JPS581290Y2 - Intrauterine contraceptive device insertion tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in inserts for intrauterine contraceptive devices (I, U, D).

Traditionally, intrauterine contraceptive devices can be roughly divided into types that have pharmacological effects (those that emit hormones from the device, those wrapped in steel wire, those made of copper, etc.) and those that do not have pharmacological effects. Even if they have a pharmacological effect, they may be excreted due to uterine movement, etc., and those that do not have a significant pharmacological effect may be caused by the wide range of contact between the endometrium and the intrauterine contraceptive device. It is known that the contraceptive effect is related to the birth control effect, and in order to obtain a certain income effect, a product that can cover a wide range is required.

On the other hand, when inserting an intrauterine contraceptive device into the uterus, it must be passed through the narrow cervix that connects the outside and inside of the uterus, and for this reason, the cervix must be mechanically inserted with Although it may dilate, it is preferable not to dilate, as this can cause severe pain.

The present invention was devised in view of the current situation, and includes a mounting part that is integrally provided at the prong end to fit into and hold the rear end of the intrauterine contraceptive device, and also guides the tensioning part of the intrauterine contraceptive device in the longitudinal direction. It is an object of the present invention to provide an inserter for an intrauterine contraceptive device comprising a flexible and elastic intrauterine insertion section provided with a thread path, and a grip section connected to the intrauterine insertion section.

Hereinafter, typical embodiments of the present invention will be described with reference to the drawings.

The insertion device main body A is formed into an elongated shape made of synthetic resin or the like, for example, and has an intrauterine insertion section 1 at its distal end and a grip section 2 at its rear end.

The intrauterine insertion part 1 is made of flexible and elastic synthetic resin, rubber, etc. so that it can be freely bent according to the curvature of the uterus when the intrauterine contraceptive device B is inserted into the uterus.
Further, its wall thickness is thinner and thinner than other parts of the insertion tool main body A.

The intrauterine insertion part 1 is provided with a mounting part 3 at its tip for fitting and holding the rear end part 13 of the intrauterine contraceptive device B, and on the other hand, the intrauterine insertion part 1 is provided with a mounting part 3 for fitting and holding the rear end part 13 of the intrauterine contraceptive device B in the longitudinal direction. A thread path 4 for guiding the section 9 is provided.

The cross-sectional shape of the intrauterine insertion part 1 may be any shape as long as the intrauterine contraceptive device B can be inserted into the uterus, such as a triangle, a quadrangle, a polygon, a circle, an oval, etc., or a crack in the upper part thereof. There are some that have a number 5.

In addition, as described later, the intrauterine insertion part 1 has a crack 5 at the upper part.
If the device is provided with , the tensioning portion 9 of the intrauterine contraceptive device B can be easily passed through, making it convenient to handle the device.

The mounting portion 3 has an inner cross-sectional shape that is approximately the same size as the rear end portion 13 of the intrauterine contraceptive device B so that the rear end portion 13 of the intrauterine contraceptive device B can be inserted and held therein.

For example, as shown in FIG. 3, a crack 5 connected to the thread path is provided at the top so that the tensioning portion 9 of the intrauterine contraceptive device B can be easily passed through the thread path 4.

The thread path 4 is a groove provided so that the tensioning part 9 of the intrauterine contraceptive device B does not protrude from the intrauterine insertion section 1, and is, for example, a groove that matches the cross-sectional shape of the intrauterine insertion section 1, or a groove that is large enough for the thread to pass through. These include shallow grooves, grooves whose depth gradually becomes shallower toward the gripping portion, and the like.

Further, the thread path 4 does not have to be long enough to accommodate the entire length of the tensioning part 9 of the intrauterine contraceptive device B, and may be just a groove as described above, but for example, as shown in FIG. 4, the thread path 4 and An opening 6 may be provided on the opposite surface to allow the tensioning portion 9 of the intrauterine contraceptive device B to pass through.

In the intrauterine contraceptive device B, a core rod 7, a support rod 8, and a tension portion 9 are integrally molded from a slightly flexible and elastic synthetic resin.

The core rod 7 is somewhat thick-boned, and the support rods 8 are formed in short branch-like protrusions on the left and right sides of the tip of the core rod 7, and when this intrauterine contraceptive device B is inserted into the fundus 10 of the uterus. As shown in FIG. 7, the support rods 8 are expanded to the left and right of the core rod 7, respectively, so as to be in contact with the uterine wall 11.

In addition, the tension portion 9 and the lower end of the core rod 7 are formed to extend into a thin string shape,
Its tip is bent to protrude from the outer uterine wall 12, and the tensioning portion 9 is used to pull each support rod 8 in reverse when removing the intrauterine contraceptive device B from the uterus, as shown in FIG. It has an open umbrella shape and can be closed and taken out.

Therefore, this intrauterine contraceptive device B consists of this main body B and each support rod 8.
and are inclined at a certain angle of inclination θ.

That is, each support rod is formed into a thin elongated plate,
Each support rod 8 forms an appropriate inclination angle θ with respect to the center line of the core rod 7, and each support rod 8 is inclined obliquely with respect to the core rod I.

This inclination angle Zθ may be ZR>Lθ or lR<θ, and in short, each support rod 8 is inclined with respect to the core rod 7.

By doing this, the curved state of each support rod 8 and core rod 7 becomes 0-shaped and bent as shown in FIG. This is a deformation phenomenon that sometimes occurs.

This creates a blocking force when the intrauterine contraceptive device B attempts to escape from the cervix, and the torsional resistance of each support rod 8 prevents the intrauterine contraceptive device B from exiting the uterus. This creates a blocking effect and the intrauterine contraceptive device B does not easily escape.

An intrauterine contraceptive device B is attached to the insert main body A configured in this manner.
When inserting the device into the uterus by locking it, for example, prepare the insert main body A and the intrauterine contraceptive device B which have been sterilized separately, and first insert the insert into the uterus against the attachment part 3 of the insert main body Insert the rear end 13 of the contraceptive device B, lock and hold it.

As mentioned above, since the inner shape of the attachment part 3 is approximately the same size as the rear end part 13, the intrauterine contraceptive device B will not fall off during operation, and the intrauterine contraceptive device B will not fall off during operation. When inserting the rear end part 13 of B, the attachment part 3 is provided with a crack 5 that connects to the thread path 4, so there is no need to pierce the tension part 9 through the entire insertion tool as in conventional insertion tools. It does not require any operation and is easy to handle.

Furthermore, if the opening 6 is provided on the opposite surface of the thread path 4 in the direction of the gripping part and the tensioning part 9 is passed through, it is possible to reliably prevent the tensioning part 9 from protruding from the intrauterine insertion part 1, and The end of the tensioning part 9 can be reliably projected from the outer wall 12 of the uterus.

In addition, conventional devices were handled as a set with the intrauterine contraceptive device attached to the insert main body in advance, but according to the present invention, it is extremely easy to attach the intrauterine contraceptive device B to the insert main body A. Therefore, for example, when loading the intrauterine contraceptive device B on the patient, the insertion operation can be performed, and unlike conventional devices, the device can be sterilized and disinfected with the intrauterine contraceptive device attached to the insert body in advance. Since there is no need to store the two devices separately, it is possible to select any intrauterine contraceptive device according to the shape and size of the patient's uterus.
By sterilizing and disinfecting it, it can be used many times.

In addition, before inserting the intrauterine contraceptive device B, the size of the patient's uterus is measured and cleaned.

At this time, if you set a scale on the intrauterine insertion part 1 and peel it off, you can operate it while watching the scale according to the pre-measured length of the uterus.
Operation is performed safely and reliably, and efficiency is doubled.

Thus, for example, as shown in FIG. 2, when the insert main body A with the intrauterine contraceptive device B attached is gently pushed with the force 1 that reaches the fundus 10 of the uterus, the intrauterine insertion part 1 is flexible and elastic, so that
It flexes freely according to the shape of the uterus, making the insertion operation easy and causing no pain to the patient.

Conventional devices often cause pain to patients because they lack flexibility.

When passing through the intracervical canal, the intrauterine contraceptive device B becomes contracted due to its soft elasticity, and at that time, the rear end 13
is held by the attachment part 3, so it enters the uterus supported by the intrauterine insertion part 1 of the insertion tool main body A, and the uterine fundus 10.
When this point is reached, the intrauterine contraceptive device B expands, and if the insert main body A is gently pulled out, the intrauterine contraceptive device B is easily removed from the intrauterine insertion part 1, and the insert main body A is removed outside the uterus. As it is pulled out, the rear end 13 and the tensioning part 9 of the intrauterine device B
For example, the insertion tool body A can be sequentially pulled out from the attachment part 3 and left in the uterus, and the tip of the tensioning part 9 can be pulled out of the uterus to complete the insertion operation of the drawer-shaped 11, as shown in FIG. 7, for example.

In this way, the present invention can achieve the above-mentioned objectives.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a typical embodiment of the present invention, Fig. 2 is a partial plan view of the intrauterine contraceptive device installed, Fig. 3 is an enlarged view showing its locked state, and Fig. 4 is a perspective view showing a typical embodiment of the present invention. The figure is a bottom view showing another embodiment, FIG. 5 is a plan view of the intrauterine contraceptive device, FIG. 6 is a side view thereof, and FIG. 7 is an explanation showing the state in which the intrauterine contraceptive device is inserted into the uterus. 8 is a plan view showing the state of the intrauterine contraceptive device at the time of withdrawal, and FIG. 9 is a side view thereof. 1... Intrauterine insertion part, 2... Grasping part,
3...Mounting part, 4-...Thread guide, 5...
... crack, 6 ... opening, 7 ... core rod, 8 ... support rod, 9 ... tension part, 10
...Fund of the uterus, 11...Inner wall of the uterus, 12
......Outer wall of the uterus, 13...Posterior end, A.
...Insertion tool body, B...Intrauterine contraceptive device.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A flexible device that is integrally provided with a mounting part that fits and holds the rear end of the intrauterine contraceptive device at the prong end, as well as a thread path that guides the tensioning part of the intrauterine contraceptive device in the longitudinal direction. An insertion tool for an intrauterine contraceptive device comprising an elastic intrauterine insertion part and a grip part connected to the intrauterine insertion part. 2. The intrauterine contraceptive device insert according to claim 1, wherein the intrauterine insertion part is thinner and thinner than the gripping part. 3. Utility model registration claim described in paragraph 1, characterized in that the cross-sectional shape of the intrauterine insertion part is triangular, quadrangular, polygonal, circular, oval, etc., or has a crack in the upper part of these shapes, etc. intrauterine device inserter. 4. The cross-sectional shape of the thread path of the intrauterine insertion part is a groove that matches the cross-sectional shape of the intrauterine insertion part, a shallow groove that allows the thread to crawl through, a groove whose depth gradually becomes shallower toward the gripping part, etc. An inserter for an intrauterine contraceptive device according to claim 1, which is characterized in that: 5. The insertion tool for an intrauterine contraceptive device according to claim 1, wherein the intrauterine insertion part has an opening at the bottom.