Abstract: The invention relates to a plastic blasting agent A and the use of a plastic blasting agent A, comprising at least one particle PA1 made from at least one polymer KA1 and at least one foreign particle FA1 for the surface treatment of a component that was created using additive manufacturing.

Abstract: The invention relates to an apparatus for the culture of cells, comprising a mixing apparatus and a reaction space which is bounded by a reactor wall, wherein the reactor wall has at least one connection for the introduction of gas and/or liquid and the reaction space has an internal volume, wherein the reaction space is configured so that the internal volume can be increased by at least 500%, based on a minimum internal initial volume, or that a horizontal cross-sectional area of the reaction space increases from the bottom upward. The invention further relates to a process for the culture of cells.

Abstract: A novel composite arterial-venous (AV) shunt system is disclosed that resolves many known and persistent clinical problems associated with traditional synthetic AV shunts. The system comprises fluid-dynamically optimized non-porous anastomotic connectors with a non-porous self-sealing tubular shunt, and resolves clinical problems of leakage, infection, clotting due to turbulence, and cellular in-growth that can lead to stenosis.

Abstract: The invention described herein consists of an expanded PTFE (ePTFE) material that contains a novel fibril and node structure that exhibits a pore size distribution of two or more distinct pore sizes. The pore size distribution of small pores inter-spaced with larger pores to create a mosaic pore structure is advantageous as a blood-contacting surface and renders the invention a very useful and advantageous vascular graft.

Abstract: The invention described herein consists of an expanded PTFE (ePTFE) material that contains a novel fibril and node structure that exhibits a pore size distribution of two or more distinct pore sizes. The pore size distribution of small pores inter-spaced with larger pores to create a mosaic pore structure is advantageous as a blood-contacting surface and renders the invention a very useful and advantageous vascular graft.

Abstract: A membrane module is provided which serves to remove gaseous substances from a gas stream and which consists of a plurality of plane membrane pockets consisting of a gas-permeable, liquidproof material. The pockets are arranged in parallel to each other and in parallel to the flow direction of the gas stream. The membrane pockets contain a liquid reaction mixture or a suspension of microorganisms which react with certain constituents of the gas stream which passes the pockets. An essential part of the pockets is a circumferential frame which is connected with both sides of the membrane material. The frame is provided with supply bore holes and drainage bore holes which are connected with the interior of the pocket. When the frames are stacked on each other, these bore holes are positioned on top of each other thus forming supply and drainage channels through which the reaction mixture or suspension in the rockets can be renewed and discharged.