GB1373671A - Centrifuge for treating liquid - Google Patents

Centrifuge for treating liquid

Info

Publication number
GB1373671A
GB1373671A GB1130472A GB1130472A GB1373671A GB 1373671 A GB1373671 A GB 1373671A GB 1130472 A GB1130472 A GB 1130472A GB 1130472 A GB1130472 A GB 1130472A GB 1373671 A GB1373671 A GB 1373671A
Authority
GB
United Kingdom
Prior art keywords
rotor
liquid
conduit
containers
compartment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1130472A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGA AB
Original Assignee
AGA AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to SE331071A priority Critical patent/SE354581B/xx
Application filed by AGA AB filed Critical AGA AB
Publication of GB1373671A publication Critical patent/GB1373671A/en
Application status is Expired legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B5/00Other centrifuges
    • B04B5/04Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0428Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles with flexible receptacles

Abstract

1373671 Centrifugal separator AGA AB 10 March 1972 [15 March 1971] 11304/72 Heading B2P A centrifuge for treating liquid by separating it into fractions of different densities, and/or for washing solid particles, e.g. blood cells, suspended in the liquid, comprises a rotor 11; a plurality of collapsible closed containers 16, 17 which are disposed in the rotor for rotation therewith and which are interconnected by means of a collapsible conduit 26 (30) for passing liquid between the containers, a first one (17) of the containers being adapted to initially hold a discrete quantity of a liquid to be treated and a second one (16) of the containers being adapted to receive a low density liquid fraction from the first container and/or to initially hold a discrete quantity of treating solution; and a peristaltic pump 32 mounted on the rotor for rotation therewith and acting on the flexible conduit 26 (30) to selectively move liquid through the conduit and prevent liquid flow through the conduit. The rotor 11 includes a bowl 13 which is journalled in a bearing 15 and is driven via belting by means of a motor 12. The containers are made of flexible sheet material, e.g. a laminate of polyethylene and polyester. The lower container 16 is made of three circular sheets 18, 19, 20 which define between them compartments 23, 24 and the collapsible conduits 26, 30. The compartment 23, when treating blood, initially holds wash solution and compartment 24 is initially empty. The conduit 26 serves for the flow of wash solution from compartment 23 to a connecting tube 27 secured to the upper sheet 20. The upper compartment 17 consists of sheets 33, 34 joined to define between them an annular compartment which initially holds a quantity of blood cells suspended in a liquid preservative and which communicates with the tube 27 via a collapsible conduit 38 and a tube 37. A filler ring 40 and a backing plate 41 are disposed between the containers 16 and 17. A clamping mechanism, 45, 46, 47 cooperates with a cover plate 42 and the bowl 13 to hold down an annular body 44 made of soft rubber mixed with lead granules against the containers. A photoelectric detector 48 signals the presence of red blood cells in tube 37. The pump 32 comprises two concentric and independently movable circular groups of rollers 49 and 52 which respectively engage conduits 26 and 30 through a flexible diaphragm 55 to compress these conduits against backing plate 41. Rotor members 50 and 53 on which the rollers 49 and 52 are respectively mounted are normally stationary with respect to the centrifuge rotor 11 but can be slowly rotated with respect thereto. Clockwise rotation of rotor member 53 is derived from the journal member 14 of the bowl 13 through gears 56, 57 and a clutch 58 and anti-clockwise rotation of rotor member 53 through gears 59, 60 and a clutch 61. For treating blood cells in container 17, the centrifuge rotor 11 is caused to rotate with clutches 58, 61 disengaged so that pump rotor members 50, 53 rotate in unison with the rotor 11 owing to the friction between the rollers 49, 52 and diaphragm 55. Under the influence of centrifugal force the heavy soft rubber of body 44 is forced outwardly to apply an external pressure to containers 16, 17 which forces the liquid therein inwardly causing conduits 26, 30 to expand. But since the rollers 49, 52 are stationary with respect to rotor 11 and containers 16, 17 and compress the conduits 26, 30 no liquid is permitted to pass through the latter. The red blood cells accumulate in the radially outer portion of container 17 while the lighter preservative liquid is collected radially inwardly. Clutch 61 is then engaged to cause anti-clockwise rotation of rotor member 53 and pumping of the preservative liquid from container 17 into compartment 24 of container 16 through conduit 38, tubes 37, 27 and conduit 30. Since rotor member 50 is still stationary, with respect to rotor 11, the preservative liquid is prevented from flowing through conduit 26. Where detector 48 signals the presence of red blood cells in tube 37, clutch 61 is -again disengaged and clutch 58 engaged to cause clockwise rotation of rotor member 50 and pumping of wash solution from compartment 23 into container 17 through conduit 26, tubes 27, 37 and conduit 38 while rotor member 53 is held stationary to prevent flow through conduit 30. When sufficient wash solution has been transferred, clutch 58 is disengaged so that both conduits 26, 30 are closed whereupon rotor 11 is rapidly braked to low speed to agitate and thoroughly mix the wash solution and blood cells. The wash solution is then separated from the blood cells and transferred to compartment 24 of container 16 in the same manner as the preservative liquid. The washing step may be repeated many times.
GB1130472A 1971-03-15 1972-03-10 Centrifuge for treating liquid Expired GB1373671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE331071A SE354581B (en) 1971-03-15 1971-03-15

Publications (1)

Publication Number Publication Date
GB1373671A true GB1373671A (en) 1974-11-13

Family

ID=20261836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1130472A Expired GB1373671A (en) 1971-03-15 1972-03-10 Centrifuge for treating liquid

Country Status (5)

Country Link
DE (1) DE2212242B2 (en)
FR (1) FR2130191B1 (en)
GB (1) GB1373671A (en)
IT (1) IT953956B (en)
SE (1) SE354581B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9302369D0 (en) * 1993-07-08 1993-07-08 Omega Medicinteknik Ab Paassystem intended Foer centrifugalseparationsamt an vaendning this paassystem
DE4340678C2 (en) * 1993-11-30 2000-07-06 Hettich Andreas Gmbh & Co Kg Centrifuge for separating blood components and similar liquids
SE9700495D0 (en) 1997-02-12 1997-02-12 Omega Medicinteknik Ab Method and tubular bag system and centrifuge for processing blood
SE516321C2 (en) 1999-05-31 2001-12-17 Gambro Inc Spin for the treatment of blood and blood components
SE517032C2 (en) 1999-10-26 2002-04-02 Gambro Inc A method and apparatus for processing blood and blood components
EP1494735B1 (en) 2002-04-16 2008-01-02 Gambro BCT, Inc. Blood component processing system and method
US9079194B2 (en) 2010-07-19 2015-07-14 Terumo Bct, Inc. Centrifuge for processing blood and blood components

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE332906B (en) * 1969-08-11 1971-02-22 Aga Ab

Also Published As

Publication number Publication date
FR2130191A1 (en) 1972-11-03
SE354581B (en) 1973-03-19
DE2212242A1 (en) 1972-09-28
FR2130191B1 (en) 1976-10-29
IT953956B (en) 1973-08-10
DE2212242B2 (en) 1976-11-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee