TRANSMUSCULAR LEFT VENTRICULAR CARDIAC STIMULATION LEADS AND RELATED SYSTEMS AND METHODS
First Claim
1. A cardiac stimulation system, comprising:
- an RV lead body with a proximal end portion and a distal end portion terminating in a distal tip;
a tissue fixation member at a first location along the distal end portion and proximally of the distal tip;
a left ventricle (LV) stimulator at a second location along the distal end portion;
wherein the second location is distally adjacent the first location such that the tissue fixation member when affixed to tissue is adapted to secure the cardiac stimulator at a fixed position within a ventricular wall;
wherein the tissue fixation member comprises a ridged outer surface at the first location along the distal end portion;
wherein the (LV) stimulator is configured to be positioned transmuscularly from a right ventricle (RV) chamber, across an interventricular septum, and to a location along a left side of the septum, and is configured to be actuated so as to couple energy to tissue so as to stimulate principally the LV conduction system from the location; and
wherein the LV stimulator is adapted to be coupled to an actuator at a remote location from the fixed position and to be actuated by the actuator in a stimulation mode of operation to stimulate cardiac tissue at the fixed position.
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Accused Products
Abstract
A cardiac stimulation system and method delivers a left ventricle stimulator from a right ventricle lead system in the right ventricle chamber, into a right side of an interventricular septum at a first location, and transmuscularly from the first location to a second location along the left side of the septum. The left ventricle stimulator is affixed at the second location for transmuscular stimulation of the left ventricle conduction system. A biventricular stimulation system further includes a right ventricle stimulator also delivered by the right ventricle lead system to the first location along the right side of the septum for right ventricular stimulation. An energy source is coupled to the transmuscular stimulation system, i.e., a pacemaker, and/or defibrillator, or to enhance contractility, and may be coupled directly or via “leadless” system(s). Various highly beneficial particular arrangements of stimulators and leads are further described.
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Citations
52 Claims
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1. A cardiac stimulation system, comprising:
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an RV lead body with a proximal end portion and a distal end portion terminating in a distal tip; a tissue fixation member at a first location along the distal end portion and proximally of the distal tip; a left ventricle (LV) stimulator at a second location along the distal end portion; wherein the second location is distally adjacent the first location such that the tissue fixation member when affixed to tissue is adapted to secure the cardiac stimulator at a fixed position within a ventricular wall; wherein the tissue fixation member comprises a ridged outer surface at the first location along the distal end portion; wherein the (LV) stimulator is configured to be positioned transmuscularly from a right ventricle (RV) chamber, across an interventricular septum, and to a location along a left side of the septum, and is configured to be actuated so as to couple energy to tissue so as to stimulate principally the LV conduction system from the location; and wherein the LV stimulator is adapted to be coupled to an actuator at a remote location from the fixed position and to be actuated by the actuator in a stimulation mode of operation to stimulate cardiac tissue at the fixed position. - View Dependent Claims (47, 48, 49, 50, 51, 52)
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2-46. -46. (canceled)
Specification