FR2538243A1 - Intra-uterine contraceptive device - Google Patents

Abstract

1. Heart-shaped intrauterine contraceptive device for treatment, open upwards, consisting of a lower vertical support 1 from the upper end of which two semicircular segments 2a and 2b, concave inward, emerge. the upper ends are spaced apart, characterized in that said segments 2a and 2b have at their lower part two successive curvatures, symmetrical with respect to the vertical axis of said support 1, the first C1 being turned outwards and the second C2 towards the inside. 2. Intrauterine contraceptive device according to claim 1, characterized in that said vertical support 1 is internally lined with a tubular element 3 made of copper. 3. Intrauterine contraceptive device according to one of claims 1 and 2, characterized in that said vertical support 1 has at its lower end 5 a hole 6 in which a thread is passed forming a loop 4. 4. Device An intrauterine contraceptive according to claim 3 wherein said thread is nylon. (CF DRAWING IN BOPI)

Description

The present invention relates to an intrauterine contraceptive treatment device. The invention relates more particularly to an intrauterine contraceptive treatment device, in the shape of an open heart upwards, of known type; in which provision has been made to modify the curvature of the semicircular segments which define its geometric structure, with the effect of greater safety of application and increased resistance to transverse stresses caused by uterine contractions.

In fact, an intrauterine contraceptive device is already known. Patent for an Italian invention No. 10533573, consisting of a vertical support for the upper end from which two semi-circular segments, concave inward, leave, the upper ends of which are separated; at the lower end of said support is fixed a loop of wire, for example nylon, which allows it to be easily removed. Said vertical support is further doubled inside a tubular copper element exerting a spermicidal action. This device is known sws-the name of DI # (Intra4 device! #Rin)
The application of said type known as IUD is carried out
according to the technique known as "push out". Indeed, according to said prior patent, there is provided a cannula or tubular sheath inside which can move a piston also provided with a nylon thread, fixed at the upper end and free at the lower end. In practice, the IUD loop is hooked to the knot formed by the plunger wire, and the
IUD in the hollow upper part of the cannula which we introduce into the vaginal canal, we then push the piston upwards to
release the device and apply it to the uterine cavity. Then, by gently pulling the plunger, separate it from the IUD loop that stays outside the cervical opening. The presence of
this loop also naturally makes it easier to remove the IUD when this operation becomes necessary.

This device nevertheless has some drawbacks, in particular that of not offering a guarantee of total irremovability, #and therefore of not preventing the IUD from being rejected under the effect of uterine contractions.

With the present invention, this non-negligible drawback can be fundamentally eliminated by adopting a geometrical conformation different from the lower sections of the semicircular segments which define the upper structure of the IUD.

In fact, after observing that the uterine contractions occur in the transverse direction, orthogonal to the vertical axis of the device (direction zz 'in FIG. 1a), the present invention proposes to introduce into the geometry of the two semicircular sections , lower, two successive curvatures, symmetrical with respect to the vertical axis of the support, the first turned outwards and the second inwards, so as to offer, with respect to said contractions, greater resistance than that which is observed with the known intrauterine contraceptive device.

The elimination of the disadvantages mentioned, combined with the maintenance and improvement of some of the advantages of the known IUD device and in particular the practical impossibility of bringing the upper ends of the two semi-circular segments together (their shape) and the guarantee given by mechanical action, to avoid any possible implantation of the ovum thanks to the uterine contractions which it causes continuously, make the IUD device of the invention a product of great value in the field of intrauterine contraceptives.

Consequently, the present invention has the specific object of an intrauterine contraceptive antiseptic device in the shape of a heart, open upwards, consisting of a lower vertical support.
t13 from the upper end from which two semicircular segments t2a and 2b) depart, concave inwards, the upper ends of which are separated, characterized in that said segments t2a and 2b) have at their lower part two successive curvatures, symmetrical by relative to the vertical axis of said support (1), the first (C1) facing outwards and the second (C2) inward.

As has already been said, the vertical support t1) is internally lined with a tubular element (3) made of copper. It also has at its lower end, an orifice through which a wire, preferably nylon, has been passed. forming a loop serving both the application operation and that of removing the device.

The invention will be understood more clearly with the aid of the following description of a preferred embodiment, description made with reference to the appended drawing in which: FIG. 1a is a front view of the IUD device according to the invention, FIGS. 1b and 1c represent, respectively, in side view, the device of FIG. 1a and the copper tube used in it, and, FIG. 2 represents the application cannula of the device of FIG.

Note in particular in the drawings Figures 1a and 1b) the IUD device available according to the invention in which we have designated by (1) the lower vertical support of the structure, from which the sem ~ nh semicircular leaves (2a and 2b) which form the characteristic heart-shaped structure, open upwards. We can clearly see the curvatures (C1 and C2Z, the first facing outward and the second inward, which have the lower sections of said two segments t2a and 2b). The support t1) has a copper lining tube (3) # inside, also shown separately on.

 figure lo. The lower end t53 of the support (1) is provided with a hole (6) through which passes a loop (4) of wire, preferably nylon.

In FIG. 2, the cannula for introduction t73 of the arrangement of FIG. 1a will be noted, in which the piston (6) moves at the upper end of which is fixed, in the hole t9), a wire (11) of which the lower end, left free, passes through the hole (10).

 It will be noted that the characteristic structural shape of the invention, represented by the presence of the curvatures (C1 and C2), increases the rigidity of the structure of the semicircular segments 12a and 2b), hence the greater resistance offered to stresses transverse caused by uterine contractions that occur in the Z-Zt direction (Figure la).

The present invention has been described with more specific reference to its specific embodiments, but variants and modifications may be made without departing from the scope of the protection conferred by the patent.

Claims (4)

1. Intrauterine contraceptive treatment device in the shape of a heart, open upwards, consisting of a lower vertical support (1) from the upper end from which two semicircular segments 12a and 2b) depart, concave inwards, the upper ends of which are separated, characterized in that said segments t2a and 2b1 have at their lower part two successive curvatures, symmetrical with respect to the vertical axis of said support (1) the first CC1) being turned towards the outside and the second (C2) inward.  2. Intrauterine contraceptive device according to claim 1, characterized in that said vertical support t13 is internally lined with a tubular element t3) made of copper. 3. Intrauterine contraceptive device according to one of claims 1 and 2, characterized in that said vertical support t13 has at its lower end t5) a hole t6) through which a wire is passed by forming a loop (4) . 4. Intrauterine contraceptive device according to claim 3 wherein said wire is nylon.