Ivalon is the trade name for a plastic material used in various surgical disciplines.
Properties
It is a sponge made of hydroxylated polyvinyl acetal (PVAc). This material is known for its smoothness, softness, high absorbency, and easy compressibility[^1].
Uses
In neurosurgery, Ivalon is used, for example, in microvascular decompressions, such as for the treatment of trigeminal neuralgia or hemifacial spasm[^1][^2].