Implantable medical device system with sensor for hemodynamic stability and method of use
First Claim
1. An implantable medical device system for regulating a heart of a patient, the system comprising:
- a first sensor capable of sensing activity of a heart atrium;
a second sensor capable of sensing activity of a heart ventricle;
a processor coupled to the first and second sensors, the processor capable of;
determining an atrial cycle time and a ventricular cycle time based upon signals from the first and second sensors, generating a hemodynamic baseline ratio based upon an atrial cycle time and a ventricular cycle time of a hemodynamic heartbeat, generating an active ratio based upon an atrial cycle time and a ventricular cycle time of an active heart beat, comparing the hemodynamic baseline ratio and the active ratio, determining a corrective action based upon the comparison of the hemodynamic baseline ratio and the active ratio; and
a medical device capable of delivering a therapy to the patient and coupled to the processor;
wherein the processor is configured to prompt desired activation of the medical device based upon the determined corrective action.
1 Assignment
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Accused Products
Abstract
An implantable medical device system for regulating a heart of a patient. The system includes a first sensor, a second sensor, a processor, and a medical device. The first sensor is capable of sensing activity of a heart atrium. The second sensor is capable of sensing activity of a heart ventricle. The processor is coupled to the first and second sensors and is capable of determining an atrial cycle time and a ventricular cycle time based upon signals from the first and second sensors. The processor is further capable of generating a hemodynamic baseline ratio based upon an atrial cycle time and a ventricular cycle time of a hemodynamic heartbeat, as well as an active ratio based upon an atrial cycle time and a ventricular cycle time of an active heartbeat. The processor is further capable of comparing the hemodynamic baseline ratio and the active ratio, and determining a corrective action based upon this comparison. The medical device is capable of supplying a therapy to the heart and is coupled to the processor. With this configuration, the processor is configured to control desired operation of the medical device based upon the determined corrective action.
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Citations
70 Claims
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1. An implantable medical device system for regulating a heart of a patient, the system comprising:
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a first sensor capable of sensing activity of a heart atrium;
a second sensor capable of sensing activity of a heart ventricle;
a processor coupled to the first and second sensors, the processor capable of;
determining an atrial cycle time and a ventricular cycle time based upon signals from the first and second sensors, generating a hemodynamic baseline ratio based upon an atrial cycle time and a ventricular cycle time of a hemodynamic heartbeat, generating an active ratio based upon an atrial cycle time and a ventricular cycle time of an active heart beat, comparing the hemodynamic baseline ratio and the active ratio, determining a corrective action based upon the comparison of the hemodynamic baseline ratio and the active ratio; and
a medical device capable of delivering a therapy to the patient and coupled to the processor;
wherein the processor is configured to prompt desired activation of the medical device based upon the determined corrective action. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for applying therapy with an implantable medical device to a heart of a patient, the method comprising:
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sensing an atrial cycle time for a first heartbeat;
sensing a ventricular cycle time for the first heartbeat;
generating an active ratio for the first heartbeat based upon the sensed atrial cycle time and the sensed ventricular cycle time;
comparing the active ration to a hemodynamic baseline ratio;
determining a corrective action based upon the comparison; and
applying a therapy to the heart to effectuate the determined corrective action. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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45. An implantable medical device system for regulating a heart of a patient, the system comprising:
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first sensing means for sensing an atrial cycle time of a heartbeat;
second sensing means for sensing a ventricular cycle time of a heartbeat;
processing means for generating an active ratio based upon the sensed atrial cycle time and the sensed ventricular cycle time of an active heartbeat;
comparing means for comparing the active ratio to a hemodynamic baseline ratio;
analyzing means for determining a corrective action based upon a comparison of the active ratio and the hemodynamic baseline ratio; and
heart therapy means for delivering a therapy to the patient based upon the determined corrective action.
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63. A system for evaluating functioning of a heart of a patient in conjunction with an implantable medical device, the system comprising:
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a first sensor capable of sensing activity of a heart atrium;
a second sensor capable of sensing activity of a heart ventricle; and
a processor coupled to the first and second sensors, the processor capable of;
determining an atrial cycle time and a ventricular cycle time for a heartbeat based upon signals from the first and second sensors, generating an active ratio based upon atrial cycle time and ventricular cycle time of an active heartbeat, comparing the active ratio to a hemodynamic baseline ratio, evaluating functioning of the heart based upon the comparison. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70)
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Specification