US3908646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric loop intrauterine device
Assignee: Individual
•
Filing: 1974-03-27
•
Granted: 1975-09-30
•
Expires: 1994-03-27
Abstract
Abstract An intrauterine device comprising two concentric generally circular rings formed of elastic, inert plastic material coupled by a plurality of bridges of similar material. The material is elastically deformed during insertion into the uterine cavity by a specially formed applicator, and magnetic material is imbedded in a normally coiled tab associated with the inner of the two rings for subsequent removal by magnetic extractor means.
Inventors
- 👤 Amir H Ansari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:16
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/18; A61F6/142; A61F6/148
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
123 words
An intrauterine device adapted to be inserted in the female uterine cavity comprising a member made of elastic substantially inert material, said member including generally concentric inner and outer rings coupled by a plurality of connector bridges, and means formed of magnetic material carried in said device, said device being capable of deformation for insertion through the cervical canal into said cavity where it regains its original form when released therein and of removal by magnetic coupling with magnetic extractor means, a tab integrally joined at one end thereof to said member and normally coiled therewithin, with said magnetic material being carried by the free end of said tab for extension of the tab and removal of the member by the extractor means.
Claim 2
Dependent Claim
123 words
An intrauterine device adapted to be inserted in the female uterine cavity comprising a member made of elastic substantially inert material, said member including generally concentric inner and outer rings coupled by a plurality of connector bridges, and means formed of magnetic material carried in said device, said device being capable of deformation for insertion through the cervical canal into said cavity where it regains its original form when released therein and of removal by magnetic coupling with magnetic extractor means, a tab integrally joined at one end thereof to said member and normally coiled therewithin, with said magnetic material being carried by the free end of said tab for extension of the tab and removal of the member by the extractor means.
Claim 3
Dependent Claim
15 words
The device of claim 1, wherein said tab is integrally joined to said inner ring.
Claim 4
Dependent Claim
15 words
The device of claim 2, wherein said tab is normally coiled within said inner ring.
Claim 5
Dependent Claim
14 words
The device of claim 1, wherein said elastic substantially inert material comprises silico-organic rubber.
Claim 6
Dependent Claim
11 words
The device of claim 1, wherein said rings comprise circular rings.
Claim 7
Dependent Claim
15 words
The device of claim 1, wherein said plurality of connector bridges comprise four connector bridges.
Claim 8
Dependent Claim
17 words
The device of claim 1, wherein said ring, connector bridges and nomally coiled Tab are substantially coplanar.
Claim 9
Dependent Claim
129 words
An intrauterine device adapted to be inserted in the female uterine cavity comprising a body made of an elastic substantially inert material, said body including concentric inner and outer rings coupled by a plurality of connector bridges, magnetic material embedded within at least a portion of said material, said portion being sufficiently deformable that it is readily removable from the uterine cavity by engagement of the magnetic material with a magnetic probe; said portion having sufficient resiliency that it assumes a natural shape when in the uterine cavity by which irritation and side affects are avoided; and further comprising a normally coiled resilient tab having one end integral with one of said rings, said tab having a free end, and the magnetic material being at said tab free end.
Claim 10
Dependent Claim
129 words
An intrauterine device adapted to be inserted in the female uterine cavity comprising a body made of an elastic substantially inert material, said body including concentric inner and outer rings coupled by a plurality of connector bridges, magnetic material embedded within at least a portion of said material, said portion being sufficiently deformable that it is readily removable from the uterine cavity by engagement of the magnetic material with a magnetic probe; said portion having sufficient resiliency that it assumes a natural shape when in the uterine cavity by which irritation and side affects are avoided; and further comprising a normally coiled resilient tab having one end integral with one of said rings, said tab having a free end, and the magnetic material being at said tab free end.
Claim 11
Dependent Claim
14 words
The device of claim 8, wherein said elastic substantially inert material comprises silico-organic rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |