77 results about "Deep wounds" patented technology

For defects that existing hemostasis research and products cannot intelligently perform self-propelling or cannot be driven to forward deep in the wound under the action of external field force, the invention provides a preparation method for a janus structure based rapid hemostatic agent having a directional propulsion function. The preparation method includes performing esterification on microporous starch to unidirectionally grow calcium carbonate particles so as to obtain esterified microporous starch/calcium carbonate Janus particles; fixedly assembling thrombin on the surfaces of the esterified microporous starch/calcium carbonate Janus particles to obtain esterified microporous starch/calcium carbonate Janus particles assembled with the thrombin; mixing the esterified microporous starch/calcium carbonate Janus particles assembled with the thrombin and protonated tranexamic acid powder so as to obtain the janus structure based rapid hemostatic agent having a directional propulsion function. Through the formation of the biphasic heterogeneous Janus structure, the unidirectional and intelligent self-propulsion of hemostatic starch can be realized by cooperating with the protonated tranexamic acid, so that rapid three-dimensional hemostasis on deep wounds, penetrating wounds and irregular wounds such as aortic / venous rupture can be realized.

The invention provides a multifunctional electrostatic spinning fiber dressing and a preparation method thereof, and belongs to the technical field of polymer medical materials. The fiber dressing isof a micro-nano structure, the electrostatic spinning method is adopted for spinning polymer materials with grafted functional groups into fiber, then, crosslinking is performed to obtain the fiber dressing, and the polymer materials have the function of stimulating macrophage transition. The invention further provides the preparation method of the multifunctional electrostatic spinning fiber dressing. The electrostatic spinning fiber dressing is obtained by grafting functional groups to polymer materials capable of promoting macrophage transition and then performing electrostatic spinning andcrosslinking, the fiber is soft and easy to fold and can well fit a superficial wound, a deep wound can also be filled with the fiber, and the fiber can achieve the multiple functions of stopping bleeding, resisting oxidation, resisting inflammation, resisting bacteria, promoting healing and reducing scars.

The invention discloses a preparation method for alginic acid/chitosan mixed sponge, and belongs to the field of bio-medical materials. The preparation method comprises the steps of uniformly mixing micron or nano-level indissolvable calcium salt powder and a sodium alginate solution to form a suspension; slowly adding a chitosan acid solution to the suspension, and performing stirring to form alginic acid/chitosan gel; and performing homogenization, defoaming and freeze-drying on the alginic acid/chitosan gel to obtain the alginic acid/chitosan mixed sponge. The alginic acid/chitosan mixed sponge prepared with the method is simple in process and low in energy consumption, and can be prepared only by one freeze-drying step; and the sponge has good water absorptivity and softness, can be folded at will, is nontoxic, good in bio-compatibility and safe to degrade, has anti-adhesion performance and other performance, can be widely applied to wound hemostasis and wound repair, and is especially suitable for nursing of severe exudates or deep wounds.

The invention discloses a phallic allogeneic accellular patch thickening and lengthening surgery. The surgery comprises the following steps that a V-shaped incision with the length of 4.0 cm is incised from the middle of the symphysis pubis to the two sides of the base of the penis, the skin and the subcutaneous tissue are sequentially incised, blunt dissection is performed to enable the penis, the shallow suspensory ligaments and the deep suspensory ligaments to be completely exposed, and an electrotome is utilized to transversely and downwards incise all the shallow suspensory ligaments and the deep suspensory ligaments to the crural penis; strict blood stopping is performed, a deep wound is washed with a gentamicin aqueous solution and sutured with a NO.7 suture in the mode of double number eight, the superficial fascia is longitudinally and closely sutured with a NO.4 suture, and the subcutaneous tissue and the skin are interruptedly sutured with a NO.1 suture. The phallic allogeneic accellular patch thickening and lengthening surgery has the advantages of being little in surgical trauma, short in surgical time, safe, painless, little in bleeding, rapid in postoperative recovery, high in anti-infection ability and ideal in treatment effect.

The invention relates to a disposable hemostatic dressing wound leading-in first-aid hemostasis instrument, and belongs to the field of medical apparatuses and instruments. The instrument comprises a hemostatic material loading component and a pushing component. The hemostatic material loading component is used for storing compression-pill-shaped or flake chitosan hemostatic materials, and the front end is packaged through waterproof and breathable silica gel materials; and the pushing component is used for rapidly pressing the hemostatic materials into a wound. The disposable hemostatic dressing wound leading-in first-aid hemostasis instrument is particularly rapid and reliable in hemostatic effect on firearm wounds, penetration wounds and deep pricking wounds which are smaller in body surface penetration wound, large in internal wound and large in bleeding amount in battlefield rescuing. The disposable hemostatic dressing wound leading-in first-aid hemostasis instrument has the advantages that the efficient hemostatic materials are led into the deep wounds; as for tissue deep bleeding parts where bleeding stopping through a tourniquet or pressing is not suitable, the device can achieve the effects of accurate positioning, rapid bleeding stopping and hemorrhagic shock and dead preventing. When traumas accidentally occur, self rescuing or other rescuing can be carried out, and the valuable rescuing time can be won. The device has the advantages of being efficient in bleeding stopping, easy and convenient to operate, low in cost, convenient to carry, long in storage time and convenient to use.

The invention discloses efficient hemostatic sponge. The efficient hemostatic sponge is prepared from the following raw materials in percentage by mass: 35%-60% of chitosan, 0.1%-0.5% of thrombin, 1%-3% of polyglutamic acid, 9% of sodium chloride, 20%-35% of sodium alginate, 5%-15% of sodium hyaluronate and 1%-5% of calcium chloride. The efficient hemostatic sponge comprises a surface layer and an inner layer, wherein the surface layer is an antibacterial hemostatic layer containing chitosan, thrombin, polyglutamic acid and sodium chloride; and the inner layer is a gel layer containing sodium alginate, sodium hyaluronate and calcium chloride. The inner layer of the hemostatic sponge is in direct contact with a wound and is capable of absorbing moisture in blood to form gel to block the wound so as to realize primary hemostasis; concentrated blood penetrates through the gel layer to enter the surface layer so as to realize further hemostasis with the combined action of thrombin and chitosan; immobilized thrombin on an outer layer in the hemostatic sponge is capable of enhancing the stability, preserves efficient hemostatic activity and is unlikely to enter blood to cause a thrombus risk; and the efficient hemostatic sponge is particularly applicable to rapid hemostasis of serious bleeding caused by deep wounds, arteriorrhexis and the like.

The invention discloses a super water absorbent medical hemostatic material and a preparation technology thereof. The hemostatic material comprises the following components: chitosan, crosslinked polyacrylic acid, starch acrylic acid graft copolymer, plant polysaccharide, cervus and cucumis polypeptide, sephadex gel, aluminum phosphate, coconut shell fiber, bamboo flour, beta-carotene, vitamin E acetate, povidone-iodine, trimethylolpropane triglycidyl ether, propylene oxide, granatenine, humic acid, saponins of colubrina asiatica, benzyl acetate, and azone. The provided medical hemostatic material has a good hemostatic effect, the hemostatic speed is quick, at the same time, the absorption rate is high, and the absorption amount is large, so the hemostatic material is very suitable for large and deep wounds and wounds with a large amount of bleeding, and at the same time, the hemostatic material promotes the healing of the wounds.

The invention provides antibacterial medical hemostasis absorbent cotton gauze, which consists of medicine dressing and a tissue material carrying the medicine dressing, wherein the medicine dressingis prepared from traditional Chinese medicine and western medicine; the tissue material carrying the medicine dressing is blended by scleroprotein fiber and cotton fiber. The hemostasis and the antibacterial effects are integrated; the obvious effects are achieved on abnormal bleeding in operations of lung, liver, pancreas, adrenal gland and the like, the bleeding except for obstetrics departmentand postpartum hemorrhage, urinary tract bleeding and the like; in addition, the antibacterial medical hemostasis absorbent cotton gauze can be used under the conditions of great and deep wound and great bleeding quantity; the hemostasis is fast; the wound surface wound recovery is facilitated; meanwhile, the antibacterial spectrum is wide; the sterilization power is strong; the action is fast; the effectiveness can also be achieved on pseudomonas aeruginosa, klebsiella, escherichia coli, enterobacter, staphylococcus, mycoplasma and chlamydia; in addition, good effects are achieved on trimethoprim drug resistant bacteria, penicillin drug resistant staphylococcus aureus andtylosin or tiamulin drug resistant mycoplasma.

The invention discloses a method for preparing a medical multilayer placental tissue implant. The method for preparing the medical multilayer placental tissue implant comprises the following steps of obtaining a qualified placental tissue material, separating amnion and chorionic tissue from the placental tissue material, treating the amnion and the chorionic tissue, removing blood, cells and DNA, disinfecting decellularized tissue, conducting lamination drying, cutting, and completing preparation. The medical multilayer placental tissue implant has a better adhesion effect on deep wounds, and is strong in toughness and not easy to tear.

A First Responder device for treating blood flow from a deep wound or a bodily cavity comprises an inflatable balloon, a first chamber accommodating a liquid arranged for inflating the balloon, a second chamber accommodating a cooling agent capable of dissolving in the liquid when coming in contact therewith, thereby lowering the temperature, a rupturable seal between the first and second chambers, and a structure for forcing the liquid out of the first chamber into the inflatable balloon, and for rupturing the rupturable seal.

The invention relates to an intraoral skin anastomat which comprises a sheath shell, a pushing block, clamping pincers and an anastomosis nail. The sheath shell is a hollow cuboid strip, the upper endof the sheath shell is open, a cylindrical shaft is arranged at the end opening, and a spring catch is arranged on the inner center line. The pushing block is a cuboid strip, an isosceles triangle groove is formed in the lower end of the pushing block, a rectangular through hole-spring hole is formed in the middle section of the pushing block, and a spring is arranged in the spring hole; the pushing block is arranged in the sheath shell, and the spring catch is arranged in the spring hole. The clamping pincers achieve the opening and closing functions of the pincers with a sheath shell cylindrical shaft as the axis, pincer mouths are two sections of arcs, a groove with the arc section is formed in the inner side center line, a spring piece is arranged between pincer arms, the pincer armsare arranged in the isosceles triangle groove, and the tail ends of the pincer arms make contact with the waist line of the isosceles triangle groove. The two ends of the anastomosis nail are providedwith metal wires with the same curvature as the clamping forceps, and the outer diameter is the same as the inner diameter of the clamping forceps groove. The skin anastomat is suitable for anastomosis of wounds in the oral cavity and also suitable for anastomosis of narrow and deep wounds.

The invention discloses injectable hemostatic cryogel for promoting tissue regeneration and a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically dispersing polydopamine, chitosan and collagen in deionized water, adding glacial acetic acid, and stirring until dissolving; and dissolving oxidized dextran in deionized water, adding an oxidized dextran solution into a mixed solution under vigorous stirring, transferring to a refrigerator for a reaction, and melting at room temperature to obtain the injectable hemostatic cryogel for promoting tissue regeneration. The aperture of the cryogel is 50-200 [mu] m, and the cryogel is provided with interconnected macroporous structures and stable mechanical strength, can be conveyed to a narrow and deep wound through an injector after being compressed and fixed, quickly recovers to block the wound and form a physical barrier after sucking blood, and activates a blood coagulation process through concentrated blood to achieve a hemostasis effect. The cryogel prepared by the invention has rapid shape recovery capability, injectability, good hemostatic capability and the like.

The invention discloses a preparation method of an amnion-spongy chitosan composite double-layer wound dressing, and belongs to the technical field of medical dressings. The amnion-chitosan compositedouble-layer wound dressing is prepared by combining amnion dressing and spongy chitosan with excellent antibacterial and swelling properties by using a crosslinking method. The dressing has a wound healing rate of 87.67% on a 8th-day mice, and the wound tissue skin thickness of the mice reaches 693.9233 microns. In addition, the dressing increases the enrichment concentration of hemoglobin from 72.8 g/L of an amniotic membrane group to 685.39 g/L, increases the swelling coefficient to 800% from 300% of the amniotic membrane group, increases the tensile stress and nominal strain of the dressing to 1.14-2.29 MPa and 6.34-6.97%, achieves the deep wound filling effect, rapidly absorbs wound exudate at the same time, prevents wound infection, keeps the wet environment of the wound, and promotes wound healing.

The invention relates to an ointment for treatment of scalds. The ointment comprises, by weight, 2-5 parts of borneol, 4-7 parts of boric acid, 250-350 parts of zinc oxide and 450-550 parts of vaseline. The ointment has the advantages that various components achieve a synergistic effect; boric acid and sulfonamide crystals cooperatively achieve the effect of inhibiting the growth of granulation tissue, so that scar formation and growth are weakened; vaseline which is oily is used for moisturizing the skin so that the problems of scar formation and pigmentation can be effectively reduced, and the skin can gradually recover to the normal color of healthy skin. For second-level burns and scalds and second-level deep wounds, treatment can be achieved without scars. For third-level burns, recovery can be achieved without skin grafting surgery, and scar formation is minimized. The ointment can quickly relieve pain in a few minutes and has a short treatment period and a quick effect without scars.