STENT-GRAFT DELIVERY SYSTEM HAVING AN INNER SHAFT COMPONENT WITH A LOADING PAD OR COVERING ON A DISTAL SEGMENT THEREOF FOR STENT RETENTION
First Claim
1. A catheter for delivering a self-expanding stent-graft prosthesis comprising:
- an inner shaft component having a distal segment over which the stent-graft prosthesis is loaded in a compressed delivery configuration, wherein the distal segment has a covering that is intimately disposed thereover, the covering forming a raised outer surface on the distal segment and including at least one protrusion that extends radially outward from the raised outer surface; and
an outer shaft component slidingly disposed over the distal segment of the inner shaft component for holding the stent-graft prosthesis in the compressed delivery configuration,wherein in the compressed delivery configuration the stent-graft prosthesis is disposed over and makes contact with the covering of the distal segment of the inner shaft component, such that at least the at least one protrusion provides sufficient friction to the covering to secure a longitudinal position of the stent-graft prosthesis relative to the inner shaft component.
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Accused Products
Abstract
A catheter for delivering a self-expanding stent-graft prosthesis includes an inner shaft component having a distal segment over which the stent-graft prosthesis is loaded in a compressed delivery configuration. The distal segment has a covering that is intimately disposed thereover. The covering forms a raised outer surface on the distal segment and includes a plurality of protrusions that extend radially outward from the raised outer surface. An outer shaft component is slidingly disposed over the distal segment of the inner shaft component for holding the stent-graft prosthesis in the compressed delivery configuration. In the compressed delivery configuration, the stent-graft prosthesis is disposed over and makes contact with the covering of the distal segment of the inner shaft component such that at least the plurality of protrusions provide sufficient friction to of the covering secure a longitudinal position of the stent-graft prosthesis relative to the inner shaft component.
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Citations
20 Claims
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1. A catheter for delivering a self-expanding stent-graft prosthesis comprising:
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an inner shaft component having a distal segment over which the stent-graft prosthesis is loaded in a compressed delivery configuration, wherein the distal segment has a covering that is intimately disposed thereover, the covering forming a raised outer surface on the distal segment and including at least one protrusion that extends radially outward from the raised outer surface; and an outer shaft component slidingly disposed over the distal segment of the inner shaft component for holding the stent-graft prosthesis in the compressed delivery configuration, wherein in the compressed delivery configuration the stent-graft prosthesis is disposed over and makes contact with the covering of the distal segment of the inner shaft component, such that at least the at least one protrusion provides sufficient friction to the covering to secure a longitudinal position of the stent-graft prosthesis relative to the inner shaft component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A stent-graft delivery system comprising:
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an inner shaft component having a proximal segment and a distal segment, wherein the distal segment has a plurality of protrusions that radially extend away from an outer surface of the inner shaft component; a self-expanding stent-graft prosthesis disposed over the distal segment, the self-expanding stent-graft prosthesis having a radially compressed configuration for delivery within a vasculature and a radially expanded configuration for deployment within a body lumen; and an outer shaft component slidingly disposed over the distal segment of the inner shaft component for holding the self-expanding stent-graft prosthesis in the radially compressed configuration, wherein the plurality of protrusions secure a longitudinal position of the self-expanding stent-graft prosthesis relative to the inner shaft component during loading and deployment of the self-expanding stent-graft prosthesis. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of loading a self-expanding stent-graft prosthesis into a delivery catheter, the method including the steps of:
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radially compressing a self-expanding stent-graft prosthesis onto a loading pad on a distal segment of an inner shaft component of the delivery catheter, the loading pad being intimately disposed over the distal segment and defining a raised outer surface of the distal segment and a plurality of protrusions that extend radially away from the raised outer surface; positioning the inner shaft component with the self-expanding stent-graft prosthesis radially compressed thereon within a lumen of an outer shaft component, wherein at least the plurality of protrusions secure a longitudinal position of the self-expanding stent-graft prosthesis relative to the inner shaft component such that the self-expanding stent-graft prosthesis does not move relative to the inner shaft component while the inner shaft component is being positioned within the lumen of the outer shaft component. - View Dependent Claims (20)
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Specification