Mirena IUD has Risk of Device Migration; May No Longer Prevent Pregnancy


Mirena IUD has Risk of Device Migration; May No Longer Prevent PregnancyOverview: Women who use Bayer’s Mirena intrauterine device (IUD) should be aware that the device may no longer prevent pregnancy if it has migrated, or moved from its original location. This complication, known as device migration, has led to lawsuits alleging that Mirena caused injuries.

  • Mirena IUD may migrate from its intended position and become embedded elsewhere; when this happens, it may no longer prevent pregnancy
  • Mirena users should check regularly to make sure that the strings are in place; if the strings cannot be found, a back-up form of birth control should be used
  • Parker Waichman has filed a lawsuit on behalf of a woman who required surgery to remove Mirena

Product: Mirena intrauterine device (IUD)

Manufacturer: Bayer, Inc.

Side Effects & Complications

  • Miscarriage
  • Infertility
  • Intrauterine pregnancy
  • Streptococcal sepsis
  • Pelvic inflammatory disease
  • Perforation of cervix or uterine wall


Device Migration

Mirena users are advised to check that the strings are in place every month. If they cannot be located, patients should contact their doctors and use another form of birth control until otherwise specified. When the strings can’t be found, it could mean that the device has migrated, possibly becoming embedded elsewhere. It may also mean that Mirena is no longer an effective form of birth control. Not only does this present the risk of an unwanted pregnancy, but pregnancies that occur while Mirena is still implanted are more likely to be ectopic. An ectopic pregnancy is when the fetus grows off of the fallopian tube or other organ outside the uterus. It is a life-threatening condition that requires immediate treatment.

Mirena Lawsuits

In July, the national law firm of Parker Waichman LLP filed a lawsuit on behalf of a 24-year old Indiana woman who alleges that the device migrated. According to a press release by the firm, the device could not be found during a hysteroscopy when trying to remove it. A CT scan showed that Mirena had migrated to the left abdominal wall, and she was forced to undergo operative laparoscopy to remove Mirena.