Patent · US Active

Rotational pump and methods for controlling rotational pumps

US8747293B2 · kind B2 · utility

20Cited by

4References

13Claims

0Family size

Assignee

Berlin Heart GmbH · DE

Inventors

Andreas Arndt · Dalbke, DE
Kurt Graichen · Berlin, DE
Peter Nüsser · Kleinmachnow, DE

Key dates

Filing date	Aug 1, 2008
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Oct 2, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2205/3344
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A rotational pump capable of running at a rotational speed (n) having a system for direct or indirect measurement of pressure difference or flow rate across the pump, wherein a control system is designed to calculate an index of pulsatility (PI) of the pressure difference or flow rate, estimating the gradient of PI with respect to the rotational speed (dPI/dn) and regulating the dPI/dn to a pre-defined set-point or regulating the pump in a way that the dPI/dn is minimal.

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