PROSTHETIC HEART VALVE DELIVERY APPARATUS
First Claim
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1. A delivery apparatus for implanting a prosthetic valve, comprising:
- a first elongated shaft having a proximal end portion and a distal end portion;
a second elongated shaft extending through the first shaft and having a proximal end portion and a distal end portion, the second shaft being rotatable relative to the first shaft but fixed against axial movement relative to the first shaft, the distal end portion of the second shaft having an outer surface comprising external threads or grooves;
a sheath retaining ring disposed on the threads or grooves of the second shaft and fixed against rotational movement relative to the distal end portion of the second shaft; and
a delivery sheath configured to receive and retain a prosthetic valve in a compressed delivery state, the delivery sheath being connected to the sheath retaining ring;
wherein the second shaft is configured to be rotatable relative to the first shaft such that rotation of the second shaft causes the sheath retaining ring to move axially along the threads or grooves, thereby moving the sheath axially relative to the first and second shafts to deploy a prosthetic valve contained within the sheath.
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Abstract
Certain embodiments of the present disclosure provide a prosthetic valve (e.g., prosthetic heart valve) and a valve delivery apparatus for delivery of the prosthetic valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic heart valve through the aorta (i.e., in a retrograde approach) for replacing a diseased native aortic valve. The delivery apparatus in particular embodiments is configured to deploy a prosthetic valve from a delivery sheath in a precise and controlled manner at the target location within the body.
238 Citations
26 Claims
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1. A delivery apparatus for implanting a prosthetic valve, comprising:
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a first elongated shaft having a proximal end portion and a distal end portion; a second elongated shaft extending through the first shaft and having a proximal end portion and a distal end portion, the second shaft being rotatable relative to the first shaft but fixed against axial movement relative to the first shaft, the distal end portion of the second shaft having an outer surface comprising external threads or grooves; a sheath retaining ring disposed on the threads or grooves of the second shaft and fixed against rotational movement relative to the distal end portion of the second shaft; and a delivery sheath configured to receive and retain a prosthetic valve in a compressed delivery state, the delivery sheath being connected to the sheath retaining ring; wherein the second shaft is configured to be rotatable relative to the first shaft such that rotation of the second shaft causes the sheath retaining ring to move axially along the threads or grooves, thereby moving the sheath axially relative to the first and second shafts to deploy a prosthetic valve contained within the sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A delivery apparatus for implanting a prosthetic valve, comprising:
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a first elongated shaft having a proximal end portion and a distal end portion; a second elongated shaft extending through the first shaft and having a proximal end portion and a distal end portion, the second shaft being rotatable relative to the first shaft but fixed against axial movement relative to the first shaft; a third elongated shaft extending through the second shaft and having a proximal end portion and a distal end portion; a delivery sheath configured to receive and retain a prosthetic valve in a compressed delivery state, the delivery sheath being coupled to the second shaft; and a valve-retaining mechanism comprising first and second components on the distal end portion of the third shaft and the distal end portion of the first shaft, respectively, the first and second components cooperating to form a releasable connection with a stent of the prosthetic valve; wherein the second shaft is configured to be rotatable relative to the first shaft such that rotation of the second shaft causes the sheath to move axially relative to the first, second and third shafts to deploy a prosthetic valve contained within the sheath; wherein the valve-retaining mechanism prevents axial and rotational movement of the prosthetic valve relative to the first and third shafts as the second shaft is rotated to move the sheath axially to deploy the prosthetic valve. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification