Device for determining myocardial function and corresponding procedure
First Claim
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1. A method of determining myocardial function of a patient'"'"'s heart, comprising:
- (a) sensing an ECG of the patient;
(b) generating a signal representative of the ECG;
(c) sensing a natural heart acceleration of the patient;
(d) generating a signal representative of the natural heart acceleration; and
(e) selecting at least one time segment of the natural heart acceleration signal based on a predetermined portion of the ECG signal.
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Abstract
The device senses Natural Heart Acceleration (NHA), isolating at least one segment (t) thereof corresponding to an isovolumetric phase, such as isovolumetric contraction (P1, P2) and/or isovolumetric relaxation (P3, P4). Preferentially, the action of isolation of the aforesaid segment is made starting from the electrocardiogram (ECG) signal. Among other things, the device may be used to carry out pacing functions (pacemaker, defibrillator, pacer cardioverter defibrillator) and/or to pick up, possibly by telemetry, data on the myocardial function and/or also to control a system of drug administration.
114 Citations
54 Claims
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1. A method of determining myocardial function of a patient'"'"'s heart, comprising:
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(a) sensing an ECG of the patient; (b) generating a signal representative of the ECG; (c) sensing a natural heart acceleration of the patient; (d) generating a signal representative of the natural heart acceleration; and (e) selecting at least one time segment of the natural heart acceleration signal based on a predetermined portion of the ECG signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for determining the myocardial function of a patient'"'"'s heart, comprising:
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(a) a natural heart acceleration sensor adapted to be coupled with the patient'"'"'s heart; (b) an ECG sensor adapted to be coupled with the patient'"'"'s heart; and (c) a processor operably connected to the natural heart acceleration sensor and the ECG sensor; wherein, the natural heart acceleration sensor measures the natural heart acceleration of the patient'"'"'s heart, the ECG sensor measures the ECG of the patient'"'"'s heart, the processor generates a first signal based on the measured natural heart acceleration, generates a second signal based on the measured ECG, and selects a time segment of the natural heart acceleration signal based on a predetermined portion of the ECG signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of providing therapy to a patient'"'"'s heart comprising:
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(a) sensing a natural heart acceleration of the patient; (b) generating a signal representative of the natural heart acceleration; (c) selecting at least one time segment of the natural heart acceleration signal; and (d) delivering therapy to the heart of the patient based on the selected time segment of the natural heart acceleration signal. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An apparatus for providing therapy to a patient'"'"'s heart comprising:
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(a) a natural heart acceleration sensor; (b) means for generating a signal representative of the natural heart acceleration; (c) means for selecting at least one time segment of the natural heart acceleration signal; and (d) means for delivering therapy to the heart of the patient based on the selected time segment of the natural heart acceleration signal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification