95 results about "Bleeding wounds" patented technology

An apparatus for promoting the clotting of blood and controlling bleeding comprises a receptacle for retaining molecular sieve material in particulate form therein. A pad for controlling bleeding comprises a mesh structure and a rigid or semi-rigid support attached to the mesh structure to facilitate the application of pressure to the pad and the wound. A bandage applicable to a bleeding wound comprises a mesh structure and a flexible substrate attached to the mesh structure, the substrate being a cloth or plastic member that may be adhesively attached to cover a wound. In any embodiment, at least a portion of the receptacle or mesh structure is defined by a mesh having openings therein, and at least a portion of the particulate molecular sieve material is in direct contact with blood.

A hemostatic agent delivery system includes a hemostatic agent which is inert and non-reactive yet is capable of forming a stable clot when applied to an actively bleeding wound. The system also includes a delivery assembly to structure to facilitate delivery of the hemostatic agent proximate the hemorrhage site. More specifically, the delivery assembly is structured to releasably contain the hemostatic agent via a release member which is disposed in cooperative relation with a support member which contains the amount of the hemostatic agent. The release member is structured of a soluble material such that it will at least partially dissolve and release the hemostatic agent upon disposition proximate the hemorrhage site. The delivery assembly further comprises a handle member structured to facilitate delivery of the hemostatic agent to the hemorrhage site.

A hemostatic agent composition that includes a clay hemostatic agent which is inert and non-reactive relative to blood clotting proteins and platelets, yet is capable of accelerating the formation of a stable clot when applied to an actively bleeding wound.

A radiographic composition for promoting the formation of clots in blood includes a zeolite and iodine. A device for promoting the clotting of blood at an internal wound site includes a catheter; a delivery instrument insertable through the catheter; a radioopaque blood clotting agent that deliverable through the delivery instrument; and a positive pressure apparatus that can dispense the blood clotting agent to the wound site through the delivery instrument. A system for radiographically imaging an internally bleeding wound includes means for delivering a radioopaque blood clotting agent and means for radiographically imaging the radioopaque blood clotting agent. A method of imaging an internally bleeding wound includes the steps of inserting a catheter into a patient; advancing the catheter to a point adjacent the bleeding wound; depositing a radioopaque zeolite at the bleeding wound; and imaging the radioopaque zeolite to monitor blood-clotting caused by the zeolite.

The invention discloses an alkyl modified chitosan/mesoporous silicon dioxide composite quick hemostatic powder and a preparation method thereof. The method comprises the following steps: 1) preparation of alkyl modified chitosan; 2) preparation of mesoporous silicon dioxide particles; and 3) preparation of composite quick hemostatic powder: dissolving the alkyl modified chitosan in an acetic acid water solution, adding polyethyleneglycol 20000 to be dissolved, adding the mesoporous silicon dioxide particles prepared in the step 2), stirring at room temperature, freeze-drying the precipitate, suspending the precipitate in dimethylsulfoxide, regulating the pH value, centrifuging, washing with deionized water, and freeze-drying to obtain the alkyl modified chitosan/mesoporous silicon dioxide composite quick hemostatic powder. The hemostatic powder disclosed by the invention can quickly stop bleeding, and is suitable for pre-hospital emergency treatment of severe bleeding wounded persons. The material has the advantages of high hemostatic speed, excellent hemostatic effect, favorable biocompatibility and histocompatibility, and no side effect.

A vacuum sealing drainage device for a bleeding wound tissue, includes a multi-hole foam cushion (1) contacted with the bleeding wound tissue, a drainage pipe (2) with a side hole, a sealing film (3), a connector (4), a duct (17), a drainage container (5), and a vacuum source (6). The device further includes a glue film (7) and an leading-out pipe (8). The glue film (7) is disposed above the multi-hole foam cushion (1). An opening of the side hole of the drainage pipe (2) is contacted with the multi-hole foam cushion (1). The leading-out pipe (8) is connected to the drainage pipe (2), and is disposed above the glue film (7). The sealing film (3) is sealed on the glue film (7). The leading-out pipe (8) is received in the drainage container (5) via the duct (17), and the drainage container (5) is connected to the vacuum source (6) via the duct (17). The device increases time of maintaining elasticity and a humid environment for the multi-hole foam cushion, which is helpful for wound healing. The sealing and drainage thereof are convenient and reliable.

The invention discloses a dual negative pressure adjustable wound negative pressure therapeutic instrument based on a microprocessor core, comprising an internal negative pressure source, an internal negative pressure control unit, an external negative pressure interface, a regulating valve, an external negative pressure control unit, a wound Drainage device, negative pressure detection unit, flow rate and flow rate detection unit and alarm unit; internal negative pressure control unit and external negative pressure control unit respectively control internal negative pressure source and external negative pressure source to generate negative pressure at the wound, wound drainage device The generated lactic acid metabolites are drained, the negative pressure detection unit detects the pressure at the wound, the flow and velocity detection unit detects the drainage volume and drainage speed at the wound, and the detected signal is fed back to the internal negative pressure control unit or external negative pressure control unit , the control unit controls the negative pressure source according to the feedback signal; when the wound causes massive bleeding, the alarm unit sends out an alarm signal. The present invention can use a negative pressure pump or a hospital negative pressure system as a negative pressure source, which can be flexibly selected in practical applications.

