Bioenergy hybrid-twisted filament and use thereof

By using hemostatic dressings and wound dressings made of bioenergy mixed filaments containing far-infrared radiating nanoparticles, the problems of insufficient hemostatic ability and wound scarring of existing hemostatic products are solved, and the effects of rapid hemostasis and scar reduction are achieved.

WO2025200181A1PCT designated stage Publication Date: 2025-10-02CHINA GOOD INT LTD
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Patent Information

Application Number
PCT/CN2024/105436
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-03-28
Filing Date
2024-07-15
Publication Date
2025-10-02

AI Technical Summary

Technical Problem

Existing hemostatic products such as cotton gauze and chitosan gauze still have insufficient hemostatic ability and are prone to leaving scars after wound healing.

Method used

Bioenergy mixed twisted filaments containing far-infrared radiating nanoparticles are used to make bioenergy yarns and fabrics by twisting first filaments and second filaments, which are used to make hemostatic dressings and wound dressings. The first filaments are composed of nanoparticles and a polymer matrix, and the second filaments are composed of a polysaccharide material such as chitosan.

Benefits of technology

It achieves rapid hemostasis and significantly reduces scar formation after wound healing, providing excellent wound healing effect.

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Abstract

A bioenergy hybrid-twisted filament and uses thereof, comprising bioenergy yarns, bioenergy fabrics and products made therefrom. The bioenergy hybrid-twisted filament comprises a first filament and a second filament that are hybrid-twisted, the first filament comprising a first polymer matrix and nanoparticles dispersed within the first polymer matrix, and the nanoparticles comprising elements selected from the following group: gold, silver, titanium, germanium, zinc, aluminum, magnesium, silicon, copper, calcium, iron, barium, potassium, sodium, manganese, nickel, gallium, platinum, and combinations thereof; the material of the second filament is different from that of the first filament.
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Description

Bioenergy twisted filaments and their applications Technical Field

[0001] The present invention relates to a bioenergy mixed twisted filament and its application, including bioenergy yarn, bioenergy woven fabric and products made therefrom. Background Art

[0002] Bleeding is an immediate risk associated with open wounds, especially when encountering heavy bleeding on the battlefield, during emergency first aid, or during surgery. Rapid hemostasis can effectively prevent the victim from experiencing hypotension, hypothermia, hemorrhagic shock, and even death due to excessive bleeding. Therefore, to reduce the likelihood of such incidents, the industry has long been committed to developing more effective hemostatic products. Technical issues

[0003] Common hemostatic products include cotton gauze and hemostatic bandages, which stop bleeding from open wounds through a combination of pressure and fluid absorption. In recent years, due to their superior biocompatibility, biodegradability, and antibacterial properties, polysaccharide fibers such as chitosan and alginate have been incorporated into the development of hemostatic products, such as chitosan gauze. However, the hemostatic capabilities of existing hemostatic products remain limited. Technical Solutions

[0004] The inventors of this case have discovered that hemostatic products made with bioenergy blended filaments that emit far-infrared rays (also referred to herein as "bioenergy") can achieve excellent hemostatic effects. This finding is surprising, as far-infrared rays are generally believed to promote blood circulation and be detrimental to hemostasis. The research also revealed that by further combining polysaccharide filaments with far-infrared filaments as the blending material for the bioenergy blended filaments, a wound dressing with excellent wound healing properties can be produced, effectively addressing the problem of scarring after wound healing.

[0005] Therefore, an object of the present invention is to provide a bioenergy twisted filament comprising a first filament and a second filament that are twisted together, wherein:

[0006] The first filament comprises a first polymer matrix and nanoparticles dispersed in the first polymer matrix, wherein the nanoparticles comprise an element selected from the group consisting of gold (Au), silver (Ag), titanium (Ti), germanium (Ge), zinc (Zn), aluminum (Al), magnesium (Mg), silicon (Si), copper (Cu), calcium (Ca), iron (Fe), barium (Ba), potassium (K), sodium (Na), manganese (Mn), nickel (Ni), gallium (Ga), platinum (Pt), and combinations thereof; and

[0007] The second filament is of a different material than the first filament.

[0008] In some embodiments of the present invention, the fiber fineness of the first filament and the second filament is independently 1 denier to 5 denier.

[0009] In some embodiments of the present invention, the lengths of the first filament and the second filament are independently 10 mm to 50 mm.

[0010] In some embodiments of the present invention, the first polymer matrix is ​​selected from the group consisting of polyester, polyethylene terephthalate (PET), polyurethane (PU), polyvinyl chloride (PVC), polypropylene (PP), polyamide (PA), amine-containing polymers, silicone, and combinations thereof.

[0011] In some embodiments of the present invention, the second filament is made of a material selected from the group consisting of plant fibers, animal fibers, regenerated fibers, semisynthetic fibers, synthetic fibers, and combinations thereof. In some embodiments of the present invention, the second filament is made of a material selected from the group consisting of polysaccharides, cotton, rayon, silk, heparin, polyester, linen, wool, polyurethane, polyamide, polypropylene, and combinations thereof. In some embodiments of the present invention, the second filament is made of a polysaccharide, wherein the polysaccharide is selected from the group consisting of chitosan, hydroxymethyl cellulose, cellulose, collagen, alginate, and combinations thereof.

[0012] In some embodiments of the present invention, the weight ratio of the first filaments to the second filaments is 15:85 to 80:20.

[0013] Another object of the present invention is to provide a bioenergy yarn comprising the bioenergy twisted filaments as described above.

[0014] Another object of the present invention is to provide a bioenergy fabric comprising the bioenergy yarn as described above, wherein the bioenergy fabric may have a knitted structure.

[0015] In some embodiments of the present invention, the bioenergy fabric further comprises metal yarns.

[0016] Another object of the present invention is to provide a product made from the above-mentioned bioenergy fabric.

[0017] In some embodiments of the present invention, the product is a hemostatic dressing, wherein the second filament of the bioenergy twisted filament is made of cotton or polysaccharide.

[0018] In some embodiments of the present invention, the product is a wound dressing, wherein the material of the second filament of the bioenergetic twisted filament is a polysaccharide.

[0019] Another object of the present invention is to provide a method for hemostasis, comprising covering a bleeding site of an individual with a hemostatic dressing made from the bioenergy fabric described above. Examples of the hemostatic dressing include, but are not limited to, hemostatic gauze and hemostatic bandages.

[0020] Another object of the present invention is to provide a method for promoting wound healing, preventing scar formation, and / or reducing scarring, comprising covering an injured area of ​​an individual with a wound dressing made from the aforementioned bioenergy fabric. In some embodiments of the present invention, the wound dressing is a bandage, gauze, acne patch, or cosmetic tape.

[0021] In order to make the above-mentioned objectives, technical features and advantages of the present invention more obvious and easy to understand, some specific implementation plans and drawings are described in detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 1A and 1B are scanning electron microscope (SEM) images of Au nanoparticles having an SP2 core-shell structure ( FIG. 1A : 2,000 times; FIG. 1B : 10,000 times), wherein the Au nanoparticles were coated on a glass slide by spin coating for observation.

[0023] 2A to 2D are SEM images of Au nanoparticles having an SP2 core-shell structure ( FIG. 2A : 9,500 times; FIG. 2B : 17,000 times; FIG. 2C : 18,000 times; FIG. 2D : 55,000 times), wherein the Au nanoparticles were coated on a glass slide by drop coating for observation.

[0024] 3A to 3D are SEM images of the first filament containing Au nanoparticles ( FIG. 3A : 60 times; FIG. 3B : 600 times; FIG. 3C : 2,500 times; FIG. 3D : 50,000 times), wherein the arrows in FIG. 3A and FIG. 3C indicate the Au nanoparticles.

[0025] FIG. 4 is a photograph of a first filament containing Au nanoparticles, wherein the first filament has a fiber fineness of 1.5 denier and a length of 38 mm.

[0026] 5A to 5C are photographs of an embodiment of the bioenergy yarn of the present invention, wherein the bioenergy yarn is made of bioenergy twisted filaments obtained by twisting first filaments containing Au nanoparticles with chitosan filaments as second filaments.

[0027] FIG. 6A is an X-ray image of an embodiment of a bioenergy fabric according to the present invention, wherein the bioenergy fabric comprises nine stainless steel yarns.

