PERICARDIAL INSERTS

• US 20080275294A1
• Filed: 07/12/2007
• Published: 11/06/2008
• Est. Priority Date: 05/01/2007
• Status: Abandoned Application

• Current Assignee: Michael Gertner
• Original Assignee: Michael Gertner
• Inventors: Gertner, Michael
• Application Number:
  US11/777,253
• Publication Number:
  US 20080275294A1
• Time in Patent Office: Days
• US Class Current: 600/37
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61F 2/2481 Devices outside the heart wall, e.g. bags, strips or bands
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium

Abstract

Devices, systems and methods are provided which are capable of applying pressure and constraint to the heart and use the pericardium to assist in the application of the pressure and force to the heart.

Claims

1. A system for remodeling a heart comprising:

a delivery sheath having a diameter of 2 cm or less;

an intrapericardial device having a delivery configuration and a deployed configuration, the device in its delivery configuration being disposed within the delivery sheath, the intrapericardial device in its deployed configuration being adapted to be disposed outside the sheath and within a pericardial space of a heart, the intrapericardial device in its deployed configuration having a greater length in at least one dimension than in its delivery configuration; and

a delivery tool adapted to advance the intrapericardial device through the sheath and into a pericardial space.

2. The system of claim 1 wherein the intrapericardial device in its delivery configuration has at least a 200% greater length in at least another dimension than in its deployed configuration.

3. The system of claim 1 wherein the intrapericardial device comprises a shaping component adapted to control movement of the intrapericardial device from the delivery configuration to the deployed configuration.

4. The system of claim 3 wherein the intrapericardial device comprises a first and second regions of material, the first region of material comprising the shaping component and being more rigid than the second region of material.

5. The system of claim 1 wherein the intrapericardial device comprises an outer material surrounding a shape memory element.

6. The system of claim 1 wherein the intrapericardial device comprises a sealed chamber containing a fluid and a fluid port communicating with the chamber, the chamber containing more fluid in the device'"'"'s deployed configuration than in the device'"'"'s delivery configuration.

7. The system of claim 1 wherein the intrapericardial device in its deployed configuration has a radius of curvature between 2.5 cm and 10 cm.

8. The system of claim 1 wherein the intrapericardial device comprises a membrane having a thickness of 50 microns or less.

9. The system of claim 8 wherein the intra pericardial device comprises a membrane having a thickness of 25 microns or less.

10. The system of claim 8 wherein the membrane is formed at least in part from hydrothane.

11. An intrapericardial device comprising a delivery configuration and a deployed configuration, the device in its delivery configuration being disposed within a delivery sheath having a diameter of 2 cm or less, the intrapericardial device in its deployed configuration being adapted to be disposed outside a delivery sheath and within an intrapericardial space of a heart, the intrapericardial device in its deployed configuration having a greater length in at least one dimension than in its delivery configuration, the intrapericardial device comprising a shape memory material adapted to move the device at least partially from the delivery configuration to the deployed configuration.

12. The system of claim 11 wherein the intrapericardial device in its delivery configuration has at least a 200% greater length in at least another dimension than in its deployed configuration.

13. The system of claim 11 wherein the intrapericardial device comprises a shaping component adapted to control movement of the intrapericardial device from the delivery configuration to the deployed configuration.

14. The system of claim 13 wherein the intrapericardial device comprises a first and a second region of material, the first region of material comprising the shaping component and being more rigid than the second region of material.

15. The system of claim 11 wherein the intrapericardial device comprises an outer material surrounding a shape memory element.

16. The system of claim 11 wherein the intrapericardial device comprises a sealed chamber containing a fluid and a fluid port communicating with the chamber, the chamber containing more fluid in the device'"'"'s deployed configuration than in the device'"'"'s delivery configuration.

17. The system of claim 11 wherein the intrapericardial device in its deployed configuration has a radius of curvature between 2 cm and 6 cm.

18. The system of claim 11 wherein the intrapericardial device comprises a membrane having a thickness of 50 microns or less.

19. The system of claim 18 wherein the intrapericardial device comprises a membrane having a thickness of 25 microns or less.

20. The system of claim 18 wherein the membrane is formed at least in part from a hydrophilic elastomer.

21. An intrapericardial device comprising a delivery configuration and a deployed configuration, the device in its delivery configuration being disposed within a delivery sheath, the intrapericardial device in its deployed configuration being adapted to be disposed outside a delivery sheath and within an intrapericardial space of a heart, the intrapericardial device further comprising a shape memory region and an inflatable region.

22. The device of claim 21 wherein said shape memory region comprises a polymer material.

23. The device of claim 21 wherein said shape memory region is constructed so as to induce a shape which conforms to an epicardial region of the heart.

24. The device of claim 21 wherein said shape memory region comprises a metal alloy.

25. The device of claim 21 wherein said inflatable region comprises an elastomer.

26. The device of claim 21 wherein said shape memory region is constructed so as to assist expansion of the inflatable region after the device is deployed from said delivery sheath.