58results about How to "Shorten the healing period" patented technology

The invention provides a multifunctional ordered medicine release medical coating film for acute trauma and a preparation method thereof. The multifunctional ordered medicine release medical coating film for acute trauma is characterized by comprising fiber formed through coaxial static spinning; the fiber comprises a bleeding stopping and pain relieving layer and an anti-bacterial healing promotion layer arranged in the bleeding stopping and pain relieving layer; the bleeding stopping and pain relieving layer comprises one or several kinds of materials from high molecular polymers, bleeding stopping factors dispersed into the high molecular polymers and pain relieving medicine; the anti-bacterial healing promotion layer comprises high molecular polymers, antibacterial medicine dispersed in the natural high molecular polymers, and mesoporous SiO2 particles loaded with bioactive factors. The preparation method is simple; the materials can be easily obtained; the treatment and the use are safe; the prepared multifunctional ordered medicine release medical coating film can be matched with different stages of the wound healing; the medicine or active substances required for wound healing can be timely and orderly released.

The invention relates to a porous bacterial cellulose skin repair material with a density structure and a preparation method thereof. The porous bacterial cellulose skin repair material with the 'upper dense and lower loose' structure similar to human skin is prepared by controlling the culture condition of bacterial cellulose and adding sustained-release microspheres in the culture process. A loose layer is tightly combined with a dense layer, so that obvious physical layering is avoided, and the structural continuity is good; and gradient changes of the structures are produced in the loose layer and the dense layer, and multiple pores distributed uniformly are formed in the loose layer, so that the upper dense and lower loose gradient structure of the human skin is simulated to the utmost degree. Cells easily enter the material, the healing period of a wound is obviously shortened, and proliferation of healed scars is effectively reduced; and good air permeability and water holding property of the bacterial cellulose are kept, the wound surface can be kept in a wet environment, and healing of the wound surface is facilitated. The forming process is simple, the culture period is short, the preparation process is environment-friendly, simple, convenient and quick, and the preparation cost is low.

The invention relates to a double-layer collagen dermal scaffold and a preparation method thereof; the double-layer collagen dermal scaffold comprises a collagen layer and a silicone layer; the collagen layer is a collagen sponge layer, and the silicone layer is a silicone mixture layer or a pretreated silicone mixture layer; the collagen layer induces cell migration and promotes proliferation and differentiation so as to accelerate the recovery of an affected part; along with the degrading of material, regenerated tissues integrated to tissues around are finally formed; the silicone layer is semipermeable membrane, which is capable of controlling water loss of the affected part, protecting the wound and avoiding infection, has good mechanical strength and helps suture and fix the double-layer collagen dermal scaffold; by combining collagen and the silicone layer, it is possible to accelerate the growth of granulation tissues; by controlling collagen concentration and pH value to control the degrading rate of the collagen layer, the silicone layer can be removed smoothly after the granulation tissue phase; by transplanting auto-epidermis, healing cycle can be shortened, healing quality can be improved, and scars are decreased.

The invention relates to a medical active carbon fiber dressing and a preparation method thereof. The medical dressing mainly consists of two layers of active carbon fiber materials and one layer of alginate fiber membrane, wherein an inner layer is formed by an active carbon fiber cloth, a middle layer and a compound layer are formed by an active carbon fiber mat and an alginate fiber membrane, and an outer layer is a fabric coated with a medical adhesive bonding layer which is formed by a breathable gauze or a non-woven fabric, so that the dressing can be conveniently fixed on the surface of a wound. The medical dressing has better adsorptive property and antibacterial property and capabilities of effectively absorbing effusions such as plasma, pimples and the like effused from the surface of the wound without bonding the wound, providing a wet environment needed for quick wound healing, promoting the growth of repair cells and reducing the dressing replacing time. The method provided by the invention is convenient, practical and efficient.

The invention discloses an orthopedic implanted device provided with a copper-bearing coating. Copper-bearing microspheres, which are different in concentration, are immobilized/dispersed into a polymer carrier on the surface of the orthopedic implanted device in a certain mode by a gradient, so that bio-functionalization of the orthopedic implanted device is achieved, wherein the functional copper-bearing microspheres can be immobilized in such modes as chemical grafting, physical blending, electrostatic interaction and the like. The orthopedic implanted device provided with the bio-functional copper-bearing coating, as being implanted into a body, can promote bone tissue healing, promote angiogenesis and inhibit bacterial infection, so that a problem on infection caused by implantation of the orthopedic implanted device can be avoided and the healing of damaged bone tissues can be accelerated.

The invention discloses a medical nano bio-coating and a preparation process thereof. The bio-coating is prepared through the following raw materials of nano-hydroxyapatite, tetracalcium phosphate, graphene quantum dots, strontium monophosphate, dopamine, calcium fluoride, magnesium fluoride, barium ditantalum hexaoxide, silver nitrate, gelatin, ammonium bicarbonate, polyethylene glycol, silk fibroin and phosphohumate. The bonding strength between the bio-coating provided by the invention and a substrate is high; meanwhile, the tenacity is improved, and the deficiency of large brittleness of traditional hydroxyapatite is overcome; and in addition, the bio-coating has good biocompatibility, capable of promoting adherency and growth of bone cells, increasing the repairing and healing rate and shortening the healing period, and good in application and popularization value.

The invention discloses a preparation method of silver-containing hydrogel. The method comprises the following steps: dissolving ethylene glycol chitosan in a solvent to prepare an ethylene glycol chitosan solution; dissolving silver nitrate in water, then adding glucan to form a stable colloidal solution, and dropwise adding a trisodium citrate solution to prepare a nano-silver colloidal solution; dissolving oxidized dextran in water to prepare an oxidized dextran solution; and uniformly mixing an ethylene glycol chitosan solution with a nano-silver colloidal solution, then adding an oxidized dextran solution to carry out Schiff base reaction, and freeze-drying to obtain the silver-containing hydrogel. The hydrogel disclosed by the invention has a uniform porous net structure, shows excellent mechanical property and antibacterial property, slowly releases silver ions, can also load medicines such as deferrimine and the like, ensures that the medicines are slowly and efficiently released, promotes revascularization, shortens a wound healing period, and has a relatively good treatment effect on refractory wounds.

The invention discloses a dental implant and an implanting method of teeth. The dental implant comprises an implanting screw, an implanting abutment and a locking screw, wherein the lower end of the implanting screw is connected with an alveolar bone, and the implanting abutment is arranged at the upper end of the implanting screw; the implanting abutment is fixedly connected with the implanting screw by adopting the locking screw; a plurality of central through holes are formed in the implanting screw in a penetrating manner, and are parallel to the axis of the implanting screw; a plurality of gradient micropores are formed in the surface of the implanting screw and are used for enabling osteoid and osteogen to grown in; and the gradient micropores are distributed in the radial directionof the implanting screw and are formed in a manner of penetrating through the diameter of the implanting screw. According to the dental implant and the implanting method of the teeth disclosed by theinvention, the central through holes and the gradient micropores are formed in the implanting screw, so that elastic modulus of the dental implant is reduced, the rising compatibility of the dental implant is improved, the failure of implantation caused by osteopenia is avoided; and moreover, the implanting method is simple in operation, is short in healing periods and has a better implanting effect.

The invention relates to the technical field of agricultural plantation and specifically relates to a grafting method of multiple varieties of camellia. The method comprises the steps that (1) scions are connected; (2) grafting is conducted, wherein the scions are connected at grafting positions of a stock and fixed by ropes; (3) the grafting positions are coated by solid agar, and an agar layer is formed; (4) a water absorption layer and the grafting positions are covered by a plastic thin film; (5) water injection is conducted every other two days through penetration of a needle through the plastic thin film; and (6) 40-60 days later, calluses at the grafting positions develop completely, the plastic thin film and the water absorption layer are removed, and the scions can grow and develop normally. The grafting method of the multiple varieties of camellia disclosed by the invention has the beneficial effects that a big camellia tree can be changed into a big camellia tree with multiple varieties, wherein the agar layer is smeared at joints between the stock and the scions, so moisturizing and nutrient absorption at the grafting parts can be promoted. Through use of the method disclosed by the invention, the germination rate of the grafted scions exceeds 95%; plants are robust; and the survival rate is high.

An elastic interlocking intramedullary nail fixed in a fractured bone comprises a main nail, a plurality of lock nails, an elastic element, a slide block, a main jackscrew, an auxiliary jackscrew and a tail cap. A large central hole and a small central hole are formed in the main nail, a plurality of radial locking holes are formed at the fixed end, and two slide holes and an auxiliary jackscrew hole are formed at the elastic end. The auxiliary jackscrew is connected in the auxiliary jackscrew hole. The lock nails are inserted into the locking holes and the slide holes. The elastic element, the slide block and the main jackscrew are arranged in the large central hole. The tail cap is connected at the outer end of the large central hole. The elastic interlocking intramedullary nail fixed in the fractured bone utilizes the elastic element to enable the lock nails at the elastic end to be capable of axially moving in the slide holes along the main nail and then driving the broken end of the fractured bone to move axially, thereby eliminating stress shielding effect of the broken end of the fractured bone, shortening a fracture healing period and being in conformity with the biomechanic fixing principle. In addition, interrupted stimulation of the broken end of the fractured bone facilitates the healing of the fractured bone, and the healing strength is high.

The invention provides swelling-eliminating, pain-relieving, itching-relieving and skin-nourishing hand-foot chap paste and a preparation method thereof. The paste comprises the following substances: a bletilla striata extraction liquid, a red date extraction liquid, a flowers carthami extraction liquid, a banana peel extraction liquid, an apple peel extraction liquid, a garlic extraction liquid, a radix polygonati officinalis extraction liquid, orange peel juice, egg oil, beewax, lithospermum soaked oil, sesame oil, a natural emulsifier GOC, an all-round emulsifier, glycerin, sodium carboxymethylcellulose, sodium alginate, essence, ethylparaben, distilled water, 1,2-propylene glycol and the like. Compared with the prior art, the paste has the advantages of being small in side effect, good in compliance, good in moisture retention and the like. As the extraction liquids, comprising a lot of polysaccharides, lipid, vitamins and the like, of natural medicines are adopted, the paste also plays roles of improving local blood circulation, nourishing and moisturizing skin, preventing bacteria and oxidization and delaying skin ageing while treating skin chap.

An interlocking intramedullary nail for treating bone fracture of leg is characterized by that it has elastic dynamic interlocking hole, several static interlocking holes, dynamic interlocking hole, and tail cap. It can speed up the healing of bone.

The invention discloses a high-precision environment control room, which comprises an airtight room, an air conditioning device, planting beds, humidifying devices, nutrient solution mother liquor containing devices, fresh air ventilators, carbon oxygen supply devices, oxygen supply devices, sterilization and disinfection devices, water purification devices and a control unit. The airtight room ispartitioned into an equipment chamber, a planting chamber and an air shower chamber. The planting chamber is provided with a workbench and the planting beds; the equipment chamber comprises the humidifying devices, the fresh air ventilators, the carbon oxygen supply devices, the oxygen supply devices, the sterilization and disinfection devices, the water purification devices and the control unit;the planting chamber is communicated with equipment in the equipment chamber. The environment control room is multipurpose and novel in structural design, germination acceleration can be realized, and aseptic operation in seedling growth and seedling grafting and efficient healing and strengthening after seedling grafting can be realized as well, so that efficient utilization of the equipment isrealized.

The invention belongs to the field of medical dressings and in particular relates to a chitosan hydrogel dressing and a preparation method of the chitosan hydrogel dressing. The chitosan hydrogel dressing comprises the following components in parts by weight: 1-5 parts of low-molecular-weight chitosan, 0.25-1 part of aloe, 1-3 parts of a percutaneous absorption accelerant, 0.05-1 part of a hemostasis material and 2-5 parts of water. The chitosan hydrogel dressing is easily absorbed by wound surfaces, is excellent in moisture penetrability and air penetrability, is capable of providing wet healing environment for wounds and facilitating the heating of the wounds, and has a hemostasis effect.

The invention discloses a double-negative-pressure drainage and flushing integrated device and method.The double-negative-pressure drainage and flushing integrated device comprises a first negative-pressure drainage and flushing assembly and a second negative-pressure drainage and flushing assembly.The first negative-pressure drainage and flushing assembly comprises a first flushing pipe, a first drainage pipe and a first negative-pressure drainage bottle connected with one end of the first drainage pipe; one end of the first flushing pipe is fixedly connected with the free end of the first drainage pipe, and the other end of the first flushing pipe is used for being connected with a flushing fluid injector. The second negative pressure flushing drainage assembly comprises a second flushing pipe, a second drainage pipe and a second negative pressure drainage bottle, and the connection relation is the same as the connection relation of all elements of the first negative pressure flushing drainage assembly.