Device for suppressing fertility
Abstract
Abstract FERTILITY SUPPRESSION IN A FEMALE MAMMAL IS ACHIEVED WITH A DEVICE FOR INSERTION AND RETENTION IN THE UTERUS IN THE FORM OF FLEXIBLE, RESILIENT BODY OF POLYMERIC MATERIAL HAVING AN ELASTIC MEMORY. THE BODY HAS AN ELLIPSOIDAL SHAPE AND A FLUTED SURFACE. WHEN INSERTED INTO THE UTERINE CAVITY IN A COMPACTED STATE, THE BODY ASSUMES AN ELLIPSOIDAL CONFIGURATION. PREFERABLY, THE DEVICE CONTAINS A PROGESTATIONAL ANTI-FERTILITY AGENT, MOST PREFERABLY PROGESTERONE, AND IS PERMEABLE TO PASSAGE OF THE PROGESTATIONAL ANTI-FERTILITY AGENT AT A LOW RATE. UPON INSERTION IN THE UTERUS, THE DEVICE RELEASES A FERTILITY SUPPRESSING AMOUNT OF THE PROGESTATIONAL ANTI-FERTILITY AGENT TO THE UTERUS.
Inventors
- 👤 A Zaffaroni
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |