Intelligent control negative pressure wound drainage device and method

Abstract

This application discloses a smart-controlled negative pressure wound drainage device and method, relating to the field of biomedical engineering. It is a negative pressure drainage device with a rinsing function, including a negative pressure unit. A peristaltic pump for cleaning the wound is provided on the outer surface of the negative pressure unit. A connecting device is provided on one side of the negative pressure unit, and a drainage bottle is fixedly mounted on the movable end of the connecting device. A bottle cap is provided on the top surface of the drainage bottle, and a sealing buckle for locking the drainage bottle is provided on the outer surface of the bottle cap. A connector is symmetrically arranged and connected through the inside of the bottle cap, and a drainage tube is inserted into the outer surface of the connector. A drainage bag for collecting wound exudate is provided on one side of the bottle cap, and an external support mechanism for providing additional support to the drainage bottle is provided on the outer surface of the bottle cap. This application utilizes a slider moving up and down to drive connecting rod one and connecting rod two to push a support plate into contact with the inner wall of the drainage bottle, uniformly supporting the drainage bottle wall from multiple points inside, reducing local stress and preventing the drainage bottle from breaking.

Description

Technical Field

[0001] This invention relates to devices for transferring or removing media from the human body, and more specifically to the field of biomedical engineering, particularly to a smart negative pressure wound drainage device and method. Background Technology

[0002] Effective treatment and rapid healing of open wounds have become a major public health concern worldwide. Negative pressure wound therapy, also known as negative pressure wound therapy or vacuum-assisted closure, is a novel clinical wound treatment method that has emerged in recent years. Compared to traditional saline gauze dressing, negative pressure wound therapy offers significant advantages such as accelerated tissue healing, improved angiogenesis, reduced wound infection, decreased complications, reduced patient pain, and shorter treatment cycles.

[0003] Negative pressure wound therapy (NPWT) involves filling the wound with a porous dressing, covering and sealing the wound with a semi-permeable biological membrane, and connecting a negative pressure device through a drainage tube to promote wound healing. The mechanism of action of NPWT can be summarized as macroscopic closure and drainage and microscopic mechanobiological effects. Macroscopic closure and drainage improve microcirculation and increase local blood flow to the wound through the direct action of negative pressure, while simultaneously draining wound exudate and infectious materials, effectively inhibiting infection and reducing edema. The microscopic mechanobiological effects arise from the mechanical strain generated at the wound bed interface by the contraction of the porous dressing. This mechanical stimulation induces mechanobiological effects on cell signaling molecules near the wound bed interface, regulating cell chemotaxis towards the wound, stimulating cell proliferation and migration, inducing granulation tissue formation, and promoting angiogenesis.

[0004] In existing technologies, most drainage devices connect the drainage bottle cap only through a buckle. However, after long-term use, the seal is prone to failure due to wear, aging, or improper operation (such as not being fully tightened). Furthermore, when the drainage bottle is subjected to external impact or internal pressure changes, it is prone to shaking, deformation, or even breakage. This not only affects the smooth progress of the drainage process but also damages other components of the drainage device, thereby reducing the overall service life of the device. Summary of the Invention

[0005] To address the instability of drainage bottle caps connected only by buckles, this application provides an intelligent negative pressure wound drainage device and method.

[0006] The intelligent negative pressure wound drainage device and method provided in this application adopts the following technical solution:

[0007] A smart negative pressure wound drainage device includes a negative pressure unit. The outer surface of the negative pressure unit is equipped with a peristaltic pump for cleaning the wound. A connecting device is located on one side of the negative pressure unit. A drainage bottle is fixedly mounted on the movable end of the connecting device. A bottle cap is located on the top surface of the drainage bottle. A sealing buckle for locking the drainage bottle is located on the outer surface of the bottle cap. A connector is symmetrically arranged and connected through the inside of the bottle cap. A drainage tube is inserted into the outer surface of the connector. A drainage bag for collecting wound exudate is located on one side of the bottle cap. An external support mechanism for providing additional support to the drainage bottle is located on the outer surface of the bottle cap.

[0008] By adopting the above technical solution, the negative pressure machine is used to provide negative pressure power, create a negative pressure environment for wound drainage, and promote the suction of wound exudate. The bottle cap serves as the basic structure for connecting and fixing the various components of the device, and also plays a certain sealing role. The peristaltic pump is used to clean the wound. The external support mechanism adaptively expands and abuts against the drainage bottle, which can adapt to different sizes of drainage bottles and ensures a stable connection between the bottle cap and the drainage bottle. The connecting device is used to realize the quick and accurate connection between the negative pressure machine and the drainage bottle, which is convenient for assembly and disassembly. The sealing buckle is used to lock the drainage bottle, enhance the sealing between the bottle cap and the drainage bottle, and prevent air leakage from affecting the negative pressure effect. The interface is used to connect the drainage tube, so that the wound exudate can enter the drainage bottle through the drainage tube. The drainage bag is used to collect the wound exudate for easy collection and subsequent treatment.

[0009] Preferably, the external support mechanism includes a connecting column fixed to the bottom surface of the bottle cap, a threaded rod II fixed to one side of the connecting column, and a rotating cylinder that passes through the inside of the bottle cap is threadedly connected to the outer surface of the threaded rod II.

[0010] By adopting the above technical solution, the connecting column provides an installation base for other components of the external support mechanism. The threaded rod two is threadedly connected to the rotating cylinder. By rotating the rotating cylinder, it can be moved up and down along the threaded rod two to realize the adjustment function of the external support mechanism.

[0011] Preferably, the bottom of the rotating cylinder is rotatably provided with a sliding block that is slidably connected inside the connecting column, the outer surface of the connecting column is provided with a plurality of connecting blocks, the outer surface of the sliding block is provided with a plurality of connecting rods, the other side of the connecting rods is provided with a support plate, one side of the support plate is symmetrically provided with connecting rods that are rotatably connected to the connecting blocks, and a protective film is provided between one side of the support plate and the drainage bottle.

[0012] By adopting the above technical solution, the sliding block slides inside the connecting column and is simultaneously rotatably connected to the rotating cylinder. When the rotating cylinder moves up and down, it drives the sliding block to slide, which in turn pushes the support plate to expand outward or contract inward through connecting rod one and connecting rod two to adapt to drainage bottles of different sizes. The connecting block provides a rotation connection point for connecting rod two, ensuring that connecting rod two can rotate flexibly and realize the smooth movement of the support plate. The protective film is set between the support plate and the drainage bottle to play a protective and sealing role.

[0013] Preferably, one side of the bottle cap is provided with a plurality of locking mechanisms for additional clamping of the drainage tube. The locking mechanism includes a rotating shaft fixed to one side of the bottle cap, and the outer surface of the rotating shaft is provided with an arc plate one and an arc plate two.

[0014] By adopting the above technical solution, the locking mechanism is used to additionally clamp the drainage tube, enhance the stability of the connection between the drainage tube and the bottle cap, and prevent the drainage tube from loosening or falling off during use. The rotating shaft provides rotational support for the first and second arc plates, enabling the first and second arc plates to rotate relative to each other, thereby realizing the clamping and releasing operation of the drainage tube.

[0015] Preferably, a threaded rod is fixedly provided on the side of the arc plate two away from the rotating shaft, and the side of the arc plate one away from the rotating shaft is slidably connected to the outer surface of the threaded rod one, and a rotating block is threadedly connected to the outer surface of the threaded rod one.

[0016] By adopting the above technical solution, threaded rod one connects arc plate two and arc plate one. Arc plate one is slidably connected to threaded rod one. By rotating the rotating block, the rotating block can be moved along threaded rod one, thereby pushing arc plate one closer to or away from arc plate two, so as to clamp or loosen the drainage tube.

[0017] Preferably, an auxiliary mechanism for leak-free replacement is provided on one side of the bottle cap.

[0018] By adopting the above technical solution, the auxiliary mechanism can achieve a leak-free replacement function, preventing leakage of wound exudate when replacing components such as drainage bottles or drainage tubes, and ensuring a clean and safe operating environment.

[0019] Preferably, the auxiliary mechanism includes a connecting cylinder disposed on one side of the bottle cap, and the connecting cylinder is in communication with the interface, and a support disc is fixedly disposed on the outer surface of the connecting cylinder.

[0020] By adopting the above technical solution, the connecting cylinder is connected to the interface, serving as a channel for the flow of drainage fluid. At the same time, it provides an installation base for other components of the auxiliary mechanism. The support disc supports and fixes the connecting cylinder, enhancing its stability.

[0021] Preferably, a rotating disk is rotatably provided on the outer surface of the connecting cylinder, and a plurality of arc-shaped grooves are formed inside the rotating disk. A fixed disk is fixedly provided on the outer surface of the connecting cylinder by a support column. A plurality of sliding grooves are formed inside the fixed disk. A sliding column is slidably provided inside the arc-shaped groove. A connecting plate is fixedly provided on one side of the sliding column and slidably connected inside the sliding groove. A baffle is fixedly provided on one side of the connecting plate and slidably connected inside the connecting cylinder.

[0022] By adopting the above technical solution, when the rotating disk rotates, the arc-shaped groove inside it pushes the sliding column to move. The sliding column drives the connecting plate to slide in the groove, thereby causing the baffle to move in the connecting cylinder, realizing the control of the flow channel in the connecting cylinder. When replacing parts, the channel is closed to prevent leakage. The fixed disk is fixed on the connecting cylinder by the support column, providing a track for the sliding of the connecting plate and ensuring the stability of the baffle movement.

[0023] Preferably, a rotating disk II is rotatably disposed on the outer surface of the connecting cylinder, and a plurality of arc-shaped grooves II are formed inside the rotating disk II. A fixed disk II is fixedly disposed on the outer surface of the connecting cylinder by a support column II. A plurality of sliding grooves II are formed inside the fixed disk II. A sliding column II is slidably connected inside the arc-shaped grooves II. A connecting plate II is slidably connected inside the sliding grooves II on one side of the sliding column II. A rubber ring is fixedly disposed on one side of the connecting plate II. A fixed plate is fixed between the rotating disk I and the rotating disk II. A connecting arc plate is fixed between the two support columns II. A rotating column is rotatably disposed on the outer surface of the rotating disk II. A limiting groove I and a limiting groove II are formed on the outer surface of the connecting arc plate to fit and engage with the rotating column.

[0024] By adopting the above technical solution, when the rotating disk 2 rotates, its internal arc groove 2 pushes the sliding column 2 to move. The sliding column 2 drives the connecting plate 2 to slide in the sliding groove 2, thereby causing the rubber ring to move. The rubber ring can further enhance the sealing effect and prevent leakage. The fixing plate connects the rotating disk 1 and the rotating disk 2, so that the two can rotate synchronously, which is convenient for operation. The connecting arc plate provides rotational support for the rotating column. At the same time, the limiting groove 1 and limiting groove 2 on it are engaged with the rotating column, which can limit the position of the rotating disk 2, thereby fixing the position of the rubber ring and ensuring the stability of the sealing state.

[0025] The intelligent negative pressure wound drainage method includes the following steps:

[0026] S1: Connect the power adapter, install the bottle cap and drainage bag, and install the straight or three-way connector;

[0027] S2: Install the drainage bag, insert the interface of the drainage bag into one end of the interface, and then rotate the rotating column to drive the rotating disk 2 and rotating disk 1 to rotate together, thereby driving the connecting plate 2 to move the rubber ring inward to tighten the interface between the interface and the drainage bag.

[0028] S3: Install the drainage bottle: By rotating the rotating cylinder, the sliding block is moved up and down, which drives the connecting rod to contact the inner wall of the drainage bottle. This can accommodate drainage bottles of different diameters. The connection between the bottle cap and the drainage bottle is sealed with a protective film to ensure the airtightness of the drainage bottle.

[0029] S4: Clean any obvious foreign objects and surrounding skin tissue from the wound. Cut the drainage layer according to the shape of the wound to fit the wound. Attach the wound dressing layer to the dressing on the upper side of the drainage layer and attach it to the skin around the wound. Then connect the straight or three-way connector to the interface and use the locking mechanism to further secure the straight or three-way connector.

[0030] S5: Press the power button to power on the device. The screen will then display the parameters and symbols as normal.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. By moving the slider up and down, connecting rod one and connecting rod two push the support plate to contact the inner wall of the drainage bottle. This provides even support to the drainage bottle wall from multiple internal points, distributing the pressure to a larger contact surface. This greatly reduces local stress, avoids the risk of the drainage bottle breaking, and makes it safer to use. Combined with the external sealing buckle, it ensures the alignment of the bottle cap and the drainage bottle. The external sealing buckle also provides axial locking and clamping force, ensuring a tight fit between the bottle cap and the bottle opening plane.

[0033] 2. By using a locking mechanism at the interface between the drainage tube and the drainage bag, and hinged by arc plate one and arc plate two, the interface is additionally clamped. This design adds mechanical locking to the traditional simple connection, which greatly enhances the connection strength of the interface. It effectively prevents the interface from loosening or falling off due to patient movement or negative pressure changes during drainage, avoids leakage of drainage fluid and pollution of the surrounding environment, and reduces the workload of medical staff to frequently check and deal with interface problems.

[0034] 3. By driving the rotating disc to rotate, sliding columns one and two slide, which in turn move the baffle. When connecting plate one rotates and moves the baffle inward, it will block the drainage tube, forming a temporary closed valve, thus achieving "leak-free replacement". This greatly improves the asepticity and safety of the operation, reduces the amount of cleaning work, and also improves the comfort and confidence of both medical staff and nurses. It avoids the situation in traditional operations where, when nurses separate the old drainage bag from the drainage tube, residual body fluids, blood or pus near the tube opening will drip due to gravity or pressure, contaminating the sheets, the floor, or even splashing onto medical staff or patients, posing a biosafety hazard and cross-infection risk.

[0035] 4. By driving the rotating disk two to rotate, the sliding column two slides, which in turn moves the rubber ring. When the connecting plate two moves the rubber ring inward, it tightens the interface between the drainage tube and the drainage bag. The rubber ring applies a uniform clamping force to the interface from the outside, which greatly increases the static friction between the interfaces. It is equivalent to putting a "mechanical lock" on this key connection point, effectively preventing accidental disengagement caused by external force and ensuring the continuity and reliability of treatment. Attached Figure Description

[0036] Figure 1 This is a 3D physical image of an intelligent negative pressure wound drainage device according to this application;

[0037] Figure 2 This is a schematic diagram of the overall structure of this application;

[0038] Figure 3 This is a schematic diagram of the socket connection structure in this application;

[0039] Figure 4 This is a schematic diagram illustrating the connection relationship of the locking mechanism in this application;

[0040] Figure 5 This is a schematic diagram of the internal structure of the drainage bottle in this application;

[0041] Figure 6 This is a schematic diagram of the connection relationship between the two threaded rods in this application;

[0042] Figure 7 This is a schematic diagram of the connection structure of the auxiliary mechanisms in this application;

[0043] Figure 8 This is a partial exploded view of the structure in this application;

[0044] Figure 9 This is a schematic diagram of the auxiliary mechanism of this application from another angle;

[0045] Figure 10 For the purposes of this application Figure 8 Enlarged schematic diagram of the structure at point A in the middle.

[0046] Attached reference numerals: 1. Negative pressure unit; 11. Drainage tube; 12. Touch screen; 13. Iron rod; 2. Drainage bottle; 3. Bottle cap; 4. Sealing buckle; 51. Insertion hole; 52. Insertion block; 6. Connector;

[0047] 7. Locking mechanism; 71. Rotating shaft; 72. Arc plate one; 73. Arc plate two; 74. Threaded rod one; 75. Rotating block;

[0048] 8. External support mechanism; 81. Connecting column; 82. Rotating cylinder; 83. Threaded rod II; 84. Sliding block; 85. Connecting rod I; 86. Support plate; 87. Connecting rod II; 88. Connecting block; 89. Protective film;

[0049] 9. Auxiliary mechanism; 91. Connecting cylinder; 92. Supporting disc; 93. Rotating disc one; 94. Fixed disc one; 95. Arc groove one; 96. Sliding groove one; 97. Sliding column one; 98. Connecting plate one; 99. Baffle;

[0050] 910. Fixed plate two; 911. Rotating plate two; 912. Arc groove two; 913. Sliding groove two; 914. Sliding column two; 915. Connecting plate two; 916. Rubber ring;

[0051] 917. Fixing plate; 918. Connecting arc plate; 919. Rotating column; 920. Limiting groove one; 921. Limiting groove two;

[0052] 10. Drainage bag. Detailed Implementation

[0053] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0054] This application discloses an intelligent negative pressure wound drainage device and method.

[0055] Example 1

[0056] Reference Figures 1-3A smart negative pressure wound drainage device with a rinsing function includes a negative pressure unit 1 and a bottle cap 3. A power switch and a touch screen 12 are located on the outer surface of the negative pressure unit 1, which also houses a PLC control system. The touch screen 12 allows the device to be used according to the patient's needs. A peristaltic pump is located on the outer surface of the negative pressure unit 1 for cleaning the wound. One end of the peristaltic pump is connected to saline solution, and the other end is connected to a long tube (approximately 80cm) to deliver the saline solution to the patient's wound. An extendable iron rod 13 is fixed to one side of the negative pressure unit 1 to support 500ml of saline solution. A drainage attachment can also be fixed to the outer surface of the negative pressure unit 1. An external support mechanism 8 is located on the outer surface of the bottle cap 3. To provide additional support, the movable end of the external support mechanism 8 abuts against the drainage bottle 2. A connecting device is provided on one side of the negative pressure machine 1. The connecting device includes an insertion hole 51 fixedly connected to one side of the negative pressure machine 1. The arc surface of the drainage bottle 2 is fixedly connected to the insertion block 52. The insertion block 52 is inserted into and adapted to the insertion hole 51. The top surface of the bottle cap 3 is rotatably connected to two sealing buckles 4. The two sealing buckles 4 are symmetrically arranged. The sealing buckles 4 can be snapped onto the edge of the top surface of the drainage bottle 2 to keep the drainage bottle 2 sealed and prevent blood from overflowing. The inside of the bottle cap 3 is fixedly connected to two connectors 6. The two connectors 6 are symmetrical to each other. The outer surface of the connectors 6 is inserted into the drainage tube 11. One side of the bottle cap 3 is inserted into and adapted to the drainage bag 10. The drainage bag 10 is used to collect wound exudate.

[0057] In use, the plug block 52 is inserted into the socket 51, and the container (bottle or bag) containing the rinsing solution is connected to the interface at one end of the peristaltic pump. Before wound drainage and adsorption, the saline solution is supported by the iron rod 13. Then, the saline solution is introduced into the patient's wound for rinsing by the peristaltic pump.

[0058] Reference Figure 5 , Figure 6The external support mechanism 8 includes a connecting column 81 fixed at the center of the bottom surface of the bottle cap 3. The side of the connecting column 81 closest to the bottle cap 3 is hollow, and one side of the connecting column 81 is fixedly connected to a threaded rod 83. The threaded rod 83 is located at the center of the bottle cap 3 and passes through the interior of the bottle cap 3. The outer surface of the threaded rod 83 is threadedly connected to a rotating cylinder 82. The rotating cylinder 82 passes through and is rotatably connected inside the bottle cap 3. A handle is fixed on the top surface of the rotating cylinder 82 to facilitate the user's rotation of the rotating cylinder 82. The bottom of the rotating cylinder 82 is rotatably connected to a sliding block 84. The sliding block 84 is slidably connected inside the connecting column 81 and on the outer surface of the threaded rod 83. A plurality of connecting blocks 88 are fixedly arranged in a circumferential array on the outer surface of the connecting column 81. The outer surface of the sliding block 84 is rotatably connected to a plurality of connecting rods 85. One side of the connecting rod 85 is rotatably connected to the support plate 86. The support plate 86 is located on the side away from the sliding block 84. One side of the support plate 86 is symmetrically rotatably connected to the connecting rod 87. The two connecting rods 87 are located on the side close to the connecting block 88. The side of the connecting rod 87 away from the support plate 86 is rotatably connected to the connecting block 88. A protective film 89 is fixedly provided on one side of the support plate 86. The side of the protective film 89 away from the support plate 86 is fixedly connected to the drainage bottle 2. The protective film 89 is a medical-grade silicone protective film.

[0059] In use, rotating the cylinder 82 clockwise causes the sliding block 84 to move downwards. The downward movement of the sliding block 84 causes the connecting rod 85 to deflect outwards, which in turn causes the support plate 86 to expand outwards. This provides internal support for the drainage bottle 2 to maintain the connection between the drainage bottle 2 and the bottle cap 3. When the support plate 86 expands outwards, it will also cause the protective film 89, which is fixedly connected to the support plate 86, to support the inner wall of the drainage bottle 2, thereby ensuring the sealing of the drainage bottle 2.

[0060] Reference Figure 4 A number of locking mechanisms 7 are provided on one side of the bottle cap 3. The locking mechanisms 7 are used to additionally clamp the drainage tube 11. The locking mechanism 7 includes a rotating shaft 71 fixed on one side of the bottle cap 3. The outer surface of the rotating shaft 71 is rotatably connected to the first arc plate 72 and the outer surface of the rotating shaft 71 is rotatably connected to the second arc plate 73. One side of the second arc plate 73 is fixedly connected to the first threaded rod 74. The first threaded rod 74 is located on the side away from the rotating shaft 71, and one side of the first arc plate 72 is connected to the outer surface of the first threaded rod 74. The outer surface of the first threaded rod 74 is threadedly connected to the rotating block 75. A number of anti-slip strips are fixed on the inner arc surfaces of the first arc plate 72 and the second arc plate 73 to increase the friction with the drainage tube 11.

[0061] When in use, when the drainage tube 11 is inserted into the connector 6, the user rotates the rotating block 75 to move the arc plate 1 72 and the arc plate 2 73 relative to each other, thereby clamping the drainage tube 11, enhancing the connection strength of the connector 6, effectively preventing the interface from loosening or falling off due to patient activity or negative pressure changes during the drainage process, avoiding leakage of drainage fluid and pollution of the surrounding environment, and reducing the workload of medical staff to frequently check and deal with interface problems.

[0062] Reference Figure 7 , Figure 8 The auxiliary mechanism 9 includes a connecting cylinder 91 fixedly connected to the bottom surface of the bottle cap 3, and the connecting cylinder 91 is in communication with the connector 6. The middle part of the outer surface of the connecting cylinder 91 is fixedly connected to the supporting disc 92, and the upper part of the outer surface of the connecting cylinder 91 is rotatably connected to the rotating disc 93. The rotating disc 93 has several arc-shaped grooves 95 arranged in a circular array inside. The upper part of the outer surface of the connecting cylinder 91 is fixedly connected to the fixed disc 94 through a supporting column. The fixed disc 94 is located above the rotating disc 93. The interior of the fixed disc 94... The circular array has several sliding grooves 96. The interior of the arc-shaped groove 95 is slidably connected to the sliding column 97. One side of the sliding column 97 is fixedly connected to the connecting plate 98, and the connecting plate 98 is slidably connected inside the sliding groove 96. One side of the connecting plate 98 is fixedly connected to the baffle 99. The baffle 99 is located on the side away from the sliding column 97, and the baffle 99 is slidably connected inside the connecting cylinder 91. Several baffles 99 combined can form a shield inside the connecting cylinder 91 to prevent wound exudate from dripping.

[0063] In use, the rotating disc 93 drives the arc-shaped groove 95 to rotate, which in turn drives the sliding column 97 to slide, which in turn drives the connecting plate 98 to slide inside the sliding groove 96. This causes the baffle 99 to form a barrier inside the connecting cylinder 91, creating a temporary closed valve, thus achieving "leak-free replacement". This greatly improves the asepticity and safety of the operation, reduces the amount of cleaning work, and also improves the comfort and confidence of both medical staff and nurses. It avoids the situation in traditional operations where, when nurses separate the old drainage bag 10 from the drainage tube 11, residual body fluids, blood or pus near the tube opening may drip due to gravity or pressure, contaminating the sheets, the floor, or even splashing onto medical staff or patients, posing a biosafety hazard and risk of cross-infection.

[0064] Reference Figure 7 , Figure 10The lower part of the outer surface of the connecting cylinder 91 is rotatably connected to the rotating disk 911. The rotating disk 911 has several arc-shaped grooves 912 arranged in a circular array inside. The outer surface of the connecting cylinder 91 is fixedly connected to the fixed disk 910 via a support column. The fixed disk 910 is located below the rotating disk 911. The fixed disk 910 has several sliding grooves 913 arranged in a circular array inside. The interior of the arc-shaped grooves 912 is slidably connected to the sliding column 914. One side of the sliding column 914 is fixedly connected to the connecting plate 915, and the connecting plate 915 is slidably connected inside the sliding groove 913. One side of the connecting plate 915 is fixedly connected to the rubber ring 916, which is located away from the sliding column 914. A fixing plate 917 is fixedly connected between disk 1 93 and rotating disk 2 911, and the fixing plate 917 is slidably connected inside the supporting disk 92. A connecting arc plate 918 is fixed between two adjacent supporting columns 2. The arc surface of rotating disk 2 911 is rotatably connected to rotating column 919. Limiting groove 1 920 and limiting groove 2 921 are opened on the outer surface of connecting arc plate 918, and limiting groove 1 920 and limiting groove 2 921 are engaged and matched with rotating column 919. When rotating column 919 is located in limiting groove 1 920, it indicates that baffle 99 retracts inward to block connecting cylinder 91, and rubber ring 916 expands outward. When rotating column 919 is located inside limiting groove 2 921, it indicates that baffle 99 expands outward, and rubber ring 916 locks inward.

[0065] In use, the rotation of the rotating disk 911 drives the rotation of the arc-shaped groove 912, which in turn drives the sliding column 914 to slide, which in turn drives the connecting plate 915 to slide inside the sliding groove 913. This causes the rubber ring 916 to contract inward, tightening the interface between the connecting cylinder 91 and the drainage bag 10. The rubber ring 916 applies a uniform clamping force to the interface from the outside, which greatly increases the static friction between the interfaces. It is equivalent to putting a "mechanical lock" on this key connection point, effectively preventing accidental disengagement due to external forces and ensuring the continuity and reliability of treatment.

[0066] Among them, the quantities of arc groove 1 95, slide groove 1 96, sliding column 1 97, connecting plate 1 98, arc groove 2 912, slide groove 2 913, sliding column 2 914, and connecting plate 2 915 are consistent, and the arc groove 1 95 and arc groove 2 912 are opened in opposite directions to ensure that when the baffle 99 expands outward, the rubber ring 916 locks inward. The rubber ring 916 is a medical-grade silicone protective film. Threaded rod 1 74 and threaded rod 2 83 are made of medical-grade stainless steel to ensure durability and corrosion resistance. Arc plate 1 72 and arc plate 2 73 are made of medical-grade stainless steel. The plug block 52 is made of medical plastic that conforms to ISO 13485 standards to ensure connection stability. The connector 6 uses a sealing ring in combination with silicone material to ensure no air leakage.

[0067] Example 2

[0068] The intelligent negative pressure wound drainage method includes the following steps:

[0069] S1: Connect the power adapter, install bottle cap 3 and drainage bag 10, and install straight or three-way connectors;

[0070] S2: Install the drainage bag 10, insert the interface of the drainage bag 10 into one end of the connector 6, and then rotate the rotating column 919 to drive the rotating disk 911 and the rotating disk 93 to rotate together, thereby driving the connecting plate 915 to move the rubber ring 916 inward to tighten the interface between the connector 6 and the drainage bag 10.

[0071] S3: Install the drainage bottle 2: By rotating the rotating cylinder 82, the sliding block 84 is controlled to move up and down, which drives the connecting rod 85 to contact the inner wall of the drainage bottle 2. This can accommodate drainage bottles 2 of different diameters. The connection between the bottle cap 3 and the drainage bottle 2 is sealed by the protective film 89 to ensure the airtightness of the drainage bottle 2.

[0072] S4: Clean any obvious foreign objects and surrounding skin tissue from the wound. Cut the drainage layer according to the shape of the wound to fit the wound. Attach the wound dressing layer to the dressing on the upper side of the drainage layer and attach it to the skin around the wound. Then connect the straight or three-way connector to the connector 6 and further secure the straight or three-way connector using the locking mechanism 7.

[0073] A dressing is pasted on the lower layer of the drainage layer, and an inverted funnel-shaped opening is made at the drainage tube 11. Then, a dressing is pasted on the upper side of the drainage layer to wrap the inlet tube and the outlet tube is placed on the upper side of the dressing. Then, the entire device is covered on the wound.

[0074] S5: Press the power button to power on the device. The screen will then display the parameters and symbols normally.

[0075] Continuous mode: The default working mode when the machine is turned on is continuous mode. Set the required negative pressure value and click (treatment) to start running until the set negative pressure value is reached.

[0076] Cyclic Mode: Switch between continuous and cyclic modes by operating the touchscreen interface. The current working mode will be displayed on the screen. In cyclic mode, the device defaults to a cyclic mode with adjustable working time and adjustable pressure holding time. Set the required negative pressure value and click (treatment) to start running until the set negative pressure value is reached.

[0077] The implementation principle of the intelligent negative pressure wound drainage device and method in this application embodiment is as follows:

[0078] In use, rotating the cylinder 82 clockwise causes the sliding block 84 to move downward. The downward movement of the sliding block 84 causes the connecting rod 85 to deflect outward, which in turn causes the support plate 86 to expand outward, thereby providing internal support for the drainage bottle 2 to maintain the connection between the drainage bottle 2 and the bottle cap 3, and ensuring the sealing of the drainage bottle 2 through the protective film 89.

[0079] After connecting the drainage tube 11 to the connector 6, the rotating block 75 is rotated to move the arc plate 1 72 and the arc plate 2 73 relative to each other, thereby clamping the drainage tube 11, enhancing the connection strength of the connector 6, effectively preventing the interface from loosening or falling off due to patient activity or negative pressure changes during the drainage process, avoiding leakage of drainage fluid and pollution of the surrounding environment, and reducing the workload of medical staff to frequently check and deal with interface problems.

[0080] Then, by inserting the plug block 52 into the inside of the socket 51, the container (bottle or bag) containing the rinsing solution is connected to the interface at one end of the peristaltic pump. Before the wound is drained and absorbed, the saline solution is supported by the iron rod 13. Then, the saline solution is introduced into the patient's wound for rinsing by the peristaltic pump.

[0081] When installing the drainage bag 10, the rotating disk 2 911 rotates to drive the arc groove 2 912 to rotate, thereby driving the sliding column 2 914 to slide, which in turn drives the connecting plate 2 915 to slide inside the sliding groove 2 913, thereby driving the rubber ring 916 to retract inward and tighten the interface between the connecting cylinder 91 and the drainage bag 10.

[0082] When replacing the drainage bag 10, the rotating disc 93 drives the arc groove 95 to rotate, which in turn drives the sliding column 97 to slide, which in turn drives the connecting plate 98 to slide inside the sliding groove 96. This causes the baffle 99 to form a barrier inside the connecting cylinder 91, creating a temporary closed valve, thus achieving "leak-free replacement". This greatly improves the asepticity and safety of the operation and reduces the amount of cleaning work.

[0083] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A smart-controlled negative pressure wound drainage device, characterized in that: Includes a negative pressure machine (1), a connecting device is provided on one side of the negative pressure machine (1), a drainage bottle (2) is fixedly provided on the movable end of the connecting device, a bottle cap (3) is provided on the top surface of the drainage bottle (2), a sealing buckle (4) for locking the drainage bottle (2) is provided on the outer surface of the bottle cap (3), a connector (6) is symmetrically arranged and connected inside the bottle cap (3), a drainage tube (11) is inserted into the outer surface of the connector (6), a drainage bag (10) for collecting wound exudate is provided on one side of the bottle cap (3), and an external support mechanism (8) for providing additional support for the drainage bottle (2) is provided on the outer surface of the bottle cap (3). The bottle cap (3) is provided with an auxiliary mechanism (9) on one side for achieving leak-free replacement. The auxiliary mechanism (9) includes a connecting cylinder (91) disposed on one side of the bottle cap (3), and the connecting cylinder (91) is connected to the connector (6). A support disc (92) is fixedly disposed on the outer surface of the connecting cylinder (91). The outer surface of the connecting cylinder (91) is rotatably provided with a rotating disk (93). The interior of the rotating disk (93) is provided with several arc-shaped grooves (95). The outer surface of the connecting cylinder (91) is fixedly provided with a fixed disk (94) by a support column. The interior of the fixed disk (94) is provided with several sliding grooves (96). The interior of the arc-shaped grooves (95) is slidably provided with a sliding column (97). A connecting plate (98) is slidably connected to the interior of the sliding groove (96) on one side of the sliding column (97). A baffle (99) is slidably connected to the interior of the connecting cylinder (91) on one side of the connecting plate (98). The external support mechanism (8) includes a connecting column (81) fixed on the bottom surface of the bottle cap (3). A threaded rod (83) is fixed on one side of the connecting column (81). A rotating cylinder (82) that passes through the inside of the bottle cap (3) is threaded onto the outer surface of the threaded rod (83).

2. The intelligent negative pressure wound drainage device according to claim 1, characterized in that: The bottom of the rotating cylinder (82) is rotatably provided with a sliding block (84) that is slidably connected inside the connecting column (81). The outer surface of the connecting column (81) is provided with several connecting blocks (88). The outer surface of the sliding block (84) is provided with several connecting rods (85). The other side of the connecting rods (85) is provided with a support plate (86). The support plate (86) is symmetrically provided with connecting rods (87) that are rotatably connected to the connecting blocks (88) on one side. A protective film (89) is provided between the support plate (86) and the drainage bottle (2).

3. The intelligent negative pressure wound drainage device according to claim 1, characterized in that: The bottle cap (3) is provided with several locking mechanisms (7) for additional clamping of the drainage tube (11) on one side. The locking mechanism (7) includes a rotating shaft (71) fixed on one side of the bottle cap (3). The outer surface of the rotating shaft (71) is provided with an arc plate one (72) and the outer surface of the rotating shaft (71) is provided with an arc plate two (73).

4. The intelligent negative pressure wound drainage device according to claim 3, characterized in that: The arc plate 2 (73) is fixedly provided with a threaded rod 1 (74) on the side away from the rotating shaft (71), and the arc plate 1 (72) is slidably connected to the outer surface of the threaded rod 1 (74) on the side away from the rotating shaft (71). The outer surface of the threaded rod 1 (74) is threadedly connected with a rotating block (75).

5. The intelligent negative pressure wound drainage device according to claim 1, characterized in that: A rotating disk (911) is rotatably mounted on the outer surface of the connecting cylinder (91). The rotating disk (911) has several arc-shaped grooves (912) inside. A fixed disk (910) is fixed on the outer surface of the connecting cylinder (91) by a support column. The fixed disk (910) has several sliding grooves (913) inside. A sliding column (914) is slidably connected inside the arc-shaped groove (912). One side of the sliding column (914) is fixedly and slidably connected to the sliding groove (913). The inner connecting plate 2 (915) has a rubber ring (916) fixed on one side. A fixing plate (917) is fixed between the rotating disk 1 (93) and the rotating disk 2 (911). A connecting arc plate (918) is fixed between the two supporting columns 2. A rotating column (919) is rotatably provided on the outer surface of the rotating disk 2 (911). A limiting groove 1 (920) and a limiting groove 2 (921) that are adapted to engage with the rotating column (919) are provided on the outer surface of the connecting arc plate (918).

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