Objective To study the bio-safety of a multifunctional dressing based on isobutyl-chitosan,a derivative of chitosan.Methods To investigate the local irritation of the multifunctional dressing by skin,subcutaneous and eye application,determine its sensitization by patch test and observe its systemic acute toxicity by abdominal injection.Results The isobutyl-chitosan multifunctional dressing had no irritation,sensitization and systemic acute toxicity.Conclusion The isobutyl-chitosan multifunctional dressing has a good bio-safety as a wound dressing.
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