Non-thrombogenic stent jacket
First Claim
1. A stent assembly for maintaining the patency of a body lumen comprising an expandable stent with a cylindrical jacket formed of biocompatible, non-thrombogenic material, the cylindrical jacket comprising a thinned layer of pericardium having a cut surface formed by removal of an outer layer of the pericardium, wherein the cylindrical jacket is serous pericardium separated from the outer layer of pericardium.
3 Assignments
0 Petitions
Accused Products
Abstract
A jacketed stent assembly comprising a tubular, expandable stent, preferably having a metallic framework, jacketed with a cylinder of biocompatible, non-thrombogenic expandable material, such as heterologous tissue, which, in a preferred embodiment, contains a therapeutic or diagnostic agent. In a preferred embodiment, the jacket of the expandable stent is formed of bovine or porcine pericardial tissue. A delivery catheter having an expandable member on its distal extremity may be used to deliver the stent assembly to a desired region in a lumen of a patient. The jacketed stent is expanded to be seated within the body lumen. Self-expanding jacketed stents are also contemplated
155 Citations
32 Claims
- 1. A stent assembly for maintaining the patency of a body lumen comprising an expandable stent with a cylindrical jacket formed of biocompatible, non-thrombogenic material, the cylindrical jacket comprising a thinned layer of pericardium having a cut surface formed by removal of an outer layer of the pericardium, wherein the cylindrical jacket is serous pericardium separated from the outer layer of pericardium.
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8. A method for maintaining the patency of a body lumen comprising the steps of:
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a) mounting on a delivery catheter a stent assembly comprising a tubular expandable stent with a cylindrical jacket formed of biocompatible, non-thrombogenic expandable material, the cylindrical jacket comprising a thinned layer of pericardium having a cut surface formed by removal of an outer layer of the pericardium, wherein the cylindrical jacket is serous pericardium separated from the outer layer of pericardium;
b) advancing the delivery catheter through the body lumen until the stent assembly is positioned at a desired location;
c) expanding the stent assembly to anchor it within the body lumen; and
d) withdrawing the delivery catheter.
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- 9. A cylindrical jacket configured to fit over a portion of an intraluminal stent comprising a thinned layer of pericardium having a cut surface formed by removal of an outer layer of the pericardium, wherein the cylindrical jacket is serous pericardium separated from the outer layer of pericardium.
- 19. An expandable jacketed stent comprising a metallic tubular member configured to expand from a first circumference to a second circumference, and a jacket formed of heterologous tissue on an outer surface of the stert in a folded configuration configured to unfold as the stent expands to the second circumference, wherein the jacket has a circumference on the unexpanded stent larger than the first circumference of the stent, and a circumference on the expanded stent about equal to the second circumference of the stent.
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20. A method of treating a patient, comprising:
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a) providing an elongated delivery catheter having an expandable member on a distal extremity thereof;
b) mounting onto the expandable member on the distal extremity of the delivery catheter an expandable stent configured to expand from a first circumference to a second expanded circumference and having a cylindrical jacket formed of biocompatible, non-thrombogenic expandable material on an outer surface of the stent in a folded configuration having at least one wing configured to unfold as the stent expands to the second circumference, wherein the jacket has a circumference on the unexpanded stent larger than the first circumference of the stent, and a circumference on the expanded stent about equal to the second expanded circumference of the stent;
c) advancing at least the distal extremity of the catheter within a body lumen of the patient until the jacketed stent is disposed at a desired location within the body lumen;
d) expanding the expandable member on the distal extremity of the catheter to expand the jacketed stent mounted thereon and unfold the jacket wing as the stent expands to the second circumference, and fix the expanded jacketed stent within the body lumen; and
e) contracting the expanded expandable member so the elongated delivery catheter can be removed from the patient. - View Dependent Claims (30)
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32. A method of treating a patient, comprising:
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a) providing an elongated delivery catheter having an expandable member on a distal extremity thereof;
b) mounting onto the expandable member on the distal extremity of the delivery catheter an expandable stent configured to expand from a first circumference to a second expanded circumference and having a cylindrical jacket formed of biocompatible, non-thrombogenic expandable material on an outer surface of the stent, wherein the jacket on the unexpanded stent has a circumference larger than the first circumference of the stent, and about equal to the second expanded circumference of the stent;
c) removing fluid out of the jacket after (b), and thereafter advancing at least the distal extremity of the catheter within a body lumen of the patient until the jacketed stent is disposed at a desired location within the body lumen;
d) expanding the expandable member on the distal extremity of the catheter to expand the jacketed stent mounted thereon and fix the expanded jacketed stent within the body lumen; and
e) contracting the expanded expandable member so the elongated delivery catheter can be removed from the patient.
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Specification