| 摘要 |
1386303 Magnetic separators TECHNICON INSTRUMENTS CORP 12 April 1972 [13 April 1971] 16849/72 Heading B2J [Also in Division A5] Apparatus for the separation of lymphocytes from whole blood samples comprises a frame 46 having clamps 48 and guides 50 for supporting a hypodermic syringe 10 containing a blood sample in which leucocytes have been tagged with magnetic particles; a container 90 for the separated lymphocytes: a separator constituted by a magnet (58) with pole pieces (64), (66) Figs. 7 and 8 (not shown); and a transfer tube 74 which passes from the frame 46, through the separator and back to the frame 46, and which has sealed ends 76, 78 held in supports 92, 82 adjacent the upper ends of the container 90 and the syringe 10 respectively. In use, a drive mechanism 52 working in a slot 54 urges the plunger 14 upwardly so that the needle of the syringe 10 punctures the tube 74, the other end of which has also been punctured by a hypodermic needle 96 communicating with the container 90. As the plunger 14 continues to move upwardly blood is forced through the tube 74 and the flowing stream passes through the separator, where the magnetic field acts to hold the magnetically tagged leucocytes against the bottom of the tube yet allows the lymphocytes to flow through the tube for collection in container 90. |
