Catheter system

Patent metadata

Field	Value
Publication number	US-10856978-B2
Application number	US-80109010-A
Country	US
Kind code	B2
Filing date	May 20, 2010
Priority date	May 20, 2010
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

The invention relates to catheter system for introducing an expandable heart valve stent (150) into the body of a patient, the catheter system comprising: a catheter tip (10) having a seat portion for accommodating the stent (150) in its collapsed state and a stent holder (15) for releasably fixing the stent (150), wherein the seat portion is constituted by a first sleeve-shaped member (11) and a second sleeve-shaped member (21), said sleeve-shaped members (11, 21) being moveable relative to each other and relative to the stent holder (15), and a catheter shaft (30) for connecting the catheter tip (10) to a handle (70). The catheter shaft (30) comprising: first force transmitting means (31) connected to the first sleeve-shaped member (11), second force transmitting means (41) connected to the second sleeve-shaped member (21) and a distal end section connectable to second operating means (81) of the handle (70), and guiding means (51) having a passageway extending there between, wherein the first and second force transmitting means (31, 41) are at least partly received within the passageway such as to be moveable relative to the guiding means (51), and wherein the proximal end of the guiding means (51) terminates distal to the catheter tip (10).

First claim

The invention claimed is:

1. A catheter system for implanting an endoprosthesis, the catheter system comprising:
a catheter tip configured for accommodating the endoprosthesis in a collapsed state, the catheter tip including a holder for releasably fixing the endoprosthesis to the catheter system, a sleeve member, and an end tip, wherein the sleeve member is moveable relative to the end tip and relative to the holder;
a catheter handle including a rotatable actuator; and
a catheter shaft connecting the catheter tip to the catheter handle, the catheter shaft including:
a first tubular member having a distal end connected to the sleeve member and a proximal end connected to the rotatable actuator of the catheter handle;
a second tubular member having a distal end connected to end tip and a proximal end connected to the catheter handle;
a third tubular member defining a passageway extending therein and having a proximal end releasably connected to the handle and a distal end that terminates proximally with respect to the catheter tip, wherein the third tubular member includes an inlet to permit injection of fluid between the third tubular member and the first tubular member, and the third tubular member being moveable with the inlet relative to the catheter handle independent of movement of the first tubular member and having a cross-sectional size equal to a cross-sectional size of the catheter tip; and
a fourth tubular member having a proximal end connected to the catheter handle, wherein the fourth tubular member is disposed concentrically within each of the first tubular member and the third tubular member;

wherein a portion of the shaft that includes each of the first, second, third, and fourth tubular members is flexible to permit navigation of the portion of the shaft through a blood vessel;
wherein the third tubular member is releasable from the handle and movable relative to the first tubular member and the handle while the first tubular member is connected to the rotatable actuator.

2. The catheter system according to claim 1 , wherein the handle is disposed at a proximal-most end of the catheter system.

3. The catheter system according to claim 1 , wherein the inlet of the third tubular member includes a check valve configured to selectively restrict fluid flow therethrough.

4. The catheter system according to claim 1 , wherein the second tubular member is disposed concentrically within the first tubular member.

5. The catheter system according to claim 1 , wherein the first tubular member has a length that is substantially the same as a length of the second tubular member.

6. The catheter system according to claim 1 , wherein the distal end of the first tubular member terminates in a flared section that defines a transition to the sleeve member.

7. The catheter system according to claim 6 , wherein the flared section of the first tubular member has a cross-sectional size equal to the cross-sectional size of the third tubular member.

8. The catheter system according to claim 1 , wherein a distal end of the fourth tubular member is rigidly fixed to the holder and the proximal end of the fourth tubular member is rigidly fixed to the catheter handle.

9. The catheter system according to claim 1 , wherein the third tubular member is disposed concentrically outside the first and second tubular members.

10. The catheter system according to claim 1 , further comprising the endoprosthesis, wherein the endoprosthesis is self-expandable and includes a prosthetic valve attached to a stent, and the stent and the prosthetic valve are held in a collapsed state within the catheter tip by the sleeve member.

11. The catheter system according to claim 1 , wherein the third tubular member includes an inner layer, an outer layer, and a reinforcement element between the inner and outer layers.

12. The catheter system according to claim 1 , wherein the distal end of the first tubular member terminates in a flared section that defines the sleeve member such that the first tubular member is integral with the sleeve member.

13. The catheter system according to claim 1 , wherein the catheter handle includes a trigger that controls movement of the sleeve member.

14. The catheter system according to claim 1 , wherein the catheter shaft has a size ranging from 18 F to 21 F.

15. The catheter system according to claim 1 , wherein the holder is concentric with the second tubular member and includes three recesses for receiving three retaining elements of the endoprosthesis.

16. The catheter system according to claim 1 , wherein the first tubular member is permanently connected to the rotatable actuator of the catheter handle, and the third tubular member is not removable from the catheter system.

17. A catheter system for implanting an endoprosthesis, the catheter system comprising:
a catheter tip configured for accommodating the endoprosthesis in a collapsed state, the catheter tip including a holder for releasably fixing the endoprosthesis to the catheter system, a sleeve member, and an end tip, wherein the sleeve member is moveable relative to the end tip and relative to the holder, wherein the holder includes three recesses for receiving three retaining elements of the endoprosthesis;
a catheter handle disposed at a proximal-most end of the catheter system and including an operating mechanism comprising a rotatable actuator; and
a catheter shaft connecting the catheter tip to the catheter handle, the catheter shaft including:
a first tubular member having a distal end connected to the sleeve member and a proximal end connected to the operating mechanism of the catheter handle;
a second tubular member having a distal end connected to the end tip and a proximal end connected to the catheter handle;
a third tubular member disposed concentrically outside the first tubular member, the third tubular member having a proximal end releasably connected to the handle and a distal end that terminates proximally with respect to the catheter tip, wherein the proximal end of the third tubular member includes an inlet to permit injection of fluid between the third tubular member and the first tubular member, and the third tubular member having a cross-sectional size equal to a cross-sectional size of the catheter tip, and
a fourth tubular member connected to the catheter handle, wherein the fourth tubular member is disposed concentrically within each of the first tubular member and the third tubular member;

wherein the third tubular member is releasable from the handle while the first tubular member is connected to the rotatable actuator, such that the third tubular member is movable relative to the first tubular member and the handle; and
wherein the third tubular member and the inlet are moveable relative to the handle while the fourth tubular member is attached to the handle, and wherein the third tubular member and the inlet are movable relative to the first tubular member independent of movement of the first tubular member via the rotatable actuator.

18. The catheter system according to claim 17 , wherein the second tubular member is disposed concentrically within the first tubular member, the second tubular member defining a lumen for receiving a guidewire.

19. The catheter system according to claim 17 , further comprising the endoprosthesis, wherein the endoprosthesis is self-expandable and includes a prosthetic valve attached to a stent, and the stent and the prosthetic valve are held in a collapsed state within the catheter tip by the sleeve member.

Assignees

• Straubinger Helmut
• Mayer Arnulf
• Jung Johannes
• Jenavalve Tech Inc

Inventors

• Straubinger Helmut
• Mayer Arnulf
• Jung Johannes

Classifications

• A61F2/966

  with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title

• A61F2/2427

  Devices for manipulating or deploying heart valves during implantation · CPC title

• A61F2/9517

  handle assemblies therefor · CPC title

• A61F2/2418

  Scaffolds therefor, e.g. support stents · CPC title