JPH08322862A - Intracoropneal indwelling appliance for improving urination - Google Patents

Abstract

PURPOSE: To surely prevent the intra-urethral movement of an indwelling appliance under intracorponeal indwelling by coiling a wire of a shape memory alloy to continuously form a bobbin-like part, a first nodal part, a straight part and second nodal part and subjecting the coil to a memory heat treatment so as to make the temp. near the body temp. as a transformation point. CONSTITUTION: This intracorponeal indwelling appliance for improving urination is formed by coiling the wire of the shape memory alloy having the transformation point of, for example, 38 to 40 deg. to continuously form the bobbin shaped part 1a wound with the wire to a coarser winding pitch at the front end, the first nodal part lb, the straight part 1c and the second nodal part ld and subjecting the coil to the memory heat treatment. The coil is provided with a tail part in place of the first nodal part lb and the second nodal part ld. The coil is subjected to the memory heat treatment to the first transformation point of, for example, 38 to 40 deg.C and the second transformation point of, for example, about 25 deg.C, in the form of finely tightening the winding. As a result, the difficulty in operation at the time of the movement, insertion and removal of the appliance under intracorponeal indwelling is improved. In addition, the urination is assured by expanding the internal cavities of the respective urological organs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a urethral stricture caused by a urological disease by enlarging and improving the urethral stricture to secure the lumen of the duct, preventing movement during indwelling and urinary incontinence, and insertion and insertion. The present invention relates to the realization of a device for indwelling in the body for improving micturition, which can eliminate the damage of the urethra and the pain of the patient during the removal.

[0002]

2. Description of the Related Art Conventionally, a steel wire or a stainless steel wire has been used as an indwelling device for expanding the urethra, and a tubular product having a diameter required for indwelling the body has been used. The patient suffered a great deal of pain at the time, the urethra could be damaged, and high skill was required. In addition, the device sometimes moved during the indwelling to lose its effect.

[0003]

DISCLOSURE OF THE INVENTION Problem to be Solved by the Invention It is possible to reliably prevent the indwelling device from moving inside the urethra during indwelling in the body, which is a drawback of the conventional indwelling device for improving urination. Eliminating patient distress and urethral damage.

[0004]

Means for Solving the Problems The present invention utilizes a property of shape restoration by a temperature change exceeding a transformation point of a shape memory alloy to memorize a shape after indwelling in a body and make it a shape convenient for insertion into the body. (EN) An indwelling device for improving urination, which is deformed and inserted, heated, restored to a predetermined shape and fixed to the urethra.

The indwelling device for improving urination according to claim 1 has a shape-memory alloy filament wound in a coil shape to continuously form a spindle-shaped portion, a first joint portion, a straight portion and a second joint portion, so that the body temperature is maintained. The memory heat treatment was performed so that the temperature of was the transformation point. The fusiform shape matches the shape of the urethra in the anterior line to prevent movement of the indwelling device into the urethra. It is inserted and fixed in the position.

In the indwelling device for improving urination according to a second aspect of the present invention, a tail portion is provided in place of the first and second node portions of the preceding paragraph to prevent movement in the urethra.

The indwelling device for improving micturition according to claim 3 is formed in the same manner as in claims 1 and 2 by using a linear strip of bidirectional shape memory alloy, and has a first transformation point slightly higher than body temperature and a thin tube. Shaped into shape and subjected to memory heat treatment at a second transformation point lower than body temperature.

[0008]

[Operation] Since the indwelling device for improving urination according to claim 1 is subjected to memory heat treatment in a shape as shown in Fig. 1, it is deformed into a coil shape having an outer diameter of about 3 mm which is convenient for insertion of the urethra before use, so that the affected part of the urethra is affected. And fix the spindle-shaped part just below the prostate and the first and second nodes at the front and back of the sphincter with a sphincter between them, and then inject hot water to heat the shape memory alloy to a temperature above the transformation point. For example, the indwelling device for improving urination is restored to its original shape and has a large diameter, so that it can be placed in close contact with the affected area. When removed, if cold water is injected and cooled, the shape memory alloy becomes a flexible material with a small elastic coefficient at low temperature, so it can be safely and easily withdrawn. (Fig. 2)

The urinary indwelling indwelling device of the second aspect fixes the tail portion to the curved portion of the urethra, and the inserting and fixing methods are the same as those in the preceding paragraph. (FIG. 4)

The indwelling device for improving micturition according to claim 3 uses a bidirectional shape memory alloy, and has a thick diameter as shown in FIG. 1 as a shape at a high temperature, and a tubular shape with a thin diameter as a shape at a low temperature. If the urethra is subjected to memory heat treatment, cooled and inserted into the affected area of the urethra before use, and warm water is injected to heat it, the shape at the time of high temperature can be restored and it can be placed in close contact with the affected area.
When removing, if cold water is injected and cooled, it returns to the shape at low temperature and can be withdrawn safely and easily.

[0011]

EXAMPLE An example of an indwelling device for improving urination according to the present invention will be described with reference to FIGS. 1, 2, 3 and 4.
The indwelling device for improving urination according to claim 1 has a spindle-shaped portion 1a and a first knot portion 1 in which a wire of a shape memory alloy having a transformation point of 38 ° C to 40 ° C is wound in a coil shape to roughen the winding pitch of the tip.
b, the linear part 1c and the second node part 1d are formed into a continuous shape and subjected to a memory heat treatment, and the indwelling device for improving urination according to claim 2 has a tail part (instead of the first node part and the second node part of the preceding paragraph). 2c) is provided.

The indwelling device for improving urination according to claim 3 has the same shape as that of the preceding paragraph and has a first transformation point of 38 ° C to 40 ° C and a second transformation point of about 25 ° C in a thinly wound shape. It was heat treated.

As for the shape of the indwelling device for improving urination, various application examples other than this embodiment can be considered depending on the body shape of the human body and the state of the affected part. In addition, in order to expand the affected area in the body where it is difficult to introduce hot or cold water from outside the body, after indwelling the indwelling device for improving urination, a high-frequency magnetic field is applied from the patient's body surface by an electromagnetic coil, etc. It is also possible to indirectly heat the alloy using the effect of eddy current and perform a treatment to restore the memory shape.

[0014]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the drawback of the conventional indwelling device for improving urination, which is a drawback, is the difficulty in operating the device during indwelling, insertion and removal. In addition to improving, it can expand urinary organs, especially atrophic kidneys, obstructed ureters and urethral lumens to secure micturition, urinary incontinence, and patient pain and ureteral and urethral damage. Is.

[0015]

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an indwelling device for improving urination in a body.

FIG. 2 is an explanatory view showing indwelling of an indwelling device for improving urination in the body.

FIG. 3 is a front view showing an embodiment of an indwelling device for improving urination in the body.

FIG. 4 is an explanatory view showing indwelling of an indwelling device for improving urination in the body.

[Explanation of symbols]

 1, 2 Indwelling device for improving urination

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rikio Honda 6-7 Ogimachi, Miyagino-ku, Sendai City, Miyagi Prefecture Honda Seiki Co., Ltd.

Claims (3)

[Claims] 1. A spindle-shaped portion (1a), a first joint portion (1b), and a straight portion (1c) formed by winding a shape-memory alloy filament in a coil shape.
An indwelling device for improving urination which is obtained by continuously molding the second node part (1d) and subjecting it to a memory heat treatment. 2. A urinary indwelling indwelling device for improving urination, which is formed by continuously winding a shape-memory alloy filament into a coil to form a spindle portion (2a), a straight portion (2b), and a tail portion (2c), and subjecting it to a memory heat treatment. Equipment. 3. The indwelling device for improving urination according to claim 1 or 2, wherein a wire of bidirectional shape memory alloy is wound in a coil shape and subjected to a memory heat treatment.