Apparatus and method for dispensing phases of blood
US5211310A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A disposable apparatus to dispense an amount of liquid from a closed container such as a stoppered blood collection tube is described. The apparatus comprises a stopper piercing element to access the interior of a closed blood collection tube; a gas passage to allow a metered amount of gas to be forced into the blood collection tube; and, a liquid passage to allow fluid to be dispensed from the tube in proportion to the amount of gas forced into the tube. Also described is a machine which uses a disposable apparatus to dispense liquid from a sequence of closed blood collection tubes in a automated manner. Liquid contained within a blood collection tube is dispensed from the tube by a control system according to signals indicative of the amount of liquid that is desired to be dispensed. A manually operated machine that uses the disposable apparatus to dispense a sample of liquid from a closed blood collection tube is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.