[0028] 6B to 6D are photographs of an embodiment of the bioenergy fabric of the present invention, wherein the bioenergy fabric comprises 3 ( FIG. 6B ), 5 ( FIG. 6C ), and 8 ( FIG. 6D ) stainless steel yarns, respectively.

[0029] FIG. 7 is a photograph of one embodiment of an article of the present invention, wherein the article is a hemostatic dressing. Best Mode for Carrying Out the Invention

[0030] Some specific embodiments according to the present invention will be described below; however, without departing from the spirit of the present invention, the present invention can also be practiced in a variety of different forms of solutions, and the scope of protection of the present invention should not be interpreted as being limited to the specific embodiments described in the description.

[0031] Unless otherwise specified, the terms "a", "an", "the" and similar terms used in this specification (especially in the claims) should be understood to include both singular and plural forms.

[0032] As used herein, the numerical range (e.g., 5 to 100) should be understood to also include all rational numbers in the range and ranges consisting of any rational numbers in the range. Therefore, the numerical ranges used in this specification include all possible combinations of numerical values ​​between the lowest value and the highest value listed.

[0033] Unless otherwise specified, the terms “first,” “second,” and the like used in this specification and the claims are merely used to distinguish between described elements or components and have no special meanings in themselves and are not intended to refer to a sequential order.

[0034] 1. Bioenergy mixed filaments

[0035] The bioenergy twisted filament of the present invention comprises a twisted first filament and a second filament, or is essentially composed of the twisted first filament and the second filament, or is composed of the twisted first filament and the second filament.

[0036] The fiber fineness of the first and second filaments can be between 1 and 5 deniers, for example, 1 denier, 1.5 denier, 2 deniers, 2.5 deniers, 3 deniers, 3.5 deniers, 4 deniers, 4.5 deniers, or 5 deniers, or a range between any two of these values. In a preferred embodiment of the present invention, the fiber fineness of the first and second filaments is independently between 1.5 and 3 deniers. For example, the fiber fineness of the first and second filaments can be 1.5 denier.

[0037] The first filament and the second filament are preferably staple fibers. Specifically, the length of the first filament and the second filament can each independently be 10 to 50 mm, for example, 10 mm, 12 mm, 15 mm, 18 mm, 20 mm, 23 mm, 25 mm, 27 mm, 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 43 mm, 45 mm, 47 mm, or 50 mm, or a range between any two of the foregoing values. In a preferred embodiment of the present invention, the length of the first filament and the second filament can each independently be 25 mm to 40 mm, for example, 38 mm. Without being limited by theory, it is believed that the first filament and the second filament having a length within the above range can achieve the best twisting effect.

[0038] In the bioenergy twisted filaments of the present invention, the first and second filaments can be twisted in any ratio depending on actual use needs, without particular limitation. For example, the weight ratio of the first and second filaments can be 1:99 to 99:1. In preferred embodiments of the present invention, the weight ratio of the first and second filaments can be 15:85 to 80:20, such as 5:95, 10:90, 15:85, 20:80, 25:75, 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60:40, 65:35, 70:30, 75:25, 80:20, 85:15, 90:10, or 95:5, or within a range between any two of the aforementioned values. For example, the weight ratio of the first and second filaments can be 1:4. Within the above-mentioned preferred range, the bioenergy blended filaments of the present invention can provide better inventive effects. Among them, hemostatic products made with the bioenergy blended filaments can achieve better hemostatic effects. Moreover, wound dressings made with the bioenergy blended filaments and polysaccharide filaments can effectively promote wound healing and significantly improve the problem of scarring left by wounds.

[0039] 1.1 First filament

[0040] The bioenergy twisted filaments of the present invention may include one or more first filaments. The first filaments comprise a first polymer matrix and nanoparticles dispersed within the first polymer matrix, or consist essentially of the first polymer matrix and the nanoparticles dispersed therein, or consist of the first polymer matrix and the nanoparticles dispersed therein. The nanoparticles are capable of emitting far-infrared radiation and comprise elements selected from the group consisting of Au, Ag, Ti, Ge, Zn, Al, Mg, Si, Cu, Ca, Fe, Ba, K, Na, Mn, Ni, Ga, Pt, and combinations thereof. Preferably, the nanoparticles comprise at least one of Au and Ti.

