Transcatheter Prosthetic Heart Valve Delivery System and Method With Expandable Stability Tube
0 Assignments
0 Petitions
Accused Products
Abstract
A device for percutaneously delivering a stented prosthetic heart valve. The device includes an inner shaft assembly, a delivery sheath assembly, an outer stability tube, and a handle. The sheath assembly is slidably disposed over the inner shaft, and includes a capsule and a shaft. The capsule compressively contains the prosthesis over the inner shaft. The stability tube is slidably disposed over the delivery sheath, and includes a distal region configured to be radially expandable from a first shape having a first diameter to a second shape having a larger, second diameter. In a first delivery state, the distal region assumes the first shape, providing a low profile appropriate for traversing a patient'"'"'s vasculature. In a second delivery state, the distal region has the expanded diameter second shape, sized to receive the capsule, such as when retracting the capsule to implant the prosthesis.
-
Citations
35 Claims
-
1-21. -21. (canceled)
-
22. A method of restoring a defective heart valve of a patient, the method comprising:
-
receiving a delivery device loaded with a radially self-expandable prosthetic heart valve having a stent frame to which a valve structure is attached, the delivery device including a delivery sheath having a capsule extending distally from a shaft and containing the prosthetic heart valve in a compressed arrangement in a delivery state of the delivery device, the delivery device further including an outer stability tube coaxially received over the delivery sheath, the stability tube including a distal region including a tubular wall having a plurality of cuts formed through a thickness thereof and terminating at a distal end located proximal the capsule and defining a first shape having a first diameter; delivering the prosthetic heart valve in the compressed arrangement through a bodily lumen of the patient to an implantation site of the defective heart valve via the delivery device in the delivery state; and proximally retracting the capsule from over the prosthetic heart valve and at least partially into the distal region such that the prosthetic heart valve self-deploys from the delivery device and implants within the defective heart valve, the distal region assuming a second shape having a second diameter greater than the first diameter for receiving the capsule. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
-
-
30. A method of delivering a prosthetic heart valve, the method comprising:
-
compressing a self-expandable prosthetic heart valve onto a delivery shaft of a delivery device; distally advancing a capsule over the compressed prosthetic heart valve to contain the prosthetic heart valve; advancing the compressed prosthetic heart valve through a body lumen to an implantation site; proximally retracting the capsule from over the prosthetic heart valve and at least partially into an expandable sheath such that the prosthetic heart valve self-deploys from the delivery device at the implantation site. - View Dependent Claims (31, 32, 33, 34, 35)
-
Specification