IUCD-Contraceptive coils of copper what are the new designs??

 

Researchers continue to develop and test new IUDs that may reduce expulsion rates and other side effects.

Among the devices being that has become successful is CU-SAFE 300. It is smaller, lightweight, and flexible T-shaped copper IUD which can be inserted without a plunger and is designed to move towards the uterine fundus (the top of the uterus) when the uterus contracts. Additionally another new device is getting fast popularity i.e. frameless IUD consisting of six copper sleeves on a surgical nylon thread. It is also Flexi Gard 330, or Cu Fix PP 330. The thread is knotted at one end, which is anchored in the muscle of the fundus. In clnical trials the device has proved to be highly effective and comfortable to use. A Copper bearing IUD with a T-Shaped frame, called the Sof-T is becoming popular at some places . In this new device. the tip of each end of the arm consists of a soft ball, designed to prevent perforation and to block the openings to the fallopian tubes in order to prevent sperm from entering.

    The very purpose of these new devices is to reduce pain and irregular bleeding associated with in the existing copper bearing IUDs including the most popular type i.e. T-Cu-380A. Earlier the plastic frame where of different shapes e.g. coil, ‘s’ shaped, circular, triangular or elliptical. Now the only shape recommended is ‘T’ shaped because the cavity of womb is like ‘T’ which fits well with geometric of uterus and adaptation inside the womb is satisfactory if the plastic is of some other type then the frame will hinge the inner wall of womb and cause uterine camps and possibly bleeding.

Additionally the very plastic used is now made up of more flexible material. We are aware of the fact that womb contracts and relaxes spontaneously at varying intervals without the knowledge of a woman. If a ‘rigid’ plastic frame is used then it will not yield or bend to accommodate the shape of the contracted womb. So a rigid plastic frame is bovend to cause cramps and bleeding irregularities. However new copper IUDs discussed below are not approved for use in all countries. Till date the developers and manufactures report fewer expulsions, higher continuation rates, lower failure rates and easy insertion-removal as main advantages of all these new copper IUDs.