Device for implanting a prosthesis for a heart valve and assembly procedure

1. A procedure for implanting a heart prosthesis in a heart, the heart prosthesis comprising an expandable central body and a containment portion having one or more sub-components, the procedure comprising the steps of:

affording access for a first catheter through a vein;

inserting the first catheter inside a right atrium, through an inferior vena cava and accessing a left atrium through a puncture of a septum;

inserting at least one guidewire through the first catheter and arranging the at least one guidewire around a native valve;

inserting the one or more sub-components of the containment portion through the first catheter;

inserting a device for implanting a heart prosthesis through the first catheter;

connecting the central body to the one or more sub-components of the containment portion;

while maintaining the central body substantially in a stable position inside the heart, deploying the central body position;

wherein the device for implanting the heart prosthesis comprises an assembly of second catheters for assisting the step of connecting the central body and the one or more sub-components of the containment portion, the assembly of second catheters being joined to each other over a portion thereof and each having at least one free end.

2. The procedure according to claim 1 , wherein each of the one or more sub-components is inserted by sliding each of the one or more sub-components over one of the at least one guidewire which is arranged around the native valve.

3. The procedure according to claim 2 , wherein after the step of inserting the one or more sub-components, for each of the one or more sub-components of the containment portion, the step of connecting the central body to the one or more sub-components of the containment portion includes inserting each end of the at least one guidewire in a corresponding connecting element.

4. The procedure according to claim 3 , wherein, for each of the one or more sub-components of the containment portion, the step of connecting the central body to the one or more sub-components of the containment portion includes pulling ends of the at least one guidewire.

5. The procedure according to claim 4 , wherein the assembly of second catheters comprises at least two second catheters for each of the one or more sub-components of the containment portion, the procedure further comprising the step of:

inserting each end of the at least one guidewire into a corresponding catheter of the assembly of second catheters, at the at least one free end thereof.

6. The procedure according to claim 5 , wherein the at least two second catheters which constitute the assembly of second catheters are grouped together in a same sheath which groups together the at least two second catheters along a portion thereof.

7. The procedure according to claim 6 , wherein the access is brought about by a femoral vein.

8. The procedure according to claim 5 , wherein the at least two second catheters which constitute the assembly of second catheters are incompressible in a longitudinal direction.

9. The procedure according to claim 8 , wherein the at least two second catheters which constitute the assembly of second catheters form an incompressible abutment channel for the at least one guidewire.

10. The procedure according to claim 9 , wherein the at least two second catheters which constitute the assembly of second catheters are grouped together in a same sheath which groups together the at least two second catheters along a portion thereof.

11. The procedure according to claim 10 , wherein the access is brought about by a femoral vein.

12. The procedure according to claim 9 , wherein the access is brought about by a femoral vein.

13. The procedure according to claim 8 , wherein the at least two second catheters which constitute the assembly of second catheters are grouped together in a same sheath which groups together the at least two second catheters along a portion thereof.

14. The procedure according to claim 13 , wherein the access is brought about by a femoral vein.

15. The procedure according to claim 8 , wherein the access is brought about by a femoral vein.

16. The procedure according to claim 5 , wherein the access is brought about by a femoral vein.

17. The procedure according to claim 4 , wherein the access is brought about by a femoral vein.

18. The procedure according to claim 3 , wherein the access is brought about by a femoral vein.

19. The procedure according to claim 2 , wherein the access is brought about by a femoral vein.

20. The procedure according to claim 1 , wherein the access is brought about by a femoral vein.

21. A procedure for implanting a heart prosthesis in a heart, the heart prosthesis comprising an expandable central body and a containment portion having one or more sub-components, the procedure comprising the steps of:

affording access for a first catheter through a vein;

inserting the first catheter inside a right atrium, through an inferior vena cava and accessing a left atrium through a puncture of a septum;

inserting at least one guidewire through the first catheter and arranging the at least one guidewire around a native valve;

inserting the one or more sub-components of the containment portion through the first catheter;

inserting a device for implanting a heart prosthesis through the first catheter, the device for implanting the heart prosthesis comprising an assembly of second catheters, the assembly of second catheters being joined to each other over a portion thereof and each having at least one free end;

inserting each end of the at least one guidewire into a corresponding catheter of the assembly of second catheters at the at least one free end thereof;

assisted by the assembly of second catheters, connecting the central body to the one or more sub-components of the containment portion; and

while maintaining the central body substantially in a stable position inside the heart, deploying the central body in position.