Methods of orienting multifilament yarn and monofilaments of poly-4-hydroxybutyrate and copolymers thereof

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United States of America Patent

PATENT NO 9555155
APP PUB NO 20160166727A1
SERIAL NO

14964985

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Abstract

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Resorbable multifilament yarns and monofilament fibers including poly-4-hydroxybutyrate and copolymers thereof with high tenacity or high tensile strength have been developed. The yarns and fibers are produced by cold drawing the multifilament yarns and monofilament fibers before hot drawing the yarns and fibers under tension at temperatures above the melt temperature of the polymer or copolymer. These yarns and fibers have prolonged strength retention in vivo making them suitable for soft tissue repairs where high strength and strength retention is required. The multifilament yarns have tenacities higher than 8.1 grams per denier, and in vivo, retain at least 65% of their initial strength at 2 weeks. The monofilament fibers retain at least 50% of their initial strength at 4 weeks in vivo. The monofilament fibers have tensile strengths higher than 500 MPa. These yarns and fibers may be used to make various medical devices for various applications.

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Patent Owner(s)

Patent OwnerAddress
TEPHA INC99 HAYDEN AVENUE SUITE 360 LEXINGTON MA 02421

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bernasconi, Matthew Norwood, US 17 185
Felix, Fabio Foxborough, US 31 595
Ganatra, Amit Attleboro, US 23 195
Martin, David P Arlington, US 133 7020
Rizk, Said Windham, US 116 1867
Shah, Bhavin Lowell, US 58 8219
Williams, Simon F Sherborn, US 132 6499

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