Negative pressure sealing drainage device

Abstract

The utility model discloses a vacuum sealing drainage device which comprises a wound surface, one side of the wound surface is fixedly connected with a second suction tube and a first connecting tube, the circumferential outer wall of the second suction tube and the circumferential outer wall of the first connecting tube are provided with a first one-way valve and a second one-way valve respectively, and one end of the first connecting tube is fixedly connected with a threaded cylinder. A fixing tube is in threaded connection with the interior of the threaded cylinder, a second connecting tube is integrally formed at the other end of the fixing tube, a first suction tube is arranged at one end of the second suction tube, and the first suction tube is connected with the second suction tube through an inserting part. According to the negative pressure sealing drainage device, the interior of the wound surface can be kept in a negative pressure state for a period of time after the wound surface is separated from a negative pressure source, the using effect is improved, a large number of impurities can be prevented from being accumulated in the wound surface, the dustproof effect of the negative pressure sealing drainage device is improved, and the using stability of the negative pressure sealing drainage device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage, in particular to a negative pressure closed drainage device. Background Art

[0002] After a burn or trauma, conventional dressing changes are time-consuming and labor-intensive, and are prone to serious infection and other problems during the dressing process. Negative pressure closed drainage technology connects a drainage tube to the dressing to drain tissue fluid and other fluids leaking from the wound and the wound surface, thereby speeding up the recovery of the wound and the wound surface.

[0003] Traditional wound repair uses a negative pressure device, which will keep the wound in a negative pressure state when in use to promote healing. Once the negative pressure source is separated, there will be no negative pressure on the wound, and it will not play a corresponding role, and thus the negative pressure state of the wound cannot be maintained. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a negative pressure closed drainage device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A negative pressure closed drainage device comprises a wound surface, a second suction tube and a first connecting tube are fixedly connected to one side of the wound surface, a first one-way valve and a second one-way valve are respectively provided on the circumferential outer walls of the second suction tube and the first connecting tube, one end of the first connecting tube is fixedly connected to a threaded barrel, a fixed tube is threadedly connected to the inner thread of the threaded barrel, the other end of the fixed tube is integrally formed with the second connecting tube, one end of the second suction tube is provided with the first suction tube, and the first suction tube is connected to the second suction tube through a plug-in component.

[0007] As a further solution of the utility model, the plug-in component is a conical cannula, which is integrally formed at one end of the first suction tube close to the second suction tube, and the conical cannula is inserted into the second suction tube. A limiting component for locking the first suction tube is provided on the outer side of the second suction tube.

[0008] As a further solution of the utility model, the limiting assembly includes a fixing sleeve, which is fixedly connected to the circumferential outer wall of the second suction tube, and one side of the fixing sleeve is integrally formed with a plurality of elastic sheets, and the circumferential outer wall of the first suction tube is fixedly connected with a fixing ring, one side of the fixing ring is provided with a plurality of through grooves, and the elastic sheets pass through the through grooves, and one end of the plurality of elastic sheets passing through the through grooves are integrally formed with a protrusion, so that the protrusion resists the fixing ring.

[0009] As a further solution of the utility model, a first groove is formed in the threaded barrel, a filter element is inserted in the first groove, a second groove is formed at one end of the fixed tube, and the filter element is inserted into the second groove.

[0010] As a further solution of the present invention, the filter element is an ultrafiltration membrane.

[0011] As a further solution of the utility model, both the first suction tube and the second suction tube are polyvinyl chloride tubes.

[0012] As a further solution of the utility model, the first connecting tube, the second connecting tube and the fixed tube are all sterile pipes.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the setting of the first one-way valve, the first one-way valve on the second suction tube can only flow out but not in. When the negative pressure device is used, the first suction tube and the second suction tube are used to make the wound surface into a negative pressure state. After the negative pressure device is detached, the gas cannot enter the wound surface through the first suction tube and the second suction tube under the action of the first one-way valve. Therefore, the wound surface can maintain a negative pressure state for a period of time after being detached from the negative pressure source, thereby improving the use effect.

[0015] 2. Through the setting of the filter element, when the inside of the wound is cleaned through the second connecting tube and the first connecting tube, the filter element can filter the flushing liquid, thereby preventing impurities in the flushing liquid from entering the inside of the wound, preventing a large amount of impurities from accumulating inside the wound, and improving the dust-proof effect of the negative pressure closed drainage device.

[0016] 3. By setting the limiting component, after the first suction tube is inserted into the second suction tube through the conical cannula, the first suction tube can be limited by the limiting component to prevent the first suction tube from being separated from the second suction tube, thereby improving the stability of the use of the negative pressure sealing drainage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a negative pressure closed drainage device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the enlarged structure of part A of a negative pressure sealing drainage device proposed by the utility model;

[0019] Figure 3 This is a schematic cross-sectional structure diagram of a second suction tube of a negative pressure closed drainage device proposed by the utility model;

[0020] Figure 4 This is a schematic cross-sectional structure diagram of a first connecting pipe of a negative pressure closed drainage device proposed by the utility model;

[0021] Figure 5 The utility model provides a schematic diagram of the enlarged structure of the filter membrane of the negative pressure closed drainage device.

[0022] In the figure: 1. first suction tube; 2. fixing ring; 3. fixing sleeve; 4. second suction tube; 5. first one-way valve; 6. wound surface; 7. first connecting tube; 8. threaded tube; 9. second connecting tube; 10. elastic sheet; 11. through groove; 12. conical cannula; 13. fixing tube; 14. first groove; 15. second groove; 16. filter element; 17. second one-way valve. DETAILED DESCRIPTION

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, so that the embodiments of the application described here, based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0024] Reference Figure 1-Figure 5 A negative pressure closed drainage device comprises a wound surface 6, a second suction tube 4 and a first connecting tube 7 are bonded to one side of the wound surface 6, a first one-way valve 5 and a second one-way valve 17 are respectively provided on the circumferential outer walls of the second suction tube 4 and the first connecting tube 7, a threaded tube 8 is bonded to one end of the first connecting tube 7, a fixed tube 13 is connected to the inner thread of the threaded tube 8, a second connecting tube 9 is integrally formed at the other end of the fixed tube 13, a first suction tube 1 is provided at one end of the second suction tube 4, the first suction tube 1 is connected to the second suction tube 4 through a plug-in component, the plug-in component is a conical plug-in 12, and the conical plug-in 12 is integrally formed at the first suction tube 1 near the second suction tube 4, the conical cannula 12 is inserted into the second suction tube 4, and a first one-way valve 5 is arranged on the second suction tube 4. The first one-way valve 5 makes the second suction tube 4 only go out but not go in. The first suction tube 1 is inserted into the second suction tube 4 through the conical cannula 12, and the negative pressure device is connected to the first suction tube 1, so that the negative pressure device makes the inside of the wound surface 6 into a negative pressure state through the first suction tube 1 and the second suction tube 4. After the negative pressure device is separated, under the action of the first one-way valve 5, the gas cannot enter the wound surface 6 through the first suction tube 1 and the second suction tube 4, so the wound surface 6 can maintain a negative pressure state for a period of time after being separated from the negative pressure source.

[0025] In the utility model, in order to ensure a stable connection between the first suction tube 1 and the second suction tube 4, a limiting component for locking the first suction tube 1 is provided on the outer side of the second suction tube 4, and the limiting component includes a fixing sleeve 3, the fixing sleeve 3 is bonded to the circumferential outer wall of the second suction tube 4, and a plurality of elastic sheets 10 are integrally formed on one side of the fixing sleeve 3, a fixing ring 2 is bonded to the circumferential outer wall of the first suction tube 1, and a plurality of through grooves 11 are provided on one side of the fixing ring 2, and the elastic sheets 10 pass through the through grooves 11, and a plurality of elastic sheets 10 are integrally formed with protrusions at one end passing through the through grooves 11, so that the protrusions resist the fixing ring 2, and when the first suction tube 1 and the second suction tube 4 are connected, the elastic sheets 10 on the fixing sleeve 3 pass through the through grooves 11 on the fixing ring 2, so that the protrusions on the elastic sheets 10 are The fixing ring 2 is used for resisting and limiting, so that the first suction tube 1 can be stably inserted into the second suction tube 4. A first groove 14 is provided in the threaded tube 8, and a filter element 16 is inserted in the first groove 14. A second groove 15 is provided at one end of the fixed tube 13, and the filter element 16 is inserted in the second groove 15. The filter element 16 is an ultrafiltration membrane. When the inside of the wound surface 6 is cleaned through the second connecting tube 9 and the first connecting tube 7, the filter element 16 located in the fixed tube 13 will filter the cleaning liquid to prevent impurities in the flushing liquid from entering the inside of the wound surface 6, and prevent a large amount of impurities from accumulating inside the wound surface 6, thereby improving the dustproof effect of the negative pressure closed drainage device. The first suction tube 1 and the second suction tube 4 are both polyvinyl chloride tubes, and the first connecting tube 7, the second connecting tube 9 and the fixed tube 13 are all sterile pipes.

