Insertion portion and endoscope

Abstract

The invention discloses an insertion part and an endoscope, and relates to the technical field of medical instruments. The insertion part disclosed by the invention is used for an endoscope. The insertion part comprises a camera module, an insertion tube and an instrument tube, the camera module comprises a mounting seat, a camera and a light source, and the camera and the light source are both mounted on the mounting seat; the camera module is located at the far end of the insertion part, the instrument tube is arranged in the insertion tube in a penetrating mode, and the far end of the instrument tube corresponds to the first channel space of the mounting base so as to be communicated with the outside through the first channel space; and the mounting seat is detachably connected with at least one of the insertion tube and the instrument tube and is used for being detached from the far end of the insertion part so as to recover the camera module. The scheme at least can be used for solving the problem that an existing endoscope is high in use cost.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an insertion portion and an endoscope. Background Art

[0002] With the continuous development of medical technology, endoscopes have been widely used in the diagnosis and treatment of diseases. At present, in order to avoid cross infection caused by repeated use of endoscopes, disposable endoscopes are often used. However, the single-disposable form leads to excessively high cost of endoscope use.

[0003] In order to reduce the cost of use, some related technologies achieve this goal by designing a part of the structure on the endoscope handle side to be reusable. The endoscope handle using this technology includes a disposable part and a reusable part. After the endoscope is used, the insertion part and the disposable part of the handle can be discarded, while the reusable part of the handle is retained for subsequent reuse, thereby reducing the cost of use. The above-mentioned related technologies still have very limited control over the cost of use of endoscopes, and there is still a relatively obvious problem of excessively high cost of use. Summary of the invention

[0004] The present application provides an insertion portion and an endoscope, which can at least be used to solve the problem of high cost of using existing endoscopes.

[0005] In a first aspect, an embodiment of the present application provides an insertion portion for an endoscope.

[0006] The insertion part includes a camera module, an insertion tube and an instrument tube, wherein: the camera module includes a mounting seat, a camera and a light source, and the camera and the light source are both mounted on the mounting seat; the camera module is located at the distal end of the insertion part, the instrument tube is inserted into the insertion tube, and the distal end of the instrument tube is arranged corresponding to the first channel space of the mounting seat to communicate with the outside through the first channel space; the mounting seat is detachably connected to at least one of the insertion tube and the instrument tube so as to be able to be removed at the distal end of the insertion part and recover the camera module.

[0007] In some embodiments, the instrument tube is inserted into the first channel space, the mounting seat is movably sleeved on the outer circumference of the instrument tube, and the mounting seat is detachably connected to the insertion tube.

[0008] In some embodiments, the instrument tube is inserted into the first channel space, and the mounting seat is detachably connected to the instrument tube.

[0009] In some embodiments, when the mounting seat is movably sleeved on the instrument tube, the mounting seat is limitedly engaged with the instrument tube along the circumference of the instrument tube.

[0010] In some embodiments, the mounting seat has a first limiting structure disposed in the first channel space, wherein: the instrument tube has a second limiting structure disposed on its outer circumferential surface, and the first limiting structure cooperates with the second limiting structure along the circumferential limiting direction of the instrument tube; or, the insertion portion also includes an adapter seat, the adapter seat is fixedly sleeved on the outer circumference of the instrument tube, the instrument tube is inserted into the first channel space through the adapter seat, and the adapter seat has a third limiting structure disposed on its outer circumferential surface, and the first limiting structure cooperates with the third limiting structure along the circumferential limiting direction of the instrument tube.

[0011] In some embodiments, the adapter has a second channel space, and the adapter is fixedly sleeved on the outer circumference of the instrument tube through the second channel space. The adapter also includes a radial thickening portion surrounding the second channel space, and the third limiting structure includes the radial thickening portion; the mounting seat includes a radial recessed portion distributed around the first channel space, and the first limiting structure includes the radial recessed portion, and the radial thickening portion and the radial recessed portion are matched along the circumferential limiting direction of the instrument tube; in the circumference of the camera module around the first channel space, the camera and the light source are spaced apart, and the mounting seat includes a radial recessed portion distributed between the camera and the light source, and / or the mounting seat includes a radial recessed portion distributed between the two light sources.

[0012] In some embodiments, the adapter seat includes a positioning and mounting section and a connecting section distributed along its axial direction. The adapter seat is inserted into the first channel space through the positioning and mounting section, and the positioning and mounting section includes a third limiting structure; the insertion tube includes a bending tube and an outer sleeve, the bending tube is movably inserted into the outer sleeve, and the connecting section is detachably connected to the distal end of the outer sleeve to limit the bending tube in the outer sleeve, and after the adapter seat is removed from the outer sleeve, the bending tube is allowed to withdraw from the outer sleeve.

[0013] In some embodiments, the outer circumferential surface of the mounting seat, the outer circumferential surface of the adapter seat and the outer circumferential surface of the outer sleeve are flush.

[0014] In some embodiments, the insertion portion further includes a first skin, and the connection between the mounting seat and the insertion tube is covered by the first skin, and a detachable connection is achieved through the first skin.

[0015] In some embodiments, the insertion portion further includes a wiring harness and a second skin, the second skin is coated on the outer circumference of the insertion tube, the wiring harness is used to connect the camera module and the handle side of the endoscope, and the wiring harness extends between the second skin and the insertion tube.

[0016] In a second aspect, an embodiment of the present application provides an endoscope, comprising the insertion portion described in the embodiment of the first aspect of the present application.

[0017] The technical solution adopted in this application can achieve the following beneficial effects: In the insertion part disclosed in the embodiment of the present application, by detachably connecting the mounting base of the camera module to at least one of the insertion tube and the instrument tube, the camera module can be removed from the insertion tube and / or the instrument tube.

[0018] Compared with the technical route of integrating the camera module, insertion tube and instrument tube into one in the related art, the insertion part disclosed in the embodiment of the present application is based on the detachable capability of the camera module, which can not only simplify the assembly process of the insertion part itself, but also greatly reduce the difficulty of disassembling the camera module. At the same time, no delicate operation is required during the disassembly process, so it can ensure that the camera module is disassembled intact and recycled, thereby achieving effective control of costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0020] In the attached picture: Figure 1 It is a schematic diagram of the structure of the insertion part disclosed in some embodiments of the present application; Figure 2 It is an exploded schematic diagram of the insertion part disclosed in some embodiments of the present application; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 for Figure 2 A partial enlarged view of point B in the middle; Figure 5 A schematic diagram of the structure of a front-end component disclosed in some embodiments of the present application; Figure 6 It is a schematic diagram of the structure of the adapter disclosed in some embodiments of the present application; Figure 7 It is another structural schematic diagram of the insertion part disclosed in some embodiments of the present application; Figure 8 for Figure 7 A partial enlarged view of point C in the middle; Fig. 9 for Figure 7 A partial enlarged view of point D in the middle.

[0021] Description of reference numerals: 100-front-end assembly, 110-camera module, 111-mounting seat, 111a-first channel space, 111b-first limiting structure, 112-camera, 113-light source, 114-circuit board, 120-adapter, 120a-second channel space, 121-positioning and mounting section, 121a-third limiting structure, 122-connecting section, 122a-peripheral side wall, 122a1-second clamping portion, 122b- Support tube portion, 122b1-wire hole, 122c-slot, 200-insertion tube, 210-bending tube, 210a-snake bone joint, 210b-riveted portion, 211-first clamping portion, 220-lining tube, 221-first step portion, 230-outer sleeve, 230a-avoidance groove, 231-main body section, 232-thinning section, 300-instrument tube, 400-first skin, 500-wiring harness, 600-traction rope. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories 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".

[0024] In order to facilitate the understanding of the insertion portion and the endoscope provided in the embodiments of the present application, the relevant technologies are first introduced in conjunction with the application scenarios.

[0025] In response to the high cost of using existing endoscope technology, the inventors found through research that the main reason is the cost pressure caused by the abandonment of the camera module at the far end of the insertion part. Specifically, as a visual medical method, the endoscope needs to rely on the camera module at the far end of the insertion part to obtain images, and the camera module as a core component accounts for a large proportion of the cost. This is why endoscopes that use the handle side partial multiplexing method have limited effect on cost control.

[0026] In the related art, the camera module, the insertion tube and the instrument tube at the far end of the insertion part are integrated into one, and can be fixedly connected by integral injection molding, gluing, etc., to achieve a sealing effect. However, such an assembly method makes it very difficult to separate the camera module from other components. Due to the small size of the camera module, the separation operation requires very delicate operations, and the camera module is easily damaged during the separation process. Even if it is forcibly separated, the yield rate will be extremely low, and the purpose of cost control cannot be achieved.

[0027] In view of this, some embodiments of the present application provide an insertion portion for an endoscope.

[0028] See also Figure 1 to Figure 9 The insertion part disclosed in the embodiment of the present application includes a camera module 110, an insertion tube 200 and an instrument tube 300, wherein: the camera module 110 includes a mounting seat 111, a camera 112 and a light source 113, and the camera 112 and the light source 113 are both mounted on the mounting seat 111; the camera module 110 is located at the distal end of the insertion part, the instrument tube 300 is inserted into the insertion tube 200, and the distal end of the instrument tube 300 is arranged corresponding to the first channel space 111a of the mounting seat 111, so as to communicate with the outside through the first channel space 111a. With respect to the camera module 110, the mounting seat 111 is the basic structure of the camera module 110, which provides an installation foundation for the camera 112 and the light source 113, and of course, it can also play a protective role for these structures. In some embodiments, the camera 112 can be arranged on one side of the distal end surface of the mounting seat 111 to shoot the target part (such as a lesion) in the human body during the process of inserting the mirror. The light source 113 may be disposed on one side of the distal end surface of the mounting base 111 to provide lighting for the area facing the camera module 110. In some embodiments, the camera module 110 may further include a circuit board 114, and the camera 112 and the light source 113 are both connected to the circuit board 114. The circuit board 114 can supply power to the camera 112 and the light source 113, and is also used to achieve signal interaction. Of course, in the case where the camera module 110 is not provided with the circuit board 114, the camera 112 and the light source 113 may be connected by bare wires.

