Prosthetic heart valve and delivery apparatus
First Claim
1. An assembly for delivering a prosthetic heart valve via a patient'"'"'s vasculature, comprising:
- a prosthetic heart valve comprising a collapsible and expandable annular frame and a collapsible and expandable valve member mounted within the annular frame the valve member comprising a tricuspid valve configuration formed with pericardial tissue and configured for allowing blood flow in only one direction when in an expanded condition;
a heart valve delivery apparatus comprising;
a handle portion;
a first shaft having a proximal end portion and a distal end portion, the proximal end portion being connected to the handle portion;
a flexible second shaft extending through the first shaft, the second shaft and the first shaft being adapted to extend through the patient'"'"'s vasculature; and
a valve sheath having a proximal end portion coupled to the distal end portion of the first shaft, the valve sheath also having a distal end portion extending distally past the distal end portion of the first shaft, the distal end portion of the valve sheath defining a distal opening;
wherein the valve is in a compressed state and is disposed within the valve sheath, which extends over the entire length of the valve and retains the valve in the compressed state for delivery to the heart through the patient'"'"'s vasculature;
wherein when the valve is retained in a compressed state within the sheath, the sheath is in a distal position relative to the first shaft, wherein the second shaft is configured such that rotation of the second shaft relative to the first shaft and the sheath is effective to cause relative longitudinal movement between the sheath and the first shaft and between the sheath and the valve to cause the valve to be deployed outwardly through the distal opening of the sheath for deployment in the heart, and wherein the relative longitudinal movement between the sheath and the first shaft is effective to position the sheath at a proximal position relative to the first shaft in which the distal end of the sheath is proximal to the deployed valve.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the present disclosure provide a prosthetic heart valve and a heart valve delivery apparatus for delivery of the prosthetic heart valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a diseased native aortic valve. In one embodiment, a self-expanding valve comprises an expandable stent that is shaped to maintain the valve in the aortic annulus against axial without anchors or retaining devices that engage the surrounding tissue. A delivery apparatus for delivering s self-expanding prosthetic valve can be configured to allow controlled and precise deployment of the valve from a valve sheath so as to minimize or prevent jumping of the valve from the valve sheath.
-
Citations
21 Claims
-
1. An assembly for delivering a prosthetic heart valve via a patient'"'"'s vasculature, comprising:
-
a prosthetic heart valve comprising a collapsible and expandable annular frame and a collapsible and expandable valve member mounted within the annular frame the valve member comprising a tricuspid valve configuration formed with pericardial tissue and configured for allowing blood flow in only one direction when in an expanded condition; a heart valve delivery apparatus comprising; a handle portion; a first shaft having a proximal end portion and a distal end portion, the proximal end portion being connected to the handle portion; a flexible second shaft extending through the first shaft, the second shaft and the first shaft being adapted to extend through the patient'"'"'s vasculature; and a valve sheath having a proximal end portion coupled to the distal end portion of the first shaft, the valve sheath also having a distal end portion extending distally past the distal end portion of the first shaft, the distal end portion of the valve sheath defining a distal opening; wherein the valve is in a compressed state and is disposed within the valve sheath, which extends over the entire length of the valve and retains the valve in the compressed state for delivery to the heart through the patient'"'"'s vasculature; wherein when the valve is retained in a compressed state within the sheath, the sheath is in a distal position relative to the first shaft, wherein the second shaft is configured such that rotation of the second shaft relative to the first shaft and the sheath is effective to cause relative longitudinal movement between the sheath and the first shaft and between the sheath and the valve to cause the valve to be deployed outwardly through the distal opening of the sheath for deployment in the heart, and wherein the relative longitudinal movement between the sheath and the first shaft is effective to position the sheath at a proximal position relative to the first shaft in which the distal end of the sheath is proximal to the deployed valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An assembly for delivering a prosthetic, stented heart valve via a patient'"'"'s vasculature, comprising:
-
a prosthetic heart valve comprising a collapsible and expandable annular stent and a collapsible and expandable valve member mounted within the annular stent, the valve member comprising a tricuspid valve configuration formed with pericardial tissue and configured for allowing blood flow in only one direction when in an expanded condition; a first elongated shaft having a distal end portion; a second elongated shaft extending through the first shaft; a valve sheath having a proximal end portion and a distal end portion, the proximal end portion of the sheath coupled to the distal end portion of the first shaft, the distal end portion of the sheath extending distally past the distal end portion of the first shaft, the distal end portion of the valve sheath defining a distal opening; wherein the valve is in a compressed state and is disposed within the valve sheath, which extends over the entire length of the valve and retains the valve in the compressed state; wherein the second shaft is configured such that rotation of the second shaft relative to the first shaft and the sheath is effective to cause the sheath to slide over the first shaft in a proximal direction away from the distal end portion of the first shaft to cause the valve to be deployed outwardly opening of the sheath for deployment in the heart; and a valve-retaining mechanism coupling the valve to the distal end portion of the first shaft; wherein the valve-retaining mechanism comprises a first fork and a second fork, each fork having a plurality of angularly spaced prongs, each prong of the first fork cooperating with a corresponding prong of the second fork to form a releasable connection with the stent of the valve, the second fork being movable relative to the first fork to release each connection formed by the prongs and the stent; wherein the valve-retaining mechanism is configured to retain each connection with the stent of the valve after the valve is deployed from the valve sheath, and the valve-retaining mechanism also being configured such that the second fork is moveable relative to the first to release each connection upon movement longitudinal movement of the second shaft relative to the first shaft. - View Dependent Claims (18, 19, 20, 21)
-
Specification