JPH0323173B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention absorbs blood associated with a wound into its own structure, converts the absorbed blood into a blood clot, and further transforms into a sore, which then closes the wound. This invention relates to an emergency hemostasis tool that stops further bleeding by occluding it.

(2) Background of the technology It goes without saying that when a wound bleeds profusely, prompt medical attention is required.
This is because if treatment is delayed, the probability of death is extremely high.

In recent years, not only has the frequency of serious injuries in accidents at factories, work sites, or traffic increased, but also when large earthquakes occur, especially in cities, buildings, etc. collapse, construction attachments, glass fragments, walls, etc. It is expected that many people will be injured or killed due to falling objects, indoor fixtures, cupboards, etc. Under such circumstances, calls to 119 and traffic would likely be paralyzed, and the injured would not be able to expect to receive aid or treatment from specialists at the scene. The purpose of emergency treatment when a wound occurs is to minimize bleeding from the wound by stopping the bleeding. Bandages, gauze, plasters, etc. are used to treat the wound, but these are of no use if there is a lot of bleeding.
A sling or tourniquet must be used. However, if they are used without accurate knowledge, they may cause damage to nerves or muscles, and ischemia due to bondage for more than an hour can cause peripheral circulation disorders.
There is a risk of tissue necrosis. Therefore, there is a need for a simple emergency hemostasis tool that can be used by any person to quickly stop the bleeding by simply applying it to the wound in the event of a profusely bleeding wound, and that does not pose the above-mentioned dangers.

(3) Conventional products and their problems Traditionally, tourniquets or slings have been used for emergency treatment of profusely bleeding wounds.

Most tourniquets are made of cotton, gauze, or cotton, wrapped in a combination or layered together, with strings attached at both ends. To use it, apply it to the wound, wrap the cord around the area you want to stop bleeding, and twist it up to stop the bleeding. In other words, the purpose of this method is to tightly tighten the blood vessels and stop the flow of blood, so if the correct method is not used, it can pose serious danger to the body as mentioned above. The effect of the sling is also the same. Therefore, appropriate medical knowledge is required to use this.
The only major problem is that it requires training and must be easily used by any number of people during the above-mentioned emergencies.

(4) Purpose of the Invention In view of the above-mentioned serious drawbacks of conventional products, the present invention provides a method for providing first aid that can be used in the event of a profusely bleeding wound, even if one has no knowledge or experience in the field of first aid.
To provide an emergency hemostasis tool that can quickly stop bleeding by simply applying it to a wound without requiring any other hemostasis method.

(5) Structure of the Invention According to the present invention, this purpose is to continuously integrate one pulp cotton aggregate and a skin layer formed by moistening the surface with water, applying pressure, and then drying. The pulp-cotton agglomerate and other pulp-cotton agglomerates having a powdered hemostatic agent are sandwiched and overlapped in a sandwich shape with a powdered hemostatic agent interposed therebetween, and the resulting structure is wrapped with an outer packaging material and integrated.
A supersaturated portion of blood flowing out from the wound and absorbed into one pulp-cotton aggregate through the upper outer wrapping material is formed in one pulp-cotton aggregate, the blood is brought into contact with a hemostatic agent, and the serum in the blood is absorbed by the cortical layer. An emergency hemostatic device characterized by having a structure in which a blood clot is spread horizontally in the dry part of the other pulp-cotton aggregate, coagulates a blood clot in one pulp-cotton aggregate, and forms a sore in the wound area to close the wound and stop bleeding. This is accomplished by providing the tools. That is, wood pulp is finely crushed to produce pulp cotton, two pulp cotton aggregates of a desired thickness are prepared, one pulp cotton aggregate is left as is, and the surface of the other pulp cotton aggregate is soaked in water. the pulp-cotton layer is moistened with water, pressurized, and then dried to form a skin layer that extends integrally and continuously over the pulp-cotton layer that has not been wetted with water; The present invention provides an emergency hemostatic device in which the hemostasis and hemostatic agents are stacked together with a powdered hemostatic agent interposed between them, and the superimposed product is wrapped with an outer packaging material that allows blood to pass through, such as a nonwoven fabric.

(6) Embodiments of the Invention Before describing embodiments of the invention, it may be useful to mention the characteristics of the pulp-cotton aggregate and the cortical layer and the effect of hemostasis.

Regarding the formation of pulp-cotton aggregates, since the aggregates mentioned in the section of the constitution of the invention are aggregates of short fibers and do not have capillary action, the absorbed liquid (blood in the present invention) is retained only at the absorption site. , it does not permeate and diffuse into the peripheral area, that is, the dry area. Therefore, if absorption continues in such an aggregate, a supersaturated portion is formed.

In addition, under normal hemostasis, when blood flows out of a blood vessel, fibrinogen dissolved in plasma changes to insoluble fibrin, which traps blood cell components, creates viscosity, and forms a clot to stop bleeding. It is something that causes a tendency.

The composition of blood consists of 55% plasma components and 45% blood cell components, and the substances that cause blood coagulation are:
The fibrils and blood cell components in the plasma component, other than fibrin in the plasma component, serum (which is water) is useless during the coagulation stage. When there is a large amount of bleeding, the amount of serum increases at a greater rate than that of fibrin due to the composition ratio of the two, and this increase in serum amount delays the tendency to stop bleeding. In other words, serum not only does not play any role in the tendency to coagulate, but rather serves as a hindrance to coagulation.
For this reason, it is necessary to leave fibrin behind and remove serum more quickly to promote coagulation.

From the above viewpoint, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of the present invention, which comprises a pulp cotton aggregate 1 and another pulp cotton aggregate 3 having a skin layer 2.
This hemostatic device has a skin layer that is integrally continuous with the pulp cotton layer and extends in the horizontal direction, and a powdered hemostatic agent is interposed in the middle zone between the two layers, and the hemostatic agent is encapsulated.

In the same figure, 1 is one pulp cotton aggregate, 2
3 indicates a cortical layer, 3 indicates another pulp-cotton aggregate formed with a cortical layer, 4 indicates a powdered hemostatic agent, and 8 indicates an outer packaging material.
The outer packaging material 8 is made of, for example, a nonwoven fabric that allows blood to pass through. A pulp cotton aggregate 1 and a pulp cotton aggregate 3 having a skin layer 2 are integrated by overlapping a hemostatic agent 4 in the center in a sandwich-like manner. In the figure, it is attached onto the lower outer packaging material 8 for use.

Figure 2 shows that blood is locally absorbed into the pulp-cotton aggregate, sinks, reaches the hemostatic agent located in the intermediate zone, contacts it, tends to coagulate, and at the same time the serum in the plasma component is superimposed. This is a cross-sectional view to explain how blood is absorbed and diffused into the skin layer, synergistically promoting coagulation, accelerating the formation of blood clots, and then developing ulcers.The same parts as shown in Figure 1 are Although shown with the same reference numerals, a portion 5 surrounded by a dotted line is a supersaturated portion of blood, 5' is a blood clot, a hatched portion 6 is a sore, and a portion surrounded by a dashed dotted line 7 is a portion where serum has diffused. In use, the upper outer wrapping 8 as seen in FIG. 1 comes into contact with the injured human skin. In a preferred embodiment, the pulp cotton aggregate 1 has a thickness of 2.0 mm, the pulp cotton aggregate 3 having another skin layer 2 has a thickness of 2.0 mm, the skin layer 2 has a thickness of 0.8 mm, and the outer wrapping material 8 A commercially available non-woven fabric with this thickness is used for small wounds.
The hemostasis tool is completed by making it into an appropriate size within the standard range of 1.5 cm to 5 cm x 8 cm used for lacerations.

In FIG. 2, when a hemostasis tool is applied to a hemostatic area, blood is absorbed into the pulp-cotton aggregate 1 through an outer packaging material 8 that locally allows blood to pass through. Since the odor of the pulp-cotton aggregate 1 does not permeate or diffuse into the dry area, if blood continues to be absorbed, it will locally form a supersaturated area 5, and then come into contact with the hemostatic agent 4 present in the intermediate zone, causing a tendency to coagulate. It instantly becomes like a soft jelly, covering the wound and stopping the bleeding. The powdered hemostatic agent interposed here is preferably, for example, Japanese Pharmacopoeia throbin. The supersaturated portion 5 also contacts the superposed cortical layer 2. The skin layer 2 is formed by the above-mentioned method, that is, by moistening the surface of the pulp-cotton aggregate with water, applying pressure, and then drying it, so that a strong capillary action is produced because it is a layer with good moisture diffusion. As a result, the serum in the blood is spread horizontally to the surrounding dry area as shown by 7 in the figure. Thus, since the amount of serum that interferes with the coagulation tendency is reduced in the supersaturated region 5, the coagulation tendency is promoted more rapidly, facilitating the formation of blood clots 5'.

The blood clot 5' formed across the pulp-cotton aggregate 1 and the cortical layer 2 further loses residual serum as described above and gradually shrinks, forming a sore 6 from the edge of the blood clot 5'.
This closes the wound and achieves hemostasis.

(7) Effects of the Invention As detailed above, the emergency hemostasis device based on the present invention has a simple structure, and hemostasis can be performed by simply applying it to the hemostatic area and fixing both wings of the attached adhesive tape. It is possible, and it is highly effective since it does not require the use of hemostatic means.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the structure of an emergency hemostatic device according to the present invention, and FIG. 2 is a sectional view illustrating the aspect of blood coagulation in this structure. In the drawings, 1... one pulp cotton aggregate,
2... Cortical layer, 3... Pulp cotton aggregate having a cortical layer (the other pulp cotton aggregate), 4... Powdered hemostatic agent, 5... Supersaturated portion of blood, 5'... Blood clot, 6...
... Sore, 7... Serum diffusion part, 8... Outer packaging material.

Claims (1)

[Claims] 1. One pulp cotton aggregate and the other pulp cotton aggregate, which has a skin layer continuously and integrally formed by moistening the surface with water, applying pressure, and then drying, are The supersaturated portion of the blood that flows out from the wound and is absorbed into one pulp cotton aggregate through the upper outer wrapping material is formed by sandwiching and overlapping the structures in a sandwich-like manner with a hemostatic agent interposed therein and integrating them with an outer wrapping material. is formed into one pulp-cotton aggregate,
The blood is brought into contact with a hemostatic agent, and the serum in the blood is spread horizontally through the skin layer to the dry part of the other pulp-cotton aggregate, causing a blood clot to coagulate on one pulp-cotton aggregate and forming a sore at the wound site. An emergency hemostasis tool, characterized in that it is configured to block and stop bleeding.