Abstract:
This invention provides devices and methods for mixing and extruding compositions which are medically and non-medically useful. The devices are particularly useful for mixing substances which are relatively inert when alone but become reactive when mixed. A common feature of all of the devices is that they allow the user to mix and ultimately extrude a composition from a single device which includes a single container or multiple interconnected containers.
Abstract:
The invention discloses a method for the production of a polymerized product comprising the following steps: - providing a polymerization device to which a polymerization mixture and a separation medium can be applied and wherein flow of said mixture and medium can be conducted in appropriate ducts for said mixture and medium, - transporting said polymerization mixture in a duct of said polymerization device thereby allowing the polymerization reaction, - transporting said mixture in a duct of said polymerization device in a continuous flow, - interrupting said continuous flow of said mixture with said separation medium so as to obtain consecutive volumes of said mixture and volumes of said separation medium, - further transporting said consecutive volumes of said mixture and volumes of said separation medium in a duct of said polymerization device wherein said mixture further polymerizes to obtain a discontinuous polymerized product, and removing said discontinuous polymerized product from said polymerization device.
Abstract:
A biopolymer membrane in its substantially dry form having a thickness less than about 75 microns, a solvent content less than about 5 % by weight of the membrane, a radius of curvature of less than about 5 centimeters, a density greater 5 than about 1 g/cm , and a maximum pore size of about 20 microns. The biopolymer can be fibrin. The membrane is useful for making artificial skin.
Abstract translation:其基本干燥形式的生物聚合物膜的厚度小于约75微米,溶剂含量小于膜重量的约5%,曲率半径小于约5厘米,密度大于约1g / cm 3,最大孔径约20微米。 生物聚合物可以是纤维蛋白。 该膜可用于制造人造皮肤。
Abstract:
The present invention provides a porous structure of fibrin or fibrinogen material. The structure in its substantially dry form, having a compression strain of less than 8 %, and a creep modulus higher than 1.5 x 10 Pa. The compression strain and creep modulus being measured for a sample having a diameter of 5 mm on which a compression of 2500 milli Newtons is exerted with a compression ramp of 500 milli Newtons per minute, after a compression release step following an initial compression of 2500 milli Newtons with a compression ramp of 500 milli Newtons per minute. After hydration, the structure has a porosity wherein at least 50 % by volume of the total porosity is formed by channels with an open cross section of more than 500 mu m .
Abstract:
An element provided with a layer based on fibrin- or fibrinogen-containing material, said element comprising (a) a hydrophobic or substantially hydrophobic support, which has a porous part with a thickness of 0.1 to 5 mm, and whose pores, extending across its thickness have a node spacing of 5 to 100 mu m, one face of said porous part being treated with a compound based on fibrin and/or a fibrinogen-containing material, and (b) a fibrin-based layer covering said treated surface of the support, characterized in that said fibrin-based layer is substantially uniform and homogeneous on said treated surface, and that the fibrin layer and at least the face of the support in contact with the fibrin layer are substantially free of fibrinogen.
Abstract:
Elément présentant une couche à base de fibrine ou de matière contenant du fibrinogène, ledit élément comportant (a) un support hydrophobe ou sensiblement hydrophobe présentant une partie poreuse dont l'épaisseur est comprise entr 0,1 et 5 mm et dont les pores s'étendant au travers de son épaisseur ont un espace internodal compris entre 5 et 100 µm, une face de ladite partie poreuse dudit support étant traitée au moyen d'une composition à base de fibrine et/ou de matière contenant du fibrinogène, et (b) une couche à base de fibrine recouvrant ladite face traitée du support, caractérisé en ce que ladite couche à base de fibrine est sensiblement uniforme et homogène sur ladite face traitée, et en ce que la couche de fibrine et au moins la face du support en contact avec la couche de fibrine sont sensiblement exempts de fibrinogène.
Abstract:
This invention provides a medical device for delivering volumetric quantities of a first and a second biochemically reactive fluid comprising a first container having an opening, the first container being adapted to contain the first biochemically reactive fluid; a second container having a second fluid opening adjacent the first fluid opening, the second container being adapted to contain the second biochemically reactive fluid; a spray unit for separately atomizing the first and second biochemically reactive fluids into an aerosol with at least one energy source of a liquid energy, a mechanical energy, a vibration energy, and an electric energy; a fluid pressurizer for pressurizing the first and the second biochemically reactive fluids for delivery under pressure through the spray unit onto a surface; and wherein the first and second biochemically reactive fluids first mix on the surface.
Abstract:
The self-supporting sheet-like material of cross-linked fibrin has a regular pore size. It is used as a bio-mechanical barrier for the treatment of internal traumatic lesions, in particular for the prevention of adhesion formation as post-operative complication. In the course of this it can be used either alone or in combination with a fibrin glue acting as a haemostatic agent. Since the material in terms of its composition and general structure is similar to endogenous products, it has, inter alia, an excellent biocompatibility, bio-degradability and bio-resorbability.