A center-of-gravity shifting intrauterine device

Abstract

The invention provides an intrauterine device with the shifting center of gravity. The intrauterine device with the shifting center of gravity comprises an annular hollow shell, an annular cavity is formed inside the annular hollow shell, a fixing ring is arranged on the periphery of the outer side of the annular cavity, a plurality of rectangular grooves are arranged in the inner wall of the fixing ring, the rectangular grooves are uniformly distributed along the circumference of the inner wall of the fixing ring, tungsten balls are arranged in the annular cavity, the tungsten balls can movefreely in the annular cavity, and the radius of the tungsten balls is 2-3 times of the width of the rectangular grooves. Two tungsten balls are arranged in the annular cavity. The annular hollow shellis formed by welding two annular half-round-groove-shaped shells having the same shape and the same size. A positioning groove is arranged in the inner wall of the annular hollow shell, a positioningblock is arranged on the outer wall of the fixing ring, and the positioning groove is matched with the positioning block, so that the fixing ring can not rotate relative to the annular hollow shell.The intrauterine device with the shifting center of gravity has the advantages that a user does not need to bear the pain, pressure and the like caused by the surgery of repeatedly placing and takingout the intrauterine device.

Description

technical field [0001] The invention relates to an intrauterine contraceptive device, in particular to a center-of-gravity shifting intrauterine contraceptive device. Background technique [0002] The intrauterine contraceptive device is a contraceptive device placed in the uterine cavity, which stimulates the inner wall of the uterine cavity with foreign objects, causing aseptic inflammation of the uterus, so that the embryo cannot be implanted normally in the uterus to achieve the purpose of contraception , This contraceptive method has little impact on the human body and has the advantages of being safe, reliable and long-acting. The effective time of the existing intrauterine device after placement can reach up to 10-15 years. After a certain period of time, the contraceptive effect may be lost due to the reduced sensitivity of the inner wall of the cavity. The difference is that after the IUD is placed, people cannot judge when the inner wall of the cavity will lose it...

AI Technical Summary

Problems solved by technology

The effective time of the existing intrauterine device after placement can reach up to 10-15 years. After a certain period of time, the contraceptive effect may be lost due to the reduced sensitivity of the inner wall of the cavity. The difference is that after the IUD is placed, people cannot judge when the inner wall of the cavity will lose its sensitivity to the IUD. Only when an unwanted pregnancy occurs will the IUD be known to be invalid. Therefore, the current IUD products on the market all require The user needs to replace it within 5-10 years, and the user needs to accept the operation of placing and removing the IUD many times in his life, and bear the physical pain and psychological pressure caused by the operation

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