Abstract:
An extracorporeal blood treatment system includes means for withdrawing blood from a patient, and means for transporting the blood through a calcium trap. The calcium trap includes a substrate having an immobilized species, the species being adapted to reduce the calcium concentration in the blood to a concentration that prevents blood clotting in the extracorporeal blood treatment system, thereby producing calcium-depleted blood. The extracorporeal blood treatment system also includes means for treating the calcium-depleted blood downstream of the calcium trap by an extracorporeal blood treatment device, thereby producing treated calcium- depleted blood, means for infusing calcium into the treated calcium-depleted blood downstream of the extracorporeal blood treatment device to add calcium to the treated calcium-depleted blood, and means for returning treated blood back to the patient.
Abstract:
A method of making a micro-dialysis probe (6) by providing a first flow channel (4), a second flow channel (5) and a separating wall (3) arranged in such a manner that it separates the first flow channel (4) and the second flow channel (5). The method further comprises providing at least one opening (7) in an outer wall (2) of the first (4) or second (5) flow channel, and arranging a semi-permeable membrane tube (8) therein. Finally, the method comprises removing material from the separating wall (3), thereby providing a communication opening (9) providing fluid communication between the first flow channel (4) and the second flow channel (5). The method is very easy to perform, and it is suitable for mass production. The invention further relates to a micro-dialysis probe (6).
Abstract:
The invention is directed to controlling wastewater treatment system operations in response to a demand associated with the influent conditions. Fluctuations or variations in flow and/or concentration characteristics of the liquid to be treated can create the reduce the operating demand and the treatment system can be operated to a reduced or standby operating mode by adjusting the operation of one or more unit operations or subsystems in response to such variations. The wastewater system can also be operated to treat an anticipated wastewater stream based on the historical characteristics of the stream.
Abstract:
Die vorliegende Erfindung betrifft eine Hohlfaser aus einem semipermeablen Membranmaterial, wobei die Hohlfaser über ihre gesamte Länge genau eine Engstelle aufweist, in der der Innendurchmesser der Hohlfaser gegenüber dem oder den Abschnitten der Hohlfaser, die an die Engstelle angrenzen, verringert ist. Die vorliegende Erfindung betrifft ferner ein Hohlfaserbündel, einen Filter sowie ein Verfahren zur Herstellung einer Hohlfaser oder eines Hohlfaserbündels.
Abstract:
A gas separation apparatus comprising: - a first chamber; - a second chamber, separated from the first chamber by a porous partition; - a first inlet for conveying a mixture of components to the first chamber; - a first outlet for discharging the remainder of the mixture of components after at least part of the first component has been removed from the first chamber; - a second inlet for conveying a sweeping component into the second chamber; - a second outlet for discharging a mixture of sweeping component and diffused first component from the second chamber, and - a pressure equilibrating device connecting and mediating between the first and the second chamber; and a separation process using the separation apparatus.
Abstract:
The invention is directed to controlling wastewater treatment system operations in response to a demand associated with the influent conditions. Fluctuations or variations in flow and/or concentration characteristics of the liquid to be treated can create the reduce the operating demand and the treatment system can be operated to a reduced or standby operating mode by adjusting the operation of one or more unit operations or subsystems in response to such variations. The wastewater system can also be operated to treat an anticipated wastewater stream based on the historical characteristics of the stream.
Abstract:
A membrane-permeation test for evaluating pharmaceutical compositions is described. The method comprises the following steps: (1) providing a microporous membrane having a plurality of pores, the membrane having a feed side and a permeate side, wherein the feed side of the membrane is in fluid communication with the feed solution, and wherein the permeate side of the membrane is in fluid communication with a permeate solution; (2) administering a pharmaceutical composition to an aqueous solution to form a feed solution; and (3) measuring the concentration of drug in the permeate solution; wherein the feed side of the membrane is hydrophilic, and/or wherein the permeate solution comprises an organic fluid.
Abstract:
A burette (10, 110, 200) suitable for delivery of a reagent into a target solution (50) employs diffusion for delivering the reagent. The reagent is in the form of a solution, which is combined with a matrix material (22), such as a gel or porous ceramic. A membrane (32) covers a delivery outlet (20) to the burette. In one embodiment, the delivery outlet comprises a plurality of fine bores (36), each one filled with or covered by a membrane (38). Stirring of the burette or target solution is achieved with a stirring means (104, 106). A heating or cooling means (80) heats a tip (16) of the burette.
Abstract:
An implantable, or compact, extracorporeal, artificial kidney that generally comprises: at least one blood inlet conduit, at least one microfluidic filter, a support for said filter, at least one blood outlet conduit and at least one blood soluble outlet conduit, and methods for using the kidney.