GB2237510A — Small particle drug compositions for nasal administration
Assigned to Kyowa Kirin Services Ltd · Expires 1991-05-08 · 35y expired
What this patent protects
A drug delivery composition for intranasal delivery comprises a plurality of bioadhesive microspheres and active drug associated with each microsphere, at least 90 wt % of the microspheres having a diameter in the range 0.1 mu m to 10 mu m. The microspheres may be of starch, ge…
USPTO Abstract
A drug delivery composition for intranasal delivery comprises a plurality of bioadhesive microspheres and active drug associated with each microsphere, at least 90 wt % of the microspheres having a diameter in the range 0.1 mu m to 10 mu m. The microspheres may be of starch, gelatin, dextran, collagen or albumin. Suitable drugs include peptides, such as insulin, and antigenic vaccine ingredients. The composition may additionally comprise an absorption enhancer. The microspheres are administered to the nasal cavity by a means such that the product of the square of the microsphere diameter and the flow rate is greater than 2000 mu m<2> litres/min.
Drugs covered by this patent
- Androgel (TESTOSTERONE) · Besins Hlthcare
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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