Stent and stent delivery device
First Claim
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1. A stent delivery device comprising:
- a multi-lumen catheter containing a first lumen and a second lumen;
the first lumen providing a passage way for a guidewire;
the second lumen housing a core member;
the core member having a proximal end and a distal end where the core member is connected to a pusher on the proximal end and an anchor member on the distal end;
the anchor member releasably connected to a stent for inserting or retracting the stent, where pushing or pulling the pusher causes the anchor member to move while the multi-lumen catheter remains in a fixed position;
said anchor member comprising a body that forms a distally-facing backstop surface and a plurality of radially oriented posts fixed distally of said distally-facing backstop surface so as to create a gap with said body;
said anchor member having an elongated depression positioned on an outer surface of said body and in which said core member is fixed within.
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Abstract
In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.
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Citations
11 Claims
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1. A stent delivery device comprising:
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a multi-lumen catheter containing a first lumen and a second lumen; the first lumen providing a passage way for a guidewire; the second lumen housing a core member; the core member having a proximal end and a distal end where the core member is connected to a pusher on the proximal end and an anchor member on the distal end; the anchor member releasably connected to a stent for inserting or retracting the stent, where pushing or pulling the pusher causes the anchor member to move while the multi-lumen catheter remains in a fixed position;
said anchor member comprising a body that forms a distally-facing backstop surface and a plurality of radially oriented posts fixed distally of said distally-facing backstop surface so as to create a gap with said body;
said anchor member having an elongated depression positioned on an outer surface of said body and in which said core member is fixed within. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A stent delivery device comprising:
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a multi-lumen catheter containing a first lumen providing a passage way for a guidewire and a second lumen housing a core member, where the core member is connected to a pusher on a proximal end and an anchor member on a distal end; the anchor member releasably connected to a stent for inserting or retracting the stent;
said anchor member comprising a body that forms a distally-facing backstop surface and a plurality of radially oriented posts fixed distally of said distally-facing backstop surface so as to create a gap with said body;
said anchor member having an elongated depression positioned on an outer surface of said body and in which said core member is fixed within; anda third lumen connected to the anchor member and extending into the first lumen in a telescoping arrangement such that the third lumen is moveable in both directions as the core member is moved while the first lumen remains in a fixed position to provide a dedicated rapid exchange port for the guidewire. - View Dependent Claims (8, 9, 10)
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11. A stent delivery system for endovascular delivery of a stent comprising:
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a guidewire; a multi-lumen catheter containing a first lumen and a second lumen; the first lumen providing a passage way for the guidewire; the second lumen housing a core member; the core member having a proximal end and a distal end where the core member is connected to a pusher on the proximal end and an anchor member on the distal end;
said anchor member comprising a body that forms a distally-facing backstop surface and a plurality of radially oriented posts fixed distally of said distally-facing backstop surface so as to create a gap with said body;
said anchor member having an elongated depression positioned on an outer surface of said body and in which said core member is fixed within; and
,the anchor member releasably connected to the stent for inserting or retracting the stent, where pushing or pulling the pusher causes the anchor member to move while the multi-lumen catheter remains in a fixed position; wherein the multi-lumen catheter further comprises a third lumen connected to the anchor member and extending into the first lumen in a telescoping arrangement such that the third lumen is moveable in both directions as the core member is moved while the first lumen remains in a fixed position to provide a dedicated rapid exchange port for the guidewire.
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Specification