The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
Jun. 06, 2013
Heartware, Inc., Miami Lakes, FL (US);
Neil Voskoboynikov, Pembroke Pines, FL (US);
Joel Graham, Sunny Isles, FL (US);
HeartWare, Inc., Miami Lakes, FL (US);
Abstract
A ventricular assist device ('VAD') includes a continuous-flow pump () implantable in fluid communication with a ventricle (V) and an artery (A) of a patient to assist blood flow from the ventricle to the artery. The VAD also includes a control circuit () connected to the pump, the control circuit being configured to direct the pump to operate in a series of cycles. Each cycle may include (i) pumping blood at a first speed (RPM) and at a first flow rate during a first period (t); then (ii) decreasing the speed of the pump from the first speed to a second speed (RPM) during a ramp-down period (t); then (iii) pumping blood at the second speed and at a second flow rate during a second period (t); and then (iv) increasing the speed of the pump from the second speed to the first speed during a ramp-up period (t).