Detection of apex motion for monitoring cardiac dysfunction
First Claim
1. A system for monitoring cardiac function in a human patient, the system comprising:
- (a) an intracorporal motion sensor positioned at the apex of the heart, which is in operable connection with (b) a motion analysis element comprising analog-to-digital converter circuitry;
central processing unit for processing signals from said motion sensor;
memory for storing at least one baseline motion parameter; and
an element for transmitting information to an alarm system.
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Accused Products
Abstract
Methods and devices for detection and monitoring of cardiac dysfunction and means for deployment of same are disclosed, including implanted sensor devices and methods for sensing one or more mechanical, electrical, hemodynamic, or chemical properties of cardiac tissue or blood, with apparatus and methods for analyzing or interpreting signals generated by the sensing elements, producing a physiologic or environmental effect or output as a result of the analysis, and methods and devices for the delivery of such sensors into the body. A preferred embodiment is integrated into a subcutaneously implantable medical device such as a pacemaker or defibrillator, and includes one or more electrical leads placed into the cardiac veins via the coronary sinus with motion and/or electrogram sensors at their ends. Another preferred embodiment is an implanted device residing entirely within the right-ventricular apex, with apparatus for communication with an external device for signal analysis, display, and patient notification.
204 Citations
41 Claims
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1. A system for monitoring cardiac function in a human patient, the system comprising:
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(a) an intracorporal motion sensor positioned at the apex of the heart, which is in operable connection with (b) a motion analysis element comprising analog-to-digital converter circuitry;
central processing unit for processing signals from said motion sensor;
memory for storing at least one baseline motion parameter; and
an element for transmitting information to an alarm system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for monitoring of cardiac function in a patient, the method comprising:
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sensing the path that cardiac ventricular apex traverses over time with a motion sensor;
interpreting signals generated by said sensors; and
producing an output as a result of said interpreting. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification