Method of producing low profile stent and graft combination
First Claim
1. A method of compacting an endoprosthesis comprising:
- providing a self-expanding endoprosthesis comprising a stent-element;
providing at least one internally tapered die proportioned to compact the endoprosthesis, the tapered die comprising multiple raised flutes and grooves therein;
passing the endoprosthesis through the tapered die to reduce dimensions of the endoprosthesis, the raised flutes and grooves causing the endoprosthesis to fold into uniform pleats in its compacted dimension; and
passing the endoprosthesis through the tapered die at least one additional time.
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Accused Products
Abstract
Large diameter self-expanding endoprosthetic devices, such as stents and stent grafts for delivery to large diameter vessels, such as the aorta, are disclosed having very small compacted delivery dimensions. Devices with deployed dimensions of 26 to 40 mm or more are disclosed that are compacted to extremely small dimensions of 5 mm or less, enabling percutaneous delivery of said devices without the need for surgical intervention. Compaction efficiencies are achieved by combining unique material combinations with new forms of restraining devices, compaction techniques, and delivery techniques. These inventive devices permit consistent percutaneous delivery of large vessel treatment devices. Additionally, small endoprosthetic devices are disclosed that can be compacted to extremely small dimensions for delivery through catheter tubes of less than 1 mm diameter.
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Citations
16 Claims
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1. A method of compacting an endoprosthesis comprising:
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providing a self-expanding endoprosthesis comprising a stent-element; providing at least one internally tapered die proportioned to compact the endoprosthesis, the tapered die comprising multiple raised flutes and grooves therein; passing the endoprosthesis through the tapered die to reduce dimensions of the endoprosthesis, the raised flutes and grooves causing the endoprosthesis to fold into uniform pleats in its compacted dimension; and passing the endoprosthesis through the tapered die at least one additional time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of compacting an endoprosthesis comprising
providing a self-expanding endoprosthesis having a first diameter; -
compacting the endoprosthesis to a second diameter smaller than the first diameter; allowing the endoprosthesis to expand to a diameter larger than the second diameter; subsequently compacting the endoprosthesis to a third diameter smaller than the second diameter; providing at least one tapered die proportioned to compact the endoprosthesis; passing the endoprosthesis through the at least one tapered die to reduce dimensions of the endoprosthesis; providing flutes and grooves on the at least one tapered die; and passing the endoprosthesis through the tapered die with flutes and grooves in order to establish pleated folds in the endoprosthesis when compacted. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification