Elastic introducer sheath
First Claim
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1. An elastic surgical access device comprising:
- a circumferentially continuous layer of a biocompatible material, the circumferentially continuous layer having an overlap region with at least one fold when the elastic surgical access device is in a collapsed configuration;
an elastic frame; and
a non-circumferentially continuous layer of a biocompatible material connected to the elastic frame and to the circumferentially continuous layer, the non-circumferentially continuous layer having an overlap region when the elastic surgical access device is in the collapsed configuration and a longitudinal gap when the elastic surgical access device is in an expanded configuration,wherein the respective overlap regions of the circumferentially continuous layer and the non-circumferentially continuous layer are substantially co-extensive when the elastic surgical access device is in the collapsed configuration, andwherein the at least one fold of the overlap region of the circumferentially continuous layer flattens to extend across the longitudinal gap of the non-circumferentially continuous layer when the elastic surgical access device is in the expanded configuration.
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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.
100 Citations
20 Claims
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1. An elastic surgical access device comprising:
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a circumferentially continuous layer of a biocompatible material, the circumferentially continuous layer having an overlap region with at least one fold when the elastic surgical access device is in a collapsed configuration; an elastic frame; and a non-circumferentially continuous layer of a biocompatible material connected to the elastic frame and to the circumferentially continuous layer, the non-circumferentially continuous layer having an overlap region when the elastic surgical access device is in the collapsed configuration and a longitudinal gap when the elastic surgical access device is in an expanded configuration, wherein the respective overlap regions of the circumferentially continuous layer and the non-circumferentially continuous layer are substantially co-extensive when the elastic surgical access device is in the collapsed configuration, and wherein the at least one fold of the overlap region of the circumferentially continuous layer flattens to extend across the longitudinal gap of the non-circumferentially continuous layer when the elastic surgical access device is in the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An elastic surgical access device comprising:
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a circumferentially continuous layer of a biocompatible material, the circumferentially continuous layer having an overlap region with at least one fold when the elastic surgical access device is in a collapsed configuration; an elastic frame that includes a spine and a plurality of projections extending from the spine that are curved to form a C-shape in a radial direction, the plurality of projections being axially spaced apart along the length of the elastic surgical access device; and a non-circumferentially continuous layer of a biocompatible material connected to the elastic frame and to the circumferentially continuous layer, the non-circumferentially continuous layer having a longitudinal gap when the elastic surgical access device is in an expanded configuration, wherein the at least one fold of the overlap region of the circumferentially continuous layer flattens to extend across the longitudinal gap of the non-circumferentially continuous layer when the elastic surgical access device is in the expanded configuration, and wherein each of the plurality of projections includes a hook projection at a first end of the C-shape and an eye projection at a second end of the C-shape, each hook projection configured to engage a respective eye projection to limit expansion of the elastic surgical access device.
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15. A locally expandable surgical access device comprising:
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a non-circumferentially continuous layer of a biocompatible material including a longitudinal gap along a length of the locally expandable surgical access device; a circumferentially continuous layer of a biocompatible material connected to the non-circumferentially continuous layer; and an elastic frame extending only across the longitudinal gap and connected to the non-circumferentially continuous layer on each side of the longitudinal gap, wherein the elastic frame includes a plurality of wavy segments that are axially spaced apart and are configured to permit expansion of the locally expandable surgical access device from a collapsed configuration to an expanded configuration. - View Dependent Claims (16, 17, 18, 19)
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20. An elastic surgical access device comprising:
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a circumferentially continuous layer of a biocompatible material, the circumferentially continuous layer having an overlap region with at least one fold when the elastic surgical access device is in a collapsed configuration; a non-circumferentially continuous layer of a biocompatible material connected to the circumferentially continuous layer, the non-circumferentially continuous layer having a longitudinal gap when the elastic surgical access device is in an expanded configuration, wherein the at least one fold of the overlap region of the circumferentially continuous layer flattens to extend across the longitudinal gap of the non-circumferentially continuous layer when the elastic surgical access device is in the expanded configuration; and a segmented elastic frame disposed between the circumferentially continuous layer and the non-circumferentially continuous layer, the segmented elastic frame including a plurality of distinct projections, not joined to each other, that are axially spaced apart along a length of the elastic surgical access device.
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Specification