Drug delivery particle
First Claim
Patent Images
1. A composition, comprising:
- substantially spherical particles having a diameter of from about 10 microns to about 1 cm, the particles including a first region with pores having a first predominant pore size and a second region surrounding the first region and with pores having a second predominant pore size, the first predominant pore size being larger than the second predominant pore size, and the particles comprising cross-linked polyvinyl alcohol,wherein the second region is about r to 2r/3, and r is a radius of the particles.
2 Assignments
0 Petitions
Accused Products
Abstract
A drug delivery particle including a reservoir region having primarily large pores and a metering region. The particle can be highly spherical.
-
Citations
25 Claims
-
1. A composition, comprising:
-
substantially spherical particles having a diameter of from about 10 microns to about 1 cm, the particles including a first region with pores having a first predominant pore size and a second region surrounding the first region and with pores having a second predominant pore size, the first predominant pore size being larger than the second predominant pore size, and the particles comprising cross-linked polyvinyl alcohol, wherein the second region is about r to 2r/3, and r is a radius of the particles. - 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)
-
Specification