[0026] Working principle: when it is needed, a first one-way valve 5 is set on the second suction tube 4, and the first one-way valve 5 makes the second suction tube 4 only go out but not go in. The first suction tube 1 is inserted into the second suction tube 4 through the conical cannula 12, and the elastic sheet 10 on the fixing sleeve 3 passes through the through groove 11 on the fixing ring 2, so that the protrusion on the elastic sheet 10 resists and limits the fixing ring 2, so that the first suction tube 1 is stably inserted into the second suction tube 4. At this time, the negative pressure device is connected to the first suction tube 1, so that the negative pressure device makes the inside of the wound surface 6 become a negative pressure state through the first suction tube 1 and the second suction tube 4. After the negative pressure device is detached, under the action of the first one-way valve 5 Gas cannot enter the wound surface 6 through the first suction tube 1 and the second suction tube 4, so the wound surface 6 can maintain a negative pressure state for a period of time after being separated from the negative pressure source, thereby improving the use effect. When the inside of the wound surface 6 is cleaned through the second connecting tube 9 and the first connecting tube 7, the filter element 16 located in the fixed tube 13 will filter the cleaning liquid to prevent impurities in the flushing liquid from entering the inside of the wound surface 6, prevent a large amount of impurities from accumulating inside the wound surface 6, and improve the dust-proof effect of the negative pressure closed drainage device. At the same time, since the second one-way valve 17 on the first connecting tube 7 can only enter but not exit, the cleaning liquid cannot flow back through the first connecting tube 7 and the second connecting tube 9.

[0027] The present invention has been described through the above-mentioned embodiments. Those skilled in the art will appreciate that the present invention is not limited to the above-mentioned embodiments, and more modifications may be made according to the teachings of the present invention. These modifications are all within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A negative pressure sealing drainage device, comprising a wound surface (6), characterized in that: A second suction tube (4) and a first connecting tube (7) are fixedly connected to one side of the wound surface (6); a first one-way valve (5) and a second one-way valve (17) are respectively provided on the circumferential outer walls of the second suction tube (4) and the first connecting tube (7); one end of the first connecting tube (7) is fixedly connected to a threaded barrel (8); a fixed tube (13) is internally threadedly connected to the threaded barrel (8); a second connecting tube (9) is integrally formed at the other end of the fixed tube (13); a first suction tube (1) is provided at one end of the second suction tube (4); and the first suction tube (1) is connected to the second suction tube (4) via a plug-in component.

2. A negative pressure sealing drainage device according to claim 1, characterized in that: The plug-in component is a conical insert tube (12), which is integrally formed at one end of the first suction tube (1) close to the second suction tube (4), and the conical insert tube (12) is inserted into the second suction tube (4). A limiting component for locking the first suction tube (1) is provided on the outer side of the second suction tube (4).

3. A negative pressure sealing drainage device according to claim 2, characterized in that: The limiting component comprises a fixing sleeve (3), the fixing sleeve (3) being fixedly connected to the circumferential outer wall of the second suction tube (4), a plurality of elastic sheets (10) being integrally formed on one side of the fixing sleeve (3), a fixing ring (2) being fixedly connected to the circumferential outer wall of the first suction tube (1), a plurality of through grooves (11) being provided on one side of the fixing ring (2), and the elastic sheets (10) passing through the through grooves (11), and a protrusion being integrally formed on one end of the plurality of elastic sheets (10) passing through the through grooves (11), so that the protrusion resists the fixing ring (2).

4. A negative pressure sealing drainage device according to claim 1, characterized in that: The threaded barrel (8) is provided with a first groove (14), a filter element (16) is inserted into the first groove (14), and one end of the fixed tube (13) is provided with a second groove (15), and the filter element (16) is inserted into the second groove (15).

5. A negative pressure sealing drainage device according to claim 4, characterized in that: The filter element (16) is an ultrafiltration membrane.

6. A negative pressure sealing drainage device according to claim 1, characterized in that: The first suction tube (1) and the second suction tube (4) are both polyvinyl chloride tubes.

7. The negative pressure sealing drainage device according to claim 1, characterized in that: The first connecting tube (7), the second connecting tube (9) and the fixing tube (13) are all sterile tubes.

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