A vacuum membrane distillation module includes a center core; a plurality of hollow fiber membranes; an shell which cylindrically houses the bundle of hollow fiber membranes and the center core; at least one circumferential retaining structures retaining the ends of the plurality of hollow fiber membrane; at least one end cap housing the at least one circumferential retaining structures; at least one supporting rod extending in a longitudinal direction; a potting material, which is contained between (i) an inner boundary formed by the outer surface of the center core, and (ii) a peripheral boundary formed by the inner surface of the least one circumferential retaining structure; and at least one of (i) the outer surface of the at least one end section of the center core and (ii) the inner surface of the least one circumferential retaining structure comprises an adaptation to enhance strength of bonding with the potting material.

A filter module includes a housing having a housing part and two end caps attached to the housing part. A bundle of semipermeable hollow fibers extend along the housing part and within the housing. A first liquid chamber extends within the fibers, and a second liquid chamber extends within the housing but outside the fibers. A potting compound forms a separating seal between the first and second liquid chambers. Each end cap has a stub that can be plugged onto the housing part, forming a receiving contour. The stub transitions into an end contour over a convex rounded section. The end contour has a through-opening lined by a rim that receives the fiber bundle and forms a protrusion. The protrusion forms a receiving area for the potting compound in the rounded section between the receiving contour and the protrusion.

The invention relates to a hollow fiber membrane filter comprising a plurality of hollow fiber membranes and at least two support rings, wherein the hollow fiber membranes are each enclosed by a respective support ring in a respective end portion of the hollow fiber membrane filter and are cast in a potting mass, wherein the respective support rings have a circumferential projection arranged at the upper edge which projects beyond the outer side of the circumferential side wall of a respective support ring, and wherein the circumferential projection rests on the respective terminal edges of the first and second end portions of the cylindrical housing of the hollow fiber membrane filter.

The invention relates to extracorporeal blood circuits, and components thereof (e.g., hollow fiber membranes, potted bundles, and blood tubing), including 0.005% to 10% (w/w) surface modifying macromolecule. The extracorporeal blood circuits have an antithrombogenic surface and can be used in hemofiltration, hemodialysis, hemodiafiltration, hemoconcentration, blood oxygenation, and related uses.

A hollow fiber membrane module according to an aspect of the present disclosure comprises: a hollow fiber membrane bundle that has a plurality of hollow fiber membranes aligned in one direction; a housing that accommodates the hollow fiber membrane bundle; and a potting portion provided around both ends or one end of the hollow fiber membrane bundle, in which space between an outer surface of the hollow fiber membranes and an inner surface of the housing is filled with a potting agent, wherein each of the hollow fiber membranes has a body portion, and an enlarged-diameter portion provided at both ends or one end of the body portion and having an inner diameter enlarged as compared to the body portion, and the enlarged-diameter portion is buried in the potting portion.

A cartridge is provided for dialysis or other blood processing therapy. In the cartridge, fibers may be substantially uniformly distributed near a midplane, but near an end, in the inter fiber space, there may be void flow channels, which may cause fluid flow in the inter fiber space to transition within a short region to uniform flow with minimal stagnation zones. Void flow channels may be be radially oriented, introducing fluid from the outer circumference, or axially oriented, introducing fluid along the axial direction through passageways through the potting material. The fluid flow in the inter fiber space may be perpendicular to the fibers, or radial with respect to a cartridge longitudinal axis. The cartridge may have blood flow in the inter fiber space, and flow of dialysate or ultrafiltrate in the lumens of the fibers, or the opposite situation.

A hollow fiber fluid separation device includes a hollow fiber cartridge, comprising a plurality of hollow fiber membranes arranged around a central tubular core, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle. The tubesheets have boreholes in fluid communication with bores of the hollow fiber membrane. In at least one of the tubesheets, the boreholes are formed radially and are in communication with the central tubular core. The hollow fiber fluid separation device can be utilized in liquid separation applications such as ultrafiltration and in gas separation processes such as air separation. The design disclosed herein is light weight and compact and is particularly advantageous at high operating temperatures when the pressure of the feed fluid introduced into the bores of hollow fibers is higher than the pressure on the shell side of the device.

A method for potting hollow fiber membranes comprises the steps of forming a bundle of membranes with a layer of adhesive; covering one end of the bundle with a permeate pan, the ends of the membranes protruding upwards into the permeate pan; and flowing a liquid potting material into the permeate pan. The bundle may be tilted to more quickly distribute the liquid potting material. An apparatus for filtering liquid with hollow fiber membranes comprises a bundle of membranes, a layer of adhesive spaced from the end of the bundle, a permeate pan covering the end of the bundle, and a header formed with the membranes, the adhesive and the pan.

A method for potting hollow fiber membranes comprises the steps of forming a bundle of membranes with a layer of adhesive; covering one end of the bundle with a permeate pan, the ends of the membranes protruding upwards into the permeate pan; and flowing a liquid potting material into the permeate pan. The bundle may be tilted to more quickly distribute the liquid potting material. An apparatus for filtering liquid with hollow fiber membranes comprises a bundle of membranes, a layer of adhesive spaced from the end of the bundle, a permeate pan covering the end of the bundle, and a header formed with the membranes, the adhesive and the pan.

The present disclosure relates to a casting device for producing a potting for a gas exchanger and a method for producing such a potting. Accordingly, a casting device is proposed for producing a potting for a gas exchanger under the influence of a centrifugal force, comprising a distributor comprising an opening and at least one continuous channel and adapted to receive a fluid potting material via the opening and to guide it via the at least one channel. The casting device further comprises a cassette defining an inner cavity for receiving gas exchanger elements and which is fluidly connected to the at least one channel. The distributor comprises at least two distributor components which, in the assembled state of the distributor, define the opening, are connected to one another in a leak-proof manner, and form the at least one channel between adjacent regions.