Method and apparatus for fine adjustment of a percutaneous valve structure
The invention provides a device for fine adjustment of a prosthetic valve device and a method of adjusting the position of a prosthetic valve after implantation. The adjustment mechanism includes complementary structures on a valve member and device frame that cooperate to provide relative axial and/or angular motion between the valve member and device frame (and thus the native vessel). The adjustment mechanism of the invention may also include a means for selectively maintaining the relative position of the valve member and device frame. The device and method are particularly applicable for use with a modular prosthetic valve device that is assembled in the body lumen.
1. An apparatus for adjusting the position of a valve member of a percutaneous valve device, comprising:
a first adjustment structure located on said valve member; and
a second adjustment structure located on a device frame;
wherein said valve member and said device frame together comprise said valve device, said percutaneous valve device having a first configuration for percutaneous delivery and a second configuration as a working configuration; and wherein said first adjustment structure has a configuration that fits together in a complementary manner with a configuration on said second adjustment structure within a range of relative positions between the valve member and device frame; said apparatus configured to allow adjustment of an angular position of said valve member relative to said device frame;
wherein said valve device is a modular valve device, said valve member and device frame being configured to be delivered separately and assembled into said valve device after deployment from said delivery device.
2. The apparatus of claim 1 , wherein the first adjustment structure is a helix rail and the second adjustment structure is a roller.
3. The apparatus of claim 2 , wherein the helix rail and roller cooperate to permit rotation of said valve member around a longitudinal axis of the percutaneous valve device.
4. The apparatus of claim 2 , wherein said valve member is adapted to permit pushing and pulling thereof along a helix rail.
5. The apparatus of claim 4 , further comprising a pull-wire to affect movement of the valve member.
6. The apparatus of claim 2 , wherein the helix rail is a wire.
7. The apparatus of claim 2 , wherein the helix rail is formed of a shape-memory material.
8. The apparatus of claim 2 , wherein the helix rail is a helical coil.
9. The apparatus of claim 8 , wherein the first and second adjustment structures cooperate to permit a range of relative positions between said valve member and said device frame along a longitudinal axis of the percutaneous valve device in said expanded configuration.
10. The apparatus of claim 1 , wherein the first adjustment structure is a plurality of complementary protrusions located on said valve member and the second adjustment structure is a helix groove, the protrusions adapted for engagement with the helix groove.
11. The apparatus of claim 10 , wherein the protrusions are fixed or spring-loaded.
12. A system comprising:
a percutaneous valve device, said valve device comprising a first adjustment structure on a valve member, and a second adjustment structure located on a device frame; wherein said valve member and said device frame together comprise said percutaneous valve device, said percutaneous valve device having a first configuration for percutaneous delivery and a second configuration as a working configuration; and wherein said first adjustment structure has a configuration that fits together in a complimentary manner with a configuration on said second adjustment structure within a range of relative positions between the valve member and device frame; said percutaneous delivery device configured to allow adjustment of an angular position of said valve member relative to said device frame; and
a delivery device for percutaneously delivering and deploying said valve device;
wherein said valve device is a modular valve device, said valve member and device frame being configured to be delivered separately and assembled into said valve device after deployment from said delivery device.
13. The system of claim 12 , wherein the first adjustment structure is a helix rail and the second adjustment structure is a roller.
14. The system of claim 13 , wherein the helix rail and roller cooperate to permit rotation of said valve member around a longitudinal axis of the percutaneous valve device.
15. The system of claim 13 , wherein said valve member is adapted to permit pushing and pulling thereof along a helix rail.
16. The system of claim 15 , further comprising a pull-wire to affect movement of the valve member.
17. The system of claim 13 , wherein the helix rail is a wire.
18. The system of claim 13 , wherein the helix rail is formed of a shape-memory material.
19. The system of claim 13 , wherein the helix rail is a helical coil.
20. The system of claim 19 , wherein the first and second adjustment structures cooperate to permit a range of relative positions between said valve member and said device frame along a longitudinal axis of the percutaneous valve device in said working configuration.
21. The system of claim 12 , wherein the first adjustment structure is a plurality of complimentary protrusions located on said valve member and the second adjustment structure is a helix groove, the protrusions adapted for engagement with the helix groove.
22. The system of claim 21 , wherein the protrusions are fixed or spring-loaded.
23. The system of claim 12 , further comprising a position-maintaining means.
24. The system of claim 12 , wherein said valve member is a valve module and said device frame is a support structure.
25. The system of claim 12 , wherein said delivery device is a catheter.
26. A method of adjusting the position of a valve member of a percutaneous valve delivery system, the method comprising:
providing a delivery device containing a percutaneous valve device, said valve device comprising a first adjustment structure on said valve member and a second adjustment structure located on a device frame, wherein said valve member and said device frame together comprise said percutaneous valve device, said percutaneous valve device having a first configuration for percutaneous delivery and a second configuration as a working configuration, and wherein said first adjustment structure has a configuration that fits together in a complimentary manner with a configuration on said second adjustment structure within a range of relative positions between the valve member and device frame; said percutaneous delivery device configured to allow adjustment of an angular position of said valve member relative to said device frame;
deploying said percutaneous valve device from said delivery device and expanding said percutaneous valve device to form said second configuration; and
adjusting the angular position of said valve member independently of and relative to a position of said device frame via said first and second adjustment structures.
27. The method of claim 26 , wherein said valve device is a modular valve device, said valve member is a valve module, and said device frame is a support structure; wherein said deploying step includes deploying said valve module and deploying said support structure;
said method further comprising assembling said valve module and said support structure into said valve device.
28. The method of claim 26 , wherein said valve device further comprises a position-maintaining means, said method further comprising:
locking said first and second adjustment structures together via said position-maintaining means.
29. The method of claim 26 , wherein said delivery device further comprises a pull wire; said method further comprising using said pull wire to adjust said angular position of said valve member relative to said device frame.
30. The method of claim 27 , wherein said method further comprises locking said valve module and said support structure together using a locking mechanism.