Liquid drug degassing device and ambulatory infusion system including a degassing device
US9205203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Oct 17, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Embodiments directed to a degassing device for removing gas bubbles from a liquid drug stream and an ambulatory infusion system are disclosed. The degassing device may comprise an inlet chamber with an inlet opening, an outlet chamber with an outlet opening, and a degassing opening. A hydrophilic membrane and a hydrophobic membrane, wherein the hydrophilic membrane fluidically couples the inlet chamber with the outlet chamber, enabling a transfer of liquid from the inlet chamber to the outlet chamber. The hydrophobic membrane fluidically couples the inlet chamber with the degassing opening, enabling a transfer of gas from the inlet chamber to the degassing opening. The hydrophilic and hydrophobic membranes being joined along a joint to establish a joined membrane, such that a contact line of a liquid-gas phase separation on the joined membrane does not coincide with the joint independent of an orientation of the degassing device with respect to gravity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.