DE102004061823A1 - Spiral intrauterine pessary for contraception, comprises internal memory wire with front end and plastic rear ball, and shroud from homogeneous mixture of flexible plastic and fine copper particles/hormones is surrounded to the memory wire - Google Patents

Abstract

The rear ball (6) is placed in a plastic cylindrical core for admitting copper wire coils, which are stored in the uterus interior in relation to the oviduct T-junction. The coil has a smaller diameter thickness than the ball. The ball carries a drillings (7) for pulling the pessary through (8) a thread, and a stamp pushes the pessary.

Description

The The invention relates to an intrauterine device (IUD) for pregnancy prevention, in particular an IUD, with the features of the preamble of the claim 1.

Intrauterine pessaries for pregnancy are described in a variety of forms. In general, an IUD consists of a stem and at least two of this projecting arms which are curved towards the stem. The stem and arms can be provided with copper wire spurs as in DE 19542386 A1 . US 5146931 and DE 4125575 A1 described. Even hormone-loaded IUDs for increasing the contraceptive effect are state of the art. All IUDs described so far have the disadvantage that insertion into the uterus and withdrawal may cause pain. The introduction requires experience. The danger of perforation, ie puncture of the uterine wall during insertion of the IUD, is one reason why intrauterine pessaries are used much less frequently than other pregnancy prevention methods. The contraceptive safety of the IUD is very high and the price for a long stay in the uterus is very favorable.

Object of the invention

Of the Invention is based on the object to describe an IUD which In production cheap and easy to handle. Also at the insertion into the uterus or when pulling out of the uterus through its straight, uniform and narrow form causes no pain, at the same time neither the uterine wall perforated or out of the uterus without intended train on which thread falls out.

solution

The The object of the invention is achieved by an IUD with the features of claim 1. Further embodiments of the new IUD are described in subclaims 2 to 6.

Description of the invention

The new IUD, consists of an inner wire of "memory" - material (memory wire), and an outer sheath of one elastic plastic with homogeneous admixture of fine copper particles or a hormone (embodiment I) where a total of one cylinder with a uniform diameter and two rounded ends are created, with the rounded ends This is due to the fact that two balls of solid plastic, the memory wire at its two Inseparably accommodate ends with the rear ball a hole for Pulling and knotting a thread which serves the IUD from the uterus to be able to pull out.

In a possible embodiment without admixture of copper particles in the outer shell (embodiment II), the rear ball can pass into a cylinder of solid plastic which can be used to hold a copper wire coil, the cylinder being smaller by the thickness of the copper wire Diameter than the rear ball, the transition between the rear ball or copper wire coil to the plastic sheath of IUD is stepless and smooth. Other embodiments of the invention can cause cylinder and the copper wire coils so stored they will come to rest on other parts of the IUD (embodiment III).

The IUD is in an insertion sleeve stored out of which the IUD with the help of a punch pushed out can be.

The IUD is thereby placed in the uterus, that the insertion sleeve under view in the cervix introduced Then, with the help of the punch, the IUD from the sleeve so far push out that the IUD is completely in the uterus interior (Cavum Uteri) to come to rest.

Of the inner memory wire shapes the IUD at body temperature inside the uterus spiral around, creating at least two curves, a first inner, in diameter much smaller and a second outer, in Diameter larger curve, which is the uterine wall from the inside, with the first smaller curve preventing it the IUD when pushing forward the uterine wall perforated, or that the tip of the IUD in one of the two tubal ostia (Entrance to the fallopian tube). The lower end of the IUD comes above the inner cervix lie, with the thread, protruding from the outer cervix and can be shortened by the user in a suitable length.

special advantageous if instead of known from the prior art Copper wire coil, a homogeneous mixture of soft plastic and very fine metallic copper particles for sheathing the memory wire was used.

Becomes pulled on the thread leaves pulling out the IUD while passing through the cervical canal, brought the IUD in a straight shape and thus be painlessly removed for the woman can.

Further Features of the invention are the subject of the dependent claims and are used in conjunction with other advantages of the invention an embodiment explained in more detail.

Brief description of the figures

In of the drawing are three exemplary embodiments represented the invention. Show it:

1a and 1b The IUP with homogeneous admixture of fine copper particles (embodiment I) in a straight form in a sectional view ( 1a ) and after insertion in the uterus interior ( 1b ).

2a and 2 B The IUD according to 1 with a copper wire coil instead of copper particles in the sheath (Embodiment II).

3a and 3b The IUD according to 2 without plastic sheath.

4a and 4b Embodiment III of the IUD with 2 copper wire coils.

5a and 5b IUD with insertion sleeve 5a , Cross section 5b

6 IUD with insertion sleeve in the cervix

7 Representation according to 6 Cross section

8th IUD in the uterus interior

9 Representation according to 8th Embodiment with two copper wire rinses

10 IUD after passage through cervical canal.

figure description

The 1a and 1b show the IUD 1 ) in its two possible forms 1a and 1b , 1a shows the IUD in the sectional view as it is inside the insertion sleeve 13 ) lies. 1b shows the IUD after forming in a spiral through the memory wire 3 ) in the uterus interior. In this embodiment of the IUD, copper is homogeneously mixed as a fine powder with the elastic plastic sheath. Essentially, the IUD consists of one with elastic plastic 4 ) jacketed memory wire 3 ) whose two ends each in a solid plastic ball 5 u. 6 ). The two balls have the task, the sharp ends of the memory wire against breaking out of the soft plastic sheath 4 ). The lower ball 6 ) also carries a hole 7 ) for pulling and knotting a thread 8th ) Allowing the IUD if necessary from the uterus interior 12 ) can be pulled out.

2 is the representation of an embodiment of the IUD according to 1 with a copper wire sink 10 ) at the distal end of the IUD.

3 is the representation according to 2 without plastic sheath and without copper wire coil. At the distal end goes the lower ball 6 ) in a cylindrical core 11 ) above, on which the copper wire sink 10 ), this core being wound around the thickness of the copper wire coil 10 ) smaller diameter than the rear one 6 ) Ball has, so that the rear ball 6 ) Stepless in the wrapped with copper wire cylindrical core 11 ) passes over.

4 is the representation of a third embodiment of the IUD. Here are the copper wire coils 10 ) placed in two places so that these opposite the fallopian tube entrances 9 ) come to rest.

5 Represents an IUD 1 ) according to the embodiment in 4 with two copper wire rinses 10 ) in an insertion sleeve 13 ). With the help of the stamp 14 ) can the IUD 1 ) through the cervix 16 ) in the uterus interior 12 ) are advanced.

6 and 7 put the IUD together with insertion sleeve 13 ) in the cervix 16 ), where 7 a sectional view is.

In 8th and 9 is the IUD in uterus interior 12 ). In 9 comes an embodiment with two copper wire rinses 10 ) to representation. The two copper wire rinses 10 ) come in the upper part of the uterus 15 ) where also the fallopian tubes lie 9 ) in the uterus interior 12 ).

10 is the representation of the insertion of the IUD 1 ) as soon as the IUD leaves the insertion sleeve 13 ), the tip of the IUD a first smaller curve 17 ). This mechanism serves in addition to the blunt upper ball 5 ), to protect the uterus 15 ) before an injury (perforation) by the IUD 1 ).

Claims (6)

Intrauterine Pessary (IUD) 1 ), for insertion into the uterus 15 ) for pregnancy, in particular IUD, with an inner wire of memory material 3 ), with the memory wire 3 ) of the IUD at its two ends a front 5 ) and a rear ball 6 ) made of solid plastic for safe, inseparable recording of the memory wire 3 ), wherein a sheath 4 ) from a homogeneous mixture of elastic plastic and fine copper particles or hormones the wire 3 ) completely surrounds, while inserting the IUD 1 ) in the uterus interior 12 ) the memory wire causes a deformation of the IUD causing a helical IUD with at least two curves being formed, the first smaller curve 17 ) immediately after pushing out the IUD 1 ) from an insertion sleeve 13 ) comes about a perforation of the uterus 15 ) to prevent. IUD according to claim 1, characterized in that the rear ball 6 ) in one of the possible embodiments in a cylindrical core 11 ) made of solid plastic which goes over to receive a copper wire sink 10 ) can be used, this core 11 ) one to the thickness of the copper wire coil 10 ) smaller diameter than the rear ball 6 ), wherein the rear ball 6 ) steplessly into a copper wire coil 10 ) passes over. IUP 1 ) according to claim 1 and 2, characterized in that in one of the possible embodiments, two copper wire coils 10 ) are stored so that these in the uterus interior 12 ) opposite the fallopian tube junctions 9 ) come to rest. IUP 1 ) according to previous claims, characterized in that a total of the sheathing of the memory wire with an elastic plastic, a cylinder with a uniform diameter along the entire length is formed. IUP 1 ) characterized in that the rear ball 6 ) a hole 7 ) for pulling a thread 8th ) which serves the IUD 1 ) from the uterus 15 ) to be able to pull out. IUP characterized in that an insertion sleeve 13 ) picks up the IUD from which the IUD with the help of a punch 14 ) can be pushed out.