US 12,078,637 B2
Apparatus and method for analyzing platelet aggregation
Charlene Yuan, Plymouth, MN (US); Trevor Huang, Maple Grove, MN (US); and Tessy Kanayinkal, Maple Grove, MN (US)
Assigned to Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed by Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed on Mar. 16, 2021, as Appl. No. 17/203,030.
Claims priority of provisional application 63/009,054, filed on Apr. 13, 2020.
Prior Publication US 2021/0318308 A1, Oct. 14, 2021
Int. Cl. G01N 33/569 (2006.01); B01L 3/00 (2006.01); G01N 33/86 (2006.01)
CPC G01N 33/56966 (2013.01) [B01L 3/502 (2013.01); G01N 33/86 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method carried out by a system configured to analyze platelet aggregation, the method comprising: retaining a ferromagnetic object at an elevation of a chamber in which a sample of blood or plasma is disposed, wherein the ferromagnetic object is retained at the elevation for a period of time, wherein the period of time that the ferromagnetic object is retained at the elevation is a period of time sufficient for platelet aggregation in the blood or plasma to occur; releasing the ferromagnetic object from the elevation to allow the ferromagnetic object to drop; measuring the ferromagnetic object minimal position following the release of the ferromagnetic object, wherein the object minimal position is the distance from a bottom of the chamber; and
further comprising correlating the object minimal position with platelet aggregation of the sample of blood or plasma.