[0029] Regarding the insertion tube 200, it is the tubular body of the insertion part, which starts from the handle side of the endoscope and extends to the distal end of the insertion part. The insertion tube 200 has an axial channel, which is used to arrange the instrument tube 300, wiring, etc. It is worth noting that the insertion tube 200 has the ability of active bending. On the side of the insertion tube 200 close to its distal end, a bending tube 210 is provided therein. The bending tube 210 can be in the form of a riveted snake bone or an integrally cut bending tube 210, etc. The bending tube 210 can be pulled by a traction rope 600 to achieve the bending action of the active bending section. In the embodiment in which the bending tube 210 is a riveted snake bone, it includes a plurality of snake bone sections 210a connected in sequence, which can be referred to Figure 2 .

[0030] The instrument tube 300 is mainly used for inserting and removing treatment instruments, aspirating tissue fluid, etc. The proximal end of the instrument tube 300 is located in the handle of the endoscope, and is connected to the camera module 110 by extending and arranging inside the insertion tube 200. Among them, the mounting seat 111 of the camera module 110 has a first channel space 111a, which is used to correspond to the instrument tube 300 and allow the instrument tube 300 to communicate with the front side space at the distal end of the insertion part, so as to realize the functions of instrument insertion and removal.

[0031] In the embodiment of the present application, the specific matching relationship between the mounting seat 111 and the instrument tube 300 through the first channel space 111a is not limited. For example, Figure 1~Figure 3 As shown, the first channel space 111a can be used as the installation space of the instrument tube 300, so that the instrument tube 300 can be inserted into the first channel space 111a. Of course, under such a setting, it is necessary to consider that the instrument tube 300 has certain supporting performance, and the instrument tube 300 near the distal end can also be set to have a larger rigidity to provide a reliable support effect.

[0032] Alternatively, the instrument tube 300 may also be connected to the proximal opening of the first channel space 111a. In this way, the instrument tube 300 can still be connected to the outside even if it is not inserted into the first channel space 111a. Of course, under such a setting, it is necessary to consider the situation where the instrument tube 300 is deformed by force when the insertion portion is bent and separated from the first channel space 111a. For this purpose, a constraint structure (such as a constraint sleeve) can be adaptively set in the insertion tube 200 to ensure that the instrument tube 300 is still connected to the first channel space 111a even if it is deformed by force.

[0033] Meanwhile, in the embodiment of the present application, the mounting seat 111 is detachably connected to at least one of the insertion tube 200 and the instrument tube 300, so as to be removed at the distal end of the insertion portion and recover the camera module 110. The embodiment of the present application does not limit the specific detachable connection method of the mounting seat 111, and it can be detachably connected only to the insertion tube 200 or the instrument tube 300, for example, Figure 7 and Figure 8 As shown, the mounting seat 111 is only detachably connected to the insertion tube 200 (mainly achieved through the first skin 400 described later in the figure), or, the mounting seat 111 can also be detachably connected to both the insertion tube 200 and the instrument tube 300 at the same time. In this case, when the camera module 110 is recovered, the two sets of detachable connection relationships need to be released. Of course, the connection reliability will be better.

[0034] It can be understood that, as mentioned above, the mounting seat 111 is the mounting base of the camera module 110. With such a configuration, the camera module 110 as a whole is detachably connected to at least one of the insertion tube 200 or the instrument tube 300. The detachable connection belongs to a fixed connection, so when the mounting seat 111 is connected to the insertion tube 200 and / or the instrument tube 300, the camera module 110 can be fixedly installed at the far end of the insertion part, so that the camera module 110 can be ensured not to be detached during use, for example, when the insertion part is bent. In the type of disposable endoscope, the requirement for the reliability of the installation can be reduced in adaptability. In addition, it is precisely because the mounting seat 111 is detachably connected to the insertion tube 200 and / or the instrument tube 300 that the camera module 110 has the ability to be removed from the insertion tube 200 and / or the instrument tube 300, thereby realizing the recycling and reuse of the camera module 110.

[0035] Compared with the related art, the insertion part of the embodiment of the present application is completely different from the technical route of integrating the camera module 110, the insertion tube 200 and the instrument tube 300 into one by detachably connecting the camera module 110 to its distal end. This can not only simplify the assembly process of the insertion part itself (no need for welding, bonding, etc.), but also greatly reduce the difficulty of disassembling the camera module 110. At the same time, no delicate operation is required during the disassembly process. Therefore, it can ensure that the camera module 110 is disassembled intact and recycled and reused, thereby achieving effective control of costs.

[0036] It is worth noting that the embodiments of the present application do not limit the application scenarios of the above-mentioned insertion part, which can be used in disposable endoscopes as well as reusable endoscopes.

