SE462516B - WOOL TAPE FOR DEEP SAAR - Google Patents

Description

15 20 25 30 35 2 Several patents report proposals for how infected wound cavities can be drained and flushed clean without dressing; for example, U.S. Patent No. 3,753,439. However, this device is intended to be used as temporary drainage and cannot be used as a dressing. A number of patents disclose devices for flushing superficial wounds, for example DE 2,809,828 and U.S. Patents 3,026,874, 3,874,387 and 2,280,915. By means of these latter dressings there is no possibility of flushing deep wounds and most of they are also very complicated in their construction. The methods described in the patents have all the practical disadvantages that make them unsuitable for clinical use.

There is thus a great need for an aid which improves and simplifies the treatment of deep wounds, which is inexpensive and easy to treat and which reduces the suffering of the patient. The object of the present invention is to provide a flushing dressing which is practically useful for all types of wound cavities regardless of their depth, and which can be manufactured at a low cost. Yet another object of the present invention is to provide a flushing dressing which can be handled by non-specially trained personnel and which is so constructed that the patient can move freely with it. Yet another object of the present invention is to provide a flushing dressing which results in a significant reduction in the number of rearrangements of wound cavities compared to current methods.

These objects are achieved by means of a flushing connection comprising a substantially airtight and waterproof, flexible plate, which consists of an outer layer, an inner adhesive layer and possibly a release layer applied to the adhesive layer, the plate being provided with at least one perforation, where a line is connected to the perforation for supply and suction of liquid, and where the perforation is also used for pressure equalization. The invention will be described in more detail below with reference to the accompanying figures, which schematically illustrate some embodiments.

Fig. 1 shows in cross section a coil connection according to the invention; Fig. 2 shows a coil connection according to the invention taken from above over the outer surface; Figs. 3-6 also show in cross section different embodiments of a part of the coil connection according to the invention; Fig. 7 shows a design of the conduit for liquid supply and drainage; Fig. 8 shows in section a further embodiment of the coil connection according to the invention; Fig. 9 shows an alternative embodiment of the conduit for liquid supply and drainage; and Figs. 10a-b show embodiments of a bag which can be connected to the flushing connection according to the present invention.

Referring to Figures 1 and 2, there is shown a coil dressing according to the present invention comprising a flexible, skin compliant plate 1, which consists of an outer layer 2 and an inner adhesive layer 3. The outer layer is of an air and liquid tight , compliant material, such as polyurethane foam, and the inner adhesive layer is, for example, of a hydrocolloid adhesive. The inner adhesive layer 3 is provided with a protective paper 5, which may alternatively form part of a package. Centrally between the outer and inner layer is a stiffer portion 4 of eg silicone.

Alternatively, the stiffer portion may be provided on the upper or lower surface of the plate 1.

Through the plate 1 and the stiffer portion 4 two perforations 6 and 7 are arranged and in these perforations are connected connections 8 and 9. To the connection 8 in the perforation 6 is connected a conduit 10 of flexible, skin-friendly and non-crackable material for supply and drainage of liquid. For example, the wire is a thick-walled silicone hose. The lower end of the hose may be abruptly cut off, but is suitably pointed, which facilitates its use. In the lower end of the hose a flexible cushion 11 is also arranged, for example a cylindrical piece of synthetic fabric or foam rubber constituting an open pore system with capillary function. The pillow is threaded over the end of the cord. It may fill a larger or smaller part of the wound cavity in question. The conduit 10 can either be of a certain, predetermined length or have weakenings or fracture indications 17 at different levels in order to be able to tear off the conduit so that it has a length which is suitable for the particular wound. This is shown by Fig. 7.

Both the outer layer of the plate 2 and the conduit 10 and the stiffer portion 4 may be of silicone, PVC, other suitable plastic or rubber.

The perforation 7 with associated connection 9 has a pressure equalizing function. Here air passes freely. The perforation 7 does not necessarily have to be provided with a connection but can consist of an open hole. In the case of using a connection in the perforation 7, this can alternatively be provided with a water trap 13 (see Fig. 3) or alternatively, if such does not fit within the narrow area of the perforation, with a water trap device (not shown), which is connected to the connection is temporary and can then be removed. Another alternative is to attach a water level indicator 14, for example consisting of a transparent rubber hose, as shown in Fig. 4. In this way you get an indication of when the wound hole has been filled with flushing liquid and can start the suction. As can be seen from Fig. 5, the perforation 7 can be provided with an air filter 15 to avoid bacterial entry. Furthermore, it can be seen from Fig. 6 that instead of the perforation 7, an area 16 of the plate 1 may be made of a porous, air-permeable material, instead of the outer tight layer and the adhesive layer, in order to thus serve as pressure equalization and the porous material has then preferably a water-repellent surface on the side facing the skin. Both connections 8 and 9 are suitably adapted for connection to existing systems in healthcare.

On the outer surface of the outer layer 2, i.e. the side opposite the side attached to the adhesive layer, the connections 8 and 9 are suitably countersunk, in order to avoid protruding parts which can get stuck or otherwise be obstructive. The stiffened plate 4 can be excluded if the construction of the joint is otherwise sufficiently stable.

Before use and after rinsing and emptying, the two connections can be sealed with the help of a piece of tape or, for example, with the help of an entire lid of silicone adhesive.

The perforation 6 with associated connection is on the side opposite the hose side intended to be connected to, for example, a syringe 12 (see Fig. 1) for introduction of rinsing liquid and by means of the syringe the wound cavity is also emptied. In the case of larger wound cavities, it may be necessary to use a drip to fill the cavity and for emptying the cavity, the connection can then be connected to a two-way valve with an associated syringe. This works by sucking liquid from the cavity but forcing the liquid out another way.

Alternatively, the plate 1 can be provided with only one perforation, which is used for both supply and extraction of liquid as well as for pressure equalization. For example, by the line 10, which is connected to the perforation, being designed as a double line or by simply allowing the air emanating from the wound cavity to pass next to the line.

A further embodiment of the flushing dressing according to the present invention is that shown in Fig. 8, where the dressing includes a tight bag 18 for filling the wound cavity. The bag, which is intended to be completely or partially filled with either liquid, eg water, or gas, eg air, forms after the walls of the wound cavity after filling and can make the use of compresses or other filling material unnecessary. The bag is usually elastic of polymeric materials, possibly foam material or latex rubber, but can also be inelastic. The pause provides support, contributes to immobilization and the foreign material can stimulate healing. In this case the plate 1 has another opening 462 10 15 20 25 30 5 516 6 19 for connection and filling of the bag 18. The opening 19 can for instance be provided with a rubber membrane. Such an embodiment further facilitates wound dressing for both patient and staff. The rinsing according to the invention will advantageously engage only the layer between the bag and the wound surface.

The case 18 can also have an active function. For example, the wall of the bag may be of a semipermeable membrane and allow the passage of, for example, drugs from the liquid-filled interior of the bag. Alternatively, the wall of the bag may be provided with a drug, other healing substance, bactericidal agent or the like. Referring to Fig. 10a, it is shown that in order to facilitate the extraction of liquid from the wound cavity after liquid has been filled up to the plate 1, the wall of the bag, further towards the wound surface, may further be provided with open, communicating tubes or channels 24 with for the purpose of distributing and draining liquid in the direction of the cushion 11 or the opening of the conduit 10. Instead of separate channels, the bag may, as shown in Fig. 10b, have constrictions which cause channels to be formed between the wall of the bag and the wound surface. These constrictions can be achieved, for example, by the material for the bag there having lower elasticity. A capillary-functional material can also be applied to the outer wall surface of the bag, such as a fabric to facilitate the drainage of flushing liquid. Another alternative is to make the bag 18 with double walls, whereby channels for liquid passage are located in the layer between the outer and the inner wall. Also in this case, the outer wall may be of a semipermeable material for the passage of, for example, drugs, as mentioned earlier, or of a capillary-active material. Furthermore, the channels can be completely or partially perforated and the bag can be completely or partially designed with channels, capillary material and semipermeable material. An additional function of the bag 18 may be to function as a substantially stabilizing means after the rinsing has been carried out. The bag can in this case be used both with the spool dressing according to the present invention and with another separate plate or an adhesive layer. The materials in the wound stimulate the wound healing. To further facilitate the insertion of the bag, the connection between the plate 1 and the bag 18 can be extended by means of a hose.

Fig. 9 shows an embodiment of the lower part of the line 10, which embodiment is particularly suitable for use with bagged joints. The conduit is here at the end which is intended to be applied in the deepest part of the wound provided with a cushion ll with communicating or non-communicating spaces or channels 22, which are capillary or non-capillary functioning. The cushion may comprise stabilizing means which keep the ducts open against external or internal pressure. The cushions or channels of the cushion are open outwards and towards the conduit 10 and can communicate with the following pipes 21, which may have perforations on a larger or smaller part of their surface. These tubes are distributed over the wound surface and wound fluid, as well as flushing fluid, is drained via the tubes between the bag and the wound surface towards the pad. Alternatively, the cushion may consist of a stiffer part, of eg skin-friendly plastic, which has a number of holes for spreading rinsing liquid over a larger area. In the above embodiments with the bag 18, the conduit 10 has been laid next to the bag. It is obvious that the construction can also be designed so that the line 10 runs through the bag 18.

The coil dressing of the present invention operates in the following manner. The conduit 10 and possibly the pad 11 at the end of the conduit are placed in the deepest part of the wound cavity to be treated, after which the remaining space of the wound cavity is filled with gas compresses. Alternatively, the embodiment is used with the bag 18, whereby it is filled with a suitable volume and then placed in the wound cavity to then finally adjust the volume. The plate 1 is then placed with the adhesive against the skin over the wound cavity and when the plate is in place the system is tight with the exception of connections 8 and 9. The rinsing treatment is always given with the wound surface upwards 462 516 10 15 20 25 30 35 8 in order to fill the cavity completely. The lead and pad are in that position at the lowest point of the wound. In the case of a not too large wound cavity, a syringe is connected to the connection 8 and flushing liquid is introduced into the wound cavity. Flushing fluid is introduced until an indication is given that the wound cavity is fluid-filled. The wound cavity is then emptied, after which the syringe is removed and the connections are closed. The purpose of the pillow 11 is also to catch the liquid that settles at the very bottom of the wound cavity, which is impossible to achieve with just one hose end. After suction, the compresses in the wound cavity are approximately 50% liquid-saturated.

The following are examples which illustrate the invention without thereby limiting it to the indicated embodiments.

Example 1 Flushing of small cavity, less than 50 ml (eg drained 112421 A filled 50 cm3 line. Liquid is injected until resistance is met, when a water syringe is connected to the connection with the tin lock closes or the indicator shows that the cavity is filled. During aspiration, both the injected fluid and each bacterium present in the wound before the procedure is removed. The syringe and any water trap and indicator are disconnected. The connections are closed to achieve an occlusive environment in the wound until the next flushing. is filled with gas compresses, the liquid flow is controlled in the capillary-active gas material as well as in the fabric during suction in the direction of the cushion.The gas is washed from where and thereby reduces the need for rearrangement.

Example 2 Section flushing of a large cavity, larger than 50 ml (eg bedsores) A drip bag with unit is connected to the connection with the pipe. The wound is filled as in Example 1. The unit is disconnected. A syringe with a two-way valve is connected. Drainage is done to a uribag or plastic bag. Aspirate repeatedly 15 times until the cavity is emptied of liquid.

With the help of the present flushing connection, it is possible to replace 3-7 changes per day with one change per day, which both physically and mentally saves the patient and entails a significant cost saving for healthcare. The flushing dressing according to the present invention is also very easy to handle, so no specially trained personnel are required. One can even imagine that the patient himself can handle the dressing. Since there are no protruding parts on the outside of the dressing when rinsing is not performed, the dressing is well suited for patients with bedsores, as well as enabling the patient to move freely. The dressing can be used for both small and large wound cavities. Especially when the line is provided with weakening or breaking instructions and when it includes the bag, it is quickly and easily adapted to a special cavity.

Claims (14)

462 516 10 15 20 25 30 35 10 PATENT CLAIMS Deep-wound coil dressing, characterized in that it comprises a substantially airtight and waterproof, flexible plate (1), which consists of an outer layer (2), an inner adhesive layer (3) and optionally a a release layer (5) applied to the adhesive layer, the plate being provided with at least one perforation (6), where a line (10) is connected to the perforation for supply and suction of liquid and where the perforation is also used for pressure equalization. Flushing connection according to claim 1, characterized in that the plate is provided with at least two perforations (6, 7), wherein the line (10) for supply and suction of liquid is connected to one perforation (6 ) and where the second perforation (7) is used for pressure equalization. Coil connection according to claim 1 or 2, characterized in that it comprises a stiffening (4), which is also provided with at least one perforation corresponding to the perforation (s) (6, 7) in the plate (1), A coil dressing according to claim 1, 2 or 3, characterized in that the end of the conduit (10), which is known to be placed in the lowest part of the wound, is provided with a cushion (11) of capillary active material. Flushing dressing according to claim 1, 2 or 3, characterized in that the end of the conduit (10), which is known to be placed in the lowest part of the wound, is provided with a cushion (II) with communicating or non-communicating channels. (22) and outgoing pipes (21). Flushing connection according to one of the preceding claims, characterized in that the perforation (6, 7) for pressure equalization is provided with a water trap (13) or a water level indicator (14). 10 15 20 25 30 35 462 516 ll A flushing dressing according to any one of the preceding claims, characterized in that it comprises a bag (18) for filling the wound cavity, the plate being provided with a further opening (19) for connection and filling of the bag. Flushing dressing according to one of the preceding claims, characterized in that a portion of the plate (1) around the pressure equalization perforation (6, 7) is made of a porous, air-permeable material (16) which on the side facing the skin can have a water-repellent surface. Flushing connection according to one of the preceding claims, characterized in that the perforation (6, 7) for pressure equalization is provided with a filter (15). Coil connection according to one of the preceding claims, characterized in that the line (10) is provided with weakenings (17). Coil connection according to one of the preceding claims, characterized in that connections (8, 9) are provided in the perforations (6, 7), which are recessed on the surface of the plate which is opposite the surface attached to the adhesive layer (3). ). Bag for filling in and possibly actively influencing a wound cavity, wherein the bag is delimited by a wall and has a connection for filling it, characterized in that it is completely or partially filled with liquid or gas and that the wall , in whole or in part, is either 1) of an impermeable material, 2) of a semipermeable material, 3) of a porous, capillary-active material, or 4) provided with channels (24, 25) for liquid passage. Bag according to claim 12, characterized in that it is double-walled and in that the outer wall, in whole or in part, is either 1) of an impermeable material, 462 516 12 2) of a semipermeable material, 3) of a porous , capillary active material, or that channels (24, 25) for liquid passage are located between the walls. 5 A bag according to claim 12 or 13, characterized in that its simple wall or outer wall is provided with a medicament. k ä n n e - 10 15 20 25 30 35 7 40