Patent ID: 7916289

Claim:
An apparatus for determining shear stress load on particles in a liquid comprising a mechanical container connected to two complementary cylindrical bodies made entirely of glass, each cylindrical body having a first open end, each open end having a plunger fitted therein, a cannula that connects the two cylindrical bodies with Luer Lok connections at respective second ends of the cylindrical bodies, the mechanical container comprising a first locking holder for engaging an end of a plunger extending out of one of the cylindrical bodies and a second locking holder for engaging an end of a plunger extending out of the other of the cylindrical bodies and optionally a locking abutment, oriented adjacent to at least one of the locking holders, a drive apparatus operably connected to the mechanical container and either a cylindrical body or a plunger to move the cylindrical bodies or plungers in a reciprocating fashion with respect to the other, and a digital control unit operably connected to the mechanical container for controlling operational parameters.