FI89327C - INTRAUTERIN KONTRACEPTIONSANORDNING - Google Patents

Description

1 '39327

Intrauterine contraception

The invention relates to contraceptives and in particular to intrauterine contraceptives.

The invention can be used in gynecology for the prevention of unwanted pregnancies in women with uterine cavities of different sizes and shapes as well as as a contraceptive tool in family planning.

The known intrauterine contraceptive device (GB-B 1 456 746) is made as a T-shaped element comprising an arm from which two resilient branches radiate radially and at the end of which a resilient loop is fitted. Each equally curved fork has exactly the same radius of curvature and the angle between the shaft and each fork is less than 90 °.

The known device is characterized in that insufficiently tight contact of the branch with the lining of the uterus is the cause of reduced contraceptive power and insufficient elasticity and size of the loop cause damage, irritating the membrane of the inner uterus, as a result of which the device automatically expels from the uterus.

Also known is the intrauterine contraceptive device Nova TCu 200 Ag (Oy Huhtamäki, Leiras, Finland), which comprises a stem with a copper thread, a rounded small end attached to the arm and forming a T-shaped element therewith, and a fastening device for holding the uterine cavity the body is made of an elastic loop fitted at the end of the shaft.

It is known to the known device that the placement of the resilient loop at the end of the arm, its size and shape do not ensure a continuous small press against the base of the uterus, which causes a reduced contraceptive effect. At the same time, the base of the lumbar loop irritates the receptors in the mucosal region of the inner cervix, causes additional contractions of the uterine muscles and thus allows the device to leave the uterus.

In addition, the devices described above must be of different sizes for different sizes and shapes for the uterine cavity.

It is an object of the invention to provide an intrauterine contraceptive device of one size which can be used in uterine cavities of different sizes, shapes and positions by improving the quality of the uterine cavity.

The task is solved in that in an intrauterine contraceptive device comprising a small, rounded ends with a small arm forming a T-shaped element, the fastening means for holding the device in the uterine cavity, the fastening member made in the shape of a resilient loop, and the thread fitted with the arm according to the invention, the loop has an arcuate base and is connected to it by two resilient branches attached to a small arm at the base, and the loop is flush with the arm and the small and surrounds the arm.

It is also preferred that in the intrauterine contraceptive device, the arcuate base of the resilient loop is made with a thickening to form a support above the cervix.

Such a contraceptive device, due to the flexibility factor of the fastening member consisting of a thickened arcuate base and resilient forks, allows a small continuous press against the sole of any size, shape and position of the uterus, thus achieving a high contraceptive effect.

3 H9327

At the same time, the structure of the fastening member, in particular the arcuate thickened base of the resilient loop, prevents the device from penetrating the inner cervical region and the device settles above this region without damaging the receptors and consequently preventing the device from leaving the uterus.

In the following, the invention will be illustrated by specific embodiments thereof with reference to the accompanying drawing, in which: Figure 1 shows a general view of a contraceptive device according to the invention; Figure 2 shows the same device according to the invention in the uterine cavity, which is a "ideal variant" of normal shape and size; Figure 3 shows the same device according to the invention in a uterine cavity enlarged in transverse dimension; and Figure 4 shows a contraceptive device according to the invention in a uterine cavity which is elongated and irregularly shaped in its longitudinal dimension.

The intrauterine contraceptive device comprises (Fig. 1, 2) a small 1 with rounded ends, an arm 2 connected to the small 1 and forming with it a T-shaped element, a fastening member 3 for holding the means in the uterine cavity 4, which fastening member is made as a resilient loop, and a thread 5 fitted to the arm. The resilient loop of the fastening member 3 has an arcuate base made of thickening and connected to it by two resilient branches 7 '' which are fastened to a small 1 at the base of the arm 2. The resilient loop of the fastening member 3 is arranged flush with the arm 2 and the small 1 and surrounds the arm 2.

The intrauterine contraceptive device is inserted into the uterine cavity 4 (Figure 2) through the cervical canal with a special inserter 1a (not shown in the drawing) and rests against the endometrial base 9 4 -9327. In this case, the thickened arcuate base of the fastening member 3 rests on the uterine wall 10 at a sufficient distance from the cervical region 11. In the case where the intrauterine contraceptive device is inserted into the uterine cavity 4, the transverse dimension of which is increased, i. the size is shortened (Fig. 3), the fastening member 3 is shortened due to the elasticity factor, keeping the small 1 in close contact against the mucosal base 9 of the uterus.

In the case where the device is inserted into the uterine cavity 4, which has an elongated longitudinal dimension and is irregular in shape (Fig. 4), the fastening member 3 elongates due to the elasticity factor and forms this irregular uterine shape and further presses the small uterus 1 evenly against the uterine membrane base 9.

Based on the above, the present intrauterine contraceptive device has a universal and uniform contraceptive effect, one size can be used in different shapes, sizes, and other uteri.

The increase in contraceptive power is achieved in the present device due to the flexibility of the fastening member 3. As a result, the small 1 of the device is in constant close contact with the mucosal membrane base 9 of the uterus and produces a mechanical effect on it.

The thickened arcuate base of the compressible resilient fastening member 3 allows the intrauterine contraceptive device to be securely attached to the uterine cavity 4 above the cervix 11 and prevents it from leaving the uterus.

Claims (2)

5 S 9 3 2 7 1. Intrauterin contraceptionsanordning omfattande en list (1), vars ändar är avrundade, en med listen (1) förbundna Stäng (2) som tillsammans med listen bildar et T-format element and läsorgan (3) fvar kvarhällande av anordningen i livmoderhälan ( 4), a flashing organ which forms an elastic sling, and a spiral (5), anbringing the head (2), a tongue-and-groove element (3), an elastic sliding and a flat part (6) and a resin for a resilient binding part ( 7), vilka är fästa vid listen (1) vid stän-gens (2) basdel och öglan är anordnad i samma soon som stängen (2) och listen (1) ocm omger stängen (2). An intrauterine contraceptive device comprising a small (1) rounded end, an arm (2) connected to the small (1) and forming with it a T-shaped element, a fastening member (3) for holding the device in the uterine cavity (4), which the member is made as a resilient loop, and the thread (5) fitted to the arm (2), characterized in that the resilient loop of the fastening member (3) has an arcuate base (6) and is connected to it by two resilient branches (7) fastened to the small (1) at the base of the arm (2) and the loop is aligned with the arm (2) and the small (1) and surrounds the arm (2). Contraceptive device according to claim 1, characterized in that the arcuate base (6) of the resilient loop is made thicker to form a support above the cervix (11). 2. A contraceptive arrangement according to claim 1, which comprises an elastic sling of the base part (6) and forms a part of the image according to the invention (11).