Endoscope front end head, insertion part and endoscope

Abstract

The utility model provides a front end head and an insertion part of an endoscope and the endoscope, and relates to the technical field of endoscopes, front-end devices of the endoscope comprise a camera, an instrument tube and a light source, and the front-end devices are divided into a first front-end device and a second front-end device. The front end head comprises a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is used for positioning and installing a first front-end device, and the second accommodating cavity is used for installing a second front-end device; and the front end head is configured in a way that a gap is reserved between the second front-end device and the inner cavity wall of the second accommodating cavity under the condition that the second front-end device is arranged in the second accommodating cavity. The scheme at least can be used for solving the problem that the front-end device in the related technology is easy to loosen and separate.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a front end head, an insertion part and an endoscope. Background Art

[0002] An endoscope is a medical device used to examine the inside of the human body. It enters the body through natural orifices or surgical incisions, allowing doctors to directly observe internal structures and obtain diagnostic information. An endoscope consists of a handle and an insertion portion. The distal end of the insertion portion has a distal tip, which houses a camera, instrument tube, and light source. When these components are installed, the distal tip is provided with cavities for each of these components.

[0003] In the related art, multiple matching accommodating cavities are usually opened on the front end, and different components are fixedly installed in the corresponding accommodating cavities by applying glue. However, in practice, it is found that some components of the above related art often become loose or detached. Utility Model Content

[0004] The present application discloses a front end head, an insertion portion and an endoscope of an endoscope, so as to solve the technical problem that components in the related art often become loose or detached.

[0005] In the first aspect, the present application provides a front end head of an endoscope, wherein the front end devices of the endoscope include a camera, an instrument tube and a light source, and the front end devices are divided into a first front end device and a second front end device; the front end head includes a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is used to position and install the first front end device, and the second accommodating cavity is used to install the second front end device; the front end head is configured so that when the second front end device is placed in the second accommodating cavity, a gap remains between the second front end device and the inner cavity wall of the second accommodating cavity.

[0006] In some embodiments, the inner wall of the second accommodating cavity has a first supporting surface and a second supporting surface relative to each other, and a mounting position is defined between the first supporting surface and the second supporting surface, and the mounting position is used to position and mount the corresponding second front-end component.

[0007] In some embodiments, the inner wall of the second accommodating cavity also has a third support surface, the third support surface is on the first distribution path, the first support surface and the second support surface are on the second distribution path, and the first distribution path intersects with the second distribution path; when the second front-end device is placed in the locking position, the corresponding second front-end device is positioned and matched with the third support surface.

[0008] In some embodiments, a margin space is defined between the third supporting surface and the first supporting surface; and / or a margin space is defined between the third supporting surface and the second supporting surface.

[0009] In some embodiments, the front end head further includes an isolation structure, and at least one of the first support surface and the second support surface is located on the isolation structure.

[0010] In some embodiments, the isolation structure is bent and includes a first sub-portion and a second sub-portion that are bent relative to each other. A first sub-cavity is formed between the first sub-portion and the inner cavity wall of the second accommodating cavity, and the first sub-cavity is used to install the corresponding second front-end device; a second sub-cavity is formed between the second sub-portion and the inner cavity wall of the second accommodating cavity, and the second sub-cavity is used to install the corresponding second front-end device.

[0011] In some embodiments, the first supporting surface is close to the bent portion of the isolation structure; and / or the second supporting surface is close to the bent portion of the isolation structure.

[0012] In some embodiments, the first front-end component is a camera, and the second front-end component is an instrument tube and a light source.

[0013] In a second aspect, the present application provides an insertion portion, comprising a camera, an instrument tube, a light source, and the front end head of the first aspect of the present application.

[0014] In a third aspect, the present application provides an endoscope comprising the insertion portion described in the second aspect of the present application.

[0015] The utility model has the following advantages and beneficial effects:

[0016] When installing the front-end device on the front end head of the endoscope, the first front-end device is positioned and installed in the first accommodating cavity. At this time, the first front-end device in the first accommodating cavity will be fixed more stably; then the second front-end device is installed in the second accommodating cavity. Since there is a gap between the second front-end device and the inner wall of the second accommodating cavity after the second front-end device is placed in the second accommodating cavity, glue can be injected into the gap, and a certain filling space can be allowed for the glue to improve the retention effect of the glue in the gap.

[0017] Alternatively, when installing the second front-end device in the second accommodating cavity, glue is first applied to the outer wall of the second front-end device, and then the second front-end device is inserted into the second accommodating cavity. At this time, the remaining gap between the second front-end device and the inner wall of the second accommodating cavity can retain the glue, which can to a certain extent avoid the situation where the glue is squeezed out due to lack of remaining space.

[0018] Compared to related technologies, the front-end head of the present invention maximizes the size of the cavity for accommodating the front-end components without changing its dimensions, and reserves a gap within the cavity for glue to remain. This effectively allows the glue to remain within the cavity and adhere the front-end components installed therein, effectively improving the installation stability of the front-end components within the cavity of the front-end head, making it less likely for the front-end components to become loose or detached. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the front end of the embodiment of the present application Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the front-end device of the embodiment of the present application installed in the front-end head Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the front end of the embodiment of the present application Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the front-end device of the embodiment of the present application installed in the front-end head Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the embodiment of the present application for illustrating the outline of a front end head provided with a first accommodating cavity and a second accommodating cavity;

[0025] Figure 6 is a schematic structural diagram of the insertion portion of an embodiment of the present application;

[0026] Figure 7 It is a schematic structural diagram of an endoscope according to an embodiment of the present application.

[0027] The following are marked in the figure:

[0028] 100, front end; 110, first accommodating cavity; 120, second accommodating cavity; 121, first sub-cavity; 1210, first supporting surface; 122, second sub-cavity; 1220, second supporting surface; 1230, third supporting surface; 1240, margin space; 130, isolation structure; 131, first sub-section; 132, second sub-section;

[0029] 200, front-end device; 210, camera; 220, instrument tube; 230, light source;

[0030] 300. Insertion part. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] An endoscope is a medical device used to examine the interior of the human body. It enters the body through natural orifices or surgical incisions, allowing doctors to directly observe internal structures and obtain diagnostic information. Typically, an endoscope consists of a handle and an insertion portion. The distal end of the insertion portion is equipped with a front end, which houses key components such as a camera, instrument tube, and light source. In existing technologies, the front end of an endoscope must be designed to be extremely compact to facilitate smooth entry into human cavities. To accommodate these components, the front end is typically provided with a corresponding cavity for placing these devices.

[0034] In the related art, multiple matching cavities are typically created on the front end of the endoscope, and different components are secured within the corresponding cavities using glue. However, in practice, this method of securing has been found to have significant reliability issues. Because the size of the front end of the endoscope is limited by the human body's cavities, the design must be extremely compact, which directly results in a very narrow cavities. In such a confined space, injecting glue and securing the components becomes extremely difficult.

[0035] After research, the applicant found that, based on the limited size design of the front-end head, since the opening area of ​​the accommodating cavity is almost the same as the cross-sectional area of ​​the front-end device, there is often not enough space for glue injection during the installation process. Specifically, it manifests as follows: 1. It is difficult to smoothly pour glue into the accommodating cavity; 2. The glue is applied to the side wall of the front-end device in advance and then placed in the accommodating cavity, which will result in insufficient glue remaining in the accommodating cavity. As a result, during installation, the glue will be squeezed out of the accommodating cavity and the front-end device cannot be effectively fixed. These problems make key components such as the camera, instrument tube and light source prone to loosening and detachment during use, seriously affecting the reliability and safety of the endoscope.

[0036] Therefore, there is a lot of room for improvement in the installation method of the front-end device of the endoscope in the relevant technology, especially in the technical problem of how to achieve stable installation of the device in a small space, and an effective solution is urgently needed.

[0037] In view of this, in a first aspect, some embodiments of the present application provide a front-end head for an endoscope. The front-end head is applied to an endoscope, and the front-end components of the endoscope include a camera, an instrument tube, and a light source. The front-end components are divided into a first front-end component and a second front-end component. Therefore, the first front-end component may include at least one of the camera, the instrument tube, and the light source, and the second front-end component may include other components in addition to the first front-end component.

[0038] Of course, in addition to the aforementioned camera, instrument tube, and light source, the front-end components may also include other components, such as a jet sprayer, suction tube, irrigation channel, guidewire catheter, gas channel, ultrasound probe, and sensor module. It is worth noting that the components installed on the front end can be arbitrarily combined according to different surgical requirements to enhance the versatility and operational flexibility of the endoscope.