[0037] In some embodiments, Figure 1~Figure 3 , Figure 6~Figure 8As shown, the instrument tube 300 is inserted into the first channel space 111a, the mounting seat 111 is movably sleeved on the outer periphery of the instrument tube 300, and the mounting seat 111 is detachably connected to the insertion tube 200. It can be understood that under such a structural layout, the mounting seat 111 is sleeved on the instrument tube 300, and the instrument tube 300 can provide support for the mounting seat 111 and the camera module 110 as a whole. The instrument tube 300 and the first channel space 111a can be directly aligned without setting an additional structure to support the instrument tube 300 inside the insertion tube 200 or bonding the instrument tube 300 to the proximal end of the mounting seat 111. In this way, the structural layout is greatly simplified. When the camera module 110 is assembled, the camera module 110 can be sleeved on the instrument tube 300 through the mounting seat 111, and then the camera module 110 is pushed to move on the instrument tube 300 until it moves to a preset position, and then the mounting seat 111 can be connected to the insertion tube 200. When the endoscope needs to be discarded, the detachable connection between the mounting base 111 and the insertion tube 200 can be released, and then the camera module 110 can be held and moved axially along the instrument tube 300 and withdrawn, so as to recover the camera module 110, which is extremely convenient to operate.

[0038] In this example, since the mounting seat 111 is connected to the insertion tube 200, and the insertion tube 200 is sleeved on the outside of the instrument tube 300, when the mounting seat 111 and the insertion tube 200 are connected and assembled, there is more sufficient operating space and a better operating field of vision, which improves the convenience of connecting the two.

[0039] In some other embodiments, the instrument tube 300 is inserted into the first channel space 111a, and the mounting seat 111 is detachably connected to the instrument tube 300. The beneficial effects of the instrument tube 300 being inserted into the first channel space 111a of the mounting seat 111 can be referred to the above content and will not be repeated. The difference is that when the camera module 110 is assembled, the camera module 110 is pushed to move on the instrument tube 300, and then the mounting seat 111 is connected to the instrument tube 300 after moving to a preset position. When the endoscope needs to be discarded, the detachable connection between the mounting seat 111 and the instrument tube 300 can be released, and then the camera module 110 can be held and moved along the axial direction of the instrument tube 300 and withdrawn, so as to recycle the camera module 110, and the operation is extremely convenient.

[0040] In this example, the mounting seat 111 is connected to the instrument tube 300, and the instrument tube 300 is inserted into the insertion tube 200. The detachable connection structure between the mounting seat 111 and the instrument tube 300 is located inside the insertion part. This will not increase the radial size of the insertion part, and the structure is more compact, which is conducive to making the insertion part thinner, meeting the development needs of endoscopic technology.

[0041] Of course, in the solution where the mounting seat 111 is only detachably connected to the instrument tube 300, the instrument tube 300 needs to be adaptively selected from a pipe material with certain support performance to support the mounting seat 111 and the camera module 110 as a whole. In addition, in the solution where the mounting seat 111 is only detachably connected to the instrument tube 300, a traction force can be applied to the mounting seat 111 through the instrument tube 300 to pull the mounting seat 111 against the distal end of the insertion tube 200 to provide support through the insertion tube 200; further, after the mounting seat 111 is installed in place, the distal end of the insertion tube 200 has a radial support structure for supporting the mounting seat 111. Therefore, there may be no detachable connection between the mounting seat 111 and the insertion tube 200.

[0042] The embodiments of the present application do not limit the specific detachable connection relationship of the mounting seat 111 relative to the instrument tube 300 and / or the insertion tube 200. Exemplarily, it can be a threaded connection, a snap connection, a key connection, etc.

[0043] It is worth noting that in the above-mentioned embodiment where the mounting seat 111 is sleeved on the instrument tube 300, if the detachable connection relationship between the mounting seat 111 and the instrument tube 300 and / or the insertion tube 200 is a snap-fit ​​relationship, then when the mounting seat 111 is moved into place along the instrument tube 300, the snap-fit ​​can be achieved, and then the snap-fit ​​can be released by holding the mounting seat 111 back. It can be seen that the assembly process and the recovery process of the camera module 110 are very convenient.

[0044] In another specific embodiment, Figure 1~Figure 3 , Figure 6~Figure 8 As shown, the insertion portion further includes a first skin 400 , and the connection between the mounting seat 111 and the insertion tube 200 is covered by the first skin 400 , and a detachable connection is achieved through the first skin 400 .

[0045] It is understandable that at the distal end of the insertion portion of the endoscope, the camera module 110 and the insertion tube 200 usually need to be covered with a skin to ensure that the connection between the two is sealed. In this example, in addition to achieving a sealed fit by covering the connection between the mounting seat 111 and the insertion tube 200, the first skin 400 also plays a role in fixing the connection between the camera module 110 and the insertion tube 200. When the endoscope needs to be discarded, the first skin 400 can be torn off to release its constraints on the mounting seat 111 and the insertion tube 200, so that the camera module 110 can be easily disassembled without violent disassembly, avoiding damage to the camera module 110, thereby achieving the technical purpose of controlling costs.

[0046] Furthermore, the first skin 400 can extend from the distal end of the insertion part to the proximal end of the insertion part. As a whole, the first skin 400 has a larger covering area with the insertion part, and the connection reliability between the two is higher, which will have a better connection effect on the mounting seat 111 and the insertion tube 200.

[0047] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, when the mounting seat 111 is movably sleeved on the instrument tube 300 , the mounting seat 111 is limitedly engaged with the instrument tube 300 along the circumference of the instrument tube 300 .

