JPS61226030A - Shock wave generator for stone crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an equilibrated wave generator for lithotripsy used for medical lithotripsy.

There are two methods for crushing stones within a living body: a method in which a crushing instrument is introduced directly to the site and a method in which stones are crushed indirectly from outside the body. Direct methods include forceps, explosive crushers, and spark discharge devices.

On the other hand, as an indirect method, there is a method in which an equilibrated wave is generated by electric discharge outside the body, and the wave is focused on a stone site inside the body using a reflective focusing mirror having a spheroidal structure to crush the stone.

The latter method has the advantage of being able to fracture stones in areas where it is impossible to insert instruments using the former direct method, but there is a risk of electric shock as it generates an equilibrated wave due to high-voltage discharge, and the high-voltage There are drawbacks such as the inability to record electrocardiograms and pulse pulses during treatment due to the effects of electrical discharge.

Therefore, the present invention was made as a result of focusing on the equilibrium waves generated by the explosion of explosives in order to eliminate the drawbacks of the above-mentioned indirect method.

We have already provided an equilibrated wave generator that emits an equilibrated wave generated from the tip of a metal tube into a reflected and focused area, but as a result of intensive study on this equilibrated wave generator, we have developed a stone crushing device based on this device. However, it was recognized that it would be an excellent impact wave generator.

This crushing device has a container containing explosives and an igniter at the tip of a thin tube that can be inserted into the organ where urinary stones exist, and crushes the urinary stones when they occur. The present invention is a urinary stone crushing device characterized by the following features: 1. The present invention develops this urinary stone crushing device into an equilibrated wave generator for a reflective focusing mirror.

That is, the acoustic wave generator of the present invention is provided with a container containing an explosive and an igniter at the tip of the thin tube to form an explosive part that generates an equilibrated wave by guiding it to the reflection focusing area. , The container forming the explosion part is made of a fragile material, and is destroyed when an equalization wave is generated.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the balanced wave generator of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the equilibrated wave generator of the present invention focuses an equilibrated wave using a reflective focusing mirror 1, and irradiates it from outside the body to a stone 2 inside the body, thereby generating an equilibrated wave in a stone crushing device that performs crushing treatment. This relates to the wave generating tool 3. The reference numeral 4 in FIG. 1 shows the basic structure of the X-ray generator 3, and 5 is an explosion part provided at the tip of a thin tube 6 to be inserted into the reflection focusing area. , a cylindrical container having a closure stopper 7, and an igniter 10 containing explosives 8 and ignition powder 9 is housed inside the container. Reference numeral 11 denotes a leg wire for electrically igniting the igniter, which passes through the center of the closed X stopper and is fixed, passes through the inside of the thin tube 6, and is led out from the rear end of the thin tube.

The explosion part 5d: usually consists of a cylindrical container,
In the case of the present invention, this container is made of a resistor and a material that is weak in Eft when the explosion 8 occurs, such as synthetic resin or natural resin. Generally, materials such as acrylic resin, polyethylene resin, and vinyl chloride resin are used, and the thickness of the material is preferably 0.6 mm or less.

In the explosion part 5, it is preferable to use the opening of the tip of the container, and to cover the exposed surface of the explosive with a waterproof material different from that of the container.

Also, depending on the type of explosives 8 used, 10 igniters for detonating the ammunition 8 may not be provided, and direct electric ignition (
(e.g. heating of platinum wire), laser ignition, fuse ignition,
The structure may be such that the explosive is detonated by detonating a detonating wire.

In the embodiment shown in FIG. 2, the thin tube 6 and the explosive portion 5 provided at its tip are made of the same diameter and are connected at the plug 7, but this connection method is arbitrary. For example, the connection method shown in the embodiment of FIG. 3 or the reverse connection method can also be adopted.

In the embodiment shown in FIG.
It is inserted and fixed inside.

Further, since the thin tube 6 is for setting the explosion part 5 within the reflection and focusing area, it is preferably made of hard resin or metal, and it is easy to accurately place the broken explosion part 5 inside the reflector. It is preferable to attach a ring or a convex object to a part of the thin tube in order to set the temperature.

The shock wave generator of the present invention shown in the above embodiments is difficult to detonate because the container constituting the explosion part provided at the tip of the thin tube is made of a dangerous material. It does not act as a resistor against the container and is completely destroyed in the event of an explosion.Therefore, the shock wave generated by the explosion is not affected by the container, and as shown in the schematic diagram in Figure 4, the shock wave generator generates a spherical shape. propagate to. In FIG. 4, arrows indicate the direction of propagation of the balanced waves.

Therefore, by detonating the explosion section of the present invention at a focal point within a reflecting mirror with a reflecting surface having a spheroidal structure, the generated equilibrium wave is efficiently reflected and focused at the other focal point, so the focal point is The pressure is extremely high.

The explosion part ( Explosive lead azide 5m!7, container material acrylic resin, container outer diameter 3 mm, container inner diameter 2.4 mm) in Sesotho 12, size 0.9 CrnX] (-mx 1.5 Toriichi, in "Equilibrium wave generation of the present invention underwater" 1.
As a result of the explosion, it was found that the kidney stone was crushed into a sand-like structure large enough to be expelled naturally7.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a cross section of a main part of a stone crushing device in an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of an embodiment of an equalizer wave generator of the present invention Figure 2 shows an example in which the explosion part 5 and the ll+llll pipe 6 have the same diameter, and Figure 3 shows an example in which the diameter of the explosion part 5 is made smaller than the diameter of the thin tube 6. are shown respectively. Figure 4 shows the explosion part 5
FIG. 2 is a schematic diagram showing the propagation direction of an equilibrium wave generated when an explosion occurs. 1...Reflection focusing mirror 2...Calculation 3...Equilibrium wave generator 4...X-ray generator 5...Explosive part 6...
Thin tube 7... Closed stopper 8... Spraying powder 9...7
one

Claims (1)

[Claims] (1) A container containing an explosive and an igniter is provided at the tip of the thin tube to form an explosive part that generates an equilibrated wave by guiding it into an equilibrated wave reflecting and focusing mirror, and the explosive part 1. An equilibrated wave generator for a stone crushing device, characterized in that a container forming the chamber is made of a fragile material so that it is destroyed when an equilibrated wave is generated.