CN104225768A - Multilayer negative-pressure closed drainage wound protecting device - Google Patents
Multilayer negative-pressure closed drainage wound protecting device Download PDFInfo
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- CN104225768A CN104225768A CN201410268824.7A CN201410268824A CN104225768A CN 104225768 A CN104225768 A CN 104225768A CN 201410268824 A CN201410268824 A CN 201410268824A CN 104225768 A CN104225768 A CN 104225768A
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Abstract
The invention provides a multilayer negative-pressure closed drainage wound protecting device which comprises a porous foam cushion, a drainage tube and an oxygen-containing liquid flushing tube. One end of the drainage tube is positioned in the porous foam cushion, the porous foam cushion is a multilayer composite foam cushion and comprises a negative pressure conducting layer and a drainage protecting layer, the negative pressure conducting layer is a hydrophobic porous foam material layer, the drainage protecting layer is a hydrophilic porous foam material layer, and the drainage tube is disposed in the negative pressure conducting layer; the oxygen-containing flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube penetrates the porous foam material layer to be positioned on the lower surface of the drainage protecting layer, the tail end of the drainage tube goes deeply into the drainage protecting layer for positioning, and small holes are distributed in the wall of the drainage tube. The drainage tube and a leading-in end of the oxygen-containing liquid flushing tube are fixed by a shared elastic sealing glue film floppy which comprises a disc and an elastic sealing glue film bonded with the disc and extending outwards, and a drainage leading-in tube orifice of the drainage tube and a flushing leading-in tube orifice of the oxygen-containing liquid flushing tube are arranged in the middle of the disc. A longitudinal breaking joint is formed at a drainage tube incoming end of the porous foam cushion, so that convenience is brought to overturning of the leading-in tube orifice.
Description
Technical field
The present invention relates to medical trauma therapeutic device field, specifically, refer to that a kind of multilamellar negative-pressure sealed drainage protects wound device.
Background technology
Negative-pressure sealed drainage technology (vacuum sealing drainage is called for short VSD) is that German ULM university Wim doctor Fleischman initiated in 1992, and forms theoretical blank, for the drain of limb wounds; Within 1994, negative-pressure sealed drainage technology is applied to department of general surgery by Chinese professor Qiu Huade first, start the beginning that negative-pressure sealed drainage technology is applied in department of general surgery, Wang Yanfeng, Qiu Huade professor in authorized patent CN2236350 on March 17th, 1997, is first patent of negative-pressure sealed drainage technology in China.
Existing VSD technology basic configuration comprises negative pressure source (comprise medical suction machine, central negative pressure device that hospital uses or negative pressure drainage vessel etc.), drainage tube, hydrophilic foam or other medical hydrophobic foam or sponge kind dressing or gauze class dressing (below perforated foams being referred to as to above-mentioned medical material), Pasting sealing film, drainage container composition.Connect negative pressure source drain, the liquefied materials such as the fragment of tissue of the oozing of blood in tissue, sepage, liquefaction and necrosis and pus can be drained in drainage container.Slough and toxin, pus etc. can directly excrete by above-mentioned technology, avoid toxin heavily to absorb, rapid cleaning wound surface; Meanwhile, high negative pressure attracts can effectively promote granulation ramp, shortens wound healing time.Use this technology, patient can not need to change dressings in 3-7 days, avoids cross infection, reduces medical personnel's workload, decrease patient suffering, reduce the fatality rate of wound, disability rate.
VSD technology mainly relies on this medical high polymer dressing of porous foam cushion to realize.This dressing is negative pressure transmitting medium, is also by the drainage medium of slough, pus, sepage, other material such as toxic product and toxin introducing drainage tube simultaneously.Foam dressing in the market for negative-pressure sealed drainage is mainly divided into two kinds: hydrophobicity dressing and hydrophilic dressing.Hydrophobicity dressing mostly is PU foaming materials and forms, and foam pores is comparatively large, and Penetration ration is higher; Due to the characteristic that it is hydrophobic, generally can not be moisture in foam, therefore negative pressure conductive performance is splendid.Hydrophilic dressing mostly is PVA foaming materials and forms, and foam pores is less than hydrophobicity dressing, and material Penetration ration is lower, but also can meet the needs of negative pressure drainage treatment; Due to the characteristic that it is hydrophilic, dressing surface can form one deck water molecule film, and granulation tissue can be stoped to grow in dressing, and avoid tractive hemorrhage, material safety is high.
But above-mentioned two kinds of dressing equal existing defects in clinical practice.Hydrophobicity dressing (PU) is due to its hydrophobic characteristic, and material surface does not have protective layer, and granulation tissue can be grown in foam pores, tractive very easily occurs hemorrhage; Also because hydrophobicity dressing (PU) stretching resistance is poor, easily produce chip and come off, then cause wound surface to create foreign body inflammatory reaction (rejection) and the secondary infection in chamber, therefore there is larger problem in material safety.U.S. FDA report display, uses PU dressing, and patient exists the dead situation with increasing the weight of wound.Use PU dressing to change dressings the cycle short (U.S. FDA report and pertinent literature display can not more than three days), cost is high, and the labor intensity of medical personnel is large, and patient is also more painful.Hydrophilic dressing (PVA) is due to its water-wet behavior, material itself is moistening, although its Penetration ration is also lower, also can meet the treatment requirement of negative pressure drainage, but due to material moisture, therefore its negative pressure conductive performance is poor, easily produce negative pressure when large area wound surface uses and conduct weak district, secondly easily slowly become dry gradually after the dehydration of PVA material, cause Penetration ration to decline further, weaken therapeutic effect.
Summary of the invention
Technical problem to be solved by this invention designs a kind of multilamellar negative-pressure sealed drainage exactly and protects wound device, the defect that existing negative-pressure sealed drainage protects traumatic material can be overcome, while guarantee material safety, effectively can improve its negative pressure conductive performance, in use not easily block, permeability is stablized, and can have again the water-wet behavior of hydrophilic dressing (PVA), utilize material itself to be wettability, improve therapeutic effect.
Technical scheme of the present invention: a kind of multilamellar negative-pressure sealed drainage of the present invention protects wound device and comprises the drainage tube that porous foam cushion one end is positioned at porous foam cushion, described porous foam cushion is MULTILAYER COMPOSITE airfoam cushion, at least comprise negative pressure conducting shell and drain protective layer, negative pressure conducting shell is hydrophobic porous sponge layer, drain protective layer is hydrophilic porous sponge layer, and drainage tube is placed in negative pressure conducting shell; Described negative pressure conductive layer thickness is 0.5 ~ 10cm, and pore diameter is 1 ~ 2.5mm, and described drain protective layer thickness is 0.1 ~ 3.5cm, and pore diameter is 0.2 ~ 1mm.
Described multilamellar negative-pressure sealed drainage protects wound device and also includes oxygenated fluid syringe pipe; oxygenated fluid syringe pipe and drainage tube enter porous foam cushion side by side; drainage tube is positioned at drain protective layer lower surface through porous foam cushion; its tail end is deep into drain protective layer location, and the tube wall being positioned at the part of drain protective layer lower surface is furnished with aperture.
The leading-in end of described drainage tube is fixed by elastic packing glued membrane floppy disk, elastic packing glued membrane floppy disk 2 comprise disk and with the elastic packing glued membrane to extension that disk bonds together, have in the middle part of disk drainage tube drain introduce the mouth of pipe.
The leading-in end of described oxygenated fluid syringe pipe is fixed by elastic packing glued membrane floppy disk, elastic packing glued membrane floppy disk comprise disk and with the elastic packing glued membrane to extension that disk bonds together, have in the middle part of disk oxygenated fluid syringe pipe flushing introduce the mouth of pipe.
The leading-in end of described drainage tube and oxygenated fluid syringe pipe is fixed by the elastic packing glued membrane floppy disk shared, elastic packing glued membrane floppy disk comprise disk and with the elastic packing glued membrane to extension that disk bonds together, the mouth of pipe is introduced in the flushing having the drain of drainage tube to introduce the mouth of pipe and oxygen liquid syringe pipe in the middle part of disk.
Longitudinal breaking joint is had at the drainage tube upstream end of porous foam cushion, longitudinal breaking joint is positioned at the position by installing drainage tube, the number of longitudinal breaking joint is identical with drainage tube number, and the length of longitudinal breaking joint is extremely passed the position of negative-pressure drainage tube pore installation by porous foam cushion end face.
Described negative pressure conducting shell is the PU froth bed of hydrophobic PU foam, eva foam or recombination chitosan; Described drain protective layer is the PVA froth bed of PVA foam, the PVA foam of recombination chitosan or composite antibacterial, antibacterial medicament.
