Patent · US Active

Cardiac pump with speed adapted for ventricle unloading

US9713663B2 · kind B2 · utility

60Cited by
209References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 30, 2013
Grant dateJul 25, 2017
Priority date—
Expiry dateDec 23, 2034

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61M2205/3334
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.