Tips and advice for Essure removal
Device structure and use of imaging
Essure is a 4-cm long device (0.8 mm in diameter) with two parts: an inner coil made of stainless steel and PET fibers, the latter of which induces the fibrosis responsible for tubal occlusion, and an outer coil made of nitinol, a nickel titanium alloy.
Dr. Cohen: While the exact mechanism is unclear, it’s possible that the PET fibers may be drivers of the systemic inflammatory-type symptoms that some women report. Nickel allergies are also possible albeit uncommon. They appear to manifest as rash, urticaria, and other symptoms characteristic of contact allergic reactions.
The brittle nature of the outer coil makes a grasp-and-pull approach disadvantageous, unless you’re removing coils early on hysteroscopically. In general, one must avoid fracturing the outer coil, or parts of the device will be left behind. Pulling too hard may also cause the outer coil to unravel and expand to be quite long, which further increases the risk of fracture.
Hysterosalpingogram (HSG) and ultrasound are typically first-line options for looking at coil position. A diagnostic hysteroscopy may also help identify coils, and intraoperative fluoroscopy may be useful for either the hysteroscopic or laparoscopic approach, if there’s any question about portions of the device not being recovered.
Dr. Levie: Ultrasound is often sufficient for operative planning, but, if it does not detect devices in the cornual region, then further imaging may be warranted.
It’s important to be aware that some devices that appear to have correct placement on ultrasound or HSG may actually be partially tracking subserosally. In these cases, the distal portion of the device may have tracked through the mucosal layer and along the muscularis but below the serosa in the fallopian tube, causing pain. Imaging won’t be helpful in making this diagnosis. It will be identified laparoscopically.
Dr. Yunker: When patients have completed the 3-month HSG (to confirm occlusion of the Fallopian tubes post placement), I will review the images myself rather than relying on the report. Without an HSG – and, in many cases, even when I have it in hand – I will order a plain film x-ray of the abdomen and pelvis to look for coils. In almost all cases, I also order an ultrasound, which is helpful in assessing for ovarian and uterine conditions.
I’ve found plain film imaging to be valuable for identifying additional or misplaced Essure inserts. I have found up to four in one tube. In interpreting x-rays, one must appreciate that the outer coil is not radio-opaque (other than the tiny marker at the end) and will not show up. Occasionally we’ll add hysteroscopy to see how much of a coil is trailing into the uterus, but the ultrasound and x-ray are usually enough.
Some patients ask about postremoval imaging. I do not routinely do this, but I’m not opposed to it.
Surgical techniques
Dr. Cohen: I advise dissecting around each coil without cutting the outer portion and removing the coil intact, resecting all the way down to the interstitial portion of the tube, then proceeding with bilateral salpingectomy to ensure contraception.
If the patient’s symptoms are systemic and possibly reflective of PET fiber reactions, a wedge resection of the cornua may provide more peace of mind that PET fibers will not be left in situ. This procedure can be approached similarly to myomectomy, with the use of hemostatic agents such as misoprostol or vasopressin and suture closure in multiple layers.
If there are multiple coils present in the cavity, one option, to avoid having to pull them all out from the abdominal side, is to transect and remove the intracavity portion of the device hysteroscopically then dissect and remove the tubal/interstitial potion laparoscopically. As a general rule, I send all the removed tissue to pathology.
Dr. Levie: In general, I do a linear salpingostomy after using a uterine manipulator and a grasper to first identify the site of the distal portion of the device. One can usually feel where the tubes bend onto the device.
A bit proximal to where I visually and mentally mark the distal end of the device, I make a 2-3 cm incision over the device. With a fine-tip grasper, I can usually release the distal portion of the inner coil. Using two graspers over the inner and outer coils together and a hand-over-hand motion, I pull without excess traction in the access of the tubes, and the proximal portion will usually follow and deliver fairly simply. If the proximal portion breaks, I advise looking for it hysteroscopically and delivering it through the uterus.
Some surgeons have recommended hysteroscopy at the beginning of the procedure with cutting (using scissors) at the proximal end of the outer coil to avoid its getting caught in the cornua.
Most patients continue to want permanent sterilization, so we proceed with salpingectomy. Sometimes, given underlying pathologies, we’ll decide on laparoscopic or vaginal hysterectomy as well or bilateral salpingectomy without doing the salpingostomy. When hysterectomy is part of the surgery, we don’t need to worry at all about broken devices.
When the device is removed separately from the fallopian tube, one should inspect it afterward to ensure that all four markers of the device – the markers that are recommended by the manufacturer for radiologic confirmation of proper placement – have been delivered.
Dr. Yunker: When everything looks normal on the ultrasound – and when the coils on either HSG and/or plain film x-ray appear to be in the appropriate position in the tubes – then removal of the coils and tubes only is an option.
The closer the coil is to the fimbriae, the easier it is to come straight across the tube as you would in a regular salpingectomy without concern of breaking or cutting the coil. However, the closer the coil is the uterine side, the deeper you’ll need to dissect into the cornual region of the uterus. A cornual wedge resection may be necessary in order to remove the coil intact.
Our procedure has evolved over the years and we have moved away from salpingectomy as a means to dissect out the coils. With the theoretical risk of retained coil fragments and PET fibers, we prefer to remove the coils and tubes en bloc.
