Magnetic device for sorting biological objects

A magnetic device comprising:

• a soft magnetic center pole having a bottom end and a tapered tip end;
• first and second soft magnetic side poles disposed on opposite sides of the soft magnetic center pole, the first soft magnetic side pole having a first bottom end and a first top end, the second soft magnetic side pole having a second bottom end and a second top end, the first and second top ends each having a chisel edge profile with a bevel side facing outward away from the soft magnetic center pole;
• a magnetic flux source generating magnetic flux in the soft magnetic center pole and the first and second soft magnetic side poles;
• a flexible conduit nestled in a gap formed between the tapered tip end and the bevel sides of the first and second top ends;
• and
• a soft magnetic press operable to push and deform the flexible conduit nestled in the gap,
• wherein the magnetic flux forms a first flux loop between the soft magnetic center pole, the soft magnetic press, and the first soft magnetic side pole and a second flux loop between the soft magnetic center pole, the soft magnetic press, and the second soft magnetic side pole.