FILTER MODULE
First Claim
1. A filter module (10, 110, 210, 310) having at least one first and at least one second filter stage (20, 30) comprising and/or consisting of hollow fiber membranes (22, 32) which are substantially concentrically arranged, wherein the fiber ends (26, 28, 36, 38) of the hollow fiber membranes (22, 32) are embedded at least partly and/or at least unilaterally in a casting compound, wherein the first filter stage (20) is a filter stage for the filtration of a first medical fluid and the second filter stage (30) is a filter stage for the filtration of a second medical fluid, wherein the first filter stage (20) has unilaterally closed fiber ends (28), wherein a boundary means (40) is provided which surrounds the first filter module (20) and which separates the first filter stage (20) and the second filter stage (30) at least partly from one another and has at least one opening (44) which establishes a fluid communication between the first filter stage (20) and the second filter stage (30).
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Accused Products
Abstract
The present invention relates to a filter module and to a method of manufacturing a hollow fiber membrane bundle having at least two concentrically arranged filter stages. The present invention furthermore relates to a method of manufacturing a hollow fiber membrane bundle, to a disposable and to a blood treatment apparatus.
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Citations
22 Claims
- 1. A filter module (10, 110, 210, 310) having at least one first and at least one second filter stage (20, 30) comprising and/or consisting of hollow fiber membranes (22, 32) which are substantially concentrically arranged, wherein the fiber ends (26, 28, 36, 38) of the hollow fiber membranes (22, 32) are embedded at least partly and/or at least unilaterally in a casting compound, wherein the first filter stage (20) is a filter stage for the filtration of a first medical fluid and the second filter stage (30) is a filter stage for the filtration of a second medical fluid, wherein the first filter stage (20) has unilaterally closed fiber ends (28), wherein a boundary means (40) is provided which surrounds the first filter module (20) and which separates the first filter stage (20) and the second filter stage (30) at least partly from one another and has at least one opening (44) which establishes a fluid communication between the first filter stage (20) and the second filter stage (30).
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16. A method manufacturing a hollow fiber membrane bundle having at least two concentrically arranged filter stages (20, 30) which includes at least the following steps:
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surrounding a first hollow fiber membrane bundle for a first filter stage in a film, tube film and/or a tube; embedding the first filtration stage (20) in hollow fibers of the second filtration stage (30); molding the first and second filtration stages (20, 30) by a casting compound in a molding process; cutting off an end region of the casting compound, including closed fiber ends, for exposing and laying open all fiber ends; and closing a fiber end side of the first filtration Stage (20) by thermal influence and melting the fiber end side and the casting compound. - View Dependent Claims (17, 18, 19, 20)
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- 21. A disposable comprising at least one filter module (10, 110, 210, 310), wherein the disposable preferably is and/or comprises a disposable cassette.
Specification