Global Patent Index - EP 2967502 A4

EP 2967502 A4 20161116 - SYSTEM AND METHOD FOR CHARACTERIZING CIRCULATORY BLOOD FLOW

Title (en)

SYSTEM AND METHOD FOR CHARACTERIZING CIRCULATORY BLOOD FLOW

Title (de)

SYSTEM UND VERFAHREN ZUR CHARAKTERISIERUNG EINES ZIRKULIERENDEN BLUTFLUSSES

Title (fr)

SYSTÈME ET PROCÉDÉ DE CARACTÉRISATION DE FLUX SANGUIN CIRCULANT

Publication

EP 2967502 A4 20161116 (EN)

Application

EP 14762395 A 20140314

Priority

  • US 201313839534 A 20130315
  • US 2014028167 W 20140314

Abstract (en)

[origin: WO2014143962A2] A computer-implemented method for characterizing circulatory blood volume and autoregulatory compensatory mechanisms to maintain circulatory blood volume is disclosed. A biological signal that emulates the arterial pulse wave is collected from a sensor. Three derived parameters are extrapolated from the biological signal. The first parameter, circulatory stress, reflects of the changes of the heart rate frequency. The second, circulatory blood volume, reflects the changes in the frequency strength of the heart rate frequency. The third, Pulse Volume Alteration (PVA) Index is a ratio of the sum of the strengths of the heart rate frequency harmonics to the strength of the heart rate frequency of the unprocessed biological signal. Each parameter is compared to a threshold value and assessed to determine an adequacy of circulatory blood volume and an appropriateness of the autoregulatory mechanisms used to maintain circulatory blood volume adequacy.

IPC 8 full level

A61B 8/14 (2006.01); A61B 5/00 (2006.01); A61B 5/026 (2006.01)

CPC (source: EP)

A61B 5/026 (2013.01); A61B 5/4848 (2013.01); A61B 5/4869 (2013.01); A61B 5/4884 (2013.01); A61B 5/7253 (2013.01); A61B 5/7264 (2013.01); A61B 5/7275 (2013.01); G16H 50/20 (2017.12)

Citation (search report)

  • [XI] US 6261235 B1 20010717 - AMANO KAZUHIKO [JP], et al
  • [XI] EP 0664102 A2 19950726 - SEIKO EPSON CORP [JP]
  • [A] EP 1905352 A1 20080402 - MASIMO CORP [US]
  • [A] WO 2004080300 A1 20040923 - UNIV YALE [US], et al
  • [A] EP 0947160 A1 19991006 - SEIKO EPSON CORP [JP]
  • [A] CHIN-MING HUANG ET AL: "Developing the Effective Method of Spectral Harmonic Energy Ratio to Analyze the Arterial Pulse Spectrum", EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM, vol. 17, no. 3, 1 January 2011 (2011-01-01), United States, pages 105 - 7, XP055309172, ISSN: 1741-427X, DOI: 10.1016/j.amjhyper.2007.03.016
  • [A] JEAN-PAUL ROUSTAN ET AL: "A New Index Derived from the Cerebrovascular Pressure Transmission and Correlated with Consciousness Recovery in Severely Head-Injured Intensive Care Patients", ANESTHESIA AND ANALGESIA., vol. 109, no. 6, 1 December 2009 (2009-12-01), US, pages 1883 - 1891, XP055309132, ISSN: 0003-2999, DOI: 10.1213/ANE.0b013e3181b1286b
  • [A] GAYASEN AMAN ET AL: "Effect of non-linearity in predicting doppler waveforms through a novel model", BIOMEDICAL ENGINEERING ONLINE, BIOMED CENTRAL LTD, LONDON, GB, vol. 2, no. 1, 18 September 2003 (2003-09-18), pages 16, XP021007710, ISSN: 1475-925X, DOI: 10.1186/1475-925X-2-16
  • [A] YUHKI A ET AL: "Development of a Suction Detection System for Axial Blood Pumps", ARTIFICIAL ORGANS, BLACKWELL SCIENTIFIC PUBLICATIONS, INC., BOSTON, US, vol. 23, no. 6, 1 June 1999 (1999-06-01), pages 532 - 537, XP009087841, ISSN: 0160-564X, DOI: 10.1046/J.1525-1594.1999.06397.X
  • See references of WO 2014143962A2

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2014143962 A2 20140918; WO 2014143962 A3 20150409; WO 2014143962 A4 20150528; AU 2014227994 A1 20150917; CA 2904682 A1 20140918; EP 2967502 A2 20160120; EP 2967502 A4 20161116

DOCDB simple family (application)

US 2014028167 W 20140314; AU 2014227994 A 20140314; CA 2904682 A 20140314; EP 14762395 A 20140314