Medical device
First Claim
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1. A device for assessing the degree of heart failure in a patient comprising:
- means for sensing the trans thoracic impedance;
means for sensing the posture of the patient; and
means for correlating the sensed trans thoracic impedance with the sensed posture to assess the degree of heart failure.
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Abstract
A device and method useful in the diagnosis and treatment of congestive heart failure. Specifically the present invention senses the trans-thoracic impedance as well as patient posture. By correlating changes in posture with trans-thoracic impedance changes, the present invention is able to diagnose and assess the degree of congestive heart failure. The present invention is described in the context of an implantable pulse generator system, but it may also be practiced in conjunction with various types of implantable devices.
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19 Claims
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1. A device for assessing the degree of heart failure in a patient comprising:
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means for sensing the trans thoracic impedance; means for sensing the posture of the patient; and means for correlating the sensed trans thoracic impedance with the sensed posture to assess the degree of heart failure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for assessing the degree of heart failure comprising:
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means for sensing the trans thoracic impedance over a predetermined period of time; means for sensing the posture of the patient; and means for correlating the sensed trans thoracic impedance over a predetermined period of time with the sensed posture to assess the degree of heart failure. - View Dependent Claims (12)
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13. A method for assessing the degree of heart failure in a patient sing the steps of:
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sensing the trans thoracic impedance; sensing the posture of the patient; and correlating the sensed trans thoracic impedance with the sensed posture to assess the degree of heart failure. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification