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OBSTETRICS AND GYNECOLOGY

INVENTION
Patent of the Russian Federation RU2051707

METHOD OF INTERRUPTION OF PREGNANCY OF EARLY TERMS AND DEVICE FOR ITS IMPLEMENTATION

METHOD OF INTERRUPTION OF PREGNANCY OF EARLY TERMS
AND DEVICE FOR ITS IMPLEMENTATION

The name of the inventor: Vadim Ivanovich Gritsyuk; Shein Vladimir Petrovich; Rediskin Alexander Ivanovich
The name of the patent owner: Gritsyuk Vadim Ivanovich ; Shein Vladimir Petrovich; Rediskin Alexander Ivanovich
Address for correspondence:
The effective date of the patent: 1992.03.06

The invention relates to magnetotherapeutic apparatuses using magnetic fields. Use: in gynecology, for termination of early pregnancy. SUMMARY OF THE INVENTION: The method includes the creation of a directed concentrated effect of an alternating magnetic field of intensity 150-200 Oe on the body of the uterus and the fetal egg and the additional action of the alternating magnetic field on the prescription zone of the external throat of the cervix. The alternation of the macro-poles N and S on the inner surface of the magneto-cup cap, which is specified by the meander in the form of a meander, ensures the movement of the magnetic lines during the patient's walking relative to the cervix and the influence of the alternating magnetic field on the sensitive nerve endings of the receptors surrounding the cervical canal, which, Cervico-pituitary uterine reflex. Magnetophorny cap contains a truncated cone with one bottom. The wall of the cone is made with the same thickness over its entire height, and the inner diameter of the base of the cone is determined to be greater than the outer diameter of the cervix by 1.5-2 mm. In this case, the bottom of the cap cone can be provided with drainage openings.

DESCRIPTION OF THE INVENTION

The invention relates to magnetotherapeutic apparatuses using magnetic fields, namely to methods and devices for interrupting early pregnancy, and can be used in outpatient gynecological practice.

There is a known method for interrupting early pregnancy, including the creation of a directed concentrated action of an alternating magnetic field of intensity 150-200 Oe on the body area of ​​the uterus and a fetal egg with the help of a magnetized magnetophoric cap located on the cervix of the uterus [1]

Known and, as a prototype, a method for interrupting early pregnancy, which includes exposure to a fetal egg with an inhomogeneous permanent magnetic field of intensity 150-200 Oe using a constant magnetic field source fixed to the cervix of the uterus [2]

The disadvantage of the prototype method is the inability to ensure the effect of the magnetic field on the part of the cervix, which is most provided with receptors and located in the immediate vicinity of the bottom and side surface of the magnetophoric cap, which reduces the effectiveness of abortion.

In addition, the proposed method does not provide for the outflow of tissue torn off the contents of the uterus without removing the magneto-cap, which complicates the manipulation of abortion and creates a threat of purulent-septic diseases.

A device for interrupting an early pregnancy is also known, comprising a source of a permanent magnetic field in the form of a magneto-neck cervical cap [1]

However, the efficiency of such a cap is 50%

As a prototype, a device for aborting a pregnancy is selected containing a cap "Kafka" a source of a constant magnetic field located in the vagina on the neck of the uterus, in which the bottom is made of magnetically hard material (magnetophore) [2]

The disadvantage of this device is the presence of a flange in the cap, the magnetic field of which affects the surrounding tissue of the uterus, which leads to a weakening of its effect on the cervix and, therefore, reduces the effectiveness of interruption of early pregnancy.

In addition, the "blind" design of these caps contributes to the active, due to the suction effect, and passive casting of decaying tissues of the fetal egg and the microbial flora of the cervical canal into the sterile uterine cavity. This effect of the "thermostat" contributes to the rapid growth of the microbial flora and promotes the development of septic states.

The technical result of the proposed invention is an increase in the effectiveness of interruption of early pregnancy and a reduction in the likelihood of complications during the procedure due to an increase in the area of ​​magnetic field impact on the receptor-provided region of the cervix located in the immediate vicinity of the bottom and side surface of the magnetophoric cap caused by the cervico-pituitary Effect, but also due to the provision of outflow from the uterus of rejecting tissues of the fetal egg during the procedure.

The achieved technical result is achieved by the fact that in the method of interrupting early pregnancy, involving an inhomogeneous magnetic field of intensity of 11.9-15.9 kA / m per fetal egg, according to the invention, in addition affect the cervix with an alternating magnetic field, the heterogeneity of which is created by an alternating Location of the macro-poles.

The magnitude of the magnetic induction of each macro-pole is 20 mlT.

The technical result is achieved by the fact that in the device for termination of early pregnancy, made in the form of a cap, part of which is made of a magnetophore, according to the invention, the cap is completely made of a magneto-rubber based on synthetic rubber, has the form of a truncated cone with the same wall thickness and bottom , While on the inner surface of the cap regions of magnetization are formed in the form of alternating macro-poles. In addition, the bottom of the cap is made with drainage holes, the macro-poles are arranged in steps of 2 mm. The magnetophore is made in the form of a homogeneous composition of synthetic rubber and barium ferrite.

The additional effect of the alternating magnetic field with the specified value of magnetic induction of 20 ml of T on the most part of the cervix that is provided by the receptors allows the outer throat region to cover the entire cervical receptor zone and cause a significant cervical-pituitary reflex that changes the level of hormonal regulation, which increases the efficiency of abortion.

The execution of the cap from the magnetophore in the form of a truncated cone with the same thickness along its entire height makes it possible to exclude the influence of the magnetic field from the side of the cap on the surrounding tissues and, thereby, to strengthen its effect on the cervical receptors.

The presence of magnetization regions on the inner surface of the cap in the form of alternating macro-poles with a step equal to 2 mm ensures alternation of the required number of alternating macro-poles (N, S) in it, affecting the receptors of the cervix, which increases the efficiency of abortion.

Execution of drainage holes in the bottom of the cap further increases the outflow of disintegrating tissues from the uterine cavity, while ensuring the required strength of the bottom of the cap by performing it from a homogeneous composition of synthetic rubber and barium ferrite.

It is the additional effect of the alternating magnetic field on the most part of the cervix of the uterus, provided by the receptors, in this embodiment of the source of the magnetic field of the magnetophoric cap, which strengthens the cervical-hypophyseal reflex of the cervical receptors, which leads to the termination of pregnancy, and, therefore, to the achievement of the purpose of the invention.

This allows us to conclude that the proposed inventions are linked together by a single inventive concept.

Comparison of the proposed technical solutions with the prototype made it possible to establish compliance with the criterion of "novelty". A study of other known technical solutions in the art has shown that the inventions are derived from them in an unobvious manner and, therefore, meet the "inventive level" criterion.

In Fig. 1 shows the distribution of magnetic lines of force (N, S) in the zone of action of the magnetophoric cap on the body of the uterus with a radius of 5-7 cm (area of ​​the fetal egg); In Fig. 2 the same, and the distribution of magnetic lines of force on the inner surface of the magnetophoric cap acting on the prescription region of the cervix; In Fig. 3 receptor region of the end of the cervix, covered by the action of the magnetic field of the inner surface of the bottom of the cap.

In Fig. 4 distribution of magnetic lines of force in the area of ​​the fetal egg and the receptor zone of the uterine chota when the magnetophoric cap is located on the cervix; In Fig. 5 is a general view of the magneto-neck cervical cap (in section); In Fig. 6 the same, top view; In Fig. 7 the same, with drainage holes made in its bottom (in a section); In Fig. 8 the same, top view.

THE METHOD IS PROVIDED AS FOLLOWS:

After the examination, the patient is determined the gestational age, and if it does not exceed 2-3 weeks, determined by the level of chronic gonadotrapine, the cervical magnetophore cap 1 is put on the cervix.

In Fig. 1, 2, 4, the arrangement of the magnetic field macros N, S of the magnetophoric cap surrounding the body of the uterus 3 and the fetal egg 4 in the region at a distance L of 5-7 cm from the bottom 2 of the cap (see Figures 1, 4) and The arrangement of the macro-poles N, S on the inner surface of the cap covering the adjacent receptor zone 5 of the external throat (Figures 2, 4) of the cervix. The magnetic field propagated from the bottom of the cap with an intensity of 11.9-15.9 kA / m covers the area of ​​the uterus body 3 and the fetal egg 4 and is 0.3-0.7 kA / m at a distance of L 7 cm. The magnetic field extends from The inner lateral surface 1 and the bottom 2 of the magneto-cap, covers the receptor zone 5 of the uterus. The configuration of this magnetic field, i.e. The distribution of the macro-poles N, S on the inner surface of the magnetophoric cap and in the gap 6 between the wall of the cervix 3 and the cap is formed by the magnetic field of the inducer made in the form of a miander and the magnitude of its magnetic induction is 20 ml Tl every 2 mm of the cap surface corresponding to the step " A "(see Figure 2).

This alternation of the N, S macropoles on the inner surface of the magnetophoric cap causes the poles to move relative to the cervix during walking and the action of the alternating magnetic field on the sensitive nerve endings of the 8 receptors 7 surrounding the cervical canal 9 that are excited by this field and cause the cervico-pituitary uterine reflex .