[0039] See Figures 1 to 7 In some embodiments, the front-end head 100 includes a first accommodating cavity 110 and a second accommodating cavity 120. The first accommodating cavity 110 is used to position and install the first front-end device, and the second accommodating cavity 120 is used to install the second front-end device. It is worth noting that the first accommodating cavity 110 and the second accommodating cavity 120 are merely used to facilitate the distinction between the types of accommodating cavities so that they can accommodate different front-end devices 200, and there is no specific limit on the number of accommodating cavities provided on the front-end head 100. For example, depending on different surgical requirements, the front-end head 100 can also be provided with one, three, or four accommodating cavities.

[0040] At the same time, the first accommodating cavity 110 is used to position and install the first front-end component. Positioning and installation refers to setting the opening area of ​​the first accommodating cavity 110 to be the same as or similar to the cross-sectional area of ​​the first front-end component, so as to meet the installation requirements of the first front-end component while minimizing the size of the first accommodating cavity 110 as much as possible, thereby allowing the first front-end component to be properly installed in the first accommodating cavity 110.

[0041] For example, in order to improve the installation effect of the first front-end device in the first accommodating cavity 110, the opening shape of the first accommodating cavity 110 can be set to a polygon, such as a triangle, a rectangle, etc. Similarly, the cross-sectional shape of the first front-end device is also adapted to the shape of the first accommodating cavity 110. In this way, after the first front-end device is installed in the first accommodating cavity 110, the rotation of the first front-end device in its own circumferential direction will be restricted, thereby achieving the positioning and installation effect of the first front-end device in the first accommodating cavity 110. Of course, in order to further improve the positioning and installation effect, the first accommodating cavity 110 can also have other settings. For example, on the basis that the opening shape of the first accommodating cavity 110 is adapted to the first front-end device, the opening area of ​​the first accommodating cavity 110 is set to be smaller than the cross-sectional area of ​​the first front-end device, so that the first front-end device and the first accommodating cavity 110 achieve an interference fit.

[0042] It is worth emphasizing that the “first” and “second” in the above-mentioned first front-end device, second front-end device, first accommodating cavity 110 and second accommodating cavity 120 represent the distinction of structural categories, rather than the limitation of their quantity. The objects distinguished are usually of one category, and the number of objects is not limited. For example, in Figure 2 In the illustrated embodiment, the first front-end device includes one camera 210 , and the second front-end device includes two light sources 230 and instrument tubes 220 .

[0043] Furthermore, the second accommodating cavity 120 is used to install the second front-end device. The front-end head 100 is configured so that, when the second front-end device is placed in the second accommodating cavity 120, a gap remains between the second front-end device and the inner wall of the second accommodating cavity 120. With this configuration, the opening area of ​​the second accommodating cavity 120 is larger than the sum of the cross-sectional areas of the second front-end devices, making it easier to place the second front-end device in the second accommodating cavity 120. On this basis, the gap provides sufficient filling space, and glue can be injected into the gap, thereby improving the retention of the glue, ensuring that the glue can be evenly distributed and firmly adhered between the second front-end device and the wall of the second accommodating cavity 120, and enhancing the connection reliability of the second front-end device.

[0044] At the same time, there is another way to install the second front-end component in the second accommodating cavity 120. Before inserting the second front-end component into the second accommodating cavity 120, glue is evenly applied to the outer peripheral wall of the second front-end component, and then the component is inserted into the second accommodating cavity 120. During the insertion process, the gap formed between the second front-end component and the inner wall of the second accommodating cavity 120 can effectively retain the glue, thereby preventing the glue from being squeezed out due to insufficient gap.

[0045] Compared to the prior art, the embodiment of the present application maximizes the size of the housing cavity for the front-end device 200 through optimized design, without changing the overall size of the front-end head 100, and reserves sufficient clearance space for the glue to remain. This design effectively ensures that the glue can fully remain in the housing cavity, enhancing the bonding strength of the front-end device 200, thereby significantly improving the installation stability of the front-end device 200 in the housing cavity and reducing the risk of the device loosening or detaching.

[0046] In some embodiments, referring to Figure 2 、 Figure 3 The inner wall of the second accommodating cavity 120 has a first supporting surface 1210 and a second supporting surface 1220 relative to each other. A snap-in position is defined between the first supporting surface 1210 and the second supporting surface 1220. The snap-in position is used to position and snap-in the corresponding second front-end device. After such a setting, when installing the second front-end device, the setting of the snap-in position can improve the convenience of the second front-end device during the installation process, that is, when the operator installs the second device, it can more easily find the position for installing the second front-end device in the second accommodating cavity 120 to avoid the situation where the second front-end device is not inserted in the right position and is damaged. In addition, since the snap-in position defines the installation position of the second front-end device, after the second front-end device enters the snap-in position, the first supporting surface 1210 and the second supporting surface 1220 can effectively abut the second front-end device entering the snap-in position, so that the installation reliability of the second front-end device in the snap-in position is higher.

[0047] In some embodiments, combined Figure 3 、 Figure 4 The inner wall of the second accommodating cavity 120 further comprises a third support surface 1230. Third support surface 1230 is located on the first distribution path. The first support surface 1210 and the second support surface 1220 are located on the second distribution path, and the first distribution path and the second distribution path intersect. When the second front-end component is positioned in the snap-fit ​​position, the corresponding second front-end component is positioned and engaged with third support surface 1230.

[0048] On this basis, when the second front-end component is installed in the snap-fit ​​position within the second accommodating cavity 120, the two opposing sides of the corresponding second front-end component are respectively positioned and matched with the first support surface 1210 and the second support surface 1220, and the outer wall surface of the other side of the corresponding second front-end component is positioned and matched with the third support surface 1230, so that the outer peripheral wall of the corresponding second front-end component has three support points within the snap-fit ​​position. In this way, the movement of the corresponding second front-end component in three directions within the snap-fit ​​position is restricted, which is beneficial to improving the installation reliability of the corresponding second front-end component within the second accommodating cavity 120.

[0049] In some embodiments, combined Figure 3 、 Figure 4 , a margin space 1240 is defined between the third support surface 1230 and the first support surface 1210; and / or, a margin space 1240 is defined between the third support surface 1230 and the second support surface 1220. In this way, when the second front-end component is installed in the snap-in position, there is at least one margin space 1240 between the corresponding second front-end component and the snap-in position, which makes it convenient to inject glue into the margin space 1240 so that the corresponding second front-end component is fastened to the snap-in position through the adhesive action of the glue. Of course, glue can also be applied to the outer peripheral wall of the corresponding second front-end component in advance. It is worth noting that when applying glue in advance, the operator should estimate the location of the glue application in advance so that the wall surface of the corresponding second front-end component coated with glue is within the margin space 1240 after the corresponding second front-end component is inserted into the snap-in position. This can prevent the glue from being squeezed out too much and reducing the bonding effect, and thus prevent the corresponding second front-end component from loosening or detaching.

[0050] In some embodiments, referring to Figure 4 、 Figure 5, the front end head 100 also includes an isolation structure 130, and at least one of the first support surface 1210 and the second support surface 1220 is located on the isolation structure 130. Exemplarily, the isolation structure 130 is located between the first accommodating cavity 110 and the second accommodating cavity 120, and is used to separate the first accommodating cavity 110 and the second accommodating cavity 120. Moreover, the provision of the isolation structure 130 can enhance the overall strength of the front end head 100 after the accommodating cavity is opened, that is, the isolation structure 130 is a portion with higher structural strength on the end face of the front end head 100, and at least one of the first support surface 1210 and the second support surface 1220 is located on the isolation structure 130, which will enable the isolation structure 130 to withstand the abutment force applied by the corresponding second front end device to the first support surface 1210 or the second support surface 1220 after the second front end device is placed in the card-mounting position, so as to improve the installation stability of the corresponding second front end device at the card-mounting position, thereby avoiding the situation where the corresponding second front end device damages the front end head 100 during the insertion into the card-mounting position to a certain extent. It is worth noting that in the present application Figures 1 to 5 , only the state of the first supporting surface 1210 being on the isolation structure 130 is shown, and the state of the second supporting surface 1220 being on the isolation structure 130 is not shown.

