Polymeric tubes with controlled orientation
AssigneeZeus Co., Ltd.
InventorsJames M. Lindsey, John Richard Campanelli, Elizabeth A. Foley, Bruce L. Anneaux, Justin A. Marro
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Abstract
Methods for preparing oriented polymer tubes, such as biodegradable polymer tubes suitable for in vivo use, are provided herein. The disclosed methods provide alternatives to the typical extrusion/expansion methods by which oriented polymeric tubes for such uses are commonly produced. Advantageously, the disclosed methods can provide more homogeneous molecular orientation of crystallizable polymers within the tube walls, which can endow such polymeric tubes with enhanced strength (e.g., resistance to compression) and toughness.
Claims23
-34. (canceled)
A multilayered tube, comprising at least one stretched polymeric material exhibiting at least partial molecular orientation,
- wherein the at least one stretched polymeric material comprises at least one crystallizable biocompatible polymeric material, and
- wherein the tube exhibits a maximum stress value of between 15 and 26 MPa.
Dependencies are inferred from the claim text.