CN101829388A - Negative pressure closed drainage device - Google Patents

Abstract

The invention relates to a negative pressure closed drainage device, comprising a porous foam cushion (1), a drainage tube (2) with a side hole, a joint (4), a conduit (11), a drainage container (5) and a negative source (6). The drainage tube (2) is connected with the conduit (11) which is led into the drainage container (5), and the drainage container (5) is connected with the negative pressure source (6). One end of the drainage tube (2) is positioned in the porous foam cushion (1), and the other end of the drainage tube (2) is led out from the upper end of the porous foam cushion (1). The leading-out end of the drainage tube (2) is fixed with an adhesive film (7), and a sealing film (3) is sealed on the adhesive film (7). The invention overcomes the defects that the traditional negative pressure closed drainage device is inconvenient, a better carrier used as a support is not available when the sealing film is sealed, and a drainage device for a wound surface on the body surface is very inconvenient to use when carrying out negative pressure sealing drainage. The negative pressure closed drainage device for the wound surface tissue on the body surface has the advantages of suitability for the drainage of the wound surface on the body surface, suitability for the drainage in a body cavity and more convenient film sticking.

Description

Negative pressure closed drainage device

Technical field

The present invention relates to a kind of negative pressure closed drainage device.It is a kind of negative-pressure sealed drainage that is applicable to body surface organization or body cavity pathological changes and carries out.

Background technology

Negative-pressure sealed drainage technology (vacuum sealing drainage is called for short VSD) 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, Wang Yanfeng, Qiu Huade professor in authorized patent CN 2276350 on March 18th, 1998, is first patent of VSD technology in China.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 that medical attractor, hospital use or negative pressure drainage vessel etc.), drainage tube, compositions such as the breathable films (hereinafter to be referred as sealing film) of polyvinyl alcohol foam or other medical porous foam, sponge or gauze (hereinafter to be referred as the porous foam cushion), Pasting sealing usefulness, joint (comprising two pass joints, three way cock or multiple-pass joint), drainage container.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 pipes or more of general parallel placement) feed in the hole-drilled porous foam cushion, when using polylith porous foam cushion, by 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 tightly seals the porous foam cushion and 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, enters drainage tube through the hole of porous foam cushion or the hole bubble that connects mutually, is sucked rapidly in the drainage container again; The bulk derivated that may stop up drainage tube is then stopped by the porous foam cushion, can only leave human body with the porous foam cushion when removing or change drain 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, contingent internal organs or tissue is sucked out or pressurized and 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 causes, necrosis, perforation in the time of can preventing single drainage tube negative pressure drainage effectively.

Compare with existing common dressing change, the VSD technology can will be removed at the right time by exudate in the drain district and slough, make to be reached " nil product is poly-" state in the drain district, wound surface can obtain clean environment soon, greatly reduces the heavily absorption of body contratoxin; Even there is bigger lacuna to exist, lacuna also quickens to dwindle because of the existence of negative pressure, and for shallow table wound surface, sealing film and porous foam cushion also make the more approaching physiological moisture state of local environment; 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.

The VSD technology is widely used in China: fields such as traumatology department, orthopaedics, department of general surgery, Department of B urn.

Existing VSD technology is constantly improved it by inventor Mr. Song Jiuhong, the VSD technology is at surface wound drainage technology comparative maturity, but also still there is a lot of problems in the application in vivo of this technology: 1., sealing is inconvenient, during the sealing film sealing neither one preferably carrier as support.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 needs to carry out repeatedly could be grasped, and patient's misery is bigger.And sealing insecurely, the most important reason of leaking gas often causes the weakening even the failure of the VSD systematic treating effect that causes because of gas leakage easily.2., often need the on-the-spot splicing of doctor, there not be the industrial products of finalizing the design for endoceliac negative-pressure sealing drain.That is to say use when being applicable to the drawing assembling device and in body cavity, do the negative-pressure sealing drain of surface wound extremely inconvenient.

Therefore, existing VSD technology is improved, and made it be applicable to wound tissue healing in body surface organization or the body simultaneously, and make things convenient for pad pasting to become a very urgent important process.

Summary of the invention

The objective of the invention is to overcome the unreasonable part of above-mentioned existing negative pressure closed drainage device, and a kind of new negative pressure closed drainage device is provided, it is simple in structure, and is easy to use.

The objective of the invention is to reach by following measure: negative pressure closed drainage device, it comprises the porous foam cushion, the drainage tube of band side opening, joint, conduit, drainage container, negative pressure source, drainage tube connecting duct, conduit feed in the drainage container, and drainage container connects negative pressure source, an end that it is characterized in that described drainage tube is positioned at the porous foam cushion, the other end of drainage tube is drawn from the upper end of porous foam cushion, is fixed with glued membrane on the exit of drainage tube, and sealing film is sealed on the glued membrane.

In technique scheme, the angular range of the angle α between described glued membrane and the drainage tube is: 0 °＜α≤90 °.

In technique scheme, described joint is five-way joint or four-way connection, described five-way joint comprises two flow subs that are used for being connected with drainage tube, two transverse joints that are used for laterally connecting and the catheter adapter that is used for being connected with conduit, described four-way connection comprises two flow subs that are used for being connected with drainage tube, is used for two transverse joints that laterally connect.

In technique scheme, described conduit feeds in the drainage container by the three way cock.

In technique scheme, it also comprises syringe pipe, and an end of described syringe pipe is positioned at the porous foam cushion, and the other end of syringe pipe is drawn from the upper end of porous foam cushion, is fixed with glued membrane on the exit of syringe pipe, and sealing film is sealed on the glued membrane.

In technique scheme, be set with syringe pipe in the drainage tube.

In technique scheme, the syringe pipe placed side by side with drainage tube arranged, described syringe pipe is by guide hole and drainage tube conducting, and with the conducting of porous foam cushion.

In technique scheme, connect by transverse pipe between the described transverse joint.

In technique scheme, described conduit is by feeding in the drainage container with conduit input pipe connected vertically.

Negative pressure sealing drainage device of surface wound tissue of the present invention has following advantage: 1., both be applicable to the surface wound drain, be applicable to endoceliac drain again, with the different drainage system unification of two covers of existing surface wound drain and the drain of body cavity wound surface is a covering device, and operate simpler, use more conveniently, result of use is better.2., pad pasting is more convenient, no matter is at endoceliac wound surface or at surface wound, be pad pasting an effective support place (carrier) be provided.When wound surface uses in body cavity, only need sealing film is sealed in getting final product of glued membrane all around, and (glued membrane and drainage tube are structure as a whole not need to seal the exit of drainage tube, also glue film sleeve can be contained on the drainage tube), greatly reduce the probability of VSD system generation " gas leakage ", existing leak rate and be reduced to 5% by 60%.Operator's loaded down with trivial details property and puncture method are to the injury of patient's normal body tissue when (1), having avoided use " mesentery " method.(2), avoided when side is portalled drain compressing to normal surrounding tissue.(3), avoid as radical mastectomy, rectal cancer Miles art, vaginal tumor radical correction, osteomyelitis are windowed in the operations such as lavage and drainage art, perineal position explosive injury, the drainage tube pad pasting does not have support place and has to adopt to pasting the embarrassment of method during pad pasting.Need to be many people to cooperate simultaneously to the shortcoming of pasting method and to finish, and can not guarantee sealing effectiveness.(4), when surface wound uses, glued membrane is except that providing the pad pasting supporting surface, also can be by increasing the area of glued membrane, make glued membrane cover the porous foam cushion, avoid sealing film directly to be posted on the porous foam cushion, and produce because of the moisture content in the porous foam cushion volatilizees by sealing film, and make possibility of porous foam cushion hardening, the hardening of porous foam cushion will make negative-pressure sealed drainage fail.In a word, the use of the glued membrane that links together with drainage tube makes the sealing of negative-pressure sealed drainage become simple more, reliable, and the use amount of sealing film is also less simultaneously, has reduced cost, has reduced patient's financial burden.3., multiple-pass joint (is five-way joint in the accompanying drawing, also can adopt four-way connection) can on every drainage tube, connect fairlead, therefore the Way out of drawing is many, 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 and flushing are all very convenient.Simultaneously, can reserve fixed fairlead during operation and make flushing usefulness, also avoid the not only drain but also the possibility of retrograde infection takes place when washing of same fairlead.Transverse joint on the drainage tube also can be used as the passage (sample tap) that drain is taken a sample.4., having special-purpose syringe pipe to wash stops up, can not produce " retrograde infection ".There is special-purpose syringe pipe also can in time dilute, soak, soften drain in the porous foam cushion, more convenient drain.5., shortened the time of operation, and alleviated patient's misery, shortened the time of patient's wound healing.

Description of drawings

Fig. 1 is the location diagram of drainage tube, glued membrane, porous foam cushion and sealing film in the present invention.

Fig. 2 is a kind of structural representation that increases syringe pipe in Fig. 1.

Fig. 3 is drainage tube and syringe pipe structural representation placed side by side.

Fig. 4 is the structure cut-away view of Fig. 3.

Fig. 5 is the johning knot composition of joint (five-way joint) and drainage tube in the present invention.

Fig. 6 A is a kind of structural representation of four-way connection.

Fig. 6 B is the another kind of structural representation of four-way connection.

Fig. 7 is the structural representation that a plurality of joints are connected in series with drainage tube.

Fig. 8 is the structural representation of embodiments of theinvention 1.

Fig. 9 is embodiments of theinvention 2 structural representations.

Figure 10 is embodiments of theinvention 3 structural representations.

Figure 11 is drainage tube and the vertically arranged a kind of structure chart of glued membrane among the present invention.

Figure 12 is drainage tube and the vertically arranged another kind of structure chart of glued membrane among the present invention.

A kind of structure chart that Figure 13 arranges separately for syringe pipe among the present invention.

1. porous foam cushions, 2. drainage tube, 3. sealing film among the figure, 4. joint, 4-1. flow sub, 4-2. transverse joint, 4-3. catheter adapter, 4-4. three way cock, 5. drainage container, 6. negative pressure source, 7. glued membrane, 8. transverse pipe, 9. syringe pipe, 10. guide hole, 11. conduits, 12. input pipe, 13. seal covers.

The specific embodiment

Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not constitute limitation of the invention, only do for example.By explanation, advantage of the present invention will become clear more and understand easily simultaneously.

Consult accompanying drawing as can be known: negative pressure sealing drainage device of surface wound tissue of the present invention, compriseporous foam cushion 1, thedrainage tube 2 of band side opening,joint 4,conduit 11,drainage container 5,negative pressure source 6,drainage tube 2 connectingducts 11, conduit 11 feeds in thedrainage container 5, anddrainage container 5 connectsnegative pressure source 6, an end that it is characterized in that describeddrainage tube 2 is positioned atporous foam cushion 1, the other end ofdrainage tube 2 is drawn from the upper end ofporous foam cushion 1, is fixed with gluedmembrane 7 on the exit ofdrainage tube 2, and sealingfilm 3 is sealed on the glued membrane 7.Adopt an end ofdrainage tube 2 to be positioned atporous foam cushion 1, the version that the other end ofdrainage tube 2 is drawn from the upper end ofporous foam cushion 1 can be used by wound surface the present invention in body cavity, also can use at surface wound.Solved that wound surface uses the VSD technology in the body cavity, complex structure, shortcoming such as doctor's workload is big.Be fixed with gluedmembrane 7 on the exit of employingdrainage tube 2, sealingfilm 3 is sealed in the version on the gluedmembrane 7, make glued membrane become a support of pad pasting, it is very convenient that pad pasting becomes, if when (wound surface at fairlead place is less in the body cavity) wound surface uses the VSD technology in body cavity, also can reduce the use amount (as shown in Figure 2) of sealing film, if when surface wound uses, glued membrane is except that providing the pad pasting supporting surface, also can be by increasing the area of glued membrane, make the whole or most of porous foam cushions that cover of glued membrane, avoid sealing film directly all to be posted on the porous foam cushion, and produce because of the moisture content in the porous foam cushion volatilizees by sealing film, and make the possibility of porous foam cushion hardening, thereby keep stable negative-pressure sealed drainage (as shown in Figure 1).

Syringe pipe 9 is arranged in the drainage tube 2.This structure is a kind of set-up mode of syringe pipe, and " retrograde infection " (as shown in Figure 2) can not take place in convenient flushing plugging.

Thesyringe pipe 9 placed side by side withdrainage tube 2 arranged, andsyringe pipe 9 is byguide hole 10 anddrainage tube 2 conductings, and with 1 conducting of porous foam cushion.This structure is the another kind of set-up mode of syringe pipe, and convenient flushing plugging " retrograde infection " can not take place, and can not produce syringe pipe and take the spatial situation of drainage tube drain (as shown in Figure 3, Figure 4).

Syringe pipe 9 is arranged (as shown in figure 13) separately, this structure is the third set-up mode of syringe pipe, one end ofsyringe pipe 9 is positioned atporous foam cushion 1, the other end ofsyringe pipe 9 is drawn from the upper end ofporous foam cushion 1, be fixed with gluedmembrane 7 on the exit ofsyringe pipe 9, sealingfilm 3 is sealed on the gluedmembrane 7." retrograde infection " can not take place in the convenient flushing of this structure plugging, and the injection end ofsyringe pipe 9 hasseal cover 13, can open as required or close, as when plugging does not take place,seal cover 13 is closed, when if plugging takes place,seal cover 13 is opened, and inwardly injected normal saline.Three kinds of frame modes of above-mentionedsyringe pipe 9 all can use separately.

During plugging, existing commonly used purging method is: (1), on wound surface, put a root rubber pipe in addition, but also need extraction location with " mesentery method " caulking gum pipe, and increased the probability of " gas leakage " and the difficulty of sealing; (2), drive in the wrong direction to inject flushing liquor, the sepage that drains may be refilled on the wound surface, cause " retrograde infection " from former drainage tube; 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.

The angular range of angle α between glued membrane and thedrainage tube 2 is 0 °＜α≤90 °.Generally speaking, the angle between glued membrane and thedrainage tube 2 is an acute angle, but some special disease such as pancreatic diseases, gastrointestinal fistula, the interior diseases of tract etc. are 90 ° to make drain and (as Figure 11, shown in Figure 12) more convenient to operate in glued membrane and thedrainage tube 2, picture inpicture 11 is equal to the technical scheme of Figure 12.

Joint 4 is five-way joint or four-way connection (as Fig. 5, Fig. 6 A, Fig. 6 B, shown in Figure 7), five-way joint comprises and is used for two flow sub 4-1 being connected with drainage tube 2, is used for two the transverse joint 4-2 (also can be connected with conduit 11) and the catheter adapter 4-3 that is used for being connected with conduit 11 that laterally connect.Four-way connection comprises and is used for two flow sub 4-1 being connected with drainage tube 2, is used for two the transverse joint 4-2 (as shown in Figure 6A) that laterally connect.Four-way connection comprises and is used for two flow sub 4-1 being connected with drainage tube 2, is used for a transverse joint 4-2 laterally connecting, is used for the catheter adapter 4-3 (shown in Fig. 6 B) that is connected with conduit 11.Can connect by transverse pipe 8 between the transverse joint 4-2.Catheter adapter 4-3 is used to connect drainage tube 2, when a drainage tube stops up, can observe from catheter adapter 4-3 easily, be convenient in time by syringe pipe 9 flushings, simultaneously transverse joint 4-2 is with after transverse pipe 8 is connected, the drainage tube close with the drainage tube that stops up 2 also can continue drain, after a drainage tube can not take place stopping up, and the inoperable situation of negative-pressure sealed drainage.Transverse joint can also be chemically examined drain solution as sample tap simultaneously, and the reference during as doctor's medication need to prove that flow sub 4-1, transverse joint 4-2, catheter adapter 4-3 one end when not using all has seal cover.

Conduit 11 feeds in the drainage container 5 (as shown in Figure 8) by three way cock 4-4, and this structure has when extensive wound to be share.After a plurality of porous foam cushions can being connected by five-way joint, converge by the three way cock again and enter adrainage container 5,

When if wound area is big,conduit 11 also can be by feeding in the drainage container 5 (as shown in figure 10) withconduit 11 input pipes 12 connected vertically.

If wound hour, is then used simple structure (as shown in Figure 9).

Need to prove: to those of ordinary skill in the art, can also make some changes or distortion to the present invention under the prerequisite that does not change the principle of the invention, this belongs to protection scope of the present invention equally.

Claims (9)

1. negative pressure closed drainage device, it comprises porous foam cushion (1), the drainage tube (2) of band side opening, joint (4), conduit (11), drainage container (5), negative pressure source (6), drainage tube (2) connecting duct (11), conduit (11) feed in the drainage container (5), and drainage container (5) connects negative pressure source (6), an end that it is characterized in that described drainage tube (2) is positioned at porous foam cushion (1), the other end of drainage tube (2) is drawn from the upper end of porous foam cushion (1), is fixed with glued membrane (7) on the exit of drainage tube (2), and sealing film (3) is sealed on the glued membrane (7).

2. negative pressure closed drainage device according to claim 1 is characterized in that the angular range of the angle α between glued membrane and the drainage tube (2) is: 0 °＜α≤90 °.

3. negative pressure closed drainage device according to claim 1, it is characterized in that described joint (4) is five-way joint or four-way connection, described five-way joint comprises two flow subs (4-1) that are used for being connected with drainage tube (2), two transverse joints (4-2) and the catheter adapter (4-3) that is used for being connected that are used for laterally connection with conduit (11), described four-way connection comprises two flow subs (4-1) that are used for being connected with drainage tube (2), is used for two transverse joints (4-2) that laterally connect.

4. negative pressure closed drainage device according to claim 1 is characterized in that described conduit (11) feeds in the drainage container (5) by three way cock (4-4).

5. negative pressure closed drainage device according to claim 1, it is characterized in that it also comprises syringe pipe (9), one end of described syringe pipe (9) is positioned at porous foam cushion (1), the other end of syringe pipe (9) is drawn from the upper end of porous foam cushion (1), be fixed with glued membrane (7) on the exit of syringe pipe (9), sealing film (3) is sealed on the glued membrane (7).

6. negative pressure closed drainage device according to claim 1 and 2 is characterized in that being set with in the drainage tube (2) syringe pipe (9).

7. negative pressure closed drainage device according to claim 1 and 2 is characterized in that having and drainage tube (2) syringe pipe (9) placed side by side, and described syringe pipe (9) is by guide hole (10) and drainage tube (2) conducting, and with porous foam cushion (1) conducting.

8. negative pressure closed drainage device according to claim 3 is characterized in that connecting by transverse pipe (8) between the described transverse joint (4-2).

9. negative pressure closed drainage device according to claim 4 is characterized in that described conduit (11) is by feeding in the drainage container (5) with conduit (11) input pipe connected vertically (12).

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