[0048] It can be understood that in order to achieve convenient disassembly of the mounting seat 111, the mounting seat 111 and the instrument tube 300 will not adopt the usual fixed connection method of gluing or integral injection molding. In this way, when the bending tube 210 in the insertion portion is pulled and bent, the instrument tube 300 will be deformed by the resistance pressure, and the instrument tube 300 is likely to rotate relative to the mounting seat 111, which can easily cause the instrument tube 300 to twist in the mounting seat 111. Due to the friction between the instrument tube 300 and the mounting seat 111, when the force on the instrument tube 300 disappears, the twisting of the instrument tube 300 may still be difficult to recover, which can easily cause the instrument tube 300 to maintain twisting near its distal end, resulting in wrinkles and collapse, thereby affecting the normal function of the instrument channel.

[0049] In this regard, this example cooperates the mounting seat 111 with the instrument tube 300 in the circumferential upper limit, so that even if the portion of the instrument tube 300 inserted into the tube 200 is twisted by force, the portion of the instrument tube 300 inserted into the mounting seat 111 will not be twisted and deformed due to the restriction of the above-mentioned limit cooperation relationship. Therefore, it is possible to prevent the instrument tube 300 in the mounting seat 111 from wrinkling or collapsing, thereby ensuring that the instrument channel is unobstructed and can always be used normally.

[0050] In some embodiments, the mounting seat 111 has a first limiting structure 111b disposed in the first channel space 111a, wherein: the instrument tube 300 has a second limiting structure disposed on its outer peripheral surface, and the first limiting structure 111b and the second limiting structure cooperate in the circumferential limiting direction of the instrument tube 300. It should be understood that in this example, the second limiting structure is directly disposed on the instrument tube 300, so the circumferential limiting cooperation between the mounting seat 111 and the instrument tube 300 is achieved by direct contact cooperation between the two, and such a cooperation relationship is relatively simple, and both disassembly and assembly are more convenient.

[0051] The embodiment of the present application does not limit the specific types of the first limiting structure 111b and the second limiting structure. For example, they can be a protrusion and a depression respectively, and the two can achieve limiting cooperation through clamping. In the case where the second limiting structure is a protrusion, the part of the instrument tube 300 corresponding to the second limiting structure is radially thickened, which can also enhance the rigidity of the instrument tube 300 near its distal end, thereby improving the support performance.

[0052] In some other embodiments, Figure 2 , Figure 3 and Figure 5 As shown, the mounting seat 111 has a first limiting structure 111b disposed in the first channel space 111a, wherein: the insertion portion further includes an adapter seat 120, the adapter seat 120 is fixedly sleeved on the outer circumference of the instrument tube 300, the instrument tube 300 is plugged into the first channel space 111a through the adapter seat 120, and the adapter seat 120 has a third limiting structure 121a disposed on its outer circumference, and the first limiting structure 111b and the third limiting structure 121a cooperate along the circumferential limiting direction of the instrument tube 300. In order to facilitate the distinction and definition of each structure, in the embodiment of the present application, it can be defined that the insertion portion includes a front end assembly 100 located at its distal end, and the front end assembly 100 includes a camera module 110 and an adapter seat 120.

[0053] It can be understood that under such a structural layout, the mounting seat 111 is sleeved on the adapter seat 120 on the outer periphery of the instrument tube 300, that is, the camera module 110 can be disassembled by moving relative to the adapter seat 120. In this example, the third limiting structure 121a is provided on the adapter seat 120, and the instrument tube 300 can be fixedly assembled with the adapter seat 120 by means such as bonding, clamping, etc. In this way, the circumferential limiting cooperation of the mounting seat 111 relative to the adapter seat 120 can be achieved in combination with the first limiting structure 111b and the third limiting structure 121a, thereby indirectly achieving the circumferential limiting cooperation between the mounting seat 111 and the instrument tube 300.

[0054] It is worth noting that, in this example, the third limiting structure 121a is formed on the adapter 120, and there is no need to process a limiting structure that can cooperate with the first limiting structure 111b on the outer circumferential surface of the instrument tube 300. Considering that the instrument tube 300 is small in size and is a flexible tube body, it is extremely difficult to process a limiting structure thereon, while the adapter 120 is relatively larger in size and has a certain hardness, and can be formed by methods such as injection molding. Therefore, this example avoids more difficult processing methods, which is beneficial to improving production and processing efficiency and reducing costs; in addition, the hardness of the adapter 120 is greater than that of the instrument tube 300. Through the limiting cooperation of the adapter 120 and the mounting seat 111, the cooperation reliability and stability of the two can be improved, and it can also avoid the transmission of the resistance force to the instrument tube 300 during the limiting cooperation, thereby preventing the instrument tube 300 from being deformed or damaged due to force.

[0055] In order to facilitate the passing of the wire harness 500 , the adapter 120 may be provided with a wire hole 122 b 1 for the wire harness 500 to pass through.

[0056] The embodiments of the present application do not limit the specific types of the first limiting structure 111b and the third limiting structure 121a. For example, they can be a protrusion and a depression respectively, and the two can achieve limiting cooperation through snap connection.

[0057] Of course, in the embodiment of the present application, there are other types of circumferential limiting structures of the mounting seat 111 relative to the instrument tube 300 (or the adapter 120), and the circumferential limiting cooperation between them can be achieved through a structure with a non-circular contour (including the first limiting structure 111b, the second limiting structure and the third limiting structure 121a). Exemplarily, the outer circumferential contour of the instrument tube 300 can be an ellipse, which can achieve circumferential limiting cooperation with the mounting seat 111; or, the outer circumferential contour of the adapter 120 can be a square, which can achieve circumferential cooperation with the mounting seat 111.

[0058] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, the adapter 120 has a second channel space 120a, and the adapter 120 is fixedly sleeved on the outer periphery of the instrument tube 300 through the second channel space 120a. The adapter 120 also includes a radially thickened portion surrounding the second channel space 120a, and the third limiting structure 121a includes a radially thickened portion; the mounting seat 111 includes a radially recessed portion distributed around the first channel space 111a, and the first limiting structure 111b includes a radially recessed portion, and the radially thickened portion and the radially recessed portion are matched along the circumferential limiting direction of the instrument tube 300; in the circumference of the camera module 110 around the first channel space 111a, the camera 112 and the light source 113 are distributed at intervals, and the mounting seat 111 includes a radially recessed portion distributed between the camera 112 and the light source 113, and / or the mounting seat 111 includes a radially recessed portion distributed between the two light sources 113.

[0059] It can be understood that the radial size of the insertion portion of the endoscope is relatively limited. For example, if the insertion portion of the bronchoscope is too large, it will be difficult to enter the deeper bronchus; so this also limits the radial size of the camera module 110 located at the distal end of the insertion portion. In this example, an adapter 120 is added between the instrument tube 300 and the mounting seat 111. The adapter 120 will occupy the space at the distal end of the insertion portion. It is limited by the radial size limit of the entire front end and the space requirements of the camera 112, the light source 113 and the instrument tube 300 (they all need to occupy a certain space to have better functions, for example, the instrument tube 300 must be set larger to provide better suction performance and ensure the smoothness of the instrument in and out). In this way, the radial size of the adapter 120 can be made thin, but this will result in low strength of the adapter 120, which is easy to be damaged due to force during the assembly process or use, thereby affecting the mirror function.

[0060] In this example, the above problem is solved by setting the third limiting structure 121a of the adapter 120 as a radially thickened portion. From the structural form of the radially thickened portion, it will occupy more radial dimensions, thus improving the strength of the adapter 120, but it will also occupy the layout space of other structures such as the camera 112 and the instrument tube 300. In this example, the mounting seat 111 includes a radial recessed portion distributed between the camera 112 and the light source 113, and / or includes a radial recessed portion distributed between the light sources 113. In this case, when the adapter 120 and the mounting seat 111 are installed in place, the radially thickened portion on the adapter 120 will also be arranged in the area between the camera 112 and the light source 113, and / or in the area between the light sources 113. These areas are all areas outside the space occupied by structures such as the camera 112, the light source 113 and the instrument tube 300. Therefore, arranging the radially thickened portion of the adapter 120 in these areas will not cause layout space conflicts with the above-mentioned structures. Therefore, while ensuring that the camera 112, the light source 113 and the instrument tube 300 occupy a reasonable layout space, it is possible to ensure that the adapter 120 has better strength and improved damage resistance.

[0061] In some embodiments, Figure 2 , Figure 3 , Figure 5~Figure 8 As shown, the adapter seat 120 includes a positioning and mounting section 121 and a connecting section 122 distributed along its axial direction. The adapter seat 120 is inserted into the first channel space 111a through the positioning and mounting section 121, and the positioning and mounting section 121 includes a third limiting structure 121a; the insertion tube 200 includes a bending tube 210 and an outer sleeve 230, and the bending tube 210 is movably inserted into the outer sleeve 230. The connecting section 122 is detachably connected to the distal end of the outer sleeve 230 to limit the bending tube 210 in the outer sleeve 230, and after the adapter seat 120 is removed from the outer sleeve 230, the bending tube 210 is allowed to withdraw from the outer sleeve 230.

[0062] It can be understood that in this example, the adapter seat 120 fixedly connected to the instrument tube 300 realizes a positioning match with the mounting seat 111 through the positioning mounting section 121, and specifically realizes a circumferential limit match through the third limit match; at the same time, the adapter seat 120 of this example can also be detachably connected to the outer sleeve 230 through the connecting section 122, wherein, when the two are connected, the adapter seat 120 can axially limit the bending tube 210 in the outer sleeve 230 to ensure that the bending tube 210 realizes a bending action in the outer sleeve 230 (the bending tube 210 can be pulled by the traction rope 600 to realize a bending action), and when the two are separated, the bending tube 210 can be pulled out of the outer sleeve 230 to recover the bending tube 210.

[0063] In the embodiment where the bending tube 210 is a riveted snake bone, it has a riveted portion 210b located between the snake bone joints 210a, and an avoidance groove 230a for avoiding the riveted portion 210b may be opened on the inner wall of the outer sleeve 230. It can be understood that the avoidance groove 230a is actually a local thinning of the outer sleeve 230, so that the riveted portion 210b of the bending tube 210 is accommodated in the avoidance groove 230a, which can reduce the radial size of the entire insertion part; in addition, the avoidance groove 230a can guide the riveted portion 210b of the bending tube 210, and improve the smoothness of the bending tube 210 entering and exiting the outer sleeve 230 by preventing the bending tube 210 from rotating circumferentially relative to the outer sleeve 230.

