| 主权项 |
1. A device for percutaneously deploying a stented prosthetic heart valve, the device comprising:
a distal portion located at the distal end of an axis of the device and configured to selectively engage the stented prosthetic heart valve, wherein the distal portion includes a distal-most tip; a spacing collar proximal to and axially spaced apart from the distal portion from the engaged stented prosthetic heart valve, the spacing collar transitionable from a loaded state to an activated state wherein the spacing collar in loaded state has a radial dimension less than the spacing collar in the activated state; wherein the spacing collar is configured to be longitudinally spaced-apart along the axis and proximal to the engaged stented prosthetic heart valve while in the loaded state and the activated state, and wherein the spacing collar, distal most tip, and the engaged stented prosthetic heart valve are generally, longitudinally immovable with respect to each other along the axis; a plurality of fingers each having a first end coupled to the spacing collar and a second end yieldably urged away from the spacing collar in a radial direction; and an outer collar configured to be movable along the axis relative to the distal portion and the spacing collar such that the outer collar is slidably disposed over the spacing collar to provide the loaded state and is slidably retracted from the spacing collar when in the activated state. |
