Polymeric x-ray contrast compositions containing iodinated polymeric beads and microcrystaline cellulose
US5525327A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Apr 14, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/0433
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising iodinated polymeric, water-insoluble beads having a particle size of from about 0.01 to about 1000.mu. wherein said iodinated polymeric beads comprise a polymer containing repeating units of the formula (I) ##STR1## wherein A is a repeating organic unit in the backbone chain of the polymer; and X is an organic moiety containing or iodinated eromatic group and a hydrophilic group, said moiety having an iodine content within the range of from about 40 to about 80 weight percent based or the molecular weight of X, in a pharmaceutically acceptable carrier comprising a cellulose derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.