The invention is within the field of medical biological macromolecules and in particular relates to an alginate composite antibiotic dressing and the preparation method. The present invention uses fibroin composite membrane as antiseptic, humectant and antiadhesive. Loading it on the alginate fiber, the finally obtained alginate composite antibiotic dressing clinically functions as protecting the wound surface, inhibiting the bacteria, stopping the bleeding, preventing from conglutination and speeding up the mending of the wounds. The preparation method of the antibiotic dressing is simple. The easy process makes it possible for large-scaled production. The so-formed alginate composite antibiotic dressing improves the force performance of alginate under the hygrometric state, overcomes the conglutination of alginate on bleeding wounds, at the same time it qualifies alginate with certain antimicrobal property. This is suitable for nursing typical wound surface, speeding up the mending process, and alleviates the pain for wound patients.

A bandage material with active carbon fibers is disclosed, in which the bandage material is comprised of a load-bearing layer made of an unwoven viscose/polypropylene textile material, and an active layer made of 200 g/m² pure carbon fiber. When combined, the load-bearing layer and the active layer form a single compact union. A bandage material suitable for use on a bleeding wound or other, smaller surface wounds, etc., is comprised of a load-bearing layer, which can have any flat shape and in a preferred embodiment houses bandage material with active carbon fibers, oriented with an active carbon fiber layer disposed on top, and with the edges of the load-bearing layer fitted with an adhesive layer to form a peel-away protective cover.

The invention relates to a bleeding stopping starch and an application thereof. The bleeding stopping starch is prepared through redenaturation of denaturated starch in the prior art, and microwave processing. The bleeding stopping starch has the advantages of excellent water absorption effect, safety and stability, has biocompatibility, and can be directly applied to bleeding wounds.

The invention discloses nano composite porous hydrogel as well as preparation and application thereof, and relates to the technical field of biomedical materials. The preparation method of the hydrogel comprises the following steps of: firstly synthesizing dopamine modified gelatin, taking methacrylic acid modified gelatin as an emulsion stabilizer and water as a continuous phase, stirring and dissolving a functional polymer dopamine modified gelatin, silicate nano-clay and a photoinitiator in the continuous phase at a high speed to obtain stable air-in-water composite hydrogel emulsion; and preparing the novel nano composite porous hydrogel with a three-dimensional network porous structure, good mechanical properties, biocompatibility and coagulation performance through ultraviolet-initiated polymerization. Multiple dynamic physical/chemical crosslinking among the components in the hydrogel endows the hydrogel with good mechanical properties and self-healing properties. The hydrogel has good adhesion performance and blood coagulation performance to tissues, can be used for rapid sealing and blood coagulation hemostasis of bleeding wounds so as to promote tissue repair, and is expected to be applied to the fields of biological medicines, tissue engineering and the like.

The invention discloses a half-path charge complementary type chiral self-assembled short-peptide nanometer biomedical material and application. The general formula of the amino acid sequence of a chiral self-assembled short peptide provided in the invention is shown as follows: Ac-Pro-X-Phe-Y-Phe-Asn-Phe-Gln-Pro-NH2, wherein X and Y are polar charged amino acids, X is an negatively charged amino acid and Y is an positively charged amino acid, the amino acids of the whole peptide chain are all D-amino acid, and the number of amino acid residues is set as 9. The half-path charge complementary type chiral self-assembled short peptide has a secondary structure with relatively strong stability and is hardly influenced by external environmental factors, the self-assembly morphology of the chiral short peptide can be regulated by adding NaCl or changing the content of NaCl, and nanometer fiber hydrogel, which has rapid bleeding-stopping effect on bleeding wound, can be formed through self assembly. The material is simple and practicable in preparation technology and relatively low in cost, and the application of the material helps to enrich the kinds of nanometer biomedical materials.

The invention relates to a bleeding stopping sponge and an application thereof. The bleeding stopping sponge is prepared through redenaturation of denaturated starch in the prior art, and microwave processing. The bleeding stopping sponge has the advantages of excellent water absorption effect, safety and stability, is biocompatible, and can be directly applied to bleeding wounds.

The invention discloses a garden plant bleeding healing agent. The garden plant bleeding healing agent mainly comprises the following components: 100-500mg/L of copper acetate wettable powder, 100-400mg/L of plant ash, 10-90mg/L of naphthylacetic acid, 20-100mg/L of cytokinin and 40-180g/L of tung oil. The invention further discloses a preparation method of the garden plant bleeding healing agent.The garden plant bleeding healing agent provided by the invention uses the copper acetate wettable powder, the tung oil, the plant ash and a plant growth regulator, and under the action of compounding the various components according to a certain ratio, the garden plant bleeding healing agent can effectively reduce plant deaths caused by plant bleeding, so that the landscape greening cost is effectively reduced; the preparation method is simple and feasible; the garden plant bleeding healing agent can promote healing of plant bleeding wounds, and the curative rate reaches 80%; the garden plant bleeding healing agent can effectively reduce the plant deaths caused by plant bleeding, so that the landscape greening cost is effectively reduced; the garden plant bleeding healing agent can effectively solve the garden plant bleeding problem caused by plant damage such as pruning and modeling, so that the high-quality ornament of a garden landscape can be maintained; the garden plant bleedinghealing agent is applicable to, but is not limited to, garden plant pruning wounds, and is equally applicable to other plant bumps, injuries, grafting wounds and the like.