CN101664578B - Negative pressure sealing drainage device of surface wound tissue - Google Patents
Negative pressure sealing drainage device of surface wound tissue Download PDFInfo
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- CN101664578B CN101664578B CN200910272187XA CN200910272187A CN101664578B CN 101664578 B CN101664578 B CN 101664578B CN 200910272187X A CN200910272187X A CN 200910272187XA CN 200910272187 A CN200910272187 A CN 200910272187A CN 101664578 B CN101664578 B CN 101664578B
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Abstract
A negative pressure sealing drainage device of a surface wound tissue comprises a porous foam cushion (1) which contacts with the surface wound, a drainage tube (2) with a side port, a sealing film (3), a connector (4), a catheter (17), a drainage container (5), a negative pressure source (6), an adhesive film (7) and an eduction tube (8), The adhesive film (7) is located above the porous foam cushion (1); the opening direction of the side port on the drainage tube (2) contacts with the porous foam cushion (1); the eduction tube (8) is communicated with the drainage tube (2) and located above the adhesive film (7); the sealing film (3) is sealed on the adhesive film (7); the eduction tube (8) is pumped into the drainage container (5) through the catheter (17); and the drainage container (5) is connected with the negative pressure source (6) through the catheter (17). The device leads the porous foam cushion to be capable of prolonging the time of maintaining flexibility and moist environment, is beneficial to wound healing, and has the advantages of convenient and reliable sealing and drainage.
Description
Technical field
The present invention relates to negative pressure sealing drainage device of surface wound tissue.It is to aim at various body surface organizations ulceration district treatment and design a kind of is used for the device to reason wound, burn, infection, compressing, endocrine disturbance, vascular occlusion, radio exposure, operation, postoperative complication, worm Serpentis sting and bite, former resulting wound surface such as freezing wound carries out the negative-pressure sealed drainage treatment.
Background technology
Negative-pressure sealed drainage technology (vacuum sealing drainage/VSD is called for short the VSD technology) is that German ULM Wim doctor Fleischman of university initiated in 1992, and forms theoretical blank, is used for the drain of extremity wound surface; Chinese professor Qiu Huade was applied to department of general surgery with the VSD technology first in 1994; Started the beginning that the VSD technology is used in department of general surgery; The patent CN 2276350 that Wang Yanfeng, Qiu Huade professor obtain authorizing on March 18th, 1998 in China is first patent of VSD technology.From then on, the VSD technology has obtained bigger development in China.
Existing VSD technology basic configuration comprises negative pressure source (comprising central negative pressure device or negative pressure drainage vessel that medical attractor, hospital use); Drainage tube, breathable films (hereinafter to be referred as sealing film), joint (comprising two pass joints, three way cock or multiple-pass joint), the drainage container of polyvinyl alcohol foam or other medical porous foam, sponge or gauze (hereinafter to be referred as the porous foam cushion), Pasting sealing usefulness are formed.Its version is: the drainage tube of an end band side opening (is generally two pipes of parallel placement; The porous foam cushion of small dimension is a pipe; Big slightly specification; Three of general parallel placements pipe or more than) feed in the hole-drilled porous foam cushion, when using polylith porous foam cushion, through three way cock, two pass joints or multiple-pass joint the port of export of drainage tube is merged into an outlet again; Connect the negative pressure source drain, with liquefied material drains such as the fragment of tissue of the oozing of blood in the tissue, sepage, liquefaction and necrosis and puss to drainage container.
In the practical application; The porous foam cushion is wrapped up many side openings drainage tube, be placed on the wound surface or the wound intracavity, the reuse sealing film is with porous foam cushion and the tight sealing of the drainage tube port of export; Make it to be hedged off from the outer world; Connect drainage container, connect negative pressure source (existing also have the negative pressure drainage vessel that drainage container and negative pressure source are made of one) again, just formed an efficient drainage system (VSD system).In this system, negative pressure is delivered to the porous foam cushion through the rigidity of drainage tube, and can negative pressure be distributed in each point on the porous foam cushion along with the trend of drainage tube.Because the bubble of the hole in the porous foam cushion interconnects and high resilience, negative pressure can arrive the every bit in target drain district, forms an omnibearing drain.Block derivated bigger, that quality is not too hard can be cut apart with plastotype under suction function becomes graininess, gets into drainage tube through the hole of porous foam cushion or the hole bubble that connects each other, is sucked rapidly in the drainage container again; The bulk derivated that possibly stop up drainage tube is then stopped by the porous foam cushion, can only when removing or change drain, leave body with the porous foam cushion attached to porous foam cushion surface.The sealing of sealing film is maintained the negative pressure as drain power, also makes by the drain district simultaneously to be hedged off from the outer world, and has prevented pollution and cross infection effectively.Because negative pressure is through being uniformly distributed in by the surface in drain district as mesomeric soft porous foam cushion; Complication (" negative-pressure sealed drainage technology " the 2nd edition P3-P4, Qiu Huade Song Jiuhong chief editor publishes the People's Health Publisher) such as the ischemia that contingent internal organs or tissue are caused by sucking-off or pressurized in the time of can preventing single drainage tube negative pressure drainage effectively, necrosis, perforation.
Compare with existing common dressing change; The VSD technology can will be removed by exudate in the drain district and slough at the right time; Can be reached " nil product is gathered " state in the drain district, wound surface can obtain clean environment soon, reduces the heavily absorption of body contratoxin greatly; Even there is bigger lacuna to exist, lacuna also quickens to dwindle because of the existence of negative pressure, and as far as shallow table wound surface, sealing film and porous foam cushion also make local environment more near physiological moisture state; The negative pressure that acts on the wound surface soft tissue stimulates, and helps the improvement of local microenvironment and disappearing of tissue edema, has quickened the new life of granulation tissue in the wound surface, shortens wound healing time; In 3-7 days of VSD treatment, all do not need to change dressings again, reduced medical personnel's workload, reduced the patient suffering, reduced the general practice expense.
In China VSD technology adaptable across fields such as traumatology department, orthopaedics, department of general surgery, Department of B urns.
1., sealing is inconvenient but still there is following problem in existing VSD technology in the use of surface wound drain:.Good sealing is the key that guarantees drainage effect; It also is where the shoe pinches in the operation of whole negative-pressure sealed drainage; Encapsulating method commonly used comprises: (" negative-pressure sealed drainage technology " the 2nd edition P20-P24 such as puncture method, " mesentery " method, sewing and " making dumplings " method; Qiu Huade Song Jiuhong chief editor, the People's Health Publisher publishes).But above-mentioned encapsulating method is all very loaded down with trivial details in the operation of reality, and operation and exercise that operative doctor all need carry out repeatedly could be grasped.And seal insecure, the most important reason of leaking gas often, thus cause the weakening even the failure of the VSD systematic treating effect that causes because of gas leakage.2., adopt of the outlet of the exit of drainage tube as negative pressure conduction and drain; The Way out of negative pressure conduction and drain is few, often has only the negative pressure conduction and the drain of vertical or horizontal single direction, and the inhomogeneous and plugging phenomenon of negative pressure conduction takes place easily; And when plugging took place, flushing was also inconvenient.Existing purging method commonly used is: 1, on wound surface, put a root rubber pipe in addition, but also need the extraction location with " mesentery method " caulking gum pipe, increased the probability of " gas leakage " and the difficulty of sealing; 2, from the retrograde flushing liquor that injects of former drainage tube, may the sepage that drain be refilled on the wound surface, cause " retrograde infection "; 3, puncture injects flushing liquor from the porous foam cushion, but need paste sealing film again at the broken hole position on the porous foam cushion, has increased the difficulty of operation.3., to the irregular wound surface