Sustainable negative pressure drainage device
The two-stage negative pressure connecting tube and detachable drainage bag design solves the problems of inconvenient drainage bag replacement and unstable connection in existing devices, achieves sustainable drainage, reduces the risk of infection and improves work efficiency.
Patent Information
- Application Number
- CN202421651324.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In existing negative pressure drainage devices, the drainage bag is difficult to replace and the connection is easily loose or difficult to remove, which affects work efficiency and increases the risk of infection.
A sustainable negative pressure drainage device was designed, which adopted a two-stage negative pressure connecting tube and a detachable drainage bag structure. A stable connection was achieved through a threaded connection, and the second drainage bag could be installed without removing the first drainage bag to achieve sustainable drainage.
It reduces the harm to patients caused by replacing drainage bags, reduces the risk of cross infection, and improves the work efficiency of medical staff.
Smart Images
Figure CN223350646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a sustainable negative pressure drainage device. Background Art
[0002] Negative pressure drainage is a necessary treatment method after various surgeries. The commonly used device at present is a negative pressure drainage bag. The negative pressure drainage bag consists of a drainage tube and a bag body. The bag body is provided with a liquid inlet tube and a negative pressure interface. One end of the drainage tube is connected to the liquid inlet of the bag body, and the negative pressure interface is connected to the device that generates negative pressure. The amount of liquid that the drainage bag can hold is limited. If the amount of liquid exceeds the specified amount, there will be no absorption effect. Therefore, when in use, the drainage bag needs to be replaced frequently, which is troublesome to operate, increases the workload of medical staff, and is easy to infect the wound. At the same time, when connecting the drainage bag to the device that generates negative pressure, it is generally connected in a plug-in manner, which is easy to loosen or difficult to remove, affecting the negative pressure effect and reducing work efficiency. Utility Model Content
[0003] In response to the existing problems of cumbersome drainage bag replacement and loose or difficult removal of the connection between the drainage bag and the negative pressure generating device, the present invention provides a sustainable negative pressure drainage device that can improve the work efficiency of medical staff while reducing the harm to patients caused by frequent replacement of negative pressure drainage components. The specific technical solution is as follows:
[0004] a first drainage bag for storing drained liquid, the first drainage bag being provided with a drainage tube and a negative pressure connecting tube, one end of the drainage tube being a free end and provided with a first regulating valve, the other end being inserted into the first drainage bag and close to the bottom of the first drainage bag, and one end of the negative pressure connecting tube being inserted into the first drainage bag and close to the bag opening of the first drainage bag;
[0005] a second drainage bag, the second drainage bag being movably connected to the bottom of the first drainage bag away from the bag opening and being used to receive the liquid stored in the first drainage bag; the first drainage bag being provided with a second regulating valve corresponding to the second drainage bag, the second regulating valve being used to control the flow path between the first drainage bag and the second drainage bag; and
[0006] a negative pressure generator, which provides a negative pressure environment for the first drainage bag and is connected to the first drainage bag via the negative pressure connecting tube;
[0007] Among them, the negative pressure connecting tube includes a first tube section and a second tube section, the second tube section is provided with a third regulating valve, one end of the first tube section is inserted into the first drainage bag, the other end of the first tube section is movably connected to one end of the second tube section, and the other end of the second tube section is connected to the negative pressure generator.
[0008] Preferably, the end of the first tube segment protruding from the first drainage bag is provided with a connecting piece, the peripheral side of the connecting piece is provided with an external thread, the second tube segment is movably provided with a connecting sleeve, the connecting sleeve is provided with an internal thread, and the first tube segment and the second tube segment are connected to the connecting sleeve through the connecting piece.
[0009] Preferably, the connecting sleeve includes a first sleeve and a second sleeve, the first sleeve is sleeved on the second pipe section, the second sleeve is movably sleeved on the first sleeve, the first sleeve moves along the axial direction of the first sleeve, and the inner wall of the second sleeve is provided with the internal thread.
[0010] Preferably, the first sleeve is provided with two baffles, which are respectively provided at the ends of the first sleeve, and the second sleeve moves within the restriction range of the two baffles.
[0011] Preferably, the bag opening of the first drainage bag is provided with a bag cover, the bag cover is provided with a limiting hole, the inner wall of the limiting hole is provided with a sealing layer, the drainage tube and the first tube section are inserted into the bag cover and sealed by the sealing layer.
[0012] Preferably, a check valve is provided at the end of the drainage tube inserted into the first drainage bag to prevent liquid from flowing back.
[0013] Preferably, a buffer pad is provided at the free end of the drainage tube, and the buffer pad is provided with a fluid channel corresponding to the drainage tube, and the buffer pad is used to reduce damage to the human body caused by the drainage tube.
[0014] Preferably, the buffer pad includes a soft rubber buffer cap and a limiting column. The soft rubber buffer cap is a hemispherical structure. The soft rubber buffer cap has an arc surface and a groove. The arc surface is arranged opposite to the groove. One end of the limiting column is connected to the groove, and the other end is inserted into the drainage tube.
[0015] Preferably, one end of the first drainage bag where the second regulating valve is provided is provided with a connecting tube, and the second drainage bag is correspondingly provided with a connector, the connector is connected to the interior of the second drainage bag, and the first drainage bag and the second drainage bag are connected to the connector through the connecting tube.
[0016] Compared with the prior art, the beneficial effects of the present invention are:
[0017] This sustainable negative pressure drainage device can detachably install the second drainage bag without removing the first drainage bag, thereby achieving sustainable drainage of the negative pressure drainage device and further reducing the harm to patients caused by replacing the drainage bag. At the same time, the two-section design of the negative pressure connecting tube can prevent the second tube section from being contaminated by the accumulated fluid, thereby reducing the risk of cross infection between patients; the first drainage bag and the negative pressure generator are detachably connected, which can ensure that the connection between the two is stable and easy to remove, thereby improving the work efficiency of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic structural diagram of the sustainable negative pressure drainage device of the utility model;
[0019] Figure 2 It is a cross-sectional schematic diagram of the sustainable negative pressure drainage device of the utility model;
[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0022] In the accompanying drawings, 1. first drainage bag; 11. drainage tube; 12. first regulating valve; 13. bag cover; 14. cushion; 141. soft rubber cushion cap; 142. limiting column; 15. connecting tube; 16. second regulating valve; 2. second drainage bag; 21. connector; 3. negative pressure generator; 4. negative pressure connecting pipe; 41. first pipe section; 411. connecting piece; 42. second pipe section; 421. first sleeve; 422. second sleeve; 423. baffle; 43. third regulating valve; 5. exhaust valve. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0024] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.
[0025] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.
[0026] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0027] In view of this, the present invention provides a sustainable negative pressure drainage device, please refer to Figures 1 to 4 As shown, the negative pressure drainage device includes a first drainage bag 1, a second drainage bag 2 and a negative pressure generator 3. The first drainage bag 1 is used to store the drained liquid. The first drainage bag 1 is provided with a drainage tube 11 and a negative pressure connecting tube 4. One end of the drainage tube 11 is a free end and is provided with a first regulating valve 12. The other end is inserted into the first drainage bag 1 and is close to the bottom of the first drainage bag 1. One end of the negative pressure connecting tube 4 is inserted into the first drainage bag 1 and is provided close to the bag opening of the first drainage bag 1; the second drainage bag 2 is movably connected to the bottom of the first drainage bag 1 away from the bag opening, and is used to receive the liquid stored in the first drainage bag 1. The first drainage bag 1 corresponds to the The second drainage bag 2 is provided with a second regulating valve 16, which is used to control the flow path between the first drainage bag 1 and the second drainage bag 2; the negative pressure generator 3 provides a negative pressure environment for the first drainage bag 1, and the negative pressure generator 3 is connected to the first drainage bag 1 through the negative pressure connecting tube 4; wherein, the negative pressure connecting tube 4 includes a first tube section 41 and a second tube section 42, and the second tube section 42 is provided with a third regulating valve 43, one end of the first tube section 41 is inserted into the first drainage bag 1, and the other end of the first tube section 41 is movably connected to one end of the second tube section 42, and the other end of the second tube section 42 is connected to the negative pressure generator 3.
[0028] The negative pressure generator 3 is used to vacuum the first drainage bag 1 when the first drainage bag 1 is sealed, so that negative pressure is formed in the first drainage bag 1, and the pressure difference between the air pressure at the tube mouth of the drainage tube 11 and the pressure in the first drainage bag 1 is used to make the accumulated fluid in the human body flow into the first drainage bag 1 for collection. The first regulating valve 12 can control the on-off and flow rate of the drainage tube 11, and the third regulating valve 43 can control the on-off of the negative pressure connecting tube 4 and adjust the speed of vacuuming.
[0029] Furthermore, the two-section design of the negative pressure connecting tube 4 can prevent the pipeline connected to the negative pressure generator 3 from being contaminated by accumulated fluid, thereby reducing the risk of cross infection between patients.
[0030] In a preferred embodiment, Figure 3 As shown, the end of the first tube segment 41 protruding from the first drainage bag 1 is sleeved with a connector 411, the circumference of which is provided with an external thread. The second tube segment 42 is movably sleeved with a connecting sleeve, which is provided with an internal thread. The first tube segment 41 and the second tube segment 42 are connected to the connecting sleeve via the connecting sleeve 411. After the first tube segment 41 and the second tube segment 42 are docked, the connecting sleeve is rotated to threadably connect the connecting sleeve to the connector 411, thereby achieving a detachable connection between the first drainage bag 1 and the negative pressure generator 3, making it easy to disassemble and assemble the first drainage bag 1, which is convenient and quick, and improves the work efficiency of medical staff.
[0031] In a preferred embodiment, Figure 3 As shown, the connecting sleeve includes a first sleeve 421 and a second sleeve 422. The first sleeve 421 is sleeved on the second pipe section 42, and the second sleeve 422 is movably sleeved on the first sleeve 421. The first sleeve 421 moves along the axial direction of the first sleeve 421. The inner wall of the second sleeve 422 is provided with the internal thread. Furthermore, the connector 411 and the connecting sleeve are both made of plastic material, which is environmentally friendly, light in weight, and low in cost. In order to further improve the connection strength between the connector 411 and the first pipe section 41, and between the first sleeve 421 and the second pipe section 42, rubber pads are provided between the connector 411 and the first pipe section 41, and between the first sleeve 421 and the second pipe section 42. At the same time, the sealing between the first pipe section 41 and the second pipe section 42 is also improved, thereby better creating a negative pressure environment for the first drainage bag 1.
[0032] In a preferred embodiment, Figure 3 As shown, the first housing 421 is provided with two baffles 423, which are respectively provided at the ends of the first housing 421, and the second housing 422 moves within the restricted range of the two baffles 423. The baffles 423 are provided to limit the range of movement of the second housing 422 to prevent it from separating from the first housing 421.
[0033] In a preferred embodiment, Figure 1 and Figure 2As shown, the opening of the first drainage bag 1 is provided with a bag cover 13, which defines a limiting hole. The inner wall of the limiting hole is provided with a sealing layer. The drainage tube 11 and the first tube section 41 are inserted into the bag cover 13 and sealed by the sealing layer. Specifically, the bag cover 13 is firmly connected to the first drainage bag 1 through heat pressing. The provision of the sealing layer also improves the sealing performance of the first drainage bag 1, facilitating the formation of negative pressure.
[0034] In a preferred embodiment, a check valve is provided at the end of the drainage tube 11 inserted into the first drainage bag 1 to prevent liquid from flowing back.
[0035] In a preferred embodiment, Figure 1 and Figure 2 As shown, the free end of the drainage tube 11 is provided with a cushion 14. The cushion 14 is provided with a fluid channel corresponding to the drainage tube 11. The cushion 14 is used to reduce damage to the human body caused by the drainage tube 11. The provision of the cushion 14 prevents the end edge of the drainage tube 11 from causing secondary damage to the tissue deep in the wound when the free end of the drainage tube 11 penetrates the wound. The accumulated fluid deep in the wound is affected by the negative pressure and flows through the fluid channel into the first drainage bag 1.
[0036] In a preferred embodiment, Figure 1 and Figure 2 As shown, the cushion pad 14 includes a soft rubber cushion cap 141 and a limiting post 142. The soft rubber cushion cap 141 is a hemispherical structure with a curved surface and a groove. The curved surface and the groove are arranged opposite each other. One end of the limiting post 142 is connected to the groove, and the other end is inserted into the drainage tube 11. By blunting the end edge of the drainage tube 11, the drainage tube 11 can effectively prevent secondary damage to the wound.
[0037] In a preferred embodiment, Figure 4As shown, the end of the first drainage bag 1 where the second regulating valve 16 is provided is provided with a connecting tube 15, and the second drainage bag 2 is correspondingly provided with a connector 21. The connector 21 is in communication with the interior of the second drainage bag 2, and the first drainage bag 1 and the second drainage bag 2 are connected to the connector 21 via the connecting tube 15. Specifically, an exhaust valve 5 is provided at the end of the second drainage bag 2 away from the connector 21. When the accumulated fluid in the first drainage bag 1 reaches the maximum capacity that the first drainage bag 1 can store, the connector 21 is threadedly connected to the connecting tube 15, so that the second drainage bag 2 is quickly connected to the first drainage bag 1, and the second regulating valve 16 and the exhaust valve 5 are opened to allow the accumulated fluid in the first drainage bag 1 to flow smoothly into the second drainage bag 2. The detachable design can avoid the harm to the patient caused by frequent replacement of the first drainage bag 1. At the same time, the disposable first drainage bag 1 and the disposable second drainage bag 2 are used without cleaning, which can avoid accidents such as cross infection.
[0038] Working principle: First, close the first regulating valve 12 and the second regulating valve 16, open the third regulating valve 43, open the passage between the negative pressure generator 3 and the first drainage bag 1, start the negative pressure generator 3, and form a negative pressure environment inside the first drainage bag 1, then close the third regulating valve 43, insert the drainage tube 11 into the position where drainage is required, open the first regulating valve 12, and the accumulated fluid flows along the drainage tube 11 to the first drainage bag 1. When the capacity of the first drainage bag 1 reaches its limit, close the first regulating valve 12 and close the second regulating valve 43. The drainage bag 2 is connected to the first drainage bag 1. After the connection is completed, the second regulating valve 16 and the exhaust valve 5 are opened to allow the accumulated fluid to flow into the second drainage bag 2. After all the accumulated fluid has flowed into the second drainage bag 2, the second regulating valve 16 and the exhaust valve 5 are closed, and the steps of creating a negative pressure environment and draining the accumulated fluid to the first drainage bag 1 are repeated to achieve continuous negative pressure drainage. After all the accumulated fluid has been sucked out, a threaded cover can be provided on the joint 21 and the connecting tube 15 to prevent the accumulated fluid from flowing out of the first drainage bag 1 and the second drainage bag 2.
[0039] To sum up, the sustainable negative pressure drainage device can detachably install the second drainage bag 2 without removing the first drainage bag 1, thereby realizing sustainable drainage of the negative pressure drainage device and further reducing the damage to patients caused by replacing the drainage bag. At the same time, the two-stage design of the negative pressure connecting tube 4 can avoid the second tube section 42 from being contaminated by the accumulated fluid, thereby reducing the risk of cross-infection between patients; the first drainage bag 1 and the negative pressure generator 3 adopt a detachable connection, which can ensure that the connection between the two is stable and easy to remove, thereby improving the work efficiency of medical staff.
[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the patent application of the present invention. All equivalent changes, equivalent replacements or modified changes within the technical spirit and principles suggested by the present invention should be included in the scope of patent protection covered by the present invention.
Claims
1. A sustainable negative pressure drainage device, characterized in that: include: a first drainage bag for storing drained liquid, the first drainage bag being provided with a drainage tube and a negative pressure connecting tube, one end of the drainage tube being a free end and provided with a first regulating valve, the other end being inserted into the first drainage bag and close to the bottom of the first drainage bag, and one end of the negative pressure connecting tube being inserted into the first drainage bag and close to the bag opening of the first drainage bag; a second drainage bag, the second drainage bag being movably connected to the bottom of the first drainage bag away from the bag opening, and being used to receive the liquid stored in the first drainage bag; the first drainage bag being provided with a second regulating valve corresponding to the second drainage bag, and the second regulating valve being used to control the flow path between the first drainage bag and the second drainage bag; as well as a negative pressure generator, which provides a negative pressure environment for the first drainage bag and is connected to the first drainage bag via the negative pressure connecting tube; Among them, the negative pressure connecting tube includes a first tube section and a second tube section, the second tube section is provided with a third regulating valve, one end of the first tube section is inserted into the first drainage bag, the other end of the first tube section is movably connected to one end of the second tube section, and the other end of the second tube section is connected to the negative pressure generator.
2. The sustainable negative pressure drainage device according to claim 1, characterized in that: The end of the first tube segment protruding from the first drainage bag is sleeved with a connector, the peripheral side of the connector is provided with an external thread, the second tube segment is movably sleeved with a connecting sleeve, the connecting sleeve is provided with an internal thread, and the first tube segment and the second tube segment are connected to the connecting sleeve through the connecting piece.
3. The sustainable negative pressure drainage device according to claim 2, characterized in that: The connecting sleeve includes a first sleeve and a second sleeve. The first sleeve is sleeved on the second pipe section. The second sleeve is movably sleeved on the first sleeve. The first sleeve moves along the axial direction of the first sleeve. The inner wall of the second sleeve is provided with the internal thread.
4. The sustainable negative pressure drainage device according to claim 3, characterized in that: The first sleeve is provided with two baffles, which are respectively provided with the ends of the first sleeve, and the second sleeve moves within the restricted range of the two baffles.
5. The sustainable negative pressure drainage device according to claim 1, characterized in that: The bag opening of the first drainage bag is provided with a bag cover, the bag cover is provided with a limiting hole, the inner wall of the limiting hole is provided with a sealing layer, the drainage tube and the first tube section are inserted into the bag cover and sealed by the sealing layer.
6. The sustainable negative pressure drainage device according to claim 1, characterized in that: A check valve is provided at the end of the drainage tube inserted into the first drainage bag to prevent liquid from flowing back.
7. The sustainable negative pressure drainage device according to claim 1, characterized in that: A buffer pad is provided at the free end of the drainage tube. The buffer pad is provided with a fluid channel corresponding to the drainage tube. The buffer pad is used to reduce the damage of the drainage tube to the human body.
8. The sustainable negative pressure drainage device according to claim 7, characterized in that: The buffer pad includes a soft rubber buffer cap and a limiting column. The soft rubber buffer cap is a hemispherical structure. The soft rubber buffer cap has an arc surface and a groove. The arc surface is arranged opposite to the groove. One end of the limiting column is connected to the groove, and the other end is inserted into the drainage tube.
9. The sustainable negative pressure drainage device according to claim 1, characterized in that: One end of the first drainage bag where the second regulating valve is provided is provided with a connecting tube, and the second drainage bag is correspondingly provided with a joint, which is connected to the interior of the second drainage bag, and the first drainage bag and the second drainage bag are connected to the joint through the connecting tube.