US 10,376,622 B2
Prevention of aortic valve fusion
Victor Poirier, Concord, MA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Jul. 12, 2018, as Appl. No. 16/34,129.
Application 15/601,781 is a division of application No. 14/022,312, filed on Sep. 10, 2013, granted, now 9,687,596.
Application 16/034,129 is a continuation of application No. 15/601,781, filed on May 22, 2017, granted, now 10,046,098.
Application 14/022,312 is a continuation of application No. 12/394,185, filed on Feb. 27, 2009, granted, now 8,562,507.
Prior Publication US 2019/0001035 A1, Jan. 3, 2019
Int. Cl. A61M 1/10 (2006.01); A61M 1/12 (2006.01)
CPC A61M 1/1086 (2013.01) [A61M 1/122 (2014.02); A61M 1/101 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/3351 (2013.01); A61M 2205/3355 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of controlling a blood pump to facilitate gradual weaning of a patient from the blood pump, the blood pump receiving a flow of blood from a ventricle of the patient and outputting the flow of blood to an artery of the patient, the method comprising:
controlling, by a controller, a speed of the blood pump over a first period of time encompassing multiple contractions of the ventricle to provide circulatory support to the patient to maintain a positive level of systolic blood pressure within the ventricle within a first predetermined range;
subsequent to the first period of time, controlling, by the controller, the speed of the blood pump over a second period of time encompassing multiple contractions of the ventricle to provide a reduced level of circulatory support to the patient relative to the circulatory support provided to the patient over the first period of time;
subsequent to the second period of time, controlling, by the controller, the speed of the blood pump over a third period of time encompassing multiple contractions of the ventricle to provide circulatory support to the patient to maintain a positive level of systolic blood pressure within the ventricle within the first predetermined range; and
determining, by the controller, whether the ventricle provided circulatory support to the patient over the second period of time that exceeded a predetermined minimum level of circulatory support.