Multiple layer polymeric structure
US7431995B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 18, 2005 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Nov 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a receptacle (30) for a therapeutic fluid susceptible to deterioration on exposure to a gas such as oxygen or carbon dioxide. The receptacle (30) has walls of sheet material each including at least one layer forming a barrier essentially impermeable to such gas, and a seal sealing the walls together in a region thereof. A transfer tube (40) is sealed in the seal having a proximal end in the receptacle (30), a distal end accessible from outside the receptacle (30), a flow passage (56) extending between said proximal and distal ends, and a closure (54) blocking flow through the flow passage (56) adapted to be pierced by a tubular needle for transfer of therapeutic through the needle. The transfer tube (40) and closure (54) are essentially impermeable to said gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.