Systems and methods for wireless endocardial stimulation of the left ventricular septal wall

A stimulation assembly implantable within a heart of a patient, comprising:

• a body;
• circuitry positioned at least partially within the body and configured to receive acoustic energy from an external source and to convert the acoustic energy to electrical energy;
• an electrode configured to receive the electrical energy;
• and
• a plurality of tines extending from the body, wherein the tines are configured to at least partially move from a compressed delivery position to an expanded deployed position, and wherein
• in the compressed delivery position, the tines extend generally parallel to one another,
• in the expanded deployed position, the tines are configured to engage a septal wall of the heart to secure the electrode in contact with tissue of the septal wall, and
• the electrode is further configured to deliver the electrical energy to the tissue of the septal wall.

A stimulation assembly implantable within a heart of a patient, comprising:

• a body having a distal surface configured to be positioned adjacent a septal wall of the heart within a first ventricle of the heart;
• circuitry positioned at least partially within the body and configured to receive acoustic energy from an external source and to convert the acoustic energy to electrical energy;
• an electrode configured to receive the electrical energy;
• an elongate member extending from the distal surface and configured to extend through the septal wall from the first ventricle to a second ventricle of the heart;
• and
• an anchor member configured to be secured to needle within the second ventricle of the heart to secure the electrode in contact with tissue of the septal wall, wherein the electrode is further configured to deliver the electrical energy to the tissue of the septal wall.

A method of implanting a stimulation assembly at a target site of a septal wall of a heart of a patient, wherein the stimulation assembly includes an elongate member and an electrode, and wherein the septal wall separates a first ventricle of the heart from a second ventricle of the heart, the method comprising:

• threading a suture through the septal wall proximate the target site from the first ventricle to the second ventricle;
• attaching a first end portion of the suture to the stimulation assembly;
• pulling the suture to pull the stimulation assembly into the first ventricle and cause the elongate member to extend through the septal wall from the first ventricle to the second ventricle;
• securing an anchor member to the elongate member within the second ventricle to secure the electrode in contact with tissue of the septal wall;
• and
• delivering electrical energy to the tissue of the septal wall via the electrode.