Multifunctional wound negative pressure drainage device
By designing a multifunctional wound negative pressure drainage device, simultaneous drainage of exudate from deep and superficial wounds is achieved, solving the problems of large resource consumption, patient immobility, and accidental removal in existing technologies, and providing a portable and mobile drainage solution.
Patent Information
- Application Number
- CN202420728257.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-10
AI Technical Summary
Current negative pressure wound therapy technology cannot simultaneously drain deep and superficial wound exudate, requires a large amount of medical resources, occupies a large space, restricts patient movement, and the drainage tube is easily accidentally pulled out. When the amount of exudate is large, materials need to be replaced frequently, and the function is not comprehensive.
A multifunctional wound negative pressure drainage device was designed, including a dressing body, a semi-permeable mucosa, a suction tube, a storage bottle, and a miniature handheld negative pressure device. It can simultaneously drain deep and superficial exudates through a suction tank, a suction nozzle, and a suction tube. The drainage tube is fixed with a bracket and a suction cup to reduce the risk of accidental removal. The device can be carried by hand.
It achieves simultaneous drainage of exudate from both deep and superficial wounds, saving medical resources, allowing patients to move around, reducing the risk of accidental removal, avoiding frequent material changes, and featuring a compact and portable structure.
Smart Images
Figure CN222399672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to wound negative pressure drainage equipment, in particular to a multifunctional wound negative pressure drainage device. Background Art
[0002] Negative pressure wound therapy is abbreviated as NPWT. It uses the principle and device of negative pressure to keep the wound surface in a negative pressure state continuously or intermittently, thereby promoting the healing of acute and chronic wounds. Because it improves the efficiency of drainage, accelerates the process of tissue repair and healing, and also reduces the risks and complications of surgery, it is called a revolutionary wound treatment technology in the contemporary era. Whether it is chronic wounds such as diabetic foot, pressure sores, and arteriovenous ulcers, or acute or subacute wounds after burns, surgical incisions, and skin grafts and flaps, negative pressure technology can be used for treatment. It can be said that it is now one of the core technologies in the field of wound treatment. NTWT also includes vacuum sealing drainage (VSD) and vacuum assisted closure (VAC). Both technologies are based on the refinement of negative pressure wound therapy technology in different scenarios.
[0003] The composition and operation of negative pressure wound therapy technology include a polymer foam dressing, which is tailored to the wound surface, and a larger self-adhesive semipermeable membrane on the top to seal the wound surface, and then a drainage tube is connected to the negative pressure suction machine, and then the machine continues to operate and continuously provides a negative pressure environment. The book "American Negative Pressure Wound Therapy Technology" published in 2005 and "Negative Pressure Closed Wound Therapy Theory and Practice" published by People's Health Press in 2018 respectively have detailed introductions to negative pressure wound therapy. Negative pressure wound therapy technology is a non-drug way to promote wound healing. The skin is the largest organ in the human body. It is subject to various endogenous and exogenous mechanical stresses on a daily basis, such as gravity, limb movement, trauma, which are exogenous mechanical stress, blood flow, bone growth, which are endogenous stress. The cells in the skin that participate in tissue healing will respond to these stresses, and then trigger a series of pathophysiological changes, and finally form what everyone sees. Whether it is wound healing or the formation of hyperplastic scars, it is inseparable from the cell's response to mechanical stress. Negative pressure wound therapy technology takes advantage of this characteristic of cells and artificially applies a controllable negative pressure and external force to them, which can induce the reaction we want while avoiding any unwanted results due to abnormal pressure. The induced reaction, that is, the mechanism of action, can be divided into: pulling the wound edge together to promote wound closure, and the wound edge shrinks, which physically increases the chance of tissue closure; increases wound blood flow and improves blood supply to the wound surface; promotes cell proliferation and granulation growth; removes wound exudate and reduces tissue edema; evenly distributes pressure and provides a moist environment; reduces bacterial load and reduces severe reactions...etc.
[0004] However, negative pressure wound therapy technology is not suitable for all wound problems. At present, there are at least the following problems that need to be further improved:
[0005] 1. Wound exudate depends on whether the wound is deep or superficial. The exudate of superficial wounds can be absorbed by foam dressings. However, for some open abdominal surgeries such as acute intestinal obstruction, intestinal perforation, etc., wound exudate after surgery is a common complication, which may be caused by infection, poor suture, vascular damage, tissue necrosis, etc.; some serious patients will see redness and swelling around the wound and exudate flowing out about 5 days after the operation. At this time, wound therapists need to intervene. If the infection is severe, drainage must be performed first, and negative pressure drainage should be performed after the inflammation is controlled to avoid reoperation. After this type of open abdominal surgery, the wound sutured will have deep cavities inside. The wound has been sutured, and the sponge dressing covering the surface cannot absorb the exudate inside the wound. In this case, drainage can only be performed by intubation, that is, inserting a negative pressure drainage tube deep into the wound to absorb the exudate inside. The drainage tube is connected to a negative pressure bottle or the hospital's negative pressure system, but the whole process requires a lot of medical staff and medical resources;
[0006] 2. The negative pressure suction currently used in clinical practice is either connected to the hospital's negative pressure system or is a large negative pressure device, which takes up a lot of medical resources and space, and the patient cannot move during the drainage process;
[0007] 3. The public negative pressure currently used in clinical practice is not constant during peak and non-peak periods due to the number of users, and the pressure will change;
[0008] 4. The current negative pressure wound treatment technology cannot absorb deep wound exudate and superficial wound exudate at the same time, and its function is not comprehensive;
[0009] 5. Existing negative pressure wound therapy technology is inconvenient for patients to carry around, store exudate, and drain in real time;
[0010] 6. For some non-critical patients, negative pressure drainage treatment can be performed at home, but when the patient is operating at home, the drainage tube is often easily scratched or pulled out by mistake due to the patient's negligence, and the drainage tube cannot be effectively fixed;
[0011] 7. Currently, negative pressure therapy is only used for cases with small amounts of exudate. If the amount of exudate is large, new materials need to be replaced. Frequent replacement will increase the pain of the patient and cause new damage to the wound. Utility Model Content
[0012] The utility model aims at least to solve the problem that deep wound exudate and superficial wound exudate cannot be drained at the same time.
[0013] In order to solve the above technical problems, the utility model provides a multifunctional wound negative pressure drainage device, comprising:
[0014] A dressing body, wherein the bottom of the dressing body is provided with a liquid absorption groove, and the liquid absorption groove is provided with a detachably connected dressing strip;
[0015] A semipermeable mucosa, which is fixedly connected or detachably connected to the upper surface of the dressing body; the surface of the semipermeable mucosa has a first suction nozzle and a second suction nozzle connected to the dressing body, the first suction nozzle is connected to a first suction tube, and the second suction nozzle is connected to a second suction tube;
[0016] A pipette, one end of which is connected to the inlet end of the second suction nozzle; the surface of the pipette has at least three suction holes, and the at least three suction holes are evenly distributed around the periphery of the pipette; the pipette has a first thread segment and a second thread segment; the first thread segment is at least partially in the same plane as the suction groove;
[0017] a first main pipe, one end of which is connected to both the first suction pipe and the second suction pipe;
[0018] A liquid storage bottle, the liquid storage bottle has a liquid inlet and an air outlet, and the other end of the first main pipe is connected to the liquid inlet;
[0019] A second main pipe has one end connected to the air outlet and the other end connected to a miniature handheld negative pressure device.
[0020] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, the inlet end of the second suction nozzle is connected to a suction pipe joint, and the suction pipe joint is located in the dressing body or in the second suction nozzle;
[0021] The liquid suction tube is communicated with the suction tube joint.
[0022] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, the surface of the liquid suction tube has a dressing tube sleeve which is fixedly connected or detachably connected.
[0023] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, the first suction tube is installed with a first regulating switch, and the second suction tube is installed with a second regulating switch.
[0024] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, the first suction tube and the second suction tube are connected to the first main pipe via a three-way joint.
[0025] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, the liquid storage bottle is provided with a fixedly connected partition plate, and the partition plate is at a vertical angle.
[0026] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, a detachably connected first sealing cover is provided above the liquid storage bottle, and the liquid inlet and the air outlet are respectively installed on the first sealing cover;
[0027] A detachably connected second sealing cover is provided below the liquid storage bottle.
[0028] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, it includes a liquid absorption block, which can be detachably installed on the liquid storage bottle.
[0029] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, it includes a fixing frame, which has two slots, and the first suction nozzle and the second suction nozzle are detachably installed in the slots; the two ends of the fixing frame are respectively provided with shaft seats, each of the shaft seats is respectively provided with a threaded screw rod, and each of the screw rods is provided with a movably connected suction cup below.
[0030] As a preferred embodiment of the multifunctional wound negative pressure drainage device of the utility model, both ends of the fixing frame have fixedly connected connecting shafts; including a fixing belt, which is movably connected to the connecting shaft.
[0031] Beneficial Effects
[0032] The utility model solves the above existing problems and other existing problems not mentioned above and accordingly brings at least the following innovative advantages:
[0033] The utility model multifunctional wound negative pressure drainage device realizes the simultaneous negative pressure drainage of superficial wounds and the drainage of exudate from deep wounds, providing a new solution for patients with complicated conditions. In addition, the utility model structure does not use large equipment and hospital negative pressure systems, which on the one hand saves some medical resources, and on the other hand, the entire device can be carried around, and the patient can move during the negative pressure drainage process.
[0034] The utility model fixes the first suction nozzle and the second suction nozzle by adding a fixing frame and a card slot; and is initially fixed by a suction cup, and then can be fixed for a second time by a connecting shaft and a fixing belt, and is tied to the patient's body by means of the fixing belt, thereby effectively reducing the risk of being scratched or pulled out by mistake. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0036] Figure 2 It is a three-dimensional schematic diagram of the bottom perspective of the utility model;
[0037] Figure 3 It is an exploded schematic diagram of the utility model;
[0038] Figure 4 It is a top view schematic diagram of the utility model;
[0039] Figure 5 yes Figure 1 A partial enlarged view of the middle A area;
[0040] Figure 6 yes Figure 4 Schematic diagram of the cross section at the AA position;
[0041] Figure 7 yes Figure 4 Schematic diagram of the cross section at the middle BB position;
[0042] Figure 8 yes Figure 6 A partial enlarged schematic diagram of the middle B area;
[0043] Fig. 9 yes Figure 8 A partial enlarged schematic diagram of the middle C area;
[0044] Fig.10 It is a three-dimensional enlarged schematic diagram of the liquid pipette component of the utility model;
[0045] Fig.11 yes Figure 8 Schematic diagram of usage status change;
[0046] Fig.12 It is a three-dimensional schematic diagram of the utility model with an additional fixing frame;
[0047] Fig.13 yes Fig.12 Schematic diagram of the decomposition of
[0048] Fig.14 yes Fig.12 A partial enlarged schematic diagram of the D area in the middle.
[0049] In the figure: 1. dressing body, 2. suction groove, 3. dressing strip, 4. semi-permeable mucosa, 5. first suction nozzle, 6. second suction nozzle, 7. first suction tube, 8. second suction tube, 9. suction tube, 10. suction hole, 11. first threaded section, 12. second threaded section, 13. first main pipe, 14. liquid storage bottle, 15. liquid inlet, 16. air outlet, 17. second main pipe, 18. micro handheld negative pressure device, 19. suction tube joint, 20. dressing tube sleeve, 21. first regulating switch, 22. second regulating switch, 23. three-way joint, 24. partition plate, 25. first sealing cover, 26. second sealing cover, 27. suction block, 28. fixing frame, 29. slot, 30. shaft seat, 31. screw rod, 32. suction cup, 33. connecting shaft, 34. fixing belt. DETAILED DESCRIPTION
[0050] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present disclosure.
[0051] The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only part of the embodiments of the present disclosure, but not all of the embodiments.
[0052] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.
[0053] like Figures 1 to 11 As shown, the utility model multifunctional wound negative pressure drainage device comprises:
[0054] A dressing body 1, the bottom of which is provided with a liquid absorption groove 2, wherein the liquid absorption groove 2 has a detachably connected dressing strip 3; Figure 2 The figure shows that a dressing strip 3 is installed in the suction tank 2. Figure 3 It is shown that the dressing strip 3 can be detached from the suction tank 2; Figure 8 The cross-sectional effect of the dressing strip 3 installed in the liquid suction trough 2 is shown;
[0055] Semipermeable mucosa 4, Figure 2 It is shown that the area of the semipermeable mucosa 4 is larger than the area of the dressing body 1, and the dressing body 1 is located in the middle area of the semipermeable mucosa 4; Figure 3 It is shown that the semi-permeable mucosa 4 is fixedly connected or detachably connected to the upper surface of the dressing body 1; Figure 1 , Figure 3 and Figure 5 The surface of the semi-permeable mucosa 4 is respectively shown to have a first suction nozzle 5 and a second suction nozzle 6 connected to the dressing body 1, the first suction nozzle 5 is connected to a first suction tube 7, and the second suction nozzle 6 is connected to a second suction tube 8;
[0056] Pipette 9, Figure 8 and Fig. 9 It is shown that one end of the pipette 9 is connected to the inlet end of the second suction nozzle 6; see Fig. 9 , the term inlet end refers to Fig. 9 The surface of the pipette 9 has at least three suction holes 10, Fig. 9 and Fig.10 The effect diagram of the liquid suction hole 10 provided on the surface of the liquid suction tube 9 is shown. Fig. 9 and Fig.10 It can be seen that a plurality of suction holes 10 are arranged on the surface of the suction tube 9; at least three suction holes 10 are evenly distributed around the periphery of the suction tube 9; Figure 8 , Fig. 9 and Fig.10 It is shown that the pipette 9 has a first thread segment 11 and a second thread segment 12; Fig. 9 It is shown that the first thread segment 11 is at least partially in the same plane as the liquid suction groove 2; wherein Fig.11 It is shown that when the dressing strip 3 in the liquid suction groove 2 is removed, the liquid suction tube 9 can be bent at the position of the first thread segment 11 and / or the second thread segment 12 and at least partially received in the liquid suction groove 2;
[0057] First Supervisor 13, Figure 5 It is shown that one end of the first main pipe 13 is connected to both the first suction pipe 7 and the second suction pipe 8;
[0058] Liquid storage bottle 14, Figure 1 and Figure 3 The liquid storage bottle 14 is shown to have a liquid inlet 15 and an air outlet 16, and the other end of the first main pipe 13 is connected to the liquid inlet;
[0059] Second Supervisor 17, Figure 1 and Figure 3 It is shown that one end of the second main pipe 17 is connected to the air outlet 16 , and the other end is connected to a miniature handheld negative pressure device 18 .
[0060] The dressing body 1, the dressing strip 3 and the dressing tube number 20 of the utility model are respectively soft and water-absorbent polyvinyl alcohol foam or polyurethane foam.
[0061] The utility model discloses a multifunctional wound negative pressure drainage device, which is applied to wound drainage. The process steps are as follows: a micro handheld negative pressure device 18 generates negative pressure suction, and the negative pressure suction passes through the second main pipe 17, the liquid storage bottle 14 and the first main pipe 13, and then the suction is applied to the first suction nozzle 5 and the second suction nozzle 6 through the first suction pipe 7 and the second suction pipe 8, wherein the dressing body 1 covers the wound surface, the semi-permeable mucosa 4 seals the dressing body 1 in the wound, the suction pipe 9 can be inserted into a cavity deep in the wound, the negative pressure of the first suction nozzle 5 is used to attract exudate on the wound surface, and the second suction nozzle 5 can attract exudate deep in the wound and part of the superficial exudate through the suction pipe 9; when the amount of exudate is large, it can be stored in the liquid storage bottle 14, thereby solving the problem of the need to replace the dressing at present; the utility model realizes the superficial wound and negative pressure drainage and the exudate drainage deep in the wound at the same time, thereby providing a new solution for patients with complicated conditions. In addition, the structure of the utility model does not use large equipment and hospital negative pressure systems, which, on the one hand, partially saves medical resources, and on the other hand, the entire device can be carried around and the patient can move during the negative pressure drainage process.
[0062] For further information, see Fig. 9The inlet end of the second suction nozzle 6 is connected to a suction pipe joint 19, and the suction pipe joint 19 is located in the dressing body 1 or in the second suction nozzle 6. Fig. 9 The pipette 9 is shown to be connected to the pipette connector 19. In addition, the pipette connector 19 is not necessary, and the inlet end of the second suction nozzle 6 can also be used to replace the pipette connector 19; Fig. 9 , that is, directly connect the upper end of the pipette 9 to the inlet end of the second suction nozzle 6.
[0063] For further information, see Fig. 9 The surface of the liquid suction tube 9 has a dressing tube sleeve 20 that is fixedly connected or detachably connected. Figure 1 The effect diagram of the dressing tube sleeve 20 being installed on the liquid suction tube 9 is shown, wherein Figure 3 The effect diagram after the dressing tube sleeve 20 and the suction tube 9 are disassembled is shown.
[0064] For further information, see Figure 5 The first suction pipe 7 is equipped with a first regulating switch 21 , and the second suction pipe 8 is equipped with a second regulating switch 22 .
[0065] Furthermore, Figure 5 It is shown that the first suction pipe 7 and the second suction pipe 8 are connected to the first main pipe 13 via a three-way joint 23 .
[0066] Furthermore, Figure 7 It is shown that the liquid storage bottle 14 has a fixedly connected partition plate 24 in a vertical angle. The liquid storage bottle 14 has a detachably connected first sealing cover 25 above it, and the liquid inlet 15 and the gas outlet 16 are respectively installed on the first sealing cover 25; the liquid storage bottle 14 has a detachably connected second sealing cover 26 below it. It also includes a liquid absorption block 27, which is detachably installed on the liquid storage bottle 14. The liquid absorption block 27 is preferably a sponge or cotton with water absorption performance.
