Depositing fluid specimens on substrates, resulting ordered arrays, techniques for analysis of deposited arrays
US6722395B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 21, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For depositing fluid dots in an array, e.g., for microscopic analysis, a deposit device, e.g. a pin, cooperating with a fluid source defines a precisely sized drop of fluid of small diameter on a drop carrying surface. Transport mechanism positions the device precisely over the receiving surface and drive mechanism moves the deposit device toward and away from the surface. By repeated action, minute drops of fluid can be deposited precisely in a dense array, preferably under computer control. The drop-carrying surface shown has a diameter less than 375, preferably less than 300, preferably between about 15 and 250 micron, and is bound by a sharp rim that defines the perimeter of the fluid drop. The deposit device is compliant in the direction of deposition motion, e.g. by overcoming resistance of a resilient member. When depositing, the deposit device is laterally constrained to a reference position, e.g. by flexure mounting or the deposit device is mounted to displace from its mounting upon engagement with the receiving surface, and is subject to a lateral force or turning moment that engages the device with a lateral reference surface. A mobile-fluid storage device resupplies the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.