B.Copper releasing intra-uterine contraceptive devices:
By 1970's bioactive devices or first generation devices were developed. With plastic frames which were carriers of either metals, hormones or anti bleeding agents.
Jaime Zipper and Howard Tatum, in 1969 deviced first Cu T & Cu 7 with 200 sq mm of copper.
To improve the life span and effectiveness, second generation Cu releasing IUDs were invented in 1974.
The higher doses of copper with silver or copper sleeves, reduce the chance of fragmentation of copper.
Cu Safe 300:
Cu safe 300 is a T-shaped copper containing IUD with flexible, uniquely shaped arms, transverse arms curve inward to reduce uterine tissue irritation.
Flexible design facilitate easier and less painful insertion and removal, but the curved, "fundal-seeking" arms also resist expulsion.
Life span of CuSafe 300 is 5 yrs.
Fincoid-350:
Fincoid-350 is devised in Finland, it is designed to resist accidental expulsion.
It is having two parts:
curved horizontal arms, and a copper coated vertical stem.
The horizontal arms lock into a groove on the vertical stem.
The resultant movable joint easily constricts and expands with uterine contractions, adjusting to variations in uterine size and shape.
Sof-T:
The Sof-T, which is manufactured in Switzerland, has soft, flexible knobs, occlusion bodies, on each end of its flexible transverse arms. These knobs theoretically block the entrances into the fallopian tubes. Failure rate is 0 to 1.3/ 100 women years.
By 1970's bioactive devices or first generation devices were developed. With plastic frames which were carriers of either metals, hormones or anti bleeding agents.
Jaime Zipper and Howard Tatum, in 1969 deviced first Cu T & Cu 7 with 200 sq mm of copper.
To improve the life span and effectiveness, second generation Cu releasing IUDs were invented in 1974.
The higher doses of copper with silver or copper sleeves, reduce the chance of fragmentation of copper.
Cu Safe 300:
Cu safe 300 is a T-shaped copper containing IUD with flexible, uniquely shaped arms, transverse arms curve inward to reduce uterine tissue irritation.
Flexible design facilitate easier and less painful insertion and removal, but the curved, "fundal-seeking" arms also resist expulsion.
Life span of CuSafe 300 is 5 yrs.
Fincoid-350:
Fincoid-350 is devised in Finland, it is designed to resist accidental expulsion.
It is having two parts:
curved horizontal arms, and a copper coated vertical stem.
The horizontal arms lock into a groove on the vertical stem.
The resultant movable joint easily constricts and expands with uterine contractions, adjusting to variations in uterine size and shape.
Sof-T:
The Sof-T, which is manufactured in Switzerland, has soft, flexible knobs, occlusion bodies, on each end of its flexible transverse arms. These knobs theoretically block the entrances into the fallopian tubes. Failure rate is 0 to 1.3/ 100 women years.
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