mechanical pump inserted at some point in the circulation to parallel the activity of the left ventricle and thereby reduce its load.
left-ven·tric·u·lar as·sist de·vice
(left-ven-trik'yŭ-lăr ă-sist' dĕ-vīs') Mechanical pump inserted at some point in the circulation to parallel the activity of the left ventricle and thereby reduce its load.