Single-chamber leadless intra-cardiac medical device with dual-chamber functionality and shaped stabilization intra-cardiac extension

• US 8,700,181 B2
• Filed: 01/17/2012
• Issued: 04/15/2014
• Est. Priority Date: 11/03/2011
• Status: Active Grant

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Inventors: Bornzin, Gene A., Min, Xiaoyi, Poore, John W., Somogyi, Zoltan, Theret, Didier
• Primary Examiner(s): Koharski, Christopher D
• Assistant Examiner(s): CAREY, MICHAEL JAMES
• Application Number:
  US13/352,101
• Publication Number:
  US 20130116740A1
• Time in Patent Office: 819 Days
• Field of Search: 607/9, 607/119, 607/126
• US Class Current: 607/126
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook
• CPC Class Codes: A61N 1/059 Anchoring means
• CPC Class Codes: A61N 1/3684 for stimulating the heart at multiple sites of the ventricle or the atrium
• CPC Class Codes: A61N 1/36843 Bi-ventricular stimulation
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators

Abstract

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.

Claims

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.