What is an obstetric pessary – how to select and indications for installation during pregnancy, types and price

The content of the article

All pregnant women want the bearing to take place safely, and then they give birth to a healthy, strong baby. However, not all future mothers succeed. Some are prescribed a pessary during pregnancy, and women get scared, not knowing what this remedy is. The obstetric pessary is a ring-shaped device with which the uterus is fixed during pregnancy. To learn about the consequences of using the pessary, side effects and contraindications when using it, it will be interesting to any expectant mother to whom this device was prescribed.

What is an obstetric pessary

Doctors call a small ring for pregnant women on the cervix of the uterus a pessary. The most common device really looks like a ring, but there are a lot of options for the shape of this instrument – there are obstetric cup-shaped, cubic, cone-shaped, mushroom-shaped devices that perform the same function – reliable fixation of the uterus so that the fetal pressure is distributed evenly across it. An alternative to installing the device is an operation to suture the cervix, which is fraught with negative consequences.

Cervical pessary

In what cases do they establish

Terrible diagnosis – “the threat of premature miscarriage” – today every fifth pregnant woman hears an obstetric examination. However, not everyone is equipped with a special ring that will protect the future mother from spontaneous early birth and miscarriage. The installation of an obstetric pessary is prescribed for isthmic-cervical insufficiency. This pathology is characterized by the following symptoms:

  • too soft and weak walls of the uterus;
  • the constant opening of the uterine pharynx due to damage;
  • short cervix.

This condition occurs after gynecological diseases, abortions, constant curettage, severe previous childbirth, may be a consequence of diseases of the internal organs, or have a congenital form. Insufficient functioning of the uterus can lead to the fact that the membranes begin to penetrate the pharynx during fetal growth, which is fraught with infection, early rupture, and miscarriage. The use of the pessary in 85% of cases of obstetric practice helps to safely bear the fetus.

Types of Obstetric Pessaries

Each woman is individual, has her own dimensions of the vagina and cervix. Depending on these indicators, the following options for obstetric pessaries are distinguished:

  • 1 view. Used during the first pregnancy, when the neck diameter is not more than 30 mm, and the length of the upper third part of the vagina is 60-65 mm.
  • 2 view. The use of such obstetric rings is justified in the second or third pregnancy, when the upper third part of the vagina is 65-75 mm, and the neck diameter is 30 mm.
  • 3 view. Such rings are relevant for women carrying more than one child, whose upper third of the vagina is more than 76 mm, and the diameter of the neck exceeds 37 mm.

How long is the pessary put

Diagnosis of the functioning of the uterus, its possible weakness and lack of work – all this is done by obstetricians at the end of the first trimester. However, sometimes during these periods it is not possible to establish the presence of pathology, and the final diagnosis confirming isthmic-cervical insufficiency is made in the second trimester. The pessary is established between 1 and 2 trimester, at 13-23 weeks of gestation. The expectant mother should be prepared to wear this obstetric device for a long time, almost the entire period of carrying the baby.

Fetus in the womb

How to pick up

The correct selection of the obstetric pessary is very important, because this tool helps to save the life of the fetus, relieves pressure on the uterus, so you can’t try to choose the right device for yourself. The need for installation should be recommended by a qualified gynecologist or obstetrician, on the basis of ultrasound examination and visual examination of the uterus, during which its diameter and dimensions of the vagina are established.

The material for the manufacture of this obstetric instrument is silicone or special soft plastic. The gynecologist helps to choose the desired product for a pregnant woman, indicating the specific manufacturer, type and type. It is noted that when using imported pessaries, fewer side effects occur, and these devices are better tolerated by the body.

How to put a pessary

Before you put the ring, you have to take smears on the microflora of the vagina. In addition, the necessary indications for the installation of this obstetric device is the normal tone of the uterus and the absence of protrusion of the membranes into the pharynx, the diameter of the cervix is ​​at least 30 mm, and the upper third part of the vagina is at least 60 mm. Obstetricians claim that the procedure for installing the ring is atraumatic and painless, however, if you have a low pain threshold, you can ask to apply local anesthesia. A pre-selected design is installed as follows:

  • Woman lays on her back, legs spread wide.
  • The obstetric pessary gynecologist liberally lubricates with a special cream or gel and begins to inject into the vagina with a wide base.
  • After insertion, the ring is deployed so that the base is deep in the vagina, and the narrow part is under the pubic bones of the pelvis. Installation takes 15-20 minutes, after which you can get up and go home.

What you need and what you can not do after installing the pessary

Do not think that all the problems have ended after the installation of the obstetric ring, and you can relax without visiting the doctors. In order for the embryo to develop normally, when installing a pessary, certain medical requirements should be observed:

  • Vaginal intercourse should be stopped.
  • Avoid heavy physical exertion, try not to bend over or squat..
  • Observed by a gynecologist at least 2 times a month so that the doctor, upon examination, makes sure that the device is in place, has not moved anywhere.
  • You will have to regularly take a smear on the health of microflora, since wearing an obstetric ring can provoke the occurrence of vaginal infections that are treated on an outpatient basis.
  • In no case do not try to extract the pessary yourself.

Woman at the reception at the gynecologist

Possible complications while wearing

Since the device is a foreign body embedded in the body for a long period, the following complications are possible when wearing an obstetric pessary:

  • Constant vaginal discharge. If this is not the flow of fetal water (to rule out this option, buy the appropriate test at the pharmacy), and the discharge is transparent, odorless, then you can calm down – everything is going fine.
  • The occurrence of candidiasis and other fungal diseases.
  • Inflammation of the walls of the vagina and cervix, colpitis, vaginitis.

Allocations after installation of the pessary

Immediately after installing the device, you can find a spotting of brownish color. Normally, they should be scarce and stop 3-4 days after the installation of the pessary. However, if the discharge becomes more abundant, you should consult a doctor. Greenish discharge, as well as itching, burning of the vagina indicate the development of a fungal or bacterial infection. This situation should also cause an unscheduled visit to the gynecologist..

What does it feel like if the pessary has shifted

If the device is installed correctly, then the woman should not feel any discomfort. However, if, when changing position, tilting, changing position, she feels discomfort and inconvenience in the uterus, that is, it is likely that the device does not occupy the desired position. This can be evidenced by the simultaneous abundant discharge of a whitish hue. With such symptoms, you should immediately consult a doctor so that he corrects the position of the instrument and returns it to its place.

When the pessary is removed

With a normal pregnancy, the obstetric device is removed by about 38 weeks before the woman is about to give birth. If cervical edema is diagnosed, then extraction may be accompanied by painful sensations. Early removal of the instrument is carried out in a hospital under the following circumstances:

  • inflammatory diseases of the vagina;
  • early discharge of amniotic fluid;
  • intensification of labor activity before the appointed time;
  • chorioamnionitis.


Unfortunately, there are pregnant women for whom the installation of an obstetric ring is contraindicated. The device cannot be used in the following cases:

  • if an allergy to the material of the device is detected;
  • when the embryo reveals pathologies that require abortion;
  • with a neck diameter of less than 50 mm;
  • if prolapse of the fetal bladder has occurred;
  • with constant bleeding, increased uterine tone, cervical dilatation;
  • with infectious and inflammatory processes in the vagina at the time of installation.

Pregnant talks with a doctor

Price obstetric pessary

All pregnant women are concerned about how much the pessary costs. The cost of the device varies depending on the manufacturer and type of product. You can look in the catalog and buy in the online store, ordering with delivery the desired product, after consulting with your doctor. An approximate breakdown of capital prices, depending on the types of obstetric devices, is indicated in the table below:

product name

The form

Price, rubles


flat ring


Dr. Arabin






Hodge pessary

concave ring


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