Apparatus for the in vivo treatment of blood containing harmful components resulting from chronic uremia and other conditions
Abstract
Abstract Harmful components resulting from chronic uremia and other conditions are removed from blood by flowing the blood through a conduit comprising a semi-permeable membrane capable of selectively passing bodies of low molecular weight. The conduit has in direct contact with its exterior surface a predetermined quantity of a finely divided solid material capable of reacting with the harmful components. Where the latter result from chronic uremia and include excess water, the finely divided solid material comprises a desiccant, in particular cross-linked dextran. Where the harmful components comprise salicylates, barbiturates and the like, the solid material comprises a solid adsorbent such as charcoal. In either case, the solid material collects the harmful components and thus decreases their concentration in the blood.
Inventors
- 👤 C Grossman
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |