Patent US3628530A successfully refreshed from Google Patents.
US3628530A
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US
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Intrauterine device for contraception
Assignee: Individual
•
Filing: 1969-03-24
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Granted: 1971-12-21
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Expires: 1989-03-24
Abstract
Abstract An intrauterine device (I.U.D.) for contraception is provided which is comprised of a plurality of rodlike members made of a soft, inert plastic. One end of each of the rodlike members is joined at a common junction to define, in an expanded condition, an upwardly diverging cone having an envelope that is oval shaped in transverse cross section. The rodlike members may be of equal or unequal lengths and may have irregularly spaced nodules formed thereon. A heat soluble gelation cap may be used to hold the rodlike members in a collapsed condition prior to insertion of the I.U.D.
Inventors
- 👤 Jerome Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:11
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
84 words
An intrauterine device for contraception comprising a plurality of flexible rodlike members, juncture means securing said rodlike members at one end thereof to each other at a common joint, each member terminating in an enlarged portion at the free end thereof, said rodlike members further having included thereon a plurality of nodules formed integrally along the said rodlike members, said nodules being irregularly spaced relative to said juncture means, and said device being substantially conical in elevation and oval shaped in transverse cross section.
Claim 2
Dependent Claim
84 words
An intrauterine device for contraception comprising a plurality of flexible rodlike members, juncture means securing said rodlike members at one end thereof to each other at a common joint, each member terminating in an enlarged portion at the free end thereof, said rodlike members further having included thereon a plurality of nodules formed integrally along the said rodlike members, said nodules being irregularly spaced relative to said juncture means, and said device being substantially conical in elevation and oval shaped in transverse cross section.
Claim 3
Dependent Claim
14 words
The device in accordance with claim 1 wherein said rodlike members are substantially straight.
Claim 4
Dependent Claim
22 words
The device in accordance with claim 1 wherein at least the portion of said rodlike members adjacent said juncture means is convex.
Claim 5
Dependent Claim
15 words
The device in accordance with claim 1 wherein said rodlike members are of equal length.
Claim 6
Dependent Claim
15 words
The device in accordance with claim 1 wherein said rodlike members are of unequal length.
Claim 7
Dependent Claim
25 words
The device in accordance with claim 1 wherein there is further included means for detecting the presence of said device subsequent to the insertion thereof.
Claim 8
Dependent Claim
15 words
The device in accordance with claim 6 wherein said detecting means comprises a metal insert.
Claim 9
Dependent Claim
16 words
The device in accordance with claim 1 wherein said detecting means comprises a ferrous metal insert.
Claim 10
Dependent Claim
16 words
The device in accordance with claim 6 wherein said detecting means comprises a radio opaque substance.
Claim 11
Dependent Claim
15 words
The device in accordance with claim 9 wherein said radio opaque substance is barium chloride.
Claim 12
Dependent Claim
43 words
The device in accordance with claim 1 wherein there is further included a nontoxic, soluble retaining member positioned about the end of said rodlike members opposite said juncture means to thereby maintain said rodlike members in a collapsed condition prior to insertion thereof.
Claim 13
Dependent Claim
17 words
The device in accordance with claim 11 wherein said retaining member is a heat soluble gelation cap.
Claim 14
Dependent Claim
21 words
The device in accordance with claim 1 wherein at least said rodlike members are fabricated from a nontoxic, soft plastic material.
Claim 15
Dependent Claim
14 words
The device in accordance with claim 13 wherein said material is ethylene-vinyl acetate copolymer.
Claim 16
Dependent Claim
12 words
The device in accordance with claim 13 wherein said material is polyethylene.
Claim 17
Dependent Claim
9 words
The device of claim 1 including a presence-detecting means.
Claim 18
Dependent Claim
18 words
The device of claim 16 wherein said presence-detectiNg means is a flexible filament extending from said juncture means.
Claim 19
Dependent Claim
15 words
The device of claim 16 wherein said presence-detecting means is a radiant energy opaque material.
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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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |