| 摘要 |
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). |
