US 12,390,170 B2
Methods and systems for controlling a left ventricular assist device
Rahul Agarwal, Los Angeles, CA (US); Allison Connolly, Fremont, CA (US); Yelena Nabutovsky, Mountain View, CA (US); and Julie Prillinger, Redwood City, CA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Oct. 19, 2022, as Appl. No. 17/969,604.
Application 17/969,604 is a continuation of application No. 16/354,922, filed on Mar. 15, 2019, granted, now 11,517,740.
Claims priority of provisional application 62/643,545, filed on Mar. 15, 2018.
Prior Publication US 2023/0096753 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/00 (2021.01); A61B 5/00 (2006.01); A61B 5/0215 (2006.01); A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/221 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/50 (2021.01); A61M 60/531 (2021.01); A61M 60/88 (2021.01)
CPC A61B 5/742 (2013.01) [A61B 5/0215 (2013.01); A61B 5/7405 (2013.01); A61B 5/7455 (2013.01); A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/221 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/50 (2021.01); A61M 60/531 (2021.01); A61M 60/88 (2021.01); A61M 2205/0244 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/50 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/583 (2013.01); A61M 2230/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A blood pump system for use by a patient having a left ventricle, an aorta, and a pulmonary artery, the blood pump system comprising:
a left ventricular assist device (LVAD);
a pulmonary artery (PA) blood pressure sensor configured for generating a pressure signal indicative of a PA blood pressure of the patient; and
a controller configured to:
control operation of the LVAD to pump blood from the left ventricle to the aorta;
process the pressure signal to generate PA blood pressure trending data for the patient indicative of a variation of right ventricular afterload of the patient over a time span of operation of the LVAD; and
adjust at least one operating parameter of the LVAD based on the PA blood pressure trending data for the patient to reduce a deviation between the PA blood pressure of the patient and an ideal PA blood pressure for the patient indicative of an ideal right ventricular afterload for the patient, wherein the ideal PA blood pressure for the patient decreases over the time span of operation of the LVAD in accordance with a predetermined function of elapsed time from implantation of the LVAD.