Implantable leads incorporating cardiac wall acceleration sensors and method of fabrication
First Claim
1. An implantable lead for use with an implantable cardiac stimulation device, said implantable lead comprising:
- cardiac wall acceleration sensing means for providing a signal indicative of acceleration of a cardiac wall;
endocardial carrier means for transvenously positioning said cardiac wall acceleration sensing means with respect to said cardiac wall so that said cardiac wall acceleration sensing means is responsive to said acceleration of said cardiac wall, said endocardial carrier means having a substantially elongated lead body with a distal end for contacting said cardiac wall and a proximal end;
conductor means, within said lead body, for conducting said signal indicative of acceleration of a cardiac wall from said cardiac wall acceleration sensing means to said implantable cardiac stimulation device; and
connector means for electrically interfacing said conductor means at said proximal end of said lead body to said implantable cardiac stimulation device.
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Accused Products
Abstract
Implantable leads incorporating accelerometer-based cardiac wall motion sensors, and a method of fabricating such leads, are provided. The cardiac wall motion sensors transduce accelerations of cardiac tissue to provide electrical signals indicative of cardiac wall motion to an implantable cardiac stimulating device. The implantable cardiac stimulating device may use the electrical signals indicative of cardiac wall motion to detect and discriminate among potentially malignant cardiac arrhythmias. In response to a detected abnormal cardiac rhythm, the cardiac stimulating device may deliver therapeutic electrical stimulation to selected regions of cardiac tissue.
291 Citations
30 Claims
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1. An implantable lead for use with an implantable cardiac stimulation device, said implantable lead comprising:
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cardiac wall acceleration sensing means for providing a signal indicative of acceleration of a cardiac wall; endocardial carrier means for transvenously positioning said cardiac wall acceleration sensing means with respect to said cardiac wall so that said cardiac wall acceleration sensing means is responsive to said acceleration of said cardiac wall, said endocardial carrier means having a substantially elongated lead body with a distal end for contacting said cardiac wall and a proximal end; conductor means, within said lead body, for conducting said signal indicative of acceleration of a cardiac wall from said cardiac wall acceleration sensing means to said implantable cardiac stimulation device; and connector means for electrically interfacing said conductor means at said proximal end of said lead body to said implantable cardiac stimulation device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of fabricating an implantable lead incorporating a cardiac wall acceleration sensor that provides a signal indicative of cardiac wall acceleration, said method comprising the steps of:
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providing an endocardial lead body for transvenous attachment to a cardiac wall; disposing said cardiac wall acceleration sensor within a distal end of said endocardial lead body so that said cardiac wall acceleration sensor responds to acceleration of said cardiac wall and provides said signal indicative of cardiac wall acceleration; attaching a connector to said endocardial lead body to permit said endocardial lead body to be connected to an implantable cardiac stimulation device; and electrically connecting said cardiac wall acceleration sensor to said connector. - View Dependent Claims (19, 20)
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21. An implantable endocardial lead for use with an implantable cardiac stimulation device, said implantable lead comprising:
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acceleration sensing means for providing acceleration signals; an elongated lead body having a distal end for contacting the cardiac muscle tissue and a proximal end, said lead body having a connector at said proximal end for interfacing with said implantable stimulation device, said lead body further having said acceleration sensing means disposed within said distal end; and conductor means, within said lead body, for conducting said acceleration signal from said acceleration sensing means to said implantable cardiac stimulation device; whereby when said elongated lead body is transvenously implanted said acceleration sensing means is positioned so as to be responsive to accelerations of the cardiac muscle tissue corresponding to cardiac mechanical activity. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification