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:
Dec. 19, 2006
Filed:
Apr. 26, 2002
Peter Nüsser, Berlin, DE;
Johannes Müller, Berlin, DE;
Frank Deus, Berlin, DE;
Peter Göttel, Berlin, DE;
Jan Hoffmann, Berlin, DE;
Kurt Graichen, Berlin, DE;
Andreas Arndt, Berlin, DE;
Tobias Merkel, Kleinmachnow, DE;
Peter Nüsser, Berlin, DE;
Johannes Müller, Berlin, DE;
Frank Deus, Berlin, DE;
Peter Göttel, Berlin, DE;
Jan Hoffmann, Berlin, DE;
Kurt Graichen, Berlin, DE;
Andreas Arndt, Berlin, DE;
Tobias Merkel, Kleinmachnow, DE;
Berlin Heart AG, Berlin, DE;
Abstract
Method for controlling an assist pump for fluid delivery systems with pulsatile pressure. If for example a heart assist pump is driven with a constant number of revolutions, it is achieved, that the blood is also delivered through the assist pump, even when the heart chamber is in the decontraction phase. With the present method it is achieved, that an assist pump only acts supportingly in the pressure phase of the main pump, in such a way, that the pressure difference between the input side and the output side of the assist pump is continuously determined and the number of revolutions of the assist pump is controlled in such a way, that the determined pressure difference does not fall below a predetermined value and the rate of flow does not sink below zero.