Hyaluronic acid fractions having pharmaceutical activity, and pharmaceutical compositions containing the same
First Claim
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1. A substantially pure, non-inflammatory hyaluronic acid fraction having an average molecular weight of between 30,000 and 730,000, and which is free of low molecular weight hyaluronic acid having a molecular weight of less than 30,000.
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Abstract
Two pharmaceutically useful fractions of hyaluronic acid are obtained comprising a first fraction with a molecular weight between 50,000 and 100,000 which is useful for wound healing, and a second fraction having a molecular weight between 500,000 and 730,000 which is useful for intraocular and intraarticular injections.
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22 Claims
- 1. A substantially pure, non-inflammatory hyaluronic acid fraction having an average molecular weight of between 30,000 and 730,000, and which is free of low molecular weight hyaluronic acid having a molecular weight of less than 30,000.
- 19. A substantially pure, non-inflammatory hyaluronic acid fraction having an average molecular weight of between 50,000 and 350,000, and which is free of low molecular weight hyaluronic acid having a molecular weight of less than 30,000.
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