Endoventicular device for the treatment and correction of cardiomyopathies

• US 20110066235A1
• Filed: 04/27/2010
• Published: 03/17/2011
• Est. Priority Date: 04/13/2000
• Status: Active Grant

• Current Assignee: Cube Corporation (Babcock International Group PLC)
• Original Assignee: Cube Corporation (Babcock International Group PLC)
• Inventors: Ferrazzi, Paolo
• Granted Patent: US 8,622,884 B2
• Time in Patent Office: Days
• US Class Current: 623/2.37
• 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: A61F 2/2487 Devices within the heart chamber, e.g. splints

Abstract

The invention consists in a device that concerns the optimization of the cardiac geometry in patients with heart failure. The device comprises one or more elastic elements in the radial direction towards the inside of the ventricle and plastic deformation in a direction that is transversal to the said ventricle, the element being equipped with means for attaching it to the internal wall of the ventricle.

Claims

1. A mitral valve repair device for mitral annuplasty comprising one annular spring shaped device being formed as an elastic structure having flexibility along an axis of a ventricular cavity and having radial elasticity and at least one attachment member for effectively establishing a connection to the mitral valve native annulus;

wherein the annular spring shaped device is so configured and sized to expand from its rest position and receive energy from the mitral valve native annulus during a diastolic phase of heart pumping activity;

to collapse and cede the energy received to the mitral valve native annulus during a systolic phase of heart pumping activity.

2. The device according to claim 1, wherein the annular spring shaped device is a coil spring.

3. The device according to claim 2, wherein the relationship between elastic deformations of the coil spring and the endoventricular pressure is not linear.

4. The device according to claim 3, wherein said elastic deformation decreases as endoventricular pressure increases.

5. The device according to claim 4, wherein said elastic deformation continuously limits diastolic dilatation.

6. The device according to claim 1, wherein the annular the ring shaped device is an open ring.

7. The device according to claim 1, wherein the annular the ring shaped device is a closed ring.

8. An endocardial heart function intervention device comprising one annular spring shaped device and at least one attachment member, for effectively establishing a connection to an interior endocardium wall, said annular spring shaped device having flexibility along an axis of a ventricular cavity and, upon being connected to heart tissue internally of the ventricular cavity via the attachment member configuring spring elasticity to effectively establish a radial elasticity during a diastolic phase which diminishes inversely with endoventricular pressure in such way as to ensure that the device opposes greater resistance to dilation as it expands towards its maximum diameter which coincides with the maximum value of end-diastolic pressure, so that each device, when connected in place, is configured to be adjusted axially and radially to and along a section of the endocardial wall while in a neutral rest condition and can thereafter expand to receive energy from the endocardial wall during the diastolic phase, to cede energy received to the endocardial wall during a systolic phase.

9. The endocardial heart function intervention device as in claim 8, wherein the annular spring shaped device comprise a coil spring.

10. The endocardial heart function intervention device as in claim 8, wherein the annular spring shaped device comprise a flat spring.

11. The endocardial heart function intervention device as in claim 9, wherein the ring annular spring shaped device is an open ring.

12. The endocardial heart function intervention device as in claim 9 wherein the annular spring shaped device is a closed ring.

13. The endocardial heart function intervention device as in claim 9, wherein the attachment member includes biocompatible material attached to the annular spring shaped device for being sutured to the heart.

14. The endocardial heart function intervention device as in claim 9, wherein the annular spring shaped device comprises formed connection portions and spring portions;

the formed connection portions being dimensionally different from the spring portions within the body shape.

15. An endocardial heart function intervention device comprising, at least one ring shaped device having a substantially elliptical, circular or asymmetrical body shape and being formed as an elastic spring having transversal dimensional variations in the form of spring portions and formed connection portions created from the material comprising the spring, the formed connection portions being positioned along the device thus configuring the device to be directly sutured in place within a heart and onto an endocardium wall, said elastic spring having flexibility along an axis of a ventricular cavity and configuring spring elasticity during suturing of the elastic spring onto heart tissue to effectively establish a radial elasticity therein during a diastolic phase which diminishes inversely with endoventricular pressure in such way as to ensure that the device opposes greater resistance to dilation as it expands towards its maximum diameter which coincides with the maximum value of end-diastolic pressure, so that each device, when connected in place, is configured to be adjusted axially and radially to and along a section of the endocardial wall while in a neutral rest condition and can thereafter expand to receive energy from the endocardial wall during a first part of the diastolic phase, to cede energy received to the endocardial wall during a first part of a systolic phase and each shaped device can also receive energy from the endocardial wall during a second part of the systolic phase and to cede energy to the endocardial wall during a second part of the diastolic phase.

16. The endocardial heart function intervention device as in claim 15 wherein the device is positioned about the mitral annulus.

17. The endocardial heart function intervention device as in claim 15 further including biocompatible material attached to the shaped device for being sutured to the heart.

18. The endocardial heart function intervention device as in claim 17 wherein the biocompatible material comprises a covering including at least one lip portion extending outwardly from the shaped device.

19. The endocardial heart function intervention device as in claim 18 wherein the covering is a woven structure.

20. The endocardial heart function intervention device as in claim 15 wherein the formed connection portions exhibit a different shape from the remainder of the body shape.