[0041] The nanoparticles used in the present invention can be prepared by the following methods: gas condensation, liquid phase reduction, and mechanical alloying. Examples of liquid phase reduction methods include, but are not limited to, coprecipitation, sol-gel, microemulsion, hydrothermal / solvothermal synthesis, template, and biomimetic synthesis. In some embodiments of the present invention, nanoparticles prepared by the sol-gel method have a core-shell structure. For example, nanoparticles with a core-shell structure can be prepared by the following steps: a metal precursor containing the desired element and deionized water are placed in an Erlenmeyer flask, heated to boiling while stirring, and a sodium citrate aqueous solution is added dropwise to the Erlenmeyer flask while boiling; after boiling for 15 to 25 minutes, the mixed solution in the Erlenmeyer flask is allowed to cool naturally to room temperature; a polyvinylpyrrolidone (PVP) solution is added to the Erlenmeyer flask and heated again to 60°C to 80°C while stirring for 20 to 40 minutes to prepare a solution containing PVP-coated metal nanocores; sodium citrate and a silicon-containing material are added to the solution containing PVP-coated metal nanocores, and the pH of the solution is adjusted to 5 to 7 with sodium bicarbonate to obtain the desired nanoparticles. In a specific embodiment of the present invention, Au nanoparticles with a core-shell structure are used.

[0042] In some embodiments of the present invention, examples of the metal precursor include, but are not limited to, tetrachloroalcohol (HAuCl4), titanium tetrachloride (TiCl4), tetrapropoxytitanium, titanium tetra-n-butoxide, platinum tetrachloride, platinum (II) acetylacetonate, silver nitrate, zinc chloride, zinc nitrate, and the like. Examples of the silicon-containing material include, but are not limited to, silanes, siloxanes, silane ethers, silanols, silicon alkoxides, silicon-based chlorides, and silazoles. Examples of silanes include, but are not limited to, methylsilane, methyltrimethoxysilane, methyltriethoxysilane, propyltrimethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, n-octyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, dimethyldimethoxysilane, tetramethoxysilane, tetraethoxysilane (TEOS), ethyltriacetoxysilane, cyclohexylmethyldimethoxysilane, and dicyclopentyldimethoxysilane. Examples of siloxanes include, but are not limited to, polydimethylsiloxane, polymethylhydrogensiloxane (PMHS), polydiethylsiloxane, polymethyl(3-glycidyloxypropyl)siloxane (PMGS), hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethyltrisiloxane, octamethylcyclotetrasiloxane, and decamethyltetrasiloxane. Examples of silyl ethers include, but are not limited to, trimethylsilyl ether, triethylsilyl ether, tert-butyldimethylsilyl ether, and triisopropylsilyl ether. Examples of silanols include, but are not limited to, trimethylsilanol, triethylsilanol, and tri-tert-butylsilanol. In a specific embodiment of the present invention, the silicon-containing material is TEOS.

[0043] In some embodiments of the present invention, the first polymer matrix used in the first filaments can be selected from the group consisting of polyester, PU, ​​PVC, PP, PA, amino-containing polymers, silicone, and combinations thereof. In preferred embodiments of the present invention, the first polymer matrix can be a polyester, such as poly(butylene terephthalate) (PBT), polyethylene terephthalate (PET), or combinations thereof.

[0044] The first filament can be produced using existing methods in the art. Examples of such existing methods include full granulation, masterbatch, and injection molding. In the following examples, the masterbatch method is used to produce the first filament by mixing a biomass masterbatch containing nanoparticles with a polymer matrix masterbatch not containing nanoparticles in a specific ratio, extruding the mixture using an extruder and then spinning it using a screw.

[0045] 1.2 Second filament

[0046] The bioenergy twisted filaments of the present invention may include one or more second filaments, the second filaments being made of a material different from the first filaments. By combining filaments of different materials, the bioenergy twisted filaments of the present invention can provide excellent combined efficacy.

[0047] The second filament can be made of plant fiber, animal fiber, regenerated fiber, semi-synthetic fiber, synthetic fiber, or a composite fiber comprising two or more of the foregoing. Depending on the desired composite efficacy, the material of the second filament can be selected from the following group: polysaccharides, cotton, rayon, silk, heparin, polyester, linen, wool, polyurethane, polyamide (e.g., nylon), polypropylene, and combinations thereof. Examples of polysaccharides include, but are not limited to, chitosan, hydroxymethylcellulose, cellulose, collagen, and alginate. In a preferred embodiment of the present invention, the second filament is made of a polysaccharide. Research has found that the use of a polysaccharide in the second filament can synergize with the first filament, effectively promoting wound healing while minimizing scarring after wound healing.

[0048] 2. Bioenergy yarns and fabrics

[0049] The present invention also provides a bioenergy yarn, which comprises a plurality of bioenergy twisted filaments as described above, or is essentially composed of a plurality of bioenergy twisted filaments as described above, or is composed of a plurality of bioenergy twisted filaments as described above.

[0050] The bioenergy yarn of the present invention possesses excellent strength and can be woven alone or blended with other yarns to form bioenergy fabrics with woven structures. These woven structures offer numerous advantages. For example, non-woven structures obtained by hot-pressing short fibers to form bonded fabrics suffer from fiber shedding, which is unacceptable in many applications, particularly those in hemostasis and wound dressings. In contrast, the fibers of the bioenergy fabric of the present invention are secured by the woven structure, eliminating the problem of fiber shedding. Furthermore, the woven structure of the bioenergy fabric offers a higher specific surface area than non-woven fabrics, providing a larger contact area in hemostasis applications and enhancing hemostatic efficacy. The woven structure of the bioenergy fabric also offers better air permeability than non-woven fabrics, facilitating applications in wound dressings. In a preferred embodiment of the present invention, the bioenergy fabric has a knitted structure, which surpasses other woven structures in terms of specific surface area, air permeability, and ductility.

[0051] The types of the other yarns are not particularly limited and may be metal yarns, non-metallic yarns, or combinations thereof. Examples of metal yarns include, but are not limited to, metal and organic fiber composite yarns, metallized yarns, and pure metal yarns. Examples of materials for metal yarns include, but are not limited to, stainless steel, copper, iron, zinc, and combinations thereof. Examples of non-metallic yarns include, but are not limited to, cotton, linen, wool, silk, polyester, polyurethane, polyamide (e.g., nylon), polypropylene, polysaccharides, rayon, heparin, and combinations thereof. In one embodiment of the present invention, the biofabric comprises one or more stainless steel yarns, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 stainless steel yarns. The stainless steel yarns can be identified by X-rays, and therefore the biofabric is particularly suitable for use as surgical gauze.

[0052] 3. Products using bio-energy fabrics

[0053] The bioenergy fabrics of the present invention can be further manufactured into various products. Examples of such products include, but are not limited to, medical dressings, bedding (such as blankets, mattresses, and sheets), clothing (such as tops, pants, and underwear), chair cushions, eye masks, belts, protective gear (such as neck braces and elbow pads), shawls, and external patches. Examples of medical dressings include, but are not limited to, hemostatic dressings and wound dressings. Examples of hemostatic dressings include, but are not limited to, hemostatic gauze and hemostatic bandages. Examples of wound dressings include, but are not limited to, bandages, gauze, acne patches, and cosmetic tape.

[0054] In one embodiment of the present invention, a hemostatic dressing made from the bioenergy fabric of the present invention is provided, wherein the second filament of the bioenergy twisted filament is made of a material with high liquid absorption capacity, such as cotton or polysaccharide (such as chitosan).

[0055] In another embodiment of the present invention, a wound dressing made from the bioenergy fabric of the present invention is provided, wherein the material of the second filament of the twisted filament is preferably a polysaccharide, such as chitosan, to provide synergistic effects on wound recovery.

[0056] 4. Treatment

[0057] As described above, the hemostatic dressings made from the bioenergy fabrics of the present invention exhibit unexpectedly excellent hemostatic effects. Furthermore, wound dressings made from the bioenergy fabrics of the present invention can be used on open wounds, providing excellent wound healing and minimizing scarring. Therefore, the present invention also provides a method for hemostasis, comprising covering a bleeding area of ​​a subject with a hemostatic dressing (e.g., hemostatic gauze or hemostatic bandage) made from the bioenergy fabrics described above. Furthermore, the present invention provides a method for promoting wound healing, preventing scar formation, and / or reducing scarring, comprising covering an injured area of ​​a subject with a wound dressing (e.g., bandages, gauze, acne patches, and cosmetic tape) made from the bioenergy fabrics described above.

[0058] The above-mentioned individual can be a human or a non-human vertebrate. Examples of non-human vertebrates include, but are not limited to, livestock (e.g., cattle, horses, sheep, pigs, donkeys, and mules), poultry (e.g., chickens, ducks, and geese), companion animals (e.g., dogs, cats, rabbits, birds, hamsters, and guinea pigs), primates (e.g., monkeys, gorillas, and apes), etc.

[0059] 5. Examples

[0060] 5.1 Example 1: Production of Bioenergy Fabric

[0061] (1-1) Bioenergy mixed filaments

[0062] The inventors of this case prepared nanoparticles for subsequent experiments through the following two steps. In the first step, tetrachlorohydric acid (HAuCl4) and deionized water were placed in an Erlenmeyer flask and heated to a boil while stirring. An aqueous sodium citrate solution was then added dropwise to the flask while boiling. The mixture was then boiled for 15 to 25 minutes, and then allowed to cool naturally to room temperature. A polyvinylpyrrolidone (PVP) solution was then added to the flask and heated again to 60 to 80°C with stirring for 20 to 40 minutes to produce a solution containing PVP-coated gold nanocores. In the second step, a shell structure formed from tetraethoxysilane (TEOS) was prepared to encapsulate the PVP-coated gold nanocores. First, sodium citrate and TEOS were added to a solution containing PVP-coated gold nanocores, and the pH was adjusted to 5 to 7 with sodium bicarbonate to produce nanoparticles with an SP2 core-shell structure, in which the shell material was TEOS and the core material was gold nanocores, as shown in Figures 1A and 1B and Figures 2A to 2D.

[0063] The nanoparticles are thoroughly mixed with a dispersant and poly(butylene terephthalate) (PBT) in a mixer. The mixture is then extruded at a temperature of 230°C to 295°C to produce a far-infrared masterbatch.

[0064] The prepared far-infrared masterbatch was mixed with polyethylene terephthalate (PET) masterbatch at a weight ratio of 1:20 to form a mixture. The mixture was extruded at 265°C and spun through a screw spinner to form the first filaments (far-infrared filaments) shown in Figures 3A to 3D and 4. The fiber fineness was 1.5 denier and the fiber length was approximately 38 mm. The areas indicated by the arrows in Figures 3A and 3C are Au nanoparticles.

[0065] The first filament was mixed and twisted with a chitosan filament (fiber fineness: 1.5 denier; fiber length: 38 mm) as a second filament at a weight ratio of 1:4 to obtain a bioenergy mixed twist filament.

[0066] (1-2) Biomass Yarn

[0067] The bioenergy mixed twist filaments (1-1) are spun into bioenergy yarns, as shown in Figures 5A to 5C.

[0068] (1-3) Bioenergy fabrics

[0069] The bioenergy yarn (1-2) and the stainless steel yarn are woven into a bioenergy fabric containing the stainless steel yarn by a knitting method.

[0070] The biofabric containing stainless steel yarns was tested using an X-ray machine. The test results are shown in Figure 6A , showing that the biofabric containing stainless steel yarns contained nine stainless steel yarns. These results demonstrate that the biofabric containing metal yarns of the present invention is indeed X-ray-recognizable and is particularly suitable for use as surgical gauze.

[0071] 6B to 6D show the bioenergy fabrics of the present invention comprising different numbers of stainless steel yarns ( FIG. 6B : 3 yarns; FIG. 6C : 5 yarns; FIG. 6D : 8 yarns).

[0072] 5.2 Example 2: Hemostatic Function Test

[0073] The bioenergy yarn (1-2) was knitted into hemostatic dressings (hereinafter referred to as “GB (thick)” and “GB (thin)”) with thicknesses of 1.2 mm and 1 mm, respectively, as shown in Figure 7, for use in subsequent experiments.

