US5156164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iodine contraceptive sponge
Assignee: Individual
•
Filing: 1991-02-04
•
Granted: 1992-10-20
•
Expires: 2011-02-04
Abstract
Abstract A bacteriocidal virocidal sponge containing iodine and a surfactant which can be used as a contraceptive and as therapy for vaginitis. It consists of a polyurethane open cell foam impregnated with a surfactant and iodine. A bactericidal tampon containing an iodophor does not induce toxic shock syndrome.
Inventors
- 👤 Harry H. Leveen
- 👤 Robert F. Leveen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0034; A61K9/0036; A01; A01N; A01N25/00; A01N25/16; A01N25/34; A61L; A61L15/00; A61L15/16; A61L15/18; A61L15/42; A61L15/48
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A bactericidal spermicidal sponge member for insertion into the vagina in the form of an open cell foam impregnated with an iodine polyurethane complex and containing a nonionic spermicidal surfactant, said foam continuously liberating free iodine into the human body in a concentration ranging from 2 to 5 parts per million.
Claim 2
Dependent Claim
51 words
A bactericidal spermicidal sponge member for insertion into the vagina in the form of an open cell foam impregnated with an iodine polyurethane complex and containing a nonionic spermicidal surfactant, said foam continuously liberating free iodine into the human body in a concentration ranging from 2 to 5 parts per million.
Claim 3
Dependent Claim
29 words
A spermicidal sponge member as claimed in claim 1 wherein said sponge comprises a hat shaped configuration comprising a body with a circular rim with a concave interior portion.
Claim 4
Dependent Claim
14 words
A spermicidal sponge member as claimed in claim 1 wherein said surfactant is nonoxynol.
Claim 5
Dependent Claim
31 words
A sponge member as claimed in claim 1 wherein said sponge contains nonoxynol and iodine with 20 to 40 mg iodine deposited on the sponge for each gram of nonoxynol deposited.
Claim 6
Dependent Claim
27 words
A sponge member as claimed in claim 1 wherein said open cell foam is treated with a solution of elemental iodine dissolved in a non ionic surfactant.
Claim 7
Dependent Claim
32 words
A sponge member as claimed in claim 5 wherein said surfactant is an acid solution ranging from 5 to 20 milligrams is added to the sponge to keep the vaginal secretions acid.
Claim 8
Dependent Claim
25 words
A sponge member as claimed in claim 6 wherein said acid solution is polyacrylic acid and the amount added ranges from 5 to 20 milligrams.
Claim 9
Dependent Claim
63 words
A contraceptive device for women comprising a sponge member formed of a polyether open cell foam complexed with iodine and a surfactant means in an aqueous medium to enhance the spermicidal effect of the iodine, said sponge member additionally containing polyacrylic acid to restore vaginal acidity and being bactericidal, spermicidal and viricidal and continuously liberating free iodine into the human body after insertion.
Claim 10
Dependent Claim
63 words
A contraceptive device for women comprising a sponge member formed of a polyether open cell foam complexed with iodine and a surfactant means in an aqueous medium to enhance the spermicidal effect of the iodine, said sponge member additionally containing polyacrylic acid to restore vaginal acidity and being bactericidal, spermicidal and viricidal and continuously liberating free iodine into the human body after insertion.
Claim 11
Dependent Claim
53 words
A contraceptive device for women comprising a circular shaped sponge member, said sponge member being formed of a polyether open cell foam complexed with iodine and a nonionic spermicidal surfactant, said sponge member additionally containing polyacrylic acid and being bactericidal, viricidal and spermicidal and continuously liberating iodine into the human body after insertion.
Claim 12
Dependent Claim
53 words
A contraceptive device for women comprising a circular shaped sponge member, said sponge member being formed of a polyether open cell foam complexed with iodine and a nonionic spermicidal surfactant, said sponge member additionally containing polyacrylic acid and being bactericidal, viricidal and spermicidal and continuously liberating iodine into the human body after insertion.
References Cited (Backward Citations)
US3993073A
Cited
DE2355895A1
Cited
US4344930A
Cited
US4393871A
Cited
FR2395746A1
Cited
US4309997A
Cited
US4292965A
Cited
US4381380A
Cited
US4551148A
Cited
US4784989A
Cited
US4553972A
Cited
US4483771A
Cited
US4661101A
Cited
US4731391A
Cited
US4957119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |