Single dose vaccination system
US5593697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1993 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Nov 17, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5073
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides a pharmaceutical or veterinary implant, which when parenterally administered releases a pulse of at least one biologically active material at a controllable time interval after implantation. The implant comprises the biologically active material; an excipient comprising at least one water soluble material and at least one water insoluble material; and a polymer film coating adapted to rupture at a predetermined period of time after implantation, and wherein the excipients and polymers are biocompatible. The biologically active material is selected from the group consisting of antigens, antibodies, hormones, growth promotants, antibiotics, nutrients, minerals and vitamins. Preferably the excipient comprises a combination of two or more water-soluble and water-insoluble materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.