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AssigneeGeistlich Pharma AG
InventorsDaniel SUPPIGER, Paul BUXTON, Nino KURZ
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An injectable aqueous implant formulation, and processes for making and using the formulation, wherein the injectable aqueous implant formulation has been sterilized by gamma-ray or X-ray-irradiation and can be extruded through a tapering system and an 18 gauge (0.838 mm inner diameter) 25.4 mm long cannula with a force not exceeding 60 N, which comprises 25-45 w/w % of a mixture of nanocrystalline hydroxyapatite particles derived from natural bone having a size of 50 to 200 μm as determined by sieving and fragments of naturally crosslinked fibrous collagen material that pass through a 0.5 mm sieve, whereby the w/w ratio of nanocrystalline hydroxyapatite to collagen is from 1.8 to 4.5, which contains at least 0.05% (w/w) ascorbic acid.
An injectable aqueous implant formulation which has been sterilized by gamma-ray or X-ray-irradiation and which comprises 25-45 w/w % of a mixture of nanocrystalline hydroxyapatite particles derived from natural bone having a size of 50 to 200 μm as determined by sieving and fragments of naturally crosslinked fibrous collagen material that pass through a 0.5 mm sieve, whereby the w/w ratio of nanocrystalline hydroxyapatite to collagen is from 1.8 to 4.5 and the injectable aqueous formulation comprises 0.1-1% (w/w) ascorbic acid.
(canceled)
Dependencies are inferred from the claim text.