WO2012063262A2 - A novel intrauterine device with controlled copper release - Google Patents
A novel intrauterine device with controlled copper release Download PDFInfo
- Publication number
- WO2012063262A2 WO2012063262A2 PCT/IN2011/000770 IN2011000770W WO2012063262A2 WO 2012063262 A2 WO2012063262 A2 WO 2012063262A2 IN 2011000770 W IN2011000770 W IN 2011000770W WO 2012063262 A2 WO2012063262 A2 WO 2012063262A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- copper
- iud
- biodegradable polymer
- release
- biodegradable
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/06—Contraceptive devices; Pessaries; Applicators therefor for use by females
- A61F6/14—Contraceptive devices; Pessaries; Applicators therefor for use by females intra-uterine type
- A61F6/142—Wirelike structures, e.g. loops, rings, spirals
- A61F6/144—Wirelike structures, e.g. loops, rings, spirals with T-configuration
Definitions
- the invention relates generally to the field of contraceptive devices, particularly designed for intrauterine insertion.
- the device of the present invention more specifically concerns with copper containing intrauterine device covered with a thin layer of a biodegradable polymer.
- IUDs or intrauterine devices are a type of contraceptive medical device placed in the uterus. IUDs are safe and effective methods of long-term reversible contraception. Copper IUDs, which were first marketed in the early 1970s, represent an important contraceptive option for nearly 160 million women worldwide [1]. The design and copper content as well as placement of the copper on IUDs could affect their effectiveness and side effects. The presence of this foreign body in the uterus makes the endometrium to release leukocytes and prostaglandins. These substances are hostile to both sperm and eggs. It is reported that the presence of copper increases this spermicidal effect [2, 3].
- the most widely used IUDs are copper-bearing IUDs (Cu-IUD).
- Cu-IUD copper-bearing IUDs
- the enhanced contraceptive effect of Cu-IUD is attributed to the copper ions released by the corrosion of copper in the uterus [4].
- the contraceptive effectiveness of Cu-IUD is related to the surface area of copper on the device. Moreover they do not affect breastfeeding, interfere with intercourse, or have hormonal side effects.
- the minimum amount of copper ions required for contraceptive action is 25-80 micrograms per day [5].
- Cu-IUD The main limitation of Cu-IUD is their tendency to cause excessive pain and heavy menstrual bleeding in the initial days of insertion as a result of the burst release of copper ions into the uterus [6, 7]. This side effects decrease over time period [8]. Nevertheless the usage of Cu- IUDs is very less (except in Chine) owing to the above mentioned reason. In OOIndia, the government supports the Cu-T380A as the suitable IUD. The studies indicate that the copper ion release in 380A is much more compared to the other copper-bearing Ts like 220B and 220C, of course due to less amount of copper.
- an Intra Uterine Ball (IUB) device comprising a hollow sleeve for at least partial insertion into the uterine cavity and an elongate conformable member comprised of shape memory alloy which is adapted to conform into a predetermined three dimensional ball - like configuration within the uterine cavity, with useful for a gynecological procedure or treatment has been disclosed.
- IUB Intra Uterine Ball
- degradable implantable medical device in the form of graft implants, vascular implants, non vascular implants, wound closure implants, sutures, drug delivery implants, biologic delivery implants, urinary tract implants, inter-uterine implants, organ implants, bone implants, dental implants and spinal disks.
- the present invention speaks about coating the copper bearing IUD with a polymer which is biocompatible and regulate the release of Cu 2+ ions in such a way to ensure the concentration required for contraception.
- the present invention relates to intrauterine devices and more specifically concerns with copper containing intrauterine device covered with a thin layer of a biodegradable/bioabsorbable polymer, which degrade over a clinically relevant period of time, to minimize the burst release of copper ions. Due to coating, biodegradable/bioabsorbable polymer thin film according to the present invention can prevent
- the copper ions from being excessively released in the early stage immediately after insertion, which contributes, to bleeding and pain, and after that, can gradually release the copper ions over a delayed period as the biodegradable/bioabsorbable polymer thin layer is degraded.
- the polymer thin layer degrades in the uterus environment within a clinically relevant time period, such as approximately fifteen days to five month.
- the device may have at least a portion which degrades at a controlled degradation rate to approximate dissolution at or within one month.
- the biodegradable/bioabsorbable polymer is one or more compounds selected from the group 1 15 consisting of poiyglycolide (PGA), polylactide (PLA), poly caprolactone (PCL), and their copolymers, derivatives and copolymers of poly(amino acid), polyanhydride and polyorthoesters, , PVA (polyvinyl alcohol)chitosan or their blends or composites.
