Medical diagnostic device with enough-sample indicator
US6261519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluidic medical diagnostic device permits measurement of analyte concentration or a property of a biological fluid, particularly the coagulation time of blood. The device has at one end a sample port for introducing a sample and at the other end a bladder for drawing the sample to a measurement area. A first channel carries the sample from the sample port to the measurement area, and a stop junction, between the measurement area and bladder, halts the sample flow. A second channel, which runs from the first channel to an edge of the device, determines whether the sample volume is sufficient to permit an accurate measurement. The desired measurement can be made by placing the device into a meter, which measures a physical property of the sample, typically optical transmittance, after it has interacted with one or more reagents on the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.