[0067] For further information, see Figure 12 to Figure 14 , including a fixing frame 28, the fixing frame 28 is made of plastic material; Fig.13 and Fig.14 The fixing frame 28 is shown to have two slots 29, and the first suction nozzle 5 and the second suction nozzle 6 are detachably mounted in the slots 29; Fig.14 It is shown that the first suction nozzle 5 and the second suction nozzle 6 are each installed in a slot 29; the two ends of the fixing frame 28 are respectively provided with an axle seat 30, each of the axle seats 30 is respectively provided with a threaded screw rod 31, and each of the screw rods 31 is provided with a movably connected suction cup 32 below.
[0068] For further information, see Fig.14The two ends of the fixing frame 28 have a fixedly connected connecting shaft 33; and include a fixing belt 34, which is movably connected to the connecting shaft 33.
[0069] The utility model fixes the first suction nozzle 5 and the second suction nozzle 6 by adding a fixing frame 28 and a card slot 29; and is initially fixed by a suction cup 32, and then can be fixed for a second time by a connecting shaft 33 and a fixing belt 34, and is tied to the patient's body with the help of the fixing belt 34, thereby effectively reducing the risk of being scratched or accidentally pulled out.
[0070] The words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0071] The above-mentioned preferred embodiments of the utility model are only and are not intended to limit the utility model. The protection scope of the utility model is defined by the attached claims. For ordinary technicians in this field, other embodiments can be obtained according to the drawings without creative work, and any changes based on the claims of the utility model are within the protection scope of the utility model.
Claims
1. Multifunctional wound negative pressure drainage device, characterized in that: include: A dressing body, wherein the bottom of the dressing body is provided with a liquid absorption groove, and the liquid absorption groove is provided with a detachably connected dressing strip; A semipermeable mucosa, which is fixedly connected or detachably connected to the upper surface of the dressing body; the surface of the semipermeable mucosa has a first suction nozzle and a second suction nozzle connected to the dressing body, the first suction nozzle is connected to a first suction tube, and the second suction nozzle is connected to a second suction tube; A pipette, one end of which is connected to the inlet end of the second suction nozzle; the surface of the pipette has at least three suction holes, and the at least three suction holes are evenly distributed around the periphery of the pipette; the pipette has a first thread segment and a second thread segment; the first thread segment is at least partially in the same plane as the suction groove; a first main pipe, one end of which is connected to both the first suction pipe and the second suction pipe; A liquid storage bottle, the liquid storage bottle has a liquid inlet and an air outlet, and the other end of the first main pipe is connected to the liquid inlet; A second main pipe has one end connected to the air outlet and the other end connected to a miniature handheld negative pressure device.
2. The multifunctional wound negative pressure drainage device according to claim 1, characterized in that: The inlet end of the second suction nozzle is connected with a suction tube joint, and the suction tube joint is located in the dressing body or in the second suction nozzle; The liquid suction tube is communicated with the suction tube joint.
3. The multifunctional wound negative pressure drainage device according to claim 1 or 2, characterized in that: The surface of the liquid suction tube is provided with a dressing tube sleeve which is fixedly connected or detachably connected.
4. The multifunctional wound negative pressure drainage device according to claim 1, characterized in that: The first suction pipe is equipped with a first regulating switch, and the second suction pipe is equipped with a second regulating switch.
5. The multifunctional wound negative pressure drainage device according to claim 1 or 4, characterized in that: The first suction pipe and the second suction pipe are connected to the first main pipe through a three-way joint.
6. The multifunctional wound negative pressure drainage device according to claim 1, characterized in that: The liquid storage bottle is provided with a fixedly connected partition plate, which is at a vertical angle.
7. The multifunctional wound negative pressure drainage device according to claim 6, characterized in that: A detachably connected first sealing cover is provided above the liquid storage bottle, and the liquid inlet and the gas outlet are respectively installed on the first sealing cover; A detachably connected second sealing cover is provided below the liquid storage bottle.
8. The multifunctional wound negative pressure drainage device according to claim 7, characterized in that: It comprises a liquid absorbing block which can be detachably mounted on the liquid storage bottle.
9. The multifunctional wound negative pressure drainage device according to claim 1, characterized in that: It comprises a fixing frame, which has two slots, and the first suction nozzle and the second suction nozzle are detachably mounted in the slots; both ends of the fixing frame are provided with shaft seats, each of the shaft seats is provided with a threaded screw rod, and each of the screw rods is provided with a movably connected suction cup below.
10. The multifunctional wound negative pressure drainage device according to claim 9, characterized in that: The two ends of the fixing frame are provided with fixedly connected connecting shafts; and the fixing frame comprises a fixing belt which is movably connected with the connecting shafts.