Drug delivery system
First Claim
Patent Images
1. A drug delivery system comprising an active drug as a suspension of colloidal particles, each particle being coated with a material which provides a hydrophilic coat having a thickness of from 100 Å
- to 154 Å and
a steric barrier to particle cell interaction.
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Reexamination
Accused Products
Abstract
Particles of a drug are directed away from the reticuloendothelial system by the use of surface coating and surface grafting techniques which substantially prevent the take up of the composite particles by the liver.
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Citations
5 Claims
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1. A drug delivery system comprising an active drug as a suspension of colloidal particles, each particle being coated with a material which provides a hydrophilic coat having a thickness of from 100 Å
- to 154 Å and
a steric barrier to particle cell interaction. - View Dependent Claims (2, 3, 4)
- to 154 Å and
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5. A drug delivery system in particulate form which following reconstitution is suitable for injection as a suspension of colloidal particles, said system comprising a plurality of composite particles with each particle comprising an active drug in particulate form coated with a material which provides a hydrophilic coat having a thickness in the range of from 100 Å
- to 154 Å and
a steric barrier to particle cell interaction.
- to 154 Å and
Specification