Stent and method for use thereof
OwnerJoseph Horton, Marcelino Bowker Gorospe +1inventors
InventorsJoseph Horton, Marcelino Bowker Gorospe, Mohit Dhoriya
Life of this patent
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Abstract
A stent and methods for use of the stent are provided. The stent is positionable in a blood vessel adjacent an opening to an aneurysm. The stent is configured to deflect portions of blood flow away from the opening to the aneurysm to decrease the amount of blood flow entering the aneurysm and decrease the rate at which blood floor enters the aneurysm, and/or increase the amount and control the direction of the blood flow out of the aneurysm.
Claims20
A stent for implantation in a blood vessel adjacent an opening to an aneurysm, the stent comprising:
- a tubular portion having a first end, an opposite second end, a length extending between the first end and the second end, a mid-longitudinal axis extending through the first end and the second end, a first opening at the first end, a second opening at the second end, and an interior passageway extending through the tubular portion between the first opening and the second opening;
- the stent having at least a first waist and a second waist formed as narrowed areas in the tubular portion, the first waist and the second waist being positioned adjacent to another, the second waist being closer to the second end than the first waist, and the first waist and the second waist each having minimum outer diameters smaller than maximum outer diameters of the tubular portion adjacent the first waist and the second waist in corresponding planes extending therethrough that are perpendicular the mid-longitudinal axis;
- wherein the stent is positionable in the blood vessel with the first waist and the second waist positioned upstream of the opening to the aneurysm, the first waist and the second waist serve in deflecting flow of blood through the blood vessel away from the opening to the aneurysm to at least decrease rates of flow of blood entering the aneurysm;
- and
- wherein, when the first waist and the second waist are positioned upstream of the opening to the aneurysm, the tubular portion is uninterrupted adjacent the opening to the aneurysm and immediately downstream of the opening to the aneurysm by additional waists.
A method for optimal placement of a stent in a blood vessel adjacent an opening to an aneurysm and using the stent to reduce deleterious effects of blood flow on the aneurysm, the method comprising:
- providing the stent having a tubular shape, a first end, an opposite second end, a length extending between the first end and the second end, a mid-longitudinal axis extending through the first end and the second end, a first opening at the first end, a second opening at the second end, and a passageway extending between the first opening and the second opening;
- implanting the stent in the blood vessel, positioning a first waist and a second waist formed in the stent upstream of the opening of the aneurysm, the first waist and the second waist being formed as narrowed areas in the tubular shape, the first waist and the second waist being positioned adjacent to another, the second waist being closer to the second end than the first waist, and the first waist and the second waist each having minimum outer diameters smaller than maximum outer diameters of the tubular shape adjacent the first waist and the second waist in corresponding planes extending therethrough that are perpendicular the mid-longitudinal axis;
- and
- directing the flow of blood through the blood vessel away from the opening to the aneurysm to at least decrease rates of flow of blood entering the aneurysm via interaction with the flow of blood with the first waist and the second waist;
- wherein, when the first waist and the second waist are positioned upstream of the opening to the aneurysm, the tubular shape is uninterrupted adjacent the opening to the aneurysm and immediately downstream of the opening to the aneurysm by additional waists.
A method for optimal placement of a stent in a blood vessel adjacent an opening to an aneurysm and using the stent to reduce deleterious effects of blood flow on the aneurysm, the method comprising:
- implanting the stent in the blood vessel by positioning a first waist and a second waist formed in the stent upstream of the opening of the aneurysm, the stent having a tubular shape, the first waist and the second waist being formed as narrowed areas in the tubular shape, the first waist and the second waist being positioned adjacent to another, and the first waist and the second waist each having minimum outer diameters smaller than maximum outer diameters of the tubular shape adjacent the first waist and the second waist in corresponding planes extending therethrough that are perpendicular to a mid-longitudinal axis of the stent;
- and
- directing the flow of blood through the blood vessel away from the opening to the aneurysm to at least decrease rates of flow of blood entering the aneurysm via interaction with the flow of blood with the first waist and the second waist;
- wherein, when the first waist and the second waist are positioned upstream of the opening to the aneurysm, the tubular shape is uninterrupted adjacent the opening to the aneurysm and immediately downstream of the opening to the aneurysm by additional waists.
Dependencies are inferred from the claim text.