Injection method for microfluidic chips
US7927476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2008 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Aug 6, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D57/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems for injecting a sample during electrophoresis, that generally comprise: loading a sieving matrix through a first end of a separation channel; having the an end of the sieving matrix at a set distance from the intersection of the separation channel and a loading channel; pressure loading a sample through the loading channel and filling an empty portion of the separation channel; applying an electric field across the separation channel while flowing a washing buffer through the loading channel; and injecting a portion of the sample into the separation channel, wherein the portion of the sample injected is of a size that is determined by a distance between the end of the sieving matrix and the intersection of the loading and separation channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.