Absorbable block copolymers and surgical articles fabricated therefrom
First Claim
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1. A block copolymer comprising:
- a) a proportion of glycolic acid ester units as one of said blocks, andb) another of said blocks comprising 1,4 dioxan-2-one randomly polymerized with 1,3 dioxane-2-one.
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Abstract
Block copolymers wherein one of the blocks is made from hard phase forming monomers and another of the blocks is made from soft phase forming monomers copolymerized with randomly intermingled units of other soft phase forming monomers. The copolymers are useful in forming surgical articles, including both monofilament and multifilament sutures. The block copolymer preferably comprising:
a) a proportion of glycolic acid ester units as end blocks, and
b) a center block comprising 1,4 dioxan-2-one randomly polymerized with 1,3 dioxane-2-one.
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17 Claims
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1. A block copolymer comprising:
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a) a proportion of glycolic acid ester units as one of said blocks, and b) another of said blocks comprising 1,4 dioxan-2-one randomly polymerized with 1,3 dioxane-2-one. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of making a copolymer comprising the steps of:
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a) adding 1,4 dioxane-2-one and 1,3 dioxane-2-one; b) polymerizing component (a) to the point where all the 1,3 dioxane-2-one is incorporated in a polymer but residual 1,4 dioxane-2-one monomer remains; c) adding glycolide; and d) polymerizing. - View Dependent Claims (17)
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Specification