Microfluidic osmotic pump
US8394644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2007 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A micro-fluidic osmotic pump capable of delivering a desired fluid at a predetermined destination comprising an inside fluid reservoir housing a compressible sac, a surrounding compartment having an external surface made up of a semi-permeable membrane and a fluid duct. The inside fluid reservoir houses a compressible sac containing a predetermined amount of a fluid that is desired to be pumped to a predetermined destination. The surrounding compartment holds a desired osmotic agent and its saturated solution in the remaining volume thereof. The surrounding compartment has an outer surface made up of a semi-permeable membrane that allows a predetermined second external fluid to permeate into the surrounding compartment. The fluid duct is substantially housed within the inside fluid reservoir and runs through openings and respectively provided through the inside fluid reservoir and the surrounding compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.