| 摘要 |
The present invention discloses a method of contraception employing an intrauterine device comprising retaining means for retaining a contraception element within a uterine cavity. The retaining means includes anchoring means for penetrating into and positively engaging the uterine muscle, so that the device is securely retained in the cavity. The device also preferably includes associated driving means for driving the anchoring means into the uterine muscle. A new device for contraception is also disclosed.
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