Apparatus and methods for stent delivery with embolic protection
First Claim
1. A catheter system, comprising:
- a stent delivery catheter having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end;
a stent having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state;
and an embolic protection filter having an expanded state and an unexpanded state;
the catheter system having a deployed position and an undeployed position,a guidewire having a guidewire shaft, wherein the embolic protection filter is slidably mounted on the guidewire shaft;
wherein the embolic protection filter comprises;
a filter member connected to a distal filter cylinder having an inner diameter D1 larger than an outer diameter d2 of the guidewire shaft;
a plurality of connecting wires having a first end connected to an outer periphery of the filter member and a second end connected to a proximal filter cylinder having an inner diameter D2 larger than the outer diameter d2 of the guidewire shaft;
and an actuation member attached to the guidewire shaft, the actuation member having an outer diameter d1 that is larger than the outer diameter d2 of the guidewire shaft and larger than the inner diameter D2 of the proximal filter cylinder;
wherein, when the catheter system is in the undeployed position, the stent is in its unexpanded state and positioned within the interior lumen of the stent delivery catheter and the embolic protection filter is in its unexpanded state and positioned within the stent lumen of the stent.
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Accused Products
Abstract
A catheter system including: a stent delivery catheter (2) having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end; a stent (1) having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state; and an embolic protection filter (3) having an expanded state and an unexpanded state; the catheter system having a deployed position and an undeployed position. When the catheter system is in the undeployed position, the stent (1) is in its unexpanded state and positioned within the interior lumen of the stent delivery catheter (2) and the embolic protection filter (3) is in its unexpanded state and positioned within the stent lumen of the stent.
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Citations
27 Claims
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1. A catheter system, comprising:
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a stent delivery catheter having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end; a stent having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state; and an embolic protection filter having an expanded state and an unexpanded state; the catheter system having a deployed position and an undeployed position, a guidewire having a guidewire shaft, wherein the embolic protection filter is slidably mounted on the guidewire shaft; wherein the embolic protection filter comprises; a filter member connected to a distal filter cylinder having an inner diameter D1 larger than an outer diameter d2 of the guidewire shaft; a plurality of connecting wires having a first end connected to an outer periphery of the filter member and a second end connected to a proximal filter cylinder having an inner diameter D2 larger than the outer diameter d2 of the guidewire shaft; and an actuation member attached to the guidewire shaft, the actuation member having an outer diameter d1 that is larger than the outer diameter d2 of the guidewire shaft and larger than the inner diameter D2 of the proximal filter cylinder; wherein, when the catheter system is in the undeployed position, the stent is in its unexpanded state and positioned within the interior lumen of the stent delivery catheter and the embolic protection filter is in its unexpanded state and positioned within the stent lumen of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A catheter system, comprising:
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a stent delivery catheter having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end; a stent having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state; and an embolic protection filter having an expanded state and an unexpanded state; the catheter system having a deployed position and an undeployed position, a guidewire having a guidewire shaft, wherein the embolic protection filter is slidably mounted on the guidewire shaft; wherein the embolic protection filter comprises; a filter member connected to a distal filter cylinder having an inner diameter D1 larger than an outer diameter d2 of the guidewire shaft; a plurality of connecting wires having a first end connected to an outer periphery of the filter member and a second end connected to a proximal filter cylinder having an inner diameter D2 larger than the outer diameter d2 of the guidewire shaft; and an actuation member attached to the guidewire shaft, the actuation member having an outer diameter d1 that is larger than the outer diameter d2 of the guidewire shaft and larger than the inner diameter D2 of the proximal filter cylinder; wherein the inner diameter D1 of the distal filter cylinder is larger than the outer diameter d1 of the actuation member. - View Dependent Claims (12, 13)
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14. A catheter system, comprising:
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a stent delivery catheter having a proximal end and a distal end and an interior lumen extending between the proximal end and the distal end; a self-expandable stent having a proximal end and a distal end and a stent lumen extending between the proximal end and the distal end, the stent having an expanded state and an unexpanded state; and a self-expandable embolic protection filter having an expanded state and an unexpanded state; a stent pusher catheter having a catheter shaft with a proximal end and a distal end and sized to fit within the interior lumen of the stent delivery catheter proximal to the stent, the stent pusher catheter having a shoulder at the distal end of the catheter shaft configured to bear against the proximal end of the stent, wherein the stent pusher catheter is configured to selectively deploy the catheter system by urging the stent from its unexpanded state within the interior lumen of the stent delivery catheter to its expanded state exterior to the interior lumen of the stent delivery catheter; an inflatable angioplasty balloon mounted near the distal end of the catheter shaft of the stent pusher catheter; the catheter system having a deployed position and an undeployed position, wherein, when the catheter system is in the undeployed position, the stent is in its unexpanded state and positioned within the interior lumen of the stent delivery catheter and the embolic protection filter is in its unexpanded state and positioned within the stent lumen of the stent. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification