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Pub. No.:    WO/1981/001255    International Application No.:    PCT/US1980/001441
Publication Date: 14.05.1981 International Filing Date: 28.10.1980
B04B 5/04 (2006.01)
Priority Data:
90505 01.11.1979 US
Abstract: front page image
(EN)A decanting centrifuge (10) particularly useful for clinical laboratory procedures requiring the washing and packing of red cells or other particles. An electromagnet (18) having upper (28) and lower (29) planar pole faces rotates to drive a removable rotor head assembly (40) and, during the decant cycle, holds a plurality of magnetically attractable tube carriers (43) in substantially vertical positions against its planar pole faces (28, 29) so that supernatant liquid is centrifugally discharged from the open upper ends of the tubes (57). Each tube carrier (43) comprises a tube-holding member (50) and a contact member (51), both of which have their upper end portions pivotally suspended from a support ring (46) which is provided by the rotor assembly (40) and which is coaxial with the rotatable magnet (18). The planar surfaces of the contact members (64) engage the planar pole faces (28, 29) when the centrifuge (10) is at rest and also when the electromagnet (18) is energized and the rotor assembly (40) is rotated to decant the liquid contents of the centrifuge tubes (57). Each tube-holding member (50) has two outer side walls (50b) which meet along converging planes so that such walls (50b) will engage a centrifuge tube (57) along a pair of spaced parallel lines (63) during centrifuge operation, thereby permitting centrifuge tubes (57) of different selected outside dimensions to be supported within the open-topped cavity of such tube-holding member (50).
(FR)Une centrifugeuse de decantation (10) est particulierement utile dans des procedes de laboratoire clinique necessitant le lavage et l'empaquetage de globules rouges ou autres particules. Un electro aimant (18) ayant des faces polaires planes superieure (28) et inferieure (29) tourne pour entrainer un assemblage a tete de rotor amovible (40) et, pendant le cycle de decantation, maintient une pluralite de porte-tubes a attraction magnetique (43) dans des positions sensiblement verticales contre ses faces polaires planes (28, 29) de sorte que le liquide surnageant soit decharge par centrifugation par les extremites superieures ouvertes des tubes (57). Chaque porte-tube (43) comprend un organe de maintien de tube (50) et un organe de contact (51), ayant tous deux leur partie extreme superieure suspendue de maniere pivotante a une bague de support (46) qui est de l'assemblage de rotor (40) et qui est coaxiale avec l'aimant rotatif (18). Les surfaces planes des organes de contact (64) engagent les faces polaires planes (28, 29) lorsque la centrifugeuse (10) est au repos et egalement lorsque l'electro-aimant (18) est excite et l'ensemble rotor (40) tourne pour decanter le contenu liquide des tubes centrifuges (57). Chaque organe de maintien de tube (50) possede deux parois laterales externes (50b) qui se rencontrent le long de plans convergents de sorte que ces parois (50b) engagent un tube centrifuge (57) le long d'une paire de lignes paralleles espacees (63) pendant l'operation de centrifugation, permettant ainsi aux tubes de centrifugation (57) ayant des dimensions exterieures choisies differemment d'etre supportes dans la cavite a partie superieure ouverte de l'organe de maintien de tubes (50).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)