[0051] In some embodiments, such as Figure 3 、 Figure 4 As shown, the isolation structure 130 is bent and includes a first sub-portion 131 and a second sub-portion 132 that are relatively bent. The first sub-portion 131 forms a first sub-cavity 121 with the inner wall of the second accommodating cavity 120. The first sub-cavity 121 is used to install the corresponding second front-end device. The second sub-portion 132 forms a second sub-cavity 122 with the inner wall of the second accommodating cavity 120. The second sub-cavity 122 is used to install the corresponding second front-end device. It is worth noting that in this embodiment, the first sub-cavity 121 and the second sub-cavity 122 are only used to facilitate the expression that the second accommodating cavity 120 has partitions in some cases so that they can accommodate different second front-end devices at the same time, and the second accommodating cavity 120 is not limited to having only two partitions. For example, according to different surgical requirements, the second accommodating cavity 120 can also have one, three, or four partitions. Similarly, the first sub-portion 131 and the second sub-portion 132 of the isolation structure 130 are also the same, and will not be repeated here.

[0052] On this basis, the bent isolation structure 130 has a more complex geometry than a straight isolation structure 130, which results in a more uniform stress distribution within the isolation structure 130. When the bent isolation structure 130 is subjected to the abutment force generated by the placement of the second front-end device, the bend guides and disperses the stress, reducing stress concentration points and thus better resisting deformation overall.

[0053] At the same time, the bent isolation structure 130 has additional bends or folds in its shape. These deformable structures can provide greater rigidity to the isolation structure 130. The greater the rigidity, the smaller the deformation of the isolation structure 130 when subjected to external forces, thus exhibiting higher strength. For example, when the isolation structure 130 is bent into a "V" shape, a "U" shape, or an "L" shape, it can provide greater bending and compression resistance, as shown in the attached figure. Figure 3 The isolation structure 130 is configured to be L-shaped, so that the bearing capacity of the isolation structure 130 can be improved when the second front-end device is placed in the first sub-cavity 121 or the second sub-cavity 122 .

[0054] Furthermore, by separating the second accommodating cavity 120 into a first subsection 131 and a second subsection 132 through the isolation structure 130, the first subsection 131 and the second subsection 132 can each accommodate a portion of the corresponding second front-end components, thereby improving the space utilization of the second accommodating cavity 120 while ensuring that the second front-end components are independent of each other. In summary, after the second front-end components are placed in the snap-fit ​​position, due to the strong deformation resistance of the isolation structure 130 itself, the corresponding second front-end components will be more firmly installed in the snap-fit ​​position, thereby making it less likely for the corresponding second front-end components to loosen or detach.

[0055] In some embodiments, reference Figure 4 、 Figure 5 , the first support surface 1210 is close to the bent portion of the isolation structure 130; the second support surface 1220 is close to the bent portion of the isolation structure 130. After being set in this way, since the bent portion of the isolation structure 130 has a higher bending rigidity, it can effectively disperse the force and reduce the stress concentration in a single part, so that it can withstand greater external forces. For example, when the second front-end device is placed in the mounting position, the corresponding second front-end device will apply external force to the first support surface 1210 and the second support surface 1220. If this part of the external force is close to the bent portion of the isolation structure 130, the bent portion can decompose the external force into component forces in multiple directions and transmit it to the entire isolation structure 130. At the same time, since the external force is no longer completely concentrated in a single direction, but is dispersed to multiple parts of the isolation structure 130, the overall bearing capacity of the isolation structure 130 is improved. Furthermore, when the bending portion of the isolation structure 130 is subjected to external force, since the deformation of the bending portion of the isolation structure 130 is usually large, this deformation allows the bending portion to absorb part of the external force through elastic deformation, thereby avoiding brittle failure of the isolation structure 130, further improving the installation stability of the corresponding second front-end device in the mounting position, and reducing the probability of the corresponding second front-end device becoming loose or detached. It is worth noting that in the present application Figures 1 to 5, only the state of the first supporting surface 1210 close to the bent portion of the isolation structure 130 is shown, while the state of the second supporting surface 1220 close to the bent portion of the isolation structure 130 is not shown.

[0056] In some embodiments, referring to Figure 2 、 Figure 4 , the first front-end device is the camera 210, and the second front-end device is the instrument tube 220 and the light source 230. In this way, the camera 210 is positioned and installed alone in the first accommodating cavity 110, and the instrument tube 220 and the light source 230 are installed in conjunction with each other in the second accommodating cavity 120. The advantage of this arrangement is that, during the use of the endoscope, the camera 210 is responsible for presenting the captured image to the operator, so as to facilitate the operator to control the movement of the insertion part in the human body cavity or to facilitate the operator to view the lesion. Therefore, the camera 210 needs to be in an unobstructed installation position on the front end head 100 as much as possible, and by installing the camera 210 alone in the first accommodating cavity 110, the front end of the camera 210 can be as unobstructed as possible, thereby improving the shooting effect of the camera 210.

