Endovascular delivery system having textile component for implant restraint and delivery
First Claim
1. A stent-graft delivery system comprising:
- an outer tubular shaft having a proximal shaft segment attached to a distal shaft segment having a tubular textile component consisting of a fabric or cloth for flexibility, a distal end of the proximal shaft segment being attached to a proximal end of the tubular textile component by an attachment mechanism, wherein the proximal shaft segment is of a polymeric tubing that has a substantially greater resistance to bending than the tubular textile component and wherein the tubular textile component is non-compliant;
an inner shaft that extends through an entire length of the outer tubular shaft;
a distal tip component attached to the inner shaft,wherein a hub component is attached to a distal segment of the tubular textile component to provide radial support thereto, the hub component having an inner diameter that is sized to receive a proximal end of the distal tip component, andwherein the hub component includes a polymeric inner support tube and a polymeric outer support tube between which the distal segment of the tubular textile component is disposed; and
a self-expanding stent-graft positioned around a distal portion of the inner shaft and constrained by the tubular textile component in a compressed delivery configuration, wherein retraction of the outer tubular shaft proximally slides the tubular textile component over the stent-graft to expose and deploy the stent-graft.
1 Assignment
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Accused Products
Abstract
A stent-graft delivery system is disclosed having an outer tubular shaft or sheath with a relatively stiff proximal segment and a distal segment formed from a tubular textile component. The proximal segment being formed from a polymeric tubing and having a distal end attached to a proximal end of the tubular textile component. During tracking of the delivery system through the vasculature, a self-expanding stent-graft is constrained by and within the tubular textile component in a compressed delivery configuration. Upon positioning at a treatment site, such as an aneurysm, retraction of the outer tubular shaft proximally slides the tubular textile component over the stent-graft to expose and deploy the stent-graft. The tubular textile component may be made from strands of one or more biocompatible materials that have been formed into a textile by weaving, braiding, knitting, crocheting, felting or a combination thereof.
13 Citations
12 Claims
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1. A stent-graft delivery system comprising:
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an outer tubular shaft having a proximal shaft segment attached to a distal shaft segment having a tubular textile component consisting of a fabric or cloth for flexibility, a distal end of the proximal shaft segment being attached to a proximal end of the tubular textile component by an attachment mechanism, wherein the proximal shaft segment is of a polymeric tubing that has a substantially greater resistance to bending than the tubular textile component and wherein the tubular textile component is non-compliant; an inner shaft that extends through an entire length of the outer tubular shaft; a distal tip component attached to the inner shaft, wherein a hub component is attached to a distal segment of the tubular textile component to provide radial support thereto, the hub component having an inner diameter that is sized to receive a proximal end of the distal tip component, and wherein the hub component includes a polymeric inner support tube and a polymeric outer support tube between which the distal segment of the tubular textile component is disposed; and a self-expanding stent-graft positioned around a distal portion of the inner shaft and constrained by the tubular textile component in a compressed delivery configuration, wherein retraction of the outer tubular shaft proximally slides the tubular textile component over the stent-graft to expose and deploy the stent-graft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stent-graft delivery system comprising:
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an outer tubular shaft having a proximal shaft segment and a distal shaft segment having a tubular textile component consisting of a fabric or cloth, a distal end of the proximal shaft segment being thermally bonded to a proximal end of the tubular textile component, wherein the proximal shaft segment is of a polymeric tubing that has a substantially greater resistance to bending than the tubular textile component and the outer tubular shaft having a substantially constant outer diameter from a proximal end to a distal end thereof; an inner shaft that extends through an entire length of the outer tubular shaft; a distal tip component attached to the inner shaft, wherein a hub component is attached to a distal segment of the tubular textile component to provide radial support thereto, the hub component having an inner diameter that is sized to receive a proximal end of the distal tip component, and wherein the hub component includes a polymeric inner support tube and a polymeric outer support tube between which the distal segment of the tubular textile component is disposed; and a self-expanding stent-graft positioned around a distal portion of the inner shaft and constrained by the tubular textile component in a compressed delivery configuration, wherein retraction of the outer tubular shaft proximally slides the tubular textile component over the stent-graft to expose and deploy the stent-graft. - View Dependent Claims (9, 10, 11, 12)
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Specification