74results about How to "Avoid secondary trauma" patented technology

The invention discloses postoperation anti-adhesion hydrogel and a preparing method thereof. The hydrogel is prepared from sodium alginate powder, chitosan powder, acrylamide monomers, N,N'-methylene bisacrylamide, calcium sulfate, ammonium persulfate and N,N,N',N'-tetramethylethylenediamine. The preparing method of the high-strength high-tenacity chitosan and sodium alginate compound hydrogel is easy to operate, parameters are controllable, the materials are easy to obtain, and the solvent is nontoxic or low in toxicity and safe to treat and use; the method integrates advantages of the two natural biological materials, and the requirement for postoperation adhesion prevention of patients and the requirement for nursing care and treatment of medical workers can be met well. The hydrogel is soft, can be attached to the skin easily, has good flexibility and can effectively prevent wound surface adhesion and be degraded and absorbed, secondary trauma is avoided, and the hydrogel is expected to become a novel postoperation anti-adhesion material.

The invention provides an antibacterial wound dressing and a preparation method thereof. The antibacterial compound type wound dressing is characterized by comprising a chitosan-based medicine carrying compound antibacterial ultrafine fibrous membrane, a calcium alginate fiber non-woven fabric and a supporting protective layer which are sequentially arranged from top to bottom. The medicine carrying ultrafine fibrous membrane obtained by adopting an electrostatic spinning method has the advantages that the surface area of a medicament can be effectively increased, medicines can be slowly and sustainably released by virtue of high porosity and uniform pore diameter of ultrafine fibers, so that the medicines can be fully absorbed by a human body, medication is not need to be carried out frequently, the effect of the medicines can be maintained, and toxic and side effects of the medicines are reduced.

The invention relates to a pneumoperitoneum-free peritoneoscope suspending type abdominal wall puncture device, and overcomes the defect that secondary trauma occurs easily to patients by using a kirschner pin to puncture into abdominal walls to suspend the abdominal walls. The puncture device comprises a sleeve and a plurality of supporting arms arranged on the sleeve in a central radial shape, wherein a deformation portion is connected to the end portion of the sleeve and connected with the supporting arms; and one ends of pull ropes are fixed on the end portion of the supporting arms, lugs with rope holes are arranged on the sleeve away from the deformation portion, and the other ends of the pull ropes penetrate through the rope holes in the lugs to be fixed on the outer portion of the abdominal wall. A supporting surface is arranged after the supporting arm is opened, and a barrel-shaped space is formed after the supporting arm is suspended, so that enough surgical fields are provided during the surgery; and the supporting arm of the puncture device is inserted from a cut of the abdominal wall and is opened gradually, so that the kirschner pin is not needed to perform puncture and suspension, the secondary trauma is prevented, and the puncture device is helpful for alleviating traumatic pains of patients.

The invention discloses a laparoscopic object obtainer and relates to a device for taking out and removing organs during surgical and gynecological abdominal cavity operations. The device comprises a casing gun and an elastic rigid sheet connected to the front end of the casing gun, wherein the elastic rigid sheet is provided with an object obtaining bag, the object obtaining bag is provided with a contracting ring along an opening, a binding rope is arranged in the contracting ring and extends outward, the elastic rigid sheet and the object obtaining bag are connected through connecting points, the object obtaining bag is made of high-strength TPU material, 20 to 40 of the connecting points exist between the elastic rigid sheet and the object obtaining bag, and the width of each connecting point does not exceed 20 wires. The object obtaining bag and the elastic rigid sheet adopt the connection of the connecting points and are easy to break, the object obtaining bag falls from the elastic rigid sheet, a bag mouth contracts at the same time, the casing gun can be easily drawn out of a casing sheath, and the object obtaining bag can be drawn out along with the casing sheath after the operation is finished, thus the secondary insult during the operation is avoided, the operation time is saved at the same time, and the problem that the object obtaining bag is torn during the drawing further to endanger the service safety is avoided due to the fact that the object obtaining bag is made of high-strength TPU material.

The invention discloses an injectable articular cartilage tissue repair material and is characterized in that starting materials of the composite material contain the following components of: by weight, 100 parts of I-type collagen and 10-50 parts of hyaluronic acid, wherein oxidisability of hyaluronic acid is 20-60%. A monocyte layer in bone marrow fluid in vivo is embedded in the repair material. The thickness of the composite material is 1-5mm. Hyaluronic acid is oxidized into oxidized hyaluronic acid by the use of sodium periodate. The collagen solution, 5*PBS and a buffer are mixed at the volume ratio of 7:2:1 and the pH is adjusted to neutral. After dissolving oxidized hyaluronic acid by the use of ultrapure water, the dissolved oxidized hyaluronic acid is added into the neutral collagen solution and the mixed solution is uniformly stirred and stands in a refrigerator of 4 DEG C. The separated and extracted monocyte layer in the bone marrow fluid by a density gradient centrifugation method is uniformly mixed with the above collagen-oxidized hyaluronic acid solution. The mixed liquor is putted into a constant temperature incubator of 37 DEG C for standing or injection to the organism articular cartilage defects so as to form the composite material.

The invention relates to the technical field of medical dressing, in particular to medical and antibacterial cationic biogel dressing and a preparation method thereof. The medical and antibacterial cationic biogel dressing comprises raw materials in percentage by weight as follows: glycerin, chitosan quaternary ammonium salt, amino-acid iodine, organosilicon quaternary ammonium salt, an indigowoad leaf extraction solution, a prunella vulgaris extraction solution, a paniculate swallowwort root extraction solution and the balance of purified water. The antibacterial dressing has a remarkable antibacterial effect, is transparent, high in water content, non-toxic, harmless, nonirritating and good in biocompatibility and adhesion, can isolate bacteria, kill bacteria, fungi and viruses and prevent skin and mucous membranes from infection, can stop bleeding and keep the wound wet and further can promote skin regeneration and healing of the wound. The medical and antibacterial cationic biogel dressing can be widely used for preventing and treating infection of skin wound such as skin bruise, scalding, burning, bedsore, ulcer, vagina skin eczema and the like and local mucous membrane infection of an oral cavity, the throat, gingivae and the like and can relieve pains, inhibit bacteria, protect wound, promote wound healing and inhibit scarring.

The invention discloses a staged acting antibacterial hydrogel dressing and a preparation method thereof. The method comprises the following steps: preparing an antibacterial layer, namely adding sodium polyacrylate into a nano-silver solution, stirring to form a colloid, and drying the colloid to obtain the antibacterial layer; preparing a water absorbing and sustained release layer, namely dissolving pearl powder and bezoar in a carboxymethyl chitosan solution to obtain a mixed solution, slowly adding sodium polyacrylate into the mixed solution, and stirring along with adding until a transparent colloid is formed; preparing a waterproof breathable layer, namely adding polyvinyl butyral powder into an absolute ethanol solution, and dissolving to obtain a transparent liquid; and assembling, namely pouring the transparent liquid into a plate which is 1.5-2.5mm thick, covering a non-woven fabric, spreading the transparent colloid of the water absorbing and sustained release layer on the non-woven fabric to obtain a mixed layer, baking the mixed layer to adhere the transparent colloid and the transparent liquid together, and adhering the antibacterial layer to the transparent colloid of the mixed layer. The staged acting antibacterial hydrogel dressing has the advantage of remarkable wound healing promoting effect.

The invention discloses a preparation method of a composite antibacterial dressing loaded with silver sulfadiazine. The preparation method comprises steps as follows: (1), bacterial cellulose is obtained through static fermentation of acetobacter xylinum; (2), the bacterial cellulose is beat after alkali washing to be prepared into a homogeneous-phase suspension liquid; (3), a sodium alginate solution is prepared; (4), silver sulfadiazine is subjected to ultrasonic treatment in water; (5), the sodium alginate solution, the bacterial cellulose homogeneous-phase suspension liquid and a silver sulfadiazine suspension liquid are mixed and prepared into a homogeneous-phase mixed liquid; the homogeneous-phase mixed liquid is poured into a die and cured with a 5% CACl2 solution, and the sodium alginate and bacterial cellulose composite antibacterial dressing loaded with silver sulfadiazine can be obtained after freeze drying. The preparation method is simple and easy to operate, the obtained composite antibacterial dressing keeps good moisture retention performance and biocompatibility, has a better inhibition function on escherichia coli, candida albicans and staphylococcus aureus and facilitates wound healing and skin regeneration, and the production process is simple.

The invention discloses a rat endotracheal intubation method and application. The method mainly comprises the following steps that an anesthetic rat is placed on the back and fixed, the upper and lower jaws of the rat are opened, the rat's glottis is exposed by means of a laryngoscope, and a tracheal tube, which is 6 to 7cm long, is directly inserted into the trachea, namely the opening and closing part of the glottis, by means of the observation of the laryngoscope; a thin steel wire is inserted into the tracheal tube and a small section of water column is inected; the water column movement change in the tracheal tube is observed, if the water column doesn't move or is sprayed out or sucked in violently, it means that the tracheal tube is enters the esophagus, and intubation is needed again; if the water column in the tracheal tube moves up and down rhythmically along with the animal's breathing frequency, it means that the tracheal tube is inserted into the trachea. The method is used for endotracheal intubation under the conditions of rat trachea administration, rat administration and molding, and rat pulmonary function detection and the like, and the method has the advantages of being simple, speedy, free of injuries, high in molding and administration success rate, accurate in pulmonary function detection and the like.

The invention relates to a sitting, lying and transporting cart for a patient, which belongs to the technical field of medical instruments. When being used for trauma patient in the transporting process, the prior stretcher with the design defect can not be suitable for the patient transportation on various roads and causes the patient to feel uncomfortable or be afflicted with new secondary trauma. Both side surfaces of a backrest canvas stretcher (19) and a lower-body canvas stretcher (20) are respectively and fixedly provided with a limiting belt (16) and a belt buckle (17), four embedded blocks (10) are respectively fixed on the backrest canvas stretcher (19) and the lower-body canvas stretcher (20), the backrest canvas stretcher (19) and the lower-body canvas stretcher (20) are hinged by hinges (24), and both side surfaces of the lower-body canvas stretcher (20) are respectively provided with a seat thread hole (5) and a stretcher thread hole (6). The sitting, lying and transporting cart has the advantages of novelty, creativity and practicability.

The invention belongs to the technical field of biomedical dressings and relates to an end-capped modified polyethylene glycol cross-linking agent having an ultraviolet light response function, a preparation method and a hydrogel dressing containing the cross-linking agent and a preparation method thereof. The technical problem is solved that wound pain and secondary wounds care caused by when anexisting hydrogel dressing is removed for secondary wound treatment. The modified polyethylene glycol cross-linking agent having the ultraviolet light response function is formed by adopting an injectable in-site gel forming mode, and the gel forming mode has very good adaptability to wound shapes and meanwhile has better fitting property compared with a blocky dressing to be gelled without auxiliary fixing materials. When wounds need to be further treated, regional selective irradiation can be performed through 10 mw/cm<2> ultraviolet light of 365 nm, gel softening and degradation are achieved. Compared with other dressings, the function can prevent wound pain during gel removal and prevent newly growing tissues from being physically harmed to cause secondary wounds.

The invention belongs to the technical field of medicine and health and particularly relates to a preparing method of a silver-containing anti-bacterial dressing. According to the method, degreased cotton gauze serves as a base dressing to be improved, at first, the degreased cotton gauze is subjected to carboxymethylation modification and endowed with a high hygroscopic property, then by means of the in-situ reduction effect, nanometer silver particles directly cover the modified degreased cotton gauze, the nanometer silver particles are combined with the degreased cotton gauze closely and do not fall off, and the obtained silver-containing anti-bacterial dressing has a high anti-bacterial property and a high hygroscopic property, does not stick to wounds and avoids secondary trauma and infection of the wounds, so that healing of the wounds is accelerated.

The invention discloses a medical dressing material and its preparation method. The medical dressing material comprises, by weight, 5-50% of alginic acid fiber, 1-15% of bamboo fiber and 40-90% of viscose fiber. The medical dressing material has effects of haemostasis and bacteriostasis, can absorb lots of pus and blood and form a humid microenvironment to promote growth and multiplication of cells and wound healing, is nonirritating to human body, and has no anaphylactic reaction. Especially by the application of bamboo fiber, wound infection and inflammation of patients are avoided due to natural antibiotic bacteriostasis effect of the bamboo fiber.

The invention provides a hydrogel, a preparation method thereof, a biomembrane fixing device and an application of the hydrogel, and relates to the technical field of biological materials. Raw materials of the hydrogel comprise a synthetic monomer, a solubilizer, a cross-linking agent, an initiator, a catalyst and water, wherein the synthetic monomer comprises hydroxyethyl methacrylate (HEMA) and/or a derivative of HEMA. The usage amount the raw materials are as follows: the mass ratio of the synthetic monomer to water is (0.5-20):1; the mass ratio of the solubilizer to water is (0.1-10):1; the mass ratio of the cross-linking agent to water is (0.001-0.5):1; the mass ratio of the initiator to water is (0.05-2):1; and the mass ratio of the catalyst to water is (0.05-2):1. The hydrogel has good biocompatibility, stability and hydrophilicity, excellent water absorption and swelling performance, good optical performance, high mechanical performance and soft texture. The biomembrane fixingdevice prepared by using the hydrogel has small foreign body feeling and is comfortable to wear.

The invention provides a preparation method of a medical dressing, which includes preparation of secreted PLGA sustained-release microspheres, preparation of a hydrogel, preparation of an electrospunmembrane, and preparation of a stem cell secretion medical dressing. In the invention, a combination of sub-totipotent stem cell secretin, PLGA sustained-release microspheres and hyaluronic acid hydrogel is used, and the electrospun membrane is used as a carrier to prepare the medical dressing, the sub-totipotent stem cell secretion is rich in various active factors, and has a good repair effect on wounds; Experiments show that the medical dressing prepared by the invention has a good healing effect on both acute and chronic wounds. The medical dressing can adhere to the wound well, and the sub-totipotent stem cell secretin in the PLGA sustained-release microspheres is slowly released, which greatly improves the utilization rate of the secretion and the durability, the PLGA slow-release microspheres contain a larger amount of subtotipotent stem cell secretions, which reduces the number of dressing changes, avoids secondary trauma during the dressing change, and facilitates wound repair.

The invention relates to an oral membrane for reconstruction of attached gingivae, and a preparation method thereof. The preparation method includes (1) dissolving type-I atelocollagen in an acid solution to prepare a collagen acid solution; (2) defoaming and freeze-drying the collagen acid solution to obtain sponge; (3) rolling the sponge to obtain the oral membrane, wherein the temperature of aroller is set as 30-40 DEG C. A compact and smooth film is formed on the surface of the oral membrane prepared by the preparation method, the mechanical properties are improved, and the oral membranecan be sewn; the artificial soft tissue transplant material does not need to be collected from patients themselves, so that the operation time is shortened, the occurrence rate of complications is reduced, and pain is relieved to the greatest extent.

The invention discloses an all-terrain wounded person on-site carrying backpack for single-person search and rescue. The all-terrain wounded person on-site carrying backpack comprises a head part assembly, a back part assembly, a buttock part assembly, lower limb assemblies and foot assemblies, wherein each assembly is composed of a folding frame and a functional assembly installed in a filling mode; the head part assembly, the buttock part assembly, the lower limb assemblies and the foot assemblies are folded back through folding frames to form a backpack shape; the back part assembly can berapidly transformed into a stretcher through a folding frame; meanwhile, the fixing devices correspondingly designed for all the assemblies can be used for fixing a head position, a cervical vertebraposition, a thoracic vertebra position and a lumbar vertebra position and fixing the pelvis and fixing lower limbs and feet, so secondary trauma in the carrying process can be avoided after a woundedperson is stably fixed. Through the design of the invention, the all-terrain wounded person on-site carrying backpack is suitable for carrying the wounded person in all terrains, can complete carryingof the wounded person by a single rescuer, has the advantages of portability, rapidness, effectiveness in carrying, body position protection of the wounded person, prevention of secondary injury of the wounded person and the like, is suitable for mountain jungle rescue, water surface rescue and helicopter suspension rescue, and has better practical application effect.

The invention discloses a medical band-aid with an adjustable opening, which comprises a first fixing part and a second fixing part that are mutually independent, wherein the sides, contacted with skin, of the first fixing part and the second fixing part are sticky; a plurality of movable connecting ends are connected between the first fixing part and the second fixing part; weakly sticky areas and strongly sticky areas are arranged at connecting parts between the connecting ends and the first fixing part or/and the second fixing part; and the weakly sticky areas or/and the strongly sticky areas are covered and bonded with a third fixing part. The connecting ends are further provided with adhesiveless areas, and the adhesiveless areas, the weakly sticky areas and the strongly sticky areasare sequentially connected. According to the medical band-aid, the tightness of a wound can be adjusted conveniently, and the medical band-aid facilitates quick healing of the wound and is convenientto use and strong in practicability.