Magnetophorny cap removed when there is menstrualnopodobnoe bleeding. Separated from the cap is subjected to an intologic control for the diagnosis of pregnancy.

The proposed apparatus for carrying out this method is shown in FIG. 5-8.

The device is made in the form of a cap comprising a wall 1 and a bottom 2 forming a truncated cone. The wall of the truncated cone is made with the same thickness d over its entire height, and the base is made open, and its inner diameter D 1 is selected more than the outer diameter D 2 of the cervix by 1.5-2 mm.

The bottom 2 of the truncated cone of the cap can be provided with drainage openings 10 (3 mm in diameter), for example three arranged at equal distances along the circumference (see Figures 7, 8) or one hole, in the center (not indicated). Performing a larger number of holes than three is impractical, since it leads to a decrease in the strength of the bottom of the cap. The cap is made of a composite material containing synthetic rubber and barium ferrite powder, forming a homogeneous composition that provides the required strength of the cap.

The device is used as follows:

The cap is placed on the cervix 3. Due to the gap 6 between the walls 1 of the cap and the cervix 3, the alternating magnetic field on the inner surface of the cap with a magnitude of 20 mlT per every 2 mm of the surface creates a variable effect of this field on the nerve endings of the 8 receptors 7 of the receptor zone 5 Cervix 3. The movement of the magnetic force lines causes additional irritation of the nerve fibers and sensitive endings of the 8 receptors in this gap 6 in the walking of the patient. At the same time, by making the wall 1 of the truncated cone 1 of the cap with the same thickness d throughout its height, the magnetic field From the side of the cap to the surrounding tissue of the uterus 3, which increases the effect on the receptor zone 5 of the cervix 3.

The outflow of decaying tissues of the fetal egg 4 from the uterus 3 is also ensured by a gap 6 between the cap wall 1 and the uterine wall 3 covered by it. Additionally, the outflow from the uterus can be increased by means of drainage holes 10 of the bottom 2 of the cap.

Example 1 . The patient was placed on the cervix with a magnetophoric cap on the fifteenth day of pregnancy, determined as a result of ultrasound examination by the installation of the Japanese firm Alok. The magnetophoric cap creates an alternating field with a strength of 12.7 kA / m. The interruption of pregnancy occurred on the fifth day, which is determined by the presence of the fetal egg and menstrual-like secretions in the cap. The cap is made of a material containing polydimethylsiloxane rubber with vinyl groups of 10 wt. Barium ferrite 90 wt.

Example 2 . The patient is placed on the cervix on the twentieth day of pregnancy, a magnetophoric cap that creates an alternating magnetic field with the following parameters: tension 14.3 kA / m. Interruption of pregnancy occurred on the third day. The cap is made of a composite material containing a polydimethylsiloxane rubber with hydroxyl groups of 10 wt. Barium ferrite 90 wt.

Thus, the proposed invention allows, due to the additional alternating action of the alternating magnetic field on the receptor zone of the cervix, with the above-mentioned performance of the magnetophoric cap, on the one hand, to effect on the cervical receptor zone and, consequently, to increase the efficiency of interruption of early pregnancy to 70% and More and the regulation of the menstrual cycle compared with the prototype (clinical trial data of the Institute of Obstetrics and Gynecology of the Academy of Medical Sciences of the USSR named after DO Ott from 17.06.91 N 550, the 1st Department of Obstetrics and Gynecology, GIDUV, St. Petersburg, 06.10.91 ), And, on the other hand, increase the outflow of decaying tissues of the fetal egg and uterus, which reduces the likelihood of infectious diseases in comparison with the prototype.

CLAIM

1. A method for interrupting an early pregnancy, comprising exposing the fetus to a fetal egg with an inhomogeneous magnetic field of 11.9-15.9 kA / m, characterized by additionally affecting the cervix with an alternating magnetic field, the heterogeneity of which is created by the alternating arrangement of the macro-poles.

2. A method according to claim 1, characterized in that the strength of the macro-poles is 20 ml.

3. Device for interrupting early pregnancy, made in the form of a cap, part of which is made of a magnetophore, characterized in that the cap is completely made of a magneto-phrasic based on synthetic rubber, has the form of a truncated cone with the same wall and bottom thickness, while on the inner surface The magnetization regions are formed in the form of alternating macro-poles.

4. The device according to claim 3, characterized in that the bottom of the cap is made with drainage holes.

5. The device according to claim 3 and 4, characterized in that the macro-poles are arranged in steps of 2 mm.

6. Apparatus according to claims 3 and 5, characterized in that the magnetoform is made in the form of a homogeneous composition of synthetic rubber and barium ferrite powder.

print version
Date of publication 27.03.2007gg