Crimping method and crimping device for a tubular stent, and implantable device
AssigneeTerumo Kabushiki Kaisha
InventorRisa SEKIGUCHI
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Abstract
A method for crimping a tubular stent onto a balloon using one or more pressing members includes arranging the stent on an outer circumferential side of the balloon, heating the one or more pressing members, reducing a diameter of the stent by pressing the one or more heated pressing members against a porous structure that covers an outer circumference of the stent, from an outer surface side of the porous structure, and pressurizing an inside of the balloon at least once.
Claims20
A method for crimping a tubular stent onto a balloon using one or more pressing members, the method comprising:
- arranging the stent on an outer circumferential side of the balloon;
- heating the one or more pressing members;
- reducing a diameter of the stent by pressing the one or more heated pressing members against a porous structure that covers an outer circumference of the stent, from an outer surface side of the porous structure;
- and
- pressurizing an inside of the balloon at least once.
An implantable device comprising:
- a radially expandable tubular stent that is crimped onto an outer circumferential surface of a balloon;
- and
- a porous structure arranged to cover the stent, wherein
- at least a part of the porous structure is fixed to the stent,
- the porous structure includes void portions penetrating through the porous structure in a thickness direction and framework portions that define the void portions,
- the stent includes a drug coating layer on a surface of the stent that faces the porous structure, and
- the drug coating layer has recesses and protrusions corresponding to the void portions and the framework portions.
A device for crimping a tubular stent that is radially expandable onto a balloon, the device comprising:
- one or more pressing members that crimp the stent onto the balloon by reducing a diameter of the stent in accordance with movement of the one or more pressing members in a radially inward direction, the balloon being arrangeable on an inner circumferential side of the stent;
- and
- one or more supply rollers configured to supply one or more porous structures between the one or more pressing members and the stent.
Dependencies are inferred from the claim text.