Single-chamber leadless intra-cardiac medical device with dual-chamber functionality and shaped stabilization intra-cardiac extension
A leadless intra-cardiac medical device (LIMD) configured to be implanted entirely within a heart of a patient includes a housing configured to be securely attached to an interior wall portion of a chamber of the heart, and a stabilizing intra-cardiac (IC) device extension connected to the housing. The stabilizing IC device extension may include a stabilizer arm, and/or an appendage arm, or an elongated body or a loop member configured to be passively secured within the heart.
1. A leadless intra-cardiac medical device configured to be implanted entirely within a heart of a patient, the device comprising:
a housing configured to be securely attached to an interior wall portion of a chamber of the heart, the housing having a proximal end and a distal end, and the housing hermetically enclosing electronics, a controller, and a battery;
a securing device extending from the proximal end of the housing, the securing device configured to secure the housing to cardiac tissue;
an appendage arm extending from the distal end of the housing, the appendage arm having a proximal end directly connected to the distal end of the housing, and the appendage arm having a distal end upon which an electrode is disposed;
a stabilizer arm extending from the distal end of the housing, the stabilizer arm having a proximal end directly connected to the distal end of the housing, and the stabilizer arm having a distal end upon which a pusher cup is disposed.
2. The device of claim 1 , wherein the appendage arm is rotatably connected to the distal end of the housing by a first hinge assembly, and wherein the stabilizer arm is rotatably connected to the distal end of the housing by a second hinge assembly.
3. The device of claim 1 , wherein the appendage arm is fixedly secured to the distal end of the housing, wherein a body of the appendage arm comprises a flexibly material having a desired preformed resting shape that is non-linear, wherein the stabilizer arm is fixedly secured to the distal end of the housing, and wherein a body of the stabilizer arm comprises a flexibly material having a desired preformed resting shape that is non-linear.
4. The device of claim 1 , wherein the securing device is an active fixation helix.
5. The device of claim 1 , wherein the appendage arm is rotatably connected to the distal end of the housing by a first hinge assembly, and wherein the stabilizer arm is rotatably connected to the distal end of the housing by a second hinge assembly.
6. The device of claim 1 , wherein the pusher cup has a pusher receptacle.
7. The device of claim 6 , wherein the pusher receptacle has a threaded recess configured to threadably receive a top of a pusher tool.
8. The device of claim 1 , wherein the stabilizer arm has a core structure that is torque and compression resistant.
9. The device of claim 1 , wherein the appendage arm has a core structure that is torque and compression resistant.