Dressing for the control of bleeding and post-traumatic haemorrhage description
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2026-04-02
AI Technical Summary
Existing pressure dressings for controlling bleeding in traumatic injuries often require complex application, may slip off, and provide inadequate surface pressure, especially in combat or emergency conditions where quick and easy use by untrained individuals is crucial.
A dual-chamber dressing with a cohesive bandage and absorbent inserts, where one chamber expands to fill wound spaces and the other provides surface pressure, using impermeable and absorbent materials to maintain pressure and control bleeding effectively.
The dressing ensures easy application, maintains consistent pressure on wounds, and effectively controls bleeding even under stressful conditions, preventing slippage and enhancing wound contact area pressure.
Smart Images
Figure PL2025050060_02042026_PF_FP_ABST
Abstract
Description
[0001] Dressing for the control of bleeding and post-traumatic haemorrhage Description
[0002] Field
[0003] The subject of the utility model is a dressing for the control of bleeding and post- traumatic haemorrhages resulting from injuries of various mechanisms of injury, including injuries such as cut wounds, lacerated wounds, gunshot wounds, chopping wounds, and wounds resulting from explosions - including combat injuries.
[0004] Background of the utility model
[0005] Bleeding control is one of the most important aspects of acute trauma treatment. Quick and effective application of pressure at the scene, until arrival at a medical facility, reduces blood loss from wounds and increases the victim's chance of survival.
[0006] The care of the injured person at the site of injury is focused primarily on controlling bleeding, treating post-traumatic pneumothorax, and opening and controlling the respiratory tract to reduce the occurrence of the so-called preventable deaths.
[0007] The basic methods of controlling bleeding are the use of tourniquets (so-called tactical tourniquets), pressure dressings, including "Israeli dressings", or dressings such as Olaes Modular Bandage (OMD).
[0008] Pressure dressings should be light, durable, cheap, and, above all, quick to use in combat conditions. They should significantly limit or stop bleeding, and their application and removal should be easy and quick and possible to perform even by an untrained person, or by the injured individual under stress.
[0009] Description of the prior art
[0010] Various solutions of pressure dressings for stopping bleeding and post-traumatic hemorrhage are known in the state of art. For example, a modification of the Israeli -type bandage is known: https: / / www.cop-shop.de / en / product / emergency-bandagetm-t3-israeli- bandage-9081. This emergency dressing consists of a textile gauze bandage with a nonadherent sterile pad, a pressure applicator, and a built-in closure strap. The dressing has an additional chamber in which additional gauze is placed. If necessary, a second gauze can be additionally applied inside the wound in case of heavy bleeding.
[0011] The dressing is equipped with a special clamp (which should be placed directly above the wound), thanks to which it is possible to wrap the bandage around the wound in different directions. An important aspect when applying the dressing is the ability to change the direction of the bandage after threading it through the clamp (this manoeuvre increases the pressure directly above the bleeding site). The clip at the end of the bandage makes it easier to secure and prevents the dressing from slipping off. Rotating the clip 360° or more helps to further reduce blood flow in the blood vessels and is helpful in stopping heavier bleeding when a tourniquet is not immediately available. In this type of solution, the pressure element is applied at a single point.
[0012] Similarly, the issue of pressure in Olaes Modular Bandage (OMD) dressings is solved by using a plastic overlay that exerts point pressure over the bleeding site. The dressing is held in place by a bandage with sewn-in narrow Velcro® tapes, which function as a hook- and-loop fastener and prevent the bandage from uncontrolled unwinding during use.
[0013] There are also known pressure dressings of the type AirWrapTrauma Compression Bandage: http s : / / www. r evme dx . com / ai rwrap / , consisting of a compress not adherent to the wound and a roll of elastic bandage and provided with an air-inflatable plastic cuff and a hand pump. The purpose of the cuff is to create concentrated superficial pressure at the wound site and free the rescuer's hands for other activities.
[0014] In the patent literature it is disclosed in the description WO0215816A2 a pressure dressing, comprising a self-adhesive elastic bandage strip intended to exert a compressive force when wrapped around a body part sufficient to hold the pressure dressing in place for a period of time to provide a therapeutic effect on a wound, and an absorbent pad attached to the inner side of the end portion or to the extreme end of the self-adhesive elastic bandage strip.
[0015] The description of US2022313492A1 discloses a device for packing into the wound that expands to fill wound voids to control bleeding. The device consists of two or more individual bags connected and filled with an expandable material that swells when blood is absorbed by the walls of the bag.
[0016] US2017105877A1 discloses embodiments relating to a wound dressing comprising: a cohesive bandage having a predetermined length and width, wherein the length is significantly greater than the width; and an absorbent pad attached to the bandage proximate to, but spaced from, the terminal end of the bandage to define a terminal portion between the pad and the terminal end of the bandage.
[0017] The dressing may be a pressure dressing adapted to exert a compressive force on a body part when wrapped around that body part.
[0018] The essence of a utility model
[0019] The subject of this utility model is the development of an entirely new solution consisting of creating a dressing that would be easy to use, would simultaneously exert surface pressure on the wound being treated, and would be provided with a removable insert intended to be placed in empty spaces of the wound in order to control bleeding.
[0020] This task was solved by means of a dressing for stopping bleeding and post-traumatic haemorrhage consisting of two chambers, each of rectangular shape, wherein the shorter side of the first chamber is smaller than the shorter side of the second chamber, wherein the first chamber is permanently connected to the second chamber along the longer side of the first chamber and the first chamber is open on one of the shorter sides, wherein a bandage is permanently connected to the outer side of the second chamber, the longer, loose end of which protrudes beyond the edge of the second chamber,
[0021] The dressing according to the utility model is characterized in that the bandage is a cohesive bandage. The first chamber and the second chamber of the dressing are made of a material impermeable to liquids on the side connected to the bandage and are made of an absorbent material on the opposite side, facing the wound. The first chamber has a closed sleeve that is not attached to the interior of the first chamber, wherein the sleeve has loosely spaced each other, compressed absorbent pads that increase in volume when soaked with blood. In contrast, the closed second chamber has a compressed absorbent pad that fills the space of the second chamber completely and increases in volume when soaked with blood.
[0022] Advantageously, the sleeve is divided into several pockets in which absorbent inserts are placed loosely.
[0023] Advantageously, the sleeve is a flexible dressing mesh.
[0024] Advantageously, the sleeve is made of cotton, viscose, or blended fibres.
[0025] Advantageously, the absorbent inserts placed in the sleeve are in the form of polyhedrons, discs, or spheres. Advantageously, the absorbent insert of the second chamber includes a plurality of compressed absorbent cores arranged side by side in the form of polyhedrons or disks.
[0026] Advantageously, the absorbent inserts of both chambers are made of cotton, viscose, or blended fibres.
[0027] Brief description of the drawings
[0028] The subject of the utility model is shown in an embodiment, with reference to the accompanying drawings, in which:
[0029] FIG. 1 is a schematic plan view of the dressing according to the utility model with an extended sleeve with inserts.
[0030] FIG. la is a schematic plan view of the dressing according to the utility model with an extended sleeve with inserts placed in pockets.
[0031] FIG. 2 is a cross-sectional view through the dressing chambers
[0032] FIG. 3 is a view - from the bandage side - of the dressing with the sleeve hidden in the chamber with inserts .
[0033] FIG. 4 is a view of the dressing with the sleeve hidden in the chamber from the absorbent material side.
[0034] FIG. 5 is a spatial perspective view of the dressing
[0035] FIG. 6 is a plan view of the sleeve with inserts placed in chambers
[0036] FIG. 6a is a longitudinal section view through the sleeve of fig. 6
[0037] FIG. 7 is a view of sample insert shapes
[0038] FIG. 8 is a view of the end of the bandage with the fastening element
[0039] Detailed description of the utility model
[0040] Hereinafter, the subject of this utility model is described in detail with reference to the accompanying figures. This utility model is not limited to the specific embodiments described herein.
[0041] Fig. 1 shows a schematic plan view of the dressing according to the utility model. The dressing consists of a first chamber 1 and a second chamber 2, which are formed by permanently bonding two types of materials together. Namely, shown in fig. 2, a fluid impermeable material 5 and an absorbent material 6, which is in contact with the wound when the dressing is applied. Material 5 and material 6 can be connected to each other circumferentially by gluing or with seams (S) of width x. It is possible to make a dressing by sewing together material 5 and material 6 circumferentially and then impregnating the resulting element to create a first chamber 1 and a second chamber 2. A cohesive bandage 3 is permanently bonded to the material 5 of the second chamber 2 on the outside of the dressing. The cohesive bandage 3 may be sewn or permanently connected in another way, e.g. glued, so that its edge extends flush with the edge of the first chamber 1 or it may protrude on one side by a loose section of several centimetres, for example 10-15 cm, while on the other side its loose longer end remains rolled up into a roll that is easy to unwind. In addition, the cohesive bandage 3 may be provided at its extreme end with the fastening element 7 shown in Fig. 8, similar to such elements known from the state of the art, but this is not necessary. The dimensions of the cohesive bandage 3 may be arbitrary, preferably it may have a width of 5 to 20 cm and a length of 2 to 5 m. The first chamber 1, and the second chamber 2, have a rectangular shape. The dimension of the shorter side A of the first chamber 1 is less than the dimension of the shorter side B of the second chamber 2. The first chamber 1 and the second chamber 2 are permanently connected to each other along the longer side C of the first chamber 1 to form a rectangular two-chamber dressing according to the pattern as shown in fig. 3.
[0042] The first chamber 1 is open on one of its shorter sides A. Inside the first chamber 1, there is a sleeve 4, not attached to the interior of the chamber 1, in which compressed absorbent inserts la are loosely arranged relative to each other.. The sleeve 4 is made of cotton, viscose, or blended fibres. Preferably, the sleeve should be inflexible, and the pockets 4a should be of a size that allows the insert la to expand.
[0043] The space of the sleeve 4 can be divided into smaller pockets 4a in which the inserts la are placed loosely. The inserts la and their arrangement in the sleeve with pockets 4a are shown in figs, la, 5 and 6 and 6a. The sleeve 4, together with the inserts la, is sewn or otherwise permanently secured around the circumference.
[0044] Pockets 4a are created by cross-stitching of the sleeve 4. Due to the fact that the sleeve is not permanently connected to the first chamber 1 of the dressing, it can be completely withdrawn through the opening in the shorter side A of the first chamber 1 and placed in a wound, which is then secured with a dressing according to the given utility model, or it can be intended for placement in another wound of the body. It can also be foreseen that there will be no need to remove the sleeve 4 from the first chamber 1, in which case, such a two-chamber dressing having a larger total surface area can be used on larger wounds.
[0045] The second chamber 2 is closed around its entire circumference and a compressed absorbent insert 2a is placed inside it, which significantly increases its volume when soaked with blood. Due to the limited capacity of the second chamber 2, the insert 2a swells because of soaking with blood and presses against the inner walls of the second chamber 2. At the same time, thanks to the use of a fluid-impermeable material 5, any blood that passes through the absorbent material 6 of the dressing into the insert 2a remains in the insert 2a. As a result, in comparison with the solutions known in the art, effective pressure is achieved on the entire surface of the second chamber 2 on the damaged tissues. The pressure of the dressing against the wound is applied by a cohesive bandage 3. When using the dressing under the cohesive bandage 3, the swelling insert 2a simultaneously performs a bleeding-control and compression function. The more the 2a insert is soaked with blood, the more the whole presses against the damaged tissue.
[0046] As for the inserts la placed in the sleeve 4, they are made of cotton, viscose, or blended fibres compressed in the form of polyhedral shapes, discs, or spheres. Exemplary shapes of inserts la are shown in fig. 7.
[0047] Similarly, the insert 2a placed in the second chamber 2 may be a one-piece insert, preferably of a cuboid shape, or it may consist of a plurality of compressed absorbent inserts placed next to each other in the form of polyhedral shapes or disks. Exemplary shapes of inserts 2a indicated with letters a, b, c are shown in fig. 7, and an exemplary arrangement of the inserts 2a in the second chamber 2 is shown in fig.2.
[0048] The advantage of the solution, according to the utility model, is the simultaneous use of absorbent inserts la and 2a and a cohesive bandage 3, which, even if dropped, will not unwind in an uncontrolled manner during the application of the dressing. Additionally, already one loop of the cohesive bandage 3, which locks due to the cohesive properties on the surface of the part of the bandage sewn to the second chamber 2 of the dressing, reduces the risk of the dressing shifting and, more importantly, of loosening the pressure, which may occur in the case of elastic bandages used in standard way in the solutions known from the state of the art. In the case of the cohesive bandage 3, even if the injured person who applies the dressing themselves loses consciousness, the dressing will not slip off or reduce the pressure on the wound, as two or three loops are enough for the whole to remain tightly in place, exerting pressure on the wound.
Claims
Protective claims1. A dressing for the control of bleeding and post-traumatic haemorrhage, comprising a first chamber (1) and a second chamber (2), each rectangular, wherein the shorter side (A) of the first chamber (1) has a smaller dimension than the shorter side (B) of the second chamber (2), wherein the first chamber (1) is permanently connected to the second chamber (2) along the longer side (C) of the first chamber (1) and the first chamber (1) is open on one of the shorter sides (A), wherein a bandage (3) is permanently connected to the outside of the second chamber (2), wherein the longer, loose end of the bandage (3) protrudes beyond the edge of the second chamber (2), characterized in that the bandage (3) is a cohesive bandage, the first chamber (1) and the second chamber (2) on the side connected to the bandage (3) are made of a material (5) impermeable to fluids, and on the opposite side, facing the wound, they are made of absorbent material (6), in the first chamber (1) containing a closed sleeve (4) which is not attached to the interior of the first chamber (1), wherein the sleeve (4) contains compressed absorbent pads (la) loosely arranged relatively to each other, that increase in volume when soaked with blood, in the closed second chamber (2) containing a compressed absorbent pad (2a) that completely fills the space of the second chamber (2) and increases its volume when soaked with blood.
2. A dressing according to claim 1 characterized in that the sleeve (4) is divided into several pockets (4a) in which absorbent inserts (la) are placed loosely.
3. A dressing according to claim 1 characterised in that the sleeve (4) is a flexible dressing mesh.
4. A dressing according to claim 1 characterized in that the sleeve (4) is made of cotton, viscose, or blended fibres.
5. A dressing according to claim 1 characterized in that the absorbent inserts (la) have the shape of polyhedrons, discs, or spheres.
6. The dressing according to claim 1 characterized in that the absorbent insert (2a) consists of a plurality of compressed absorbent inserts (2a) arranged next to each other in the form of polyhedrons or discs.
7. A dressing according to claim 1 characterized in that the absorbent inserts (la, 2a) are made of cotton, viscose, or blended fibres.
8. A dressing according to claim 1 characterized in that the material (5) and the material (6) forming the chamber (1) and the chamber (2) are permanently connected to each other at the edges, preferably sewn with seams (S) or glued.