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496results about How to "Shorten healing time" patented technology

Deposition of calcium-phosphate (CaP) and calcium-phosphate with bone morphogenic protein (CaP+BMP) coatings on metallic and polymeric surfaces

The invention is a medical implantable device which is coated by the method according to the invention. The surface of the substrate used for the implantable device, in the raw condition, following a cleaning regime and physiochemical pretreatments, is coated using a biomimetic process in a supersaturated calcium phosphate solution (SCPS) to obtain the desired coating coverage and morphology maintaining a ratio of calcium to phosphorus pH, as well as solution temperature plays a major role in yielding precipitation of the proper phase of CaP so that composition, morphologies, crystal structures, and solubility characteristics are optimal for the deposition process. The biomimetic coating adds the attribute of osteoconductivity to the implant device. To maximize bone growth, the implant must also induce bone growth, or possess the attribute of osteoinductivity. This attribute is acquired by the use of therapeutic agents, i.e. bone morphogenic proteins (BMP), growth factors, stem cells, etc. The preparation of the SCPS solution is slightly altered so that during the immersion of the implant in the SCPS, the therapeutic agents are co-precipitated and bonded with the CaP directly on the underlying surface of the implant device. A final dipping process into a BMP solution provides an initial burst of cellular activity. For delivering stem and/or progenitor cell, after drying the dipped solution of BMP, the cells are cultured on the surface of the implant.
Owner:HERKOWITZ HARRY N

Porous complex gel-nanofiber oxygen permeation dressing and preparation method thereof

The invention discloses a porous complex gel-nanofiber oxygen permeation dressing and a preparation method thereof. The method comprises the following steps: obtaining a collagen nanofiber membrane by adopting a collagen solution by virtue of an electrostatic spinning method; performing chemical crosslinking on two natural and non-toxic macromolecule polysaccharides such as chitosan and alginic acid, and preparing complex gel; and preparing the porous sponge-nanofiber double-layer composite material in a freeze-drying mode, wherein the upper gel layer of the dressing is in a sponge state during drying and is in a gel state after moisture absorption. The biological wound dressing is prepared under the condition that any toxic chemical crosslinking agent is not added, the process is simple, and the safety is high. The prepared biological wound dressing disclosed by the invention has the characteristics of excellent oxygen permeation performance, water-absorbing quality, water permeability, moisture penetrability and high biocompatibility, a physiological wet environment of the wound surface can be maintained, wound healing and effective haemostasis are promoted, wound infection can be avoided, the recovery is accelerated, the wound surface can be effectively recovered, and the dressing is applied to multiple wound surfaces such as trauma, burns and ulceration.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Dressing composition used for inhibiting scars and accelerating wound healing and application thereof

The invention discloses a dressing composition used for inhibiting scars and accelerating wound healing and application thereof. The dressing composition consists of chitosan, acidic polysaccharide and panax notoginseng saponins in a weight proportion of 100:10-50:10-100, wherein the chitosan is selected from chitosan, chitosan lactate, acetate and hydrochloride; the acidic polysaccharide is selected from sodium carboxymethyl chitosan, sodium hyaluronate, zinc hyaluronate, sodium alginate and sodium carboxymethyl cellulose; and the panax notoginseng saponins accounts for no less than 40.0 percent of the total weight of ginsenosides Rg1 and Rb1. The formulations of the dressing composition are xerogel powder, capsules, gel membranes, hydrogels and fiber coatings. The dressing composition is used for wounds, burns, scalds, crush injuries, skin ulcers, gastroenteric ulcers and no healing of the wounds, has the advantages of rapid hemostasis, exudate reduction, moisturizing, air permeability, bacteriostasis, inflammation diminishing, itch relieving, no adhesion, effective inhibition of scarring, remarkable reduction of wound healing time and no need of replacing dressings, so that thedressing composition basically meets requirements of perfect functional external dressings.
Owner:DALIAN UNIV OF TECH

Preparation method of titanium and titanium alloy surface black protective film for surgical implantation

The invention discloses a preparation method of a titanium and titanium alloy surface black protective film for surgical implantation, comprising the following steps: step 1: carrying out micro-arc oxidation coloring processing on titanium and titanium alloy surface to be processed, in the process, firstly, preparing a micro-arc oxidation electrolysing solution, and then carrying out the micro-arcoxidation coloring processing; and step 2: carrying out subsequent processing on the micro-arc oxidation film, wherein the subsequent processing comprises the following steps: firstly, preparing a mixed solution for hydro-thermal processing, completely dipping the titanium and titanium alloy after micro-arc oxidation shading processing in the mixed solution, carrying out the hydro-thermal processing on the surface by adopting a hydro-thermal method, drying the titanium and titanium alloy under the condition of low temperature when the hydro-thermal processing is completed, and generating a layer of pure black micro-arc oxidation film with uniform and plump surface on the titanium and titanium alloy surface. The invention has simple and convenient operation, economy, high production efficiency, and high bonding strength between a generated ceramic film, i.e. the micro-arc oxidation film and a substrate, and the invention can effectively overcome various defects and deficiencies which exist in the prior coating processing techniques.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH

Nano-hydroxyapatite/polyether-ether-ketone composite material and bone repair body as well as preparation method and application thereof

InactiveCN104974467ASimple processAdjustable preparation processProsthesisApatiteStress shielding
The invention discloses a nano-hydroxyapatite / polyether-ether-ketone composite material and a bone repair body as well as a preparation method and application thereof. The preparation method of the composite material comprises the following steps: uniformly mixing 30-35wt% of 200nm-1mu m hydroxyapatite powder and 65-70wt% of 5-15mu m polyether-ether-ketone powder to obtain mixed powder; and processing the mixed powder and moulding to obtain the composite material. The composite material has good biocompatibility and bioactivity as well as mechanical properties matching the bone tissue, effectively prevents the stress shielding effect, and can stimulate bone growth, accelerate bone healing, shorten the healing time of the injury after material implantation of bone and reduce the probability of second operation. The preparation technology of the composite material can be adjusted to prepare bone repair bodies different in shape, specification and mechanical properties to meet the clinical needs. Inflammatory reaction is avoided after the implantation of the bone repair bodies, the mechanical properties are matched with human bone, negative effects such as bone repair material loosening and bone resorption are prevented, and the clinical needs for bone repair can be met.
Owner:SHENZHEN KEJU NEW MATERIAL

Tissue wound repairing material and related product preparation method thereof

The invention discloses a tissue wound repairing material and a related product preparation method thereof, relating to the field of tissue wound repairing. The tissue wound repairing material is prepared from a component A and a component B in a weight ratio of 1:1, wherein the component A comprises 10-25 parts of bioactive glass, 3-15 parts of medical glycerol, 1-5 parts of medical liquid paraffin, 1-3 parts of polyethylene glycol 400 and 30-65 parts of medical vaseline; and the component B comprises 1-30 parts of plant essential oil, 0.5-5 parts of medical chitosan, 0.1-2 parts of sodium hyaluronate, 0.001-0.005 part of triethanolamine, 0.001-0.005 part of medical preservative and 0.01-0.05 part of carbomer. The preparation method comprises the following steps: mixing the component A and the component B in parts by weight at 80-130 DEG C, carrying out homogeneous stirring and vacuum defoaming to obtain gel, and then, filling and sterilizing the gel to obtain pasty tissue wound repairing gel; and coating and baking the gel, and then, cutting, sub-packaging and sterilizing the gel to obtain a dressing type tissue wound repairing material. The prepared tissue wound repairing material is high in healing promoting speed, capable of inhibiting scars, wide in range of application and convenient to operate.
Owner:HANDAN WARREN MORE TECHNICAL DEV CO LTD

Stepless adjustable skin stapler

The invention provides a stepless adjustable skin stapler, and belongs to the apparatus for operation. The stepless adjustable skin stapler comprises a block shaped double sticky tape. The stepless adjustable skin stapler is characterized by further comprising a flexible wire, a main pull buckle, a secondary pull buckle, a hook and loop fastener connected to the end of the flexible wire, a fabric piece used for fixing or releasing the hook and loop fastener, and release paper, wherein the main pull buckle and the secondary pull buckle are respectively composed of a main adhering piece, a secondary adhering piece, a main pull buckle column and a secondary pull buckle column; the other end of the flexible wire, connected with the hook and loop fastener, is fixed on the neck of the secondary pull buckle. The test result shows that the stepless adjustable skin stapler meets the demand on opening a stapled wound and also realizes continuous fine adjustment of wound stapling force, thus the potential risk that the wound healing is seriously influenced by excessive tightening, staggering of skins in both sides of the wound, and non-uniform stressing on different parts of a nonlinear wound during stapling can be avoided; the blood microcirculation of the wound skin is prompted, the wound is sped up to heal, and the wound healing period is reduced from 11 to 12 days in the prior art to 8 to 9 days, which is close to the healing period of the wound stapled with the traditional medicinal needle and line.
Owner:ZHENJIANG HENGSHENG JUANEN MEDICAL DEVICES

Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating

The invention provides a preparation method of a magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating, relates to a method for preparing a pure magnesium bioactive coating composite material, and aims to solve the problems of low bonding strength and poor biocompatibility of a coating and a base in a bioactive coating composite material. The method comprises the following steps: 1, roughly grinding and cleaning a pure magnesium sample; 2, preparing an Na2SiO3 electrolyte A and a KOH electrolyte B, mixing the two electrolytes, and adding KF to obtain a micro-arc oxidation electrolyte; 3, regulating parameters of micro-arc oxidation equipment, and performing micro-arc oxidation on the sample to prepare a coating composite material; and 4, sequentially soaking the rinsed coating composite material in an HF solution and a silane coupling agent, thus completing preparation of the bioactive coating. According to the invention, the bonding strength of the coating and the base in the obtained bioactive coating is high; and meanwhile, magnesium fluoride and magnesium silicate in the oxidation layer ensure favorable biocompatibility.
Owner:JIAMUSI UNIVERSITY

Composite, raw material composition, bone repair body, preparation method and application

The invention discloses a composite, a raw material composition, a bone repair body, a preparation method and an application. The raw material composition of the composite comprises the following components of tantalum material powder and polyaryletherketone powder, wherein the volume ratio of the tantalum material powder to the polyaryletherketone powder is(1:4) to (1:1), and the particle diameter of the tantalum material powder is 100nm-5 [mu]m. The composite prepared by the composition has favorable bioactivity and compatibility, is good in mechanical properties, can promote cell adhering,proliferation and polarization, can stimulate bone growth, can accelerate bone healing, and can reduce healing time after a bone implant material is implanted. The bone repair body prepared by the composition cannot cause inflammatory reaction after being implanted, the mechanical properties of the bone repair body including modulus of elasticity, toughness, rupture strength and the like, can cooperate with human bones, and the bone repair body cannot cause negative effect of loosening of the bone repair material caused by stress shielding, bone absorption and the like, and can meet requirements of clinical application for bone repair.
Owner:上海禾麦医学科技有限公司
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