Microspheres for radiation therapy
US5302369A · kind A · utility
81Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1991 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Aug 29, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2121/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Microspheres for radiation therapy of a mammal which have a non-radioactive isotope which emits beta or gamma radiation of therapeutic intensity upon being irradiated. The microspheres also contain elements which do not become radioactive upon irradiation. The chemical durability of the microspheres is such that they do not release a significant amount of radiation emitting radioisotope into the mammal's system upon administration. Microspheres containing phosphorus or yttrium; and carbon, nitrogen, fluorine, sodium, magnesium, aluminum, silicon, potassium, vanadium, manganese, gallium, niobium, iodine and/or lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.