Produits et services

Medical instrument for cardiovascular diagnostics

Abrégé

Electrical ventricular depolarization may be represented by its vectorcardiographic QRS loop, which exists in 3D space. By recognizing that the QRS loop is often a closed trajectory on a plane (2D), it is possible to change (e.g., by rotation, projection, etc.) the single-channel QRS into a different view angle along that plane to provide a viewpoint more favorable for morphologic interpretation. Any monophasic or biphasic single-channel QRS (time series) waveform can be decomposed into the form x(α,t) = sin(αt) u(t), with t spanning [0,2π], where u(t) is an unchanging intrinsic component that is generally upright and monophasic, and where sin(αt) is a changeable component of the waveform. This way, x(α,t) may be changed by replacing a parameter of the original changeable component sin(αt) with a second parameter associated with a target view of the waveform, such as the upright monophasic sin(0.5t). Meanwhile the intrinsic component remains unchanged during this change.

Classes IPC  ?

• A61B 5/366 - Détection de complexes QRS anormaux, p. ex. élargissement
• A61B 5/28 - Électrodes bioélectriques à cet effet spécialement adaptées à des utilisations particulières pour l’électrocardiographie [ECG]

Abrégé

Electrical ventricular depolarization may be represented by its vectorcardiographic QRS loop, which exists in 3D space. By recognizing that the QRS loop is often a closed trajectory on a plane (2D), it is possible to change (e.g., by rotation, projection, etc.) the single-channel QRS into a different view angle along that plane to provide a viewpoint more favorable for morphologic interpretation. Any monophasic or biphasic single-channel QRS (time series) waveform can be decomposed into the form x(α,t)=sin(αt)u(t), with t spanning [0,2π], where u(t) is an unchanging intrinsic component that is generally upright and monophasic, and where sin(αt) is a changeable component of the waveform. This way, x(α,t) may be changed by replacing a parameter of the original changeable component sin(αt) with a second parameter associated with a target view of the waveform, such as the upright monophasic sin(0.5t). Meanwhile the intrinsic component remains unchanged during this change.

Classes IPC  ?

• A61B 5/347 - Détection de la répartition de fréquence dans les signaux
• A61B 5/358 - Détection des segments ST
• A61B 5/366 - Détection de complexes QRS anormaux, p. ex. élargissement

Produits et services

Medical instrument for cardiovascular diagnostics

Produits et services

Medical instrument for cardiovascular diagnostics

Produits et services

Heartbeat measuring apparatus; Medical instrument for cardiovascular diagnostics

Produits et services

Heartbeat measuring apparatus; Medical instrument for cardiovascular diagnostics

Produits et services

Heartbeat measuring apparatus; Medical instrument for cardiovascular diagnostics