Automatic ankle brachial pressure index system

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/022 (2006.01)

Patent

CA 2643047

An ABPI measurement system (1) includes two cuffs (10) for each ankle and two cuffs (10) for each arm of a patient. Each cuff (10) has chambers (11, 12). The four cuffs are applied to each limb (or finger or toe), each chamber (11) is inflated simultaneously to a pressure until a Pneumo Arterial Plethysmography (PAPG) signal related to the arterial flow in the limb is detected at the chambers (11). The chambers (12) are then simultaneously inflated until the PAPG signals are extinguished in each limb, the inflation of chambers (12) continuing for 10mmHg to 20mmHg above that pressure. The chambers (12) are then deflated and the pressure at which the PAPG signal returns in the first chamber (11) is recorded for each limb and this value of the pressure is used to calculate the ABPI. The ABPI is displayed or sent to a remote site.

L'invention concerne un système de mesure d'IPCB (1) comprenant deux brassards compressifs (10) pour chaque cheville et deux brassards compressifs (10) pour chaque bras d'un patient. Chaque brassard compressif (10) présente des chambres (11, 12). Les quatre brassards compressifs sont appliqués sur chaque membre (doigt ou orteil), chaque chambre (11) est gonflée simultanément à une certaine pression jusqu'à qu'un signal pléthysmographique pneumo-artériel (PAPG) associé au flux artériel soit détecté au niveau des chambres (11). Les chambres (12) sont ensuite gonflées simultanément jusqu'à ce que les signaux PAPG soient éteints au niveau de chaque membre, le gonflage des chambres (12) continuant pour 10mmHg à 20mmHg au-dessus de ladite pression. Les chambres (12) sont ensuite dégonflées et la pression à laquelle le signal PAPG retourne vers la première chambre (11) est enregistrée pour chaque membre et ladite valeur de pression est utilisée pour calculer l'IPCB. L'IPCB est affiché ou envoyé vers un site éloigné.

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