US 4,231,875 AGranted

Diffusion apparatus utilizing tubular semi-permeable membrane

AssigneeGambro AB

InventorsPer-Olov A. V. Carlsson, Kaj O. Stenberg

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Abstract

A diffusion apparatus is disclosed including an outer casing and an inner core within the outer casing providing an annular space therebetween so that a tubular semi-permeable membrane having a first end and a second end and spacing material can be helically wound around the inner core within the annular space. The apparatus includes first fluid directing means communicating with a first fluid within the interior of the tubular semi-permeable membrane at a first end thereof, second fluid directing means communicating with a second fluid within the annular space for contacting the outer surface of the tubular semi-permeable membrane with the second fluid, wherein the first fluid directing means includes channel means integral with the inner core, and third fluid directing means communicating with the first fluid within the interior of the tubular semi-permeable membrane at the second end thereof.

Claims26

Dependent claims

Diffusion apparatus comprising an outer casing, a one-piece inner core disposed within said outer casing defining a diffusion space between said one-piece inner core and said outer casing, so that a tubular semi-permeable membrane having a first end and a second end and a spacing material can be wound about said one-piece inner core within said diffusion space, said one-piece inner core including a first end, a second end, and an aperture on the surface of said one-piece inner core facing said outer casing, said one-piece inner core further including integral inner core first fluid channel means communicating between said aperture on said surface of said one-piece inner core and said first end of said one-piece inner core whereby said one-piece inner core provides for fluid communication between said first end of said inner core and said aperture on said surface of said inner core for communication with a first fluid within the interior of said tubular semi-permeable membrane at the first end thereof, second fluid directing means communicating with a second fluid within said diffusion space for contacting the outer surface of said tubular semi-permeable membrane, and third fluid directing means communicating with said first fluid within the interior of said tubular semi-permeable membrane at the second end thereof.

Diffusion apparatus comprising an outer casing, an inner core disposed within said outer casing defining a diffusion space between said inner core and said outer casing, so that a tubular semi-permeable membrane having a first end and a second end and a spacing material can be wound about said inner core within said diffusion space, first fluid directing means communicating with a first fluid within the interior of said tubular semi-permeable membrane and located at said first end thereof, second fluid directing means communicating with a second fluid within said diffusion space for contacting the outer surface of said tubular semi-permeable membrane, and a one-piece clamping rail located in proximity to said outer casing, said one-piece clamping rail including a first end, a second end, and an aperture on the surface of said one-piece clamping rail facing said inner core, said one-piece clamping rail further including integral clamping rail first fluid channel means communicating between said aperture on said surface of said clamping rail and said first end of said one-piece clamping rail whereby said one-piece clamping rail provides for fluid communication between said first end of said clamping rail and said aperture on said surface of said clamping rail for communication with said first fluid within the interior of said tubular semi-permeable membrane at said second end thereof.

Dependencies are inferred from the claim text.