Apparatus for method for expressing fluid materials
US7425192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2004 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | May 19, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3393
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for selectively expressing one or more selected fluid materials out of a fluid container, including a centrifuge rotor having a round centrifuge chamber of selected volume, a round expandable enclosure disposed within the centrifuge chamber having a rotation axis coincident with the central rotation axis and a flexible wall, a pump for controllably pumping a selected volume of expressor fluid into and out of the expandable enclosure wherein the fluid container is receivable with the centrifuge chamber, and a retaining mechanism for holding the fluid container within the centrifuge chamber in a coaxial position. The flexible wall of the fluid container is in contact with the flexible wall of the expandable enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.