Removable wound bandage and method for temporarily closing and draining open wound

FIELD: medical engineering.

SUBSTANCE: device has liquid-permeable porous lining that is to be placed on or in a wound, flexible plastic film having a set of holes distributed over its surface, liquid-impermeable film napkin and connection means. The porous lining has foamed polymer material having interconnecting cells. The plastic film makes contact with porous lining surface and is between wound surface and the lining when used. The film napkin is placed above the porous lining and is sticky along its perimeter to provide sealing in skin area surrounding the wound. The connection means passes through the film napkin and communicates to porous lining via liquid flow for making connection to negative pressure source for stimulating fluid flow discharged from the wound. Another embodiment has removable wound bandage usable in particular for treating large wounds requiring draining fluids. It has the first porous lining, the second porous lining, elastomer envelope, film napkin and tubular connection means. The first liquid-permeable porous lining contacts the wound and has foamed lining having foamed material based on polymer built of interconnecting cells and isolated transverse holes. The elastomer envelope has the first and the second sheets of elastomer film soldered along their periphery and enveloping said foamed lining. Each of the first and the second elastomer film sheets has spaced-apart holes. The holes in the second sheet are justified with said spaced-apart holes in the first sheet. The second liquid-permeable porous lining is to be placed under the first porous lining. It has foamed polymer material having interconnecting cells. The liquid-impermeable film napkin is placed above the second porous lining. The first porous lining is placed above the wound. The film napkin is sticky along its perimeter to glue the napkin to skin area surrounding the wound. The tubular connection means passes through said film napkin and communicates to porous lining via liquid flow for making connection to negative pressure source for stimulating fluid flow discharged from the wound. The third embodiment has the first elastomer film sheet having spaced-apart holes deviated from spaced-apart holes in the foamed lining. The second elastomer film sheet has spaced-apart holes adjusted to the spaced-apart holes in the foamed lining.

EFFECT: simplified usage; accelerated wound healing.

15 cl, 3 dwg

 

The present invention relates to methods and devices used for healing of wounds caused by injury or surgery. More specifically, this invention relates to methods and devices for facilitating the healing of open wounds such as wounds of the abdomen, which is useful temporary closure and subsequent re-opening to the final closing.

Significant progress has been achieved in preventing postoperative infections. However, the postoperative treatment of patients exposed to many types of invasive surgery, especially in relation to the abdominal cavity, improves the possibility of re-entry into the cavity to engage peritonitis and other infections, which often inhibit the final wound healing and internal organs. Although the optimal outcome is the complete lack of post-operative infections or other complications, these complications often occur. Their appearance has led today to the widespread practice of establishing a temporary wound closure and subsequent re-entry into the wound to clean the abdominal cavity and treatment of these complications that you need to spend to the end or final closure.

In the foregoing description in U.S. patent No. 5437683 issued to Neumann and others, entitled "Surgical closure," Mae is to review different complications, associated with surgery of the abdominal cavity and with the process of post-operative cleaning of the abdominal cavity. Neumann and others reveal a very difficult decision to establish wound closure with the possibility of re-entry, namely a flexible cloth or plate as a fixing device that closes the wound, creates the suction tube and is printed out in larger sealed tube, in which if necessary you can re-enter until the final closing.

Been described for many other techniques of creating postoperative temporary closures with walls after surgery on the abdomen. The study of these methods makes it possible to establish objective criteria by which to judge the suitability of different proposed modalities temporary closure.

Suitable temporary closure should be simple, easily imposed, effectively keep the contents of the abdominal cavity, to be minimal hindrance to the abdominal cavity and the surrounding tissue, minimally contribute or not to contribute to the formation of adhesions and fistula and to facilitate the process of creating the final closing.

A problem common to many existing methods create a temporary wound closure, is the formation of adhesions between tissue and the material in contact with the wound. Such spikes are undesirable because they complicate the process of training places wounds to the final closing. The location of porous materials, such as gauze, surgical towels and even open mesh sponge, in direct contact with an open wound further complicates the development of the end closure, because it creates an increased surface area, which promotes the formation of adhesions, which further complicates the removal of this material.

Maintaining a negative pressure (vacuum) at the wound site without creating conditions that hinder the removal of the temporary coating of the wound, obviously useful. The desired layered coating wounds allows a user to exert a negative pressure, and then remove the released fluid. This coating allows re-entry to clean wounds without injury place of injury. This coating wounds would be most useful for open surgical wounds of the abdomen.

These devices and methods can also be used on other types of open wounds that are difficult to heal.

The obvious need for a cover wounds and systems therapy, which allow therapeutic application of negative pressure, without causing enhanced adverse effects to designated open wound. Currently, as you know, there is no coverage for wounds or treatment system. It is on the satisfaction of this need is Timoti this invention is directed.

One of the objectives of this invention is to provide a layered bandage on the wound, which serves as a temporary covering for the open wound and allows you to apply a negative pressure to remove from the wound released liquids.

Another objective of this invention is to provide a bandage on the wound, which allows the application of negative pressure to remove fluids from the wound to facilitate wound healing, and minimizes the formation of adhesions between the dressing on the wound and underlying tissue.

Another objective of this invention is to provide a bandage on the wound, which allows the application of negative pressure to remove fluids from the wound so as not to contribute to the formation of adhesions between the dressing on the wound and underlying tissue and, nevertheless, to create a porous medium through which can pass the released fluid without excessive blocking, which would reduce the effectiveness of negative pressure.

Another objective of this invention is to provide a bandage on the wound of the abdominal cavity, which serves as a temporary covering for the open wound of the abdominal cavity and allowing the application of negative pressure to remove secreted fluids from a wound, and it can easily pull from wounds with the aim of providing repeated access to b is usnei cavity for cleaning and/or treatment.

To address these and other objectives, the invention provides for obtaining a bandage on the wound of the abdominal cavity and how it is used, which allows to apply a negative pressure to the wound site to promote healing space, while limiting the formation of adhesions, which would prevent the removal of the bandage.

According to one aspect of the present invention, there is a separable closure of wounds containing porous pad (pad), which is permeable to liquids, intended for placement on or in the wound, and the porous pad includes a polymeric foam material having mutually connected cells, and a sheet of flexible plastic film having a number of holes in its surface, and the plastic film is in contact with the surface of the porous strip, so that when using plastic strip located between the wound surface and the gasket, tape the cloth, which is impervious to liquids intended for placement over a porous strip, film and cloth is the adhesive around the perimeter to seal with the area of skin surrounding the wound, and means of connection (tubular connector)passing through the film napkin and communication stream with a porous pad for connection with a source of negative the th pressure to stimulate the flow of secreted fluids from a wound.

The holes in the flexible plastic film should be sufficiently small fraction of the area of the film in contact with the wound, so there are a limited ingrowth of fibrous tissue in the leaf. Thus, the film will not stick to the wound, but remains in such position that its relatively easy to remove. Preferably, the holes in the film should be less than 10%, especially less than 5%, or even 1-2% or less than the effective area of the film. Preferred openings in the form of slits or slots, because they constitute a very small percentage of the total film.

The slit or slits may typically be from 0.5 to 2 cm, for example from 1 to 1.5 cm in length, and they can be aligned in rows and separated by the distance from 10 to 40 mils, for example from 20 to 30 mils.

The flexible film should be tight enough to retain the shape. A suitable material is a plasticized PVC thickness from 30 to 80 microns, for example from 40 to 60 MK.

When using film is brought to such a size that it overlaps the edge of the wound. Absorbent polymeric foam material, such as reticulated foamed polyurethane, is brought to a size that corresponds to the boundaries of the wound. Fit the strip of foam material is placed on the cut film so that the edges of the film took place at the perimeter of the foam material, for example of about 20-80 is m, preferably 40-60 mm, typically about 50 mm Surgical cloth made of elastomer such film material is placed over the strip of foam material and a flexible plastic film to encapsulate and provide an airtight seal over the dressing on the wound. Suction tube or connector is configured to pass through surgical cloth in the polymeric foamed material or very close with him. Suction tube or connector summarized on surgical cloth, so that the space under the cloth can be kept under negative pressure by connecting a suction tube or a connector to a source of negative pressure. The preferred cylinder connector suction tube is described in UK patent No. 23291127 and U.S. patent No. 6216701.

Surgical tissues usually contain elastomeric film, completely covered on one side with a tacky, pressure-sensitive adhesive. Usually the cover sheet is processed releasing agent is in contact with the sticky surface and is cut right before using to open the sticky surface. For the purposes of this invention, the node adhesive elastomeric film and the protective film are cut to size (and if appropriate, the hole cut for the suction tubes and or connector) to cut the protective sheet.

The number of suitable elastomeric films include polyurethane and polybutadiene. Among the selling surgical napkins napkins are supplied to the market ZM Company under the trademark "Tegaderm".

Porous strip contains two or more layers of a polymeric foam material having mutually connected cells. Bushing (tap) or the connector suction tube is located on the top surface of the foam material for connection to a source of negative pressure. Instead of applying a flexible plastic sheet in contact with the wound, and a separate part of the polymer foam material of the foam material can be enclosed in a shell made of plastic film. In this exemplary embodiment of the invention, the plastic film may be elastomeric in nature and should not pass beyond the perimeter of the foam material. However, it is convenient to have the flange of the film, which takes place at the perimeter of the foam material, for example, about 20-80 mm, more common at about 40-60 mm, typically about 50 mm among the suitable materials for the elastomeric films include polyurethane, polytetrafluoroethylene (PTFE) or polybutadiene film, similar to those used for surgical Drapes. Preferably the elastomeric film has a thickness of about 30-70 MK, especially 40-60 microns, usually about 50 MK. The number p is polymer foam plates of different sizes are cut, formed and enclosed in a sheath of elastomeric film material. Easy to solder film with the formation of the shell by means of ultrasonic welding or welding with heat. Usually the wounds of the abdominal cavity are approximately elliptical shape and the strip of foam material is also mostly elliptical. Typically, the dimensions of the strips of foamed material can be approximately 280, 320 and 380 mm for the main size and about 140, 175 and 250 for the smaller size of the ellipse. Suitable polyurethane foam material with a thickness of about 5-10 mm, for example, about 6 mm, the Preferred foamed polyurethane materials having a pore size of about 30-50, for example 40 pores per inch (25.4 mm). You can alternatively use foam from esters or polyvinyl alcohols. If you apply multiple layers of foamed material, various foam materials can be used for different layers. For example, a layer in contact with the lower film may be made of foamed material of polyvinyl alcohol, and the upper layer (s) of the foam material may be polyurethane.

According to one aspect of the invention a flexible film sealed around the perimeter with the formation of the flange connected to the film passing outward beyond the perimeter of Pori is the strip.

In multilayer example of executing at least one lower layer of foamed material may be enclosed in an elastomeric material and is placed in direct contact with the tissue inside the open wound. In another example implementation uses only one layer of foamed material and a sheath of elastomeric material containing a layer of foamed material is placed in direct contact with an open wound.

Fluids are drawn by negative pressure through the holes in the flexible or elastomeric material, and then through the foam material. In multilayer sample liquid are drawn by negative pressure through openings posted in the elastomeric shell through the lower layer (s) of foamed material, again through the openings in the elastomeric membrane and then through the top layer of foamed material, which is placed over the prisoners in the lower shell layer (s).

In the multilayer sample run of the lower layer (s) of foam material may have a smaller porosity, whereas the top layer of foam material may have a larger porosity. In all the examples of this invention, elastomeric adhesive sheet, for example a surgical cloth, covers all of the dressing on the wound and seals the edges to the skin, OK is usausa the wound. The corresponding vacuum device attached to the sleeve of the suction tube or connector to create a therapeutic negative pressure.

According to another aspect of the present invention, a second sheet of flexible film is located between the film with a cloth and a porous strip, a second sheet of flexible film and is sealed relative to the first sheet of flexible film on their respective perimeters with the formation of the shell, while a second sheet of flexible film formed with holes, so that when the means of connection is connected to a source of negative pressure, the exudate from the wound is drawn through the porous strip and strip through the holes in the second flexible sheet.

Figure 1 is a view in cross section of the device of the first exemplary embodiment of the present invention, showing the use of Raman one layer of foam material inside the shell and the top sheet of the second layer of foam material.

Figure 2 is a view in cross section of a second exemplary embodiment of the present invention, similar to figure 1 but showing the use of a double layer of foam material inside the shell.

Figure 3 - the third exemplary embodiment containing a flexible sheet and a layer of foamed material.

This invention is suitable for use in combination with Hiro the strategic methods, requiring repeated access to the peritoneal cavity after her surgery. This invention is directed to the creation of removable and healing bandages, which facilitates both wound healing and its final closure.

In patent applications U.S. No. 08/951832 and U.S. No. 09/078223 and in the United Kingdom patent No. 2307180 (WO 94/20041 and WO 97/18007) describes the system of negative pressure suitable for vacuum required for use in povjazocki structures and the method of treatment described herein. The disclosure of these documents is incorporated herein by reference. Negative pressure is defined here as a vacuum of less than 1 atmosphere pressure. Controlling the negative pressure and the collection and destruction of secreted fluids are also described in the above references. The method of use of such systems in combination with povazan structure described herein will become apparent to the General staff.

Figure 1 shows the first exemplary embodiment of the present invention, where one bottom layer of foamed material is used as the layer of the dressing in contact with the wound. Figure 1 and figure 2 are views in a partially disassembled state of a bandage of the present invention. While using layers of foam material and in between the sheets of elastomeric material is in close and sometimes hermit cnom contact with each other.

Full bandage on the wound 10 shown in figure 1, contains the upper layer 12 of foamed material and the bottom layer 36 of foamed material (the first porous pad and the second porous pad, respectively). The bottom layer 36 of foamed material is wrapped inside two sheets of elastomeric material 38, such as that used for membranes surgical Drapes. Elastomeric sheets 38 can preferably be performed from a polyurethane film that provides both the necessary strength and elasticity, need to be placed in direct contact with the wound. Another suitable material is PTFE. Elastomeric sheets 38 are hermetically sealed at its periphery, for example by welding or adhesive so as to surround the bottom layer of foamed material 36. Elastomeric sheets 38 and resist the formation of wounds and therefore are appropriate for placement in direct contact with the surface of tissue inside the wound and around the periphery of the wound.

Placement of such a non-porous material film in the contact hole wounds, and not open cellular foam material or mesh material, significantly reduces the occurrence of adhesions, which would remove the bandages difficult or dangerous. Pliable and flexible shell of the lower layer is easily inserted over the wound or the wound. When the same is assured, the shell of the lower layer can be placed either above the wound, with the edges of the layer are in contact with the surrounding wound skin, or preferably in the wound, leaving the top surface of the lower layer exposed over the wound.

All the dressing 10 has a generally flat profile, as shown in cross section in figure 2 and figure 3. The shape of the bandage can vary significantly depending on the size and shape of the wound to which it should apply. Rectangular or square shape having dimensions of about 8×8 inches (203,8×203,8 mm) and up to 18×18 inch (457,2×457,2 mm) could be appropriate for use in combination with the above-described wounds of the abdomen. Other sizes and shapes such as round, oval or even oblong, may be suitable for other types of wounds. Common sizes thicknesses and dimensions in the plane of the oval or elliptical plates of foamed material given above. This basic structure can easily be implemented with any of these, or even other shapes and sizes.

Elastomeric sheets 38 are many holes 32 and 34 in the upper and lower walls 28 and 30 of the shell, which they form. These openings can be of the order of 3-6 mm (1/8 inch-1/4 inch)in diameter or maximum size and can be dispersed on the surface of the formed shell on the centers 25-75 mm, Preferably reject the party are in the form of slits or slots. The position of the holes can be associated with the holes located in the lower foam layer 36, as described in more detail below. If holes are provided in the foamed material, they can have different sizes and shapes.

The lower foam layer 36 preferably is made of polyurethane having a high degree of catchatori and good permeability with suction. The preferred foam materials having at least 90% and preferably 95% mutually connected cells. Preferably foamed materials have from 20 to 60 pores per inch (25.4 mm). Preferably foamed polyurethane is obtained by reaction of hydrophilic complex oligoarticular with diisocyanate tolylene in the presence of water. When the reaction is released carbon dioxide that provides the appearance of a gaseous blowing agent. The pore size can be controlled by temperature and mixing. The mesh structure is improved by maintaining the foamed material in the chamber, in which the initially formed of foamed material, and the fact that the pore-forming force to expand further and to break through the walls of cells.

As mentioned above, the lower foam layer 36 is punctuated by numerous holes that pass completely through the layer from the top surface to the bottom. As you can see on their location relative to the holes 32 and 34 in elastomere the shell, holes in the lower foam layer 36 form a "shell"that you can pull secreted from the wound fluid. The holes 34 in the bottom surface of the first flexible sheet) elastomeric sheath 38 can be placed directly over the holes in the foam layer 36.

The holes 32 in the upper wall 28 and the second flexible sheet) elastomeric sheath 38 is preferably located so that they are not aligned with the holes in the foam layer 36 and holes in the bottom surface 30 of the shell 38, i.e. the holes in the first flexible sheet are offset from the holes in the second flexible sheet. Thus, fluids are drawn through the respective negative pressure) from the wound into the holes 34 in the bottom surface 30 of the shell 38 and into the holes of the "shells" in the lower foam layer 36. Then the liquid is drawn into the cells of the lower foam layer 36, where they disperse before they again pull through the holes in the elastomeric sheath 38, this time in the upper wall 28 of the shell 38. The placement of the lower foamed layer/coating on the wound or inside it therefore requires proper orientation of the holes, as shown.

The problem faced in the prior art, before it was worsening caused by contamination of the environment through which should flow the released fluid and maint is proving their residues of organic substances. Such leaks are drawn to the source of negative pressure, thus forming a blockage of the fastest along the straight path to the vacuum source, in this case, in the suction tube. In this case, the vacuum is dissipated to delocalizing for. This dispersion is provided by a layer of foamed material and spaced from each other by the holes in the elastomeric sheets. Even in the absence of the layer of foamed material is displaced holes reach this goal. The dark arrows in figure 1 and figure 2 show the course of the released fluid through the bandage.

The top foam layer 12 creates the initial mechanism of dissipation of the vacuum, which pulls the liquid up from the wound. In a now preferred example of execution shown in figure 1, the upper foam layer 12 is more rough (raw) based on a composite polyester or polyurethane foam material having a greater rigidity than the lower layer of foamed polyurethane. For example, the bottom layer of foamed material 36 may be approximately 1.5-2 times more pores per inch (25.4 mm)than the layer of coarser foam material. Usually the rough layer of foamed material can have 20 to 30 pores per inch (25.4 mm). The top foam layer 12 should be slightly stiff to retain its shape under the influence of even relative activities is but a strong negative pressure. The top foam layer 12 is placed in direct contact with the upper wall 28 of the elastomeric sheath 38, containing the lower foam layer 36. Covers the upper foam layer 12 and the remainder of the elastomeric bandage cloth 14, which in the preferred exemplary embodiment is made of the same polyurethane film and elastomeric sheath 38.

Napkin 14 is one sheet, cut large enough to completely cover the upper foam layer 12 and an additional area of skin surrounding the wound site. Pressure-sensitive adhesive, such as a permanent adhesive acrylic adhesive applied on at least the periphery of the napkin 14 to create an airtight seal about the skin, effectively closing under a bandage and the wound.

The connector 16 is placed over the hole cut in the cloth 14 and fixed therein sealing plate 22. The sealing plate 22, which is circular in the preferred exemplary embodiment, it sticks to the bottom of the flange 20 of the connector 16, and also to the cloth 14. Thus, negative pressure is created in the upper foamed layer 12, when the corresponding suction line is attached to the tubular connector 18, is placed on the connector 16. The plot of the flange 20 may have a bottom surface in which are formed channels for which rotamania fluid from the porous strip to the tubular part 18 of the connector 16. Suitable suction head connector shown in GB 2329127 and US 6216701 (WO 99/13793).

Another exemplary embodiment of the present invention is described in figure 3. In this example, execution of the principles of operation are identical, but the bandage is formed of only one of the foam layer, here without the foam layer inside a non-porous film. Used foamed material is painted black polyurethane with open cells, now commercially available in the product V.A.C successor.

As can be seen from figure 3, the flexible sheet 38 semi-rigid plastic material, for example, formed from plasticized PVC, is placed in contact with the wound, so that the cut edge against the inside wall of the wound. The sheet has openings 34, which are preferably slits or narrow slots. Cellular plastic foam material is placed on top of the sheet 38. Suction head connector 16 is placed so that its portion of the flange 20 is in contact with the top surface of the foam strip, and a surgical cloth 14 is placed over the foam material and the sheet 38 to seal the dressing in the wound.

Instead of having separate sealing pads 22 for sealing the connector to the bandage, the overlay may be part of a surgical wipes, as described and illustrated in GB 2329127 and US 6216701.

The structure of the armband this is subramania may overlap in certain circumstances in connection with various types of wounds. In the case of an open wound of the abdominal cavity, which may be due to surgery, the lower foam layer contained within an elastomeric membrane will be placed inside the wound, and the periphery may be held under the fascia and the peritoneum of the abdominal wall. Then the upper foamed layer can be cut to size suitable for placement on the exposed upper surface of the cavity of the lower layer. A napkin with correctly positioned sleeve then can be placed over the top foam layer and the wound entirely, passing two or more inches (50.8 mm or more) over the skin surrounding the wound, and sticky hold the bandage in place. The application of the suction line, as described above, attracts all the dressing on the wound and serves to initiate flow of the effluent through the bandage.

The thickness of the top and bottom of the foam layer is determined in part by the desire to obtain a flat profile bandage when it is installed on site. Tighter upper foamed layer in a preferred example of execution to have a thickness of about 25-75 mm (1-3 inches) in an uncompressed state. Its rigidity must limit the compression up to 80-90% at a negative pressure, usually associated with the absorption of wounds, etc. If you are using more supple bottom foam layer, it should have a thickness of about 5-15 mm, for example 5-10 mm (approximately the 1/4-3/4 inch), so it can be easily inserted into the wound.

The structure of this invention can also be used on the surface of the skin when an open wound is not associated with the internal cavity, etc. In this case, the periphery of the lower elastomeric membrane may be in contact with the skin surrounding the wound. It is appropriate, until the periphery of the cloth covering the top foam layer, conveniently passes beyond the lower shell, preceives to the skin and sealing bandage. It therefore becomes evident that the lower elastomeric membrane can be made in advance with a variety of shapes and sizes, while the upper foam layer and the cloth can be cut at the time of placing the bandage on the wound to an appropriate size and configuration.

Figure 2 revealed an alternative preferred exemplary embodiment of the present invention, where one bottom layer of foamed material of figure 1 is replaced with a double layer of foamed material. In this example, run the elastomeric sheath 38 comprises a first lower foam layer (first adjacent portion of the porous strip) 40 and the second bottom foam layer (the second adjacent portion of the porous strips) 42. The advantage realized by this arrangement lies in the offset placement of holes, distributed in both foam layers. Holes 34, punctured in the bottom wall 0 the elastomeric sheath 38, remain placed on one axis with the holes of voids located in the second (bottom) layer of foam material 42. Holes 32, pierced in the upper wall 28 of the elastomeric shell 38, as described above, are offset from the holes 34 in the bottom surface of the shell, but aligned with the holes of voids located in the first (top) layer of foam material 40. Under this structure there is a further dispersion of the flow, which reduces the localization of polluting organic substances and prolongs the life of the dressing. Other elements, applications and methods of use headbands are the same as those described above in conjunction with figure 1.

The present invention is described in conjunction with specific preferred examples of its implementation. Alternative examples of implementation and further applications of the invention assistants will be able to anticipate, without departing from the basic concepts and principles of the invention. Certain materials have been described as suitable for a particular layer of foamed material and the film, although equally can be used a variety of similar materials. The specific geometry and dimensions have been described as suitable in different conditions and for different applications headbands, especially in combination with open and available again RA is AMI abdominal cavity. These geometries and dimensions are not intended to be limiting, but are described as representatives of different shapes and sizes that are possible with the basic layered structure of the dressing. Therefore, the scope of the invention is not limited to the above description, but rather is defined by the following claims.

1. Removable bandage on the wound, containing permeable to liquids porous pad, designed for placement on the wound or the wound and containing polymeric foamed material having mutually connected cells, and a sheet of flexible plastic film with holes distributed over its surface, and the plastic film is in contact with the surface of the porous strip and is located in use between the wound surface and the gasket, and impervious to liquids film napkin designed for placement above the porous gasket and made sticky on the perimeter for sealing in the area of skin surrounding the wound, and means of connection passing through the film napkin and communicates with the fluid flow with porous gasket for connection to a source of negative pressure to stimulate the flow of secreted fluids from a wound.

2. The bandage according to claim 1, characterized in that the holes in the flexible plastic film issue is lnany in the form of slots or slits.

3. The bandage according to claim 1 or 2, characterized in that the flexible plastic film is elastomeric film material.

4. Bandage according to any one of the preceding paragraphs, characterized in that the means of connection includes a flange portion disposed between the film with a cloth and a porous strip, and a tubular portion passing through a napkin for connection with a source of negative pressure.

5. The bandage according to claim 4, characterized in that the flange part of the connection means includes channels for directing fluid flow from a porous strip to the tubular part.

6. Bandage according to any one of the preceding paragraphs, characterized in that the second sheet of flexible film is located between the film with a cloth and a porous strip, a second sheet of flexible film span with the first sheet of flexible film on their respective perimeters with the formation of the shell, while a second sheet of flexible film formed with holes, so that when the means of connection is connected to a source of negative pressure, the exudate from the wound is drawn through the porous strip and strip through the holes in the second flexible sheet.

7. The bandage according to claim 6, characterized in that the flexible film welded together along the perimeter of each other with the formation of the flange connected to the film passing outward beyond the perimeter of the porous strip.

8. Closing pop or 7, characterized in that the holes in the first flexible sheet are offset from the holes in the second flexible sheet.

9. Bandage according to any one of p-8, characterized in that the holes in the first flexible sheet aligned with the holes within the second bottom of the foam layer of the porous strip and the holes in the second flexible sheet are aligned with the holes inside the first lower foam layer porous strip.

10. The bandage according to claim 9, characterized in that the porous strip contains two or more layers of a polymeric foam material having mutually connecting the cell.

11. Bandage according to any one of the preceding paragraphs, characterized in that the porous pad includes a polymeric foam material having at least 90% mutually connected cells.

12. Bandage according to any one of p-11, characterized in that between the second sheet of flexible film and film napkin placed additional porous strip.

13. Removable bandage on the wound, especially for the imposition of the large open wound requiring drainage of the liquid containing the first porous pad, permeable to liquids intended for placement in contact with the wound and containing foamed gasket containing foamed material based on a polymer having mutually connected cells, and have posted poperen the f holes, and an elastomeric sheath containing the first and second sheets of elastomeric film, welded at its periphery and surrounding the specified foam gasket, and the first and second sheets of elastomeric film are each spaced holes in it, and these spaced holes in the second sheet are aligned with these spaced holes in the first sheet; a second porous pad, permeable to fluids, designed for placement over a specified first porous gasket and containing polymeric foamed material having mutually connected cells; film napkin, impermeable to liquids, intended for placement on the second porous pad, with the specified first porous gasket placed over the wound and tape cloth made sticky on the perimeter for gluing cloth to the area of skin surrounding the wound, and a tubular connector passing through the specified film napkin and adjoining fluid flow with porous gasket for connection to a source of negative pressure to initiate flow of secreted fluids from a wound.

14. Removable bandage on the wound, especially for the imposition of the large open wound requiring drainage of the liquid containing the first porous pad, permeable to liquids, prednaznachennoe is for placing in contact with the wound and containing foamed gasket, containing foamed material based on a polymer having mutually connected cells, and having spaced transverse openings, and an elastomeric sheath containing the first and second sheets of elastomeric film, welded at its periphery and surrounding the specified foam gasket, and said first sheet of elastomeric film has spaced holes that are offset relative to the aforementioned spaced holes in the foam strip and the specified second sheet of elastomeric film has spaced holes aligned with spaced holes in the foam pad, the second porous pad, permeable to fluids, designed for placement above the first porous gasket and containing polymeric foamed material having mutually connecting the cell, the film napkin, impermeable to liquids, intended for placement over a specified second porous pad and the first porous pad placed over the wound and tape cloth made sticky on the perimeter for attachment of the napkin to the area of skin surrounding the wound, and a tubular connector passing through the film napkin and reported by the fluid flow from the second porous pad for connection with a source of negative pressure to initiate flow allocated the liquid is out of the wound.

15. The way the temporary closure and drainage, open wounds, especially wounds of the abdominal cavity after surgery, which may require re-access it through the abdominal cavity, which includes the following steps: providing a flexible film having holes, and placing the film in contact with the wound, providing a porous strip of size at least not smaller than an open wound, placing a specified porous pad on top of the film, leaving part of the surface of the porous strip open, placing napkins elastomeric material over the porous gasket, seal flexible film and a porous strip inside the wound by means of a removable adhesive elastomeric film installed in contact with the area of skin surrounding the wound, sealing connector on a napkin, so that the space under the cloth can be kept under negative pressure by connecting the connector to a source of negative pressure, and the creation of negative pressure to pull the thread secreted fluids from a wound.



 

Same patents:

FIELD: medicine, abdominal surgery.

SUBSTANCE: the present innovation deals with treating patients in case of destructive forms of pancreatitis. One should lance a gastro-colic ligament, mobilize splenic and hepatic angles of large intestine, tighten a middle colic artery, descend mesenteric root cross-sectionally against a colon, dissect parietal peritoneum along the upper and lower edges of pancreas to withdraw it into abdominal cavity, remove necrotized tissues. Then one should apply a rubber balloon with drainage tubes along its upper and lower edges into omental cavity: one balloon's end should be withdrawn through median wound, another one - through contra-aperture being 5 cm below a costal arch along median axillary line. The method suggested enables to form adequate access to patient's pancreas.

EFFECT: higher efficiency of drainage.

6 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: method involves puncturing pyogenic cavity with trocar having blunt obturator via skin incision made outside of abscess boundary having length equal to arthroscope diameter. Then, arthroscope is introduced and the cavity is filled with physiologic saline. Pyogenic cavity revision is carried out under arthroscope control, irrigation cannula is set, constant water medium is created. Arthroscopic mill on shaver handle is introduced via another skin incision. Non-viable tissues are removed with stage-by-stage hemostasis using endocoagulator. The cavity is healed. Perforated draining tube is set under arthroscope control. Tube ends are brought out through pierces outside of the cavity and sutured to skin. Active suction of wound exudates is carried out using closed vacuum drain system in postoperative period. The drainage is removed when cleaning the wound from wound microflora and single sutures are placed.

EFFECT: enhanced effectiveness of treatment.

3 cl

FIELD: medical engineering.

SUBSTANCE: device has suction tube having lateral openings and irrigation tube. The irrigation tube is connected to jet-action atomizer. The atomizer is hollow collapsible cylinder with holes. Ultrasonic radiator having conductor to ultrasonic frequency oscillator is available in the cylinder. The radiator and conductor enable one to introduce ultrasonic oscillations into antiseptic solution.

EFFECT: enhanced effectiveness of treatment.

1 dwg

FIELD: medicine.

SUBSTANCE: method involves puncturing pyogenic abscess cavity under ultrasonic control with draining tube left therein. Laparoscope connected to monitor unit is introduced into abscess cavity. One of introduced drains is set in upper point of the cavity and the other one in lower point. The abscess cavity is filled with ozonized solution to 2/3 of its volume and bubbled with ozone-oxygen mixture during 2-3 min changing the solution until it becomes transparent. The emptied cavity walls are treated from distance of 3-4 cm with laminar airflow heated to 38-40°C under pressure of 1-1.5 atm during 2-3 min. Next to it, the cavity walls are irradiated from distance of 2-3 cm with non-coherent red light during 2-3 min per each area.

EFFECT: improved safety conditions and healing quality.

FIELD: medicine.

SUBSTANCE: method involves conducting bougie through the liver. Flexible tube is attached to its end and set in bile ducts. Flexible radio-opaque conductor is introduced through the flexible tube. The tube is removed. Draining tube is introduced along the conductor from porta hepatis to its diaphragmatic surface into the ducts to be drained.

EFFECT: reduced risk of traumatic complications.

The invention relates to medicine, namely to surgery, and can be used for sanitation of the abdominal cavity with generalized peritonitis
The invention relates to medicine, namely to surgery, and may be applicable for the surgical treatment of pancreatic necrosis

The invention relates to medicine, namely to devices and devices for the treatment of abdominal diseases, namely anal (hemorrhoids, proctitis, fissures), gynecological (erosion, obesity, vulvovaginitis), as well as for active drainage surgery

The invention relates to medicine and can be used in neurosurgery for long-term drainage of intracranial cavities containing liquid (e.g., cysts, chronic hematomas, Wagram, isolated fragments of brain ventricles, etc.)

Drainage device // 2240150
The invention relates to medicine, namely to section purulent surgery, and can be used for drainage of purulent cavities

Hygienic layer // 2261080

FIELD: absorbing article formed as hygienic layer.

SUBSTANCE: absorbing article has flexible wings extending outside from absorbing body along portion of said body reducing to cone. Wings have outer longitudinal edges, which, when wings are in unbent position, are inclined relative to axis of symmetry of article at an angle, at which the distance between outer sides of wings and longitudinal axis of symmetry is reducing toward rear end of article.

EFFECT: enhanced reliability and comfortable usage of hygienic article.

9 cl, 2 dwg

Absorbing article // 2261079

FIELD: medicine.

SUBSTANCE: absorbing article has moisture content indicator disposed on inner side of article and made in the form of pattern seen through rear sheet material. Moisture content indicator is applied onto one strip having color other than color of remaining portion of rear sheet material.

EFFECT: simplified identification of location of moisture content indicator.

10 cl, 5 dwg

FIELD: production of absorbing articles for absorbing of fluids released by organism.

SUBSTANCE: absorbing article has rear sheet with high friction coefficient and at least one tape tongue protruding therefrom. Tape tongue has pressure-sensitive adhesive applied thereto in a minimal amount sufficient for supporting article in position, wherein user's underwear is remote from user's body. When user's underwear adheres to user's body, rear sheet with high friction coefficient serves as main means for supporting absorbing article by normal forces acting from the side of user's body and underwear. In case of necessity for removal of absorbing article from underwear, user employs tape tongue providing additional benefits. User may grip absorbing article himself for removing the latter, which is an alternative for gripping of contaminated part of article. Also, contaminated article may be folded or rolled and may be further held in the given position by means of tape tongue to provide for convenient and unseen removal of absorbing article.

EFFECT: simplified construction, convenient and simplified treatment.

7 cl, 6 dwg

FIELD: production of hygienic articles.

SUBSTANCE: hygienic article has wings laid onto upper sheet of layer and held in said position by overlapping strip. Each of said wings has adhesive region used for attachment of wing to underwear. Each of said adhesive regions is overlapped by detachable strip. Detachable strips and overlapping strip have cohesion layer providing cohesive connection between overlapping strip and each detachable strip, said wings being retained in folded position.

EFFECT: simplified construction and convenient use.

24 cl, 6 dwg

FIELD: medicine, in particular cosmetology.

SUBSTANCE: invention relates to one-short dry cosmetic cleaning agent having moist flexibility. Claimed agent contains foaming surfactant and water insoluble substrate, comprising perforated sheet (napkin) selected from non-woven, woven, aqua-entangled or air-entangled materials. Agent preferably has predetermined lather volume coefficient.

EFFECT: impregnated with surfactant napkin, which is capable to possess original shape after deformation causing impregnation with water.

16 cl, 11 tbl, 6 dwg, 2 ex

FIELD: medical engineering.

SUBSTANCE: device has longitudinal direction and transverse direction. Two lateral edges of essentially longitudinal direction have superficial layer permeable for liquid, superficial layer impermeable for liquid and absorbing member placed between the superficial layers. The absorbing member has compressible absorbing material layer. The absorbing material layer has at least one fold running in longitudinal direction, the fold being at least partially pressed giving to the compressible absorbing material layer greater density in the fold vicinity than in the compressible absorbing material layer areas outside the fold. The fold has swelling properties when being wetted and/or subjected to mechanical treatment and it reshapes at least partially into its original shape assumed before being pressed.

EFFECT: reduced risk of leakage; arrangement kept unchanged irrespective of usage mode.

12 cl, 13 dwg

FIELD: medical engineering.

SUBSTANCE: device has longitudinal direction and transverse direction. Two lateral edges of essentially longitudinal direction have superficial layer permeable for liquid, superficial layer impermeable for liquid and absorbing member placed between the superficial layers. The absorbing member has compressible absorbing material layer. The absorbing material layer has at least one fold running in longitudinal direction, the fold being at least partially pressed giving to the compressible absorbing material layer greater density in the fold vicinity than in the compressible absorbing material layer areas outside the fold. The fold has swelling properties when being wetted and/or subjected to mechanical treatment and it reshapes at least partially into its original shape assumed before being pressed.

EFFECT: reduced risk of leakage; arrangement kept unchanged irrespective of usage mode.

12 cl, 13 dwg

FIELD: medical engineering.

SUBSTANCE: device has longitudinal direction and transverse direction, two lateral borders arranged essentially in longitudinal direction, anterior part, posterior part, the first surface and the second surface, absorbing member placed between the first surface and the second surface. The absorbing member has essentially triangular shape, its anterior part being wider than the posterior one. The absorbing member also has the basic absorbing region arranged in the article plane in a way that at least 85% of its total absorbing capacity is concentrated in the anterior three-fourth of the article length and at least 70% of its total absorbing capacity is concentrated in the anterior half of the article.

EFFECT: wide range of functional applications.

9 cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: device has longitudinal direction and transverse direction, two lateral borders arranged essentially in longitudinal direction, anterior part, posterior part, the first surface and the second surface, absorbing member placed between the first surface and the second surface. The absorbing member has essentially triangular shape, its anterior part being wider than the posterior one. The absorbing member also has the basic absorbing region arranged in the article plane in a way that at least 85% of its total absorbing capacity is concentrated in the anterior three-fourth of the article length and at least 70% of its total absorbing capacity is concentrated in the anterior half of the article.

EFFECT: wide range of functional applications.

9 cl, 3 dwg

FIELD: sanitary and hygienic facilities.

SUBSTANCE: superabsorption product of invention comprising liquid-impermeable base layer; liquid-absorbing intermediate layer containing partially neutralized acid-behaving hydrophilic polymer, in particular surface cross-linked polyacrylate; and liquid-permeable non-absorbing top layer is distinguished by containing alkali-neutralizing additive uniformly spread in absorbing intermediate layer.

EFFECT: enhanced controlling unpleasant smell and inhibited microbial growth.

10 cl, 1 tbl

FIELD: medicine, hygiene.

SUBSTANCE: the suggested product contains the mixture out of thermoplastic hydrophobic and absorbing fibers. Absorbing fibers are present in the quantity being sufficient to efficiently absorb liquid from external surface of combined covering and transmitting layer at no competition with absorbing middle layer to provide quick penetration of liquid at minimal reverse wetting.

EFFECT: higher efficiency.

19 cl, 2 dwg, 1 tbl

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