[0064] In the embodiment where the curved tube 210 can be recycled and reused, the proximal end of the curved tube 210 can be pressed and limited by the liner tube 220 in the outer sleeve 230. Further, at least one of the curved tube 210 and the liner tube 220 is provided with a first step portion 221 at the corresponding abutting end, and the curved tube 210 and the liner tube 220 are sleeved and matched through the first step portion 221. It can be understood that the curved tube 210 and the liner tube 220 can be radially limited after being sleeved through the first step portion 221, thereby preventing separation when the insertion portion is bent.

[0065] Based on the above analysis, it can be known that based on the solution of this example, the camera module 110 can be recycled and reused, and the bending tube 210 can also be recycled and reused, which can further reduce the use cost of the endoscope.

[0066] In a specific embodiment, the connecting section 122 may include a support tube portion 122b arranged on the proximal side of the adapter 120 and a peripheral side wall 122a arranged on the circumference of the support tube portion 122b, and a slot 122c is defined between the support tube portion 122b and the peripheral side wall 122a, and the slot 122c can be used to plug into the distal end of the insertion tube 200, and the support tube portion 122b can be used to fit the bending tube 210 to radially support the bending tube 210, and to share the pressure exerted by the bending tube 210 when the insertion portion is bent, thereby reducing the risk of the outer sleeve 230 being damaged by the pressure.

[0067] Furthermore, a first clamping portion 211 is provided at the distal end of the bending tube 210, and a second clamping portion 122a1 is provided on the peripheral side wall 122a of the adapter 120. When the insertion tube 200 is inserted into the slot 122c, the first clamping portion 211 and the second clamping portion 122a1 can be clamped and matched, and the distal end of the outer sleeve 230 is pressed and fixed therebetween. This arrangement can not only improve the assembly efficiency, but also after the matching relationship between the first clamping portion 211 and the second clamping portion 122a1 is released, the camera module 110 and the bending tube 210 can be recovered at the same time, which significantly improves the recovery efficiency.

[0068] In order to facilitate the pressing and fixing of the outer sleeve 230 between the first clamping portion 211 and the second clamping portion 122a1, the outer sleeve 230 may include a main section 231 and a thinning section 232 arranged at the distal end of the main section 231, and the radial thickness of the thinning section 232 is smaller than the radial thickness of the main section 231. When the outer sleeve 230 and the bending tube 210 are inserted into the slot 122c, the thinning section 232 is pressed and fixed between the first clamping portion 211 and the second clamping portion 122a1.

[0069] It can be understood that the main section 231 can maintain the preset radial thickness so that the outer sleeve 230 has sufficient rigidity and strength, while the thinned section 232 has a smaller radial thickness, lower rigidity and is more likely to deform, so that it can be smoothly clamped between the first clamping portion 211 and the second clamping portion 122a1. At the same time, the thinned section 232 can release internal stress through deformation, thereby preventing the pressure parts on the adapter 120, the outer sleeve 230 and the bending tube 210 from being damaged.

[0070] In some embodiments, Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the outer circumference of the mounting seat 111, the outer circumference of the adapter seat 120 and the outer circumference of the outer sleeve 230 are flush. It can be understood that, under such a configuration, there is no uneven surface at the connection between the mounting seat 111, the adapter seat 120 and the outer sleeve 230, so that the outer circumference of the insertion part near the distal end becomes smooth, which is conducive to the insertion of the distal end of the insertion part into the human body cavity, and also avoids scratching the cavity wall, weakening the patient's discomfort.

[0071] The embodiments of the present application do not impose any specific restrictions on the matching structure of the mounting seat 111, the adapter seat 120 and the outer sleeve 230 to achieve the above-mentioned outer peripheral surface flushing feature. For example, at least part of the three can be matched by axial abutment, which facilitates the realization of outer peripheral surface flushing, wherein the instrument tube 300 can pull the adapter seat 120 to press the adapter seat 120 against the outer sleeve 230; or, at least part of the three can be matched with each other through a step structure to achieve outer peripheral surface flushing.

[0072] In some embodiments, the insertion portion further includes a harness 500 and a second skin (not shown in the drawings), the second skin is coated on the outer circumference of the insertion tube 200, the harness 500 is used to connect the camera module 110 and the handle side of the endoscope, and the harness 500 extends between the second skin and the insertion tube 200. It should be understood that the proximal end of the camera module 110 will lead out the harness 500 connected to the handle side of the endoscope, specifically to the electronic structure on the handle, such as the circuit board 114 or the electrical connection interface, to supply power or realize signal interaction. In the embodiment of the present application, only the camera module 110 can be recycled, so the wiring harness 500 on the rear side of the camera module 110 needs to be desoldered when the camera module 110 is disassembled; of course, the camera module 110 and the wiring harness 500 can also be recycled together. In this case, the instrument tube 300 is usually connected to the insertion tube 200 near the distal end by injecting glue, which can achieve sealing and provide support for the instrument tube 300. However, this will increase the difficulty of recycling the wiring harness 500. Because the structure of the endoscope is relatively precise, it is very difficult to peel the wiring harness 500 from the above-mentioned colloid, and the wiring harness 500 is prone to desoldering and wire breakage during the wire removal process, and it is even easy to damage the camera module 110 and the bending tube 210 that need to be recycled. More valuable structures.

