CN215537047U - Combined negative pressure drainage system - Google Patents
Combined negative pressure drainage system Download PDFInfo
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- CN215537047U CN215537047U CN202121890380.2U CN202121890380U CN215537047U CN 215537047 U CN215537047 U CN 215537047U CN 202121890380 U CN202121890380 U CN 202121890380U CN 215537047 U CN215537047 U CN 215537047U
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- sponge layer
- negative pressure
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- drainage
- dressing
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Abstract
The utility model provides a combined negative pressure drainage system which comprises a dressing, a drainage tube and a negative pressure device, wherein one end of the drainage tube is connected with the dressing, the other end of the drainage tube is connected with the negative pressure device, the dressing sequentially comprises a hydrophilic sponge layer and a hydrophobic sponge layer from one side close to the skin to the side far away from the skin, and the drainage tube is connected with the hydrophobic sponge layer. The utility model has the advantages and positive effects that: owing to adopt double-deck dressing, under the prerequisite of guaranteeing drainage effect, can effectually cause secondary damage to the wound when preventing to change the dressing, hydrophobic nature sponge layer and hydrophilic sponge layer link to each other through the mode of joint groove joint, can improve the area of contact of two kinds of sponges, further improve drainage effect, and production and equipment processes have still been simplified to the connected mode of two kinds of sponge joints, have simple structure, advantage that production efficiency is high.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a combined negative pressure drainage system.
Background
The negative pressure closed drainage technology (VSD for short) is mainly applied to a plurality of departments such as general surgery department, burn department, orthopedics department and the like in hospitals, and the typical components of the negative pressure closed drainage technology comprise: the VSD technology can reduce the frequency of dressing change of the wound surface, avoid cross infection, reduce the workload of medical staff, reduce the pain of patients and reduce the fatality and disability rate.
The porous sponge dressing is a main component for realizing the VSD technology, and mainly comprises hydrophilic sponge and hydrophobic sponge, wherein the two types of sponge have respective advantages, the hydrophilic sponge is mainly formed by foaming polyvinyl alcohol, the pore diameter of the sponge is relatively small, and due to the hydrophilic characteristic of the hydrophilic sponge, a layer of water molecule film can be formed on the surface of the sponge, so that the sponge is separated from endothelial cells of granulation tissues to be in direct contact, the new granulation tissues are not easy to grow into the sponge, but the permeability is low, and the negative pressure conduction is not uniform; most of the hydrophobic sponges are formed by polyurethane foaming, the pore size of the sponges is relatively large, the permeability is high, the negative pressure conductivity is excellent, but the newly-born granulation tissues grow into the sponges easily, and the secondary damage to the wounds is easily caused in the sponge replacing process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a combined negative pressure drainage system which is simple in structure, convenient and fast to operate and good in drainage effect.
The technical scheme of the utility model is as follows:
the utility model provides a modular negative pressure drainage system, includes dressing, drainage tube and negative pressure device, the one end of drainage tube links to each other with the dressing, and the other end of drainage tube links to each other with negative pressure device, the dressing is being close to skin one side and is including hydrophilicity sponge layer and hydrophobicity sponge layer in proper order to keeping away from skin one side direction, one side that the hydrophobicity sponge layer is close to hydrophilicity sponge layer is equipped with the joint groove, hydrophilicity sponge layer inlays in the joint inslot, the drainage tube links to each other with hydrophobicity sponge layer.
The dressing in the combined negative pressure drainage system is arranged in a double-layer mode, the layer close to the skin is the hydrophilic sponge layer, the hydrophilic sponge layer is directly contacted with the wound and directly attracts exudate of the wound, and the hydrophilic sponge made of polyvinyl alcohol can effectively prevent granulation of the wound from growing into the sponge, so that secondary damage to the wound is avoided when the dressing is replaced. According to the utility model, the hydrophobic sponge layer is arranged on the side, away from the skin, of the hydrophilic sponge layer, the good permeability and negative pressure conductivity of the hydrophobic sponge layer are utilized to improve the flow guiding performance of the dressing, and the exudate absorbed by the hydrophilic sponge layer can be guided into the drainage tube in time, so that the wound healing is promoted.
