A postoperative anastomosis drainage system with a reusable image acquisition unit

Abstract

The present application relates to a kind of postoperative anastomotic mouth drainage systems with reusable image acquisition part, belong to medical instrument technical field.The system includes disposable catheter main body, middle section observation connecting section, transparent observation part, image acquisition part installation site, at least one detachable image acquisition part, one or more external devices and connecting structure.Image acquisition part is via transparent observation part and collects anastomotic mouth area image, and is powered and / or data communication is realized with one or more external devices by connecting structure;Middle section observation connecting section and / or its adjacent area is provided with at least one drainage opening communicated with drainage channel.The disposable catheter main body is the disposable replacement part contacted with body fluid, and image acquisition part and / or one or more external devices are reusable parts.While giving consideration to long-term indwelling continuous observation and drainage, reduce the disposable consumption of high-value electronic components, reduce the risk of cross contamination.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a system that has a transparent observation section and a detachable image acquisition section installed in the middle of a catheter, and is used for continuous observation and drainage of the anastomosis area after surgery. Background Technology

[0002] Currently, most drainage devices used in clinical practice for the postoperative anastomotic area are primarily for passive drainage, decompression, or isolation. They typically use gravity or negative pressure suction to drain fluid, blood, or secretions from the body cavity. While these devices can achieve basic drainage, they generally lack the ability to provide continuous imaging of the area adjacent to the anastomosis.

[0003] Some existing visualization catheters or imaging aids place the image acquisition component at the distal end of the catheter, mainly for insertion navigation or short-term observation. There are also solutions that integrate the camera module with disposable tubing, but these typically make it difficult to provide stable and continuous visualization of the mid-section region near the anastomosis during long-term placement. Designing the camera, image processing circuitry, and other electronic components as disposable consumables would significantly increase clinical usage costs; reusing them entirely poses a risk of cross-contamination.

[0004] The postoperative recovery process of the anastomotic area typically requires monitoring of local tissue condition, healing progress, exudation, and any suspicious signs related to ischemia or anastomotic leakage risk. However, existing drainage devices usually only allow for fluid drainage and cannot continuously acquire image information reflecting changes in the local anastomotic condition during the indwelling period. While routine endoscopy or imaging examinations can provide image information, they are usually short-term and intermittent, making them unsuitable as a means of continuous dynamic monitoring during postoperative indwelling drainage.

[0005] Therefore, existing technologies still lack a drainage system that can achieve continuous observation in the area near the anastomosis while ensuring continuous drainage, and effectively separate disposable contaminated parts that come into contact with bodily fluids from high-value electronic components. Summary of the Invention

[0006] To address the problems in existing technologies, such as the unsuitability of distal catheter observation for long-term placement, the high cost of disposable electronic catheters, and the risk of cross-contamination from reuse, this invention provides a postoperative anastomotic drainage system with a reusable image acquisition unit.

[0007] The system can also continuously acquire image information of the area adjacent to the anastomosis while the catheter is properly placed and maintaining drainage function, in order to assist in the dynamic observation of the local condition and healing trend of the anastomosis.

[0008] The present invention adopts the following technical solution: A postoperative anastomotic drainage system with a reusable image acquisition unit, comprising: A disposable catheter body includes an insertion section for insertion into the body, a drainage channel extending along the insertion section, and a mid-section observation connection section located on the insertion section; wherein, the mid-section observation connection section is configured to correspond to the postoperative anastomosis area in the indwelling state, and the mid-section observation connection section is provided with a transparent observation part and an image acquisition part mounting position; the image acquisition part mounting position is located at or adjacent to the transparent observation part, and is configured to allow the image acquisition part mounted thereon to acquire image information of the anastomosis area through the transparent observation part; At least one image acquisition unit is detachably mounted on the image acquisition unit mounting position for acquiring image information of the anastomosis region; One or more external devices are used to receive, process, and / or output the data acquired by the image acquisition unit; A connection structure is provided for enabling power supply and / or data communication between the image acquisition unit and the one or more external devices; The intermediate observation connection section and / or its adjacent area are provided with at least one drainage opening communicating with the drainage channel; the disposable catheter body is a disposable replacement part that comes into contact with body fluids, and the image acquisition unit and / or the one or more external devices are reusable parts.

[0009] Specifically, after catheter placement, the anastomosis typically corresponds to the middle section of the inserted segment. The distal end of the catheter extends deeper into the body cavity to perform drainage and / or positioning functions, while the proximal end is used for connection to connecting structures and / or external devices. If the image acquisition unit is located at the distal end of the catheter, additional adjustments to the catheter position are often required to align the distal end with the anastomosis area, making it difficult to continuously and stably observe the target area under normal placement conditions. By placing the transparent observation unit and image acquisition unit in the middle observation connection segment, the catheter can maintain both distal drainage and proximal connection functions while continuously and stably observing the anastomosis area under normal placement conditions.

[0010] Specifically, the disposable catheter body is provided with at least one positioning structure for stably maintaining the mid-section observation connection segment in the area adjacent to the anastomosis.

[0011] Furthermore, the positioning structure includes two positioning structures spaced apart along the axial direction of the insertion segment, and the middle observation connection segment is located between the two positioning structures.

[0012] Furthermore, the two positioning structures are a proximal balloon and a distal balloon, which can be inflated independently, and the disposable catheter body has inflation paths that are respectively connected to the proximal balloon and the distal balloon.

[0013] Specifically, the connection structure is a wired connection structure, a wireless connection structure, or a combination of both.

[0014] Furthermore, the wired connection structure includes conductive lines embedded in the disposable catheter body, and the image acquisition unit forms a disconnectable electrical connection with the conductive lines through contacts, plug terminals, card slot electrical connectors, magnetic electrical connectors, or flexible circuits.

[0015] Furthermore, the image acquisition unit includes a wireless communication unit, and the image acquisition unit is wirelessly connected to the one or more external devices through the wireless communication unit.

[0016] Specifically, the image acquisition unit includes a built-in power module, which is a primary battery, a replaceable battery, or a rechargeable battery; in some embodiments, the image acquisition unit also includes a wireless charging receiver unit.

[0017] Specifically, the number of image acquisition units is two or more, and they are arranged at circumferential intervals along the middle observation connecting segment.

[0018] Furthermore, multiple image acquisition units are arranged facing different observation directions to achieve continuous observation of a larger area of ​​the anastomosis region.

[0019] Specifically, the image acquisition unit mounting position includes one or more of the following: mounting base, snap-fit ​​structure, slot structure, mounting cavity, positioning and limiting structure, and / or sealing structure.

[0020] In this invention, "proximity" means that the distance between the image acquisition unit mounting position and the transparent observation unit is sufficient to enable the image acquisition unit mounted on the mounting position to effectively acquire image information of the anastomosis area through the transparent observation unit. The specific distance can be set according to the field of view, focal length of the image acquisition unit and the size of the transparent observation unit.

[0021] In some embodiments, the transparent observation section constitutes an isolated observation interface between the image acquisition section and the fluid environment inside the catheter; the mounting position of the image acquisition section may be provided with a sealing structure and / or an installation cavity isolation structure to reduce the risk of body fluid entering the installation position.

[0022] Furthermore, the image acquisition unit mounting location also includes an electrical contact or plug for realizing an electrical connection between the image acquisition unit and the conductive line.

[0023] Furthermore, the image acquisition unit mounting location also includes a detachable battery base for supporting the image acquisition unit's built-in power module.

[0024] Specifically, it also includes an extended sensor disposed on the middle observation connection section and / or the image acquisition unit, wherein the extended sensor is one or more of a pressure, temperature, pH, impedance or flow sensor; the one or more external devices are used to monitor and / or prompt the information output by the extended sensor.

[0025] Specifically, the one or more external devices include one or more of a data receiving unit, a data processing unit, a data display unit, a data storage unit, and / or an alarm output unit; the one or more external devices are a single device or a combination of multiple devices that are communicatively connected to each other; the data processing includes one or more of image enhancement, continuous recording, and anomaly alerts.

[0026] A disposable catheter body, suitable for use with a reusable image acquisition unit, comprising: Inserted segment; A drainage channel extending along the insertion segment; The middle observation connection segment is located on the insertion segment. The middle observation connection segment is configured to correspond to the postoperative anastomosis area in the indwelling state. The middle observation connection segment is provided with a transparent observation part and an image acquisition part mounting position for detachable installation of the image acquisition part. A drainage opening communicating with the drainage channel, the drainage opening being located within the middle observation connection section and / or its adjacent area; an interface portion located at the proximal end, the interface portion being used to establish a power supply and / or data communication relationship with the connection structure and / or external devices; The disposable catheter body is a disposable replacement component that comes into contact with bodily fluids.

[0027] In some implementations, the process of using the aforementioned drainage system may include: The main body of the disposable catheter is inserted into the body, and the middle observation connecting segment is placed in place to correspond to the postoperative anastomosis area. The image acquisition unit is installed in the image acquisition unit mounting position, so that the image acquisition unit acquires image information of the anastomosis area through the transparent observation part, and transmits the image information to one or more external devices through the connection structure. While observing the anastomotic area, drainage is performed through the drainage channel and at least one drainage opening connected to it; After use, remove the image acquisition unit from its mounting position, clean and / or disinfect the reusable parts, and replace it with a new disposable catheter body for reuse.

[0028] The beneficial effects of this invention are as follows: By placing the image acquisition unit in the mid-section observation connection near the anastomosis, and designing the catheter body, which comes into contact with body fluids, as a disposable replacement component, while designing the image acquisition unit and / or external devices as reusable components, this approach can reduce the disposable consumption of high-value electronic components and minimize the risk of cross-contamination, while simultaneously accommodating long-term continuous observation and drainage. The mid-section observation position is spatially corresponding to or adjacent to the drainage opening, enabling synergistic observation and drainage functions. This facilitates continuous and stable comprehensive monitoring of the anastomosis area under normal catheter placement and lays the foundation for future expansion into connection methods, different functional modules, and data processing systems. Furthermore, by continuously acquiring image information of the area adjacent to the anastomosis during placement, this invention can also be used to assist in observing changes in the local condition of the anastomosis, healing trends, abnormal exudation, and suspicious image signs related to local ischemia or anastomotic leakage risk. Attached Figure Description

[0029] Figure 1 This is a system diagram of a postoperative anastomotic drainage system according to the present invention.

[0030] in, Figure 1 Specifically, it shows the overall relationship of the disposable catheter body being placed inside the body cavity, the mid-section observation connecting section corresponding to the area adjacent to the anastomosis, the image acquisition unit being set at the image acquisition unit mounting position, and being connected to one or more external devices outside the body through a wired connection structure and / or a wireless connection structure.

[0031] Figure 2 This is a schematic diagram of the longitudinal structure of a disposable catheter body according to the present invention.

[0032] in, Figure 2 Specifically, the longitudinal structural relationship of the disposable catheter body is shown, including the relative axial arrangement of the insertion section, the mid-section observation connection section, the drainage channel, the interface section, and the optional positioning structure.

[0033] Figure 3 This is a schematic diagram illustrating the positional relationship between the mid-section observation connecting section and the image acquisition unit according to the present invention.

[0034] in, Figure 3 Specifically, the transparent observation section is located on the side wall of the middle observation connecting section, and the image acquisition section is installed adjacent to the transparent observation section. The image acquisition section can be installed at the installation position and cooperate with the transparent observation section.

[0035] Figure 4 This is a schematic diagram of the circumferential distribution of multiple image acquisition units in the middle section of the observation connecting segment according to the present invention.

[0036] in, Figure 4Specifically, multiple image acquisition units are spaced circumferentially along the mid-section observation connecting segment to obtain a wider range of continuous observation.

[0037] Explanation of reference numerals in the attached figures: 101—Disposable catheter body; 102—Insertion section; 103—Mid-section observation connection section; 104—Drainage channel; 105—Drainage opening; 106—Interface section; 201—Transparent observation section; 202—Image acquisition section mounting position; 203—Image acquisition section; 301—External device; 302—Wired connection structure; 303—Wireless connection structure; 401—Proximal positioning structure; 402—Remote positioning structure. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the scope of protection of the present invention is not limited to the following embodiments. Those skilled in the art can make equivalent changes to the specific implementation structure and connection methods without departing from the concept of the present invention.

[0040] like Figures 1-4 As shown, a postoperative anastomotic drainage system with a reusable image acquisition unit includes: A disposable catheter body includes an insertion section for insertion into the body, a drainage channel extending along the insertion section, and a mid-section observation connection section located on the insertion section; wherein, the mid-section observation connection section is configured to correspond to the postoperative anastomosis area in the indwelling state, and the mid-section observation connection section is provided with a transparent observation part and an image acquisition part mounting position; the image acquisition part mounting position is located at or adjacent to the transparent observation part, and is configured to allow the image acquisition part mounted thereon to acquire image information of the anastomosis area through the transparent observation part; At least one image acquisition unit is detachably mounted on the image acquisition unit mounting position for acquiring image information of the anastomosis region; One or more external devices are used to receive, process, and / or output the data acquired by the image acquisition unit; A connection structure is provided for enabling power supply and / or data communication between the image acquisition unit and the one or more external devices; The intermediate observation connection section and / or its adjacent area are provided with at least one drainage opening communicating with the drainage channel; the disposable catheter body is a disposable replacement part that comes into contact with body fluids, and the image acquisition unit and / or the one or more external devices are reusable parts.

[0041] Specifically, the disposable catheter body is provided with at least one positioning structure for stably maintaining the mid-section observation connection segment in the area adjacent to the anastomosis.

[0042] Furthermore, the positioning structure includes two positioning structures spaced apart along the axial direction of the insertion segment, and the middle observation connection segment is located between the two positioning structures.

[0043] Furthermore, the two positioning structures are a proximal balloon and a distal balloon, which can be inflated independently, and the disposable catheter body has inflation paths that are respectively connected to the proximal balloon and the distal balloon.

[0044] Specifically, the connection structure is a wired connection structure, a wireless connection structure, or a combination of both.

[0045] Furthermore, the wired connection structure includes conductive lines embedded in the disposable catheter body, and the image acquisition unit forms a disconnectable electrical connection with the conductive lines through contacts, plug terminals, card slot electrical connectors, magnetic electrical connectors, or flexible circuits.

[0046] Furthermore, the image acquisition unit includes a wireless communication unit, and the image acquisition unit is wirelessly connected to the one or more external devices through the wireless communication unit.

[0047] Specifically, the image acquisition unit includes a built-in power module, which is a primary battery, a replaceable battery, or a rechargeable battery; in some embodiments, the image acquisition unit also includes a wireless charging receiver unit.

[0048] Specifically, the number of image acquisition units is two or more, and they are arranged at circumferential intervals along the middle observation connecting segment.

[0049] Furthermore, multiple image acquisition units are arranged facing different observation directions to achieve continuous observation of a larger area of ​​the anastomosis region.

[0050] Specifically, the image acquisition unit mounting position includes one or more of the following: mounting base, snap-fit ​​structure, slot structure, mounting cavity, positioning and limiting structure, and / or sealing structure.

[0051] In some embodiments, the transparent observation section constitutes an isolated observation interface between the image acquisition section and the fluid environment inside the catheter; the mounting position of the image acquisition section may be provided with a sealing structure and / or an installation cavity isolation structure to reduce the risk of body fluid entering the installation position.

[0052] Furthermore, the image acquisition unit mounting location also includes an electrical contact or plug for realizing an electrical connection between the image acquisition unit and the conductive line.

[0053] Furthermore, the image acquisition unit mounting location also includes a detachable battery base for supporting the image acquisition unit's built-in power module.

[0054] Specifically, it also includes an extended sensor disposed on the middle observation connection section and / or the image acquisition unit, wherein the extended sensor is one or more of a pressure, temperature, pH, impedance or flow sensor; the one or more external devices are used to monitor and / or prompt the information output by the extended sensor.

[0055] Specifically, the one or more external devices include one or more of a data receiving unit, a data processing unit, a data display unit, a data storage unit, and / or an alarm output unit; the one or more external devices are a single device or a combination of multiple devices that are communicatively connected to each other; the data processing includes one or more of image enhancement, continuous recording, and anomaly alerts.

[0056] A disposable catheter body, suitable for use with a reusable image acquisition unit, comprising: Inserted segment; A drainage channel extending along the insertion segment; The middle observation connection segment is located on the insertion segment. The middle observation connection segment is configured to correspond to the postoperative anastomosis area in the indwelling state. The middle observation connection segment is provided with a transparent observation part and an image acquisition part mounting position for detachable installation of the image acquisition part. A drainage opening communicating with the drainage channel, the drainage opening being located within the middle observation connection section and / or its adjacent area; an interface portion located at the proximal end, the interface portion being used to establish a power supply and / or data communication relationship with the connection structure and / or external devices; The disposable catheter body is a disposable replacement component that comes into contact with bodily fluids.

[0057] Example 1: Wired connection mid-section image acquisition unit drainage system.

[0058] like Figures 1 to 3As shown, this embodiment includes a disposable catheter body, a mid-section observation connection segment located in the middle of the catheter body and corresponding to the postoperative anastomosis area in the indwelling state, a detachable image acquisition unit, and one or more external devices located outside the patient's body. The mid-section observation connection segment is provided with a transparent observation unit and an image acquisition unit mounting position. After the image acquisition unit is installed in the mounting position, it images the target area through the transparent observation unit.

[0059] In this embodiment, the connection structure is a wired connection structure. The disposable catheter body may contain a wire channel and pre-embedded conductive lines. The image acquisition unit forms a disconnectable electrical connection with the pre-embedded conductive lines through contacts, plug-in terminals, card slot electrical connectors, magnetic electrical connectors, or flexible circuits, thereby achieving power supply and / or data communication. The electrical connection is disconnected after the image acquisition unit is removed.

[0060] The disposable catheter body also includes a drainage channel. At least one drainage opening communicating with the drainage channel is located within and / or in the mid-section observation connection segment, allowing for drainage while observing the anastomosis area. The catheter body, which comes into contact with bodily fluids, is a disposable replacement component; the image acquisition unit and / or one or more external devices are reusable. After use, the image acquisition unit can be removed from its mounting position, the reusable component can be cleaned and disinfected, and a new catheter body can be installed for reuse.

[0061] To improve the stability of the mid-section observation connection segment in the area near the anastomosis, at least one positioning structure can be provided on the disposable catheter body; preferably, two positioning structures can be provided at intervals along the catheter axis, more preferably a proximal balloon and a distal balloon.

[0062] Example 2: Wireless self-powered mid-section image acquisition unit diversion system.

[0063] like Figure 1 and Figure 3 As shown, in this embodiment, the image acquisition unit can be a miniature image acquisition module, which integrates an image sensor, a wireless communication unit, and a built-in power supply module. The image acquisition unit is installed in the image acquisition unit mounting position of the middle observation connection section via a snap-fit, slot, mounting cavity, mounting base, or other detachable structure.

[0064] In this embodiment, the connection structure is a wireless connection structure. The image acquisition unit communicates with one or more external devices wirelessly. The external device can be a single device or a combination of multiple interconnected devices. The external device can be a standalone receiver box, a mobile terminal, a tablet terminal, or a combination thereof.

[0065] The image acquisition unit's built-in power module can be a primary battery, a replaceable battery, or a rechargeable battery. When needed, a wireless charging receiver can also be installed to work with an external charging device. This embodiment does not require pre-embedded wiring; as long as the external device can receive, process, and / or output the data acquired by the image acquisition unit, continuous observation of the anastomosis area can be achieved.

[0066] Example 3: An example of multiple image acquisition units distributed circumferentially.

[0067] like Figure 4 As shown, the number of image acquisition units can be two or more, preferably two to four; multiple image acquisition units are arranged at circumferential intervals along the middle observation connecting section and oriented towards different observation directions to cover the entire or most of the circumferential range of the anastomosis area. The image information obtained by the multiple image acquisition units can be sent to one or more external devices respectively, or it can be converged and processed in the external devices.

[0068] In some embodiments, one or more external devices may include one or more of a data receiving unit, a data processing unit, a data display unit, a data storage unit, and / or an alarm output unit. The data processing may include one or more of image enhancement, continuous recording, and anomaly alerts; related processing may be performed on a local terminal, a standalone receiver box, or a mobile terminal.

[0069] In other embodiments, an extended sensor may be provided on the catheter body. This extended sensor may be one or more of a pressure, temperature, pH, impedance, or flow sensor. The extended sensor is used to output monitoring information, prompts, and / or alarms, but is not an essential feature of the main claim of this invention.

[0070] In some embodiments, the image information may include image features such as tissue color, edge integrity, exudate, bleeding points, necrotic changes, bubbles, or abnormal secretions in the area adjacent to the anastomosis. One or more external devices can store and compare image information acquired at different time points to display the changing trend of the local state of the anastomosis area and output prompt information when abnormal changes are detected. The above-mentioned image features and prompt information can serve as reference information to assist in observing the anastomosis status, healing trend, and indicating the risk of local ischemia or anastomotic leakage, and are used to assist medical staff in postoperative management, but do not replace the clinical judgment of medical staff.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A postoperative anastomotic drainage system with a reusable image acquisition unit, characterized in that, include: A disposable catheter body includes an insertion section for insertion into the body, a drainage channel extending along the insertion section, and a mid-section observation connection section located on the insertion section; wherein, the mid-section observation connection section is configured to correspond to the postoperative anastomosis area in the indwelling state, and the mid-section observation connection section is provided with a transparent observation part and an image acquisition part mounting position; the image acquisition part mounting position is located at or adjacent to the transparent observation part, and is configured to allow the image acquisition part mounted thereon to acquire image information of the anastomosis area through the transparent observation part; At least one image acquisition unit is detachably mounted on the image acquisition unit mounting position for acquiring image information of the anastomosis region; One or more external devices are used to receive, process, and / or output the data acquired by the image acquisition unit; A connection structure is provided for enabling power supply and / or data communication between the image acquisition unit and the one or more external devices; The intermediate observation connection section and / or its adjacent area are provided with at least one drainage opening communicating with the drainage channel; the disposable catheter body is a disposable replacement part that comes into contact with body fluids, and the image acquisition unit and / or the one or more external devices are reusable parts.

2. The drainage system according to claim 1, characterized in that, The disposable catheter body is provided with at least one positioning structure for stably holding the mid-section observation connection segment in the area adjacent to the anastomosis.

3. The drainage system according to claim 2, characterized in that, The positioning structure includes two positioning structures spaced apart along the axial direction of the insertion segment, and the middle observation connection segment is located between the two positioning structures.

4. The drainage system according to claim 3, characterized in that, The two positioning structures are a proximal balloon and a distal balloon, which can be inflated independently. The disposable catheter body has inflation paths that are respectively connected to the proximal balloon and the distal balloon.

5. The drainage system according to claim 1, characterized in that, The connection structure can be a wired connection structure, a wireless connection structure, or a combination of both.

6. The drainage system according to claim 5, characterized in that, The wired connection structure includes conductive lines embedded in the disposable catheter body. The image acquisition unit forms a disconnectable electrical connection with the conductive lines through contacts, plug terminals, card slot electrical connectors, magnetic electrical connectors, or flexible circuits.

7. The drainage system according to claim 5, characterized in that, The image acquisition unit includes a wireless communication unit, and the image acquisition unit is wirelessly connected to the one or more external devices through the wireless communication unit.

8. The drainage system according to claim 1, characterized in that, The image acquisition unit includes a built-in power module, which can be a primary battery, a replaceable battery, or a rechargeable battery.

9. The drainage system according to claim 8, characterized in that, The image acquisition unit also includes a wireless charging receiver unit.

10. The drainage system according to claim 1, characterized in that, The number of image acquisition units is two or more, and they are set at circumferential intervals along the middle observation connecting section.

11. The drainage system according to claim 10, characterized in that, Multiple image acquisition units are arranged facing different observation directions to achieve continuous observation of a larger area of ​​the anastomosis region.

12. The drainage system according to claim 1, characterized in that, The image acquisition unit mounting position includes one or more of the following: mounting base, snap-fit ​​structure, slot structure, mounting cavity, positioning and limiting structure, and / or sealing structure.

13. The drainage system according to claim 6 or 12, characterized in that, The image acquisition unit mounting location also includes electrical contacts or plugs for realizing the electrical connection between the image acquisition unit and the conductive lines.

14. The drainage system according to claim 1 or 12, characterized in that, The image acquisition unit mounting location also includes a detachable battery base for supporting the image acquisition unit's built-in power module.

15. The drainage system according to claim 1, characterized in that, It also includes an extended sensor disposed on the middle observation connection section and / or the image acquisition unit, wherein the extended sensor is one or more of a pressure, temperature, pH, impedance or flow sensor; the one or more external devices are used to monitor and / or prompt the information output by the extended sensor.

16. The drainage system according to claim 1, characterized in that, The one or more external devices include one or more of a data receiving unit, a data processing unit, a data display unit, a data storage unit, and / or an alarm output unit; the one or more external devices are a single device or a combination of multiple devices that are communicatively connected to each other; the data processing includes one or more of image enhancement, continuous recording, and anomaly alerts.

17. A disposable catheter body, suitable for use with a reusable image acquisition unit, characterized in that, include: Inserted segment; A drainage channel extending along the insertion segment; The middle observation connection segment is located on the insertion segment. The middle observation connection segment is configured to correspond to the postoperative anastomosis area in the indwelling state. The middle observation connection segment is provided with a transparent observation part and an image acquisition part mounting position for detachable installation of the image acquisition part. A drainage opening communicating with the drainage channel, wherein the drainage opening is located within the middle observation connection section and / or its adjacent area; An interface section located at the near end is used to establish a power supply and / or data communication relationship with a connection structure and / or an external device; The disposable catheter body is a disposable replacement component that comes into contact with bodily fluids.

Images