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1. (WO2019027836) SYSTEMS FOR ASSESSING FRACTIONAL FLOW RESERVE
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Pub. No.: WO/2019/027836 International Application No.: PCT/US2018/044153
Publication Date: 07.02.2019 International Filing Date: 27.07.2018
IPC:
A61B 5/02 (2006.01) ,A61B 5/0215 (2006.01) ,A61B 5/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
02
Measuring 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
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
02
Measuring 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
021
Measuring pressure in heart or blood vessels
0215
by means inserted into the body
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
Applicants:
BOSTON SCIENTIFIC SCIMED, INC. [US/US]; ONE SCIMED PLACE MAPLE GROVE, Minnesota 55311, US
Inventors:
LI, Wenguang; US
Agent:
WICKHEM, J. Scot; US
Priority Data:
62/541,06903.08.2017US
Title (EN) SYSTEMS FOR ASSESSING FRACTIONAL FLOW RESERVE
(FR) SYSTÈMES D'ÉVALUATION DE RÉSERVE DE FLUX FRACTIONNAIRE
Abstract:
(EN) Systems for determining fractional flow reserve are disclosed. An example system may include a pressure sensing guidewire for measuring a first pressure, a second pressure sensing medical device for measuring a second pressure, and a processor coupled to the pressure sensing guidewire and coupled to the second pressure sensing medical device. The processor may be designed to generate a plot of the magnitude of the second pressure over time, identify one or more time intervals of the plot that have a slope less than zero, determine a mean of the second pressure, and calculate the ratio of the first pressure to the second pressure when (a) the second pressure is less than or equal to the mean of the second pressure and (b) during the one or more time intervals when the slope of the plot is less than zero.
(FR) L'invention concerne des systèmes de détermination de réserve de flux fractionnaire. Un système donné à titre d'exemple peut comprendre un fil-guide de détection de pression pour mesurer une première pression, un second dispositif médical de détection de pression pour mesurer une seconde pression, et un processeur couplé au fil-guide de détection de pression et couplé au second dispositif médical de détection de pression. Le processeur peut être conçu pour générer un tracé de l'amplitude de la seconde pression au fil du temps, identifier un ou plusieurs intervalles de temps du tracé ayant une pente inférieure à zéro, déterminer une moyenne de la seconde pression, et calculer le rapport de la première pression à la seconde pression lorsque (a) la deuxième pression est inférieure ou égale à la moyenne de la seconde pression et (b) pendant le ou les intervalles de temps lorsque la pente du tracé est inférieure à zéro.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)