81 results about "Hydrocolloid dressing" patented technology

The invention discloses a hydrocolloid dressing suitable for medical application and its preparation method. The hydrocolloid dressing comprises 5-40% of one or more styrene copolymers, 10-50% of tackifying resin, 20-60% of one or more hydrocolloids, 5-30% of tackifier and 0-5% of anti-oxidant. The method comprises the following steps: 1) softening in a mixer for 5-10 minutes under the temperature of 130-160 DEG C; 2) placing tackifying resin, a tackifier and an anti-oxidant in a softened styrene-isoprene-styrene segmented copolymer for mixing to obtain a premix; 3) adding hydrocolloid particles in the premix; 4) coating. The hydrocolloid dressing possesses good viscosity, and the high integrity can be kept after a great amount of biological fluid is sucked. The hydrocolloid dressing shows good performance on skin when being taken as a dressing.

The invention discloses a preparation method for medical hydrocolloid dressing. The preparation method comprises the following steps:,1, dissolving styrene-butadiene-styrene block copolymer, then adding aliphatic series petroleum resins, carrying out the reaction, slowly adding cyclane oil, raising the temperature, then adding N.N-dibutyl dithio amido formic acid, and keeping the temperature to form a component A; 2, mixing anhydrosorbitol fatty acid ester and a polyoxyethylene sorbitan fatty ester condensation compound at normal temperature to form a liquid state component B; 3, taking sodium carboxymethyl cellulose, carboxymethyl chitosan, calcium alginate fibers and solid silver corpuscles, crushing the calcium alginate fibers into short fibers, mixing the substances at normal temperature to form a component C; and 4, adding the component B into the component A, raising the temperature, slowly stirring the mixture evenly and then adding the component C, stirring and cooling down the mixture, carrying out the debubbling in the vacuum, reducing the temperature, forming the dressing onto antiseize paper through injection moulding, and covering a PU film on the surface of the hydrocolloid to form a finished product.

The invention discloses a dressing for medical use, a preparation method and an application thereof. The dressing comprises one or more of chitin derivative, chitosan derivative or water soluble chitin 1-100 wt%, water 0-99 wt%, and filler 0-60 wt%. The preparation method comprises respectively dissolving one or more of the chitin derivative, chitosan derivative or water soluble chitin into water to obtain 0.5-10 wt% aqueous solution, mixing intensively, adding 0-15 wt% filler, mixing intensively, vacuum de-bubbling to obtain hydrocolloid dressing, and subsequently obtaining filmy dressing, spongeous dressing or non-woven fabric dressing. The preparation method has simple process, and can be used for restoring skin wound such as operative incision in clinic, skin graft region, burn, scald, ulcer or bedsore.

The invention relates to a hydrocolloid dressing and a preparation method thereof. The hydrocolloid dressing sequentially comprises a backlining layer, a hydrocolloid layer and a peeling layer, wherein ingredients of the hydrocolloid layer comprise a styrene-isoprene block copolymer, mineral oil, gelatin, viscous resin, sodium carboxymethylcellulose and carboxymethyl chitosan; and a mixture hydrocolloid is coated on the backlining layer and then the peeling layer is covered on the mixture hydrocolloid. The hydrocolloid dressing can well absorb wound transudate, is applicable to wound with a small amount and a medium amount of transudate, and has high elasticity and autohesion and certain bacteriostasis.

The invention provides antibacterial hydrocolloid dressing and a preparation method thereof, and belongs to the technical field of medical dressing. The preparation method of the antibacterial hydrocolloid dressing is as follows: firstly, elastomers, tackifying resin, a plasticizer and an antioxidant are added into an internal mixer and mixed to prepare a hot-melt pressure-sensitive adhesive; hydrocolloid particles, polyvinyl alcohol, chitosan derivative and an antibacterial agent are added into the hot-melt pressure-sensitive adhesive and mixed; and the mixture is placed in a press vulcanizer for treatment, a waterproof polyurethane backing is coated with the treated mixture, release paper is covered, and a finished product is prepared after irradiation sterilization. The anti-bacterial hydrocolloid dressing prepared with the method has good antibacterial performance and has no safety risk; and the polyvinyl alcohol ingredient added in the preparation process is crosslinked during irradiation to form physical gel, the integrity of the dressing is effectively maintained, and the corrosion resistance of the dressing is improved.