[0073] In this case, the wire harness 500 drawn from the camera module 110 is arranged on the outer periphery of the insertion tube 200, and the wire harness 500 is extended and arranged between the insertion tube 200 and the second skin. In this way, when the wire harness 500 and the camera module 110 need to be recovered together, the second skin can be torn off first, and after the constraint is lost, the camera module 110 can be easily removed together with the wire harness 500 to achieve recovery. It can be seen that the above scheme does not require the wire removal process from the inside of the insertion tube 200, the operation is simpler, and damage to the wire harness 500, the camera module 110, the bending tube 210, etc. can be avoided.

[0074] It is worth noting that the second skin in this example may be the aforementioned first skin 400, and of course the two may also be different.

[0075] The skin structure (including the first skin 400 and the second skin) mentioned in the embodiment of the present application may be a heat shrinkable film or a covering structure connected to the insertion tube 200 etc. by means such as bonding.

[0076] See also Figure 1 to Figure 9 Some embodiments of the present application provide an endoscope, which includes the insertion part mentioned above, thereby having the beneficial effects of the aforementioned insertion part, which will not be repeated.

[0077] The endoscope involved 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.

[0078] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0079] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An insertion portion for an endoscope, characterized in that: The insertion part includes a camera module, an insertion tube and an instrument tube, wherein: The camera module comprises a mounting seat, a camera and a light source, wherein the camera and the light source are both mounted on the mounting seat; The camera module is located at the distal end of the insertion part, the instrument tube is inserted into the insertion tube, and the distal end of the instrument tube is arranged corresponding to the first channel space of the mounting seat to communicate with the outside through the first channel space; the mounting seat is detachably connected to at least one of the insertion tube and the instrument tube so as to be able to remove it at the distal end of the insertion part and recover the camera module.

2. The insertion portion according to claim 1, characterized in that: The instrument tube is inserted into the first channel space, the mounting seat is movably sleeved on the outer periphery of the instrument tube, and the mounting seat is detachably connected to the insertion tube; Alternatively, the instrument tube is inserted into the first channel space, and the mounting seat is detachably connected to the instrument tube.

3. The insertion portion according to claim 2, characterized in that: When the mounting seat is movably sleeved on the instrument tube, the mounting seat is positionally matched relative to the instrument tube along the circumference of the instrument tube.

4. The insertion portion according to claim 3, characterized in that: The mounting seat has a first limiting structure arranged in the first channel space, wherein: The instrument tube has a second limiting structure arranged on its outer circumferential surface, and the first limiting structure cooperates with the second limiting structure in a circumferential direction of the instrument tube; Alternatively, the insertion portion also includes an adapter seat, which is fixedly sleeved on the outer circumference of the instrument tube, and the instrument tube is inserted into the first channel space through the adapter seat, and the adapter seat has a third limiting structure arranged on its outer circumferential surface, and the first limiting structure and the third limiting structure cooperate along the circumferential limiting direction of the instrument tube.

5. The insertion portion according to claim 4, characterized in that: The adapter has a second channel space, the adapter is fixedly sleeved on the outer circumference of the instrument tube through the second channel space, the adapter also includes a radially thickened portion surrounding the second channel space, and the third limiting structure includes the radially thickened portion; the mounting seat includes radially recessed portions distributed around the first channel space, the first limiting structure includes the radially recessed portions, and the radially thickened portion and the radially recessed portion are limitedly matched along the circumferential direction of the instrument tube; In the circumferential direction of the camera module around the first channel space, the camera and the light source are spaced apart, and the mounting seat includes the radial recessed portion distributed between the camera and the light source, and / or the mounting seat includes the radial recessed portion distributed between two of the light sources.

6. The insertion portion according to claim 4, characterized in that: The adapter seat includes a positioning installation section and a connecting section distributed along its axial direction, the adapter seat is inserted into the first channel space through the positioning installation section, and the positioning installation section includes the third limiting structure; The insertion tube includes a bending tube and an outer sleeve. The bending tube is movably inserted into the outer sleeve. The connecting section is detachably connected to the distal end of the outer sleeve to limit the bending tube in the outer sleeve and allow the bending tube to withdraw from the outer sleeve after the adapter is removed from the outer sleeve.

7. The insertion portion according to claim 6, characterized in that The outer circumferential surface of the mounting seat, the outer circumferential surface of the adapter seat and the outer circumferential surface of the outer sleeve are flush.

8. The insertion portion according to any one of claims 1 to 7, characterized in that: The insertion portion further includes a first covering, and a connection between the mounting seat and the insertion tube is covered by the first covering, and a detachable connection is achieved through the first covering.

9. The insertion portion according to any one of claims 1 to 7, characterized in that: The insertion portion also includes a wiring harness and a second skin, wherein the second skin is coated on the outer circumference of the insertion tube, and the wiring harness is used to connect the camera module and the handle side of the endoscope, and the wiring harness is extended between the second skin and the insertion tube.

10. An endoscope, characterized in that: The invention comprises the insertion part according to any one of claims 1 to 9.

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