摘要:
A component for satisfactorily plugging a bone tunnel formed in surgery such as ACL reconstruction by regenerating bone in a space portion of the bone tunnel (e.g., a bone tunnel for an arthroscope), is provided in order to solve the problems in the conventional technologies. The plug component is made of a calcium phosphate-based material, comprises a porous part having a porosity of 50 to 85%, and has a cylindrical shape such that one of its bottom surfaces forms an angle of 30 to 60 degrees to its central axis.
摘要:
The present invention relates to a medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers as prepared by the paper making process, a preparation method thereof, and an adhesion prevention barrier using the same. The present invention provides a single phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, to induce capillary action of micropores formed between the fibers and thereby control the gelation time, and provides a composite nonwoven fabric formed by laminating a nonwoven fabric layer comprising a different kind of biodegradable polymer material not susceptible to gelation on the single-phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, thereby improving dimensional stability and convenience of surgical procedure. The present invention further provides a dyed medical nonwoven fabric to improve visibility, allowing easiness of recognizing the placement or location of the medical nonwoven fabric. Further, the single-phase nonwoven fabric or the composite nonwoven fabric, which makes it possible to efficiently control the gelation time by way of capillary action of the micropores formed between the fiber in the nonwoven fabric, can also be used as an adhesion prevention barrier with improved convenience of surgical procedure and post-surgical adhesion, in contrast to the conventional knit or film type adhesion prevention barrier.
摘要:
A reduced pressure delivery system for applying a reduced pressure to a tissue site includes a manifold delivery tube having a passageway and a distal end, the distal end configured to be percutaneously inserted and placed adjacent the tissue site. A flowable material is provided and is percutaneously deliverable through the manifold delivery tube to the tissue site. The flowable material is capable of filling a void adjacent the tissue site to create a manifold having a plurality of flow channels in fluid communication with the tissue site. A reduced pressure delivery tube is provided that is capable of fluid communication with the flow channels of the manifold.
摘要:
Provided is a stent graft that has superior prevention of endoleakage due to being resistant to creasing, and has superior prevention of graft migration as a result of promoting cell infiltration into gaps among microfibers in a dispersed state and forming an integrated structure with the cells in the landing zone of the stent. The stent graft according to the present invention is a stent graft comprising a stent graft fabric that has microfiber bundles consisting essentially of microfilaments having a filament linear density of 0.5 dtex or less, and said microfiber bundles having a total linear density of 10 to 60 dtex/120 to 3000 filaments, for the warp and/or weft, and in which the porosity of the microfiber bundles is 30% to 95%, wherein said stent graft has said stent graft fabric being located in at least 1 cm range from the central end.
摘要:
In accordance with certain embodiments of the present disclosure, a process for forming a multilayered electrospun composite is provided. The process includes forming a dispersion of polymeric particles, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. Nanofibers from the dispersion are electrospun onto a first ePTFE layer. A second ePTFE layer is applied onto the nanofibers to form a composite structure. The composite structure is heated.
摘要:
This invention is directed to graft materials for implanting, transplanting, replacing, or repairing a part of a patient and to methods of making the graft materials. The present invention is also directed to stent grafts and endoluminal prostheses formed of the graft materials. More specifically, the present invention is a graft material which includes porous polymeric sheet, extracellular matrix material (ECM) disposed on at least a portion of the porous polymeric sheet and at least one polymer layer disposed on at least a portion of the ECM. The ECM may be in a gel form. The polymeric sheet and the polymer layer may be made from foam material and may comprise a polyurethane urea and a surface modifying agent such as siloxane.
摘要:
An implant for deployment in select locations or select tissue for regeneration of tissue is disclosed. The implant includes collagen and or other bio-resorbable materials, where the implant may also be used for therapy delivery. Additionally, the implant may include, or have blended in, an additive, such as an osteoinductive factor, for example biocompatible ceramics and glass.
摘要:
Provided are porogen compositions and methods of using such porogen compositions in the manufacture of porous materials, for example, porous silicone elastomers. The porogens generally include comprising a core material and shell material different from the core material. The porogens can be used to form a scaffold for making a resulting porous elastomer when the scaffold is removed.
摘要:
A stent includes a plurality of cylindrical elements joined along a common longitudinal axis to form a tube. The cylindrical elements include struts joined by crowns. Hollow, drug-eluting elements are disposed between adjacent cylindrical elements and connect adjacent cylindrical elements to each other. A therapeutic substance fills the lumen of the drug-eluting elements, and openings in the walls of the drug-eluting elements allow elution of therapeutic substance from the lumen for treatment of a vessel.
摘要:
Implants, such as interbody spacers, fusion devices and bone grafts, are provided having improved mechanical properties and/or degradation profiles. Such implants include a three-dimensional scaffold formed from particles, such as microspheres, which may in some embodiments be resorbable or biodegradable and which may have at least two different degradation rates. In some embodiments, the scaffold may be elastomeric. The three-dimensional scaffold may be for example, porous or semi-porous. Also provided are kits including such implants, and methods of producing and using the same.