ES1291010U - Wound treatment device and dressing comprising it - Google Patents

Abstract

Wound treatment device (1) In a patient (8) prostrated on a surface (9) that includes an input duct (2) connected to an oxygen source configured to introduce an oxygen flow characterized by what it includes A divisor (3) configured to divide the oxygen inlet flow into a main outfit current of the divisor (3) aimed at an oxygen distributor (4) to the wound, and at least a secondary current of the divisor output (3) directed to a liberating medium (5) of oxygen aimed at a contact zone between the patient (8) and the surface (9) where the patient is prostrated (8). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Wound treatment device and dressing comprising it

field of invention

The present invention is in the health sector, specifically in the improvement for the treatment of wounds.

State of the art

Traditionally, wound treatment has been carried out by cleaning and disinfecting the area, to subsequently monitor the evolution while waiting for the injury to heal.

As used herein, the term "wound" refers to any injury in which the integrity of the skin is disrupted, encompassing multiple injuries, such as a deep cut or ulcer, among others. All these injuries have the common characteristic that they will need treatment for their healing.

On the other hand, it has long been observed that the supply of oxygen to a wound favors the healing process of the area, reducing the time necessary for complete healing of the treated lesion.

However, the use of oxygen for the treatment of wounds must be carried out under certain specific conditions, determined by specialists after the study of each individual case. Thus, the supply of an oxygen flow must be controlled, since an excessive flow can generate, among other things, hyperoxia and, therefore, epithelial damage.

Therefore, control is essential when treating a wound with an oxygen-rich stream.

On the other hand, the use of dressings for wound protection is highly recommended when protecting the injury. Among the main characteristics of a dressing, in addition to protection, the following can be highlighted:

- provide pain relief to the user and avoid pressure,

- act as a barrier against infection,

- absorb the exudate that it produces,

- allow adequate blood circulation in the area

- be flexible and elastic,

- permeable to gases, but not to liquids

- maintain a moist environment within the wound bed

In short, it can be said that the use of a dressing optimizes the wound healing process, which is why it is one of the most widely used products in the health field.

Currently, there are different products that generate the entry of oxygen for the treatment of wounds.

On the one hand, application US5478310 describes a hyperbaric bag for treating a wound with oxygen. This bag can be inflated with oxygen and has a closure to prevent oxygen from escaping during treatment.

Application US2019201672 describes a system for the treatment of wounds that comprises a system for controlling the supply of oxygen to a wound. It is a dressing that integrates a processor to supply a specific oxygen flow based on the needs of the wound.

Generally, these systems focus on creating a specific oxygen flow on the wound to be treated, but do not take into account other factors when treating:

- Patient conditions:

In this sense, the great differences can be highlighted when treating a prostrate patient, that is, a patient who must rest on a surface, for example, on a bed or a chair and cannot get up from it; and a patient who can carry out other activities.

Reduced mobility in bedridden patients can cause damage in certain areas, through sores or other conditions, such as skin maceration; mainly caused by the absence of aeration between the body and the surface where it is prostrates the patient and the continuous pressure exerted on the skin, especially in areas with bony prominences.

- Environmental conditions:

In this section, the sources for the creation of the oxygen flow can be analyzed. In general, it has been observed that the solutions described in the current state of the art describe solutions with an exclusive oxygen flow for the wound to be treated.

Therefore, the use of other oxygen sources, currently available in health centers, such as wall outlets and oxygen cylinders, whose oxygen flow is much higher than that required by the wound to be treated, is limited.

On the other hand, it can be seen how there are solutions where an oxygen current is generated by means of an electric current. These solutions present a reduced flow of oxygen, corresponding to the flow required by the wound. However, these types of solutions have a limited duration for oxygen production.

There is therefore a need for a system that allows improvement for oxygen delivery in open wounds.

Description of the invention

For this reason, a device is presented that aims to improve the healing process of a wound in a patient through the controlled supply of oxygen.

The present invention aims to enable the use of multiple oxygen sources present in health care facilities by means of an oxygen wound treatment device that separates the excess oxygen necessary for oxygen wound treatment.

The wound treatment device described in the present invention has an oxygen inlet, preferably continuous, which is connected to an oxygen source with a flow of said gas greater than that required by the wound.

In this sense, existing outlets in hospitals and social health centers or pre-charged oxygen cylinders can be used. Usually these sources They feature a manometer to infuse a flow rate of 30 - 900 liters per hour, much higher than the flow of oxygen required to treat a wound.

In a preferred embodiment, the inlet comprises a thin, flexible tubular media, and more preferably a flat media. By means of this embodiment, the tube is prevented from producing new ulcers or wounds, and in turn, it does not collapse and prevent the passage of oxygen to the wound. This preferred embodiment generates a relevant improvement in the use of this type of device, especially in those users with limited movement.

In the present invention, the air flow generated by the source is directed to a divider, whose main function is to adjust the rate of oxygen supplied to the wound. To do this, the oxygen inlet flow is reduced to a flow appropriate to the necessary demands of the wound.

In this way, at least two oxygen splitter outlet streams are generated. On the one hand, a first oxygen outlet is created, intended for the treatment of the wound, where the need for this gas is less than the initial oxygen flow, and, secondly, at least a second current with the excess oxygen coming from the fountain.

Thus, a main current of oxygen, corresponding to the first outlet of the splitter, is conducted to an oxygen distribution medium for the wound, once a part of the initially introduced oxygen flow has been withdrawn, preventing the wound from being exposed to overoxygenation that could lead to epithelial damage.

In a preferred embodiment, the oxygen flow rate at the outlet of the delivery means for treating a wound is a low flow, ie, less than less than 50 ml/h. Specifically, it is an operating flow of 3-20 ml/h, and more preferably in the range 3-15 ml/h.

On the other hand, the excess oxygen is conducted through at least one side stream to a means for releasing excess oxygen. The excess oxygen removed by the divider and directed to the delivery medium can be used to improve both the environmental conditions around the wound and other areas of the patient where greater aeration is required. Specifically, in a In a preferred embodiment, the excess oxygen can be released by expelling the oxygen to the contact area between the patient and the surface where he is prostrate.

In this sense, the release of oxygen in this second stream allows, unlike other solutions present in the state of the art, to aerate and oxygenate the skin, keeping said area dry and free of moisture, reducing sweating and avoiding maceration of skin. the skin.

This translates into the reduction of the damage generated by the limitation of movement, preferably in said bedridden patients. This characteristic favors the treatment of wounds in patients, preferably with reduced mobility, where the little movement can generate an increase in the damaged area, through sores or other conditions.

In another aspect of the present invention, a dressing comprising padding protecting the wound and the previously described device is protected. The dressing protects the wound to be treated while the introduced oxygen benefits the wound healing process. The presence of a waterproof dressing favors the absorption of oxygen in the lesion.

However, the increase in oxygen not absorbed by the tissue would increase the positive pressure, and could destabilize the dressing used.

For this reason, in a preferred embodiment, the dressing is at least partially gas permeable, allowing excess oxygen to be released from the wound without affecting the dressing. In this sense, in an even more preferred embodiment, the dressing of the present invention is a dressing that is permeable towards the outside and impermeable towards the inside.

The entry of oxygen from the distribution medium to the patient's wound can be carried out by means of a direct or indirect supply.

In turn, the supply of oxygen directly to the wound can be carried out in various ways. In a first embodiment, there can be at least one opening on the side of the dressing through which to introduce the oxygen outlet of the distribution. Alternatively, the opening in the dressing for entry of the oxygen delivery medium may be through an opening in the padding of the dressing.

In indirect delivery solutions, a dressing comprising padding permeable to the delivered oxygen should be used. The padding of this dressing may be configured to evenly distribute oxygen to the wound. For its part, alternatively, the padding can have a lateral entrance for oxygen, where it would be released again homogeneously to the wound.

Furthermore, to achieve a correct fixation between the oxygen distribution medium and the dressing, said medium can comprise a fixation medium, for example, an adhesive; in contact with the outside of the dressing, achieving a fixed connection, once the dressing has been placed on the wound.

In another preferred embodiment, the dressing is hypoallergenic. In this sense, for the manufacture of this dressing, existing materials can be used, as long as these materials allow the introduction of pure oxygen into the affected area through a distribution medium.

Therefore, thanks to the present invention it is possible to achieve, in an easy and comfortable way, the use of a high flow of oxygen existing in most health centers for the treatment of wounds and ulcers, despite being initially counterproductive for said treatment.

On the other hand, the present embodiment manages to adapt the oxygen input to multiple oxygen sources, and unlike the solutions known in the art, the present solution allows this device to be adapted to its use both at a private level and in hospitals, especially for those bedridden patients. In this sense, the present device can be used with wall outlets, normally present in hospitals, or with oxygen cylinders.

In this way, the proposed device allows the adjustment of the appropriate oxygen flow for the treatment of a wound, favoring the aeration of the areas adjacent to the wound, which translates into an improvement in the patient's conditions.

Therefore, the present solution allows, on the one hand, to benefit the health system, by reducing treatment costs by reducing its time, as well as the possibility of prevention and the compatibility of this treatment with others already known in any of its degrees. injury (moisturisers, debriders, enzymes, etc.). On the other hand, this device has a direct impact on the treatment of patients, acting both in the initial phases and in advanced stages of the lesions, that is, it can be used both preventively (avoiding lesions) and treatment, shortening recovery times.

The figures show the following elements:

1. Wound treatment device

2. Oxygen flow inlet duct

3. Divider

4. Medium oxygen distributor

5. Oxygen releasing medium

6. Flexible conduit

7. Dressing

8. Patient

9. Surface on which the patient is lying

10. Padding of the dressing

Throughout the description and claims the word "comprise" and its variants are not intended to exclude other technical characteristics, components or steps. Furthermore, the word "comprises" includes the case "consists of". Other objects, advantages and features of the invention will be apparent to those skilled in the art in part from the description and in part from the practice of the invention. The following examples and drawings are provided by way of illustration, and are not intended to be limiting of the present invention. Furthermore, the present invention covers all possible combinations of particular and preferred embodiments indicated herein.

Brief description of the drawings

Figure 1 shows a preferred embodiment of a device for treating wounds by supplying oxygen.

Figure 2 shows an embodiment of a dressing with a device for the treatment of wounds by oxygen supply.

Figure 3 shows embodiments of a dressing with direct and indirect supply of oxygen to the wound to be treated.

Figure 4 shows an embodiment of a dressing with a device for the treatment of wounds by oxygen supply in a patient bedridden on a surface.

Detailed description of the invention

Figure 1 shows a preferred embodiment of a device for treating wounds (1) by supplying oxygen.

In this embodiment, it is seen that the wound treatment device (1) has an inlet conduit (2) connected to an oxygen source (not shown in the figure). This oxygen source is configured to generate an oxygen flow that favors the healing of the wound to be treated.

In a preferred embodiment of the solution, the oxygen source is a wall outlet present in health centers, or an oxygen cylinder, with an oxygen flow greater than that required by the wound to be treated. This type of cylinder can be found both in health centers and used individually by the patient. In an even more preferred embodiment, the pre-charged oxygen intakes or cylinders used as the oxygen source have an oxygen flow in the range 30-900 liters per hour.

The main advantage of this type of sources is that their use is widely extended in health centers today, so there is great availability and ease of access today.

The inlet oxygen flow reaches a divider (3). This divider (3) makes it possible to divide the inlet flow of said gas and adapt the necessary amount of oxygen to that required by the wound. In this way, at least two oxygen currents are generated at the outlet of the splitter (3).

In a preferred embodiment, the divider (3) has the ability to modify the flow of the first output current of the divider (3). In order to achieve said modification, the divider (3) comprises a flow regulator means between at least two values, facilitating the adjustment of the amount of oxygen required by the wound.

In a first embodiment, the main outlet stream from splitter (3) leads a predefined reduced oxygen flow to an oxygen delivery means (4) to the wound. That is, the oxygen flow is adjusted to the demand of the wound, avoiding the counterproductive effect that occurs when working in conditions of overoxygenation.

In a preferred embodiment, the oxygen distribution means (4) may comprise a flexible conduit (6) attached to the divider (3). In this embodiment, the supply of oxygen to the wound is achieved and, in addition, the provision of a flow of oxygen in a second area, remote from the wound, where said supply is beneficial.

The splitter outlet secondary stream (3) is led to an oxygen release medium (5). In a preferred embodiment, the excess gas is released through an oxygen release means (5) comprising a set of concentric holes that allows a homogeneous output of oxygen in a desired area of the patient.

In this sense, if the wound is located in an area where the patient supports himself, for example, the back, the oxygen-releasing medium is located in a position close to the dressing. If, on the other hand, the patient does not rest on the wound, and presents, for example, a wound in the stomach area, the excess oxygen current is conducted to another area where oxygen is needed, that is, to areas less aeration. In this sense, the secondary oxygen outlet current can be used to improve the aeration of patients, with special relevance in those cases where the patient is bedridden and does not have adequate natural aeration.

Figure 2 shows a dressing (7) comprising a device for treating wounds (1) by supplying oxygen.

In this Figure 2, a second aspect of the invention can be seen. In this case, an embodiment of a dressing (7) for wounds where the outlet of the medium oxygen distributor (4) to the wound is connected to said dressing (7). This embodiment can be used for the treatment of wounds such as, for example, pressure ulcers (PU) of grade I, that is to say when the reddening of the skin begins.

On the one hand, the dressing (7) protects the area affected by the wound and, together with the supply of oxygen through the wound treatment device (1), prevents loss of skin continuity while Other injuries are avoided by reusing the excess oxygen outside, preferably the area surrounding the wound, favoring the ventilation of that area.

For its part, in this preferred embodiment, it can be seen how the releasing medium (5) can be in direct contact with the divider (3), favoring the release of excess oxygen in the area surrounding the wound.

Through this configuration, an improvement in the healing process can be achieved in wounds where dressings are used for their coverage, by presenting an external oxygen supply according to the demand required by the wound to be treated, while at the same time reducing damage. of bedridden patients caused by lack of mobility.

Figure 3 shows embodiments of a dressing with direct and indirect supply of oxygen to the wound to be treated. In this way, different embodiments of the union between the oxygen distribution medium (4) and the dressing (7) can be seen in detail.

Thus, as shown in Figure 3a, the distribution means (4) can direct the oxygen directly to the wound, crossing the dressing through at least one opening on the side present in the dressing (7).

Alternatively, in Figure 3b, the inlet of the oxygen delivery medium (4) through the padding (10) of the dressing is shown. Again, the supply of oxygen to the patient's wound (8) is carried out directly.

However, in this alternative an embodiment is shown where the divider (3) is separated from the dressing (7). In this way, the presence of a flexible conduit (6) that connects the divider (3) with the oxygen outlet through the distributor means (4) located in the padding of the dressing (7) and the patient (8) can be seen. For his On the other hand, the second current, corresponding to the excess of the oxygen source used, can be directed to another area of interest, where the oxygen-releasing medium (5) is located. Of special interest is the contribution of this excess oxygen to the contact area of the patient (8) with the surface (9) where it rests. Therefore, with the present invention, the generation of other lesions in the patient (8), such as sores or other conditions, such as skin maceration, is reduced; mainly caused by the lack of ventilation between the patient's own body (8) and the surface (9) where it rests.

Another possibility is the indirect entry of oxygen into the wound, as seen in Figure 3c and 3d. To achieve this indirect supply, a dressing comprising a padding (10) permeable to the supplied oxygen must be used.

In the first place, Figure 3c shows the detail of a distribution medium (4) that penetrates along the padding (10) favoring the distribution of oxygen throughout the wound and surroundings. For its part, Figure 3d shows an embodiment where the padding (10) has a side entrance for oxygen.

On the other hand, Figure 3d shows an embodiment where the divider (3) and the release means (5) are in contact with the dressing (7). This embodiment is of special interest in that patient (8) who presents the lesion to be treated in the area of contact with the surface (9) on which he is prostrated, for example, the back. As can be seen in this figure, the first current directs a part of the oxygen from the used oxygen source towards a lesion covered with a dressing (7), while the excess of used oxygen is released through the releasing medium (5). ) towards the surface (9), not shown in the figure, improving the conditions of the contact area with the patient.

In a preferred embodiment, the oxygen distribution medium (4) comprises a fixing medium, for example, adhesive; in contact with the outside of the dressing (7), achieving a fixed connection, once placed on the wound, between the treatment device (1) and the dressing (7).

Finally, Figure 4 shows an embodiment of a dressing (7) with a device for treating wounds (1) by supplying oxygen to a bedridden patient (8) on a surface (9).

In those situations where patients are prostrated on a surface (9), whether in bed or on another equivalent surface, a lack of ventilation may occur in the contact area between the patient (8) and the surface (9). , which can cause harm (sores or other conditions) to the patient (8).

In this sense, the release medium (5) directs the oxygen to the existing contact area, between the patient (8) and the surface (9) on which it rests. As shown in the figure, by way of example, the patient (8) may have a wound to be treated in the abdomen.

Therefore, a flow of oxygen greater than that demanded by the wound will be introduced through the inlet conduit (2) and will reach the divider (3), where the main current will be directed to the distribution medium (4) once the flow has been adequate for the subsequent treatment to be carried out. For its part, the secondary current is conducted to the release medium (5) that will direct the excess oxygen to the contact area of the patient (8) and the surface (9) on which he is prostrated, favoring the aeration of that area.

Claims (14)

1. Device for treating wounds (1) in a patient (8) prostrated on a surface (9) comprising an inlet conduit (2) connected to an oxygen source configured to introduce an oxygen flow characterized in that it comprises a divider (3) configured to divide the inlet flow of oxygen into a main outlet stream from the divider (3) directed to a means of distributing oxygen (4) to the wound, and at least one secondary outlet stream from the divider ( 3) directed at an oxygen releasing medium (5) directed at a contact area between the patient (8) and the surface (9) where the patient (8) is prostrated. 2. Wound treatment device (1), according to claim 1, wherein the oxygen flow of the inlet conduit is in the range 30 - 900 l/h. 3. Device for the treatment of wounds (1), according to each of claims 1 to 2, where the main outlet current of the divider (3) that leads the flow of reduced oxygen to the oxygen distribution medium (4 ) has an oxygen flow of less than 50 ml/h, more preferably in the range 3-20 ml/h, and even more preferably in the range 3-15 ml/h. 4. Device for treating wounds (1), according to each of claims 1 to 3, wherein the divider (3) comprises a regulating means configured to modify the flow of the main output current of the divider (3) . 5. Wound treatment device (1), according to each of claims 1 to 4, wherein the oxygen distribution means (4) comprises a flexible conduit (6) attached to the divider (3). 6. Wound treatment device (1), according to each of claims 1 to 5, wherein the oxygen source is a continuous source. 7. Device for treating wounds (1), according to each of claims 1 to 6, wherein the oxygen release means (5) comprises a set of concentric holes configured for the outlet of the oxygen flow. 8. Device for treating wounds (1), according to each of claims 1 to 7, wherein the oxygen distribution means (4) comprises a fixing means. 9. Dressing (7) comprising a padding (10) for treating wounds characterized in that it comprises the device for treating wounds (1) according to each of claims 1 to 8. 10. Dressing (7) according to claim 9, wherein the oxygen distribution medium (4) is located inside the dressing, between the padding (10) and the wound to be treated. 11. Dressing (7) according to claim 10, wherein the padding (10) of the dressing has an opening for introducing the oxygen distribution medium (4). 12. Dressing (7) according to claim 9, wherein the oxygen distribution medium (4) is inside the padding (10) permeable to oxygen. 13. Dressing (7) according to claim 12, wherein the padding (10) has a lateral inlet in contact with the oxygen distribution medium (4). 14. Dressing (7), according to each of claims 9 to 13, wherein the dressing (7) is permeable to gases towards the outside.