EP0525138B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A device for eradicating contaminants in fluids
Assignee: Baxter International Inc
•
Filing: 1991-12-20
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Granted: 1998-09-16
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Expires: 2011-12-20
Abstract
Abstract Systems for treating a fluid carrying a contaminant to which a photoactive material has been bound include a treatment device (12) that defines a relatively narrow, arcuately shaped flow path (26). These systems envelop the path with a radiation chamber (50) that directs radiation from one or more sources (52) into the fluid.
Inventors
- 👤 Ludwig Wolf, Jr.
- 👤 John T. Foley
- 👤 William R. Bratten
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/08; A61M; A61M1/00; A61M1/36; A61M1/3681; A61M1/3683; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; C; C12; C12N; C12N7/00; C12N7/04; A61L2103/00; A61L2103/05
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A device (20',20") for treating a fluid carrying a contaminant to
which a photoactive material has been bound, the material being activated
by exposure to radiation within a prescribed wavelength range to eradicate
the contaminant, the device comprising a treatment chamber (20) shaped
as an arcuate gap (26',26") that extends between an outer cylindrical wall
(22') and an inner cylindrical wall (24') spaced from the outer wall (22'),
the outer wall (22') being transparent to radiation within the prescribed
wavelength and wherein the outer wall (22') comprises an exterior wall of
a generally flexible container (116), and the inner wall (24') comprises the
opposite exterior wall of the flexible container (116) and a generally
cylindrical preformed interior platen (130,138) about which the flexible
container has been attached; characterised in that the outer wall (22') of the container (116) is
exposed to the radiation from an external source to allow the radiation to
pass into the gap (26'26").
Claim 2
Dependent Claim
27 words
A device according to Claim 1 wherein the annular gap is in
communication with an inlet (30,120) for receiving fluid and an outlet
(32,126) for discharging fluid.
Claim 3
Dependent Claim
47 words
A device according to Claim 1 or 2 and further including an
exterior platen (134,140) that nests concentrically about the interior platen
(130,138) to capture the flexible container (116) therebetween, the exterior
platen (134,140) being made of a material that is essentially transparent
to the treatment radiation.
Claim 4
Dependent Claim
51 words
A device according to Claim 1, 2 or 3, wherein the radiation source
includes a generally elliptical reflective surface (54,82) having at least one
focal point within which the source (52,78) is located, the treatment
chamber being located within the reflective surface (54,82) at a focal point
(74,84) of the ellipse.
Claim 5
Dependent Claim
13 words
A device according to Claim 4, comprising a single source (52) of
radiation.
Claim 6
Dependent Claim
46 words
A device according to Claim 5, wherein the elliptical reflective
surface (54) includes two diametrically spaced focal points (72,74), the
single source (52) of radiation being positioned at one (72) of the focal
points and the treatment chamber being positioned at the other focal point
(74).
Claim 7
Dependent Claim
79 words
A device according to Claim 4 wherein the elliptical reflective
surface (82) includes an open end (86) extending along its minor axis (83)
and closed end (88) spaced from the open end and including a focal point
(84), said source (78) of radiation being located at the open end (86) of
the ellipse and facing in the direction of the closed end (88), and the
treatment chamber being located in the closed end (88) at the focal point
(84).
Claim 8
Dependent Claim
16 words
A device according to Claim 4 or 7, comprising at least two
sources (78) of radiation.
Claim 9
Dependent Claim
13 words
A device according to Claim 8 wherein each radiation source (78)
is discrete.
Claim 10
Dependent Claim
14 words
A device according to Claim 9 wherein the sources of radiation (78)
include photodiodes.
References Cited (Backward Citations)
No citation records indexed.
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