- the biodegradable/bioabsorbable polymer has a weight-average molecular weight ranging from about 100 g/mol to about 1,000,000 g/mol.
- the thickness of the biodegradable/ bioabsorbable 120 polymer coating is from about 10 ⁇ to about 10mm.
- Degradation of the polymer thin layer may occur in multiple phases, such as a slower degradation rate in one phase and a faster degradation rate in another phase or in the reverse order.
- the biodegradable polymer coated copper-T will release copper ions to the 125 surrounding aqueous medium at a release rate of 10 to 100 micrograms of copper ions per day. Therefore, the coated copper-T of the present invention can be effectively used for controlled copper ion release for contraception.
- FIG. 1 is the graph to illustrate the variation of Cu 2 + release rate for polymer coated Cu-T380 A and uncoated Cu-T 380A in simulated uterine solution (SUS) for a period of 10 months
- the present invention provides a new and improved reversible contraceptive copper bearing intrauterine device, comprising of a biodegradable/bioabsorbable thin film coated copper- T.
- the purpose of using this thin film coated copper-T is to control and minimize the burst release of copper ions after the insertion of the device in the uterine environment.
- biodegradable thin film coated in the IUD reduces the copper ions release rate during the early stage. Another advantageous effect of the present invention, while reducing the burst release of copper ions, it avoids over bleeding and pain which may usually occur in conventional intrauterine devices. As the biodegradable/bioabsorbable polymer thin layer is degraded over time, it renders gradual release of the copper ions. Degradation of the polymer
- thin layer may occur in multiple phases, such as a slower degradation rate in one phase and a faster degradation rate in another phase or in the reverse order.
- the biodegradable/bioabsorbable polymer according to the invention is a non erodible polymer selected from one or more compounds of a group consisting of polyglycolide (PGA), 150 polylactide (PLA), poly caprolactone (PCL), and their copolymers, derivatives and copolymers of poly (amino acid), polyanhydride and polyorthoesters, PVA (polyvinyl alcohol) chitosan or their blends or composites at different proportions/ratios.
- PGA polyglycolide
- PLA polylactide
- PCL poly caprolactone
- the biodegradable/bioabsorbable 155 polymer selected has a weight-average molecular weight ranging from about 100 g/mol to about 1,000,000 g/mol and the organic solvent is selected from the group consisting of tetrahydrofuran, methylene chloride, chloroform, ethyl acetate, hexafluoroisopropanol and acetone and their combinations.
- the biodegradable/bioabsorbable polymer is used in an amount of about 5 wt % to about 75 wt % based on the weight of the organic solvent.
- the thickness of the biodegradable/ bioabsorbable polymer coating varies between 10 ⁇ ⁇ to about 10 mm.
- the biodegradable/bioabsorbable polymer coated copper-T will release copper ions to the surrounding aqueous medium at a release rate variable within a range of 10 to 100 165 micrograms of copper ions per day.
- the biodegradable polymer coated copper-T can avoid the excessive release of copper ions immediately after insertion and will gradually release the copper ions over a delayed period as the biodegradable/bioabsorbable polymer thin layer is degraded.
- the polymer thin layer degrades in the uterus environment within a clinically relevant time period, such as approximately fifteen days to five month.
- the devices at least partially degrade in the uterus environment in less than one week, such as a few days, one day, a few hours, one hour or less.
- the device may have at least a portion which degrades at a controlled degradation rate to approximate dissolution at or within one month.
- the biodegradable/ bioabsorbable polymer coated copper-T will release copper ions to the surrounding aqueous medium at a uniform release rate, which is required for providing contraception.
- the biodegradable/bioabsorbable polymer coated copper-T will be beneficial since there is no side effect arising from bulk release of copper ions.
- the IUD of the present 180 invention is made of polyethylene frame over which the copper releasing units are present.
- the insertion method of biodegradable/ bioabsorbable polymer coated copper-T is the same as such for uncoated Cu-T insertion.
- the IUD member in its three dimensional configuration has a diameter which is significantly higher than the diameter of the cervical canal thereby 185 expulsion of IUD member from the uterine cavity is prevented.
Landscapes
- Health & Medical Sciences (AREA)
- Reproductive Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Medicinal Preparation (AREA)
- Laminated Bodies (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU1300384A HU230345B1 (en) | 2010-11-08 | 2011-11-08 | Intrauterine device with controlled copper release |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN3321/CHE/2010 | 2010-11-08 | ||
IN3321CH2010 | 2010-11-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012063262A2 true WO2012063262A2 (en) | 2012-05-18 |
WO2012063262A3 WO2012063262A3 (en) | 2012-07-05 |
Family
ID=45774294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2011/000770 WO2012063262A2 (en) | 2010-11-08 | 2011-11-08 | A novel intrauterine device with controlled copper release |
Country Status (4)
Country | Link |
---|---|
HU (1) | HU230345B1 (en) |
PL (1) | PL403688A1 (en) |
PT (1) | PT2012063262W (en) |
WO (1) | WO2012063262A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014150703A1 (en) * | 2013-03-15 | 2014-09-25 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the genital-rectal areas of the body |
US20150065472A1 (en) * | 2012-04-23 | 2015-03-05 | Bayer Pharma Aktiengesellschaft | Intrauterine application of 18-methyl-15ss,16ss-methylene-19-nor-20-spirox-4-en-3-one systems, intrauterine systems containing 18-methyl-15ss,16ss-methylene-19-nor-20-spirox-4-en-3-one, as well as the use thereof in contraception and gynaecological therapy |
US9907691B2 (en) | 2013-03-13 | 2018-03-06 | Hologic, Inc. | Intrauterine contraceptive devices |
US10398733B2 (en) | 2013-03-15 | 2019-09-03 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the dermatological areas of the body |
US10813948B2 (en) | 2013-03-15 | 2020-10-27 | Cda Research Group, Inc. | Methods of treatment using topical copper ion formulations |
US11000545B2 (en) | 2013-03-15 | 2021-05-11 | Cda Research Group, Inc. | Copper ion compositions and methods of treatment for conditions caused by coronavirus and influenza |
US11007143B2 (en) | 2013-03-15 | 2021-05-18 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the oral-respiratory-otic areas of the body |
US11193184B2 (en) | 2019-02-22 | 2021-12-07 | Cda Research Group, Inc. | System for use in producing a metal ion suspension and process of using same |
US11318089B2 (en) | 2013-03-15 | 2022-05-03 | Cda Research Group, Inc. | Topical copper ion treatments and methods of making topical copper ion treatments for use in various anatomical areas of the body |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1024660C2 (en) | 2003-10-29 | 2005-05-02 | Marc Spits | Intrauterine contraceptive device for vaginal insertion comprises an active copper-containing carrier with a coating that releases a hemostatic agent |
WO2006108065A2 (en) | 2005-04-05 | 2006-10-12 | Elixir Medical Corporation | Degradable implantable medical devices |
WO2010082197A2 (en) | 2009-01-18 | 2010-07-22 | Ilan Bar-Am | Novel intra uterine device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5224493A (en) * | 1991-01-30 | 1993-07-06 | Cadco Corporation | Contraceptive intracervical device and novel nonsystemic agents for the prevention of conception and disease |
FI97944C (en) * | 1994-07-05 | 1997-03-25 | Leiras Oy | Active substance delivery device |
-
2011
- 2011-11-08 PL PL403688A patent/PL403688A1/en unknown
- 2011-11-08 WO PCT/IN2011/000770 patent/WO2012063262A2/en active Application Filing
- 2011-11-08 HU HU1300384A patent/HU230345B1/en not_active IP Right Cessation
- 2011-11-08 PT PT2011000770A patent/PT2012063262W/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1024660C2 (en) | 2003-10-29 | 2005-05-02 | Marc Spits | Intrauterine contraceptive device for vaginal insertion comprises an active copper-containing carrier with a coating that releases a hemostatic agent |
WO2006108065A2 (en) | 2005-04-05 | 2006-10-12 | Elixir Medical Corporation | Degradable implantable medical devices |
WO2010082197A2 (en) | 2009-01-18 | 2010-07-22 | Ilan Bar-Am | Novel intra uterine device |
Non-Patent Citations (10)
Title |
---|
"Mechanisms of the Contraceptive Action of Hormonal Methods and Intrauterine Devices (IUDs", 2006, FAMILY HEALTH INTERNATIONAL |
"Progress in Reproductive Health Research", 2002, WORLD HEALTH ORGANIZATION, article "The intrauterine device (IUD)-worth singing about", pages: 1 - 8 |
DAVID HUBACHER; PAI-LIEN CHEN; SOLA PARK: "Side effects from the copper IUD: do they decrease over time?", CONTRACEPTION, vol. 79, 2009, pages 356 - 362, XP026079962, DOI: doi:10.1016/j.contraception.2008.11.012 |
JIANJUN ZHU; NAIXIN XU; CHENGDIAN ZHANG: "Characterestics of copper corrosion in simulated uterine fluid in the presence of protein", ADVANCES IN CONTRACEPTION, vol. 15, 1999, pages 179 - 190 |
JOURNAL CONTRACEPTION, vol. 70, 2004, pages 153 - 157 |
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B: APPLIED BIOMATERIALS, vol. 80B, no. 1, 2006, pages 220 - 225 |
KELLER; SARAH: "IUDs Block Fertilization", vol. 16, 1996, NETWORK. FAMILY HEALTH INTERNATIONAL |
KJAER A; LAURSEN K; THORMANN L; BORGGARD O; LEBECH P. E: "Copper released from copper intrauterine devices, removed after up to 8 years of use", CONTRACEPTION, vol. 47, 1993, pages 349 - 358 |
TIMONEN H: "Copper release from copper-T interauterine devices", CONTRACEPTION, vol. 14, no. 1, 1976, pages 25 - 38 |
ZIELSKE H; KOCH U J; BADURA R; LADEBURG H: "Studies on copper release from copper-T device (T-Cu200) and its influence on sperm migration in vitro", CONTRACEPTION, vol. 10, 1974, pages 651 - 656 |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150065472A1 (en) * | 2012-04-23 | 2015-03-05 | Bayer Pharma Aktiengesellschaft | Intrauterine application of 18-methyl-15ss,16ss-methylene-19-nor-20-spirox-4-en-3-one systems, intrauterine systems containing 18-methyl-15ss,16ss-methylene-19-nor-20-spirox-4-en-3-one, as well as the use thereof in contraception and gynaecological therapy |
US9907691B2 (en) | 2013-03-13 | 2018-03-06 | Hologic, Inc. | Intrauterine contraceptive devices |
US11083750B2 (en) | 2013-03-15 | 2021-08-10 | Cda Research Group, Inc. | Methods of treatment using topical copper ion formulations |
US11318089B2 (en) | 2013-03-15 | 2022-05-03 | Cda Research Group, Inc. | Topical copper ion treatments and methods of making topical copper ion treatments for use in various anatomical areas of the body |
US10398733B2 (en) | 2013-03-15 | 2019-09-03 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the dermatological areas of the body |
US10813948B2 (en) | 2013-03-15 | 2020-10-27 | Cda Research Group, Inc. | Methods of treatment using topical copper ion formulations |
US11000545B2 (en) | 2013-03-15 | 2021-05-11 | Cda Research Group, Inc. | Copper ion compositions and methods of treatment for conditions caused by coronavirus and influenza |
US11007143B2 (en) | 2013-03-15 | 2021-05-18 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the oral-respiratory-otic areas of the body |
WO2014150703A1 (en) * | 2013-03-15 | 2014-09-25 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the genital-rectal areas of the body |
US11857514B2 (en) | 2013-03-15 | 2024-01-02 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the dermatological areas of the body |
US11253544B2 (en) | 2013-03-15 | 2022-02-22 | Cda Research Group, Inc. | Methods of treatment using topical copper ion formulations |
US11298316B2 (en) | 2013-03-15 | 2022-04-12 | Cda Research Group, Inc. | Topical copper ion treatments and methods of treatment using topical copper ion treatments in the oral-respiratory-otic areas of the body |
AU2014235693B2 (en) * | 2013-03-15 | 2017-10-05 | Cda Research Group, Inc. | Topical copper ion treatments in the genital-rectal areas of the body |
US11717535B2 (en) | 2013-03-15 | 2023-08-08 | Cda Research Group, Inc. | Copper ion compositions and methods of treatment for conditions caused by coronavirus and influenza |
US11459638B2 (en) | 2019-02-22 | 2022-10-04 | Cda Research Group, Inc. | System for use in producing a metal ion suspension and process of using same |
US11193184B2 (en) | 2019-02-22 | 2021-12-07 | Cda Research Group, Inc. | System for use in producing a metal ion suspension and process of using same |
Also Published As
Publication number | Publication date |
---|---|
PT2012063262W (en) | 2015-06-11 |
PL403688A1 (en) | 2014-02-17 |
HU230345B1 (en) | 2016-02-29 |
HUP1300384A2 (en) | 2013-08-28 |
WO2012063262A3 (en) | 2012-07-05 |
HUP1300384A3 (en) | 2013-10-28 |
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