[0074] In this example, Sprague-Dawley rats (male, 8 to 10 weeks old, weighing 250 to 300 g each) were used as an animal model. The rats were randomly divided into four groups (10 rats in each group). Hemostasis tests were performed using GB (thick), GB (thin), commercially available chitosan gauze (HB; purchased from Sigma-Aldrich, product number: C3646), and standard gauze (purchased from Medline, product number: PRM21424C).

[0075] Rats were placed on an operating table and general anesthetized with isoflurane. After confirming anesthesia, a surgical blade was used to create a transverse incision approximately 1 cm long in the right femoral artery to simulate acute bleeding, and a timer was started. Hemostasis was achieved by applying pressure to the wound site using GB (thick), GB (thin), HB, or standard gauze. The time required for hemostasis was recorded for each group of rats, and the average hemostasis time was calculated. The results are shown in Table 1 below.

[0076] Table 1

[0077] .

[0078] As shown in Table 1 above, GB (thick) and GB (thin) achieved hemostasis in only approximately 2 minutes and 3 minutes, respectively, significantly outperforming commercially available chitosan gauze (HB) (approximately 4 minutes) and standard gauze (approximately 24 minutes). These experimental results demonstrate that the hemostatic dressing of the present invention possesses excellent hemostatic efficacy.

[0079] The above embodiments are intended only to illustrate the principles and efficacy of the present invention and to illustrate the technical features of the present invention, and are not intended to limit the scope of protection of the present invention. Any modifications or arrangements that can be readily accomplished by one skilled in the art without violating the technical principles and spirit of the present invention are within the scope of the present invention.

Claims

1. A bioenergy twisted filament comprising a first filament and a second filament twisted together, characterized in that: The first filament comprises a first polymer matrix and nanoparticles dispersed in the first polymer matrix, wherein the nanoparticles comprise an element selected from the group consisting of gold, silver, titanium, germanium, zinc, aluminum, magnesium, silicon, copper, calcium, iron, barium, potassium, sodium, manganese, nickel, gallium, platinum, and combinations thereof; and The second filament is of a different material than the first filament.

2. The bioenergy twisted filament according to claim 1, wherein: The fiber fineness of the first filament and the second filament is independently 1 denier to 5 denier.

3. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The lengths of the first filament and the second filament are independently 10 mm to 50 mm.

4. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The first polymer matrix is ​​selected from the group consisting of polyester, polyethylene terephthalate, polyurethane, polyvinyl chloride, polypropylene, polyamide, amine-containing polymers, silicone, and combinations thereof.

5. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The material of the second filament is selected from the group consisting of plant fiber, animal fiber, regenerated fiber, semi-synthetic fiber, synthetic fiber, and combinations thereof.

6. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The material of the second filament is selected from the group consisting of polysaccharide, cotton, rayon, silk, heparin, polyester, linen, wool, polyurethane, polyamide, polypropylene, and combinations thereof.

7. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The material of the second filament is polysaccharide.

8. The bioenergy twisted filament according to claim 7, characterized in that: The polysaccharide is selected from the group consisting of chitosan, cellulose, collagen, alginate, and combinations thereof.

9. The bioenergy twisted filament according to claim 1 or 2, characterized in that: The weight ratio of the first filaments to the second filaments is 15:85 to 80:

20.

10. A bioenergy yarn, characterized in that: The invention comprises the bioenergy twisted filaments according to any one of claims 1 to 9.

11. A bioenergy fabric, characterized in that: The bioenergy yarn according to claim 10 is included.

12. The bioenergy fabric according to claim 11, wherein: It has a knitted structure.

13. The bioenergy fabric according to claim 11 or 12, characterized in that: Also contains metallic yarn.

14. An article made using the bioenergy fabric according to any one of claims 11 to 13.

15. The article of claim 14, wherein The invention relates to a hemostatic dressing, wherein the material of the second filament of the bio-energy twisted filament is cotton or polysaccharide.

16. The article of claim 14, wherein The invention relates to a wound dressing, wherein the material of the second filament of the bio-energy twisted filament is polysaccharide.

Citation Information

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