Method for manufacturing drainage foil, tubular drainage foil, and wound care kit

Abstract

The present invention provides a method for manufacturing a double-walled drainage foil having an open drainage space. [Solution] The method comprises: i) providing a first web-like element and a second web-like element; ii) perforating the first web-like element and the second web-like element, wherein at least one opening, preferably a plurality of openings, that allow the passage of bodily fluids is formed in each of the first web-like element and the second web-like element; iii) positioning the first web-like element on the second web-like element such that the first web-like element and the second web-like element are arranged substantially parallel to each other; and iv) connecting the first web-like element and the second web-like element at at least one fastening region, particularly at least one point fastening region, preferably by ultrasonic welding, to obtain a double-walled drainage foil having an open drainage space formed between the first web-like element and the second web-like element.

Description

[Technical Field]

[0001] The present invention provides a method for manufacturing a double-walled drainage foil having an open drainage space, and a tubular This invention relates to a method for manufacturing drainage foil. The present invention further relates to a tubular drainage foil, wound care foil. In a tubular drainage foil or wound care kit for use in wound care. The present invention further relates to a method for caring for wounds. [Background technology]

[0002] Drainage foils are used in various types of clinical imaging or trauma, particularly in the abdominal cavity, thoracic cavity, or bone. During or after surgery in the pelvic cavity, for example, temporary covering of an open wound and / or wound If drainage of bodily fluids from the area is necessary, it is required. Covering an open wound may require several interventions. When needed on a daily basis, for example, on the one hand, it allows for quick access to internal organs, and on the other hand, Therefore, it may be necessary to reduce the adverse effects of exudate formation in the wound area. By covering the affected area, a significant reduction in mortality can be achieved in some indications. Furthermore, The accumulation of fluids such as blood or wound secretions in a wound can interfere with the healing process, thus hindering wound healing. To facilitate this, aspiration of bodily fluids, especially postoperative drainage, may be necessary.

[0003] Basically, there are two main requirements for drainage foil suitable for the stated purpose of use in medical applications. It is set from a specific perspective. Firstly, it is used especially in open abdominal, thoracic, or pelvic cavities. In such cases, good exudate management in the wound area, i.e., aspiration of body fluids throughout the wound area, It must be achieved. Furthermore, friction between the wound or surrounding organs and the drainage foil Reduction should be achieved, and at the same time, the wound should be adequately shielded from the environment. Furthermore, ensure that contaminants do not enter open wounds or the patient's body through the drainage foil. It must be done.

[0004] European Patent No. 0 261 167 describes a liquid-permeable wound dressing, and the liquid-permeable wound The wound dressing is provided to be in direct contact with the wounded base and to adhere the wound dressing to the wound area. It has a hydrophobic layer to prevent contamination of the wound caused by the application of the material. However, satisfactory exudate management in the wound area is achieved with the wound dressings described in this specification. It cannot be obtained.

[0005] To improve the management of exudate in wound areas, U.S. Patent No. 7,381,859 addresses exudate An absorbent foamy layer between two liquid-permeable foil-like, web-like elements. We propose a wound dressing that is housed in a web-like element in the form of a plastic film. It can be made concrete. However, in the case of wound dressings known from this literature, sufficient aspiration of exudate is necessary for wound dressing. If the dressing is not performed at the edges, and as a result, complications of wound care occur in these edges, It is known that there is a problem with this.

[0006] International Patent Publication No. 2007 / 118652 describes a wound spacer grid, and the wound spacer Pasagrid allows for the placement of absorbable secondary bandages without adhesive, and has multiple three-dimensional perforations. This comprises a first smooth surface and a second surface having a rough handle. When a known wound dressing is used, the downstream absorbent material will provide satisfactory results over a relatively long period of time. It can be replaced to ensure wound care. However, the wound dressing even when the system described in the literature is used, especially in the case of wounds deep inside the body, there is a problem that satisfactory exudate management cannot be achieved over the entire wound area. has been found.

[0007] European Patent No. 2 424 477 describes a double-wall foil for wound dressing having an open drainage space. However, in the case of the wound dressing known from this document, in the case of a complex wound area, especially a wound deep in the body, it has been found that it is a problem that satisfactory covering of the wound area cannot be achieved. Furthermore, the production of known wound dressings has been found to have problems with production efficiency. SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] In view of the above problems in the prior art, an object of the present invention is to provide a drainage foil that can manage exudate well over the entire wound area without contaminating the wound, especially in the case of complex wounds such as surgical wounds of internal organs and / or locomotor organs. Furthermore, an object of the present invention is to provide an improved method for manufacturing a drainage foil. MEANS FOR SOLVING THE PROBLEMS

[0009] Manufacturing method for double-walled drainage foil According to the present invention, this object is achieved by a method for manufacturing a double-wall drainage foil having an open drainage space, the method comprising the following steps. i) providing a first web-like element and a second web-like element; ​​​​​​ii) A step of perforating the first web-like element and the second web-like element, the first In each of the web-like element and the second web-like element, at least the passage of bodily fluids is made possible. Another opening, preferably multiple openings that allow the passage of bodily fluids, is formed, perforation The process and iii) The second web-like element is positioned so that the first web-like element and the second web-like element are positioned approximately parallel to each other. The process of placing a first web-like element on top of the first web-like element, iv) The first web-like element and the second web-like element are fastened together in at least one fastening region, particularly a small At least one point-shaped fastening region, preferably connected by ultrasonic welding, the first web A double-walled drainage foil is obtained in which a drainage space is formed between a first-dimensional element and a second web-like element. The process.

[0010] In the method according to the present invention, a first web-like element and a second web-like element are connected, and both web By perforating the web-like elements, capillary action is made possible between individual web-like elements. A drainage space is formed, which in turn prevents body fluids, especially exudate, from leaking out of the drainage space. This is prevented, while at the same time it is possible to distribute body fluids throughout the drainage area, and for this purpose It is absolutely not necessary to take additional measures such as adding extra absorbents.

[0011] In this way, effective exudate management becomes possible throughout the entire wound area, but this is because This is because there are no marginal regions lacking capillary function that would negatively impact exudate management. The method according to the present invention allows for the treatment of all wounds without any problems, even when applied intraluminally. It becomes possible to manufacture drainage foil that can be cut to fit any size or structure. Furthermore, it ensures the desired drainage function throughout the entire wound area. In this case, this method is used for adhesion of tissues and cells at the wound base, or in the case of surrounding organs. It may include a drainage foil made of a smooth surface to prevent adhesion. In this case, this method prevents adhesion of tissues and cells to the wound base, or to the surrounding organs. In some cases, the drainage foil may be made of a smooth surface. Furthermore, this method is The drainage of the drain foil is facilitated by the fact that the ve-shaped element itself is formed from a liquid-permeable material. This may include the entry of bodily fluids into the liquid space.

[0012] In this case, the stability of the drainage foil produced by the method according to the present invention is the first web A drainage space starting from a web-like element or a second web-like element and extending in the direction of other web-like elements. It is formed by channels that open inward, and the channel walls of these channels are perforated into web-like elements. If each web-like element is formed integrally by poring, then improvement is possible. can.

[0013] In the last embodiment of the present invention, An opening or channel extends from one web-like element towards the other web-like element. The cross-sectional area of ​​the opening or channel decreases in a plane extending perpendicular to the depth direction of the drainage foil. When provided in such a manner, in particular, capillary action that promotes the entry of body fluids into the drainage space If possible, drainage management can be improved particularly effectively. In this way, on the one hand, wound This helps to remove exudate from the area, while preventing backflow from the drainage space into the wound area. It can be done.

[0014] Within the scope of the present invention, at least one opening that allows the passage of bodily fluids is 100 μm in diameter. A range of up to 2000 μm, preferably a range of 300 μm to 700 μm, more preferably 4 When the diameter is in the range of 00 μm to 600 μm, it is particularly preferred for effective exudate management. It has been proven that excellent capillary action allows the passage of bodily fluids, and such a diameter It has been found that this can be achieved by having at least one, preferably multiple, openings. It was done.

[0015] Furthermore, the first web-like element and the second web-like element are preferably fastened in multiple fastening areas. When connected by numerous fastening areas formed in a grid arrangement, exudate management is particularly important. It is good, and in particular, the good stability of the drainage foil is guaranteed. In terms of the excellent suction ability of the lure, the distance between adjacent fastening areas in each case is preferred. or 2 mm or more, preferably 3 mm or more, more preferably 5 mm or more. Multiple fasteners The connection area can be arranged, for example, in a rectangular grid. This allows for particularly efficient production of wastewater foil.

[0016] The web-shaped elements are connected via a number of point-like fastening regions, preferably arranged in a grid pattern. This allows for connection while simultaneously securing a drainage space that generates drainage action. The connection can be made by welding, bonding, or other fixed types of connections. However, the removal of exudate should not be hindered by the connection, but rather aided. It should be. Ultrasonic welding is better than other methods for connecting web-like elements. This not only enables the efficient production of wastewater foil, but also allows for the production of particularly stable wastewater foil. Furthermore, its structural integrity is guaranteed even under mechanical load, for example, when applied within a lumen. It was found that, in particular, ultrasonic welding was effective for connecting particularly durable drainage foils. This enables manufacturing and achieves particularly advantageous adhesive strengths of 0.5N / 25.4mm or higher. It was discovered that...

[0017] Each fastening region has a cross-section extending perpendicular to the depth direction, with a length of 5 mm. 2 Below, especially 3mm 2 The following is particularly preferred: 2 mm 2 The following areas are present, and each fastening area or grid arrangement The distance between individual grid points in the fastening region formed is 2 mm or more, especially 3 mm or more, especially preferable. It was found that the length should preferably be 5 mm or more.

[0018] Whether fastening is performed by welding, adhesive bonding or other forms of connection, It is possible to form material bridges within the fastening region that connect the inner interface surfaces of the web-shaped elements to each other. Such material bridges promote the stability of the overall structure of the drainage foil, and ultrasonic welding is used. It was found that it could be manufactured with particular precision by the desired hair in the drainage space. To obtain a tubular action, the distance between the inner interface surfaces of the web-like elements should be 5 mm or less, preferably. The size should be 4 mm or less, and more preferably 2 mm or less.

[0019] In this case, the distance between the inner boundaries of the web-like elements is 0.05 mm or more, especially 0.1 mm or more. Particularly preferred is a drainage system that utilizes capillary action in the drainage space if the diameter is 0.3 mm or more. This ensures even distribution of exudate across the entire foil. It allows for the production of high-quality drainage foil. To achieve this, the connection between the first web-like element and the second web-like element is performed by ultrasonic welding. If so, it has been proven to be particularly preferable because the desired distance between the first and second web-like elements, particularly the distance between the inner boundary surface of the drainage space formed by the first web-like element and the inner boundary surface of the drainage space formed by the second web-like element, can be manufactured in a precise and quality-assured manner. The production of the drainage foil by ultrasonic welding has been found to enable a higher-quality drainage foil than when the distance between the inner boundary surfaces is only ensured by the depth of the funnel-shaped opening, because perforation is typically performed with only limited accuracy. Regarding the use of the drainage foil in wound care, it has been found to be particularly advantageous when the drainage foil has a basis weight (basis weight) in the range of 30 g / m to 90 g / m , preferably 40 g / m

[0020] to 80 g / m 2 , more preferably 50 g / m 2 to 70 g / m 2 2 2 2 The first web-like element and / or the second web-like element may include a plastic foil or may be a plastic foil, and the plastic foil preferably includes polyethylene, polypropylene, polyethylene terephthalate, polyurethane, polytetrafluoroethylene, polyhydroxybutyrate, polylactide and / or cellulose. This type of plastic foil has the advantage of effectively preventing the penetration of pathogens, such as bacteria, as well as tissue adhesion and internal growth. The plastic foil may particularly include polyethylene, preferably low-density polyethylene (LDPE).

[0021] ​​​​​​​​​​​​​​Web-like elements or plastics containing polyethylene, especially low-density polyethylene (LDPE) The buck foil is particularly advantageous with respect to the manufacture and use of the wastewater foil according to the present invention. It was found that the first web-like element and / or the second web-like element are polyethylene, poly Propylene, polyethylene terephthalate, polyurethane, polytetrafluoroethylene , polyhydroxybutyrate, polylactide and / or cellulose, preferably polyethylene Lens, more preferably low-density polyethylene (LDPE), may be included. The structure of the web-like element The fabric can be manufactured by a nonwoven fabric manufacturing process. In this case, synthetic and natural ( For example, silk, cotton fibers, as well as inorganic fibers (glass ceramics) or metals (silver fibers), It can be used to manufacture woven fabrics or structures.

[0022] Within the scope of the present invention, the web-like element comprises an antimicrobial layer or a bacteriostatic layer on one or both sides. Further considerations include: antibacterial or bacteriostatic effects, for example, PHMB, silver, chlorhexidine. This can be achieved by cidin, etc. The wastewater produced by the method according to the present invention In terms of avoiding the tendency for the elements to stick together, at least one web-like element is required. It may have a hydrophilic or hydrophobic finish. Furthermore, the application of swelling materials is also envisioned.

[0023] Regarding the use of drainage foil manufactured by the method according to the present invention in wound care, The liquid foil has a tensile strength of 7N / 25.4mm or higher, an elongation at break of 40% or higher, and a lifespan of 75m. 3 / m 2 / It is particularly advantageous if it has a porosity of 0.5N / 25.4mm or more, and / or a bond strength of 0.5N / 25.4mm or more. It has been found that this is the case. Therefore, while simultaneously guaranteeing the structural integrity of the drainage foil, This ensures effective exudate management.

[0024] The tensile strength is preferably measured according to DIN EN ISO 527. The drainage foil is, for example, It may have a tensile strength of 7 N / 25.4 mm or more, as measured according to DIN EN ISO 527. The elongation at break is preferably measured according to DIN EN ISO 527. The drainage foil is, for example, It can have a breaking elongation of 40% or more, as measured according to DIN EN ISO 527. Adhesive strength The degree is preferably measured based on Edana NWSP 401.0.R0. The drainage foil is, for example, , measured based on Edana NWSP 401.0.R0, or measured according to Edana NWSP 401.0.R0 It can have a bond strength of 0.5 N / 25.4 mm or more. The porosity is the total porosity of the drain foil. It is a measure of the ratio of cavity volume to total volume.

[0025] In the case of drainage foil manufactured by the method according to the present invention, a small amount of bodily fluids are allowed to pass through. At least one opening is particularly in the planar range of the first web-like element or the second web-like element. With respect to the plan view, it may have a circular, round, and / or elliptical shape. This allows for the effective passage of bodily fluids from the wound area into the open drainage space of the drainage foil.

[0026] In the case of a drainage foil manufactured by the method according to the present invention, at least one web-like element The material, preferably both web-like elements, preferably a number of openings arranged in a grid, It has openings arranged in a rectangular grid pattern, between adjacent openings or grid points of the web-like elements. If the distance is 15 mm or less, preferably 5 mm or less, and especially 3 mm or less, the drainage foil This allows for the desired removal of the drain foil while ensuring sufficient overall stability. .

[0027] Regarding the desired overall stability of the drainage foil produced by the method according to the present invention, The opening of one web-shaped element is located in the other web-shaped element. It is particularly advantageous if the projection is positioned along the depth direction between the openings. This has been proven. To prevent the collapse of the overall structure of the drainage foil, especially when negative pressure is applied, the web-like structure is necessary. At least one channel, preferably multiple such channels, that form a primary opening. However, if it extends in the depth direction over more than 50% of the total depth of the drainage space, it is particularly effective. It is known that...

[0028] To ensure the desired transparency of the web-like elements, each individual in a plane extending perpendicular to the depth direction The opening region of the opening facing the drainage space is 0.1 mm 2 The above, especially 0.5mm 2 In short, Preferably 1 mm 2 When perforation is performed in the manner described above, it is advantageous to know that It was. The perforation results in an opening area of ​​5 mm² for the drainage foil. 2 Below, especially 4mm 2 Below, special Preferably 3 mm 2 If performed as described below, backflow from the drainage space to the wound site may occur. This allows you to achieve the desired capillary action while avoiding unwanted effects.

[0029] As already explained, the openings of the channels that form the web-like elements are the perforations of the web-like elements. It is formed by pores. In relation to this, tissue or cells to the wound base or surrounding organs In order to obtain a smooth surface that can effectively suppress adhesion, the channel wall is made in the depth direction In a cross section extending parallel to the direction, the configuration is at least partially arc-shaped, and the web-like element It was found that continuous coupling to the boundary region is advantageous.

[0030] The method according to the present invention relates to adhesives, particularly adhesives, adhesive materials and / or hook fasteners, particularly 1 This may include attaching more than one barb to the drainage foil. Such adhesives, adhesive materials The material or hook-and-loop fastener is used to attach the manufactured drainage foil to other structures, such as body parts or surgical devices. Devices, absorbers, tubes, wires, stents, insertion aids and / or devices for negative pressure therapy This makes it possible to fix it in place. For example, this method uses adhesives, adhesive materials, and / or surfaces. This may include attaching fasteners to two opposing edges of the drainage foil. Drainage foils like these are then used for absorbents, tubes, wires, and other materials for negative pressure therapy, for example. Wrap around the structure selected from insert aids and devices, and two opposing edges The drain foil is secured to the structure by connecting it with adhesive, bonding material, or hook-and-loop fasteners. It can be used to determine.

[0031] Regarding the manufacturing technology, if process ii) is performed before or after process iii), and / or process iv) It has been found to be particularly advantageous when carried out after step iii) and before or after step ii). They are doing it.

[0032] The method according to the present invention further involves a three-dimensional, preferably tubular, structure derived from the drainage foil. This may also include forming a three-dimensional structure, such as a tubular structure. It can be used for more complex wounds, such as deep wounds, or in deeper areas of the body. Such three-dimensional structures, such as tubular structures, can be found within a lumen, for example, in the gastrointestinal tract or fistula. It can even be used in: The drainage foil is for, for example, intra-cavitary application, and / or It may be tubular in shape to accommodate a drainage tube.

[0033] Regarding manufacturing technology, such three-dimensional structures can be welded, particularly ultrasonic welding or laser welding. By bonding, by heat bonding, especially by UV or hot air, using adhesives, and / Or by deep drawing, particularly by deep drawing, the first web-like element connected in step iv) It has been found to be particularly advantageous when formed by a second web-like element. .

[0034] Manufacturing method for tubular drainage foil An object of the present invention is further to provide a method according to the present invention for manufacturing tubular drainage foil. This is achieved by the following method, which is characterized by including the following steps: a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably This is a double-walled drainage foil manufactured according to the method of the present invention for manufacturing a double-walled drainage foil. The process of providing the oil, b) The drainage foil has an overlapping area that can be connected to the connecting line. The process involves folding the foil over the drainage foil itself around the fold lines, especially the crease lines, and Furthermore, the drainage foil has a first edge and a second edge that extends substantially parallel to the first edge. The drainage foil has a first edge and a second edge that connect to a connecting line. Each of them has an overlapping area along the fold line or crease line The process of folding upwards or creating creases, c) A step of connecting drainage foils along the overlapping region to form a connecting line, d) A step to obtain a tubular drainage foil.

[0035] Furthermore, an object of the present invention is a method according to the present invention for manufacturing a tubular drainage foil. This is achieved by the following method, which includes the following steps: a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably This is a double-walled drainage foil manufactured according to the method of the present invention for manufacturing a double-walled drainage foil. The process of providing the oil, b) Between the first edge of the drainage foil and the elastic material, there is an overlap that can be connected to a connecting wire. A step of positioning the first edge of the drainage foil on the elastic material so that a region is formed, c) Along the overlapping region of the drainage foil and the first edge of the elastic material, A step of connecting the elastic material to form a connecting line, d) Fold the drainage foil onto the elastic material along the fold line, especially the crease line, and especially the crease line The overlapping region connected to the connecting line is not the second edge of the drainage foil, preferably the first edge. A step of forming between the second edge of the drainage foil, which extends substantially parallel to the part, and the elastic material, e) Along the overlapping region of the second edge of the drainage foil and the elastic material, A step of connecting the elastic material to form a connecting line, f) A step to obtain a tubular drainage foil.

[0036] Another object of the present invention is the method according to the present invention for manufacturing tubular drainage foils. This method is also achieved and includes the following steps. a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably This is a double-walled drainage foil manufactured according to the method of the present invention for manufacturing a double-walled drainage foil. The process of providing the oil, b) Wind the drainage foil around the winding shaft so that the drainage foil has overlapping areas. This is a process in which the overlapping region is formed by winding around the winding shaft, and contact The process involves being able to connect to a connecting wire and having at least two layers of drainage foil, c) Preferably by adhesive or connecting means, at least two layers within the overlapping region The first and second layers of the existing drainage foil are connected, preferably forming a connecting line. The process and d) A step to obtain a tubular drainage foil.

[0037] The above-described methods according to the present invention for manufacturing tubular drainage foils each include, for example, Furthermore, in the case of wounds located deep within the body, it enables uniform drainage performance even in complex wound areas. It was found that a tubular drainage foil could be efficiently provided. The following description is a tubular drainage foil. The present invention relates to all three of the above methods for manufacturing a tubular drainage foil. Each of the above-described methods for producing a tubular drainage foil may have the following characteristics:

[0038] Regarding manufacturing technology, this includes welding, especially ultrasonic welding or laser welding, and thermal bonding, especially UV or thermal bonding. Wind, adhesives, especially adhesives or hook-and-loop fasteners, and / or connecting means, especially clamps, are used to connect. It has been found that this is particularly advantageous when the process is carried out. In particular, drainage hoisting along the overlapping region The connection of the drainage foil, the overlapping region between the first edge of the drainage foil and the elastic material, and the drainage foil and elastic material. Connection with the elastic material, drainage along the overlapping region between the second edge of the drainage foil and the elastic material The connection between the foil and the elastic material, and the first of the drain foil, which has at least two layers in the overlapping region. The connection between the first and second layers is made by welding, especially ultrasonic welding or laser welding, especially UV or thermal welding. Thermal bonding by wind, adhesives, especially adhesives or hook-and-loop fasteners, and / or connections This can be done by welding, especially clamping, particularly ultrasonic welding or laser welding. ru.

[0039] The connecting means include, for example, clamps, cords, screws, joints, for example, elastic joints, or It may be a joint or annular coating aid having an elastic material. For example, a drainage foil is In particular, it is wound around a winding shaft that is wound around the drainage tube, and then a connecting means, for example It can be secured as a tubular drainage foil by a clamp or annular coating aid. The overlapping region, for example, the overlapping region between the first and second edges of a double-walled drainage foil, They can be connected by elastic joints. The elastic joint expands the tubular drainage foil. Increases tension.

[0040] The manufactured tubular drainage foil is connected by ultrasonic welding, preferably 0.1 Speeds in the range of up to 5.0 m / min, power output in the range of 50 to 500 watts, and / or 5N or When performed under pressures in the range of 100N, it possesses properties that are particularly advantageous for medical applications. The connection allows for a stable connecting wire that ensures high tensile strength even under mechanical load.

[0041] Connections, particularly overlaps, in the method according to the present invention for manufacturing tubular drainage foils Connection of the drainage foil along the region, overlapping region between the first edge of the drainage foil and the elastic material Connection between the drainage foil and the elastic material, overlapping area between the second edge of the drainage foil and the elastic material Connection between the drainage foil and the elastic material along the region, and / or at least two layers within the overlapping region. The connection between the first and second layers of the drainage foil present in the ultrasonic welding machine is such that the drainage foil is inside the ultrasonic welding machine. The process of arranging the wastewater foil and welding it in particular with a welding die, for example, an L-shaped welding die. The process may include forming a tubular drainage foil, and may have a corresponding welding die. It was discovered that tubular drainage foils can be manufactured efficiently and with high quality.

[0042] The connection is made by ultrasonic welding using a cutting wheel with a cutting edge radius of 0.2 mm or less. and / or cutting tools having a grinding angle of 15° or less opposite to the fold line, especially the crease line. Using a treadmill and / or grinding at an angle of 75° or less on the opposite side of the fold line, especially the crease line. When performed by ultrasonic welding using a cutting wheel having the following characteristics, the characteristics of the cut edge are Furthermore, it was found to be particularly suitable for the function of drainage foil. Therefore, drainage foil This prevents material residues that could impair the functionality from remaining at the cut edges. .

[0043] Welding, especially ultrasonic welding, is used for joining materials in overlapping areas, for example, double-wall drainage. The foil and / or elastic material is heated by a sonotrode that is vibrated by a generator. Thus, this can be done by melting. A cutting wheel can be used to create welded joints, for example, welding and cutting. A cutting wheel that can perform cutting and welding simultaneously can be used. The cutting wheel allows for the removal of excess material from the weld joint during the welding process. It is generated. Conventional cutting wheels can also be used to manufacture connecting wires. Ultrasonic welding is a type of ultrasonic welding, such as the DX1-TC 12 flatbed ultrasonic welding machine manufactured by Nucleus Rotosonic (trademark). Depending on the device, this can be performed at an ultrasonic frequency of approximately 35 kHz.

[0044] To provide the smoothest possible connection lines, especially the rough connection lines that result in chipping To prevent functional failure of the tube-shaped drainage foil, the connecting lines, fold lines, especially the crease lines The edge strip of the drainage foil, which is located on the opposite side, should be struck during or after connection, especially when... It can be removed by punching. Furthermore, punching removes any unwanted residual material. It can be used to remove.

[0045] This method involves connecting wires, such as welded joints, along the circumferential direction of the tubular drainage foil. The material is made to have a width of mm or less, preferably 1 mm or less, and more preferably 0.5 mm or less. When applied, it has been found to be particularly advantageous for the functionality of tubular drainage foils. Ta.

[0046] To prevent any functional defects in the product, the connection lines are as narrow as possible, especially at welded joints. It is particularly advantageous if this is provided. Furthermore, the thickness of the connecting wire is 1 mm or less, preferably 750 mm. When the diameter is less than or equal to μm, more preferably less than or equal to 450 μm, the radius of the tubular drainage foil The entire tubular structure extending along the direction or depth, particularly perpendicular to the tube axis. It was found to be particularly advantageous to guarantee functionality in the domain. Based on the method by which connections are made in the method of manufacturing liquid foil according to the present invention, the material is In the overlapping region, especially at the connecting line, it melts, and therefore, for example, the connection is welded. Especially when performed by ultrasonic welding, it forms material bridges.

[0047] According to the present invention, a method for improving the stability of a drainage foil is to use reinforcing elements, particularly reinforcing strips. Alternatively, the process may include attaching a reinforcing wheel to the area of ​​the connecting line, preferably connecting the reinforcing elements. Place it in the previous overlapping area and / or at least one end of the tube. The reinforcing strip is, for example, a drainage foil provided in a double layer in the area to be reinforced, This is provided by a reinforcing material, such as polyethylene foil, which is fixed to the area to be reinforced. It is possible. Foil, especially polyethylene foil, offers a particularly advantageous reinforcing effect as a reinforcing element. It was found that it possesses this characteristic.

[0048] For example, reinforcement elements are attached during connection by reinforcement elements placed in the overlapping region before connection. They may also be additively co-welded, and therefore the tear strength of the drainage foil, especially at the connecting lines. The reinforcing element increases the tear strength of the drainage foil. In addition to having these advantages, it can also be realized as, for example, an X-ray contrast-enhanced reinforcement element. It can also offer the advantage of targeting structures under the control of X-ray contrast. This allows for the precise placement of a tubular drainage foil on top.

[0049] The superior structural integrity of the tubular drainage foil is due to the reinforcement of the tubular drainage foil. Formed circumferentially at at least one tube end having a region, with less drainage foil Even when both are present in two layers, further improvement is possible. This is especially true for auxiliary Instruments, such as absorbers, tubes, wires, stents, or insertion aids, during, for example, surgery Alternatively, it is advantageous for applications where it is inserted into a tubular drainage foil during the manufacturing of wound care kits. ru.

[0050] The tube opening is further stabilized by the reinforcing region, and as a result, any desired auxiliary The material can be inserted into the tubular drainage foil without the risk of tearing the drainage foil. In terms of production technology, a portion of the tubular drainage foil is attached to the end of the tube, especially the tubular It was found that folding the edge region of the drainage foil is advantageous, and folding is particularly beneficial. In the reinforcement region, a tubular element that forms the inner interface of the tubular drainage foil is This is performed to form the outer interface of a tube-shaped drainage foil. This method further involves welding, heat welding, the folded portion of the tubular drainage foil. The process includes fixing, for example, in a point manner, by adhesive, and / or connecting means. "mu" refers to an overlapping area, particularly an overlapping area that can be connected to a connecting line, and / or a drainage foil. A reinforced area can be achieved by any shaping, positioning, bending, winding, or of the drain foil. It should be understood as meaning "folding".

[0051] The present invention provides a method for manufacturing a tubular drainage foil, which involves opening the tube at the end of the tube. Starting from the opening, along the longitudinal axis of the tube, and especially starting from the inner boundary and extending to the outer boundary Along the longitudinal tube axis in the direction of the interface, at least a portion of the tubular drainage foil The process includes winding up the tubular drainage foil. The tubular drainage foil is partially or completely wound up. It is possible. The application of the wound-up tubular drainage foil is possible when it is not wound up. It was found to be simpler compared to drainage foil, because the user can, for example, drainage foil The tubular drainage foil can be easily wound onto a structure such as a tube or probe, and the structure This is because it is covered with a tubular drainage foil.

[0052] In the sense that it is the smooth surface of the connecting line on the outside of the tubular drainage foil, connection Later, the sides of the connecting lines facing the fold lines, in particular, invert the tubular drainage foil. It has been found that rotating completely outward is advantageous. Outer connection The smooth surface of the wire ensures the high functionality of the tubular drainage foil in the area of ​​the connecting wire. do.

[0053] In order to achieve particularly good drainage efficiency using the generated tubular drainage foil, In step a) of the method according to the present invention for generating a tube-shaped drainage foil, the drainage provided The liquid foil is produced according to the method according to the present invention for producing a double-walled drain foil. It may also be a liquid foil. The structure of the generated drainage foil is aided by the fastening region. This prevents the collapse of the open drainage space between the two layers. Therefore, a tubular drainage hoist The drainage foil ensures a suction distribution across the entire area, including the edges of the foil, and effectively drains the exudate. Remove it.

[0054] Tubular drainage foil According to the present invention, an object of the present invention is further a first tubular element that forms an outer interface A first element and a second tubular element that forms an inner interface facing the opposite side of the outer interface. A tubular drainage foil comprising the second tubular element, wherein at least one The fastening region of the first tubular element is connected to the first tubular element and The second tubular element each has at least one opening that allows for the passage of bodily fluids. A tube is provided, wherein a drainage space is formed between the outer interface and the inner interface. This is achieved by a drainage foil. In the tubular drainage foil according to the present invention, the capillary action is due to the open drainage space. This is achieved between two tubular elements, and this capillary action allows body fluids, especially exudate, to flow through the tube. This allows for leakage or suction throughout the entire tubular structure. Even for complex wounds, such as deep wounds inside the body, especially when applied intraluminally, Effective exudate management can be ensured by the tubular drainage foil according to the present invention. The tubular drainage foil according to the present invention can be used on the surface of a wound. Furthermore, for example, to effectively absorb bodily fluids such as exudate, they are positioned between organ structures. It has the advantage of being able to do both.

[0055] The first tubular element and / or the second tubular element include plastic foil. But it may also be plastic foil, and plastic foil is preferred. Polyethylene, polypropylene, polyethylene terephthalate, polyurethane, poly Tetrafluoroethylene, polyhydroxybutyrate, polylactide and / or cellulose This type of plastic foil contains a barrier against the penetration of pathogens, such as bacteria, and also prevents the formation of a complex network of pathogens. It has the advantage of effectively preventing weave adhesion and internal growth. Plastic foil Polyethylene, preferably low-density polyethylene (LDPE), may be included in particular. Tubular elements or plastics containing ethylene, especially low-density polyethylene (LDPE). The foil is particularly advantageous for the manufacture and use of the tubular drainage foil according to the present invention. The first tubular element and / or the second tubular element are made of polyethylene. Polypropylene, polyethylene terephthalate, polyurethane, polytetrafluoroethylene Tylene, polyhydroxybutyrate, polylactide and / or cellulose, preferably poly It may also contain polyethylene, more preferably low-density polyethylene (LDPE).

[0056] Within the scope of the present invention, the tubular element comprises an antimicrobial layer or a bacteriostatic layer on one or both sides. It is further anticipated that antibacterial or bacteriostatic effects may be found in, for example, PHMB, silver, and chlorhexidine. This can be achieved using substances such as xidine. To avoid the tendency for the drainage foils manufactured by the method according to the present invention to stick together Furthermore, at least one tubular element may have a hydrophilic or hydrophobic finish. Furthermore, the application of swellable materials is also envisioned.

[0057] In terms of the structural integrity of the tubular drainage foil, the first tubular element and The second tubular element has multiple fastening regions, preferably formed in a grid arrangement. It is known that connection is preferable in the fastening region. The distance between adjacent fastening regions is Preferably 2 mm or more, preferably 3 mm or more, more preferably 5 mm or more, This is an open drainage space formed between the first tubular element and the second tubular element. This is to ensure excellent capillary action. Multiple fastening regions are arranged, for example, in a rectangular grid pattern. It can be placed in [location].

[0058] Furthermore, each fastening area is 5 mm 2 Below, especially 3mm 2 The following is particularly desirable: 2 mm 2 The following regions, in cross-sections extending perpendicular to the radial or depth direction, are effective for capillary action. It has proven to be convenient in terms of use. The depth direction extends particularly perpendicular to the interface. This is the direction of expansion. The radial direction extends particularly perpendicular to the longitudinal axis of the tube.

[0059] Fastening in the fastening area is by welding, e.g., ultrasonic welding, adhesive bonding or other types of connection. Whether or not it is done by fastening, a material bridge is formed to connect the tubular elements to each other. It can be formed within the region. This promotes the overall structural stability of the tubular drainage foil. Such material bridges can be manufactured with particular precision by ultrasonic welding. It was discovered that, in order to obtain the desired capillary action in the drainage space, an open drainage space is defined. The distance between the inner interface surfaces of the tubular elements is 5 mm or less, preferably 4 mm or less, and particularly preferred The size is less than 2 mm.

[0060] In this case, the distance between the inner interface surfaces of the tubular elements defining the drainage space is 0.05 mm or less. In particular, if the diameter is 0.1 mm or more, and especially preferably 0.3 mm or more, then the capillaries in the drainage space By utilizing tubular action, it is possible to ensure the distribution of exudate throughout the entire tubular drainage foil. can. The tubular drainage foil defines a drainage space between the inner interfaces of the tubular elements. Preferably at least 50% of the area of ​​the drainage foil, preferably less of the area of ​​the drainage foil Both have a distance that defines 70% of the area.

[0061] The tubular drainage foil according to the present invention comprises a first tubular element and a second tubular element A connecting wire, preferably, that connects the element and / or the first and / or second tubular element to the elastic material. The connecting wire may have welded joints. The connecting wire may be welded, for example, by ultrasonic welding or Laser welding, thermal bonding, especially thermal bonding by UV or hot air, adhesives, especially adhesives or faceplates This can be provided by fasteners and / or, in particular, by clamps. For example, the connecting wire is positioned such that the first edge of the drainage foil is positioned at the second edge of the drainage foil, and the second The edges are formed by connecting them to each other, for example by ultrasonic welding, and as a result As a result, a connecting line, such as a welded joint, is formed between the first edge and the second edge.

[0062] The connecting lines, such as welded seams, are 2 mm or less along the circumferential direction of the tubular drainage foil. Preferably, when the width is 1 mm or less, more preferably 0.5 mm or less, it is tubular. It was found to be particularly advantageous for the functionality of the drainage foil. Furthermore, the connecting wire is tubing Along the radial or depth direction of the oval drainage foil, 1 mm or less, preferably 750 When the thickness is μm or less, more preferably 450 μm or less, the entire area of ​​the tubular structure It has been proven that guaranteeing functionality in this regard is particularly advantageous.

[0063] Regarding the use of tubular drainage foil in wound care, the drainage foil is 30g / m². 2 No Up to 90g / m 2 Preferably 40 g / m 2 ~80g / m 2 , more preferably 50 g / m2 to 7 It has been found to be particularly advantageous when the basis weight (basic weight) is in the range of 0 g / m2. The liquid foil has a tensile strength of 7N / 25.4mm or higher, an elongation at break of 40% or higher, and a length of 75m. 3 / m 2 / min If the porosity is greater than or equal to the above, and / or the bonding strength is greater than or equal to 0.5 N / 25.4 mm, then the drainage foil This ensures effective drainage management while simultaneously maintaining structural integrity. The tensile strength is preferably measured according to DIN EN ISO 527.

[0064] The tubular drainage foil, for example, measures 7N / 25.4 according to DIN EN ISO 527. It can have a tensile strength of mm or more. The elongation at break is preferably according to DIN EN ISO 527. Therefore, it is measured. The tubular drainage foil is measured, for example, according to DIN EN ISO 527. It can have a break elongation of 40% or more. The adhesive strength is preferably Edana NWSP Measured according to 401.0.R0. The tubular drainage foil is, for example, Edana NWSP 401. 0.5N, measured based on 0.R0 or according to Edana NWSP 401.0.R0. / May have a bonding strength of 25.4 mm or more. The porosity is the number of cavities relative to the total volume of the drainage foil. It is a measure of the ratio of the product.

[0065] The tubular drainage foil according to the present invention has a tube opening at at least one end of the tube. It may have a mouth. For example, it may have a tube opening at one end of the tube. A tubular drainage foil made of continuous material can be provided at the other end of the tubular structure. For example, forming web-like elements and / or tube ends connected by connecting wires. A tubular element can be provided. Alternatively, a tubular drainage foil with tube openings at both ends of the tube can be provided. It can be used for several purposes, for example, for draining fluid in the case of deep wounds in the body. Therefore, the tubular drainage foil has a tube opening at one end of the tube and another end of the tube. It has been proven particularly advantageous when the tube end does not have a tube opening.

[0066] According to the present invention, the tubular drainage foil has reinforcing elements, particularly reinforcing strips or reinforcements. The foil may be located along at least one tube end and / or connecting wire. The reinforcing strip is, for example, made of material, such as double-walled drainage foil, in particular double-walled drainage foil In the region where the drainage foil manufactured by the method according to the present invention is present in two layers. Area, and / or reinforcing material, for example polyethylene foil, is the first tubular element and / or This may be a region fixed to two tubular elements. Foil, especially polyethylene foil. It was found to have a particularly advantageous reinforcing effect as a reinforcing element. (Tubular drainage hose) The structural integrity of the unit is such that the connecting lines and / or at least one tube opening require reinforcement. It is especially enhanced when the element is present / has the element.

[0067] The excellent structural integrity of the tubular drainage foil according to the present invention is due to the tubular drainage foil In a case where the tube has a reinforcing region at at least one end where the tube is present in at least two layers In total, it increases further. This is especially true for auxiliary devices, such as absorbers, tubes, wires, and ste This is advantageous for applications where a chute or insertion aid is inserted into a tubular drainage foil. The opening is further stabilized by the reinforcing region, and as a result, any desired auxiliary device can be removed. It can be inserted into a tubular drainage foil without the risk of tearing the liquid foil. Technically, it is formed by bending a portion of the tubular drainage foil at the end of the tube. It has been found that forming a reinforced region in the morphology of the two-layer edge is advantageous, and in particular, tube The outer interface of the drainage foil, particularly the outer interface of the reinforcing region of the tubular drainage foil, The folding is performed so that a second tubular element forming the side interface is formed within the reinforcement region. The folded ends can be secured at points.

[0068] According to the present invention, the outer interface of the tubular drainage foil, the inner interface of the tubular drainage foil Tubular drainage contained in the side interface and / or the inner interface of the tubular drainage foil The inner lumen of the wheel may be provided with a sliding aid and / or an insertion aid. To further enhance ease of use and simplicity of application through auxiliary devices and / or insertion aids. This is possible. For example, the outer and / or inner interface of a tubular drainage foil can be inserted. To facilitate this, low friction surfaces, especially anti-stick coatings and / or microrough surfaces This can be configured in particular by the outer and / or inner boundary of the tubular drainage foil. The surface is made of silicone, polytetrafluoroethylene (PTFE), and to facilitate insertion. It may contain or be coated with moisture.

[0069] Examples of sliding aids that significantly increase sliding ability include aqueous lubricants and glycerol-based lubricants. Agents, polymer gels, especially anti-allergic polymer gels, endoscopic lubricants, especially endoscopic sliding gels A substance used as a lubricant, and / or an aqueous solution, particularly a sodium chloride solution. However, if it can dissolve without residue, especially in aqueous solution, the substance residue will not remain on the product. It is particularly advantageous in preventing retention. Insertion aids including fabric and / or plastic. The device is particularly suitable as an insertion aid. The insertion aid is suitable for low-friction surfaces, especially anti-stinging surfaces. It may include a black coating and / or a microrough surface. For example, the insertion aid is It may also include fabric and / or plastic, and the fabric or plastic may contain silicone. Polytetrafluoroethylene (PTFE) and / or water, or silicone, It is coated with tetrafluoroethylene (PTFE).

[0070] The insertion aid is a tubular insertion aid placed inside the inner lumen of the tubular drainage foil. A device, for example, a tubular insertion aid having a tube opening or two tube openings. This may also be the case. In particular, the insertion aid has a tube opening at one end of the tube, and the other One end of the tube may have a closed end. A tubular insertion aid. The tubular insertion aid is configured to have a predetermined break point at the closed end of the tube. This is possible. The tubular drainage foil is provided in a single-lumen or multi-lumen configuration. It is possible.

[0071] Tubular drainage foils have numerous applications, such as intraluminal use, gynecology, or urology. It is particularly advantageous for use in the following applications, as well as in thoracic, visceral, and / or hip surgery. Thus, the tubular drainage foil is 0.5 cm to 40 cm, preferably 2 cm to 3 cm long. The length can be 0 cm, more preferably in the range of 5 cm to 20 cm. However, longer or shorter tubular drainage foils can also be provided. For example, A tubular drainage foil with a length of 10 cm or more, or 20 cm or more, is used in the gastrointestinal tract. Suitable for use within tubular lumen and fistulas. For applications in various wound cavities, length It can be fitted into the wound cavity, for example, in the form of a tube with a length of 10 cm or less. The drainage foil is for wound cavities or has a length of 5 cm or less, for example, 2 cm or less. It can be used for smaller wound cavities.

[0072] Furthermore, the tubular drainage foil is 1 mm to 60 mm in diameter, preferably 2 mm to 50 m in diameter. When the outer diameter is in the range of m, more preferably 4 mm to 30 mm, a tubular drainage hole Il is particularly suitable for a wide range of applications in terms of effective wound management. However, A tubular drainage foil with a larger or smaller outer diameter can also be provided. In the case of wounds and / or deep tissues of the body, such as the pancreas, in gynecology or urology For applications involving drainage, and for applications within a tubular cavity, a tubular drainage foil with a small outer diameter, for example, A tubular drainage foil with an outer diameter of 5 mm or less, especially 4 mm or less, is particularly suitable. .

[0073] The tubular drainage foil according to the present invention is suitable even when the outer diameter of the drainage foil is small. It has the advantage of ensuring uniform drainage performance and preventing blockage of drainage flow by tissue. Therefore, even with a very small outer diameter, the tubular drainage foil can handle liquid. It enables the body's active drainage. In the case of invasive surgery, for example, in the case of hip joint surgery, especially with large incisions. In the case of a wound area, a tubular shape with a larger outer diameter, for example, an outer diameter of 6 mm or more. Drainage foil can also be used. Depending on the accessibility and size of the wound area, A tubular drainage foil having an appropriate length and outer diameter can be provided.

[0074] Wound care kit The object of the present invention is further achieved by the wound care kit according to the present invention. The wound care kit is for manufacturing the tubular drainage foil according to the present invention. A tubular drainage foil manufactured by the method, or a tubular drainage foil according to the present invention A small number of materials selected from, for example, absorbents, tubes, wires, stents, and insertion aids. It includes at least one further component. In the sense of particularly simple handling of wound care kits, at least one further configuration At least a portion of the element is an inner interface of a tubular drainage foil It has been proven advantageous when placed in the side lumen, especially for efficient negative pressure therapy. Therefore, a wound care kit may include, for example, a tubular drainage foil and a drainage tube. Often, a portion of the drainage tube is placed inside the inner lumen of a tubular drainage foil. The liquid tube may be connected to a negative pressure source. At least one further component may be partially It can be placed either in or entirely within a tubular drainage foil.

[0075] In a particularly preferred embodiment of the present invention, the absorbent is a sponge, foam, and especially polyurethane It is made of cellulose or polyvinyl alcohol foam or gauze. Having such an absorbent material This wound care kit enables efficient suction of fluid from the body, especially from the wound area. It was discovered that the absorbent is located inside the tubular drainage foil, which is formed by an inner interface. When placed within the side lumen, tissue adhesion to the absorbent is prevented. Therefore, the liquid, It can be efficiently and non-traumatically aspirated from the wound area.

[0076] In particular, in terms of advantageous suction efficiency, the tubes included in the wound care kit are drainage tubes. It has been proven that this is preferable. The drainage tube can be single-lumen or multi-lumen. It can be made into a cavity. A wound care kit with a drainage tube can draw fluid from the wound area. It enables continuous suction and also allows for the suction of large volumes of liquid. The oval drainage foil can be made in any size, in particular any outer diameter, any length and any shape. Since they may be provided, wound care kits may include tubes and / or complex geometric shapes. For example, it can be used with a tube having a geometric shape with multiple lumens.

[0077] The wound care kit according to the present invention has a length of 0.5 cm to 250 cm, preferably 10 cm to It can have a length of up to 200 cm. The length of the wound care kit varies depending on its intended use. It can be optimized for, for example, at least 10cm or at least 20cm A wound care kit of a certain length for intraluminal application in the gastrointestinal tract, or in a fistula. It can be provided for application. For application in wound cavities, the lengths are as follows: It can be adapted to the size or depth of the wound cavity; for example, a wound care kit can be adapted to the size or depth of the wound cavity. Depending on the circumstances, it can have a length of less than 10 cm, less than 5 cm, or less than 2 cm. .

[0078] Medical Uses and Methods for Wound Care The present invention further includes a tubular drainage foil for use in wound care, and, for example, the method according to the present invention for draining a wound and / or caring for a wound. The present invention relates to a wound care kit for use. A tubular drainage foil or wound care kit is preferably used, for example, during surgery and / Alternatively, it is used for postoperative drainage. The tubular drainage foil according to the present invention or the present invention The wound care kit is preferably used, for example, during surgery to drain bodily fluids from the wound area. It is used for [purpose].

[0079] The tubular drainage foil and wound care kit according to the present invention are used to drain wounds This invention enables the easy and reliable aspiration of liquids. The drainage foil and the wound care kit according to the present invention are for use in, for example, intraluminal wounds, such as in the gastrointestinal tract, and in the gynecological tract. Human and urological surgery, surgical procedures such as thoracic, visceral and hip surgeries, and negative pressure It can be used in therapy. The tubular drainage foil or wound care kit is It can be used for drainage, especially within the scope of surgery. Therefore, blood, wounds Applying secretions and / or tissue fluid, or drainage, can prevent accumulation within the wound cavity. It can accumulate, usually during surgical intervention. In this way, it significantly accelerates the healing process. It is possible.

[0080] The tubular drainage foil or wound care kit according to the present invention provides negative pressure for wound care. It can be used particularly advantageously in combination with therapy. In this case, the tube according to the present invention The shape of the drainage foil or wound care kit is used for wounds, especially the wound base, and wound fillers or exudates. It is used as a direct interface with the liquid removal region, for example, the drainage tube. Particularly advantageous is The tubular drainage foil or wound care kit according to the present invention provides internal tissue drainage for wound odors. It can be used for this purpose. In this case, the tubular drainage foil is suitable for the wound. Used, the tubular drainage foil prevents adhesion or friction between the tissue and the foil. It provides drainage functionality and a very smooth surface.

[0081] The tubular drainage foil or wound care kit according to the present invention is anatomically pre-formed It is possible to do so, but it can also be configured to be adjustable to suit specific situations. Cut. When used in combination with negative pressure therapy, the tubular drainage foil according to the present invention is used with a gar It can be filled with a filling medium such as gel or foam, or a wound care kit and / or A drainage tube can be inserted to drain exudate or for wound drainage. The tube used may be routed from inside the body, for example, from the abdominal cavity, and connected to a negative pressure source. The negative pressure source is provided by a pump, or in a hospital, by central home care. . Using a negative pressure source, the exudate is then drained using the tubular drainage foil or wound care according to the present invention. The kit allows for removal from the wound, resulting in better exudate management. .

[0082] For medical applications of the tubular drainage foil or wound care kit according to the present invention, the following applies: You can gain advantages. - Openings that allow the passage of bodily fluids help remove exudate and prevent it from entering the wound space. It prevents backflow (capillary action). - The tubular drainage foil is used to drain tissue or cells from the wound base or surrounding tissue. To prevent adhesion. - A tubular drainage foil or wound care kit can drain wounds without impairing their drainage function. It can be adapted to any size or structure of the area, and therefore can be used to care for complex wounds. This also makes it possible to do so.

[0083] The present invention also relates to a tubular drainage foil or a wound care kit according to the present invention. This invention relates to a method for wound care that is characterized by bringing a device into contact with the patient's wound. In particular, tubular drainage foils or wound care kits are suitable for draining body fluids, such as exudate or Blood can drain from the wound into a tubular drainage foil or wound care kit. The tubular drainage foil and the present invention The wound care kit by Ming effectively drains bodily fluids from wounds, especially blood or wound fluid. This enables suction. The method according to the present invention for wound care allows bodily fluids to be effectively aspirated. This has the advantage of preventing the penetration of bacteria or other pathogens into the wound area.

[0084] Methods for wound care may also be methods for draining the wound. The method for doing so applies to all medical fields and all areas of the body, for example, intraluminal application, women's health. Uses in urology or other medical fields, as well as in thoracic, visceral, and / or hip surgery. This includes, as explained above, the length of the tubular drainage foil or wound care kit. The size and / or outer diameter can be adapted to the requirements of each wound area, for example, small The outer diameter can be used for intraluminal application in the gastrointestinal tract. The present invention provides a method in which a tubular drainage or wound care kit is used on the body, wounds Alternatively, it can be adapted according to the shape of each region of the required drainage area, so any body It can be used for the area and any wounds.

[0085] According to the present invention, any shape, any size, and any wound or any medical application To provide a tubular drainage foil or wound care kit having any suitable outer diameter. And is provided. For example, a tubular drainage foil is provided for example in the gastrointestinal tract or fistula. For application, the drainage foil may be round or cylindrical, or a flat tubular shape. , in particular, it can be configured as a flat drainage foil. Furthermore, a tubular drainage foil is optional. It can be provided in these dimensions.

[0086] The method according to the present invention for wound care involves, for example, an absorbent material such as polyurethane foam. Compared to the body, the tubular drainage foil adheres less to tissue, resulting in damage. And the risk of bleeding is reduced, offering advantages over other methods of wound care. Therefore, the method according to the present invention is applicable to highly sensitive body parts, such as blood vessels or It is also suitable for areas of tissue before injury, and for patients at high risk of bleeding. A drainage foil or wound care kit can be used in the wound area. It can be used for a wider range of applications to meet anatomical and drainage requirements. [Brief explanation of the drawing]

[0087] The present invention is described below with reference to the drawings, which are essential to the present invention and are described in the specification. All details that are not further emphasized are explicitly mentioned. [Figure 1] This is a schematic diagram of an ultrasonic welding apparatus. [Figure 2] This is a schematic diagram of a drilling device. [Figure 3]It is a schematic diagram of a device for inverting a tubular drain foil. [Figure 4] It is a schematic diagram of a creasing technique or a winding technique, in which the drain foil is bent, particularly creased, around a fold line, especially a crease line, or wound around a take-up shaft so that the drain foil has an overlapping area where it can be connected to a connection line. [Figure 5] It is a schematic diagram of a self-adhesive drain foil that can be used as a tubular drain foil by winding or folding. [Figure 6] It is a schematic diagram of a self-adhesive drain foil that can be used as a tubular drain foil by, for example, winding or folding around a drain tube. [Figure 7] It is a schematic diagram of a connection line, particularly a welded joint. [Figure 8] It is a schematic diagram of attaching a reinforcing element to a drain foil. [Figure 9] It is a schematic diagram of an insertion aid. [Figure 10] It is a schematic diagram of the process of winding up a tubular drain foil and the wound-up tubular drain foil. [Figure 11] It is a schematic diagram of a tubular drain foil having an elastic material. [Figure 12] It is a schematic diagram of a tubular drain foil having an edge reinforced by folding. [Figure 13] It is a schematic diagram of a tubular drain foil. [Figure 14] It is a schematic diagram of a tubular drain foil provided with a tube. [Figure 15] It is a schematic diagram of a tubular drain foil provided with a tube and an absorber. [Figure 16] It is a schematic diagram of a tubular drain foil provided with a tube.

Embodiments for Carrying Out the Invention

[0088] The ultrasonic welding apparatus shown in Figure 1 is a drainage foil 3 according to the present invention, particularly a tubular drainage foil. It can be used to manufacture L3a. For example, an ultrasonic welding device can simultaneously punch out It can be used to manufacture a tubular drainage foil 3a by cutting and welding, In this case, as a result of ultrasonic welding, overlapping materials are joined at the overlapping region, forming a connecting line. Forming 11, and simultaneously removing the edge strip of residual material. The double-walled drainage foil 3b is based It is inserted into section 4 in a folded state and secured there.

[0089] As for the ultrasonic welding die 1, for example, an L-shaped ultrasonic welding die 1 is positioned above the base 4. It is located within the bracket 2. The generator provides the necessary voltage to the welding die 1. The welding die 1 moves downward and welds the contour of the tubular drainage foil 3a. The welding operation When finished, bracket 2 returns to its starting position. Next, the tubular drainage foil 3a is removed. It is possible. The figure on the left shows a plan view of the ultrasonic welding apparatus, and the figure on the right shows a side view. .

[0090] The perforation device shown in Figure 2 can be used to manufacture the drainage foil 3 according to the present invention. The double-walled drainage foil 3b provided is folded on one side onto the lower die half of the punching tool. It is folded and inserted. A heated, integrated cutting tool is positioned in the lower die half of the punching tool. It is being done. The punching operation is started by lowering the upper half of the die. The same operation is used to start the punching process. The hot and sharp cutting element 5 separates the cutting edge by welding the drainage wheel 3b to the cutting edge, and the connection As a result, a tubular drainage foil 3a having welded seams 6 is obtained. The foil residue 7 is beaten It is removed by extraction. The die is then moved upward by the upper half of the die. It can be opened and the tubular drainage foil 3a can be removed.

[0091] The apparatus shown in Figure 3 can be used to invert the tubular drainage foil 3a. First, the tubular drainage foil 3a is made, for example, in an overlapping area, by one of the methods described above. It is manufactured by welding to form a connecting line 11. For use in wound areas, in particular To prevent tissue adhesion, the connecting wire 11 is smooth on the outside of the tubular drainage foil 3a. It has been found to be particularly advantageous when there is a surface. A smooth surface is produced on the welded joint 6. To achieve this, the tubular drainage foil 3a can be inverted from the inside out. At that time, the side 10 of the connecting line 11, which was facing away from the fold line, After inversion, the fold line, and especially the side surface 12 of the connecting line 11 facing the fold line, are positioned accordingly. The tubular drainage foil 3a is flipped over or inverted using the illustrated apparatus. The sleeve 9 is pulled onto the upper movable ram 8. The sleeve 9 moves further onto the movable ram 8 and hardens. The tubular drainage foil 3a is rotated with the help of the quality counterram 13.

[0092] The folding or winding technique shown in Figure 4 involves winding the drainage foil 3 in a planar manner around the winding shaft 27. For example, it can be used to position it on the tip of tube 16 or to bend it on tube 16. It can be used. For example, the drainage foil 3 is formed by winding the drainage foil 3 around the winding shaft 27. It is connectable to the connecting wire 11, and the drain foil 3 has overlapping regions where at least two layers exist. It can be wound around the winding shaft 27 so as to have an overlapping region. To obtain the tubular drainage foil 3a, for example, it can be connected or fixed by means of connecting means such as an adhesive 14, or a clamp, a joint , or an annular application aid. .

[0093] The self-adhesive drainage foil 3 shown in FIG. 5 can be fixed to any desired structure, for example, a body part, an external surgical device, an absorber, a tube, a wire, a stent, an insertion aid 22, and / or a device for negative pressure therapy . Using an adhesive 14 attached to the drainage foil 3, particularly an adhesive, an adhesive material, and / or a surface fastener 15 such as one or more spines , the drainage foil 3 can be wound or folded around other structures and fixed around the structure, particularly in a tubular shape. Such a drainage foil 3 can be used as a self-adhesive tubular drainage foil 3a and has the advantage that it can be adapted in situ to structural requirements, for example, the size of a wound cavity. [[ID=2,6]]

[0094] While winding or folding the drainage foil 3 around a corresponding structure, for example, around a drainage tube, the adhesive or the adhesive part of the drainage foil 3 can be fixed to another part of the drainage foil 3. If the drainage foil 3 fixed to the structure in this way has to withstand particularly high mechanical loads, the drainage foil 3 can be additionally fixed as required by joints. According to the invention, the drainage foil 3 can comprise one or more adhesive parts, and particularly the adhesive 14 can be attached to one part, or two complementary components of the adhesive 14, for example, surface fasteners 15a, 15b, can be attached to two or more parts that can thereby be attached to each other. ​

[0095] Figure 6 shows a self-adhesive drainage foil 3 having an adhesive 14, the drainage foil connected to tube 1 6 or wrapped around the probe, and thus used as a tubular drainage foil 3a obtain. Figure 7 shows the connecting line 11, particularly between the first element 17 and the second element 18, for example, the first web element The solvent between the element and the second web-like element or between the first tubular element and the second tubular element A schematic diagram of the joint 6 is shown. Detail A shows the connection, particularly the welding work, which affects the wheel thickness. Tapering is shown. The wheel is compressed in the area of ​​the connecting line 11, especially at the welded seam 6. By compressing the double-walled drainage foil 3b in the region of line 11 and the cutting foil angle, the connecting line 11 A shape-dependent angle α is generated between the ridge line and the outer interface surface 28 of the tubular drainage foil 3a. It can be done.

[0096] The connecting lines 11 of the perforated drainage foil 3, for example, the welded seams 6, contribute to the stability of the product in terms of the foil. The critical point can be represented. The tubular drainage foil 3a according to the present invention has particularly excellent strength In order to equip the open drainage space 20 with the characteristics, in particular, the connecting lines 11 such as welded joints 6 To improve strength, it can be reinforced with additional materials. Figure 8 shows, for example, a cut foil. Reinforcement element 29 to drainage wheel 3, comprising first element 17 and second element 18, by welding to 19 A schematic diagram of the installation is shown. In particular, non-perforated polyethylene foil and additional material It can be used as a reinforcing element 29. An additional foil layer, for example, an additional In particular, welding non-perforated polyethylene foil to drainage foil 3 is particularly effective. To enable this, the foil layer may be made of polyethylene.

[0097] As a result of additionally welded, especially non-perforated polyethylene foil, more Some material flows into the holes of the drainage foil 3 in the area of ​​the connecting line 11 during welding, and the holes This stabilizes the structure, resulting in superior strength. Such reinforcing elements 29, for example polyethylene foil, significantly reduce the tensile load at the welded joint 6. To increase the amount of reinforcing element 29, add reinforcing elements, such as additional polyethylene. Place the foil on top of the drainage foil 3, and then fold it. When connecting, for example, ultrasonic welding Therefore, the reinforcing element 29 is connected to the drainage foil 3 in the overlapping region, and as a result the connecting line 11, special A stable welded joint 6 is then created. Next, the remaining material 21 of the reinforcing element 29, for example, the remaining The polyethylene foil is applied to the area of ​​the connecting line 11, particularly the area of ​​the welded joint 6, for example, by hand Alternatively, it can be removed mechanically. The reinforcing element 29, for example, polyethylene foil, is connected to the connecting wire. 11. It can be provided so as to be present only at the welded joints 6.

[0098] The tubular drainage foil 3a with the insertion aid 22 shown in Figure 9 allows for the use of the drainage foil 3. To simplify. As the insertion aid 22, a fabric or plastic having low friction against plastic. Various materials can be used, such as plastics, micro-rough fabrics, etc. The auxiliary device 22 can be applied to the tube 16 (left side in Figure 9), or inside the drainage foil 3a. It can be directly integrated with the lumen of the tubular drainage foil 3a (right side of Figure 9) It can also be included in [the group / context]. For example, the insertion aid 22 is for a tube, such as a drainage tube or a probe (left side of Figure 9). It can be placed on top. The tubular drainage foil 3a is, for example, a tubular tube 16. When covered with the drainage foil 3a, it may have a closed tube end.

[0099] When a predetermined break point 23 is provided at such a closed tube end, several applications It has been found to be advantageous for. Due to the predetermined fracture point 23, the insertion aid 22 is forced It can be removed by adding [something]. The insertion aid 22 is also tubular in shape, having two open tube ends (right side in Figure 9). It is also acceptable. Regarding the manufacturing technology, the insertion aid 22 is used during the manufacturing of the tubular drainage foil 3a. It was found to be particularly advantageous when already incorporated into a tubular drainage foil 3a. For easy handling of the insertion aid 22, the insertion aid 22 is connected to the tubular drainage foil 3a. It is also long, and the insertion aid 22 protrudes from the tube end of the tubular drainage foil 3a, making it grippable. It has been found that this is preferable. A tubular drainage foil 3a or tubular After the tube covered with the drainage foil 3a is inserted into the wound area, the insertion aid 22 is used. It can be removed by simply pulling it out.

[0100] Figure 10 shows the process of obtaining a rolled-up tubular drainage foil 3a. This shows the process of winding up the foil 3a. Partially or completely wound up, the tubular discharge Liquid foil 3a can be efficiently packaged in an environmentally friendly way, especially by saving material. It has the advantage of allowing the user to place the tubular drainage foil 3a on a structure, for example , roll the tube 16, especially the drainage tube or probe, without forcing it, tubular It has the advantage of being able to cover the structure with drainage foil 3a.

[0101] In order to wind up the tubular drainage foil 3a, a part of the tubular drainage foil 3a and The complete tubular drainage foil 3a starts from the tube opening at the end of the tube, and is long It can be wound up along the tube axis 30 in the direction of the hand. In particular, a tubular drainage foil 3a starts from the inner interface in the direction of the outer interface 28 and follows the longitudinal tube axis 30 It can be rolled up to roll up part or all of the tubular drainage foil 3a. .

[0102] Figure 11 shows a tubular drainage foil 3a having an elastic material. 3a has, for example, an elastic foil 24 or an elastic joint 25, in particular a joint made of an elastic material. It is possible. By integrating the elastic material into the tubular drainage foil 3a, particularly the tubular drainage The double-walled drainage foil 3b used to form foil 3a is made from a slightly expandable material. In this case, the elasticity of the tubular drainage foil 3a can be increased. Drainage foil 3b and elasticity By connecting the double-walled drainage foil 3b and the elastic material along the overlapping region with the material, A tubular drainage foil 3a having an elastic material can be formed. By integrating strips or elastic joints 25 of the 24, a tubular drainage hole is formed. Il 3a can be expanded particularly well, and as a result, it can be easily applied to drainage tubes, for example. Yes.

[0103] Figure 12 is a side view of a tubular drainage foil 3a whose edges are reinforced by folding. This shows that the tubular drainage foil 3a has one or both ends of the tube in the circumferential direction. It can be formed by providing a reinforced region. In terms of production technology, the tubular drainage foil 3a It has been found that folding a portion of the tube at the end to form a reinforced area is particularly efficient. Here, the folding specifically forms the inner interface of the tubular drainage foil 3a. The tubular element forms the outer interface 28 of the tubular drainage foil 3a in the reinforced region. It will be executed in a manner such as this. The marked edge region 26 of the tube opening can be folded outwards, thereby The double wall reinforces the edges of the tubular drainage foil 3a. The folded edges are, for example, For example, it can be fixed in a point-like manner by the seams. Tearing of the tubular drainage foil 3a This is effectively prevented by the reinforced edges.

[0104] Figure 13 shows various embodiments of the tubular drainage foil 3a according to the present invention. In particular, The tube-shaped drainage foil 3a has a tube opening 32 or an open tube at one end of the tube. It may have an end and a closed tube end 33 attached to the other end of the tube. The tubular drainage foil 3a can also have tube openings 32 at both ends of the tube. The tubular drainage foil 3a further has reinforcing elements 29, for example, folded edges. You may do so.

[0105] Figure 14 shows a tubular shape having a tube 16 which may be provided together as a wound care kit 34. Figure 15 shows a side view of the drainage foil 3a. Figure 15 may be provided together as a wound care kit 34. Figure 16 shows a side view of a tubular drainage foil 3a having a tube 16 and an absorbent 35. , tube 16 and connecting means 36, for example, annular coating aid or clamp, The image shows a side view of a drainage foil 3, such as a tubular drainage foil 3a, and these are used in wound care. It can be provided together as part of set 34. [Explanation of symbols]

[0106] Code List 1 Welding die 2 brackets 3. Drainage foil 3a Tubular drainage foil 3b Double drainage foil 4 base 5 Cutting elements 6. Welded joint 7. Foil residue 8 Ram 9 sleeves 10 The side of the connecting line opposite the fold line, especially the fold line 11 connecting wires 12. The side of the connecting line facing the fold line, especially the fold line 13 Corresponding RAM 14 Adhesives 15-sided fastener 15a, 15b Folding fasteners 16 tubes 17. The first element 18. Second element 19 Cutting foil 20 Drainage space 21 Residual substances 22 Insertion aid 23. Predetermined fracture point 24 Elastic Foil 25 Elastic joint 26 Edge area 27 Winding shaft 28 Outer interface of tubular drainage foil 29 Reinforcement elements 30 Tube shaft 31 Inner interface of tubular drainage foil 32 Tube opening 33 Closed tube end 34 Wound Care Kit 35 Absorbent 36 Connection means

Claims

1. A method for manufacturing a double-walled drainage foil having an open drainage space, i) A step of providing a first web-like element and a second web-like element, ii) A step of perforating the first web-like element and the second web-like element, the first In each of the web-like element and the second web-like element, at least the passage of bodily fluids is made possible. A step is to form another opening, preferably a plurality of openings that allow the passage of bodily fluids, iii) The second web-like element is positioned so that the first web-like element and the second web-like element are positioned approximately parallel to each other. The process of placing a first web-like element on top of the web-like element, iv) The first web-like element and the second web-like element are fastened together in at least one fastening region, particularly a small At the very least, a single point-shaped fastening region is preferably connected by ultrasonic welding, and the first web-shaped A double-walled drainage hoist with an open drainage space formed between the element and a second web-like element. A method characterized by comprising a step of obtaining a lump.

2. At least one opening that allows the passage of bodily fluids is in the range of 100 μm to 2000 μm. The area, preferably in the range of 300 μm to 700 μm, more preferably in the range of 400 μm to 600 μm The method according to claim 1, having a diameter in the range of μm.

3. The first web-like element and the second web-like element are fastened together in step iv) In the connection region, preferably connected by a number of fastening regions formed in a grid arrangement, preferably, In each case, the distance between adjacent fastening areas is 2 mm or more, preferably 3 mm or more. The method according to claim 1 or 2, preferably having a thickness of 5 mm or more.

4. The aforementioned drainage foil has a density of 30 g / m². ２ ~90g / m ２ Preferably 40 g / m ２ ~80g / m ２ More preferably 50 g / m ２ ~70g / m ２ Having a basis weight within the range of claims 1 to 3 A method using one of the following methods.

5. The drainage foil has a tensile strength of 7 N / 25.4 mm or more, an elongation at break of 40% or more, and a length of 75 m. ３ / m ２ A claim having a porosity of 0.5 N / 25.4 mm or more, and / or a bond strength of 0.5 N / 25.4 mm or more. The method according to any one of items 1 to 4.

6. At least one opening that allows the passage of bodily fluids, in particular, a first or second web-like structure With respect to a plan view of the planar extent of the element, the element has a circular, round, and / or elliptical shape, as per claim 1. The method described in any of the following five points.

7. The method described above involves adhesives, particularly adhesives, adhesive materials and / or hook fasteners, particularly one or The method according to any one of claims 1 to 6, which includes the step of attaching a plurality of spikes to the drainage foil. Law.

8. Step ii) is performed before or after step iii), and / or step iv) is performed after step iii) and The method according to any one of claims 1 to 7, performed before or after step ii).

9. The above method forms a three-dimensional structure, preferably a tubular structure, from the drainage foil. Including the process, Preferably, the three-dimensional structure is formed by welding, particularly ultrasonic welding or laser welding, thermal bonding, particularly U V or hot air heat bonding, use of adhesive, and / or deep drawing, especially in step iv) bonding. The first web-like element and the second web-like element are formed by deep drawing. The method according to any one of claims 1 to 8.

10. The method according to any one of claims 1 to 9, wherein the drainage foil is tubular.

11. A method for manufacturing a tubular drainage foil, a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably The present invention provides a drainage foil manufactured according to any one of claims 1 to 10, b) The drainage foil has overlapping regions that are connected to form connecting lines. The process of folding the liquid foil over the drainage foil itself around the fold lines, especially the crease lines. Preferably, the drainage foil has a first edge and a second edge extending substantially parallel to the first edge The drainage foil has an edge and is connected to a connecting line along the first edge and the second edge. Along the fold lines or crease lines on the drainage foil itself, respectively, so that it has an overlapping area. The process of folding or creasing, c) A connecting step in which drainage foils are connected along the overlapping region to form a connecting line, d) A method characterized by comprising the step of obtaining a tubular drainage foil.

12. A method for manufacturing a tubular drainage foil, a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably The present invention provides a drainage foil manufactured according to any one of claims 1 to 10, and an elastic material. The process and b) An overlap between the first edge of the drainage foil and the elastic material that can be connected to a connecting wire. A step of positioning the first edge of the drainage foil on the elastic material so that a region is formed, c) Along the overlapping region between the first edge of the drainage foil and the elastic material, A step of connecting the elastic material to form a connecting line, d) Fold the drainage foil onto the elastic material along the fold line, especially the crease line, and make a crease. Then, the overlapping region connected to the connecting line is the second edge of the drainage foil, preferably the first edge. A process of forming between the second edge of the drainage foil, which extends substantially parallel to the elastic material, and the elastic material, e) Along the overlapping region between the second edge of the drainage foil and the elastic material, the drainage foil A connecting step involves connecting the rubber and the elastic material to form a connecting line, f) A method characterized by including a step of obtaining a tubular drainage foil.

13. A method for manufacturing a tubular drainage foil, a) Drainage foil, preferably a double-walled drainage foil having an open drainage space, more preferably The present invention provides a drainage foil manufactured according to any one of claims 1 to 10, b) Wrap the drainage foil around the winding shaft such that the drainage foil has overlapping areas. This is a process in which the overlapping region is formed by winding around the winding shaft. The process involves the connection to a connecting wire, and the drainage foil being present in at least two layers. c) Preferably by adhesive or connecting means, at least two layers within the overlapping region The first and second layers of the existing drainage foil are connected, preferably forming a connecting line. The process of connecting, d) A method characterized by including a step of obtaining a tubular drainage foil.

14. The aforementioned connection process involves welding, particularly ultrasonic welding or laser welding, thermal bonding, particularly UV or thermal bonding. Wind, adhesives, especially adhesives or hook-and-loop fasteners, and / or connecting means, especially clamps. The method according to any one of claims 11 to 13, characterized by being broken.

15. The aforementioned connection step is performed by ultrasonic welding, preferably in the range of 0.1 to 5.0 m / min. Speed, power output in the range of 50 to 500 watts, and / or pressure in the range of 5 N to 100 N The method according to any one of claims 11 to 14, which is implemented.

16. The above connection step is a step of placing the drainage foil inside the ultrasonic welding apparatus and the drainage The wheel is welded in particular using a welding die, for example, an L-shaped welding die, to form a tubular drain hole. The method according to any one of claims 11 to 15, comprising the step of forming an oil.

17. The aforementioned connection step is performed using a cutting wheel having a cutting edge radius of 0.2 mm or less, and / Alternatively, using a cutting wheel with a grinding angle of 15° or less opposite to the fold, especially the fold line. , and / or cutting wheels having a grinding angle of 75° or less on the opposite side of the fold, especially on the opposite side of the fold line. The welding is performed by ultrasonic welding using a device, according to any one of claims 11 or 12 and 14 to 16. Methods used.

18. The fold in the connecting line, and especially the edge of the drainage foil located on the opposite side of the fold line. The lip is removed, in particular by punching, during or after connection, claim 11 or 1 The method according to 2 and any of 14 to 17.

19. The connecting line, preferably a welded joint, is along the circumferential direction of the tubular drainage foil. Having a width of 2 mm or less, preferably 1 mm or less, more preferably 0.5 mm or less, The method according to any of the requests 11 to 18.

20. The connecting line, preferably a welded joint, is along the radial direction of the tubular drainage foil. The thickness is 1 mm or less, preferably 750 μm or less, and more preferably 450 μm or less. The method according to any one of claims 11 to 19.

21. Preferably, the method involves placing the reinforcing element in the overlapping region before the connection step. Therefore, a reinforcing element is provided in the area of ​​the connecting line and / or at least one tube end. Claims 11 to 20, in particular, include the step of attaching a reinforcing strip or reinforcing wheel. One of the following methods.

22. The method according to claim 21, wherein the reinforcing element is foil, preferably polyethylene foil.

23. The tubular drainage foil has a circular shape at at least one end of the tube that has a reinforcing region. Formed in the circumferential direction, the drain foil is present in at least two layers, The reinforced area is preferably formed by folding a portion of the tubular drainage foil at the end of the tube. Formed by folding, the folding is particularly characterized by the tubular elements that form the inner interface. The reinforcement region is executed to form the outer interface of the tubular drainage foil. The method according to any of the requests 11 to 22.

24. At least a portion of the tubular drainage foil starts from the tube opening at the end of the tube. Then, it is wound up along the longitudinal axis of the tube, and in particular, starting from the inner interface, the outer The following are claims 11 to 23, which are wound up along the longitudinal tube axis in the direction of the side interface. One of the following methods.

25. After connection, the side of the connecting line facing the fold line, especially the fold line, will be attached to the tubular drainage foil. By inverting it, it is rotated completely outward, as per claim 11 or 12 and 14 to 24. The method described in any of the following.

26. The drainage foil provided in step a) is manufactured according to any one of claims 1 to 10. The method according to any one of claims 11 to 25, which is a drainage foil.

27. A first tubular element that forms the outer interface, and facing the opposite side from the outer interface It has a second tubular element that forms an inner interface, and the second tubular element is A tubular element connected to the first tubular element by at least one fastening region It is a drainage foil, The first tubular element and the second tubular element each enable the passage of bodily fluids. It has at least one opening, which is open between the outer interface and the inner interface. A tubular drainage foil characterized by the formation of a discharge space.

28. The first tubular element and / or the second tubular element are made of plastic. The plastic foil is preferably made of polyethylene, polypropylene, or polypropylene. Polyethylene terephthalate, polyurethane, polytetrafluoroethylene, polyhydrox The tube according to claim 27, comprising sibutylate, polylactide and / or cellulose. A foil-like drainage sheet.

29. The first tubular element and the second tubular element are favorably arranged in a number of fastening regions. The fasteners are connected by a number of fastening regions formed in a grid arrangement, preferably adjacent fastening regions The distance between zones is 2 mm or more, preferably 3 mm or more, more preferably 5 mm or more. A tubular drainage foil as described in item 27 or 28.

30. The tubular drainage foil comprises the first tubular element and the second tube Shaped element, and / or the first tubular element and / or the second tubular element and elastic A connecting wire for joining materials, preferably a welded joint, as described in any of claims 27 to 29. A tubular drainage foil is included.

31. The connecting wire is preferably 2 mm or less in length along the circumferential direction of the tubular drainage foil. The tube according to claim 30, having a width of 1 mm or less, more preferably 0.5 mm or less. A tubular drainage foil.

32. The connecting wire is preferably 1 mm or less along the radial direction of the tubular drainage foil. The material has a thickness of 750 μm or less, more preferably 450 μm or less, according to claim 30 or 3 The tubular drainage foil described in 1.

33. The tube-shaped drain foil is 10 g / m ２ to 200 g / m ２ , preferably 40 g / m ２ ~80g / m ２ More preferably 50 g / m ２ ~70g / m ２ Claim 27, having the basis weight A tubular drainage foil as described in any of the above (1) through (32).

34. The aforementioned tubular drainage foil has a tensile strength of 7 N / 25.4 mm or more and a fracture rate of 40% or more. It stretched to 75m ３ / m ２ Porosity of 0.5 N / 25.4 mm or more, and / or bond strength of 0.5 N / 25.4 mm or more. A tubular drainage foil having the characteristics of any one of claims 27 to 33.

35. The tubular drainage foil has a tube opening at at least one tube end. Preferably, the tubular drainage foil has a tube opening at one end of the tube. Having a tube opening at another tube end, according to any one of claims 27 to 34 The tubular drainage foil described.

36. The tubular drainage foil is along at least one tube end and / or connecting wire. The invention relates to claims 27 to 35, which have a reinforcing element, particularly a reinforcing strip or reinforcing foil. A tubular drainage foil as described in one of the following.

37. The tubular drainage foil has a reinforcing region at at least one end of the tube, The reinforced area is preferably one of the tubular drainage foils at the end of the tube. It is formed in the form of a two-layered edge portion formed by folding the part, and the folding is particularly The second tubular element forming the inner interface is, in the reinforcement region, The outer interface of the tubular drainage foil, particularly the reinforcing region of the tubular drainage foil. A tube according to any one of claims 27 to 36, which is made to form the outer interface of A foil-like drainage sheet.

38. The outer boundary surface, the inner boundary surface, and / or the inner boundary surface are formed by the above Claim: The inner lumen of a tubular drainage foil is equipped with a sliding aid and / or an insertion aid. A tubular drainage foil as described in any of items 27 to 37.

39. The sliding aid may contain an aqueous lubricant, a glycerol-based lubricant, a polymer gel, or, in particular, an anti-allergen. Gyey polymer gels, lubricants for endoscopes, especially sliding gels for endoscopes, and / or aqueous solutions, especially A tubular drainage foil according to claim 38, comprising a sodium chloride solution.

40. The insertion aid includes fabric and / or plastic, and / or the insertion aid is This is a tubular insertion aid placed inside the inner lumen of the aforementioned tubular drainage foil. A tubular drainage foil according to claim 38 or 39.

41. The tubular drainage foil is 0.5 cm to 40 cm, preferably 2 cm to 30 cm. The lengths of claims 27 to 40, having a length in the range of cm, more preferably 5 cm to 20 cm. A tubular drainage foil as described in one of the following.

42. The tubular drainage foil is 1 mm to 60 mm, preferably 2 mm to 50 mm. , more preferably having an outer diameter in the range of 4 mm to 30 mm, any of claims 27 to 41 A tubular drainage foil as described above.

43. A tubular drainage foil produced according to any of the methods of claims 11 to 26, or A tubular drainage foil according to any one of claims 27 to 42, an absorbent, a tube, and a It has at least one further component selected from ears, stents, and insertion aids. death, Preferably, at least one portion of at least one further component is an inner interface It is characterized by being placed inside the inner lumen of a tubular drainage foil composed of the following: Wound care kit.

44. The absorbent material is made of sponge, foam, especially polyurethane or polyvinyl alcohol. A wound care kit according to claim 43, comprising foam or gauze.

45. The wound care kit according to claim 43 or 44, wherein the tube is a drainage tube.

46. The wound care kit is 0.5 cm to 250 cm, preferably 10 cm to 200 cm. A wound care kit according to any one of claims 43 to 45, having a length in the range of m.

47. A tubular drainage foil according to any one of claims 27 to 42, for use in wound care. Or the wound care kit according to any one of claims 43 to 46.

48. A tubular drainage foil according to any one of claims 27 to 42 or claims 43 to 4 A wound care kit described in any of the six items is brought into contact with the patient's wound, characterized by the wound being treated Methods for providing care.

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