NEWCASTLE-UPON-TYNE HOSPITALS NHS FOUNDATION TRUST
发明人:
ALLEN, John,BEALE, Thomas
申请号：
GBGB2017/051131
公开号：
WO2017/182830A1
申请日:
2017.04.24
申请国别(地区):
WO
年份:
2017
代理人:
摘要：
An apparatus for use in the assessment of peripheral arterial disease (PAD) in a patient, the apparatus comprising: at least one pair of photoplethysmographic (PPG) pulse sensors, one PPG sensor of the at least one pair attachable to a left hand side body extremity and the other of the pair attachable to a corresponding right hand side body extremity a memory storing normal range values derived from measurements made on individuals without significant PAD and a processor having at least two inputs and at least one output, the processor configured to operate an algorithm, the algorithm performing the following steps: i. acquire pulse signals from the PPG sensors over a predetermined number of heart beats, wherein the pulse associated with each heart beat has a first pulse foot, a second pulse foot and a first dominant peak ii. filter the signals to remove unwanted high and low frequency noise iii. normalise each filtered pulse signal in width over a number of equally spaced time intervals between consecutive pulse feet iv. normalise each filtered pulse signal in height between lower and upper thresholds from the first pulse foot to the first dominant peak v. calculate a value related to the acquired pulse signals for each equally spaced time interval vi. for each equally spaced time interval, comparing the value calculated in step v for a patient, with the same value, or a normal range thereof, from the memory and generating an output representing the comparison vii. calculating a shape distortion index representing the output of step vi.Linvention porte sur un appareil destiné à être utilisé dans lévaluation de la maladie artérielle périphérique (PAD) chez un patient, lappareil comprenant : au moins une paire de capteurs de pouls photopléthysmographiques (PPG), un capteur PPG de la ou des paires pouvant être fixé à une extrémité du corps du côté de la main gauche et lautre capteur de la paire pouvant être fixé à une extrémité du corps du côté de la main droite corre