of large tracts of land, drain is inconvenient.The exit of drainage tube connects through joint, could in the end the port of export of drainage tube be merged into an outlet through a large amount of joints, has formed a crisscross RF as " branch ", and patient's activity is very inconvenient.4., in clinical practice uses; Be with porous foam cushion and healthy skin integral sealing together with sealing film; Hair follicle in the healthy skin needs normal water-permeable and air permeable metabolism; Just require the penetrating rate of sealing film to be the bigger the better, otherwise phenomenons such as erythra, folliculitis, moisture dipping turn white can appear in healthy skin, cause the patient to have a mind to or the sealing film of by mistake scratching, rub because of malaise symptoms such as itch.Also possibly cause between skin and the sealing film because the moisture dipping, the sealing film viscosity diminishes is thrown off from skin surface, makes the air admission seal area finally cause the negative-pressure sealed drainage effect to descend then, even complete failure.And the porous foam cushion needs sealing fully; Require the penetrating rate of sealing film more little good more again; Otherwise will cause that the porous foam cushion is owing to causing loss of moist through long small circulation of air; The porous foam cushion is become dry, finally cause the porous foam cushion to follow the string and moist environment, delayed wound healing time; So this has just formed the contradiction that in an integral body, has two retroaction demand principles.And existing sealing film can not satisfy simultaneously that healthy skin is permeable normally, ventilative, the requirement of metabolism and porous foam cushion needs tight seal.5. to than the large tracts of land wound surface; When needing the porous foam cushion more than two; Often the drainage tube of the band side opening in the cushion is extracted out, operative doctor cuts more side openings on drainage tube, extends the length of the drainage tube of band side opening; Splicing, serial or parallel connection porous foam cushion are operated extremely loaded down with trivial details then.
Therefore, existing VSD technology is improved in the use in the surface wound tissue healing become a very urgent important process.
Summary of the invention
The objective of the invention is to overcome the above-mentioned unreasonable part of existing negative pressure closed drainage device, and a kind of negative pressure sealing drainage device of surface wound tissue is provided.
The objective of the invention is to reach through following measure: negative pressure sealing drainage device of surface wound tissue, it comprises the porous foam cushion that contacts with surface wound, the drainage tube of band side opening; Sealing film, joint, conduit; Drainage container, negative pressure source is characterized in that it also comprises glued membrane and fairlead; Described glued membrane is positioned at the top of porous foam cushion, and the opening direction of drainage tube upper-side hole contacts with the porous foam cushion, and said fairlead communicates with drainage tube and is positioned at the top of glued membrane; Sealing film is sealed on the glued membrane, and fairlead feeds in the drainage container through conduit, and drainage container connects negative pressure source through conduit.
In technique scheme, said drainage tube is between porous foam cushion and glued membrane.
In technique scheme, said drainage tube or be circular, or be flat, and be positioned at the upper end of glued membrane, and be structure as a whole with glued membrane.
In technique scheme, on the conduit between said fairlead and the drainage container, be connected with effusion meter.
In technique scheme, said drainage tube and glued membrane are structure as a whole.
In technique scheme, in the said porous foam cushion pillar is arranged, an end of said pillar is positioned at the porous foam cushion, the other end of said pillar and/or be fixed on drainage tube and glued membrane on.
In technique scheme, on said conduit, be connected with pressure transducer, pressure transducer connects CPU, and described CPU is connected with negative pressure source.
In technique scheme, be coated with sealing film around the said glued membrane.
In technique scheme, said drainage tube is a pipe.
In technique scheme, said drainage tube is two to five pipes of parallel placement.
In technique scheme, said drainage tube is at least two cross-coupled integral structures.
In technique scheme, jagged on the said pillar.
In technique scheme, between said drainage container and negative pressure source, be connected with biofilter and adour filter.
In technique scheme, said drainage tube or be " well " font, or be " ten " font, or be " worker " font, or be " rice " font structure.
In technique scheme, said pillar is a hollow structure, and pillar communicates with drainage tube, and little perforate is arranged on the pillar.
In technique scheme, be connected with one to five fairlead on the said drainage tube, and fairlead and drainage tube are structure as a whole.
In technique scheme, the lower surface of said pillar is the globoidal structure of indent.
In technique scheme, on the said fairlead seal cover is arranged.
In technique scheme, sealable sample tap is arranged on the said fairlead.
