摘要:
Plasma-enriched hydroxyapatite-based fillers and methods of filling bone gaps in oral surgery, orthopedic procedures, and cosmetic surgery are disclosed. The fillers contain a substance comprising an anticoagulant antidote, a substance comprising hydroxyapatite, and blood or plasma. The blood may be either autologous or allogeneic. The fillers have a dough-like consistency and can be manipulated easily by a surgeon.
摘要:
The present invention relates to a process for producing a low endotoxin alkali chitosan, chitin, chitosan derivative or chitin derivative, and also to a process for producing low endotoxin neutral chitosan, chitosan salt and chitosan derivatives, and to the products of such processes. The process comprises contacting chitosan, chitin, chitosan derivative or chitin derivative with an alkali solution to form a mixture; leaving the mixture for a period of less than 1 hour and optionally drying the mixture. The low endotoxin alkali chitosan may be used in the manufacture of other useful chitosan based products.
摘要:
The invention provides: - A hydrophilic dehydrated partially purified bone replacement material of natural origin, wherein substantially all non-collagenous organic material is removed while inorganic, porous osseous structure and collagenous structure of natural bone are substantially preserved, characterized in that the bone replacement material contains 0.05 to 1.5 w/w % of at least one of a saccharide or a sugar alcohol, and 0.7 to 5.6 w/w % of a phosphate group selected from the group consisting of phosphate HPO4 2- and H 2 PO 4 - , this phosphate group being part of a physiologically acceptable salt and - a process for preparing a hydrophilic dehydrated partially purified bone replacement material.
摘要:
A method for reversing gelation of hydrophobically modified biopolymer attached to vesicle or cell membranes. The gelation of hydrophobically modified biopolymer attached to vesicles or cell membranes is reversed by application of a supramolecule, such as cyclodextrin, to the gelled composition. The supramolecule disrupts the interactions between the hydrophobically modified biopolymer and the vesicle or cell membrane, without affecting the structure of the membrane or the hydrophobically modified polymer to which the hydrophobic substituents are attached. A kit for treating wounds that includes a hydrophobically modified biopolymer and a supramolecule. The hydrophobically modified biopolymer is used to stop bleeding and the supramolecule is used to remove the hydrophobically modified biopolymer.
摘要:
The present invention provides a hemostatic porous composite sponge comprising i) a matrix of a biomaterial and ii) one hydrophilic polymeric component comprising reactive groups wherein i) and ii) are associated with each other so that the reactivity of the polymeric component is retained, wherein associated means that - said polymeric component is coated onto a surface of said matrix of a biomaterial, or - said matrix is impregnated with said polymeric material, or - both.