Balloon expandable delivery system with actuated valve retention
AssigneeBoston Scientific Scimed, Inc.
InventorJames M. Anderson
Life of this patent
Estimating the term…
Abstract
A delivery system for an expandable prosthetic heart valve is provided. The delivery system includes an elongate inner member, a distal stop and a proximal stop both disposed on the elongate inner member. At least one of the proximal and distal stops is fixed to the elongate inner member. The delivery system also includes a flexible member disposed around the elongate inner member and having a distal end, a central region, and a proximal end, and an inflatable balloon disposed over the flexible member. The flexible member is configured such that when a heart valve is crimped onto the central region, the central region compresses and proximal and distal regions of the flexible member expand radially to prevent axial movement of the valve.
Claims19
A delivery system for an expandable prosthetic heart valve, comprising:
- an elongate inner member;
- a distal stop disposed on the elongate inner member and a proximal stop spaced apart from the distal stop and disposed on the elongate inner member, wherein at least one of the proximal and distal stops is fixed to the elongate inner member;
- a flexible member disposed around the elongate inner member, the flexible member having a distal end fixed to the distal stop, a central region, and a proximal end fixed to the proximal stop;
- and
- an inflatable balloon disposed over the flexible member;
- wherein the flexible member is configured such that when a heart valve is crimped onto the central region, the central region compresses and proximal and distal regions of the flexible member expand radially to prevent axial movement of the heart valve;
- and
- wherein the flexible member is biased in a relaxed configuration with the central region spaced apart from the elongate inner member.
A delivery system for an expandable prosthetic heart valve, comprising:
- an elongate inner member defining an inner lumen;
- a distal stop fixed to the elongate inner member and a proximal stop fixed to the elongate inner member, the proximal stop spaced apart from the distal stop;
- a flexible member disposed around the elongate inner member, the flexible member having a distal end fixed to the distal stop, a central region, and a proximal end fixed to the proximal stop, the flexible member biased in a relaxed configuration with the central region spaced apart from the elongate inner member;
- and
- an inflatable balloon disposed over the flexible member;
- wherein the flexible member is configured such that when a heart valve is crimped onto the central region, the central region moves from the relaxed configuration to a compressed configuration in which the central region is adjacent the elongate inner member and proximal and distal regions of the flexible member expand radially to prevent axial movement of the heart valve.
A delivery system for an expandable prosthetic heart valve, comprising:
- an elongate inner member;
- a distal stop fixed to the elongate inner member and a proximal stop spaced apart from the distal stop and fixed to the elongate inner member;
- a flexible member disposed around the elongate inner member, the flexible member having a distal portion fixed to the distal stop, and a separate proximal portion fixed to the proximal stop, wherein the distal portion and the proximal portion are spaced apart longitudinally, wherein a proximal section of the distal portion and a distal section of the proximal portion define a central region configured to receive a heart valve;
- and
- an inflatable balloon disposed over the flexible member;
- wherein the flexible member is configured such that when the heart valve is crimped onto the central region, the proximal portion of the flexible member moves proximally into a radially expanded configuration, and the distal portion of the flexible member moves distally into a radially expanded configuration, thereby preventing axial movement of the heart valve;
- and
- wherein the flexible member is biased in a relaxed configuration with the central region spaced apart from the elongate inner member.
Dependencies are inferred from the claim text.