Stent delivery system having stent securement apparatus
First Claim
1. A stent delivery system for delivery and deployment of a stent within a vessel, comprising:
- a catheter, the catheter comprising a proximal portion, a distal portion and an inner shaft, the inner shaft having a distal portion;
a first balloon mounted about the inner shaft, the first balloon having a collapsed state, an expanded state, a distal portion terminating at a distal end, a proximal portion terminating at a proximal end and a central portion positioned between the distal portion and the proximal portion, the central, distal and proximal portions defining a fluid chamber, wherein the fluid chamber is common to the central, distal and proximal portions, and each having an inner diameter when the first balloon is in the expanded state, wherein, when the first balloon is in the expanded state, the inner diameter of the central portion is less than the inner diameter of either the distal portion or the proximal portion;
a second balloon mounted on the catheter, the second balloon being positioned about the first balloon, such that the entirety of the first balloon is within the second balloon, and having a collapsed state and an expanded state, the second balloon being between the first balloon and the stent and independently expandable relative to the first balloon, wherein the second balloon is not permeable by liquid; and
a stent mounted on the catheter and positioned about the first balloon.
1 Assignment
0 Petitions
Accused Products
Abstract
A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation means coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation means; and a securement component coaxially mounted on the catheter, axially within the expandable inflation means, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site.
110 Citations
22 Claims
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1. A stent delivery system for delivery and deployment of a stent within a vessel, comprising:
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a catheter, the catheter comprising a proximal portion, a distal portion and an inner shaft, the inner shaft having a distal portion; a first balloon mounted about the inner shaft, the first balloon having a collapsed state, an expanded state, a distal portion terminating at a distal end, a proximal portion terminating at a proximal end and a central portion positioned between the distal portion and the proximal portion, the central, distal and proximal portions defining a fluid chamber, wherein the fluid chamber is common to the central, distal and proximal portions, and each having an inner diameter when the first balloon is in the expanded state, wherein, when the first balloon is in the expanded state, the inner diameter of the central portion is less than the inner diameter of either the distal portion or the proximal portion; a second balloon mounted on the catheter, the second balloon being positioned about the first balloon, such that the entirety of the first balloon is within the second balloon, and having a collapsed state and an expanded state, the second balloon being between the first balloon and the stent and independently expandable relative to the first balloon, wherein the second balloon is not permeable by liquid; and a stent mounted on the catheter and positioned about the first balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system for delivery and deployment of a stent within a vessel, comprising:
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a catheter, the catheter comprising a proximal portion, a distal portion and an inner shaft, the inner shaft having a distal portion; a first balloon mounted about the inner shaft, the first balloon having a collapsed state, an expanded state, a distal portion terminating at a distal end, a proximal portion terminating at a proximal end and a central portion positioned between the distal portion and the proximal portion, the central, distal and proximal portions defining a fluid chamber, wherein the fluid chamber is common to the central, distal and proximal portions, and each having an outer diameter and an inner diameter when the first balloon is in the expanded state, wherein, when the first balloon is in the expanded state, the outer diameter of the central portion is less than the outer diameter of either the distal portion or the proximal portion; a second balloon mounted on the catheter, the second balloon being positioned about the first balloon, such that the entirety of the first balloon is within the second balloon, and having a collapsed state and an expanded state, the second balloon being between the first balloon and the stent and independently expandable relative to the first balloon, wherein the second balloon is not permeable by liquid; and a stent mounted on the catheter and positioned about the first balloon. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A stent delivery system for delivery and deployment of a stent within a vessel, comprising:
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a catheter, the catheter comprising a proximal portion, a distal portion and an inner shaft, the inner shaft having a distal portion; a first balloon mounted about the inner shaft, the first balloon having a collapsed state, an expanded state, a distal portion terminating at a distal end, a proximal portion terminating at a proximal end and a central portion positioned between the distal portion and the proximal portion, the central, distal and proximal portions defining a fluid chamber, wherein the fluid chamber is common to the central, distal and proximal portions, and each having an inner diameter and an outer diameter when the first balloon is in the expanded state, a second balloon mounted on the catheter, the second balloon being positioned about the first balloon and having a collapsed state and an expanded state, the second balloon being between the first balloon and the stent and independently expandable relative to the first balloon, wherein the second balloon is not permeable by liquid, the first and second balloons sized such that, when the first and second balloons are both in their expanded state, the first balloon and the second balloon are not in contact with one another, a stent mounted on the catheter and positioned about the first balloon; and wherein, when the first balloon is in the expanded state; the inner diameter of the central portion is less than the inner diameter of either the distal portion or the proximal portion; and
/orthe outer diameter of the central portion is less than the outer diameter of either the distal portion or the proximal portion.
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Specification