Negative pressure sealing drainage device of surface wound tissue of the present invention has following advantage: 1., (air penetrability of this glued membrane is extremely low through being placed on glued membrane on the porous foam cushion; Also can be the extremely low film of air penetrability that other material is processed) seal wound surface; Prolong the time that the porous foam cushion keeps elasticity and moist environment greatly, helped wound healing.2., sealing film only need sealed Cellophane around get final product (also can with sealing film all cover on the glued membrane reach glued membrane around); And need not seal the exit of drainage tube, reduce the probability of VSD system generation " gas leakage ", make the sealing of negative-pressure sealed drainage become simple more, reliable; Sealing film is the very high film of transparent performance simultaneously; Also have good skin compatibility, the sensitization rate is low, helps the wound surface homergy of healthy skin on every side.3., can on every drainage tube, connect fairlead, therefore it is many to draw Way out, the outlet of every fairlead both can be used as draining hole, can be used as the rinse mouth when plugging takes place again, drain is all very convenient with flushing.Simultaneously, reserve fixed fairlead during operation and make flushing usefulness, also avoided the not only drain but also the possibility of retrograde infection takes place when washing of same fairlead.The side pipe that drainage tube is drawn also can be used as the passage that drain is taken a sample.4., go up drainage way, no matter be the conduction negative pressure, still drain, all more all even rationally, so be not easy to take place the plugging phenomenon, particularly when fairlead is positioned at the infall of drainage tube, all the more so than side drainage way.5., during to the irregular wound surface of large tracts of land, only need on fairlead, adopt multiple-pass joint can import drainage container, drain be very convenient, can not form the situation of " branch net " (shown in figure 14), makes things convenient for patient's activity normally.6.. shorten the time of operation, and alleviated patient's misery, shortened the time of patient's wound healing.
Description of drawings
Fig. 1 is the structural representation (sealing film does not wherein draw) of negative pressure sealing drainage device of surface wound tissue embodiment 1 of the present invention.
Fig. 2 is the location diagram (dotted portion among the figure is not visible part) of porous foam cushion, sealing film and glued membrane among the present invention.
Fig. 3 is a kind of position positionality sketch map of fairlead, drainage tube, glued membrane and pillar among the present invention.
Fig. 4 is a kind of position positionality sketch map of fairlead, drainage tube, glued membrane, pillar and porous foam cushion among the present invention.
Fig. 5 is the another kind of position positionality sketch map of fairlead, drainage tube, glued membrane, pillar and porous foam cushion among the present invention.
Fig. 6 is the structural representation of fairlead among the present invention and seal cover.
Fig. 7 is the structural representation of two parallel pipes among the present invention.
Fig. 8 is the structural representation of " ten " font drainage tube among the present invention.
Fig. 9 is the structural representation of " well " font drainage tube among the present invention.
Figure 10 is the structural representation of " worker " font drainage tube among the present invention.
Figure 11 is the structural representation of " rice " font drainage tube among the present invention.
Figure 12 is the structural representation (sealing film does not wherein draw) of negative pressure sealing drainage device of surface wound tissue embodiment 2 of the present invention.
Figure 13 is the annexation figure of middle filtrator of the present invention and drainage container and negative pressure source.
Figure 14 forms the structural representation of " branch net " for existing negative-pressure sealed drainage.
1. porous foam cushions among the figure, 2. drainage tube, 3. sealing film, 4. joint, 5. drainage container, 6. negative pressure source; 7. glued membrane, 8. fairlead, 9. pillar, 10. burr, 11. seal covers; 12. fluting, 13. little perforates, the cambered surface of 14. indents, 15. sample taps, 16. effusion meters; 17. conduit, 18. biofilters, 19. adour filters, 20. pressure transducers, 21.CPU.
The specific embodiment
Specify performance of the present invention below in conjunction with accompanying drawing, but they do not constitute to qualification of the present invention, only do for example.Through explanation, advantage of the present invention will become clear more and easy and understand simultaneously.