[0057] Of course, the camera 210, the instrument tube 220, and the light source 230 may also be arranged in other ways. For example, the camera 210 and the light source 230 may be installed in conjunction with each other in the second accommodating cavity 120, while the instrument tube 220 is independently positioned and installed in the first accommodating cavity 110. This arrangement allows the light source 230 to be closer to the camera 210, allowing the light source 230 to better assist the camera 210 in illuminating the area around the camera 210 and improving the camera 210's photographic effect.

[0058] See Figures 1 to 7 Secondly, some embodiments of the present application further provide an insertion portion comprising a camera 210, an instrument tube 220, a light source 230, and the front end head 100 described in any of the aforementioned solutions. Thus, the insertion portion of the embodiments of the present application possesses the benefits of the aforementioned front end head 100 and will not be further described here.

[0059] See Figures 1 to 7 In a third aspect, some embodiments of the present application further provide an endoscope comprising the insertion portion 300 mentioned in any of the aforementioned schemes.

[0060] The endoscopes involved in the embodiments of the present application may be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, nasoscopes, stomatoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. The embodiments of the present application do not impose any specific restrictions on the types of endoscopes.

[0061] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements 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 of an endoscope, characterized in that: The front-end device (200) of the endoscope comprises a camera (210), an instrument tube (220), and a light source (230), and the front-end device (200) is divided into a first front-end device and a second front-end device; The front-end head (100) comprises a first accommodating cavity (110) and a second accommodating cavity (120), wherein the first accommodating cavity (110) is used for positioning and installing the first front-end component, and the second accommodating cavity (120) is used for installing the second front-end component; The front end head (100) is configured such that, when the second front end device is placed in the second accommodating cavity (120), a gap remains between the second front end device and the inner cavity wall of the second accommodating cavity (120).

2. The front end of an endoscope according to claim 1, characterized in that: The inner cavity wall of the second accommodating cavity (120) has a first supporting surface (1210) and a second supporting surface (1220) opposite to each other, and a snap-fitting position is defined between the first supporting surface (1210) and the second supporting surface (1220), and the snap-fitting position is used to position and snap-fit ​​the corresponding second front-end device.

3. The front end of an endoscope according to claim 2, characterized in that: The inner cavity wall of the second accommodating cavity (120) further has a third supporting surface (1230), the third supporting surface (1230) is located on a first distribution path, the first supporting surface (1210) and the second supporting surface (1220) are located on a second distribution path, and the first distribution path intersects with the second distribution path; When the second front-end device is placed in the clamping position, the corresponding second front-end device is positioned and matched with the third supporting surface (1230).

4. The front end of an endoscope according to claim 3, characterized in that: A margin space (1240) is defined between the third supporting surface (1230) and the first supporting surface (1210); And / or, a margin space (1240) is defined between the third supporting surface (1230) and the second supporting surface (1220).

5. The front end tip of an endoscope according to any one of claims 2 to 4, characterized in that: The front end head (100) further includes an isolation structure (130), and at least one of the first support surface (1210) and the second support surface (1220) is located on the isolation structure (130).

6. The front end tip of an endoscope according to claim 5, characterized in that: The isolation structure (130) is bent, and comprises a first sub-portion (131) and a second sub-portion (132) that are bent relative to each other. A first sub-cavity (121) is formed between the first sub-portion (131) and the inner cavity wall of the second accommodating cavity (120). The first sub-cavity (121) is used to install the corresponding second front-end device. A second sub-cavity (122) is formed between the second sub-portion (132) and the inner cavity wall of the second accommodating cavity (120), and the second sub-cavity (122) is used for installing the corresponding second front-end device.

7. The front end tip of an endoscope according to claim 6, characterized in that: The first supporting surface (1210) is close to the bent portion of the isolation structure (130); And / or, the second supporting surface (1220) is close to the bent portion of the isolation structure (130).

8. The front end tip of an endoscope according to claim 1, characterized in that: The first front-end device is a camera (210), and the second front-end device is an instrument tube (220) and a light source (230).

9. An insertion portion, characterized in that: The invention comprises a camera (210), an instrument tube (220), a light source (230), and a front end head (100) according to any one of claims 1 to 8.

10. An endoscope, characterized in that: The invention comprises an inserting portion (300) as claimed in claim 9.

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