The hydrophobic sponge layer guides the exudate in the hydrophilic sponge layer to the drainage tube, so that the contact area between the hydrophobic sponge layer and the hydrophilic sponge layer can be effectively improved, the hydrophilic sponge layer is embedded in the clamping groove, the hydrophobic sponge layer and the hydrophilic sponge layer can be in contact with each other on the groove side wall except for the groove bottom surface contact in the clamping groove, and the contact area between the hydrophobic sponge layer and the hydrophilic sponge layer is effectively improved. In addition, the hydrophilic sponge layer and the hydrophobic sponge layer are connected in a clamping manner, so that the sponge has the advantages of simple structure and convenience in production and assembly.
Specifically, the cross section of the clamping groove is in an inverted trapezoid shape.
Specifically, the cross section of the clamping groove is step-shaped.
The joint groove sets up the cell body structure of the little belly of mouth, can be with stable inlaying in the joint inslot of hydrophilicity sponge layer, prevents that hydrophilicity sponge layer from deviating from the joint inslot.
The clamping groove can also be arranged into a reverse round table shape and other structures with the opening area smaller than the area of the bottom surface of the groove.
The hydrophobicity sponge layer has certain elasticity, and in-process with hydrophilic sponge installation to joint groove can expand the opening in joint groove, then inlay the hydrophilicity sponge layer to the joint inslot, removes the open-ended expansion of hydrophobicity sponge layer again.
The shape of the hydrophilic sponge layer can be matched with that of the clamping groove, and one side of the hydrophilic sponge layer, which is close to the skin, and one side of the hydrophobic sponge layer, which is close to the skin, are flush. The hydrophilicity sponge layer can also be provided with a bulge matched with the clamping groove at one side close to the hydrophobicity sponge layer for being connected with the hydrophobicity sponge layer, and the main body of the hydrophilicity sponge layer protrudes out of the clamping groove for trimming out the shape matched with the depression of the wound so as to provide larger wound contact area.
In another alternative of the utility model, the hydrophobic sponge layer and the hydrophilic sponge layer can be connected by gluing or sewing.
The hydrophilic sponge layer is formed by foaming polyvinyl alcohol, and the hydrophobic sponge layer is formed by foaming polyurethane.
The end of the drainage tube is embedded in the hydrophobic sponge layer, the combined negative pressure drainage system is provided with at least 2 flushing tubes, and the flushing tubes are uniformly distributed in the hydrophobic sponge layer and/or the hydrophilic sponge layer.
In order to clean the wound surface, the dressing or administer the drug to the wound surface, a flushing pipe is usually arranged in the dressing, in the utility model, the flushing pipe can be independently arranged in the hydrophobic sponge layer or the hydrophilic sponge layer, or the flushing pipe can be arranged in both the two sponge layers.
Any one of the flushing pipes is arranged in the inner cavity of the drainage pipe.
When the flushing pipe is arranged in the hydrophobic sponge layer, the flushing pipe can be arranged on the hydrophobic sponge layer outside the drainage pipe, and one flushing pipe can also be arranged in the drainage pipe. When the flushing pipe is arranged in the drainage pipe, the flushing pipe can play a role in clearing blockage when the drainage pipe is blocked.
The drainage tube is close to the tip on hydrophobicity sponge layer and is equipped with the fixed plate of laminating in hydrophobicity sponge layer surface, and the tip of drainage tube runs through the fixed plate and links to each other with hydrophobicity sponge layer, one side that the fixed plate is close to the hydrophobicity sponge layer is equipped with spacing arch.
When exudate in the sponge is sucked out of the sponge by the negative pressure of the drainage tube, the sponge shrinks and deforms after dehydration, and the deformed sponge easily blocks the inlet of the drainage tube.
And the wall of the drainage tube is provided with drainage holes.
And the pipe wall of the flushing pipe is provided with a flushing hole.
The utility model has the advantages and positive effects that: owing to adopt double-deck dressing, under the prerequisite of guaranteeing drainage effect, can effectually prevent that the granulation from growing into the dressing, and then cause secondary damage to the wound when reducing the change dressing, hydrophobic nature sponge layer links to each other with hydrophilic sponge layer through the mode of joint groove joint, can improve the area of contact of two kinds of sponges, further improves drainage effect, and production and equipment process have still been simplified to the connected mode of two kinds of sponge joints, have simple structure, advantage that production efficiency is high.
Drawings
FIG. 1 is a schematic structural view of example 1.
FIG. 2 is a schematic view of the distribution of the drainage tube and the irrigation tube of example 1.
Fig. 3 is a schematic structural view of a hydrophilic sponge layer.
Fig. 4 is a schematic mechanism diagram of embodiment 2.
Fig. 5 is a schematic structural view of the hydrophilic sponge layer of example 2.
FIG. 6 is a schematic illustration of the irrigation tube within the drainage tube of example 3.
FIG. 7 is a schematic structural view of example 4.
Fig. 8 is a schematic structural view of the fixing plate.
In the figure: 1. the device comprises a hydrophilic sponge layer, 2, a hydrophobic sponge layer, 3, a drainage tube, 4, a flushing tube, 5, a fixing plate, 21, a clamping groove, 31, drainage holes, 41, flushing holes, 51 and limiting bulges.
Detailed Description
Example 1:
as shown in the figures 1-3 of the drawings,
the utility model provides a modular negative pressure drainage system, includes dressing, drainage tube 3 and negative pressure device, the one end of drainage tube 3 links to each other with the dressing, and the other end of drainage tube 3 links to each other with negative pressure device, the dressing is being close to skin one side and is including hydrophilicity sponge layer 1 and hydrophobicity sponge layer 2 in proper order to keeping away from skin one side orientation, hydrophilicity sponge layer 1 is formed by the polyvinyl alcohol foaming, hydrophobicity sponge layer 2 is formed by the polyurethane foaming, drainage tube 3 links to each other with hydrophobicity sponge layer 2.
One side of the hydrophobic sponge layer 2 close to the hydrophilic sponge layer 1 is provided with a clamping groove 21, and the hydrophilic sponge layer 1 is embedded in the clamping groove 21.
The section of the clamping groove 21 is in an inverted trapezoid shape.
The end part of the drainage tube 3 is embedded in the hydrophobic sponge layer 2, the combined negative pressure drainage system is provided with a flushing tube 4, and one end of the flushing tube 4 is embedded in the hydrophilic sponge layer 1.
And a drainage hole 31 is formed in the wall of the drainage tube 3.
The wall of the flushing pipe 4 is provided with a flushing hole 41.
Example 2:
as shown in figures 4 and 5 of the drawings,
the utility model provides a modular negative pressure drainage system, includes dressing, drainage tube 3 and negative pressure device, the one end of drainage tube 3 links to each other with the dressing, and the other end of drainage tube 3 links to each other with negative pressure device, the dressing is being close to skin one side and is including hydrophilicity sponge layer 1 and hydrophobicity sponge layer 2 in proper order to keeping away from skin one side orientation, hydrophilicity sponge layer 1 is formed by the polyvinyl alcohol foaming, hydrophobicity sponge layer 2 is formed by the polyurethane foaming, drainage tube 3 links to each other with hydrophobicity sponge layer 2.
One side of the hydrophobic sponge layer 2 close to the hydrophilic sponge layer 1 is provided with a clamping groove 21, and the hydrophilic sponge layer 1 is embedded in the clamping groove 21.
The section of the clamping groove 21 is step-shaped.
The end part of the drainage tube 3 is embedded in the hydrophobic sponge layer 2, the combined negative pressure drainage system is provided with a flushing tube 4, and one end of the flushing tube 4 is embedded in the hydrophilic sponge layer 1.
And a drainage hole 31 is formed in the wall of the drainage tube 3.
The wall of the flushing pipe 4 is provided with a flushing hole 41
Example 3:
as shown in figure 6 of the drawings,
the utility model provides a modular negative pressure drainage system, includes dressing, drainage tube 3 and negative pressure device, the one end of drainage tube 3 links to each other with the dressing, and the other end of drainage tube 3 links to each other with negative pressure device, the dressing is being close to skin one side and is including hydrophilicity sponge layer 1 and hydrophobicity sponge layer 2 in proper order to keeping away from skin one side orientation, hydrophilicity sponge layer 1 is formed by the polyvinyl alcohol foaming, hydrophobicity sponge layer 2 is formed by the polyurethane foaming, drainage tube 3 links to each other with hydrophobicity sponge layer 2.
One side of the hydrophobic sponge layer 2 close to the hydrophilic sponge layer 1 is provided with a clamping groove 21, and the hydrophilic sponge layer 1 is embedded in the clamping groove 21.
The section of the clamping groove 21 is in an inverted trapezoid shape.
The end part of the drainage tube 3 is embedded in the hydrophobic sponge layer 2, the combined negative pressure drainage system is provided with a flushing tube 4, and one end of the flushing tube 4 is arranged in the drainage tube 3 in the hydrophobic sponge layer 2.
And a drainage hole 31 is formed in the wall of the drainage tube 3.
The wall of the flushing pipe 4 is provided with a flushing hole 41.
Example 4:
as shown in figures 7 and 8 of the drawings,
the utility model provides a modular negative pressure drainage system, includes dressing, drainage tube 3 and negative pressure device, the one end of drainage tube 3 links to each other with the dressing, and the other end of drainage tube 3 links to each other with negative pressure device, the dressing is being close to skin one side and is including hydrophilicity sponge layer 1 and hydrophobicity sponge layer 2 in proper order to keeping away from skin one side orientation, hydrophilicity sponge layer 1 is formed by the polyvinyl alcohol foaming, hydrophobicity sponge layer 2 is formed by the polyurethane foaming, drainage tube 3 links to each other with hydrophobicity sponge layer 2.
One side of the hydrophobic sponge layer 2 close to the hydrophilic sponge layer 1 is provided with a clamping groove 21, and the hydrophilic sponge layer 1 is embedded in the clamping groove 21.
The section of the clamping groove 21 is step-shaped.
The end part of the drainage tube 3 close to the hydrophobic sponge layer 2 is provided with a fixing plate 5 attached to the outer surface of the hydrophobic sponge layer 2, the end part of the drainage tube 3 penetrates through the fixing plate 5 to be connected with the hydrophobic sponge layer 2, and one side of the fixing plate 5 close to the hydrophobic sponge layer 2 is provided with a limiting bulge 51.
One end of the flushing pipe 4 is embedded in the hydrophobic sponge layer 2.
And a drainage hole 31 is formed in the wall of the drainage tube 3.
The wall of the flushing pipe 4 is provided with a flushing hole 41.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a modular negative pressure drainage system, includes dressing, drainage tube and negative pressure device, the one end of drainage tube links to each other with the dressing, and the other end of drainage tube links to each other its characterized in that with negative pressure device: the dressing comprises a hydrophilic sponge layer and a hydrophobic sponge layer in sequence from one side close to the skin to the side far away from the skin, a clamping groove is formed in one side, close to the hydrophilic sponge layer, of the hydrophobic sponge layer, the hydrophilic sponge layer is embedded in the clamping groove, and the drainage tube is connected with the hydrophobic sponge layer.
2. The combined negative pressure drainage system of claim 1, wherein: the drainage tube is close to the tip on hydrophobicity sponge layer and is equipped with the fixed plate of laminating in hydrophobicity sponge layer surface, and the tip of drainage tube runs through the fixed plate and links to each other with hydrophobicity sponge layer, one side that the fixed plate is close to the hydrophobicity sponge layer is equipped with spacing arch.
3. The combined negative pressure drainage system of claim 1, wherein: the cross-section of the clamping groove is in an inverted trapezoid shape.
4. The combined negative pressure drainage system of claim 1, wherein: the section of the clamping groove is step-shaped.
5. The combined negative pressure drainage system of claim 1, wherein: the end of the drainage tube is embedded in the hydrophobic sponge layer, the combined negative pressure drainage system is provided with at least 2 flushing tubes, and the flushing tubes are uniformly distributed in the hydrophobic sponge layer and/or the hydrophilic sponge layer.
6. The combined negative pressure drainage system of claim 5, wherein: any one of the flushing pipes is arranged in the inner cavity of the drainage pipe.
7. The combined negative pressure drainage system of claim 1, wherein: the hydrophilic sponge layer is made of polyvinyl alcohol, and the hydrophobic sponge layer is made of polyurethane through foaming.
8. The combined negative pressure drainage system of any of claims 1-6, wherein: and the wall of the drainage tube is provided with drainage holes.
9. The combined negative pressure drainage system of any one of claims 5 or 6, wherein: and the pipe wall of the flushing pipe is provided with a flushing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121890380.2U CN215537047U (en) | 2021-08-13 | 2021-08-13 | Combined negative pressure drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121890380.2U CN215537047U (en) | 2021-08-13 | 2021-08-13 | Combined negative pressure drainage system |
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| Publication Number | Publication Date |
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| CN215537047U true CN215537047U (en) | 2022-01-18 |
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| CN202121890380.2U Active CN215537047U (en) | 2021-08-13 | 2021-08-13 | Combined negative pressure drainage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115105625A (en) * | 2022-06-22 | 2022-09-27 | 广州华一生物科技有限公司 | Disposable negative pressure drainage wound-protecting combined material and preparation method and application thereof |
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2021
- 2021-08-13 CN CN202121890380.2U patent/CN215537047U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115105625A (en) * | 2022-06-22 | 2022-09-27 | 广州华一生物科技有限公司 | Disposable negative pressure drainage wound-protecting combined material and preparation method and application thereof |
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