Abstract: A catheter (or cannula) is small enough in diameter to be placed minimally invasively into the body of a patient but also can be expanded post-placement to provide a larger-diameter placed catheter that supports fluid flow at a rate higher than is possible through the pre-placement reduced-diameter catheter. The expandable catheter is constructed using one or more shape memory polymers and can include one or more stent-like sections and/or at least part of the cannula formed as folded lobes. Each of the stent-like sections is configured to enhance the flexibility of the section as compared to the other parts of the catheter and thus allow the section to accommodate tight bends and turns when inserted into the body of the patient. The folded lobes are axial folds that constitute at least one section of the cannula, and they unfold upon expansion of the catheter to create a large cross-sectional shape.

Abstract: The invention relates to a method for the calibration of a flow measurement in a flow system (1), wherein a fluid (2) is conveyed through a flow connection (3) of the flow system (1), and a flow rate of the fluid (2) is determined through the flow measurement from a working parameter of the flow system (1). In accordance with the invention the flow rate of the fluid (2) is determined at a pre-determined point in time with a calibration sensor (4) in a calibration measurement and the flow measurement is calibrated anew with the help of the calibration measurement. Furthermore, the invention relates to a flow system to carry out the method in accordance with the invention.

Abstract: An apparatus for the rotational coating of a surface of a substrate with a fluid, in particular the surface of a wafer with a polymer liquid, especially with a photoresist includes a rotary plate (2) for receiving the substrate (11), a drive device (3) for rotating the rotary plate (2), a dispensing nozzle (4) for the application of a predeterminable quantity of fluid onto the surface of the substrate (11) for the purpose of forming a layer (12) and also a pump (5) for conveying the fluid, the pump being connectable, on the one hand, to a source (20) for the fluid and, on the other hand, to the dispensing nozzle (4). A viscosimeter (6) is provided with which the actual viscosity of the fluid can be determined by physical measurement prior to the application of the fluid. Furthermore a corresponding method is proposed.

Abstract: The invention relates to an integrated centrifugal blood pump-oxygenator (1) comprising a housing (2) with a top (3) having a blood inlet (4), a blood outlet (5) and a gas inlet (6), and a bottom (7) having a rotational body (8) being rotatably arranged in a rotor-housing (9) of the bottom (7). The integrated centrifugal blood pump-oxygenator (1) further comprises an oxygenator membrane (10) provided in an interior (11) of the housing (2), wherein in the operation state oxygen (12) is transferred from the gas inlet (6) through the oxygenator membrane (10) to an gas outlet (13) and a blood (14) is brought in direct contact with the oxygenator membrane (10) by pumping the blood (14) by the rotational body (8) from the blood inlet (4) to the blood outlet (5). According to the invention, the rotational body (8) is magnetically journalled in a contact free manner with respect to the rotor-housing (9).

Abstract: A filter and pump unit is proposed for the filtering out of particles from a fluid, there being a filter housing (2) which bounds a filter space (3) and has an inlet (21) and also an outlet (22) for the fluid to be filtered as well as a filter element (4) provided in the filter space (3), the filter element demarcating an inlet region (31) from an outlet region (32) of the filter space (3), with the inlet region (31) communicating with the inlet (21) and the outlet region (32) communicating with the outlet (22), there also being an impeller (5) which, as part of a rotary pump, can pump the fluid from the inlet region (31) through the filter element (4) into the outlet region (32), characterized in that a flow connection (6) is provided between the outlet region (32) and the impeller (5) so that at least a part of the fluid can flow back from the outlet region (32) to the impeller (5). Furthermore, a method for the filtering out of the particles from a fluid is proposed.

Abstract: A filter apparatus is provided for the filtering of substances from a fluid having a filter housing (2) which bounds a filter space (6) and which has an inlet (3) and an outlet (4) for the fluid to be filtered and having a filter element (5) which is provided in the filter space (6) and which is designed and arranged so that the filtering fluid can only flow through the filter element (5) from the inlet (3) to the outlet (4) of the filter housing (2) in operation, wherein a heating device (10) is provided for the heating of the fluid which includes a microwave source (11) in order to act on the fluid by microwaves.

Abstract: A filter apparatus is provided for the filtering of substances from a fluid having a filter housing (2) which bounds a filter space (6) and which has an inlet (3) and an outlet (4) for the fluid to be filtered and having a filter element (5) which is provided in the filter space (6) and which is designed and arranged so that the filtering fluid can only flow through the filter element (5) from the inlet (3) to the outlet (4) of the filter housing (2) in operation, wherein a heating device (10) is provided for the heating of the fluid which includes a microwave source (11) in order to act on the fluid by microwaves.

Abstract: An electrical multiphase machine is proposed with a stator (3) including a winding (5;6) having at least two strands (51, 52, 53; 61, 62) for generating an electromagnetic field, each strand (51, 52, 53; 61, 62) belonging to a different electrical phase; furthermore with a setting device (4) which supplies each strand (51, 52, 53; 61, 62) with a phase current (Ia, Ib, Ic) or phase voltage (Ua, Ub, Uc) in each case as a setting parameter, said setting device (4) including) a separate power amplifier (41a, 41b, 41c, 41d) for each strand (51, 52, 53; 61, 62), so that the setting parameter can be regulated for each strand (51, 52, 53; 61, 62) independently of the setting parameters for the other strands (51, 52, 53; 61, 62) and at least one common connection point (VP) being provided to which at least two of said strands (51, 52, 53; 61, 62) are connected, and wherein an additional active control element (44) is provided for shifting the potential of said connection point (VP).

Abstract: The invention relates to a self-expanding cannula (1), in particular a self-expanding cardiac cannula, providing a conduit through a skin (3) between an inside of a corpus (2) and an outside of the corpus (2). Said self-expanding cannula (1) includes a body (100) encompassing a lumen (110) extending essentially axially along a center-line (120), and has a distal-end (130) to be positioned outside of the corpus (2) for attachment to an extracorporeal fluid handling system (4), in particular to a blood handling system (4) comprising a blood pump, and having a proximal-end (140) to be positioned inside of the corpus (2), for attachment to an organ of an human or an animal, in particular for attachment to a wall (9) of a heart or to the wall (9) of an associated vessel. The body (100) of the self-expanding cannula (1) is constructed from a braided-wire (150), so that the self-expanding cannula (1) is capable of expanding from a closed diameter (D1) to an opened diameter (D2).

Abstract: The invention relates to an expandable conduit-guide (1) providing a leak-tight conduit through a skin (3) between an inside of a corpus (2) and an outside of the corpus (2). Said conduit-guide (1) includes a body (100) encompassing a lumen (110) extending essentially axially along a center-line (120), and has a distal-end (130) to be positioned outside of the corpus (2), and a proximal-end (140) to be positioned inside of the corpus (2), so that a medical device (4) can be placed in and passed through the lumen (110) between the distal-end (130) and the proximal-end (140).

Abstract: The invention relates to a pump-inflow-cannula (1) providing a blood conduit from a heart (2) and/or from an associated vessel to an external blood handling system, said pump-inflow-cannula (1) comprising a body (3), encompassing an inflow-lumen (4), extending essentially axially along a center-line (5), having a distal-end (6) for an attachment of the inflow-lumen (4) to said blood handling system, and having a proximal-end (7) for an introduction of blood from the heart (2) and/or from the associated vessel into the inflow-lumen (4). At the proximal-end (7) at least one angled-hole (8), extending around a longitudinal hole-axis (9) is provided, and said hole-axis (9) includes a presettable hole-angle (?) with the center-line (5) of the inflow-lumen (4), wherein said body (3) of the pump-inflow-cannula (1) comprises a reinforcement-means (10).

Abstract: The invention relates to a rotary pump (1) including a rotor (3) arranged in a closed pump housing (2) which is in operative connection with a drive (5) for the pumping of a fluid (4), wherein an inlet opening (6) is provided at the pump housing (2) for the intake of the fluid (4) into the pump housing (2) and an outlet opening (7) is provided at the pump housing (2) for conveying the fluid (4) out of the pump housing into a storage container (8) which is at least partially filled with the fluid (4). In accordance with the invention the outlet opening (7) is arranged and designed at the pump housing in such a way that the fluid (4) can be conveyed out of the pump housing (2) through the outlet opening (7) to the storage container (8) directly and free of ducting. The invention further relates to a hydrodynamic mixer (100) with a rotary pump (1) in accordance with the invention and also to the use of the rotary pump (1) and of the hydrodynamic mixer (100) for the processing of a fluid (4).

Abstract: The invention relates to a pump-inflow-cannula (1) providing a blood conduit from a heart (2) and/or from an associated vessel to an external blood handling system. Said pump-inflow-cannula comprises a body (3), encompassing an essentially axially extending inflow-lumen (4), having a distal-end (5) for an attachment of the inflow-lumen (4) to said blood handling system, and having a proximal-end (6) for an introduction of blood from the heart (2) and/or from the associated vessel into the inflow-lumen (4), wherein at least one projection (7) is provided at the proximal-end (6) to deflect a heart muscle from intruding into the inflow-lumen (4), wherein said body (3) of the pump-inflow-cannula comprises a reinforcement-means (8). The invention is also related to a pump-outflow-cannula (19) and to a blood managing system comprising a pump-inflow-cannula and a pump-outflow-cannula in accordance with the present invention.

Abstract: A magnetically journalled rotational arrangement includes a substantially disc-shaped or ring-shaped rotor and a stator. The stator includes structure for the production of a field which produces a rotation of the rotor. The rotor has structure which produce a unipolar bias magnetization flux which is spatially modulated when viewed in the circumferential direction.

Abstract: A method and a pump apparatus are provided for the generation of an adjustable, substantially constant volume flow of a fluid by means of a pump apparatus, wherein the fluid (5) is forwarded by the pump apparatus (1) from a reservoir (2) into a flow connection (4). A rotary pump (1) is used as the pump apparatus and the rotary pump (1) is operated at an efficiency which is less than half the maximum efficiency (?max) of the rotary pump (1).

Abstract: A dispensing apparatus is proposed for a fluid having a supply tank (2) for the fluid which has an outlet (4) which can be connected to a pressure line (5) for the fluid (F), and having a rotary pump (3) which has a rotor (31) for conveying the fluid (F) into the pressure line, with the rotor (31) for the mixing of the fluid being arranged directly in the outlet (4) of the supply tank (2).

Abstract: A measuring apparatus (1) for determining the flow (Q) of a fluid (2). The apparatus has a hollow body (3), with an inflow (4) and an outflow (5) for the fluid (2). A magnetic sample (6) is movably arranged in the hollow body (3) and can be acted upon with a working pressure by the fluid (2). The measuring apparatus (1) further has at least one position sensor (7) to determine the position of the magnetic sample (6), an electromagnet (8) to exert a magnetic force on the magnetic sample (6), and a control device (9) for the electromagnet (8) which is connected signal-wise to the position sensor (7). The control device (9) includes regulating means (10) which control the electromagnet (8) with the aid of a signal of the position sensor (7) so that the magnetic sample (6) is held in a position (X) against the working pressure, with the magnetic sample (6) being designed and arranged such that the fluid (2) can flow through the hollow body (3) from the inflow (4) to the outflow (5).

Abstract: The invention relates to an economical, non-wearing, electrical permanent magnet drive for actively controlling the rotor position in three degree of freedom. The stator windings produce superimposed fields with different pole numbers in the pole pitches by unsymmetrical magnetomotive force distributions.

Abstract: A method for floating at least one substance for growing a tissue part in a bioreactor. The method includes providing at least one substance consisting of one of a tissue part, a scaffold having cells deposited thereon, and a scaffold including a tissue part thereon. The method further includes further acting upon the substance with fluid, wherein the fluid holds the substance in free floatation. The fluid flows in a direction counter to gravity when a density of the substance is greater than a density of the fluid, and in a direction counter to buoyancy when a density of the substance is less than a density of the fluid. The bioreactor for floating at least one substance for growing a tissue part includes a container including a first flow chamber and at least one substance consisting of one of a tissue part, a scaffold having cells deposited thereon, and a scaffold including a tissue part thereon. The substance is acted upon with fluid. The bioreactor further includes an apparatus for conveying the fluid.

Abstract: A filter apparatus is provided for the filtering of substances from a fluid having a filter housing (2) which bounds a filter space (6) and which has an inlet (3) and an outlet (4) for the fluid to be filtered and having a filter element (5) which is provided in the filter space (6) and which is designed and arranged such that the filtering fluid can only flow through the filter element (5) from the inlet (3) to the outlet (4) of the filter housing (2) in operation, wherein a heating device (10) is provided for the heating of the fluid which includes a microwave source (11) in order to act on the fluid by microwaves.