Oxygenator
Abstract
Abstract AN OXYGENATOR PRIMARILY FOR HUMAN BLOOD HAS A FIRST STATIONARY UNIT WITH A FIRST SUBSTANTIALLY FLAT WALL AND A SECOND MOVABLE UNIT WITH A SECOND SUBSTANTIALLY FLAT WALL FACING THE FIRST WALL. ON THEIR FACING SIDES BOTH WALLS HAVE SUPPORTS HIGHLY PERMEABLE TO GAS. THE SUPPORTS ARE COVERED BY GAS PERMEABLE, HYDROPHOBIC MEMBRANCES BETWEEN THEM DEFINING A PASSAGE FOR LIQUID. SEVERAL OF THE FIRST UNITS AND SECOND UNITS ARE SANWICHED TO MAKE THE PASSAGE LONG AND TORTUOUS OR SINUOUS. BLOOD FLOWING THROUGH THE PASSAGE IS PERFUSED BY OXYGEN FLOWING IN THROUGH THE PERMEABLE SUPPORTS AND THE MEMBRANES AND GIVES UP CARBON DIOXIDE FLOWING OUT THROUGH THE MEMBRANES AND SUPPORTS. THE GAS TRANSPORT INTO AND OUT OF THE BLOOD IS ENHANCED BY ROTATING THE UNITS RELATIVE TO EACH OTHER. THIS PRODUCES FAIRLY REGULAR VORTICAL MOTION OF THE BLOOD AND REDUCES THE THICKNESS OF THE BOUNDARY LAYER OF THE BLOOD.
Inventors
- 👤 Sotiris S Kitrilakis
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |