Title:
METHOD AND APPARATUS FOR CALIBRATION AND USE IN ESTIMATING BLOOD FLOW IN AN INTRAVASCULAR BLOOD PUMP
Document Type and Number:
WIPO Patent Application WO/2019/137911
Kind Code:
A1
Abstract:
A method and an apparatus for use in estimating blood flow in an intravascular blood pump comprise retrieving reference data from a set of reference data obtained in a test environment. The set of reference data comprises, for at least one motor speed at different pump loads, including a first pump load, both a reference motor current (I) of a motor driving the blood pump and an amount of fluid flow through the blood pump. After placement of the blood pump in the patient, a patient-specific motor current for said motor speed at said first pump load is measured, and a motor current deviation value (ΔΙ) is calculated from the reference motor current (I) at said first pump load and patient-specific motor current. Finally, the motor current deviation value ΔΙ is used for estimating a patient-specific blood flow amount through the blood pump.
Inventors:
SIESS THORSTEN (DE)
NIX CHRISTOPH (DE)
BÖNSCH STEFAN (DE)
NIX CHRISTOPH (DE)
BÖNSCH STEFAN (DE)
Application Number:
PCT/EP2019/050339
Publication Date:
July 18, 2019
Filing Date:
January 08, 2019
Export Citation:
Assignee:
ABIOMED EUROPE GMBH (DE)
International Classes:
A61M1/10; A61M1/12
Foreign References:
| US20090132184A1 | 2009-05-21 | |||
| US7010954B2 | 2006-03-14 |
Attorney, Agent or Firm:
KLUNKER IP PATENTANWÄLTE PARTG MBB (DE)
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