Dressing products often need replacement during clinical use, and the product itself has a certain fluid absorption nature. Therefore, the following issues need to be addressed in biocompatibility evaluation:
- When preparing the extract of dressing products, the determination of the extraction time should take into account the cumulative clinical use time of the product; when determining the volume of the extraction medium, in addition to considering the extraction ratio, the volume of the extraction medium to be absorbed by the product should also be considered.
- For the evaluation items, the cumulative contact duration between the product and the human body should be considered, not the single contact duration.
