Flexible vascular occluding device
First Claim
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1. A system, for treatment of an aneurysm, comprising:
- a guidewire for guiding the system to an aneurysm;
a tubular-shaped device for positioning by a user within a blood vessel for treatment of an aneurysm, the device including a plurality of braided strands of helically-wound material in a lattice structure, wherein the device is self-expandable to a first expanded tubular configuration, such that the device engages an inner surface of a blood vessel with a surface of the device being apposed to the vessel surface, the first expanded tubular configuration having a first porosity in a first portion and in a second portion along a length of the tubular-shaped device, the second portion being adjustable, after engagement of the device with the vessel surface, along a length of the second portion to change the device into a second expanded tubular configuration based on an input by the user while the device remains engaged with the vessel surface, such that the second portion acquires a second porosity, different from the first porosity, while the first portion maintains the first porosity;
wherein at least two of the braided strands are formed of different metallic materials;
wherein the at least two of the braided strands are of different widths;
wherein one of the materials comprises platinum;
a device adjuster configured to be positioned in the blood vessel, engage an inner surface of the device while at least a portion of the device adjuster is within the tubular-shaped device, and change the device from the first configuration to the second configuration based on the input;
wherein the input comprises movement, by the user, of the device adjuster in contact with the device.
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Abstract
A vascular occluding device for modifying blood flow in a vessel, while maintaining blood flow to the surrounding tissue. The occluding device includes a flexible, easily compressible and bendable occluding device that is particularly suited for treating aneurysms in the brain. The neurovascular occluding device can be deployed using a micro-catheter. The occluding device can be formed by braiding wires in a helical fashion and can have varying lattice densities along the length of the occluding device. The occluding device could also have different lattice densities for surfaces on the same radial plane.
614 Citations
53 Claims
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1. A system, for treatment of an aneurysm, comprising:
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a guidewire for guiding the system to an aneurysm; a tubular-shaped device for positioning by a user within a blood vessel for treatment of an aneurysm, the device including a plurality of braided strands of helically-wound material in a lattice structure, wherein the device is self-expandable to a first expanded tubular configuration, such that the device engages an inner surface of a blood vessel with a surface of the device being apposed to the vessel surface, the first expanded tubular configuration having a first porosity in a first portion and in a second portion along a length of the tubular-shaped device, the second portion being adjustable, after engagement of the device with the vessel surface, along a length of the second portion to change the device into a second expanded tubular configuration based on an input by the user while the device remains engaged with the vessel surface, such that the second portion acquires a second porosity, different from the first porosity, while the first portion maintains the first porosity; wherein at least two of the braided strands are formed of different metallic materials; wherein the at least two of the braided strands are of different widths; wherein one of the materials comprises platinum; a device adjuster configured to be positioned in the blood vessel, engage an inner surface of the device while at least a portion of the device adjuster is within the tubular-shaped device, and change the device from the first configuration to the second configuration based on the input; wherein the input comprises movement, by the user, of the device adjuster in contact with the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system, for treating an aneurysm, comprising:
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a guidewire for guiding the system to an aneurysm; a tubular device having a plurality of crossing strands movable relative to each other and forming a lattice structure, wherein the device is self-expandable to a first configuration, such that the device engages an inner surface of a blood vessel with a surface of the device being apposed to the vessel surface, wherein while in the first configuration, the device has a first porosity in a first portion along a length of the tubular device and the first porosity in a second portion along the length of the tubular device, and wherein the lattice structure is adjustable to a second configuration based on an input by a user while the device remains engaged with the vessel surface, wherein, while in the second configuration, the device has the first porosity in the first portion and a second porosity in the second portion, the second porosity being different than the first porosity; wherein at least two of the crossing strands are formed of different metallic materials; wherein the at least two of the crossing strands are of different widths; wherein one of the materials comprises platinum; a device adjuster configured to be positioned in the blood vessel, engage an inner surface of the device while at least a portion of the device adjuster is within the tubular device, and change the device from the first configuration to the second configuration based on the input; wherein the input comprises movement, by the user, of the device adjuster while engaged with the device. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A system, for implanting in a patient'"'"'s vessel, comprising:
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a guidewire for guiding the system in the patient'"'"'s vessel; a stent comprising strands;
a proximal portion having a proximal end;
a distal portion having a distal end;
a stent length extending from the proximal end to the distal end;
a stent wall that defines a lumen extending between the proximal end and the distal end, the stent wall being self-expandable to a self-expanded configuration with a surface of the stent being engaged upon an inner surface of the vessel, the stent wall being further adjustable to an adjusted configuration by mechanical input provided by a user while the surface of the stent remains engaged upon the inner surface of the vessel;
wherein a porosity and a stent length of a discrete portion of the stent wall change as the stent wall adjusts from the self-expanded configuration to the adjusted configurationwherein at least two of the strands are formed of different metallic materials; wherein the at least two of the strands are of different widths; wherein one of the materials comprises platinum; a stent adjuster configured to be positioned in the patient'"'"'s vessel, engage an inner surface of the stent while at least a portion of the stent adjuster is within the stent, and change the stent from the self-expanded configuration to the adjusted configuration based on the input; wherein the input comprises movement, by the user, of the stent adjuster relative to the stent. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. A system, for implanting a stent in a patient'"'"'s vessel, comprising:
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a guidewire for guiding the system in the patient'"'"'s vessel; a stent adjuster being configured to extend within a blood vessel of a patient; and a stent comprising strands and being self-expandable from a compressed configuration to a self expanded configuration such that the stent engages an inner surface of a blood vessel with a surface of the stent being apposed to the vessel surface, the stent having a proximal end, a distal end, a stent lumen extending from the proximal end to the distal end, and a stent wall that has, in the self-expanded configuration, an adjustable porosity after engagement of the stent with the vessel surface; wherein at least two of the strands are formed of different metallic materials; wherein the at least two of the strands are of different widths; wherein one of the materials comprises platinum; wherein, when the distal end of the stent is in the self-expanded configuration, the adjustable porosity is adjustable by advancing or withdrawing the proximal end of the stent relative to the distal end of the stent by providing an input from a user while the stent remains engaged with the vessel surface; wherein the stent adjuster is configured to be positioned in the blood vessel, engage an inner surface of the stent while at least a portion of the stent adjuster is within the stem, and adjust the device stem from the self-expanded configuration based on the input; wherein the input comprises movement, by the user, of the stent adjuster in contact with the stent. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A system, for implanting a stent in a body lumen of a patient, comprising:
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a guidewire for guiding the system through the body lumen; a stent comprising strands and having a proximal portion and a distal portion;
the stent having a stent wall that defines a lumen extending from the proximal portion to the distal portion, the stem wall having a compressed configuration and a self-expanded configuration wherein the stem engages an inner surface of a blood vessel with a surface of the stent being apposed to a surface of the vessel;wherein at least two of the strands are formed of different metallic materials; wherein the at least two of the strands are of different widths;
wherein one of the materials comprises platinum;wherein, from the self-expanded configuration, the stem wall has a variable porosity that is adjustable by relative movement of the proximal portion with respect to the distal portion in response to a mechanical input provided by a user while the surface of the stent remains engaged upon the inner surface of the vessel; a stent adjuster configured to be positioned in the blood vessel, engage an inner surface of the stent while at least a portion of the stent adjuster is within the stent, and change the stent from the self-expanded configuration based on the input; wherein the input comprises movement, by the user, of the stent adjuster in contact with the stent. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53)
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Specification