Expandable stent and delivery system
First Claim
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1. An expandable stent and delivery system comprising:
- an elongated core member having proximal and distal sections;
a proximal member disposed about the distal section of said core member;
an intermediate member disposed about the distal section of said core member and generally positioned on said core member distally from said proximal member and spaced apart from said proximal member to form a gap having a longitudinal length;
a positioning marker disposed about the distal section of said core member and generally positioned distal to said intermediate member and having a longitudinal length;
an expandable stent having a longitudinal axis, said stent including an anchor member attached to said stent and taking the form of an extension having a longitudinal length less than the longitudinal length of said gap and inwardly projected in a direction toward the longitudinal axis of said stent, said stent mounted on at least one member and positioned such that said anchor member interlocks within said gap; and
, a deployment catheter having a lumen extending therethrough and disposed about said core member such that said deployment catheter constrains said expandable stent about at least one member causing said anchor member to be maintained in said gap and thereby causing said stent to be interlocked onto said core member.
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Abstract
An expandable stent and delivery system is provided for enhancing luminal dilation of a blood vessel. The delivery system includes proximal, intermediate and distal cylindrical members disposed on and spaced apart along an elongated core member such that first and second gaps are formed. The expandable stent includes proximal and distal anchor members which align with the gaps. The expandable stent is mounted on the intermediate cylindrical member, and the anchor members are disposed within the gaps thereby locking the stent onto the core member.
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Citations
20 Claims
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1. An expandable stent and delivery system comprising:
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an elongated core member having proximal and distal sections;
a proximal member disposed about the distal section of said core member;
an intermediate member disposed about the distal section of said core member and generally positioned on said core member distally from said proximal member and spaced apart from said proximal member to form a gap having a longitudinal length;
a positioning marker disposed about the distal section of said core member and generally positioned distal to said intermediate member and having a longitudinal length;
an expandable stent having a longitudinal axis, said stent including an anchor member attached to said stent and taking the form of an extension having a longitudinal length less than the longitudinal length of said gap and inwardly projected in a direction toward the longitudinal axis of said stent, said stent mounted on at least one member and positioned such that said anchor member interlocks within said gap; and
,a deployment catheter having a lumen extending therethrough and disposed about said core member such that said deployment catheter constrains said expandable stent about at least one member causing said anchor member to be maintained in said gap and thereby causing said stent to be interlocked onto said core member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An expandable stent and delivery system comprising:
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an elongated core member having proximal and distal sections;
a plurality of members disposed about the distal section of said core member and spaced apart to form a plurality of gaps each having a longitudinal length;
a positioning marker disposed about the distal section of said core member and having a longitudinal length;
an expandable stent having a longitudinal axis, said stent including a plurality of anchor members attached to said stent and taking the form of extensions having a longitudinal length less than the longitudinal length of said gaps and inwardly projected in a direction toward the longitudinal axis of said stent, said stent mounted on said positioning marker and positioned such that at least one of said anchor members interlocks within at least one of said gaps; and
,a deployment catheter having a lumen extending therethrough and disposed about said core member such that said deployment catheter constrains said expandable stent about said positioning marker causing said anchor members to be maintained in at least one of said gaps and thereby causing said stent to be interlocked onto said core member. - View Dependent Claims (8, 9, 10, 11)
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12. A method for deploying an expandable stent within a blood vessel to enhance luminal dilation of the blood vessel, the method comprising the steps of:
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providing an expandable stent and delivery system, said expandable stent mounted on at least one positioning marker along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;
inserting said expandable stent and delivery system into a blood vessel;
positioning said expandable stent adjacent to a blockage area within said vessel;
moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;
further moving said deployment catheter proximally allowing said stent to fully deploy causing said vessel to increase luminal dilation; and
,removing said delivery system from said blood vessel. - View Dependent Claims (13, 14)
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15. A method for deploying an expandable stent within a blood vessel to treat an aneurysm, the method comprising the steps of:
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providing an expandable stent and delivery system, said expandable stent mounted on at least one positioning marker along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;
inserting said expandable stent and delivery system into a blood vessel;
positioning said expandable stent adjacent to an aneurysm;
moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;
further moving said deployment catheter proximally allowing said stent to fully deploy causing said aneurysm to be covered by said stent; and
,removing said delivery system from said blood vessel. - View Dependent Claims (16, 17)
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18. A method for resheathing an expandable stent within a blood vessel, said method comprising the steps of:
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providing an expandable stent and delivery system, said expandable stent mounted on at least one positioning marker along a core member of said delivery system, said stent having at least one anchor member interlocked within at least one gap along said core member, said gap formed by spaces between a plurality of cylindrical members disposed on said core member, said delivery system including a deployment catheter disposed about said stent maintaining said stent in a constrained configuration;
inserting said expandable stent and delivery system into a blood vessel;
positioning said expandable stent adjacent to a blockage area within said vessel;
moving said deployment catheter proximally allowing said stent to begin expanding within said vessel;
moving said deployment catheter distally forcing said stent back onto said delivery system; and
,relocating said expandable stent and delivery system. - View Dependent Claims (19, 20)
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Specification