Method and apparatus for controlling magnetic particles by pipetting machine
US6509193B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1999 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Apr 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method and apparatus for controlling magnetic particles by a sample distributor and is intended to process a sample liquid with high precision, sensitivity and reliability by arresting magnetic particles to separate them from the liquid and by suspending the magnetic particles in a liquid to mix the magnetic particles with the liquid again.The pipette portion of this invention has a front end portion, a reservoir portion, a liquid passage connecting the front end portion and the reservoir portion, and a separation region in the liquid passage that is subjected to a magnetic field. The pipette portion of this construction draws in or discharges a liquid for processing. This invention includes a process in which when a magnetic particle-suspended liquid is passed through the separation region of the pipette portion, a magnetic field is applied to the separation region from outside the liquid passage to attract the magnetic particles to the inner surface of the liquid passage, thereby separating the magnetic particles from the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.