STENT-VALVE, DELIVERY APPARATUS, AND STENT-HOLDER THEREFOR

• US 20150245934A1
• Filed: 09/27/2013
• Published: 09/03/2015
• Est. Priority Date: 09/27/2012
• Status: Active Grant

• Current Assignee: Boston Scientific Medical Device Limited (Boston Scientific Corporation)
• Original Assignee: Symetis SA (Boston Scientific Corporation)
• Inventors: Lombardi, Fabien, Delaloye, Stephane, Hefti, Jean-Luc, Mantanus, Luc
• Granted Patent: US 10,188,536 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: F04C 2270/0421 Controlled or regulated

Abstract

A delivery device for delivering a stent-valve to an anatomical site for implantation, the delivery device comprising a stent-holder (24) having at least one element for engaging the stent-valve for retaining an axial position of the stent-valve when carried on the delivery device, the element selected from a projection (84b) and/or a generally step-shaped surface, and wherein the element further comprises a ramp portion (84a, 84c) facing, or provided on a side of the element that faces, (i) a proximal direction of the device, and/or (ii) away from a distal end of the device.

Claims

1. A delivery device for delivering a stent-valve to an anatomical site for implantation, the delivery device comprising a stent-holder having at least one element for engaging the stent-valve and for retaining an axial position of the stent-valve when carried on the delivery device, the at least one element comprising:

at least one of a projection and/or a generally step-shaped surface; and

a ramp portion facing, or provided on a side of the element that faces, (i) a proximal direction of the device, and/or (ii) away from a distal end of the device.

2. The device of claim 1, wherein the projection is positioned within an interstice of a body of the stent-holder.

3. The device of claim 1, wherein the projection is configured for entering an eye of the stent-valve for engaging the stent-valve.

4. The device of claim 1, wherein the projection has a trunk portion, and wherein the ramp portion extends laterally from the trunk portion and has a smaller thickness than a corresponding thickness of the trunk portion.

5. The device of claim 1, wherein the element is a generally step-shaped surface, and wherein the ramp portion bridges the step-shape at at least one position.

6. The device of claim 1, comprising at least one first element in the form of a projection with a first ramp portion, and at least one second element in the form of a generally step-shaped surface with a second ramp portion.

12. A delivery system comprising a delivery device as defined in claim 1, the system further comprising a stent-valve.

7. A stent-holder for a delivery device for delivering a stent-valve to an anatomical site for implantation, the stent-holder comprising at least one projection for engaging a complementary region of a stent-valve, the at east one projection having a ramp portion.

9. A delivery device for delivering a stent-valve to an anatomical site for implantation, the delivery device comprising a stent-holder as defined in claim 7.

10. The delivery device of claim 9, wherein the ramp portion faces in a proximal direction of the device.

11. The delivery device of claim 9, wherein the ramp portion faces away from a distal end of the device.

16. A delivery system comprising the delivery device as defined in claim 9, the system further comprising a stent-valve.

8. A stent-holder for a delivery device for delivering a stent-valve to an anatomical site for implantation, the stent-holder comprising at least one generally step-shaped surface portion including a ramp portion bridging the step-shape at at least one position.

13. A delivery device for delivering a stent-valve to an anatomical site for implantation, the delivery device comprising the stent-holder as defined in claim 8.

14. The delivery device of claim 13, wherein the ramp portion faces in a proximal direction of the device.

15. The delivery device of claim 13, wherein the ramp portion faces away from a distal end of the device.

17. A delivery system comprising the delivery device as defined in claim 13, the system further comprising a stent-valve.