Hollow fiber membrane transport cartridge

Patent metadata

Field	Value
Publication number	US-12420235-B2
Application number	US-202017788057-A
Country	US
Kind code	B2
Filing date	Dec 29, 2020
Priority date	Dec 31, 2019
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

The present disclosure relates to a cartridge for a plurality of dry hollow fiber membranes having a large inner diameter. The cartridge fastens the capillaries in their position and protects them from damage. The present disclosure also relates to an apparatus and a process for cutting a plurality of dry hollow fiber membranes having a large inner diameter.

First claim

The invention claimed is:

1. A cartridge for holding a plurality of hollow fiber membranes, wherein each of the plurality of hollow fiber membranes has an outer diameter which is larger than 3 mm and smaller than 4.5 mm, said cartridge comprising
i) a bottom plate comprising a first underside, a first length, a first width, and a first plurality of parallel notches having a semicircular profile with a first diameter matching the outer diameter of the plurality of hollow fiber membranes, wherein each of the first plurality of parallel notches comprises a wall, and wherein the wall of each of the first plurality of parallel notches comprises at least one bore connecting the wall of the first plurality of parallel notches with the first underside of the bottom plate; and
ii) a top cover comprising a second underside, a second length, a second width, one or more longitudinal sides configured to cover the bottom plate and to be attached to the bottom plate, wherein the second length and the second width match the first length and the first width of the bottom plate, wherein the second underside of the top cover comprises a second plurality of parallel notches having a semicircular profile with a second diameter matching the outer diameter of the plurality of hollow fiber membranes, wherein the second plurality of parallel notches matches the first plurality of parallel notches in the bottom plate, wherein the top cover comprises a hinge located near an edge of one of the longitudinal sides of the top cover, and a moveable frame attached to the hinge and rotatable around the hinge to open or close the cartridge, wherein the moveable frame comprises a first bracket, a second bracket, and a cover plate attached to the first bracket and the second bracket, wherein the cover plate comprises a plurality of recesses, wherein each of the plurality of recesses surrounds one of the hollow fiber membranes when the cartridge is closed.

2. The cartridge of claim 1 , further configured to hold a plurality of hollow fiber membranes in the range of 5 to 8.

3. The cartridge of claim 1 , wherein the wall of the first plurality of notches in the bottom plate comprises an elongated groove in fluid connection with the bore.

4. The cartridge of claim 1 , wherein the top cover and the bottom plate can be attached to each other by mortise and tenon joints.

5. The cartridge of claim 1 , wherein the top cover comprises a sealing element comprised of an elastic material, having an elongated shape, and extending in a direction perpendicular to the first plurality of parallel notches present in the top cover.

6. A device for cutting a plurality of hollow fiber membranes, the device comprising:
i. a base plate comprising
a) a plurality of fiber supports aligned in parallel rows on the base plate, wherein each of the plurality of fiber supports comprises a suction means for supporting a hollow fiber membrane and fastening the hollow fiber membrane to the plurality of fiber supports, wherein the hollow fiber membrane comprises a longitudinal axis, and, wherein each of the plurality of fiber supports comprises a notch extending in a direction perpendicular to the longitudinal axis of the hollow fiber membrane, and wherein each notch of the plurality of fiber supports of each row are aligned;
b) suction means for attaching a plurality of cartridges according to claim 1 to the base plate in-between the plurality of fiber supports aligned in parallel rows, wherein each of the plurality of cartridges comprises a fiber compartment so that the fiber compartments of the cartridges are aligned with the plurality of fiber supports;
c) a first plurality of bores which match a second plurality of bores of the bottom plates of the cartridges according to claim 1 and connection of the first plurality of bores and the second plurality of bores to the suction means;

ii. the plurality of cartridges according to claim 1 being attached to the base plate; and
iii. a cutting unit comprising at least two blades or knives configured to be inserted into the plurality of notches of the aligned plurality of fiber supports and to cut the plurality of hollow fiber membranes.

7. The device of claim 6 , wherein the suction means comprise a vacuum pump.

8. The device of claim 6 , wherein four parallel rows of fiber supports are present on the base plate, and wherein three parallel rows of cartridges are arranged between the four parallel rows of fiber supports.

9. The device of claim 8 , wherein each of the three parallel rows of cartridges comprises two cartridges.

10. A process for the production of a plurality of hollow fiber membranes having a predefined length, said process comprising the steps of:
i) attaching a plurality of hollow fiber membranes onto the plurality of fiber supports of the cutting device of claim 6 , wherein the orientation of the plurality of hollow fiber membranes is perpendicular to the parallel rows of the plurality of fiber supports,
ii) closing the plurality of cartridges of claim 6 to fasten the plurality of hollow fiber membranes in a fixed position; and
iii) cutting the plurality of hollow fiber membranes into sections having a predefined length by inserting blades into the plurality of notches of the plurality of fiber supports.

11. The process of claim 10 , wherein the plurality of cartridges attached to the base plate comprise a plurality of bottom plates mounted to the base plate first,
then the plurality of hollow fiber membranes is attached onto the plurality of fiber supports and fastened by suction, subsequently a plurality of top plates of the plurality of cartridges are placed onto their corresponding bottom plates and a plurality of moveable frames are moved into a closed position, and
then the plurality of hollow fiber membranes are cut into sections having a predefined length by inserting blades into the plurality of notches of the plurality of fiber supports.

12. The process of claim 10 , wherein the predefined length of the sections of the plurality of hollow fiber membranes is in the range of 5 cm to 10 cm.

13. The process of claim 11 , wherein the predefined length of the sections of the plurality of hollow fiber membranes is in the range of 5 cm to 10 cm.

14. The device of claim 7 , wherein four parallel rows of fiber supports are present on the base plate, and wherein three parallel rows of cartridges are arranged between the four parallel rows of fiber supports.

Assignees

• Gambro Lundia Ab

Inventors

• Beck Christof
• Blickle Rainer
• Ermantraut Stefan
• Hertzler Bernd
• Wagner Steffen

Classifications

• B01D2313/025

  Specific membrane holders · CPC title

• B01D2323/62

  Cutting the membrane · CPC title

• B01D2323/42

  Details of membrane preparation apparatus · CPC title

• B01D63/0231 Primary

  using supporting structures, e.g. filaments for weaving mats · CPC title