Elastic introducer sheath
First Claim
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1. A surgical access system comprising:
- an introducer having a proximal end configured to be externally disposed for providing surgical access to vasculature, a distal end configured to be positioned within vasculature, and an interior lumen that extends between the proximal and distal ends, the interior lumen being configured to expand from a first diameter to a second diameter, the introducer including,a circumferentially continuous layer of a biocompatible material including a fold at the first diameter,a non-circumferentially continuous elastic frame disposed over the circumferentially continuous layer,a non-circumferentially continuous layer of a biocompatible material disposed over the non-circumferentially continuous elastic frame, anda diameter retention element positioned at the distal end of the introducer to retain the distal end of the introducer at the first diameter, wherein the diameter retention element directly secures the non-circumferentially continuous layer to the circumferentially continuous layer.
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Abstract
An elastic percutaneous elastic introducer sheath is disclosed which can locally expand and reduce to accommodate a transcatheter medical device. The elastic introducer sheath includes a non-circumferentially continuous elastic frame, a liner, and a jacket.
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Citations
16 Claims
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1. A surgical access system comprising:
an introducer having a proximal end configured to be externally disposed for providing surgical access to vasculature, a distal end configured to be positioned within vasculature, and an interior lumen that extends between the proximal and distal ends, the interior lumen being configured to expand from a first diameter to a second diameter, the introducer including, a circumferentially continuous layer of a biocompatible material including a fold at the first diameter, a non-circumferentially continuous elastic frame disposed over the circumferentially continuous layer, a non-circumferentially continuous layer of a biocompatible material disposed over the non-circumferentially continuous elastic frame, and a diameter retention element positioned at the distal end of the introducer to retain the distal end of the introducer at the first diameter, wherein the diameter retention element directly secures the non-circumferentially continuous layer to the circumferentially continuous layer. - View Dependent Claims (2, 3, 4, 5)
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6. A surgical access system comprising:
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an introducer having a proximal end configured to be externally disposed for providing surgical access to vasculature, a distal end configured to be positioned within vasculature, and an interior lumen that extends between the proximal and distal ends, the interior lumen being configured to expand from a first diameter to a second diameter, the introducer including, a circumferentially continuous layer of a biocompatible material including a fold at the first diameter, a non-circumferentially continuous elastic frame disposed over the circumferentially continuous layer, a non-circumferentially continuous layer of a biocompatible material disposed over the non-circumferentially continuous elastic frame, the non-circumferentially continuous layer including a first edge portion and a second edge portion such that the first edge portion extends over the second edge portion at the first diameter with a segment of the circumferentially continuous layer that comprises the fold being folded to extend therebetween, and a diameter retention element positioned at the distal end of the introducer to retain the distal end of the introducer at the first diameter, wherein the diameter retention element is a bond between the fold of the circumferentially continuous layer and at least one of the first edge portion and the second edge portion of the non-circumferentially continuous layer at the distal end of the introducer. - View Dependent Claims (7, 8, 9)
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10. A surgical access system comprising:
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an introducer having a proximal end configured to be externally disposed for providing surgical access to vasculature, a distal end configured to be positioned within vasculature, and an interior lumen that extends between the proximal and distal ends, the introducer including an expandable segment configured to expand from a first diameter to a second diameter, the expandable segment being comprised of, a circumferentially continuous inner layer of a biocompatible material, a non-circumferentially continuous elastic frame defining along a length of the expandable segment a longitudinal gap at least when the expandable segment is at the second diameter, and a non-circumferentially continuous outer layer of a biocompatible material, the non-circumferentially continuous outer layer being connected to the non-circumferentially continuous elastic frame and to the circumferentially continuous inner layer to form a wall of the expandable segment, the non-circumferentially continuous outer layer having a longitudinal gap when the expandable segment is in the second diameter and having an overlap region when the expandable segment is in the first diameter; and a diameter retention element disposed at the distal end of the introducer for retaining a distal end of the expandable segment at the first diameter, wherein the diameter retention element directly secures the non-circumferentially continuous outer layer to the circumferentially continuous inner layer. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification