Bubbler assembly for blood treating apparatus
Abstract
Abstract A BUBBLER ASSEMBLY FOR USE IN A BLOOD TREATING APPARATUS SUCH AS A BLOOD OXYGENATOR FOR FORMING FILMS OF BLOOD IN BUBBLE FORM BY DIRECTING OXYGEN INTO A STREAM OF VENOUS BLOOD TO EFFECTUATE TRANSFER OF OXYGEN TO THE BLOOD FILM AND RELEASE OF CARBON DIOXIDE FROM THE BLOOD FILM. THE BUBBLER ASSEMBLY IS CHARACTERIZED BY AN IMPROVED ARRANGEMENT OF THE BLOOD PASSAGEWAY WHICH IS GENERALLY S-SHAPED IN NATURE; BY A COMPLETELY SMOOTH INTERIOR WHICH ELIMINATES SHARP EDGES; BY AN IMPROVED OUTLET STRUCTURE WHEREBY BLOOD BUBBLES EMPTY OUTWARDLY AND DOWNWARDLY ON A DEFLECTOR PLATE FOR MORE UNIFORM DISTRIBUTION OF BLOOD THROUGH AN ENVELOPING DEFOAMER UNIT; AND BY AN IMPROVED EXTERIOR CONFIGURATION HAVING RECESSED SIDE PORTIONS RELATIVE TO ADJACENT TOP AND BOTTOM STRUCTURE BY MEANS OF WHICH A GREATER PORTION OF THE DEFOAMER SLEEVE IS HELD RELATIVELY SPACED FROM THE BUBBLER STRUCTURE TO ELIMINATE OBSTRUCTIONS TO THE FLOW OF BUBBLES PASSING OUT OF THE BUBBLER UNIT AND TO EXPOSE A GREATER AREA OF THE DEFOAMER SLEEVE TO THE BLOOD.
Inventors
- 👤 Donald J Bentley
- 👤 Richard A De Wall
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |