Stent delivery system
First Claim
1. An apparatus for delivery and deployment of an expandable stent within a vessel, the apparatus comprising:
- a) a catheter having a proximal end, a distal end and a catheter shaft;
b) an expandable stent, expandable from a delivery diameter to a deployment diameter, the stent being coaxially mounted on the catheter; and
c) securement means coaxially mounted on the catheter near its distal end, remote from the proximal end of the catheter, and over the stent, said securement means comprising;
i) a securement sheath having a proximal end, a distal end, an exterior surface and an interior surface, said securement sheath being constructed and arranged for proximal retraction along the catheter shaft to expose the stent, the securement sheath having a plurality of flexibility enhancing elements; and
ii) a distal cuff having a proximal end, a distal end, an exterior surface and an interior surface, said distal cuff being mounted near the distal end of the stent and being constructed and arranged to engage the securement sheath at the distal end of the securement sheath until retraction thereof.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides an apparatus for delivery and deployment of an expandable stent within a vessel. The apparatus comprises a catheter having a proximal end, a distal end and a catheter shaft, an expandable stent coaxially mounted on the catheter near the distal end of the catheter and a securement apparatus coaxially mounted on the catheter near its distal end and over the stent. The securement apparatus comprises a securement sleeve having a proximal end, a distal end, an exterior surface and an interior surface. The securement sleeve is constructed and arranged for proximal advancement along the catheter shaft. The present invention also includes a distal cuff having a proximal end, a distal end, an exterior surface and an interior surface. The distal cuff is mounted near the distal end of the catheter and is constructed and arranged to closely surround the exterior surface of the securement sleeve at the distal end of the securement sleeve until proximal advancement thereof and subsequent deployment of the stent.
146 Citations
44 Claims
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1. An apparatus for delivery and deployment of an expandable stent within a vessel, the apparatus comprising:
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a) a catheter having a proximal end, a distal end and a catheter shaft;
b) an expandable stent, expandable from a delivery diameter to a deployment diameter, the stent being coaxially mounted on the catheter; and
c) securement means coaxially mounted on the catheter near its distal end, remote from the proximal end of the catheter, and over the stent, said securement means comprising;
i) a securement sheath having a proximal end, a distal end, an exterior surface and an interior surface, said securement sheath being constructed and arranged for proximal retraction along the catheter shaft to expose the stent, the securement sheath having a plurality of flexibility enhancing elements; and
ii) a distal cuff having a proximal end, a distal end, an exterior surface and an interior surface, said distal cuff being mounted near the distal end of the stent and being constructed and arranged to engage the securement sheath at the distal end of the securement sheath until retraction thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for delivery and deployment of an expandable stent within a vessel, the apparatus comprising:
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a) a catheter having a proximal end portion, a middle portion, a distal end portion and a catheter shaft;
b) an expandable stent, expandable from a delivery diameter to a deployment diameter, the stent being coaxially mounted about the catheter at the distal end portion of the catheter, and c) securement means coaxially mounted on the catheter at its distal end portion, distal the middle portion, and about the stent, said securement means comprising;
i) a securement sheath having a plurality of flexibility enhancing elements a proximal end, a distal end, an exterior surface and an interior surface, said securement sheath being mounted on the catheter shaft and being constructed and arranged for retraction along the catheter shaft, the securement sheath having a wall thickness of about 0.005 inches or less, and ii) a distal cuff having a proximal end, a distal end, an exterior surface and an interior surface, said distal cuff being mounted near the distal end of the catheter and being constructed and arranged to closely and releasably engage the securement sheath at the distal end of the securement sheath until retraction thereof and subsequent deployment of the stent. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 31. In a stent delivery catheter, the catheter having a proximal end, a middle portion and a distal end, the improvement comprising a stent covering sheath having a proximal and distal end, the proximal end of the sheath being slidably gripped to the catheter, distal from the middle portion of the catheter, and a cuff releasably covering the distal end of the sheath, the cuff being attached to the catheter, the sheath having a flexibility enhancer.
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33. An apparatus for delivery and deployment of an expandable stent within a vessel, the apparatus comprising:
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a) a catheter having a proximal end, a middle portion, a distal end and a catheter shaft;
b) an expandable stent, expandable from a delivery diameter to a deployment diameter, the stent being coaxially mounted on the catheter;
c) securement means coaxially mounted on the catheter near its distal end, distal the middle portion, and over the stent, said securement means comprising;
i) a securement sheath having a proximal end, a distal end, an exterior surface and an interior surface, said securement sheath being slidably mounted on the catheter shaft and being constructed and arranged for proximal retraction along the catheter shaft to expose the stent, the securement sheath having a plurality of flexibility enhancing elements; and
ii) a distal cuff having a proximal end, a distal end, an exterior surface and an interior surface, said distal cuff being mounted near the distal end of the stent and being constructed and arranged to engage the securement sheath at the distal end of the securement sheath until retraction thereof. - View Dependent Claims (34, 35, 36)
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37. An apparatus for delivery and deployment of an expandable stent within a vessel, the apparatus comprising:
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a) a catheter having a proximal end, a middle portion, a distal end and a catheter shaft;
b) an expandable stent, expandable from a delivery diameter to a deployment diameter, the stent being coaxially mounted on the distal end of the catheter for expansion thereof;
d) securement means coaxially mounted on the catheter near its distal end, distal the middle portion, and over the stent, said securement means comprising;
i) a securement sheath having a proximal end, a distal end, an exterior surface and an interior surface, said securement sheath being slidably mounted on the catheter and being constructed and arranged for proximal retraction along the catheter to expose the stent, the securement sheath having a plurality of flexibility enhancing elements. - View Dependent Claims (38, 39, 40, 41)
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- 42. In a stent delivery catheter, the catheter having a proximal end, a middle portion and a distal end, the improvement comprising a stent covering sheath having a proximal and distal end, the proximal end of the sheath being slidably gripped to the catheter, distal from the middle portion of the catheter, the sheath having a flexibility enhancer.
Specification