Wound negative pressure sealing drainage device

Abstract

The present invention discloses a wound surface negative pressure sealing drainage device, which relates to the field of negative pressure sealing drainage, including a main unit, a negative pressure tank being installed on the main unit, a tank cover being connected to the top of the negative pressure tank, the top of the tank cover being respectively connected to a drainage component and a negative pressure source, and a liquid storage tank being installed in the negative pressure tank, two measuring cups for containing liquid being installed on the bottom surface of the tank cover facing the direction of the liquid storage tank inlet, the measuring cups being used to alternately receive the liquid introduced into the negative pressure tank by the drainage component, and a camera for monitoring the measuring cup being also installed on the inner wall of the negative pressure tank. The present invention connects the drainage tube to a Y-shaped tube, and alternately discharges liquid into the measuring cup through the two outlets of the Y-shaped tube, and utilizes the camera located in the negative pressure tank to realize time-sharing monitoring of the flow rate of the drained liquid, and can observe the state of the drained liquid.

Description

Technical Field

[0001] The present invention relates to the field of negative pressure sealing drainage, in particular to a wound surface negative pressure sealing drainage device. Background Art

[0002] Vacuum Sealing Drainage (VSD) is an advanced treatment method that promotes wound healing through continuous negative pressure suction and is widely used in the clinical management of various complex wounds.

[0003] The existing wound negative pressure closed drainage device generally includes a negative pressure source, a wound dressing, a drainage pipeline, a negative pressure tank, etc. The negative pressure source is used to maintain a negative pressure environment (-125mmHg to -450mmHg) in the negative pressure tank. The liquid exuded from the wound covered by the wound dressing enters the negative pressure tank through the drainage pipeline. The liquid drained into the negative pressure tank within 24 hours after surgery generally does not exceed 20 ml / hour. After 24 hours, the drainage volume gradually drops to below 5 ml / hour.

[0004] The relevant Chinese patent with announcement number CN217448553U discloses a closed negative pressure drainage device for surgical wounds, including a wound dressing, a drainage tube is provided on the top of the wound dressing, a negative pressure tank is provided on the end of the drainage tube away from the wound dressing, a cover is movably installed on the top of the negative pressure tank, and an air suction tube is fixedly installed on the inner wall of the cover away from the drainage tube.

[0005] With respect to the above-mentioned related technologies, the liquid drained by the wound negative pressure sealing drainage device in the existing technology is directly discharged into the negative pressure tank. During the drainage process, all the liquids are mixed with each other in the negative pressure tank, which is not conducive to the doctor's monitoring of the liquid status (time-based drainage volume, liquid color, etc.) during the drainage process. When the drainage is abnormal (abnormal pus or blood appears), it is not easy to discover and perform emergency treatment in time. In summary, the existing wound negative pressure sealing drainage device is not easy to monitor the drained liquid. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a wound surface negative pressure sealing drainage device to solve the technical problem that the existing wound surface negative pressure sealing drainage device is difficult to monitor the drained liquid.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a wound negative pressure sealing drainage device, comprising a main unit, a negative pressure tank installed on the main unit, a tank cover connected to the top of the negative pressure tank, the top of the tank cover being respectively connected to the drainage component and the negative pressure source, and also comprising a liquid storage tank, the liquid storage tank being installed in the negative pressure tank, and two measuring cups for containing liquid being installed on the bottom surface of the tank cover facing the direction of the liquid storage tank inlet, the measuring cups being used to alternately receive the liquid introduced into the negative pressure tank by the drainage component, and a camera for monitoring the measuring cups being also installed on the inner wall of the negative pressure tank.

[0008] By adopting the above technical solution, the drainage tube is connected to the Y-shaped tube, and the liquid is discharged alternately into the measuring cup through the two outlets of the Y-shaped tube. The camera located in the negative pressure tank can be used to monitor the flow rate of the drained liquid in a time-sharing manner, and the status of the drained liquid can be observed.

[0009] The present invention is further configured such that the tank cover is connected to a Y-shaped tube that penetrates into the negative pressure tank, and both sides of the Y-shaped tube on the bottom surface of the tank cover are fixedly connected to mounting brackets, a rotating bracket is rotatably connected to the mounting bracket, and a sealing plate is fixedly connected to the bottom end of the rotating bracket for respectively sealing the two outlets of the Y-shaped tube.

[0010] Preferably, a Y-shaped tube is used to guide the drained liquid into two different measuring cups.

[0011] The present invention is further configured such that a lifting column is slidably connected to the measuring cup in the vertical direction, a floating ring is fixedly connected to the bottom end of the lifting column, a liquid guide column is coaxially fixedly connected to the center of the measuring cup, a siphon pipeline passing to the bottom of the measuring cup is provided in the liquid guide column, and the lifting column can push the sealing plate toward the outlet of the corresponding Y-shaped tube when it rises.

[0012] Preferably, the rising liquid level in the measuring cup is used to drive the lifting column to rise and push the upper sealing plate.

[0013] The present invention is further configured such that an inverted conical cup mouth is fixedly connected to the top of the measuring cup, and liquid flow grooves are arranged at intervals in an annular manner on the side wall of the lifting column.

[0014] Preferably, the cup mouth can effectively prevent the liquid flowing out of the Y-shaped tube outlet from spilling.

[0015] The present invention is further configured such that a rotating shaft is rotatably connected between the mounting frames, the rotating frames are fixedly connected to the side walls of the rotating shaft, and the side walls of the rotating shaft are also fixedly connected to counterweight blocks corresponding to each rotating frame. When a sealing plate connected to one of the rotating frames blocks the outlet of the Y-shaped tube, the counterweight block close to the rotating frame is in a vertical state.

[0016] Preferably, the counterweight block helps to maintain the stability of the sealing plate closing the Y-shaped tube outlet.

[0017] The present invention is further configured such that the mounting frame is slidably connected to a clamping plate for clamping the measuring cup in the vertical direction, the clamping plate can be fixedly connected to the mounting frame by bolts, and waist holes are provided in the corresponding through holes on the mounting frame for the bolts to pass through.

[0018] Preferably, the measuring cup is fixed with a clamp.

[0019] The present invention is further configured such that the top surface of the tank cover is also connected to an air interface, the air interface is connected to the main unit through an exhaust pipe, and the top end of the Y-shaped tube is connected to a drainage component.

[0020] Preferably, the air in the negative pressure tank is extracted using a vacuum pump in the main unit.

[0021] The present invention is further configured such that the top end of the Y-shaped tube is connected to a drainage tube, the other end of the drainage tube is connected to a silicone gel patch for adhering to the periphery of the wound, the silicone gel patch is sequentially provided with a first dressing and a second dressing facing the wound, the silicone gel patch is also passed through a flushing tube, one end of the flushing tube extends to the middle of the first dressing and the second dressing, and a flow-stop structure is installed on both the flushing tube and the drainage tube.

[0022] Preferably, a silicone gel patch is applied to the skin to form a closed environment, which can be combined with flushing while the wound is drained under negative pressure, thereby promoting wound healing. It can effectively remove necrotic tissue and exudate from the wound, promote healing, reduce the number of dressing changes for patients, and reduce workload. It is simple and easy to use, and the effect is reliable.

[0023] The present invention is further configured such that the first dressing uses PU sponge and the second dressing uses PVA sponge.

[0024] As a preferred option, PU sponge has higher mechanical strength and elasticity, and can withstand greater negative pressure without collapsing. PVA sponge has a strong ability to absorb liquid and is suitable for handling large amounts of exudate.

[0025] The present invention is further configured such that the measuring cup is made of a transparent material, and when the tank cover is connected to the negative pressure tank, the measuring cup and the camera are at the same horizontal height.

[0026] Preferably, the camera is used to monitor the state of the liquid in the measuring cup.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] The present invention places a liquid storage tank in a negative pressure tank, installs two measuring cups facing the liquid storage tank opening on the bottom of the tank cover, connects the drainage tube to the Y-shaped tube, and alternately discharges liquid into the measuring cups through the two outlets of the Y-shaped tube. A camera located in the negative pressure tank can be used to monitor the flow rate of the drained liquid in a time-sharing manner, and the status of the drained liquid can be observed. After uploading the images taken by the camera to the Internet, it can further facilitate medical staff to remotely monitor the patient's drainage process.

[0029] The present invention rotates and connects a sealing plate capable of closing the outlet of the Y-shaped tube on the mounting frame of the measuring cup, utilizes the buoyancy of the liquid in the measuring cup to push the lifting column upward, and then pushes the sealing plate to close the corresponding Y-shaped tube outlet. At the same time, after the liquid level in the measuring cup corresponding to the outlet reaches a certain height, the liquid can be gradually drained through the siphon pipe before the Y-shaped tube outlet corresponding to the other measuring cup is not closed, thereby realizing alternating liquid storage between the two measuring cups, making it convenient for a camera to capture the state of the liquid in the measuring cups, and calculating the time-sharing flow rate of the liquid according to the number of times the two measuring cups are drained and the time of negative pressure liquid extraction.

[0030] The present invention fixes two counterweights on the rotating shaft so that when the outlet of the Y-shaped tube is closed, the gravity of the counterweights is used to improve the stability of the rotating frame, effectively avoiding leakage at the sealing plate and the outlet of the Y-shaped tube.

[0031] The present invention fixes an inverted conical cup mouth at the top of the measuring cup, which facilitates the liquid flowing out of the Y-shaped tube outlet to flow into the measuring cup, effectively reducing the possibility of liquid spilling. In addition, liquid flow grooves are arranged at circumferential intervals along the lifting column, so that the liquid at the cup mouth can pass through the liquid flow grooves and enter the measuring cup, further avoiding the situation where liquid overflows from the cup mouth of the measuring cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A perspective view of the present invention;

[0033] Figure 2 For the present invention Figure 1 A magnified view of middle A;

[0034] Figure 3 This is an exploded view of the host of the present invention;

[0035] Figure 4 This is an exploded view of the host from another perspective of the present invention;

[0036] Figure 5 For the present invention Figure 4 Enlarged view of middle B;

[0037] Figure 6 This is a three-dimensional diagram of the cross-section of the negative pressure tank and the tank cover of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of middle C;

[0039] Figure 8 This is a three-dimensional diagram of a cross-section of the measuring cup of the present invention;

[0040] Figure 9 This is a plan view of the cross-section of the measuring cup and the lifting column of the present invention:

[0041] Figure 10 This is a schematic diagram of the initial positions of the measuring cup and the lifting column before drainage begins in the present invention;

[0042] Figure 11 This is a schematic diagram of the state where the lifting column in the left measuring cup just contacts the sealing plate after drainage starts according to the present invention;

[0043] Figure 12 This is a schematic diagram of the state in which the lifting column in the left measuring cup pushes the rotating frame to rotate in the forward direction after drainage starts in the present invention;

[0044] Figure 13 This is a schematic diagram of the state in which the liquid in the left measuring cup is full after drainage starts and the lifting column pushes the sealing plate to close the Y-shaped tube outlet before it is emptied;

[0045] Figure 14 This is a schematic diagram showing the state in which after drainage of the present invention begins, when the liquid in the left measuring cup is emptied through the siphon pipeline, the lifting column in the right measuring cup is about to push the rotating frame to rotate in the reverse direction.

[0046] Description of reference numerals:

[0047] 1. Main unit; 2. Negative pressure tank; 3. Tank cover; 4. Liquid storage tank; 5. Mounting frame; 6. Rotating shaft; 7. Rotating frame; 8. Closing plate; 9. Counterweight; 10. Clamp; 1001. Guide groove; 11. Measuring cup; 1101. Cup mouth; 1102. Liquid guide column; 1103. Siphon pipeline; 12. Lifting column; 1201. Liquid flow trough; 13. Floating ring; 14. Y-shaped tube; 15. Air interface; 16. Camera; 17. Drainage tube; 18. Vacuum tube; 19. Flushing tube; 20. Silicone gel patch; 21. First dressing; 22. Second dressing. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0049] The following describes an embodiment of the present invention based on its overall structure.

[0050] First embodiment:

[0051] A wound negative pressure sealing drainage device, please refer to Figure 1-14 , including a host 1, a negative pressure tank 2 is installed on the host 1, and a tank cover 3 is connected to the top of the negative pressure tank 2. Specifically, in this embodiment, the negative pressure tank 2 and the tank cover 3 are connected to each other by a threaded connection with good sealing performance, and it can be ensured that the number of rotations of the tank cover 3 each time they are connected is the same, so that the camera 16 can be aimed at the two measuring cups 11 at the same time. The top of the tank cover 3 is respectively connected to the drainage component and the negative pressure source. Specifically, a vacuum pump for extracting air from the negative pressure tank 2 is installed in the host 1.

[0052] It also includes a liquid storage tank 4, which is installed in the negative pressure tank 2. Specifically, a mounting base for placing the liquid storage tank 4 is provided in the negative pressure tank 2. The diameter of the tank mouth of the liquid storage tank 4 is smaller than the diameter of the tank body, which is convenient for taking out and putting in from the negative pressure tank 2. Two measuring cups 11 for containing liquid are installed on the bottom surface of the tank cover 3 facing the entrance of the liquid storage tank 4. The measuring cups 11 are used to alternately receive the liquid introduced into the negative pressure tank 2 by the drainage component. The inner wall of the negative pressure tank 2 is also installed with a camera 16 for monitoring the measuring cup 11.

[0053] Furthermore, the measuring cup 11 is made of a transparent material. When the tank cover 3 is connected to the negative pressure tank 2 , the measuring cup 11 and the camera 16 are at the same horizontal height, which makes it convenient for the camera 16 to photograph and monitor the state of the liquid in the measuring cup 11 .

[0054] In the above embodiment, please refer to Figure 4-8 The tank cover 3 is connected to a Y-shaped tube 14 that penetrates into the negative pressure tank 2. The bottom surface of the tank cover 3 is fixedly connected to a mounting bracket 5 on both sides of the Y-shaped tube 14. The mounting bracket 5 is rotatably connected to a rotating bracket 7. The bottom end of the rotating bracket 7 is fixedly connected to a sealing plate 8 for respectively blocking the two outlets of the Y-shaped tube 14. The Y-shaped tube 14 is used to guide the drained liquid into two different measuring cups 11 respectively.

[0055] Specifically, a lifting column 12 is connected to the measuring cup 11 in a vertical sliding manner, and a floating ring 13 is fixedly connected to the bottom end of the lifting column 12. A liquid guide column 1102 is coaxially fixedly connected to the center of the measuring cup 11, and a siphon pipe 1103 passing to the bottom of the measuring cup 11 is provided in the liquid guide column 1102. Specifically, the specific principle of the siphon pipe 1103 in the measuring cup 11 is similar to that of the fairness cup in the prior art, and its principle is not described in detail here. The lifting column 12 rises to push the sealing plate 8 toward the outlet of the corresponding Y-shaped tube 14, and the rising liquid level in the measuring cup 11 drives the lifting column 12 to rise and push the sealing plate 8 above.

[0056] Furthermore, the mounting frame 5 is slidably connected to a splint 10 for clamping the measuring cup 11 in the vertical direction. Specifically, the splint 10 is fixedly connected to guide grooves 1001 on both sides of the mounting frame 5. When the mounting frame 5 is fixedly connected to the bottom surface of the tank cover 3, the height of the splint 10 can be fine-tuned in the vertical direction through the guide grooves 1001, thereby adjusting the height of the measuring cup 11. The splint 10 can be fixedly connected to the mounting frame 5 by bolts, and waist holes are provided in the corresponding through holes on the mounting frame 5 for the bolts to pass through, and the measuring cup 11 is fixed by the splint 10.

[0057] Second embodiment:

[0058] A wound negative pressure sealing drainage device, please refer to Figure 1-14 Based on the first embodiment, the difference from the first embodiment is that the top of the measuring cup 11 is fixedly connected with an inverted conical cup mouth 1101, the inner diameter of the top of the cup mouth 1101 is larger than the inner diameter of the measuring cup 11, and the side wall of the lifting column 12 is provided with flow grooves 1201 at annular intervals. The liquid flowing into the cup mouth 1101 will enter the measuring cup 11 through the flow grooves 1201. The cup mouth 1101 can effectively prevent the liquid flowing out of the outlet of the Y-shaped tube 14 from spilling.

[0059] Specifically, a rotating shaft 6 is rotatably connected between the mounting frames 5, and the rotating frames 7 are fixedly connected to the side walls of the rotating shaft 6. The side walls of the rotating shaft 6 corresponding to each rotating frame 7 are also fixedly connected to a counterweight 9. When the sealing plate 8 connected to one of the rotating frames 7 blocks the outlet of the Y-shaped tube 14, the counterweight 9 close to the rotating frame 7 is in a vertical state. At this time, the bottom surface of one of the sealing plates 8 is in contact with the top surface of the measuring cup 11. The counterweight 9 is conducive to maintaining the stability of the sealing plate 8 closing the outlet of the Y-shaped tube 14, and preventing the rotating frame 7 from rotating before the sealing plate 8 is pushed.

[0060] The third embodiment:

[0061] A wound negative pressure sealing drainage device, please refer to Figure 1-14 Based on the second embodiment, the difference from the second embodiment is that the top surface of the tank cover 3 is also connected to the air interface 15, the air interface 15 is connected to the main unit 1 through the exhaust pipe 18, and the top end of the Y-shaped tube 14 is connected to the drainage component, and the vacuum pump in the main unit 1 is used to extract the air in the negative pressure tank 2.

[0062] Specifically, the top end of the Y-shaped tube 14 is connected to a drainage tube 17, and the other end of the drainage tube 17 is connected to a silicone gel patch 20 for adhering to the periphery of the wound. The silicone gel patch 20 is provided with a first dressing 21 and a second dressing 22 in sequence facing the wound. Specifically, when in use, first tear off part of the release paper on the back of the silicone gel patch 20, and stick the silicone gel patch 20 near the patient's wound, and then stick the second dressing 22 and the first dressing 21 to the patient's wound in turn, wherein the second dressing 22 is in direct contact with the patient's wound.

[0063] Furthermore, the silicone gel patch 20 also passes through a flushing tube 19, one end of which extends to the middle of the first dressing 21 and the second dressing 22. Depending on the patient's condition, flushing liquid can be appropriately injected between the first dressing 21 and the second dressing 22 through the flushing tube 19, which is beneficial to the patient's recovery. The flushing tube 19 and the drainage tube 17 are both equipped with a flow-stopping structure. Specifically, the flow-stopping structure is used to prevent the flow of the medium in the flushing tube 19 or the drainage tube 17. In this embodiment, it is specifically a sheet-like flow-stopping clip commonly used in the medical field. The silicone gel patch 20 is applied to the skin to form a closed environment. While the wound is negatively pressured and drained, it can be flushed at the same time, thereby promoting wound healing. It can effectively remove necrotic tissue and exudate from the wound, promote healing, reduce the number of dressing changes for patients, reduce workload, and is simple and easy to use with reliable results.

[0064] Specifically, the first dressing 21 uses PU sponge and the second dressing 22 uses PVA sponge. PU sponge has high mechanical strength and elasticity and can withstand large negative pressure without collapsing. PVA sponge has strong liquid absorption capacity and is suitable for treating large amounts of exudate.

[0065] When the present invention performs wound surface negative pressure sealing drainage:

[0066] After attaching the drainage assembly to the patient's wound, connect the drainage tube 17 and the exhaust tube 18. The vacuum pump in the main unit 1 works to gradually reduce the pressure in the negative pressure tank 2. The liquid on the wound flows along the drainage tube 17 to the Y-shaped tube 14.

[0067] Initially, one outlet of the Y-shaped tube 14 is blocked by the sealing plate 8, and both lifting columns 12 are located at the bottom of the measuring cup and are not raised. All the liquid flowing through the Y-shaped tube 14 flows out through the other outlet and enters the corresponding measuring cup 11. The liquid level in the measuring cup 11 gradually rises, causing the floating ring 13 to gradually float up. The lifting columns 12 and the floating ring 13 rise synchronously until their tops contact the other sealing plate 8. As the height of the lifting columns 12 continues to rise, the tops of the lifting columns 12 can push the sealing plate 8 and the rotating frame 7 to start rotating until the tops of the lifting columns 12 contact the sealing plate 8.

[0068] As the rotating frame 7 starts to rotate, the sealing plate 8 that originally blocked the outlet of the Y-shaped tube 14 is unblocked, and liquid flows out of the two outlets of the Y-shaped tube 14 at the same time and is injected into the two measuring cups 11. When the liquid level accumulated in the measuring cup 11 rises to the top of the lifting column 12 in the cup, pushing the sealing plate 8 to seal the corresponding outlet of the Y-shaped tube 14, the liquid level in the measuring cup 11 also just reaches the liquid level height of the siphon pipe 1103 to discharge the liquid. The siphon pipe 1103 quickly discharges the liquid in the measuring cup 11 into the liquid storage tank 4 below. The measuring cup 11 that accumulates liquid first reaches the discharge state earlier than the other measuring cup 11 because it has already accumulated some liquid. Before the liquid in the measuring cup 11 is emptied by the siphon effect, the lifting column 12 in the other measuring cup does not contact the sealing plate 8.

