SENSING CARDIAC CONTRACTILE FUNCTION
First Claim
1. A cardiac apparatus comprising:
- a first lead including an inner lumen, wherein the first lead includes a first conductor configured to sense cardiac electrical activity;
a second lead including a second conductor configured to sense cardiac electrical activity, wherein the first lead is disposed within the second lead; and
a sensing device configured to sense cardiac wall movement, the sensing device disposed within the inner lumen of the first lead.
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Abstract
Systems and methods for detecting and measuring cardiac contractile function of a heart using an acceleration sensor unit inserted within the heart, such as within a vein of the cardiac wall are disclosed. The systems and methods involve detecting the occurrence of electrical events within the patient'"'"'s heart by inserting and positioning an implantable lead having an electrode near a cardiac wall as well as detecting mechanical events within the patient'"'"'s heart by then inserting and positioning a cardiac motion sensor unit through the inner lumen of the implantable lead. Furthermore, the systems and methods do not require dedicated leads and may be used with preexisting implantable leads.
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Citations
20 Claims
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1. A cardiac apparatus comprising:
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a first lead including an inner lumen, wherein the first lead includes a first conductor configured to sense cardiac electrical activity; a second lead including a second conductor configured to sense cardiac electrical activity, wherein the first lead is disposed within the second lead; and a sensing device configured to sense cardiac wall movement, the sensing device disposed within the inner lumen of the first lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cardiac system comprising:
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a first lead including an inner lumen, wherein the first lead includes a first conductor configured to sense cardiac electrical activity; a second lead including a second conductor configured to sense cardiac electrical activity, wherein the first lead is disposed within the second lead; and a sensing device configured to sense cardiac wall movement, the sensing device disposed within the inner lumen of the first lead, the sensing device comprising; a cardiac motion sensor configured to generate a signal indicative of cardiac wall movement; and a connector device configured to fix the sensing device relative to the inner lumen. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification