US4564362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaginal device
Assignee: Individual
•
Filing: 1983-07-07
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Granted: 1986-01-14
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Expires: 2003-07-07
Abstract
Abstract A vaginal device adapted for use as a disposable female contraceptive or as a disposable article for controllably dispensing drugs is provided comprising an outermost layer of resilient, compressible open-celled polymeric foam. Affixed to the outermost foam layer is a non-porous film layer made of a liquid proof, soft elastomeric material. Affixed to the non-porous film layer is another layer of open-celled polymeric foam. The intermediate film layer provides a barrier between the two foam layers. The outermost and innermost foam layers are formed from foams differing basically in density and/or number of pores per inch, with the more dense or smaller pored foam constituting the outermost layer, the outermost layer being adapted to lie against the cervix of the uterus and block the upper vaginal vault.
Inventors
- 👤 Michael S. Burnhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:30
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/08; A61K; A61K9/00; A61K9/0012; A61K9/0034; A61K9/0036; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
A vaginal device consisting essentially of an outermost layer of resilient compressible open-celled polymeric foam, a non-pororous barrier film layer formed of a liquid proof, soft elastomeric material affixed to said outermost foam layer and a second layer of open-celled polymeric foam affixed to the opposite surface of said non-porous film layer, said outermost and innermost foam layers differing in density and/or numbers of pores per inch with the more dense or smaller pored foam layer constituting the outermost layer, said outermost layer forming an expansion collar and being adapted to lie against the cervix of the uterus, where it aids in holding and securing the device in position and additionally reinforces the barrier effect of the film and innermost foam layer.
Claim 2
Dependent Claim
122 words
A vaginal device consisting essentially of an outermost layer of resilient compressible open-celled polymeric foam, a non-pororous barrier film layer formed of a liquid proof, soft elastomeric material affixed to said outermost foam layer and a second layer of open-celled polymeric foam affixed to the opposite surface of said non-porous film layer, said outermost and innermost foam layers differing in density and/or numbers of pores per inch with the more dense or smaller pored foam layer constituting the outermost layer, said outermost layer forming an expansion collar and being adapted to lie against the cervix of the uterus, where it aids in holding and securing the device in position and additionally reinforces the barrier effect of the film and innermost foam layer.
Claim 3
Dependent Claim
31 words
A vaginal device according to claim 1, being cylindrical in shape and having a diameter of about 11/2 to about 3 3/5 inches and a depth of about 1/214 21/2 inches.
Claim 4
Dependent Claim
27 words
A vaginal device according to claim 1 being circular in shape and having a diameter of about 2 3/5 inches and a depth of about 3/4 inches.
Claim 5
Dependent Claim
26 words
A vaginal device according to claim 2 wherein said innermost and outermost layers each have a thickness of from about 1/8 inch to about 13/4 inches.
Claim 6
Dependent Claim
25 words
A vaginal device according to claim 3 wherein said outermost layer is about 5/8 inch thick and said innermost layer is about 1/8 inch thick.
Claim 7
Dependent Claim
22 words
A vaginal device according to claim 1 wherein said intermediate film layer has a thickness of about 0.5 to about 3 mils.
Claim 8
Dependent Claim
21 words
A vaginal device according to claim 1 wherein said polymeric foams are formed from polyurethane, polyester, polyether, polyethylene or combinations thereof.
Claim 9
Dependent Claim
13 words
A vaginal device according to claim 1, wherein said foams are open-celled foams.
Claim 10
Dependent Claim
16 words
A vaginal device according to claim 8, wherein said foams have 80-200 pores per square inch.
Claim 11
Dependent Claim
23 words
A vaginal device according to claim 1, wherein said non-porous film layer is made of natural rubber, synthetic rubber or a latex material.
Claim 12
Dependent Claim
30 words
A vaginal device according to claim 1, adapted for use as a female disposable contraceptive wherein at least one of said polymeric foam layers has incorporated therein a contraceptive agent.
Claim 13
Dependent Claim
13 words
A vaginal device according to claim 11, wherein said contraceptive agent is nonoxynol-9.
Claim 14
Dependent Claim
52 words
A vaginal device according to claim 1, adapted for use for controllably dispensing medicaments wherein at least one of said polymeric foam layers has incorporated therein at least one member of the group of anti-infection agents, antimicrobials, hormones, enzymes, psychotropic drugs, cardiac drugs, analgesics, blood pressure regulators, smooth muscle relaxants and anti-emetics.
Claim 15
Dependent Claim
18 words
A vaginal device according to claim 1, wherein said device includes means for facilitating its removal after use.
References Cited (Backward Citations)
US2319481A
Cited
US2541103A
Cited
US2759931A
Cited
US2774709A
Cited
US2902484A
Cited
US2927110A
Cited
US3084689A
Cited
US3762414A
Cited
US4393871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |