103results about How to "Reduce the incidence of infection" patented technology

The invention provides a degradable expandable local urine tract intracavity support system to effectively support a local lesion urine tract after urine tract stricture obstruction surgery and to prevent stricture obstruction replase due to postoperation scar hyperplasia and contracture. The support system is made of degradable material and can be degraded after scar stability and before adhesive lithogenesis formation and can be discharged with urine outside the body; and the support system comprises but is not confined to a naked rack, a drug eluting stent or a drug coating layer rack, a film covering rack, etc. The support is compressed into an exotheca with small caliber and then released after reaching a target urine tract position, then expanded and enlarged to support the lesion urine tract; the internal diameter and length of the support can be adjusted according to clinic demands; and compared with traditional double J type ureter racks and catheters, interference and damage to normal urine tract except for the stricture part can be avoided, and limitation of rack lumen inner diameter by the urine tract physiological stricture part can be avoided.

The invention relates to an anti-infection venous catheter and a preparation method thereof. The venous catheter comprises a conduit main body tube, a tip end and a tube seat, and preferably also comprises a connecting seat and a plurality of epitaxial tubes, wherein the parts retained in a human body are the conduit main body tube and the tip end; and an anti-infection medicament rifampicin, an anti-infection medicament minocycline or combination of the two are uniformly loaded on the conduit main body tube. The preparation method of the venous catheter comprises the following steps of: dissolving the anti-infection medicament or the medicament combination to form soak solution; soaking the conduit into the soak solution to fully soak medicaments into the conduit; and drying to remove solvent to prepare the anti-infection venous catheter. During use, the medicaments are slowly released to fulfill the anti-infection aim of the conduit and avoid infection of the conduit during retention in the human body in surgery.

The invention discloses a rotator cuff bioremediation mesh patch as well as use and a preparation method thereof. The rotator cuff bioremediation mesh patch is prepared by taking animal tissues as a raw material, cells, DNA and other immune components are removed, the raw material is twisted into threads after being cut into thin strips, and threads are woven into the patch. A heterogeneous decellularized material obtains greater strength by being twisted into the threads, thus being less likely to break; furthermore, after weaving, due to the interlacing between the threads, the external force of stretching tear does not act on one point but on multiple interlacing points; therefore, the patch has good mechanical properties, and overcomes the disadvantages of poor mechanical strength of the rotator cuff bioremediation mesh patch prepared from the heterogeneous decellularized material and the need to introduce a cross-linking agent or a synthetic material; a mesh structure is obtainedby using a weaving process, and the mesh aperture can be adjusted by adjusting weaving parameters, so that the actual application demands can be met.

The invention provides a multi-layer foam dressing for negative pressure sealing drainage and its manufacturing method. The multi-layer foam dressing for negative pressure sealing drainage includes a negative pressure conduction layer, which is arranged at the lower part of the negative pressure conduction layer for contact with the wound surface or The drainage protection layer in contact with the wound cavity, the negative pressure conduction layer and the drainage protection layer are both porous foam material layers; the negative pressure conduction layer is a hydrophobic porous foam material layer, and the drainage protection layer is a hydrophilic porous foam Material layer, two layers of materials are fixedly connected and the pores are infiltrated and communicated with each other. There are two longitudinal fractures on the multi-layer foam dressing, the longitudinal fractures are located at the position where the negative pressure drainage tube is installed, and one end of the negative pressure drainage tube is installed through the position where the hole of the negative pressure drainage tube is installed to extend to the multi-layer The middle of the foam dressing. The thickness a of the negative pressure conducting layer is 0.5-10 cm, and the pore diameter is 1-2.5 mm. The thickness b of the drainage protection layer is 0.1-3.5 cm, and the pore diameter is 0.2-1 mm. Simultaneously, the invention also provides two methods of making the above-mentioned foam dressing, bonding and compounding. The invention adopts a multi-layer structure, which can effectively improve its negative pressure conduction performance while ensuring the safety of the material, and is not easy to be blocked during use, has stable permeability and excellent therapeutic effect.

A method of improving the growth of plants such as corn, soybean, wheat, or rice is provided by reducing the incidence of one or more fungal infections. The method comprises the step of applying a foliar treatment composition at least once to established plants, wherein the treatment composition comprises effective amounts of active ingredients prothioconazole, trifloxystrobin, and azoxystrobin.

The invention discloses a medical biological yarn, a medical biological repair mesh and a preparation method thereof. The medical biological yarn can be woven into the repair mesh by taking tissues ofan animal as a raw material, removing immune components such as cells and DNA and slicing the raw material into strips and twisting the strips to the yarn. A special cell-removal material is twistedto yarns to obtain greater strength, so that the yarns are hard to break. The yarns are interwoven after being woven, a stretching and tearing external force is not applied to one point but to multiple interwoven points, so that the yarn has good mechanical property. The defect that the mechanical strength of the biological repair mesh is poor and a crosslinking agent or a synthetic material is needed is overcome. Moreover, the structure of the mesh is prepared from a weaving process. The size of the pore diameter of the mesh can be adjusted easily by means of weaving parameters to meet the demand of actual applications. In addition, the medical biological yarn keeps original components such as three-dimensional structures, collagenous fibers, non-collagenous fibers and growth factors in an extracellular matrix and promotes functional reconstruction and postoperation reunion of tissues.

The invention relates to silver-containing pig acellular dermis and a method for preparing the same. The method for preparing the silver-containing pig acellular dermis comprises steps of pretreating pigskin; splitting the pigskin; sterilizing a skin sheet; performing cell removing treatment on the skin sheet; and performing active silver solution treatment on the skin sheet. The invention relates to silver-containing pig acellular dermis prepared by the method for preparing the silver-containing pig acellular dermis. Because of the treatment of the active silver ion solution, the silver-containing pig acellular dermis of the invention has active bacteria inhibiting effect , and reduces infection occurrence rate after transplantation; meanwhile, the silver-containing pig acellular dermis of the invention not only removes the prior immunogenicity cell components in the matrix, but also maintains a basic structure of skin tissue and an integral collagen fiber support, contains silver ions with bacteria inhibiting effect at the same time, and provides a fine dermis substituent with active bacteria inhibiting function in clinic application.