CN219127043U

CN219127043U - Hemostatic gauze

Info

Publication number: CN219127043U
Application number: CN202320872839.9U
Authority: CN
Inventors: 潘大庆; 王小营; 阎林胤
Original assignee: Beijing Kangyujian Medical Instrument Co ltd
Current assignee: Beijing Kangyujian Medical Instrument Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-06-06
Anticipated expiration: 2033-04-19

Abstract

The present utility model provides a hemostatic gauze comprising: gauze; the chitosan particle layers are respectively coated on the first surface and the second surface of the gauze; a first nonwoven fabric layer, the second side of which is sewn with the first side of the gauze coated with the chitosan particle layer; a second non-woven fabric layer, the first surface of which is sewed with the second surface of the gauze coated with the chitosan particle layer; the hemostatic gauze has the advantages of simple structure, high hemostatic speed, convenient use and no slag drop, and meanwhile, the chitosan particle layer in the hemostatic gauze has the functions of inhibiting bacteria and promoting healing, and can reduce wound infection.

Description

Hemostatic gauze

Technical Field

The utility model relates to the technical field of hemostatic gauze, in particular to hemostatic gauze.

Background

The chitosan is a product of removing partial acetyl of natural polysaccharide chitin, and has the advantages of rich sources, stable structure, safety, no toxicity and the like. Because of the positive charge, the blood-activating gel can adsorb and gather red blood cells and platelets to form primary thrombus, can quickly absorb water in blood to form gel substances, and can form thrombus to play a role in hemostasis. Under the condition of traumatic bleeding of daily accidents and battlefield injuries, the use of the chitosan hemostatic material can greatly improve the survival rate of the wounded. Hemostatic articles based on the clinical use of chitosan include granular, needle and gauze formulations, and the like. The chitosan hemostatic gauze is generally suitable for wounds with large bleeding amount, is simple to operate and rapid in hemostasis, but has the problem that chitosan particles are easy to fall off in the use process of the chitosan hemostatic gauze, and the hemostatic effect can be directly influenced.

Disclosure of Invention

The utility model aims to provide hemostatic gauze. Solves the problem that chitosan particles are easy to fall off in the using process of the hemostatic gauze.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a hemostatic gauze comprising:

gauze;

the chitosan particle layers are respectively coated on the first surface and the second surface of the gauze;

a first nonwoven fabric layer, the second side of which is sewn with the first side of the gauze coated with the chitosan particle layer;

and the first surface of the second non-woven fabric layer is sewed with the second surface of the gauze coated with the chitosan particle layer.

Optionally, the first surface of the gauze and the second surface of the first nonwoven fabric layer, and the first surface of the second nonwoven fabric layer and the second surface of the gauze are all stitched by a stitching thread.

Optionally, the gauze is made of medical absorbent cotton.

Optionally, the thickness of the gauze is 0.5-1.5mm, and the width is 7.5cm.

Optionally, the surface of the gauze is coated with medical glue, and the medical glue is made of polycaprolactone.

Optionally, the chitosan particle layer coated on the first surface and the second surface of the gauze has a loading capacity of 50-150g/m ² 。

Optionally, the coating area of the chitosan particle layer on the first surface of the gauze is equal to the area of the first surface of the gauze;

the coating area of the chitosan particle layer on the second surface of the gauze is equal to the area of the second surface of the gauze.

Optionally, the materials of the first nonwoven fabric layer and the second nonwoven fabric layer are polyvinyl alcohol fibers.

Optionally, the suture line is made of polyvinyl alcohol.

Optionally, the suture mode of the suture line is intermittent suture.

The scheme of the utility model at least comprises the following beneficial effects:

according to the scheme, the gauze is used; the chitosan particle layers are respectively coated on the first surface and the second surface of the gauze; a first nonwoven fabric layer, the second side of which is sewn with the first side of the gauze coated with the chitosan particle layer; a second non-woven fabric layer, the first surface of which is sewed with the second surface of the gauze coated with the chitosan particle layer; the chitosan particle layer in the hemostatic gauze has the functions of inhibiting bacteria and promoting healing, and can reduce wound infection.

Drawings

FIG. 1 is an exploded view of a structure of a hemostatic gauze provided by the present utility model when not sewn;

fig. 2 is a schematic diagram of a hemostatic gauze provided by the present utility model after suturing.

Reference numerals illustrate:

1-gauze; 2-a chitosan particle layer; 3-a first nonwoven layer; 4-a second nonwoven layer; 5-suture.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1, an embodiment of the present utility model proposes a hemostatic gauze comprising:

a gauze 1;

a chitosan particle layer 2, wherein the chitosan particle layer 2 is respectively coated on a first surface and a second surface of the gauze 1;

a first nonwoven fabric layer 3, the second side of the first nonwoven fabric layer 3 is sewed with the first side of the gauze 1 coated with the chitosan particle layer 2;

a second non-woven fabric layer 4, wherein the first surface of the second non-woven fabric layer 4 is sewed with the second surface of the gauze 1 coated with the chitosan particle layer 2.

In the embodiment, the hemostatic gauze comprises a gauze 1, a chitosan particle layer 2, a first non-woven fabric layer 3 and a second non-woven fabric layer 4, wherein a first surface of the gauze 1 is attached to a second surface of the first non-woven fabric layer 3 and is fixed in a sewing mode, and the chitosan particle layer 2 coated on the first surface of the gauze 1 is arranged in a sewing gap between the first surface of the gauze 1 and the second surface of the first non-woven fabric layer 3; similarly, the second surface of the gauze 1 is attached to the first surface of the second non-woven fabric layer 4, and is fixed in a sewing mode, and the chitosan particle layer 2 coated on the second surface of the gauze 1 is arranged in a sewing gap between the second surface of the gauze 1 and the first surface of the second non-woven fabric layer 4; the embodiment of the utility model has the advantages of simple structure, high hemostatic speed, convenient use and no slag drop, and meanwhile, the chitosan particle layer in the hemostatic gauze has the functions of inhibiting bacteria and promoting healing, and can reduce wound infection.

In an alternative embodiment of the present utility model, the first side of the gauze 1 and the second side of the first nonwoven fabric layer 3, and the first side of the second nonwoven fabric layer 4 and the second side of the gauze 1 are all stitched by stitching threads 5.

As shown in fig. 2, in the embodiment of the present utility model, the gauze 1 and the first nonwoven fabric layer 3 and the second nonwoven fabric layer 4 are stitched by the stitching thread 5, wherein the gauze 1 and the first nonwoven fabric layer 3 may be stitched by the first stitching thread, the gauze 1 and the second nonwoven fabric layer 4 may be stitched by the second stitching thread, and of course, the gauze 1, the first nonwoven fabric layer 3 and the second nonwoven fabric layer 4 may be stitched and fixed simultaneously by the stitching thread 5.

In an alternative embodiment of the present utility model, the gauze 1 is made of absorbent cotton for medical use.

In the embodiment of the utility model, the gauze 1 is made of medical absorbent cotton, has the characteristics of no odor, no smell, no color spots, good water absorption, soft, slender and elastic fibers, and is suitable for application of hemostatic dressings.

In an alternative embodiment of the present utility model, the thickness of the gauze 1 is 0.5-1.5mm and the width is 7.5cm.

In the embodiment of the utility model, the thickness of the gauze 1 is 0.5-1.5mm, the width is 7.5cm, and the length can be set to different specifications, so that the hemostatic gauze can be better adapted to wounds with various shapes, and the application scene is wider.

In an alternative embodiment of the present utility model, the surface of the gauze 1 is coated with a medical adhesive, and the medical adhesive is made of polycaprolactone.

In the embodiment of the utility model, the surfaces of the first surface and the second surface of the gauze 1 are coated with medical glue, and the medical glue is preferably polycaprolactone which has the characteristic of low sensitization.

In an alternative embodiment of the utility model, the chitosan particle layer 2 coated on the first surface and the second surface of the gauze 1 has a loading capacity of 50-150g/m ² 。

In the embodiment of the utility model, the loading amount of the chitosan particle layer 2 on the gauze 1 is 50-150g/m ² The chitosan particle layer 2 in the loading range is coated on the gauze 1 and is not easy to fall off, so that the falling rate of chitosan particles in the using process of the hemostatic gauze is reduced to a certain extent.

In an alternative embodiment of the present utility model, the coated area of the chitosan particle layer 2 on the first surface of the gauze 1 is equal to the area of the first surface of the gauze 1;

the coated area of the chitosan particle layer 2 on the second surface of the gauze 1 is equal to the area of the second surface of the gauze 1.

In the embodiment of the utility model, the coating area of the chitosan particle layer 2 is preferably equal to the area of the gauze 1, and the chitosan in the chitosan particle layer 2 has the effect of quickly stopping bleeding, so that the chitosan particle layer 2 is completely coated on the gauze 1, a user can intuitively judge the action position of the hemostatic gauze when the user stops bleeding on a wound through the hemostatic gauze, the effective utilization rate of the chitosan particle layer 2 is improved, and the problem of reducing the hemostatic effect of the hemostatic gauze due to artificial misjudgment is avoided.

In an alternative embodiment of the present utility model, the materials of the first nonwoven layer 3 and the second nonwoven layer 4 are polyvinyl alcohol fibers.

In the embodiment of the utility model, the first nonwoven cloth layer 3 and the second nonwoven cloth layer 4 are preferably soluble nonwoven cloth, and the soluble nonwoven cloth is preferably polyvinyl alcohol fiber, wherein the polyvinyl alcohol fiber is a water-soluble extremely safe polymer organic matter, is nontoxic to human bodies, has no side effect, has good biocompatibility, and particularly has wide application in aspects of ophthalmology, wound dressing and artificial joints such as aqueous gel in medical treatment, and the safety can be seen from the aspects of wound skin repair and eye drop products. The non-woven fabric made of PVA (polyvinyl alcohol) fibers can be dissolved in water, can be used for wrapping chitosan particles in the chitosan particle layer 2, prevents the chitosan particles from falling off, can automatically open when the non-woven fabric is applied, exposes the chitosan particles on gauze, is used for stopping bleeding rapidly, can effectively prevent the chitosan particles from falling off, and ensures the maximization of hemostatic efficiency.

In an alternative embodiment of the present utility model, the material of the suture thread 5 is polyvinyl alcohol; the suture line 5 is sewn in a discontinuous way.

In the embodiment of the utility model, the gauze 3 is connected with the first non-woven fabric layer 3 and the second non-woven fabric layer 4 through stitching, and the stitching is made of polyvinyl alcohol material and is a discontinuous stitching, so that the stitching mode is simple and firm, and the air permeability is better.

The working principle of the hemostatic gauze in the embodiment of the present utility model will be described below:

when an operator uses the hemostatic gauze, the packaging bag is opened according to the conventional operation, the product (namely the hemostatic gauze) is taken out, the hemostatic gauze is directly covered on the surface of a wound (or is filled into the wound), and the excessive hemostatic gauze is torn off;

pressing the wound for a few minutes (preferably 3 minutes); pressing is continued for a few minutes (preferably 3 minutes) if bleeding is still occurring until the hemostatic gauze is removed after complete hemostasis.

The hemostatic gauze has the hemostatic principle that chitosan has active amino groups, has positive charges, reacts with negative charges on the surfaces of erythrocytes of blood, causes the erythrocytes to adhere and gather at wounds in a large amount to form primary thrombus, can quickly absorb moisture in the blood and become gel-like substances to form thrombus, thereby realizing the hemostatic function and not depending on a conventional blood coagulation way.

The hemostatic gauze has the main application range that: the wound with large blood volume is suitable for local treatment of skin surface bleeding of lacerated wound, small wound and damaged wound, or deep arterial bleeding such as incised wound, sword wound, gunshot wound and the like and penetrating wound hemostasis.

The utility model passes through gauze; the chitosan particle layers are respectively coated on the first surface and the second surface of the gauze; a first nonwoven fabric layer, the second side of which is sewn with the first side of the gauze coated with the chitosan particle layer; a second non-woven fabric layer, the first surface of which is sewed with the second surface of the gauze coated with the chitosan particle layer; the chitosan particle layer in the hemostatic gauze has the functions of inhibiting bacteria and promoting healing, and can reduce wound infection.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims

1. A hemostatic gauze, comprising:

gauze (1);

a chitosan particle layer (2), wherein the chitosan particle layer (2) is respectively coated on a first surface and a second surface of the gauze (1);

a first nonwoven cloth layer (3), the second face of the first nonwoven cloth layer (3) is sewed with the first face of the gauze (1) coated with the chitosan particle layer (2);

and a second non-woven fabric layer (4), wherein the first surface of the second non-woven fabric layer (4) is sewed with the second surface of the gauze (1) coated with the chitosan particle layer (2).

2. Hemostatic gauze according to claim 1, characterized in that the first side of the gauze (1) and the second side of the first nonwoven layer (3) and the first side of the second nonwoven layer (4) and the second side of the gauze (1) are all stitched by means of stitching threads (5).

3. Hemostatic gauze according to claim 1, characterized in that the gauze (1) is of cotton wool for medical use.

4. Hemostatic gauze according to claim 1, characterized in that the gauze (1) has a thickness of 0.5-1.5mm and a width of 7.5cm.

5. Hemostatic gauze according to claim 1, characterized in that the surface of the gauze (1) is coated with a medical glue and the medical glue is made of polycaprolactone.

6. Hemostatic gauze according to claim 1, characterized in that the chitosan particle layer (2) coated on the first and second sides of the gauze (1) has a loading of 50-150g/m ² 。

7. The hemostatic gauze according to claim 1 characterized in that,

the coating area of the chitosan particle layer (2) on the first surface of the gauze (1) is equal to the area of the first surface of the gauze (1);

the coating area of the chitosan particle layer (2) on the second surface of the gauze (1) is equal to the area of the second surface of the gauze (1).

8. Hemostatic gauze according to claim 1, characterized in that the material of the first nonwoven layer (3) and the second nonwoven layer (4) is polyvinyl alcohol fibres.

9. Hemostatic gauze according to claim 2, characterized in that the suture (5) is of polyvinyl alcohol.

10. Hemostatic gauze according to claim 2, characterized in that the suture (5) is sewn in a discontinuous manner.