Composite bioabsorbable materials and surgical articles made thereform
AssigneeUnited States Surgical Corporation
InventorsCheng-Kung Liu, Ying Jiang, Mark S. Roby, Steven L. Bennett, Richard P. Stevenson, Jeffrey P. Pietrangeli
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Abstract
The present invention relates to composite materials having a core portion formed from a first bioabsorbable material and at least one shell portion of a second bioabsorbable material joined to the core portion. The first and second bioabsorbable materials have different rates of bioabsorption. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The materials of the present invention may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.
Claims4
A composite bioabsorbable sheet implantable within a living organism comprising:
- a core portion formed from a first bioabsorbable material;
- a shell portion substantially coextensive with and substantially surrounding said core portion to form a composite sheet, said shell portion formed from a second bioabsorbable material;
- said first and second bioabsorbable materials having different rates of bioabsorption.
A bioabsorbable sheet comprising:
- a core portion formed from a first bioabsorbable material;
- a shell portion joined to said core portion, said shell portion formed from a second bioabsorbable material;
- said first and second bioabsorbable materials having different rates of bioabsorption, wherein said shell portion comprises a first shell portion formed from said second bioabsorbable material and a second shell portion formed from a third bioabsorbable material, said second and third bioabsorbable materials having different rates of bioabsorption.
Dependencies are inferred from the claim text.