Production of microspheres
First Claim
Patent Images
1. A process for preparing microspheres comprising the steps of combining a macromolecule and a polymer in an aqueous solution, contacting a volume of the aqueous solution with a surface at a surface area to volume ratio of at least about 6.5 cm−
- 1, and exposing the solution to an energy source for a sufficient period of time to form microspheres.
1 Assignment
0 Petitions
Accused Products
Abstract
Protein microspheres are produced by contacting an aqueous solution of a macromolecule and a polymer with a surface at a high surface area to volume ratio, and heating the solution. The microspheres are useful for preparing pharmaceuticals of defined dimensions which can be delivered to a patient by inhalation therapy.
46 Citations
42 Claims
-
1. A process for preparing microspheres comprising the steps of
combining a macromolecule and a polymer in an aqueous solution, contacting a volume of the aqueous solution with a surface at a surface area to volume ratio of at least about 6.5 cm− - 1, and
exposing the solution to an energy source for a sufficient period of time to form microspheres. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 35, 36, 37, 38, 39, 40, 41, 42)
- 1, and
-
30. A device for the production of microspheres comprising
a reactor having an internal surface area to volume ratio of 6.5 cm− - 1,
an aqueous solution of a macromolecule and a polymer contacting the internal surfaces of the reactor, and means for heating the aqueous solution. - View Dependent Claims (31, 32, 33, 34)
- 1,
Specification