INTEGRATED HEART VALVE DELIVERY SYSTEM
First Claim
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1. An apparatus for delivering a prosthetic valve through the vasculature of a patient comprising:
- a balloon catheter comprising an elongated shaft and a balloon connected to a distal end portion of the shaft, the balloon being adapted to carry the valve in a crimped state and being inflatable to deploy the valve at an implantation site in the patient'"'"'s body;
a guide catheter comprising an elongated shaft extending over the balloon catheter shaft, the shaft of the guide catheter comprising a steerable section, the guide catheter further comprising an adjustment mechanism operatively coupled to the steerable section, the adjustment mechanism being configured to adjust the curvature of the steerable section and the portion of the balloon catheter shaft extending through the steerable section; and
a nose catheter comprising an elongated shaft extending through the balloon catheter shaft and a nose piece connected to a distal end of the nose catheter shaft, the nose piece having an internal bore adapted to receive at least a distal end portion of the balloon in a deflated state during delivery of the valve;
wherein the balloon catheter, the guide catheter, and the nose catheter are configured to move longitudinally relative to each other.
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Accused Products
Abstract
Embodiments of the present disclosure provide a delivery apparatus for delivering a prosthetic heart valve to a native valve site via the human vasculature. The delivery apparatus is particularly well-suited for advancing a prosthetic valve through the aorta (i.e., in a retrograde approach) for replacing a stenotic aortic valve.
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Citations
22 Claims
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1. An apparatus for delivering a prosthetic valve through the vasculature of a patient comprising:
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a balloon catheter comprising an elongated shaft and a balloon connected to a distal end portion of the shaft, the balloon being adapted to carry the valve in a crimped state and being inflatable to deploy the valve at an implantation site in the patient'"'"'s body; a guide catheter comprising an elongated shaft extending over the balloon catheter shaft, the shaft of the guide catheter comprising a steerable section, the guide catheter further comprising an adjustment mechanism operatively coupled to the steerable section, the adjustment mechanism being configured to adjust the curvature of the steerable section and the portion of the balloon catheter shaft extending through the steerable section; and a nose catheter comprising an elongated shaft extending through the balloon catheter shaft and a nose piece connected to a distal end of the nose catheter shaft, the nose piece having an internal bore adapted to receive at least a distal end portion of the balloon in a deflated state during delivery of the valve; wherein the balloon catheter, the guide catheter, and the nose catheter are configured to move longitudinally relative to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of implanting a prosthetic valve at an implantation site in a patient'"'"'s body, the method comprising:
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placing the valve on an inflatable balloon of a balloon catheter of a delivery apparatus; inserting at least a distal end portion of the balloon in a nose piece of a nose catheter of the delivery apparatus; inserting the balloon catheter and the nose catheter into the body and advancing the same through the patient'"'"'s vasculature; moving the nose catheter distally relative to the balloon catheter to uncover the portion of the balloon inside the nose piece; and deploying the valve at the implantation site by inflating the balloon. - View Dependent Claims (13, 14, 15, 16)
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17. A method of implanting a prosthetic valve at an implantation site in a patient'"'"'s body, the method comprising:
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placing the valve in a crimped state on the distal end portion of an elongated delivery apparatus; advancing the delivery apparatus through the patient'"'"'s vasculature; subsequent to the act of advancing the delivery apparatus, moving the crimped valve onto an inflatable balloon on the distal end portion of the delivery apparatus; and deploying the valve at the implantation site by inflating the balloon. - View Dependent Claims (18, 19)
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20. An introducer sheath comprising:
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an elongated tubular sleeve having a lumen and adapted to be inserted into a patient'"'"'s vasculature; a seal housing comprising an inner bore in communication with the lumen of the sleeve and one or more sealing valves housed in the bore; and an end piece coupled to the sealing housing opposite the sleeve and comprising a loader tube extending into the bore, the end piece being moveable along a length of the seal housing to move the loader tube from a first position spaced from the one or more sealing valves to a second position wherein the loader tube extends through the sealing valves.
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21. The introducer sheath of claim 47, wherein the end piece is rotatable relative to the sealing housing to move the end piece along said length of the seal housing.
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22. The introducer sheath of claim 47, wherein the end piece has an opening and houses a seal adjacent the opening to sealingly engage an endovascular delivery apparatus through the opening and the seal.
Specification