The invention discloses amorphous hydrocolloid dressing formed by high-energy ray irradiation proper crosslinking. The amorphous hydrocolloid dressing disclosed by the invention has good deformability, film forming property, moisture retention, biocompatibility and wound healing facilitation, and can protect various surgical incisions, cover various acute and chronic wounds and wound surfaces, prevent infection, accelerate healing and relive cicatrization. The amorphous hydrocolloid dressing is suitable for the filling covering protection on various wounds with tissue defects and for the protection and treatment of the surgical incisions and burns and scales including the wound surfaces formed by chemical burns as well as various acute and chronic wounds and wound surfaces. Moreover, through radiation sterilization, the amorphous hydrocolloid dressing can be stored for a long time. The formula of the amorphous hydrocolloid dressing disclosed by the invention comprises the following components in percentage by weight: 2-8% of sodium carboxymethylcellulose, 1-6% of chitosan and the balance of water. The amorphous hydrocolloid dressing also can comprise 0.1-0.3% of silver nitrate or silver chloride, 3-8% of polyvinyl alcohol, 15-25% of propylene glycol and the like all by weight. The amorphous hydrocolloid dressing is subjected to high-energy ray irradiation proper crosslinking and sterilization, thus the irradiation dose is 5-15KGy.

The invention provides hydrocolloid dressing and a preparation method thereof. The hydrocolloid dressing at least comprises backlining, hydrocolloid and a stripping layer, wherein the hydrocolloid is arranged on the backlining; the stripping layer is arranged on the hydrocolloid; the hydrocolloid comprises the following components in percentage by mass: 30 to 50 percent of polyisobutene, 15 to 25 percent of polycationic compound, 15 to 20 percent of polyanionic compound and 10 to 35 percent of neutral polymer; the polycationic compound consists of at least one of chitosan salt and diethyl amino ethyl glucan; the polyanionic compound consists of at least one of pectin, sodium carboxymethylcellulose, sodium alginate, carrageenin and xanthan gum; and the neutral polymer consists of at least one of gelatin, locust bean gum and guar gum. The hydrocolloid dressing can form a wet healing environment at the wound position, has a good wound healing effect and excellent water absorbency and stability, is suitable for high-leachability wounds, has excellent softness and autohension, and is convenient to use.

The present disclosure provides a hydrocolloid dressing, comprising: a hydrocolloid layer; and a polymer film layer, disposed on the hydrocolloid layer; wherein the polymer film layer is formed by coating a polymer solution or a liquid polymer. The present disclosure also provides a method for preparing a hydrocolloid dressing, comprising: forming a hydrocolloid layer; coating a polymer solution or a liquid polymer on the hydrocolloid layer; and drying.

The invention belongs to the technical field of a medical apparatus, and discloses an antibacterial alginate hydrocolloid dressing and a preparation method thereof. The antibacterial alginate hydrocolloid dressing comprises, by weight, 10-30 parts of gelatin, 5-15 parts of modified sodium alginate, 10-20 parts of polyethylene glycol, 20-40 parts of polyvinyl alcohol and 0.05-0.1 part of antibacterial peptide D2A21. The preparation method includes preparation of a gelatin-modified alginate composite material, preparation of a polyvinyl alcohol and antibacterial peptide D2A21 fibrous membrane, and preparation of a hydrocolloid dressing. The method is simple and is low in cost. The prepared hydrocolloid dressing is great in water absorption and excellent in performance, and has good compatibility and antibacterial effect.

The invention relates to composite hydrocolloid and a preparation method thereof and a hydrocolloid dressing. The composite hydrocolloid is prepared from, by weight, 10-30 parts of epidermal growth factors, 10-30 parts of microcapsules, 20-40 parts of sodium carboxymethylcellulose, 0.5-5 parts of pectin and 40-100 parts of an adhesive. The EGF hydrocolloid dressing is wide in application range, can be suitable for nursing of various skin wound surfaces, has the functions of regenerating, repairing, inflammation diminishing, bacterium resisting and wound discharge adsorbing, constructs a wet environment beneficial for wound recovery, greatly increases the regeneration speed of wound tissue, improves the self repairing capacity of wounds, is beneficial for growth of regenerated tissue and can promote wound healing and effectively prevent scar forming.

The invention provides a hydrocolloid adhesive and a hydrocolloid dressing prepared from the hydrocolloid adhesive. The hydrocolloid adhesive comprises 15-60 wt% of adhesive substrate, 1-10wt% of acrylic acid segmented copolymer, 5-60wt% of hdrophilic polymer and 0-50wt% of tackifying resin. The acrylic acid segmented copolymer is used as an enhancing agent to obtain the hydrocolloid adhesive which has good integrity, low cold flow property and better flexibility.

The invention discloses a preparation method of a medical antibacterial hydrocolloid dressing, and belongs to the technical field of dressing preparation. The main chemical components of a spider webused in the preparation method provided by the invention are glycine, alanine and a small part of serine together with other amino acid monomer protein molecular chains, and this specific protein canachieve a coagulation effect of platelets. In the preparation method provided by the invention, sodium alginate is easily dissolved in water, belongs to hydrophilic polymers, has strong water holdingcapacity, and obtains sodium alginate oxide containing aldehyde groups. The method reduces the rigidity of chains, improves the solubility and degradability of sodium alginate in an aqueous solution.In addition, due to the introduction of an active group namely an aldehyde group, the partially oxidized sodium alginate can form hydrogel through chemical crosslinking with polymer compounds with amino groups and other groups, and the sodium alginate oxide can still promote cell growth, thus improving the medical performance of the hydrocolloid dressing in treating wounds, improving the efficiency of absorbing exudate, and having a broad application prospect.

The invention belongs to the field of medical dressings, and particularly relates to a continuous antibacterial hydrocolloid dressing and a preparing method thereof. The dressing is composed of a backlining layer, a functional layer dressing core and an isolation layer in sequence from bottom to top. The functional layer dressing core is prepared from, by weight, 15-20 parts of styrene-isoprene-styrene segmented copolymer (SIS), 15-20 parts of viscosity increasing resin, 10-15 parts of plasticizer, 10-15 parts of antioxidant and 30-50 parts of silver-loaded alginate microspheres. The continuous antibacterial hydrocolloid dressing has strong liquid absorption and humidity maintaining performance and has excellent continuous antibacterial performance, nanosilver contained in the hydrophilicsilver-loaded alginate microspheres in hydrocolloid is slowly released out of the silver-loaded alginate microspheres during liquid absorption swelling of alginate after the silver-loaded alginate microspheres make contact with blood or percolate, and the continuous antibacterial aim is achieved.

The invention discloses silver-carrying antibacterial hydrocolloid dressing and a preparation method thereof. The silver-carrying antibacterial hydrocolloid dressing is sequentially provided with a backing, a hydrocolloid functional dressing core and an isolation layer from top to bottom; the hydrocolloid functional dressing core is prepared from the following raw materials including sodium carboxymethylcellulose, an SIS thermoplastic elastomer, liquid paraffin, tackifying resin, an antioxidant, dioctyl adipate as a plasticizer, a bacteriostatic agent and a collaborative bacteriostatic agent. In a preparation process, the silver ion bacteriostatic agent and the plant extract collaborative bacteriostatic agent are added; with addition of the plant extract collaborative bacteriostatic agent, the addition concentration of the silver ion bacteriostatic agent is lowered when the antibacterial activity of the dressing is effectively improved; with addition of the silver ion bacteriostatic agent, the antibacterial wide adaptability and the antibacterial durability are both improved; and as the two bacteriostatic agents are used in a matching manner, a wound can be effectively prevented from being infected, and the silver-carrying antibacterial hydrocolloid dressing also has the advantages of blocking bacteria, absorbing exudate, avoiding wound adhesion, supplying an ideal wet healing environment for a wound, promoting healing of the wound and reducing formation of scars.

The present invention discloses an amorphous hydrocolloid dressing containing liposome, and a preparation method thereof. The amorphous hydrocolloid dressing comprises the following raw materials by mass: 10-40% of a liposome solution, 2-10% of polyethylene glycol (PEG) having a molecular weight of more than 1000, 10-35% of propylene glycol, 0.1-2% of polyvinyl alcohol (PVA), 10-35% of glycerol, 15-50% of a high water-absorbing substance, 0.1-2% of an antibacterial agent, 0.1-2% of an antioxidant, and 0.1-2% of an anti-inflammatory and anti-seepage material. According to the present invention, the three-step operation comprising liposome solution modification and hydrocolloid matrix preparation, hydrocolloid water-absorbing base particle dispersion and hydrocolloid dressing forming is performed to prepare the amorphous hydrocolloid dressing; and the amorphous hydrocolloid dressing has characteristics of good effect, rapid effect, no toxic-side effect, active anti-seepage effect, active antibacterial function, and healing promoting.

The invention provides a hydrocolloid adhesive, and the adhesive contains zinc diricinoleate. Preferably, the adhesive better comprises 1-10wt% of zinc diricinoleate; preferably, the adhesive also comprises the following components in percentages by weight: 15-60% of an adhesive substrate, 5-35% of a rubber elastomer, 5-60% of a hydrophilic polymer, and 0-40% of tackifying resin. The invention also provides an application of the hydrocolloid adhesive to preparation of a hydrocolloid dressing. The invention also provides the hydrocolloid adhesive, and the adhesive comprises a hydrocolloid adhesive layer, and the layer is formed by the hydrocolloid adhesive. The hydrocolloid adhesive has the capability for absorbing peculiar (smelly) smell, can keep viscosity and water absorption, is adapted to preparation of a wound dressing, and can reduce or eliminate peculiar (smelly) smell due to wound or stoma, so that troubles for patients due to the smell can be reduced or eliminated, and pleasure feeling for patients can be kept; the adhesive is good for body to recover as soon as possible, and is suitable for large scale promotion and application.

The invention provides a novel povidone-iodine antibacterial hydrocolloid dressing and a preparation method thereof. The preparation method comprises the following steps of: (a) adding styrene-isoprene segmented copolymer and mineral oil (medical-grade white oil) into an internal mixer at a temperature of between 120 and 170 DEG C, and softening for 5 to 10 minutes; (b) dosing tackifying resin and an antioxidant into the softened styrene-isoprene segmented copolymer, and mixing to obtain premix; (c) adding hydrocolloid particles, sodium carboxymethylcellulose and carboxymethyl chitosan into the premix; (d) uniformly spraying povidone-iodine into the mixture obtained in step (c) by using a povidone-iodine complex device; and (e) applying to a copolymer film or non-woven fabric, namely coating the hydrocolloid layer to a back-lining layer. The copolymer film or glassine paper is coated on the prepared hydrocolloid layer, which means that a release layer is coated on the hydrocolloid layer to obtain the povidone-iodine antibacterial hydrocolloid dressing. The povidone-iodine antibacterial hydrocolloid dressing has the advantages of reducing the side effect of antibiosis and improving the effect of constant antibiosis.

The invention provides double-layered foaming hydrocolloid dressing and a preparation method thereof. The double-layered foaming hydrocolloid dressing comprises a contact layer, a moisture absorption layer and a backing layer; the moisture absorption layer is arranged on the backing layer; the contact layer is arranged on the moisture absorption layer and made of foaming hydrocolloid; the foaming hydrocolloid comprises the following components: polyisobutene, sodium carboxymethylcellulose, croscarmellose sodium, SIS copolymers, pentalyn, antioxidant, ethylene propylene rubber, silver nitrate and mineral oil; the moisture absorption layer is made of hydrocolloid which comprises polyisobutene, sodium carboxymethylcellulose, croscarmellose sodium, SIS copolymers, pentalyn, antioxidant, ethylene propylene rubber and mineral oil. The foaming hydrocolloid layer provided by the invention can accelerate absorption of seepage and form a tendency of vertical conduction and has the effects of resisting bacteria, promoting wound healing in wet environment, reducing the probability of scar formation and eliminating inflammation.

The invention discloses a fructus forsythiae volatile oil medical hydrocolloid dressing that is formed by sticking two layers of materials, one layer of which is base mounting material, and the other layer is composed of the following components in terms of percentage by mass: 0.1%-10% of fructus forsythiae volatile oil, 1%-20% of water-soluble high polymer material, 10%-60% of rubber substrate, 0.01%-0.2% of antioxidant, 1%-9.7% of foaming agent and 0.1%-87.89% of water, wherein the total content of the above components is 100%. The method for preparing the dressing comprises the following steps of: first, adding a proper amount of water in water-soluble high polymer material so as to over-swelling the water-soluble high polymer material, then adding fructus forsythiae volatile oil to form I-phase solution, then adding antioxidant in the rubber substrate and evenly stirring to form II-phase solution, hybrid mixing I-phase solution and II-phase solution, adding foaming agent and rest water, fully stirring, transitively coating on the base mounting material, refrigerating and then unfreezing. The fructus forsythiae volatile oil medical hydrocolloid dressing has exact treatment effect, is safe and reliable, and has obviously economic benefits.

The invention relates to the technical field of medical supplies, and in particular relates to a hydrocolloid dressing with strong antibacterial capacity and a preparation method of the hydrocolloid dressing. The hydrocolloid dressing is prepared from the following raw materials in parts by weight: 35-55 parts of sodium carboxymethyl cellulose, 30-50 parts of carboxymethyl chitosan, 20-40 parts ofpolyurethane thermoplastic elastomers, 10-35 parts of sodium alginate, 5-20 parts of tackifying resin, 1-10 parts of a plasticizer, 10-15 parts of gelatin, 3-8 parts of alkyl starch ester, 1-7 partsof polyisobutene, 0.5-3.2 parts of an antioxidant, 0.5-4.5 parts of a fungicide, and 0.5-2.5 parts of a synergistic fungicide. For the prepared hydrocolloid dressing, the potential biosecurity risk ofthe product is reduced, the antibacterial rate of the product is improved, a moist heal environment is provided for the wound, meanwhile, the heal of the surface of the wound is also promoted, the hydrocolloid dressing provided by the invention has good autohension and elasticity, and can be softly applied to the surface of the skin, and a user feels comfortable.

The invention discloses double-layer hydrocolloid dressing and a preparation method thereof. The preparation method mainly comprises the following steps: 1, insulating and mixing a continuous-phase rubber matrix and a hydrophilic-phase hydrocolloid in a double-screw internal mixer to obtain hydrocolloid dressing; 2, pressing the hydrocolloid dressing by using a press vulcanizer to form a lower base material; and 3, coating hydrogel formed by dissolving acrylic acid, gelatin, ketoglutaric acid, methacrylate gelatin and N-hydroxy succinimide in deionized water on the lower base material, and performing curing under ultraviolet light to obtain the double-layer hydrocolloid dressing. The double-layer hydrocolloid dressing has excellent adhesion performance and liquid absorption performance ina wet environment, is compact in combination, cannot be layered after being soaked in a configured wound simulated solution for 24 hours. is non-toxic and harmless on human bodies, has a simple preparation process and relatively low production cost, and can be widely prepared and applied.

The invention relates to a preparation method of a nano-silver functional medical dressing. According to the invention, a high-molecular hydrophobic polyisobutylene adhesive, hydrophilic sodium carboxymethyl cellulose, nano-silver, and pectin are composed, such that the dressing is prepared. The dressing has dual functions such as skin bonding and wound exudate absorbing. Exudate is absorbed from the wound, such that a moist environment is formed, new tissue growth can be promoted, and wound healing can be promoted. The nano-silver medical functional hydrocolloid dressing also provides a continuous sterilization capability. The nano-silver can gradually enter the deep inside of the wound from the surface, such that sterilization can be carried out. Therefore, the sterilization concentration of the nano-silver is greatly lower than that of silver micro-particles. With the nano-silver, a defect of black-spot formation after the silver micro-particles are oxidized is overcome. The nano-silver hydrocolloid is suitable for wound nursing with severe infection and large-amount of exudate.

The invention relates to an LED (light-emitting diode)-based portable treatment device transmitting 670nm red light, which comprises an outer-layer canvas layer, an LED light-emitting device, an inner-layer replaceable disposable hydrocolloid dressing, an optical parameter controller and a power supply system, wherein the LED light-emitting device is connected between the outer-layer canvas layer and the hydrocolloid dressing by using plastic optical fiber cloth for forming a middle light-emitting layer, the LED light-emitting device is connected with the optical parameter controller and the power supply system, and an elastic magic tape is arranged on the upper surface of the outer-layer canvas layer. The LED-based portable treatment device can transmit the 670nm red light, and the light has the effects of anti-inflammation, detumescence, analgesia, spasmolysis, improving local blood circulation, adjusting nerves and immunologic function, dredging channels and collaterals and regulating qi and blood for skin ulcers, skin burns, skin scalds, acnes, infection, pain and other symptoms. The device is open and folding and can carry out flexible banding according to the size of different affected parts of a patient, further realize omnibearing 360-degree circular radiation treatment of the affected parts and be simple and easy for use and easy for popularization.

The invention relates to a bioactive glass hydrocolloid dressing for promoting wound healing and a preparation method and application thereof. The hydrocolloid dressing consists of a backing layer, a drug-containing colloid layer and an anti-sticking layer; the drug-containing colloid layer consists of a thermoplastic elastomer, tackifying resin, a plasticizer, an antioxidant, a water-absorbent colloid, acidic particles, bioactive glass and sanggenone G; and the bioactive glass consists of Na2O, CaO, P2O5 and SiO2, and the particle size is 40-60 [mu]m. The drug-containing bioactive glass hydrocolloid dressing of the invention has excellent adhesion performance, drug release performance and high water absorption capacity; the function of promoting wound healing and wound repair of the hydrocolloid dressing can be greatly enhanced; and the dressing is convenient to use, high in stability, low in irritation, and is especially suitable for treating chronic ulcerative wounds such as diabetic ulcers, diabetic feet and bedsores.