DEFORMABLE LUMEN SUPPORT DEVICES AND METHODS OF USE
First Claim
1. A lumen support configured to be expanded and contracted to a plurality of stable positions, the support comprising a plurality of cells, each of the plurality of cells defined by at least a first segment and a second segment, the cell comprising a first stable collapsed configuration, a second stable collapsed configuration, a first stable expanded configuration, and a second stable expanded configuration, the first segment, comprising a material having an elastic range between about 0.15 to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa, the material exhibiting reduced recoil to an applied force, and the second segment being less flexible than the first segment, said first segment of each cell being configured to transition from a first stable contracted position to a first stable expanded position relative to said second segment thereby causing each cell to transition from the first stable collapsed configuration to the first stable expanded configuration, wherein said first segment is configured to plastically deform to a second stable contracted position creating an area for each cell less than the area created when said first segment is at said first stable contracted position, and wherein said first segment is configured to plastically deform to a second stable expanded position creating an area for each cell greater than the area created when said first segment is at said first stable expanded position.
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Accused Products
Abstract
Lumen support devices and methods of their use are provided. A lumen support includes one or more plastically deformable cells having two stable configurations with no stable configurations between the two stable configurations. The lumen support device may be plastically deformed to other stable configurations.
114 Citations
20 Claims
- 1. A lumen support configured to be expanded and contracted to a plurality of stable positions, the support comprising a plurality of cells, each of the plurality of cells defined by at least a first segment and a second segment, the cell comprising a first stable collapsed configuration, a second stable collapsed configuration, a first stable expanded configuration, and a second stable expanded configuration, the first segment, comprising a material having an elastic range between about 0.15 to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa, the material exhibiting reduced recoil to an applied force, and the second segment being less flexible than the first segment, said first segment of each cell being configured to transition from a first stable contracted position to a first stable expanded position relative to said second segment thereby causing each cell to transition from the first stable collapsed configuration to the first stable expanded configuration, wherein said first segment is configured to plastically deform to a second stable contracted position creating an area for each cell less than the area created when said first segment is at said first stable contracted position, and wherein said first segment is configured to plastically deform to a second stable expanded position creating an area for each cell greater than the area created when said first segment is at said first stable expanded position.
- 7. A lumen support comprising a plastically deformable structure made of a material having an elastic range between about 0.15 to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa, the structure capable of assuming an original collapsed configuration or a plastically deformed collapsed configuration and an original expanded configuration or a plastically deformed expanded configuration, wherein no stable configurations exist between the original collapsed configurations or the original expanded configuration.
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10. A method of crimping a lumen support on a delivery device comprising:
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delivering a lumen support onto a delivery device, the lumen support comprising one or more unit cells, the one or more unit cells having a thick strut and a thin strut and capable of assuming an original collapsed configuration or a plastically deformed collapsed configuration and an original expanded configuration or a plastically deformed expanded configuration, wherein no stable configurations exist between the original collapsed configurations or the original expanded configuration; applying a radially inward force to the lumen support; and deforming one or more unit cells of the lumen support to a plastically deformed collapsed configuration. - View Dependent Claims (11, 12, 13, 14)
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15. A lumen support comprising:
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a plurality of unit cells arranged in a first column and a second column, the first and second columns having a tubular shape and being interconnected by at least one flexible connector, wherein each unit cell in the first column of unit cells is coupled by first flexible articulations, and wherein each unit cell in the second column of unit cells is coupled by second flexible articulations; wherein at least some of the unit cells of the plurality of unit cells are capable of transitioning between a stable expanded configuration and a stable collapsed configuration by application of a force through an inversion point of decreased force. - View Dependent Claims (16, 17, 18)
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19. A balloon catheter comprising:
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a balloon; and a lumen support device in a crimped configuration coupled to the balloon, the device comprising one or more unit cells capable of transitioning from a stable collapsed configuration to a stable expanded configuration by application of a force through an inversion point of decreased force, the one or more unit cells capable of plastically deforming to an expanded plastically deformed configuration;
wherein the lumen support device comprises a material having an elastic range between about 0.15 to about 1% and an elongation of above 30% and an ultimate tensile strength greater than 500 MPa. - View Dependent Claims (20)
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Specification