[0069] The lifting column 12 in the measuring cup 11 is rapidly lowered by the lowering of the liquid level in the measuring cup 11, so that the lifting column 12 returns to its initial position. At the same time, the lifting column 12 in the other measuring cup 11 also just touches the sealing plate 8. The above steps are repeated to make the measuring cups 11 discharge the liquid alternately. The camera 16 continuously photographs the measuring cup 11, so that the doctor can calculate the flow rate of the negative pressure drainage and observe the state of the liquid at each moment based on the video or the timed photos, so as to facilitate the good monitoring of the liquid during the drainage process.

[0070] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A wound negative pressure sealing drainage device, characterized in that: include: A main unit (1), a negative pressure tank (2) is installed on the main unit (1), a tank cover (3) is connected to the top of the negative pressure tank (2), and the top of the tank cover (3) is respectively connected to a drainage component and a negative pressure source; A liquid storage tank (4), wherein the liquid storage tank (4) is installed in a negative pressure tank (2), and two measuring cups (11) for containing liquid are installed on the bottom surface of the tank cover (3) facing the inlet of the liquid storage tank (4), and the measuring cups (11) are used to alternately receive liquid introduced into the negative pressure tank (2) by the drainage component. The inner wall of the negative pressure tank (2) is also installed with a camera (16) for monitoring the measuring cup (11), and the tank cover (3) is connected to a Y-shaped tube (14) that penetrates the negative pressure tank (2). Both sides of the Y-shaped tube (14) on the bottom surface of the tank cover (3) are fixedly connected to a mounting frame (5), and a rotating frame (7) is rotatably connected to the mounting frame (5), and the bottom end of the rotating frame (7) is fixedly connected to a A sealing plate (8) is provided for respectively sealing the two outlets of the Y-shaped tube (14); a lifting column (12) is slidably connected in the vertical direction in the measuring cup (11); a floating ring (13) is fixedly connected to the bottom end of the lifting column (12); a liquid guide column (1102) is coaxially fixedly connected to the center of the measuring cup (11); a siphon pipeline (1103) passing through the bottom of the measuring cup (11) is provided in the liquid guide column (1102); the lifting column (12) is able to push the sealing plate (8) toward the outlet of the corresponding Y-shaped tube (14); an inverted conical cup mouth (1101) is fixedly connected to the top of the measuring cup (11); and liquid flow grooves (1201) are provided at intervals in an annular manner on the side wall of the lifting column (12).

2. The wound surface negative pressure sealing drainage device according to claim 1, characterized in that: A rotating shaft (6) is rotatably connected between the mounting frames (5), the rotating frames (7) are fixedly connected to the side walls of the rotating shaft (6), and a counterweight (9) is fixedly connected to the side walls of the rotating shaft (6) corresponding to each rotating frame (7). When a sealing plate (8) connected to one of the rotating frames (7) blocks the outlet of the Y-shaped tube (14), the counterweight (9) close to the rotating frame (7) is in a vertical state.

3. The wound surface negative pressure sealing drainage device according to claim 1, characterized in that: The mounting frame (5) is slidably connected to a clamping plate (10) for clamping a measuring cup (11) in a vertical direction. The clamping plate (10) can be fixedly connected to the mounting frame (5) by bolts, and waist holes are provided in the through holes on the mounting frame (5) for the bolts to pass through.

4. The wound surface negative pressure sealing drainage device according to claim 1, characterized in that: The top surface of the tank cover (3) is also connected to an air interface (15), and the air interface (15) is connected to the main machine (1) via an air extraction pipe (18). The top end of the Y-shaped tube (14) is connected to a drainage component.

5. The wound surface negative pressure sealing drainage device according to claim 4, characterized in that: The top end of the Y-shaped tube (14) is connected to a drainage tube (17), and the other end of the drainage tube (17) is connected to a silicone gel patch (20) for adhering to the periphery of the wound surface. The silicone gel patch (20) is provided with a first dressing (21) and a second dressing (22) in sequence facing the wound surface. The silicone gel patch (20) also passes through a flushing tube (19), and one end of the flushing tube (19) extends to the middle of the first dressing (21) and the second dressing (22). Both the flushing tube (19) and the drainage tube (17) are equipped with a flow-stopping structure.

6. The wound surface negative pressure sealing drainage device according to claim 5, characterized in that: The first dressing (21) is made of PU sponge, and the second dressing (22) is made of PVA sponge.

7. The wound surface negative pressure sealing drainage device according to claim 1, characterized in that: The measuring cup (11) is made of a transparent material, and when the tank cover (3) is connected to the negative pressure tank (2), the measuring cup (11) and the camera (16) are at the same level.

Images