Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007032665 - METHOD AND DEVICE FOR DETERMINING FLOW IN A BLOOD VESSEL

Publication Number WO/2007/032665
Publication Date 22.03.2007
International Application No. PCT/NL2006/000452
International Filing Date 12.09.2006
IPC
A61B 5/027 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
02Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
026Measuring blood flow
0265using electromagnetic means, e.g. electromagnetic flow meter
027using catheters
A61B 5/053 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
05Measuring for diagnosis by means of electric currents or magnetic fields
053Measuring electrical impedance or conductance of a portion of the body
CPC
A61B 5/027
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
026Measuring blood flow
0265using electromagnetic means, e.g. electromagnetic flowmeter
027using catheters
A61B 5/0295
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
026Measuring blood flow
0295using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
A61B 5/0535
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
053Measuring electrical impedance or conductance of a portion of the body
0535Impedance plethysmography
Applicants
  • MARTIL INSTRUMENTS B.V. [NL]/[NL] (AllExceptUS)
  • POP, Gheorghe, Aurel, Marie [NL]/[NL] (UsOnly)
Inventors
  • POP, Gheorghe, Aurel, Marie
Agents
  • 'T JONG, Bastiaan, Jacobus
Priority Data
102996915.09.2005NL
103227203.08.2006NL
Publication Language English (EN)
Filing Language Dutch (NL)
Designated States
Title
(EN) METHOD AND DEVICE FOR DETERMINING FLOW IN A BLOOD VESSEL
(FR) PROCEDE ET DISPOSITIF PERMETTANT DE DETERMINER L'ECOULEMENT DANS UN VAISSEAU SANGUIN
Abstract
(EN)
The invention relates to a method and device for determining the flow in a blood vessel, comprising of determining the relation between the shear rate and the impedance of flowing blood, measuring the impedance in the blood in a cross-section of the blood vessel, determining the shear rate from this relation and the measured impedance, determining the size of the cross-section of the blood vessel, selecting a theoretical relative flow distribution over the blood vessel cross-section, determining the average flow speed on the basis of the average shear rate and the relative flow distribution, and determining the flow volume from the determined average flow speed and the cross-section.
(FR)
L'invention concerne un procédé et un dispositif permettant de déterminer l'écoulement dans un vaisseau sanguin. Le procédé comporte les étapes consistant à: déterminer la relation entre la vitesse de cisaillement et l'impédance de l'écoulement sanguin, mesurer l'impédance dans le sang en une section transversale du vaisseau sanguin, déterminer la vitesse de cisaillement à partir de cette relation et de l'impédance mesurée, déterminer la taille de la section transversale du vaisseau sanguin, sélectionner une répartition d'écoulement relative théorique par rapport à la section transversale du vaisseau sanguin, déterminer la vitesse moyenne d'écoulement en fonction de la vitesse moyenne de cisaillement et de la répartition d'écoulement relative, et déterminer le volume d'écoulement à partir de la vitesse moyenne d'écoulement et de la section transversale.
Latest bibliographic data on file with the International Bureau