Consulting accompanying drawing can know: negative pressure sealing drainage device of surface wound tissue of the present invention, and it comprises the porous foam cushion 1 that contacts with surface wound, the drainage tube 2 of band side opening; Sealing film 3, joint 4, drainage container 5; Negative pressure source 6, it also comprises glued membrane 7 and fairlead 8, described glued membrane 7 is positioned at the top of porous foam cushion 1; The opening direction of drainage tube 2 upper-side holes contacts with porous foam cushion 1, and said fairlead 8 communicates with drainage tube 2 and is positioned at the top of glued membrane 7, and sealing film 3 is sealed on the glued membrane 7; Fairlead 8 feeds in the drainage container 5, and drainage container 5 connects negative pressure source 6.
Adopt this drainage way of going up that drain is extended in all direction; No matter be the conduction negative pressure; Still drain, all more all even rationally than side drainage way (former drainage system is in the exit drain or the conduction negative pressure of drainage tube), therefore be not easy to take place the plugging phenomenon; Particularly when fairlead is positioned at the infall of drainage tube, (like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4) all the more so.Drainage tube 2 between porous foam cushion 1 and glued membrane 7 (as shown in Figure 4), drainage tube 2 and glued membrane 7 be structure as a whole (also can not having annexation between drainage tube and the glued membrane).This structure can slot 12 on the porous foam cushion, drainage tube is placed in the groove of porous foam cushion.
Pillar 9 is arranged in the porous foam cushion 1, and an end of said pillar 9 is positioned at porous foam cushion 1, the other end of said pillar 9 and/or be fixed on drainage tube 2 and the glued membrane 7; Jagged 10 (like Fig. 2, Fig. 3, shown in Figure 4) on the pillar 9.This structure has following advantage; First: the effect that pillar makes the porous foam cushion between body surface organization's wound surface and sealing film, stand up and support; Make the hole in the porous foam cushion all keep normal condition or less distortion only takes place with the hole bubble that connects each other; Make the liquefied materials such as fragment of tissue and pus of oozing of blood in body surface organization's wound surface, sepage, liquefaction and necrosis can be smoothly through hole and the hole bubble drain that connects each other to drainage tube, reduced because the drain plugging causes the possibility of drain failure.Second: the elastic construction that the supporting role of pillar makes the porous foam cushion keep vacuum environment keeps normal condition; Reduced because action of negative pressure makes the porous foam cushion contact closely with surface wound formation; The part that porous foam cushion and surface wound cell are grown forms the probability of unnecessary adhesion; Help the growth of body surface organization's wound surface granulation, reduced the time of body surface organization's wound healing.Burr can be fixing as a whole with riveted between drainage tube, pillar, glued membrane and the porous foam cushion simultaneously, and pillar is difficult for from the porous foam cushion, transfering to.
Around glued membrane 7, be coated with sealing film 3.This pad pasting mode only needs pad pasting around glued membrane, and is very simple, and this mode need not adopt " mesentery " method sealing drainage tube at the exit of drainage tube during the sealing pad pasting simultaneously, makes sealing convenient.
Be connected with 1-5 fairlead 8 on the drainage tube 2, and fairlead 8 is structure as a whole with drainage tube 2.
On the conduit 17 between fairlead 8 and the drainage container 5, be connected with effusion meter 16 (shown in figure 12).Effusion meter has following effect, and first: the active hemorrhage of monitoring wound surface, to avoid hypovolemic shock.Second: monitor losing of a large amount of body fluid, the hypoproteinemia of avoiding a large amount of PDs to cause.The the 3rd: for fluid infusion, additional colloid provide the data support.The 4th: with write down the body fluid amount lost with band scale drainage bottle and compare, effusion meter has more the effect of the amount lost of record body fluid in the unit interval, for clinical emergency treatment provides instant accurately data support.
Be connected with biofilter 18 and adour filter 19 between drainage container 5 and the negative pressure source 6.Biofilter can reduce antibacterial, and especially anaerobe gets into next step drainage channel, as getting into the central negative potential source, to avoid causing the probability of central negative pressure systemic contamination in the hospital.Adour filter can reduce the foul odour that produces on the wound surface and from native system, overflow (shown in figure 13).
Be connected with pressure transducer 20 on the conduit 22, pressure transducer 20 connects CPU21, and described CPU21 is connected with negative pressure source 6.Pressure transducer can be through the pressure that conducts in the porous foam cushion in the measuring guide; And pressure signal is passed through CPU handle; And control the open and close of negative pressure source through the order of CPU, or regulate the size of negative pressure source output negative pressure, negative pressure is again through the drain capacity; And conduct to the porous foam cushion, thereby regulate the pressure between porous foam cushion endoporus bubble and the hole through drainage tube.
During use, pillar is inserted in the porous foam cushion, glued membrane and drainage tube place on the porous foam cushion, with sealing with sealing film around the glued membrane, conduit are inserted in the fairlead on the glued membrane, connect drainage container and negative pressure source, can use.During use, can on fairlead, use the disposable connection of multiple-pass joint, if when four fairleads are arranged; Adopt a five-way joint; Can be disposable be connected to drainage container through conduit, or only use two fairleads to use as the drain outlet, other fairlead uses during as flushing.
The contrast situation of the clinical treatment case of clinical treatment case through adopting VSD device of the present invention and existing VSD device is explained the advantage of VSD device of the present invention below.
Wherein existing VSD device is the two parallel drainage tube that places in the porous foam cushion, adopts the sealing film sealing, connects drainage container through joint, conduit, inserts negative pressure source again.
VSD device of the present invention is meant: " intersecting parallels " drainage tube of flat places the upper end of glued membrane, and pillar is positioned at the lower end of glued membrane, and is jagged on the pillar; Pillar inserts in the porous big gun foam cushion, and fairlead is arranged on the drainage tube, and sample tap is arranged on the fairlead; Connect drainage container through conduit; Insert negative pressure source again, between drainage container and negative pressure source, biofilter and adour filter are arranged.Adopt multiple-pass joint, feed drainage container through connecting duct once, reserve a fairlead as rinse mouth.Around glued membrane, seal through sealed Cellophane.
Totally 180 examples such as soft tissue avulsion, open fracture and soft tissue defects etc., and the course of disease was in 3 months, and the sequencing that is pressed into hospitalize is divided into odd number group and even sets.Wherein odd number group 90 examples are with existing VSD device treatment (A group), and even sets 90 examples are a VSD observing time and treat the course of treatment, promptly 5-7 days time with VSD device treatment of the present invention (B group).In above-mentioned treatment course of treatment, compare each project of impression ratio occurring on seal operation time, plugging rate, porous foam cushion exsiccation rate, the wound surface in the above operation, in addition the time ratio of producing single product is more also listed in following form:
Table 1: the comparison sheet at clinical manipulation and postoperative effect of VSD device of the present invention and existing VSD device.
| Item compared is (with 450cm 2Be example) | Existing VSD device (A group) | VSD device of the present invention (B group) |
| The seal operation time in the operation | 10-20 minute | 3-5 minute |
| The plugging rate | More than 60% | Below 10% |
| Porous foam cushion exsiccation rate | More than 70% | Below 10% |
| The impression ratio appears on the wound surface | More than 50% | Below 10% |
| Produce the single product time | 3-4 minute | In 1 minute |
Item compared is: the area of wound surface is about 450cm
2Producing the single product time is meant for existing VSD device: drainage tube inserts the time in the porous foam cushion.Be meant for the purpose of the present invention: the time that incorporate glued membrane, drainage tube, fairlead and porous foam cushion are combined with each other.
Below be the clinical comparative analysis of the effect after surgery of VSD device of the present invention and existing VSD device:
In year JIUYUE in January, 2009 to 2009, the inventor contrasts existing VSD device and each 30 example of VSD device of the present invention treatment soft tissue defects concurrent infection.All cases all began to receive treatment more than two weeks after the wound, belonged to post-processed; The wound surface area is all at 100cm
2More than and reach the flesh layer deeply; All merge downright bad in a organized way.Two groups of cases have all been got rid of: face, hands, foot and perineal position wound surface person, and chronic soft tissue the infected merges osteomyelitis person, and the age surpasses 50 years old person, complication with diabetes person.Existing VSD device man 17 examples, women 13 examples, age 6-48 year, average 27.8 years old, average wound surface area 182.3cm
2VSD device of the present invention man 16 examples, women 14 examples, age 7-49 year, average 28.3 years old, average wound surface area 169.8cm
2. two groups of case whole body conditions are similar basically with wound surface, have comparability. and adopt the t check to take statistics to learn and handle.
Two groups of injured situation of case, injury and repair modes are seen table 2-1,2-2.List the wound surface cleaning time of two groups of cases among the table 2-3.The wound surface cleaning time refers to that the wound surface of soft tissue defects concurrent infection allows closed required time from begin treatment to wound surface situation.Wound surface cleaning, the closed standard of permission are: the smooth cleaning of wound surface, no slough and sepage; Edema wound disappears; The wound surface granulation tissue is fresh, the pinkiness graininess, and being prone to of touching is hemorrhage; Wound surface can guarantee secondary suture, skin-grafting or flap transposition success.Natural law with clinical discovery traumatic infection sign or debridement, removing slough to wound repairing (secondary suture, skin-grafting or flap transposition) proxima luce (prox. luc) on time calculates.
Table injured reason of 2-1 and complication
Table 2-2 wound site and repair mode
The time of table 2-3 wound surface cleaning distributes
| Time (my god) | ?0-～6 | ?7～13 | 14～20 | 21～27 | 28～34 | 35～41 | Add up to |
| Existing VSD group | ?8 | ?14 | 4 | 3 | 1 | 0 | 30 examples |
| VSD group of the present invention | ?13 | ?10 | 5 | 2 | 0 | 0 | 30 examples |
It is 5～15 days that existing VSD forms the face cleaning time, and wound surface has dwindling in various degree, 22 example skin-grafting, and 3 routine flap transpositions are repaired.Forming the face cleaning time through VSD of the present invention is 3～10 days, and more existing VSD group obviously shortens (P＜0.01, two group difference has extremely significantly meaning).It is little more obvious that VSD of the present invention forms reduction of area, 25 example skin-grafting, and 1 routine flap transposition is repaired.
Results of comparison confirms: the therapeutic effect of using the soft tissue defects of VSD apparatus processes concurrent infection of the present invention obviously is superior to existing VSD device.
Can know from table 1, table 2-1, table 2-2, table 2-3: VSD device of the present invention more at home, external existing product and various technical data and the documents relevant with this specialty; Operation convenience at clinical practice; Making much of and implementing principle; The scientific and reasonable arrangement of structure or the like aspect has all produced qualitative leap, and its advantage or good effect have exceeded the imagination of those skilled in the art.
Need to prove: to those of ordinary skill in the art, under the prerequisite that does not change the principle of the invention, can also make some changes or distortion to the present invention, this belongs to protection scope of the present invention equally.
Claims (19)
1. negative pressure sealing drainage device of surface wound tissue, it comprises the porous foam cushion (1) that contacts with surface wound, the drainage tube (2) of band side opening; Sealing film (3), joint (4), conduit (17); Drainage container (5), negative pressure source (6) is characterized in that it also comprises glued membrane (7) and fairlead (8); Described glued membrane (7) is positioned at the top of porous foam cushion (1); The opening direction of drainage tube (2) upper-side hole contacts with porous foam cushion (1), and said fairlead (8) communicates with drainage tube (2) and is positioned at the top of glued membrane (7), and sealing film (3) is sealed on the glued membrane (7); Fairlead (8) feeds in the drainage container (5) through conduit (17), and drainage container (5) connects negative pressure source (6) through conduit (17).
2. negative pressure sealing drainage device of surface wound tissue according to claim 1 is characterized in that said drainage tube (2) is positioned between porous foam cushion (1) and the glued membrane (7).
3. negative pressure sealing drainage device of surface wound tissue according to claim 1 is characterized in that said drainage tube (2) or is circle, or be flat, and be positioned at the upper end of glued membrane (7), and is structure as a whole with glued membrane (7).
4. negative pressure sealing drainage device of surface wound tissue according to claim 1 is characterized in that on the conduit (17) between said fairlead (8) and the drainage container (5), being connected with effusion meter (16).
5. negative pressure sealing drainage device of surface wound tissue according to claim 2 is characterized in that said drainage tube (2) and glued membrane (7) are structure as a whole.
6. negative pressure sealing drainage device of surface wound tissue according to claim 1 and 2; It is characterized in that pillar (9) is arranged in the said porous foam cushion (1); One end of said pillar (9) is positioned at porous foam cushion (1), and the other end of said pillar (9) is fixed on drainage tube (2) and/or the glued membrane (7).
7. negative pressure sealing drainage device of surface wound tissue according to claim 4 is characterized in that on said conduit (17), being connected with pressure transducer (20), and pressure transducer (20) connects CPU (21), and described CPU (21) is connected with said negative pressure source (6).
8. negative pressure sealing drainage device of surface wound tissue according to claim 6, it is characterized in that said glued membrane (7) around be coated with sealing film (3).
9. negative pressure sealing drainage device of surface wound tissue according to claim 6 is characterized in that said drainage tube (2) is a pipe.
10. negative pressure sealing drainage device of surface wound tissue according to claim 6 is characterized in that said drainage tube (2) is two to five pipes of parallel placement.
11. negative pressure sealing drainage device of surface wound tissue according to claim 6 is characterized in that said drainage tube (2) is at least two cross-coupled integral structures of pipe.
12. negative pressure sealing drainage device of surface wound tissue according to claim 6 is characterized in that said pillar (9) upward jagged (10).
13. negative pressure sealing drainage device of surface wound tissue according to claim 7 is characterized in that between said drainage container (5) and negative pressure source (6), being connected with biofilter (18) and adour filter (19).
14. negative pressure sealing drainage device of surface wound tissue according to claim 11 is characterized in that said drainage tube (2) or is " well " font, or be " ten " font, or be " worker " font, or is " rice " font structure.
15. negative pressure sealing drainage device of surface wound tissue according to claim 12 is characterized in that said pillar (9) is a hollow structure, pillar (9) communicates with drainage tube (2), and little perforate (13) is arranged on the pillar (9).
16. negative pressure sealing drainage device of surface wound tissue according to claim 14 is characterized in that being connected with one to five fairlead (8) on the said drainage tube (2), and fairlead (8) is structure as a whole with drainage tube (2).
17. negative pressure sealing drainage device of surface wound tissue according to claim 15, the lower surface that it is characterized in that said pillar (9) are cambered surface (14) structure of indent.
18. negative pressure sealing drainage device of surface wound tissue according to claim 16 is characterized in that seal cover (11) is arranged on the said fairlead (8).
19. negative pressure sealing drainage device of surface wound tissue according to claim 18 is characterized in that sealable sample tap (15) is arranged on the said fairlead (8).
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| CN101829388A (en) * | 2010-03-23 | 2010-09-15 | 武汉维斯第医用科技有限公司 | Negative pressure closed drainage device |
| CN101904768B (en) * | 2010-06-29 | 2012-10-31 | 武汉维斯第医用科技有限公司 | Vacuum sealing drainage system |
| CN102218189A (en) * | 2011-06-13 | 2011-10-19 | 朱新生 | Special-purposed flexible cushion for negative pressure treatment |
| CN104548221A (en) * | 2014-12-23 | 2015-04-29 | 李永杰 | Endocrine hydrops analysis drainage apparatus |
| CN111467666A (en) * | 2020-03-20 | 2020-07-31 | 西安交通大学第二附属医院 | Ultrasonic medicine feeding device |
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| CN201664462U (en) * | 2009-09-22 | 2010-12-08 | 宋九宏 | Negative-pressure enclosed drainage device for body surface wound tissues |
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