The sort of the intrauterine device is very much, no less than 30 ～ that uses domestic and internationally at present more than kinds 40. Inert birth control introduces only below implement, active birth control implement reach at present domestic and international commonly used birth control implement.
(１ ) inert intrauterine device: Make with inert material, like stainless steel, plastic nylon kind wait with silicon balata. Its manage changes function stability, itself does not release any active material, if the metal is odd annulus of form of flower of annulus of annulus, fried dough twist, mixture annulus, birth control, palace, too Tian Huan, snakelike birth control implement wait. As a result of inert birth control implement contraceptive effect is poorer, domestic and international already gradually hasten falls into disuse, and with active birth control implement those who replace.
(2) active intrauterine device; It is to point to use birth control implement for carrier, contain the metal such as copper or zinc, progestational hormone, hemostatic medicaments and magnetic material, after buy enters palace antrum, body internal energy is slow release active material, increase contraceptive result thereby, drop the intrauterine device of the new generation of side-effect.
(3) at present domestic and international commonly used birth control implement for:
The T that carry copper birth control implement; T plastic bracket, press the area that carry copper (square millimeter) different, have T. Eleven thousand two hundred, T. Eleven thousand two hundred and twenty, TC ｌ ｌ 380 wait for a variety of types. Applying domestic and internationally with OO of TCU 2 wider. Strip steel birth control implement the advantage is get used to palace antrum configuration, fall off not easily, put take easier; Defect is an uterus haemorrhage occurence rate is tallish, t transverse arm is likely wall of penetrate into uterus. For this home two upright make it circle bead, its are businesslike cirque of prep above stainless steel, place fixed number of year to be 5 years or so.
V of silicon balata strip steel birth control implement: Make stand by stainless steel silk, coat silicon balata is in charge of, tubal coat has an area the cupreous silk of 200 square millimeter, average branch is 4 paragraphs, circle at birth control respectively implement on transverse arm and oblique arm, implement the appearance is V model, labor transverse arm disconnects at central ministry, central photograph joins (transverse arm can have 0. 5 centimeters of retractility) , can divide by transverse arm for 24, 26, 3 kinds of 28 norms. This kind of birth control implement the advantage is configuration and uterine antrum conform to, and cupreous silk distributings equably a bed area at uterine antrum, can enhance contraceptive result, the effect is better, but a bit or irregular haemorrhage are a bit much, can deposit 5 ～ 8 years.
Much bear contains cupreous birth control implement: Introduce from Holand, our country already had joint-stock production. This kind of birth control implement, with bracket of polyethylene make it, of arm of side of two side arc outside side has 5 denticulation, silk having copper is circled on trailing arm, cupreous area has 250 square millimeter and 375 square millimeter two kinds, it is big, medium, trumpet by size and cent of trailing arm accident. It sets a means handy, follow easily visit and take out, clinical effect is better, anticipate can place 3 ～ 5 years.
Active gold only link 165 and carry copper annulus of the high power that prop up: The appearance of these two kinds of annulus and metallic only link are similar, all develop from this and come. It is material with cruder stainless steel, the force that prop up amounts to 165 gram left and right sides. Inside antrum of helix of stainless steel silk interval inserts reed of silk of 2 paragraphs of copper and 2 paragraphs of diminish inflammation painful silicon balata person for annulus of active gold sheet 165; The person that add cupreous silk spring only is strip steel annulus of the high power that prop up. Cupreous area all is 200 square millimeter, annulus is divided 20, 21, 22 3 kinds. This annulus is put take technology and likeness of golden only link, but the stainless steel silk because of annulus is thicker, not changeful form falls off, again cupreous silk reed is active material, contain diminish inflammation painful can reduce its side effect, reason is clinical the effect is better, anticipate can place amount to 10 years of above.
Active ｙ birth control implement: The new-style birth control that is newest development success implement, it is basic material with stainless steel, contain copper and diminish inflammation painful. Its structure cent is 3, lining is bracket of stainless steel silk, show ｙ model; Silk having copper is circled on bracket, exterior accumulating is 300 square millimeter, for middle-level; The outerest set have spring of helix of stainless steel silk. At unexpected pipe two end reach the end on trailing arm occlusive belt is antiphlogistic balata bead reachs painful silicon piece. This kind of birth control implement have 24, 26, 3 kinds of 28 model, clinical effect is good, haemorrhage side effect is little, anticipate can place for a long time amount to 10 years of above.
Other: Still have a variety of new birth control domestic and internationally now implement in studying, birth control of the copper that be like medicine implement, magnetic birth control implement, the birth control that takes progestational hormone implement wait. The ｒ of ａ of ｇ of ｉ of ｘ of F ｌ ｅ that studies since 90 time ｄ birth control implement have an outlook relatively, its characteristic is without bracket, 6 copper are covered string go up in nylon silk, insert nylon line knot with tailor-made needle layer of uterine bottom flesh is fixed, make copper covers suspension to be inside palace antrum, clinical effect is good, haemorrhage side effect is little.
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