone cannot be removed through the ureter due to misjudgment. This not only improves the efficiency and effect of the operation, but also reduces the pain and surgical risks of the patient. Through such a design, the endoscope 10 can provide more accurate information during the analysis and processing of the target 20, ensuring the success rate and safety of the operation.

[0097] It is understandable that in this embodiment, the target 20 may be a lesion, a foreign body, etc., and the specific type is not limited. The method is applicable to a variety of medical or tubular object foreign body detection scenarios.

[0098] 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 assembly, applied to an endoscope (10), characterized in that: include: Front end housing (100); A camera module (200), arranged on the front housing (100) and used for collecting images, the camera module (200) having a preset optimal focus position (220); An illumination light source (300), arranged on the front end housing (100) and used for illumination; as well as, A marking light source (400), arranged in the front end housing (100), and used to form a marking light spot (430) in the image acquisition area of ​​the camera module (200); The image captured by the camera module (200) has an indication mark (210) for indicating the optical axis of the camera module (200); the optical axis of the marking light source (400) intersects with the optical axis of the camera module (200), and the intersection position is located at the optimal focus position (220); the marking light spot (430) is an irregular shape; or, the marking light spot (430) is an arrow shape; or, the marking light spot (430) has a shape different from other parts on the side facing or away from the optical axis of the camera module (200).

2. A front end assembly according to claim 1, characterized in that: The indicator mark (210) is arranged on the lens of the camera module (200), the optical axis of the camera module (200) passes through the center of the indicator mark (210), and the indicator mark (210) is used to shield light of at least a part of the wavelength band.

3. A front end assembly according to claim 1, characterized in that: The light emitted by the marking light source (400) is parallel light.

4. A front end assembly according to claim 1, characterized in that: The marking light source (400) comprises a light-emitting element (410) and a shielding element (420); the shielding element (420) comprises a light-transmitting portion (421); and light emitted by the light-emitting element (410) can pass through the light-transmitting portion (421) to illuminate the image acquisition area of ​​the camera module (200).

5. A front end assembly according to claim 4, characterized in that: The shielding member (420) comprises an indicating portion (422), the indicating portion (422) being arranged to be light-transmissive, the indicating portion (422) being located on a side of the light-transmissive portion (421) close to the camera module (200), and the shape of the indicating portion (422) being different from that of the light-transmissive portion (421); And / or, the light-transmitting portion (421) is of an irregular shape; And / or, the light-transmitting portion (421) is arrow-shaped, with the tip of the light-transmitting portion (421) facing the camera module (200) side.

6. A front end assembly according to claim 5, characterized in that: The indicating portion (422) and the light-transmitting portion (421) are arranged at intervals on the shielding member (420); Alternatively, the light-transmissive portion (421) and a partial area of ​​the indicating portion (422) overlap.

7. A front end assembly according to claim 1, characterized in that: The optical axis of the illumination light source (300) intersects with the optical axis of the camera module (200), and the intersection position is located outside the best focus position (220) of the camera module (200); Alternatively, the optical axis of the illumination light source (300) is parallel to the optical axis of the camera module (200).

8. An endoscope, characterized in that: A front-end component comprising any one of claims 1-7.

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