PARTIALLY COVERED STENT DEVICES AND METHODS OF USE
First Claim
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1. A stent device for covering an aneurysm in a blood vessel, wherein the blood vessel includes at least one side-branch near the aneurysm, the device comprising:
- a tubular frame having a first end and a second end; and
a covering between the first and second ends of the frame which substantially restricts flow of blood through the frame to the aneurysm while the stent device is positioned within the blood vessel so that the covering substantially covers the aneurysm, and wherein the tubular frame has a cell geometry which allows sufficient flow of blood through the cell geometry at least between the ends and the covering so as to maintain blood flow through to the at least one side-branch.
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Abstract
Devices, systems and methods are provided for treating aneurysms, particularly cerebral aneurysms. Such treatment is achieved minimally invasively without the need for conventional filling materials and methods. Such treatments may be used for aneurysms located near blood vessel side-branches and bifurcations.
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Citations
24 Claims
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1. A stent device for covering an aneurysm in a blood vessel, wherein the blood vessel includes at least one side-branch near the aneurysm, the device comprising:
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a tubular frame having a first end and a second end; and
a covering between the first and second ends of the frame which substantially restricts flow of blood through the frame to the aneurysm while the stent device is positioned within the blood vessel so that the covering substantially covers the aneurysm, and wherein the tubular frame has a cell geometry which allows sufficient flow of blood through the cell geometry at least between the ends and the covering so as to maintain blood flow through to the at least one side-branch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent device for covering an aneurysm in a blood vessel, wherein the blood vessel includes at least one side-branch near the aneurysm, the device comprising:
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a tubular frame having a first end, a second end, an occlusional cell geometry and an open cell geometry, wherein the occlusional cell geometry is configured to be positioned so as to cover the aneurysm and substantially restrict flow of blood therethrough to the aneurysm while the stent device is positioned within the blood vessel, and wherein the open cell geometry is configured to be positioned so as to maintain blood flow through to the at least one side-branch while the stent device is positioned within the blood vessel. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of covering an aneurysm in a blood vessel wherein the blood vessel includes at least one side-branch near the aneurysm, the method comprising:
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advancing a stent through the blood vessel, wherein the stent comprises a tubular frame having a first end, a second end, an open cell geometry and a covering; and
positioning the stent within the blood vessel so that the covering substantially covers the aneurysm restricting blood flow to the aneurysm and the open cell geometry substantially covers the at least one side-branch allowing blood flow to the at least one side-branch. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification