Distal Tip for a Delivery Catheter
First Claim
1. A delivery catheter for endoluminal delivery of a prosthesis comprising:
- a tubular sheath component having a distal opening;
an elongate inner member at least partially disposed within the sheath component; and
a distal tip attached to the inner member that engages with the distal opening of the sheath component when the delivery catheter is in a delivery configuration and disengages from the distal opening when the delivery catheter is in a deployment configuration, the distal tip having a distally tapered segment and a proximally tapered segment with a shelf segment therebetween,wherein the distal tip shelf segment has an outer diameter that is greater than an inner diameter of the distal opening of the sheath component and is retained by the distal opening in the delivery configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
Distal tips for use with delivery catheters are disclosed that are configured to maintain complete engagement between the distal tip and a distal opening of a sheath component of the delivery catheter so as to prevent separation therebetween and/or to prevent fish-mouthing of a distal leading edge of the sheath component during in vivo use. Distal tips so configured realize one or more of the objectives of safer tracking of the delivery catheter through the vasculature, safe crossing of the delivery catheter through structural components of the vasculature and heart, such as through native valves, and safe removal of the delivery catheter post deployment.
45 Citations
22 Claims
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1. A delivery catheter for endoluminal delivery of a prosthesis comprising:
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a tubular sheath component having a distal opening; an elongate inner member at least partially disposed within the sheath component; and a distal tip attached to the inner member that engages with the distal opening of the sheath component when the delivery catheter is in a delivery configuration and disengages from the distal opening when the delivery catheter is in a deployment configuration, the distal tip having a distally tapered segment and a proximally tapered segment with a shelf segment therebetween, wherein the distal tip shelf segment has an outer diameter that is greater than an inner diameter of the distal opening of the sheath component and is retained by the distal opening in the delivery configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A delivery catheter for endoluminal delivery of a prosthesis comprising:
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a tubular sheath component having a distal opening; an elongate shaft at least partially disposed within the sheath component; and a distal tip attached to the elongate shaft, the distal tip having a distally tapered segment and a proximally tapered segment with a shelf segment therebetween that engages with the distal opening of the sheath component when the delivery catheter is in a delivery configuration and disengages from the distal opening of the sheath component when the delivery catheter is in a deployment configuration, wherein the distal tip shelf segment and the distal opening of the sheath component are magnetically attracted to each other such that the shelf segment is retained within the distal opening in the delivery configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A delivery catheter for endoluminal delivery of a prosthesis comprising:
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a tubular sheath component having a distal opening and distally extending first and second arched portions; an elongate inner shaft at least partially disposed within the sheath component; and a distal tip attached to the inner shaft that engages with the distal opening of the sheath component when the delivery catheter is in a delivery configuration and disengages from the distal opening when the delivery catheter is in a deployment configuration, the distal tip having a distal segment and a proximal segment that are demarcated by a proximally facing bearing surface that forms a circumferential ridge around the distal tip, wherein the circumferential ridge defines distally extending first and second valley portions that receive at least a crown of a corresponding first or second arched portion of the sheath component therein when the distal tip engages with the distal opening of the sheath component in the delivery configuration. - View Dependent Claims (19, 20, 21, 22)
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Specification