PRESSURE TRANSDUCER EQUIPPED CARDIAC PLUG

• US 20130165965A1
• Filed: 12/21/2011
• Published: 06/27/2013
• Est. Priority Date: 12/21/2011
• Status: Abandoned Application

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Inventors: Carlson, Mark, Bornzin, Gene A., Fayram, Timothy A.
• Application Number:
  US13/333,793
• Publication Number:
  US 20130165965A1
• Time in Patent Office: Days
• US Class Current: 606/213
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension

Abstract

Disclosed herein is a pressure sensing left atrial occluding implantable medical device. The implantable medical device includes a cardiac plug and a micro electro-mechanical system (“MEMS”). The cardiac plug includes an expandable lobe and an expandable disc proximal the lobe. The expandable lobe is configured to expand into an anchoring arrangement within the left atrial appendage. The expandable lobe is configured to expand into an occluding arrangement with the left atrial appendage. The MEMS is coupled to the cardiac plug proximal of the disc. The MEMS is configured to sense surrounding fluid pressure.

Claims

1. A pressure sensing left atrial occluding implantable medical device comprising:

a cardiac plug comprising an expandable lobe and an expandable disc proximal the lobe, wherein the expandable lobe is configured to expand into an anchoring arrangement within the left atrial appendage, and the expandable lobe is configured to expand into an occluding arrangement with the left atrial appendage; and

a MEMS coupled to the cardiac plug proximal of the disc, wherein the MEMS is configured to sense surrounding fluid pressure.

2. The device of claim 1, wherein the MEMS includes a CardioMEMS as manufactured by CardioMEMS, Inc.

3. The device of claim 1, wherein the cardiac plug includes an AMPLATZER®

Cardiac Plug as manufactured by AGA Medical Corporation.

4. The device of claim 1, wherein the expandable lobe includes a Nitinol mesh.

5. The device of claim 1, wherein the device further includes a platform secured to the cardiac plug and on which the MEMS is secured.

6. The device of claim 5, wherein the platform includes titanium.

7. The device of claim 1, wherein the platform includes a distal threaded male member and a proximal threaded female member.

8. The device of claim 7, wherein the cardiac plug further comprises a proximal female threaded attachment that threadably couples with the distal threaded male member.

9. The device of claim 5, wherein the platform on which the MEMS is secured is permanently attached to the cardiac plug.

10. The device of claim 5, wherein the MEMS is secured to the platform via wires.

11. A system for sensing pressure in a left atrium near the confines of a left atrial appendage, the system comprising:

an anchor configured to achieve an anchoring interference fit within the confines of the left atrial appendage;

a MEMS coupled to the anchor and configured to protrude into the left atrium when the anchor has achieved the anchoring interference fit, wherein the MEMS is configured to sense surrounding fluid pressure; and

a telemetry device configured to wirelessly communicate with the MEMS to read fluid pressures sensed by the MEMS.

12. The system of claim 11, wherein the anchor is part of a cardiac plug.

13. The system of claim 12, wherein at least one of the MEMS includes a CardioMEMS as manufactured by CardioMEMS, Inc. or the cardiac plug includes an AMPLATZER®

Cardiac Plug as manufactured by AGA Medical Corporation.

14. The system of claim 11, wherein the anchor includes an expandable lobe that is configured to achieve the anchoring interference fit.

15. The system of claim 14, wherein the lobe includes a Nitinol mesh.

16. A method of establishing a pressure sensing arrangement for sensing left atrial pressure, the method comprising:

creating an interference fit between an expandable anchor and a left atrial appendage; and

supporting a MEMS off of the anchor such that the MEMS is located in a volume of the left atrium, the MEMS being configured to sense surrounding fluid pressure.

17. The method of claim 16, wherein the MEMS and anchor are coupled together before being delivered together to the left atrial appendage.

18. The method of claim 16, wherein the MEMS is configured to wirelessly communicate with a telemetry wand.

19. The method of claim 16, wherein the anchor is part of a cardiac plug.

20. The method of claim 19, wherein at least one of the MEMS includes a CardioMEMS as manufactured by CardioMEMS, Inc. or the cardiac plug includes an AMPLATZER®

Cardiac Plug as manufactured by AGA Medical Corporation.