Patent US1259309A successfully refreshed from Google Patents.
Patent US4219016A successfully refreshed from Google Patents.
US4219016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaginal contraceptive
Assignee: Procter and Gamble Co
•
Filing: 1978-12-07
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Granted: 1980-08-26
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Expires: 1998-12-07
Abstract
Abstract Improved devices which can be retained in the vagina during intercourse deliver spermicidal surfactants and provide contraceptive benefits.
Inventors
- 👤 James L. Drobish
- 👤 Thomas W. Gougeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
111 words
A contraceptive device especially adapted for use within the vaginal cavity at a position posterior to the introitus and with a face in close proximity to the cervical os, characterized by: vaginal retaining means having affixed thereto one or more container having walls, at least a portion of the walls comprising a substantially non-porous, semi-permeable membrane, said containers holding a reservoir of spermicide comprising an aqueous solution of a micelle-forming spermicidal surfactant compound at a concentration at or above the critical micelle concentration of said surfactant compound, said membrane-walled containers being maintained in position in the device by positioning means, thereby providing a transport surface on the face of the device.
Claim 2
Dependent Claim
111 words
A contraceptive device especially adapted for use within the vaginal cavity at a position posterior to the introitus and with a face in close proximity to the cervical os, characterized by: vaginal retaining means having affixed thereto one or more container having walls, at least a portion of the walls comprising a substantially non-porous, semi-permeable membrane, said containers holding a reservoir of spermicide comprising an aqueous solution of a micelle-forming spermicidal surfactant compound at a concentration at or above the critical micelle concentration of said surfactant compound, said membrane-walled containers being maintained in position in the device by positioning means, thereby providing a transport surface on the face of the device.
Claim 3
Dependent Claim
18 words
A device according to claim 1 wherein the transport surface extends substantially across the face of the device.
Claim 4
Dependent Claim
9 words
A device according to claim 1 which is disc-shaped.
Claim 5
Dependent Claim
18 words
A device according to claim 3 wherein the transport surface extends substantially across the face of the device.
Claim 6
Dependent Claim
21 words
A device according to claim 1 which is domed, whereby the device can be positioned is substantially cap the cervical os.
Claim 7
Dependent Claim
11 words
A device according to claim 3 which is a dome-shaped disc.
Claim 8
Dependent Claim
18 words
A device according to claim 6 wherein the transport surface extends substantially across the face of the device.
Claim 9
Dependent Claim
24 words
A device according to claim 1 wherein only the container walls which face the cervical os comprise the substantially non-porous, semi-permeable membrane transport surface.
Claim 10
Dependent Claim
24 words
A device according to claim 8 wherein the membrane has a thickness in the range of from about 0.02 mm to about 0.6 mm.
Claim 11
Dependent Claim
18 words
A device according to claim 1 wherein all container walls comprise the substantially non-porous, semi-permeable membrane transport surface.
Claim 12
Dependent Claim
24 words
A device according to claim 10 wherein the membrane has a thickness in the range of from about 0.02 mm to about 0.6 mm.
Claim 13
Dependent Claim
15 words
A device according to claim 1 wherein the semi-permeable membrane comprises a pharmaceutically-acceptable silicone polymer.
Claim 14
Dependent Claim
17 words
A device according to claim 12 wherein the silicone polymer is substantially free from color-forming curing agents.
Claim 15
Dependent Claim
30 words
A device according to claim 1 wherein the spermicidal surfactant compound is a nonionic surfactant selected from ethylene oxide condensates of aliphatic alcohols and ethylene oxide condensates of alkyl phenols.
Claim 16
Dependent Claim
24 words
A device according to claim 14 wherein the surfactant compound is characterized by a critical micelle concentration of at most about 5×10 -3 Molar.
Claim 17
Dependent Claim
24 words
A device according to claim 15 wherein the surfactant compound is C 10 EO 5 , C 10 EO 6 , or mixtures thereof.
Claim 18
Dependent Claim
81 words
A contraceptive device according to claim 1, comprising: a double-walled, dome-shaped disc suitable for capping the cervical os, at least one wall of said disc comprising a non-porous, semi-permeable membrane transport surface having a thickness in the range of from about 0.1 mm to about 0.4 mm, said walls being sealed together to provide containers, said containers holding an aqueous solution comprising from about 10% to about 50% by weight of C 10 EO 5 or C 10 EO 6 .
Claim 19
Dependent Claim
13 words
A device according to claim 17 wherein the membrane is a silicone polymer.
Claim 20
Dependent Claim
17 words
A device according to claim 18 wherein the silicone polymer is substantially free from color-forming curing agents.
Claim 21
Dependent Claim
24 words
A device according to claim 14 wherein the walls are sealed together around their peripheral edges to provide retaining means comprising a dimensionally-stable rim.
Claim 22
Dependent Claim
19 words
A device according to claim 20 wherein only the transport surface facing the cervical os comprises the semi-permeable membrane.
Claim 23
Dependent Claim
21 words
A device according to claim 21 wherein the membrane is a silicone polymer which is substantially free from color-forming curing agents.
Claim 24
Dependent Claim
11 words
A device according to claim 20 wherein the membrane is rubber.
Claim 25
Dependent Claim
30 words
A dome-shaped device according to claim 17 wherein the outer dome-shaped wall comprises a dimensionally-stable, non-permeable retaining means and wherein the inner wall comprises the non-porous, semi-permeable membrane transport surface.
Claim 26
Dependent Claim
21 words
A device according to claim 24 wherein the membrane is a silicone polymer which is substantially free from color-forming curing agents.
Claim 27
Dependent Claim
11 words
A device according to claim 24 wherein the membrane is rubber.
Claim 28
Independent Claim
148 words
A method for achieving contraception in the vagina, comprising: inserting within the vaginal cavity at a position posterior to the introitus and with a face in close proximity to the cervical os a device characterized by: vaginal retaining means having affixed thereto one or more containers having walls, at least a portion of the walls comprising a substantially nen-porous, semi-permeable membrane, said containers holding a reservoir of spermicide comprising an aqueous solution of a micelle-forming spermicidal surfactant compound at a concentration at or above the critical micelle concentration of said surfactant compound, said membrane-walled containers being maintained in position in the device by positioning means, thereby providing a transport surface on the face of the device, and placing the device so that the transport surface substantially covers the cervical os, whereby surfactant monomers diffuse from the device and substantialy bathe the cervical os to provide a spermicidal effect.
Claim 29
Independent Claim
148 words
A method for achieving contraception in the vagina, comprising: inserting within the vaginal cavity at a position posterior to the introitus and with a face in close proximity to the cervical os a device characterized by: vaginal retaining means having affixed thereto one or more containers having walls, at least a portion of the walls comprising a substantially nen-porous, semi-permeable membrane, said containers holding a reservoir of spermicide comprising an aqueous solution of a micelle-forming spermicidal surfactant compound at a concentration at or above the critical micelle concentration of said surfactant compound, said membrane-walled containers being maintained in position in the device by positioning means, thereby providing a transport surface on the face of the device, and placing the device so that the transport surface substantially covers the cervical os, whereby surfactant monomers diffuse from the device and substantialy bathe the cervical os to provide a spermicidal effect.
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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) | 1983-08-26 | 1984-02-25 | 1984-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-26 | 1988-02-25 | 1988-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-26 | 1992-02-25 | 1992-08-26 | $7700.00 | Window Closed / Lapsed |