Bus systems with improved yield and methods for the preservation of concentrated platelets in platelet-rich plasma

摘要

A method for separating platelets from a platelet-rich suspension comprising rotating a separation zone about an axis (14) at a given angular velocity ( OMEGA ), the separation zone including a low-G side (16) located closer to the rotational axis (14) than the other, high-G (18) to create between them a chamber (10) having a radial thickness (h) and an axial height (Z) measured with respect to the axis (14) of rotation, and an inlet (20) for introducing a platelet-rich suspension and the separation zone establishing a relationship between the radial thickness (h) and the axial height (Z) of the chamber (10) that taking into account the given angular velocity of rotation ( OMEGA ) and the given kinematic viscosity (v) of the platelet-rich suspension introduced through the inlet (20), represents a value ( lambda ) that is less than 700, where lambda = (2h3)/(Z).