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1. EP3518769 - BLOOD FLOW DETERMINATION APPARATUS

Office
European Patent Office
Application Number 17777196
Application Date 18.09.2017
Publication Number 3518769
Publication Date 07.08.2019
Publication Kind B1
IPC
A61B 8/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
06Measuring blood flow
A61B 8/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
A61B 8/12
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
12in body cavities or body tracts, e.g. by using catheters
CPC
A61B 8/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
06Measuring blood flow
A61B 8/12
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
12in body cavities or body tracts, e.g. by using catheters
A61B 8/445
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
44Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
4444related to the probe
445Details of catheter construction
A61B 5/026
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
Applicants KONINKLIJKE PHILIPS NV
Inventors HAASE CHRISTIAN
GRASS MICHAEL
Designated States
Priority Data 16191056 28.09.2016 EP
Title
(DE) BLUTFLUSSBESTIMMUNGSVORRICHTUNG
(EN) BLOOD FLOW DETERMINATION APPARATUS
(FR) APPAREIL DE DÉTERMINATION DE FLUX SANGUIN
Abstract
(EN) The invention relates to a blood flow determination apparatus (5) comprising a speckle density determination unit (7) for determining a speckle density value being indicative of a level of a speckle density in an ultrasound image of an inner lumen of a blood vessel, which has been generated at an imaging location being behind an introduction location at which a fluid has been introduced into the blood vessel (20) with a known volumetric fluid flow rate. A blood flow rate determination unit (8) determines a blood flow value being indicative of a volumetric blood flow rate based on the determined speckle density value and the volumetric fluid flow rate. This allows determining the intravascular blood flow with an improved accuracy.
(FR) L'invention concerne un appareil de détermination de débit sanguin (5) comprenant une unité de détermination de densité de granularité (7) permettant de déterminer une valeur de densité de granularité indiquant un niveau d'une densité de granularité dans une image ultrasonore d'une lumière interne d'un vaisseau sanguin, qui a été générée au niveau d'un emplacement d'imagerie se trouvant derrière un emplacement d'introduction au niveau duquel un fluide a été introduit dans le vaisseau sanguin (20) avec un débit de fluide volumétrique connu. Une unité de détermination de débit sanguin (8) détermine une valeur de débit sanguin indiquant un débit sanguin volumétrique sur la base de la valeur de densité de granularité déterminée et du débit de fluide volumétrique. Ceci permet de déterminer le débit sanguin intravasculaire avec une précision améliorée.