Prosthesis with improved biocompatibility made with N-vinyl polymers
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United States of America Patent
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Feb 3, 1998
Grant Date -
N/A
app pub date -
Oct 16, 1996
filing date -
Jul 6, 1991
priority date (Note) -
Expired
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Abstract
An injectable or implantable material for soft tissue augmentation comprising a hydrogel containing both hydrophobic and hydrophilic domains is prepared by copolymerizing a hydrophilic monomer, such as water soluble N-vinylpyrrolidone with non-water soluble monomers, such as N-vinyl carbazole, its derivatives, or a non-water soluble derivative of N-vinylpyrrolidone. Also suitable for injection into direct contact with body tissue are hydrogels prepared by cross-linking polyvinylpyrrolidone. The hydrogel may be either solid or composed of particles. The hydrogel may also be enclosed within a flexible porous or nonporous envelope.
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