Heart monitoring device, system and method
First Claim
1. An implantable heart monitoring device comprising:
- a control circuit;
a first sensor adapted to be disposed in a coronary sinus region of a heart to sense blood oxygen in said coronary sinus region, and supplying a first sensor signal representing a blood oxygen level to the control circuit;
at least one further sensor adapted to interact with the heart to sense activity of the heart, said at least one further sensor supplying a further sensor signal representing said activity to the control circuit; and
said control circuit, from said further sensor signal, identifying a first portion in a diastolic portion, and a second portion in a systolic portion, of a same heart cycle of the heart, and from said first sensor signal, determining a first value related to said blood oxygen level that occurs during said first portion and identifying said first value as having occurred during said first portion and determining a second value related to said blood oxygen level that occurs during said second portion and identifying said second value as having occurred during said second portion, and said control circuit emitting an output signal indicative of functioning of the heart dependent on a relation between said first value and said second value.
1 Assignment
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Accused Products
Abstract
In an implantable heart-monitoring device and system, and a heart-monitoring method, a control circuit is connected to one or more sensors, a first of which is positionable in the coronary sinus region of a heart and senses at least one blood constituent, and at least one other of the sensors supplying a signal to the control circuit indicative of the activity of the heart. In response to signals from the first sensor and with information about the activity of the heart from the other sensor, the control circuit determines a first value of the blood constituent during a first portion of a heart cycle, and determines a second value of the blood constituent during a second portion of the heart cycle.
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Citations
33 Claims
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1. An implantable heart monitoring device comprising:
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a control circuit; a first sensor adapted to be disposed in a coronary sinus region of a heart to sense blood oxygen in said coronary sinus region, and supplying a first sensor signal representing a blood oxygen level to the control circuit; at least one further sensor adapted to interact with the heart to sense activity of the heart, said at least one further sensor supplying a further sensor signal representing said activity to the control circuit; and said control circuit, from said further sensor signal, identifying a first portion in a diastolic portion, and a second portion in a systolic portion, of a same heart cycle of the heart, and from said first sensor signal, determining a first value related to said blood oxygen level that occurs during said first portion and identifying said first value as having occurred during said first portion and determining a second value related to said blood oxygen level that occurs during said second portion and identifying said second value as having occurred during said second portion, and said control circuit emitting an output signal indicative of functioning of the heart dependent on a relation between said first value and said second value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable heart monitoring system comprising:
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a control circuit; a lead arrangement connected to said control circuit and configured for implantation in a subject; a first sensor carried by said lead arrangement and adapted to be disposed in a coronary sinus region of a heart to sense blood oxygen in said coronary sinus region, and supplying a first sensor signal representing a blood oxygen level to the control circuit; at least one further sensor carried by said lead arrangement and adapted to interact with the heart to sense activity of the heart, said at least one further sensor supplying a further sensor signal representing said activity to the control circuit; and said control circuit, from said further sensor signal, identifying a first portion in a diastolic portion, and a second portion in a systolic portion, of a same heart cycle of the heart, and from said first sensor signal, determining a first value related to said blood oxygen level that occurs during said first portion and identifying said first value as having occurred during said first portion and determining a second value related to said blood oxygen level that occurs during said second portion and identifying said second value as having occurred during said second portion, and said control circuit emitting an output signal indicative of functioning of the heart dependent on a relation between said first value and said second value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A heart monitoring method comprising the steps of:
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disposing a first sensor in a coronary sinus region of a heart and sensing at least blood oxygen in said coronary sinus region with said first sensor, and generating a first sensor signal representing blood oxygen level; disposing at least one further sensor adapted to interact with the heart and sensing activity of the heart with said at least one further sensor, and generating a further sensor signal representing said activity; and from said further sensor signal, electronically identifying a first portion in a diastolic portion, and a second portion in a systolic portion of a same heart cycle of the heart, and from said first sensor signal, electronically determining a first value related to said blood oxygen level that occurs during said first portion and identifying said first value as having occurred during said first portion and a second value related to said blood oxygen level that occurs during said second portion and identifying said second value as having occurred during said second portion, and emitting an output signal indicative of functioning of the heart dependent on a relation between said first value and said second value. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification