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US 2003/0196717 A1Published application
Shaped woven tubular soft-tissue prostheses and method of manufacturing the same
AssigneeMeadox Medicals, Inc.
InventorsJose F. Nunez, Peter J. Schmitt
Life of this patent
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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.
Claims13
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;
- 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 polymer to a second tubular diameter which is different from said first tubular diameter to shape said varying diameter tubular prosthesis.
2 more elements
A method for producing a varying diameter tubular prosthesis comprising:
- 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.
4 more elements
Dependencies are inferred from the claim text.