A negative pressure irrigation device

Abstract

This utility model discloses a negative pressure irrigation device, including a main unit and an irrigation hood. The main unit is equipped with a clean water tank and a wastewater tank. A water supply pipe is installed on the top of the clean water tank, communicating with the bottom of the side end face of the irrigation hood. A suction pipe is installed on the top of the wastewater tank, communicating with the top of the irrigation hood. A vacuum pump is installed inside the main unit. The irrigation hood is equipped with an upper layer of buffer sponge, a guide plate, and a lower layer of buffer sponge. This utility model has the advantages of independent separation of the clean water tank and wastewater tank, coordinated control of negative pressure and irrigation, and uniform rinsing, solving the problems of incomplete wound cleaning and lack of effective irrigation function in traditional negative pressure therapy.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure wound therapy technology, specifically a negative pressure irrigation device. Background Technology

[0002] In clinical surgery, trauma care, and the treatment of chronic wounds (such as pressure ulcers, diabetic foot ulcers, and postoperative infected wounds), wound cleaning and continuous irrigation are crucial for preventing infection and promoting healing. Traditional wound irrigation methods often employ manual syringes or open drip irrigation, which suffer from problems such as incomplete irrigation, cumbersome operation, and the risk of secondary contamination. Furthermore, they cannot achieve continuous and uniform irrigation or effective recovery of contaminated fluid, failing to meet the demands of modern wound care for efficient, safe, and automated treatment.

[0003] In recent years, negative pressure wound therapy (NPWT) has been increasingly applied to the management of complex wounds. This technique applies controlled negative pressure to the wound surface to promote exudate drainage, improve local blood circulation, and accelerate tissue regeneration. While negative pressure drainage can effectively remove wound exudate and necrotic tissue debris, clinical practice shows that relying solely on negative pressure is insufficient to completely remove bacteria, pus, fibrin deposits, and residual medications from the wound surface. Especially in infected wounds or wounds with abundant necrotic tissue, negative pressure alone cannot achieve deep irrigation and dissolution, leading to the continued presence of pathogens, affecting granulation tissue growth, and even causing infection spread or treatment failure. Therefore, a negative pressure irrigation device is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a negative pressure irrigation device, which has the advantages of independent separation of clean water tank and wastewater tank, coordinated control of negative pressure and irrigation, and uniform rinsing, and solves the problems of incomplete wound cleaning and lack of effective irrigation function in traditional negative pressure treatment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure irrigation device, comprising a main unit and an irrigation hood, wherein the main unit is provided with a clean water tank and a wastewater tank, the top of the clean water tank is provided with a water supply pipe that communicates with the bottom of the side end face of the irrigation hood, the top of the wastewater tank is provided with a suction pipe that communicates with the top of the irrigation hood, a vacuum pump is provided inside the main unit, and an upper buffer sponge, a guide plate and a lower buffer sponge are provided inside the irrigation hood.

[0006] Preferably, the upper surface of the main unit is provided with a first mounting groove that slides with the clean water tank and a second mounting groove that slides with the wastewater tank, and the front surface of the main unit is provided with a control panel.

[0007] Preferably, the top of the sewage tank is provided with a negative pressure interface that communicates with the air inlet of the vacuum pump, and the top of the sewage tank is provided with a return pipe that communicates with the suction pipe, the bottom of the return pipe being flush with the bottom of the sewage tank.

[0008] Preferably, the top of the clean water tank is provided with a water inlet pipe that is connected to the water supply pipe, the bottom of the water inlet pipe is flush with the bottom of the clean water tank, and the top of the clean water tank is provided with an air inlet pipe.

[0009] Preferably, the side end face of the air intake pipe is provided with longitudinally arranged air holes, and the air intake pipe is provided with a threaded pressure regulating cover.

[0010] Preferably, the irrigation hood is made of soft silicone.

[0011] Preferably, the guide plate is provided with a guide chamber, and the bottom of the guide chamber is provided with drainage holes that pass through the bottom of the guide plate.

[0012] Preferably, the top of the guide plate is uniformly provided with return holes that extend through the bottom of the guide plate, and the return holes are a plurality of circular through holes.

[0013] Preferably, the bottom edge of the irrigation hood is provided with pressure-sensitive adhesive, and the bottom of the irrigation hood is provided with release paper.

[0014] Preferably, the bottom of the first and second mounting slots is provided with positioning slots, and the bottom of the clean water tank and the wastewater tank is provided with positioning pads that cooperate with the positioning slots.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a vacuum pump to create negative pressure in the wastewater tank, and the combination of a high-level negative pressure interface and a low-level return pipe effectively avoids the risk of wastewater being sucked back into the vacuum pump. Simultaneously, the water inlet pipe extending to the bottom of the clean water tank and the multi-hole air inlet pipe with a pressure regulating cover can adjust the negative pressure level inside the irrigation hood, ensuring that physiological saline is stably drawn in and used for wound irrigation. This structure solves the problems of inaccurate negative pressure control and pump contamination, ensuring the safety and controllability of the irrigation process. By using independent and slidable clean water and wastewater tanks, along with a bottom positioning groove and positioning pad structure, quick disassembly and stable fixing of the tanks are achieved, facilitating the replenishment of clean water and the cleaning of wastewater. It also prevents accidental displacement of the tanks during operation, solving the problems of inconvenient cleaning and poor stability of traditional irrigation devices, and improving the efficiency and reliability of clinical use.

[0016] 2. The irrigation cover of this utility model is made of soft silicone material, with an internal guide plate and double-layer buffer sponge. Combined with the evenly distributed drainage holes and return holes at the bottom, it can conform to the wound under negative pressure, evenly disperse the irrigation fluid, and effectively recover the waste fluid. Combined with the edge pressure-sensitive adhesive and release paper design, it realizes rapid sealing and fixation of the irrigation cover. This overall structure significantly improves the irrigation effect and fit comfort of the wound, and solves the problems of uneven irrigation and poor sealing in traditional irrigation. It is suitable for a variety of clinical wound treatment scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 For the present utility model Figure 2 Sectional view of AA in the middle; Figure 4 For the present utility model Figure 2 Cross-sectional view of the middle section (BB); Figure 5 For the present utility model Figure 2 CC section view; Figure 6 For the present utility model Figure 3 Enlarged view at point D; Figure 7 For the present utility model Figure 5 Enlarged view of point E in the middle.

[0018] In the diagram: 1. Main unit; 101. Control panel; 102. First mounting slot; 103. Second mounting slot; 104. Vacuum pump; 105. Positioning slot; 2. Irrigation hood; 201. Suction port; 2011. Release paper; 202. Water inlet; 203. Upper buffer sponge; 204. Lower buffer sponge; 205. Guide plate; 2051. Guide chamber; 2052. Drain hole; 2053. Return hole; 3. Clean water tank; 301. Water supply pipe; 302. Air inlet pipe; 303. Pressure regulating cover; 304. Air vent; 4. Wastewater tank; 401. Negative pressure interface; 402. Return pipe; 403. Positioning pad; 5. Suction pipe; 6. Water supply pipe. Detailed Implementation

[0019] Please see Figures 1-7A negative pressure irrigation device includes a main unit 1 and an irrigation hood 2. The main unit 1 is equipped with a clean water tank 3 and a wastewater tank 4. The top of the clean water tank 3 is equipped with a water supply pipe 6 that communicates with the water inlet 202 at the bottom of the side end face of the irrigation hood 2. The top of the wastewater tank 4 is equipped with a suction pipe 5 that communicates with the suction port 201 at the top of the irrigation hood 2. The main unit 1 is equipped with a vacuum pump 104. The irrigation hood 2 is equipped with an upper buffer sponge 203, a guide plate 205 and a lower buffer sponge 204.

[0020] Furthermore, the upper surface of the main unit 1 is provided with a first mounting groove 102 that slides with the clean water tank 3 and a second mounting groove 103 that slides with the sewage tank 4, and the front surface of the main unit 1 is provided with a control panel 101.

[0021] The sliding connection between the clean water tank 3 and the wastewater tank 4 facilitates the disassembly and installation of the clean water tank 3 and the wastewater tank 4, and makes it easy to replenish the clean water tank 3 with saline solution and clean the wastewater tank 4.

[0022] Furthermore, the top of the sewage tank 4 is provided with a negative pressure interface 401 that communicates with the air inlet of the vacuum pump 104, and the top of the sewage tank 4 is provided with a return pipe 402 that communicates with the suction pipe 5. The bottom of the return pipe 402 is flush with the bottom of the sewage tank 4.

[0023] The vacuum pump 104 draws in the sewage tank 4 to create a negative pressure, thereby drawing the sewage from the rinsing hood 2 after rinsing the wound into the sewage tank 4. The return pipe 402 is low and the negative pressure port 401 is high to prevent sewage from entering the vacuum pump 104.

[0024] Furthermore, the top of the clean water tank 3 is provided with a water inlet pipe 301 that is connected to the water supply pipe 6. The bottom of the water inlet pipe 301 is flush with the bottom of the clean water tank 3. The top of the clean water tank 3 is provided with an air inlet pipe 302.

[0025] When the vacuum pump 104 draws air, a negative pressure is formed inside the irrigation hood 2, thereby drawing the saline solution in the clean water tank 3 into the irrigation hood 2 to rinse the wound surface.

[0026] Furthermore, the side end face of the intake pipe 302 is uniformly provided with longitudinally arranged air holes 304, and the intake pipe 302 is provided with a threaded pressure regulating cover 303.

[0027] By rotating the pressure regulating cover 303, the number of exposed vents 304 is adjusted, the air intake rate is adjusted, and the negative pressure inside the irrigation hood 2 is adjusted.

[0028] Furthermore, the irrigation hood 2 is made of soft silicone.

[0029] The irrigation cover 2, made of soft silicone, can compress the upper and lower layers of sponge inside when a negative pressure is formed, making them fit against the wound surface, thereby further improving the irrigation effect on the wound.

[0030] Furthermore, a flow guide chamber 2051 is provided inside the flow guide plate 205, and drainage holes 2052 that pass through the bottom of the flow guide plate 205 are evenly provided at the bottom of the flow guide chamber 2051.

[0031] The aspirated saline solution is evenly distributed to each drain hole 2052 by the guide plate 205, thereby uniformly rinsing the wound and improving the wound cleaning effect.

[0032] Furthermore, the top of the guide plate 205 is uniformly provided with return holes 2053 that pass through the bottom of the guide plate 205, and the return holes 2053 are several circular through holes.

[0033] After the saline solution passes through the drain hole 2052, it is used to rinse the wound through the lower buffer sponge 204. Then, carrying the rinsed pus and other dirt, it flows back into the sewage tank 4 through the return hole 2053.

[0034] Furthermore, pressure-sensitive adhesive is provided on the bottom edge of the rinsing hood 2, and release paper 2011 is provided on the bottom of the rinsing hood 2.

[0035] After peeling off the release paper 2011, the irrigation cover 2 can be placed on the wound and adhered to the skin surface, improving ease of use.

[0036] Furthermore, the bottom of the first mounting groove 102 and the second mounting groove 103 is provided with a positioning groove 105, and the bottom of the clean water tank 3 and the sewage tank 4 is provided with a positioning pad 403 that cooperates with the positioning groove 105.

[0037] The positioning groove 105 and the positioning pad 403 work together to prevent the clean water tank 3 and the sewage tank 4 from sliding, thereby improving the stability of the equipment.

[0038] When using this equipment, the clean water tank 3 is pulled out from the first mounting slot 102 on the upper side of the main unit 1, and sufficient physiological saline is added to the clean water tank 3. After replenishment, the clean water tank 3 is placed back into the first mounting slot 102. At this time, the positioning pad 403 at the bottom of the clean water tank 3 will precisely engage with the positioning slot 105 at the bottom of the first mounting slot 102 to prevent the clean water tank 3 from sliding. Next, check whether the wastewater tank 4 is clean. If it is clean, place it into the second mounting slot 103. Similarly, the engagement of the positioning pad 403 and the positioning slot 105 ensures the stability of the wastewater tank 4. Then, connect one end of the water supply pipe 6 to the water inlet pipe 301 at the top of the clean water tank 3, and the other end to the bottom of the side end of the irrigation hood 2. Finally, connect one end of the suction pipe 5... The return pipe 402 is connected to the top of the sewage tank 4, and the other end is connected to the top of the irrigation hood 2. At the same time, confirm that the negative pressure interface 401 on the top of the sewage tank 4 is connected to the air inlet of the vacuum pump 104 in the main unit 1. After completing the pipeline connection, peel off the release paper 2011 at the bottom of the irrigation hood 2 to expose the pressure-sensitive adhesive at the bottom edge. Gently press the irrigation hood 2 against the patient's wound to make the pressure-sensitive adhesive adhere tightly to the skin surface outside the wound, thus fixing the irrigation hood 2. Next, perform parameter adjustment and start-up operations. By rotating the threaded pressure regulating cover 303 on the air inlet pipe 302 on the top of the clean water tank 3, adjust the number of exposed longitudinally arranged air holes 304 on the side end face of the air inlet pipe 302, thereby controlling the air intake rate. The negative pressure inside the irrigation hood 2 is then adjusted to achieve suitable treatment parameters. The device is then started via the control panel 101 on the front side of the main unit 1, and the vacuum pump 104 begins operation, drawing air from the wastewater tank 4 to create a negative pressure. This negative pressure is transmitted to the irrigation hood 2. Under this negative pressure, the saline solution in the clean water tank 3 enters the irrigation hood 2 through the water inlet pipe 301 and the water supply pipe 6. It first flows into the guide chamber 2051 of the guide plate 205. The evenly distributed drain holes 2052 at the bottom of the guide chamber 2051 evenly disperse the saline solution. After passing through the drain holes 2052, the saline solution permeates through the lower buffer sponge 204 and acts on the wound surface, achieving wound treatment. After rinsing evenly, the saline solution carrying pus and other contaminants passes through the evenly distributed circular return holes 2053 at the top of the guide plate 205, and then enters the wastewater tank 4 through the suction tube 5 and the return tube 402. After treatment, first turn off the equipment through the control panel 101, disconnect the water supply pipe 6 from the suction tube 5, gently peel off the irrigation cover 2 from the patient's skin and dispose of it properly. Then, pull out the clean water tank 3 and the wastewater tank 4 from the first installation slot 102 and the second installation slot 103 respectively, pour out the remaining saline solution in the clean water tank 3 and clean it, empty the contaminants in the wastewater tank 4 and thoroughly clean and disinfect it. After that, dry all parts and store them properly in their original positions for the next use.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure irrigation device, comprising a main unit (1) and an irrigation hood (2), characterized in that: The main unit (1) is equipped with a clean water tank (3) and a wastewater tank (4). The top of the clean water tank (3) is equipped with a water supply pipe (6) that is connected to the bottom of the side end face of the irrigation hood (2). The top of the wastewater tank (4) is equipped with a suction pipe (5) that is connected to the top of the irrigation hood (2). The main unit (1) is equipped with a vacuum pump (104). The irrigation hood (2) is equipped with an upper buffer sponge (203), a guide plate (205), and a lower buffer sponge (204).

2. The negative pressure irrigation device according to claim 1, characterized in that: The upper end face of the main unit (1) is provided with a first mounting groove (102) that slides with the clean water tank (3) and a second mounting groove (103) that slides with the sewage tank (4). The front end face of the main unit (1) is provided with a control panel (101).

3. The negative pressure irrigation device according to claim 1, characterized in that: The top of the sewage tank (4) is provided with a negative pressure interface (401) that is connected to the air inlet of the vacuum pump (104), and the top of the sewage tank (4) is provided with a return pipe (402) that is connected to the suction pipe (5). The bottom of the return pipe (402) is flush with the bottom of the sewage tank (4).

4. The negative pressure irrigation device according to claim 1, characterized in that: The top of the clean water tank (3) is provided with a water inlet pipe (301) that is connected to the water supply pipe (6). The bottom of the water inlet pipe (301) is flush with the bottom of the clean water tank (3). The top of the clean water tank (3) is provided with an air inlet pipe (302).

5. A negative pressure irrigation device according to claim 4, characterized in that: The side end face of the air intake pipe (302) is uniformly provided with longitudinally arranged air holes (304), and the air intake pipe (302) is provided with a threaded pressure regulating cover (303).

6. The negative pressure irrigation device according to claim 1, characterized in that: The irrigation hood (2) is made of soft silicone.

7. The negative pressure irrigation device according to claim 1, characterized in that: The guide plate (205) is provided with a guide chamber (2051), and the bottom of the guide chamber (2051) is provided with drainage holes (2052) that pass through the bottom of the guide plate (205).

8. The negative pressure irrigation device according to claim 1, characterized in that: The top of the guide plate (205) is uniformly provided with return holes (2053) that pass through the bottom of the guide plate (205), and the return holes (2053) are several circular through holes.

9. A negative pressure irrigation device according to claim 1, characterized in that: The bottom edge of the irrigation hood (2) is provided with pressure-sensitive adhesive, and the bottom of the irrigation hood (2) is provided with release paper (2011).

10. A negative pressure irrigation device according to claim 2, characterized in that: The bottom of the first mounting groove (102) and the second mounting groove (103) is provided with a positioning groove (105), and the bottom of the clean water tank (3) and the sewage tank (4) is provided with a positioning pad (403) that cooperates with the positioning groove (105).

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