Preferably, described negative pressure conductive layer thickness is 1 ~ 3cm, and pore diameter is 1 ~ 1.5mm; Described drain protective layer thickness is 0.3 ~ 0.5cm, and pore diameter is 0.2 ~ 0.5mm.
The present invention have following a little: 1., combine both advantages of PU and PVA material, the transparent performance that PU material is good and negative pressure conductive performance is utilized while remaining the good hydrophilicity of PVA material, thus the limitation of the traditional homogenous material avoided, the combination of bi-material greatly improves the performance that negative-pressure sealed drainage protects traumatic material, effectively raises the effect of VSD treatment; 2., turnover design, the performance of bi-material can be brought into play greatly, different materials can be selected as drain face for different wound surface and indication, better to play material property, wound healing faster; 3., thoroughly solve the leakage problem of drainage tube injection part, ensured the stable of negative pressure, greatly reduce the probability that " gas leakage " occurs VSD system, ensure that the success rate that VSD treats; 4., independently rinse-system, can not produce " retrograde infection ", can more large-area flushing wound surface and drainage tube, prevent material and blocked drainage tube, facilitate drain, shorten operating time, reduce patient painful.
Can two-sided use be carried out while guarantee material safety, for the feature of different wound surface type in conjunction with bi-material, carry out upset targetedly and use.Effectively can improve its negative pressure conductive performance, and simple to operate in use procedure, good seal, and material not easily blocks, permeability is stablized, and therapeutic effect is excellent.
Accompanying drawing explanation
Fig. 1 is that multilamellar negative-pressure sealed drainage of the present invention protects wound apparatus structure schematic diagram.
Fig. 2 is that multilamellar negative-pressure sealed drainage of the present invention protects wound device top view.
Fig. 3 is elastic packing glued membrane floppy disk schematic diagram of the present invention.
Fig. 4 is porous foam cushion and longitudinal breaking joint schematic diagram.
Fig. 5 is that the present invention overturns front schematic diagram.
Fig. 6 is that the present invention overturns rear schematic diagram.
Detailed description of the invention
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not form limitation of the invention, only for example.Simultaneously by illustrating, advantage of the present invention will become clearly and easy understand.
As shown in Figure 1, Figure 2: multilamellar negative-pressure sealed drainage of the present invention protects wound device and comprises porous foam cushion 1, one end is positioned at the drainage tube 3 of porous foam cushion 1, described porous foam cushion 1 is MULTILAYER COMPOSITE airfoam cushion, at least comprise negative pressure conducting shell 1a and drain protective layer 1b, negative pressure conducting shell 1a is hydrophobic porous sponge layer, drain protective layer 1b is hydrophilic porous sponge layer, and drainage tube 3 is placed in negative pressure conducting shell 1a; Described negative pressure conducting shell 1a thickness is 0.5 ~ 10cm, and pore diameter is 1 ~ 2.5mm, and described drain protective layer 1b thickness is 0.1 ~ 3.5cm, and pore diameter is 0.2 ~ 1mm.
Described multilamellar negative-pressure sealed drainage protects wound device and also includes oxygenated fluid syringe pipe 4; oxygenated fluid syringe pipe 4 and drainage tube 3 enter porous foam cushion 1 side by side; drainage tube 3 is positioned at drain protective layer 1b lower surface through porous foam cushion 1; its tail end is deep into drain protective layer 1b and locates, and the tube wall being positioned at the part of drain protective layer 1b lower surface is furnished with aperture.
Fig. 3 is elastic packing glued membrane floppy disk schematic diagram of the present invention: described drainage tube 3 and the leading-in end of oxygenated fluid syringe pipe 4 are fixed by the elastic packing glued membrane floppy disk 2 shared, elastic packing glued membrane floppy disk 2 comprise disk 2a and with the elastic packing glued membrane 2b to extension that disk 2a bonds together, mouth of pipe 4a is introduced in the flushing having the drain of drainage tube 3 to introduce mouth of pipe 3a and oxygen liquid syringe pipe 4 in the middle part of disk 2a.Disk 2a has reinforcement 2a1.
Fig. 4 is porous foam cushion and longitudinal breaking joint schematic diagram:
Longitudinal breaking joint 1c is had at drainage tube 3 upstream end of porous foam cushion 1, longitudinal breaking joint 1c is positioned at the position by installing drainage tube, the number of longitudinal breaking joint 1c is identical with drainage tube 3 number, and the length of longitudinal breaking joint 1c is extremely passed the position of negative-pressure drainage tube pore installation by porous foam cushion 1 end face.
Described negative pressure conducting shell 1a is the PU froth bed of hydrophobic PU foam, eva foam or recombination chitosan; Described drain protective layer 1b is the PVA froth bed of PVA foam, the PVA foam of recombination chitosan or composite antibacterial, antibacterial medicament.
Preferably, described negative pressure conducting shell 1a thickness is 1 ~ 3cm, and pore diameter is 1 ~ 1.5mm; Described drain protective layer 1b thickness is 0.3 ~ 0.5cm, and pore diameter is 0.2 ~ 0.5mm.
Drain is introduced mouth of pipe 3a and is rinsed the mouth diameters introducing mouth of pipe 4a and is less than corresponding drainage tube 3 and the external diameter of oxygenated fluid syringe pipe 4, ensures sealing.
Describedly can the two-layer compound airfoam cushion of two-sided use be composited by PU and PVA bi-material, after PVA and PU compound, Thickness Ratio is 1:0.5-1:3
Described drain is introduced mouth of pipe 3a and rinsed the introducing mouth of pipe 4a angle stretched out between elastic sealant membrane body is 15 ~ 90 °.
Described drainage tube be 1 or many evenly distributed, during many arrangements, the spacing of adjacent two is 2-5cm, and when drainage tube is many, many tail ends connect multiple-pass joints.
Described syringe pipe be 1 or many evenly distributed, many arrangement time, be 1-5cm with adjacent drainage tube spacing.
During installation, drainage tube 3 and oxygenated fluid syringe pipe 4 are penetrated by the inner side of longitudinal breaking joint respectively.
Consult Fig. 5: for overturning front product schematic diagram, hydrophobic PU is upper.
The present embodiment is that the negative-pressure sealed drainage of the two-layer compound airfoam cushion of two-sided use protects wound device, be provided with the elastic packing glued membrane floppy disk 2 that for piping stretch out sealing identical with drainage tube quantity, coordinate longitudinal breaking joint drainage tube 3 and oxygenated fluid syringe pipe 4 can be turned to the other side of composite foam cushion, as shown in Figure 6, hydrophobic PU under, to be suitable for some having the needs of a large amount of transudate at the wound surface of short time rapid drain, wound surface environment can be improved rapidly, wound healing.As burn wound and skin grafted wounds.
Core of the present invention adopts porous foam cushion, every employing negative pressure conducting shell is hydrophobic porous sponge layer, and drain protective layer is hydrophilic porous sponge layer, all belongs to protection scope of the present invention.
Claims (8)
1. a multilamellar negative-pressure sealed drainage protects wound device, comprise porous foam cushion (1), one end is positioned at the drainage tube (3) of porous foam cushion (1), it is characterized in that: described porous foam cushion (1) is MULTILAYER COMPOSITE airfoam cushion, at least comprise negative pressure conducting shell (1a) and drain protective layer (1b), negative pressure conducting shell (1a) is hydrophobic porous sponge layer, drain protective layer (1b) is hydrophilic porous sponge layer, and drainage tube (3) is placed in negative pressure conducting shell (1a); Described negative pressure conducting shell (1a) thickness is 0.5 ~ 10cm, and pore diameter is 1 ~ 2.5mm, and described drain protective layer (1b) thickness is 0.1 ~ 3.5cm, and pore diameter is 0.2 ~ 1mm.
2. multilamellar negative-pressure sealed drainage according to claim 1 protects wound device; it is characterized in that: described multilamellar negative-pressure sealed drainage protects wound device and also includes oxygenated fluid syringe pipe (4); oxygenated fluid syringe pipe (4) and drainage tube (3) enter porous foam cushion (1) side by side; drainage tube (3) is positioned at drain protective layer (1b) lower surface through porous foam cushion (1); its tail end is deep into drain protective layer (1b) location, and the tube wall being positioned at the part of drain protective layer (1b) lower surface is furnished with aperture.
3. multilamellar negative-pressure sealed drainage according to claim 1 protects wound device, it is characterized in that: the leading-in end of drainage tube (3) is fixed by elastic packing glued membrane floppy disk (2), the elastic packing glued membrane (2b) to extension that elastic packing glued membrane floppy disk (2) comprises disk (2a) and bonds together with disk (2a), has the drain of drainage tube (3) to introduce the mouth of pipe (3a) at disk (2a) middle part.
4. multilamellar negative-pressure sealed drainage according to claim 2 protects wound device, it is characterized in that: the leading-in end of oxygenated fluid syringe pipe (4) is fixed by elastic packing glued membrane floppy disk (2), the elastic packing glued membrane (2b) to extension that elastic packing glued membrane floppy disk (2) comprises disk (2a) and bonds together with disk (2a), has the flushing of oxygenated fluid syringe pipe (4) to introduce the mouth of pipe (4a) at disk (2a) middle part.
5. the multilamellar negative-pressure sealed drainage according to claim 3 or 4 protects wound device, it is characterized in that: the leading-in end of drainage tube (3) and oxygenated fluid syringe pipe (4) is fixed by the elastic packing glued membrane floppy disk (2) shared, the elastic packing glued membrane (2b) to extension that elastic packing glued membrane floppy disk (2) comprises disk (2a) and bonds together with disk (2a), the mouth of pipe (4a) is introduced in the flushing having the drain of drainage tube (3) to introduce the mouth of pipe (3a) and oxygen liquid syringe pipe (4) at disk (2a) middle part.
6. the multilamellar negative-pressure sealed drainage according to claim 3 or 4 protects wound device, it is characterized in that: have longitudinal breaking joint (1c) at drainage tube (3) upstream end of porous foam cushion (1), longitudinal breaking joint (1c) is positioned at the position by installing drainage tube, the number of longitudinal breaking joint (1c) is identical with drainage tube (3) number, and the length of longitudinal breaking joint (1c) is extremely passed the position of negative-pressure drainage tube pore installation by porous foam cushion (1) end face.
7. multilamellar negative-pressure sealed drainage according to claim 1 and 2 protects wound device, it is characterized in that: the PU froth bed that described negative pressure conducting shell (1a) is hydrophobic PU foam, eva foam or recombination chitosan; The PVA froth bed of the PVA foam that described drain protective layer (1b) is PVA foam, recombination chitosan or composite antibacterial, antibacterial medicament.
8. the multi-layered foamed dressing for negative-pressure sealed drainage according to claim 1 and 2, is characterized in that: described negative pressure conducting shell (1a) thickness is 1 ~ 3cm, and pore diameter is 1 ~ 1.5mm; Described drain protective layer (1b) thickness is 0.3 ~ 0.5cm, and pore diameter is 0.2 ~ 0.5mm.
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| CN201410268824.7A CN104225768B (en) | 2014-06-16 | 2014-06-16 | A kind of multilamellar negative-pressure sealed drainage protects wound device |
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Cited By (7)
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| CN105250077A (en) * | 2015-11-03 | 2016-01-20 | 中国人民解放军第四军医大学 | Dressing device for infected dehiscent incisional wound after heart bypass surgery |
| CN105250078A (en) * | 2015-11-03 | 2016-01-20 | 中国人民解放军第四军医大学 | Dressing device for wound infection disruption and merged intestinal leakage of abdominal operation |
| CN105250076A (en) * | 2015-11-03 | 2016-01-20 | 中国人民解放军第四军医大学 | Dressing device for bile leakage of abdominal incision infection split and merging |
| CN105944221A (en) * | 2016-06-15 | 2016-09-21 | 武汉维斯第医用科技股份有限公司 | Negative pressure sealing drainage system for deep cavity wound surface operation nursing |
| CN110393632A (en) * | 2019-07-17 | 2019-11-01 | 稳健医疗用品股份有限公司 | A kind of water repellency dressing and preparation method thereof |
| CN112773927A (en) * | 2020-12-24 | 2021-05-11 | 江苏申思生物科技有限公司 | Efficient and environment-friendly PVA/PU multilayer foam dressing manufacturing method |
| 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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| WO2017215418A1 (en) * | 2016-06-15 | 2017-12-21 | 武汉维斯第医用科技股份有限公司 | Negative pressure sealed drainage system for deep cavity wound surgical treatment |
| CN110393632A (en) * | 2019-07-17 | 2019-11-01 | 稳健医疗用品股份有限公司 | A kind of water repellency dressing and preparation method thereof |
| CN112773927A (en) * | 2020-12-24 | 2021-05-11 | 江苏申思生物科技有限公司 | Efficient and environment-friendly PVA/PU multilayer foam dressing manufacturing method |
| 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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| C06 | Publication | ||
| PB01 | Publication | ||
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