Shaped woven tubular soft-tissue prostheses and method of manufacturing the same
First Claim
Patent Images
1. A method for producing a varying diameter tubular prosthesis comprising:
- weaving a seamless wall portion having a first longitudinal expanse portion comprising a number of first warp yarns of a first polymer;
having a first shrinkage property weaving a seamless wall portion having a second longitudinal expanse portion comprising a number of second warp yarns of a second polymer which is different from said first shrinkage property;
seamlessly transitioning said first and said second expanse portions; and
heat-setting said first and said second expanse portions to shrink said number of first warp yarns of said first polymer to a first tubular diameter and to shrink said number of second warp yarns of said second polymer to a second tubular diameter which is different from said first tubular diameter to shape said varying diameter tubular prosthesis.
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Abstract
Continuously flat-woven implantable tubular prostheses have seamless woven sections which gradually change the number of warp yarns to smoothly transition, i.e., taper, from one diameter to another. Multi-diameter endoluminal grafts having a variety of shapes and configurations are made using a seamless weaving process without unacceptable voids or gaps in the tubular wall.
123 Citations
13 Claims
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1. A method for producing a varying diameter tubular prosthesis comprising:
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weaving a seamless wall portion having a first longitudinal expanse portion comprising a number of first warp yarns of a first polymer;
having a first shrinkage propertyweaving a seamless wall portion having a second longitudinal expanse portion comprising a number of second warp yarns of a second polymer which is different from said first shrinkage property;
seamlessly transitioning said first and said second expanse portions; and
heat-setting said first and said second expanse portions to shrink said number of first warp yarns of said first polymer to a first tubular diameter and to shrink said number of second warp yarns of said second polymer to a second tubular diameter which is different from said first tubular diameter to shape said varying diameter tubular prosthesis. - View Dependent Claims (2, 3, 4, 5)
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6. A method for producing a varying diameter tubular prosthesis comprising:
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weaving a wall portion having a first longitudinal expanse portion comprising a first number of warp yarns of a first polymer;
weaving a wall portion having a second longitudinal expanse portion comprising a second number of warp yarns of a second polymer;
seamlessly transitioning said first and said second expanse portions; and
heat-setting said first expanse portion at a first temperature to shrink said yarns to a first tubular diameter; and
heat-setting said second expanse portion at a second temperature, which is different from said first temperature, to shrink said yarns to a second tubular diameter, which is different from the first tubular diameter, to shape said varying diameter tubular prosthesis. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification