US4286587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaginal drug delivery system made from polymer
Assignee: Alza Corp
•
Filing: 1980-01-21
•
Granted: 1981-09-01
•
Expires: 2000-01-21
Abstract
Abstract An intravaginal therapeutic system for the pre-programmed, unattended delivery of a drug is disclosed. The system comprises (a) a drug, (b) a delivery module comprising a reservoir for storing the drug in an amount for execution of the program, a rate controller which maintains the rate of drug delivered in a therapeutically effective amount throughout the life of the system, an energy source for transferring drug from the reservoir to the vagina, and a portal for releasing the drug from the module to the vagina, (c) a platform which integrates the module into a unit sized, shaped and adapted for insertion and retention in a vagina, and (d) therapeutic program which provides for the controlled release of drug to produce a beneficial effect over a prolonged period of time.
Inventors
- 👤 Patrick S. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:57
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0034; A61K9/0036; A61F; A61F6/00; A61F6/06; A61F6/08
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
161 words
A method for delivering a drug to a vagina, said method comprising the steps of: a. positioning in a vagina a device for delivering a drug, said device consisting essentially of: 1. a continuous curved shaped body sized and adapted for easy positioning and comfortable retention in a vagina, said body consisting of; 2. a wall formed of a non-toxic tubular shaped, thermoplastic moldable polymeric material, united at its ends by a coupling placed in the tubular wall in mated relation with the inside of the wall to form as essentially liquidtight union, which wall surrounds and defines; 3. an internal reservoir; 4. a drug housed in the reservoir in an amount for performing a therapeutic program; 5. a carrier for the drug in the reservoir; and b. delivering the drug at a preprogrammed, unattended continuous and controlled rate through the wall in a therapeutically effective amount to a vagina over a prolonged period of time for performing the therapeutic program.
Claim 2
Independent Claim
161 words
A method for delivering a drug to a vagina, said method comprising the steps of: a. positioning in a vagina a device for delivering a drug, said device consisting essentially of: 1. a continuous curved shaped body sized and adapted for easy positioning and comfortable retention in a vagina, said body consisting of; 2. a wall formed of a non-toxic tubular shaped, thermoplastic moldable polymeric material, united at its ends by a coupling placed in the tubular wall in mated relation with the inside of the wall to form as essentially liquidtight union, which wall surrounds and defines; 3. an internal reservoir; 4. a drug housed in the reservoir in an amount for performing a therapeutic program; 5. a carrier for the drug in the reservoir; and b. delivering the drug at a preprogrammed, unattended continuous and controlled rate through the wall in a therapeutically effective amount to a vagina over a prolonged period of time for performing the therapeutic program.
Claim 3
Dependent Claim
26 words
A method for delivering a drug to a vagina according to claim 1 wherein the coupling is made of the same polymeric material forming the device.
Claim 4
Dependent Claim
30 words
A method for delivering a drug to a vagina according to claim 1 wherein the coupling is made of a different polymeric material than the material that forms the device.
Claim 5
Dependent Claim
20 words
A method for delivering a drug to a vagina according to claim 1 wherein the coupling is a solid insert.
Claim 6
Dependent Claim
27 words
A method for delivering a drug to a vagina according to claim 1 wherein the coupling has passageway therethrough for the carrier to flow in the reservoir.
Claim 7
Dependent Claim
43 words
A method for delivering a drug to a vagina according to claim 1 wherein the device at its maximum dimensions measures from a loci on its curved body to a loci on its distant curved body of from 0.4 cm to 16 cm.
Claim 8
Dependent Claim
27 words
A method for delivering a drug to a vagina according to claim 1 wherein the device annular shaped for easy positioning and comfortable retention in the vagina.
Claim 9
Dependent Claim
32 words
A method for delivering a drug to a vagina according to claim 1 wherein the device is a single annular shaped body adapted for easy positioning and comfortable retention in the vagina.
Claim 10
Dependent Claim
23 words
A method for delivering a drug to a vagina according to claim 1 wherein the carrier is a liquid carrier for the drug.
Claim 11
Dependent Claim
175 words
A vaginal device for delivering drugs, said device consisting essentially of: a. a closed, curved body sized and shaped as a platform adapted for easy insertion and comfortable retention in a vagina, said body consisting essentially of: b. a wall formed of a tubular shaped, non-toxic, thermoplastic, moldable polymeric material united at its ends by a coupling inserted in the tubular wall and having a diameter approximately equivalent to the inside diameter of the tubular wall, to form an essentially liquid impervious union, with the wall surrounding and forming; c. an internal reservoir; d. a drug housed in the reservoir; e. a carrier for the drug in the reservoir; and, f. wherein, said platform at its maximum dimensions measures from a loci on its curved wall to a loci on its distant curved wall of from 0.4 cm to 16 cm, and when placed in a vagina will provide a preprogrammed, unattended continuous delivery of drug at a controlled rate and in a therapeutically effective amount to a vagina over a prolonged period of time.
Claim 12
Dependent Claim
175 words
A vaginal device for delivering drugs, said device consisting essentially of: a. a closed, curved body sized and shaped as a platform adapted for easy insertion and comfortable retention in a vagina, said body consisting essentially of: b. a wall formed of a tubular shaped, non-toxic, thermoplastic, moldable polymeric material united at its ends by a coupling inserted in the tubular wall and having a diameter approximately equivalent to the inside diameter of the tubular wall, to form an essentially liquid impervious union, with the wall surrounding and forming; c. an internal reservoir; d. a drug housed in the reservoir; e. a carrier for the drug in the reservoir; and, f. wherein, said platform at its maximum dimensions measures from a loci on its curved wall to a loci on its distant curved wall of from 0.4 cm to 16 cm, and when placed in a vagina will provide a preprogrammed, unattended continuous delivery of drug at a controlled rate and in a therapeutically effective amount to a vagina over a prolonged period of time.
Claim 13
Dependent Claim
28 words
The vaginal device for delivering drug according to claim 10 wherein the coupling inserted in the tubular wall is made of the same polymeric material forming the wall.
Claim 14
Dependent Claim
32 words
The vaginal device for delivering drug according to claim 10 wherein the coupling inserted in the tubular wall is made of a different polymeric material than the polymeric material forming the wall.
Claim 15
Dependent Claim
25 words
The vaginal device for delivering drug according to claim 10 wherein the coupling inserted in the tubular wall is made as a solid, polymer insert.
Claim 16
Dependent Claim
25 words
The vaginal device for delivering drug according to claim 10 wherein the coupling has a passageway therethrough for the carrier to flow in the reservoir.
Claim 17
Dependent Claim
23 words
The vaginal device for delivering drug according to claim 10 wherein the coupling is solvent bonded to the inside of the tubular wall.
Claim 18
Dependent Claim
20 words
The vaginal device for delivering drug according to claim 10 wherein the coupling is adhesively joined to the tubular wall.
Claim 19
Dependent Claim
18 words
The vaginal device for delivering drug according to claim 7 wherein the device is a single annular platform.
Claim 20
Dependent Claim
23 words
The vaginal device for delivering drug according to claim 7 wherein the carrier is a liquid carrier for the drug in the reservoir.
Claim 21
Independent Claim
135 words
A device for delivering a drug to a vagina, said device consisting essentially of: a. an annular ring sized and adapted for easy insertion and comfortable retention in a vagina, said ring consisting of: b. a tubular shaped wall having a pair of ends and made of a vaginally acceptable thermoplastic, moldable polymer; c. a coupling within the tubular wall at its ends and in mated relation therewith to form an end-to-end liquidtight connection; d. an internal reservoir within the tubular wall; e. a drug housed in the reservoir; f. a carrier for the drug in the reservoir; and, g. wherein, said device when in operation in a vagina will deliver drug at a preselected, unattended, continuous and controlled rate, and in a vaginally acceptable amount to the vagina over a prolonged period of time.
Claim 22
Independent Claim
135 words
A device for delivering a drug to a vagina, said device consisting essentially of: a. an annular ring sized and adapted for easy insertion and comfortable retention in a vagina, said ring consisting of: b. a tubular shaped wall having a pair of ends and made of a vaginally acceptable thermoplastic, moldable polymer; c. a coupling within the tubular wall at its ends and in mated relation therewith to form an end-to-end liquidtight connection; d. an internal reservoir within the tubular wall; e. a drug housed in the reservoir; f. a carrier for the drug in the reservoir; and, g. wherein, said device when in operation in a vagina will deliver drug at a preselected, unattended, continuous and controlled rate, and in a vaginally acceptable amount to the vagina over a prolonged period of time.
Claim 23
Dependent Claim
31 words
The device for delivering drug to a vagina according to claim 19 wherein the coupling is made from a hydrophilic polymer that swell is the presence of fluid in the reservoir.
Claim 24
Dependent Claim
30 words
The device for delivering drug to a vagina according to claim 14 wherein the carrier is a member selected from the group consisting essentially of a liquid, emulsions and glycols.
Claim 25
Dependent Claim
34 words
The device for delivering drug to a vagina according to claim 19 wherein the carrier is an oil selected from the group consisting of mineral, animal, fruit, nut, plant, sylvan, organic and inorganic oils.
Claim 26
Dependent Claim
34 words
The device for delivering drug to a vagina according to claim 19 wherein the carrier is a member selected from the group consisting of a glycol, alkylene glycol, dialkylene glycols, poly(oxyalkylene)copolymer, and mixtures thereof.
Claim 27
Dependent Claim
28 words
The device for delivering drug to a vagina according to claim 19 wherein the carrier is a member selected from the group consisting of water, saline and buffers.
Claim 28
Dependent Claim
23 words
The vaginal device for delivering drug according to claim 19 wherein the carrier is a fluid carrier for the drug in the reservoir.
References Cited (Backward Citations)
US3967618A
Cited
US3993073A
Cited
US4012496A
Cited
US4066075A
Cited
US4144317A
Cited
US3995633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |