JPS63317150A - Extracorporeal treatment apparatus - Google Patents

Abstract

PURPOSE:To crush a calculus by clearly catching the image thereof, by simple constitution such that a pouch filled with an ultrasonic wave propagating body is interposed between a shock wave generator and the surface of a human body and arranging an ultrasonic probe to the pouch on the surface side thereof. CONSTITUTION:After the surface of a pouch 5 is closely brought into contact with the surface of the body opposed to the affected part, the affected part is scanned by the ultrasonic probe 7 arranged to the pouch 5 on the surface side thereof to detect the position of a calculus. Subsequently, shock wave generator 1 is operated so that the other focus Fb of a parabolic surface body 2 reaches the position of the calculus and high voltage discharge is subsequently performed by a discharge electrode 3. Since the shock wave generated from said generator 1 is converged to the calculus present at the other focus Fb of the parabolic surface body 2, the calculus is crushed effectively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is an extracorporeal treatment device, in particular, an ultrasonic viewing device that observes the position of a stone, etc. inside the body, and uses shock wave energy generated outside the body. The present invention relates to an ultrasonic probe in an extracorporeal treatment device that focuses and treats.

[Prior Art] An example of a conventional external treatment device of this type is an ultrasonic treatment device previously proposed by the applicant (Japanese Patent Application No. 61-282).
No. 980). As shown in Fig. 4.5, this ultrasonic treatment device includes an ultrasonic observation means 11 (position detection means) for detecting the position of a stone in the body, a positioning signal generation means 12, a focal point moving means 13, and a stone detection means. Shock wave generating means 14 for pulverization is included.

The ultrasonic observation means 11 includes an ultrasonic observation device 17 that emits ultrasonic waves toward a human body 15 to detect the position of a calculus 16 inside the body, and a C.
It is composed of a display device 18 that displays on a screen such as RT.

The positioning signal generating means 12 provides a pointing marker or the like at a target point on the screen of the display device 18, and sends a positioning signal to the focal point moving means 13 so that the focus of the rock crushing shock wave is placed at the position of the pointing marker. It is composed of a generator 20. That is, this device 20 performs image processing on the stones whose position has been detected, and an operator such as a doctor recognizes the size and number of the displayed stones, and if there are multiple stones, crushes them in order from the largest stone. Should I process it?
In addition, in the case of coral-shaped stones, signals such as which part to begin crushing and signals to change the focal point of the shock wave by periodically detecting the position and size of the stone as the position of the stone shifts when crushed. etc., the most effective treatment signal is indicated on the screen using a light pen or the like, and the position data signal such as the processing order is memorized, and this positioning signal is directed to the impulse wave generator drive device 19 during stone crushing processing. This is something that occurs.

The equilibrium wave generator driving device 19, which is the focal point moving means, includes:
It is comprised of a drive device that moves the pouch 21 and an equilibrium wave generator 22, which will be described next, using a numerically controlled robot or the like in accordance with the positioning signals described above. That is, the above-mentioned balanced wave generator 2
2 is a device in which a large number of ultrasonic transducers 23 made of piezoelectric elements are arranged and fixed in a mosaic manner on the front surface of a mounting plate 24 formed into a spherical shape, with the front shock wave generation surface facing toward the human body 15. Between the acoustic wave generator 22 and the human body 15, there is a pouch 21 made of an ultrasonic propagator having liquid injection and pressure control means.
The pouch 21 is filled with a shock wave transmission liquid such as water.

The shock wave generating means 14 comprises a well-known ultrasonic pulse voltage generating circuit, and the circuit drives each of the ultrasonic vibrators 23.

The ultrasonic treatment device configured in this way has a fifth
It operates as shown in the figure. That is, first, the position of the stone in the body is detected by the observation means 11, and then the condition of the stone caught by the observation means is analyzed by the positioning signal generation means 12, and the most suitable method for treating the stone is determined depending on the type of stone. A treatment is selected and determined by an operator such as a doctor, and positioning signals such as the processing order are input and stored. Then, in accordance with this positioning signal, the focus moving means 13 operates to drive the pouch 21 and the impulse wave generator 22, so that the aiming position of the shock wave is aligned with the calculus. Thereafter, a shock wave is generated by the shock wave selling means 14 to destroy the stone.

Also, after the shock wave has been generated a specified number of times, the above operation will be temporarily stopped, the size of the crushed stone, the focus position of the shock wave, etc. will be confirmed, and the above operation will be repeated until the stone is completely crushed. It has become.

[Problems to be solved by the invention] By the way, in this type of conventional external treatment device,
Ultrasonic waves are used to observe and target the location of affected areas such as stones, but because they are installed far away from the human body,
It was not possible to obtain a good tomographic image, and it became difficult to aim.

Therefore, an object of the present invention is to eliminate the drawbacks of conventional external treatment devices of this type, as described above, to obtain a clear stone image with a simple structure, and to be able to aim easily. An object of the present invention is to provide an extracorporeal treatment device.

[Means and effects for solving the problems] The present invention has the following features:
In order to achieve the above object, the above-mentioned equilibrium wave generation body is disposed between the above-mentioned acoustic wave generation body and the human body surface via a pouch filled with a shock wave propagation body, and the surface of the above-mentioned pouch is It is characterized by the placement of an ultrasound probe for detecting the location of the affected area.

[Example] Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1(A) is a longitudinal cross-sectional view of an ultrasound probe, an acoustic wave generator, and a pouch of an ultrasound observation device in an extracorporeal treatment device showing an embodiment of the present invention, and FIG. 1(B) is a plan view of the ultrasound probe and pouch, and FIG. 2 is a plan view of the ultrasound probe and pouch, and FIG.
) is an enlarged vertical cross-sectional view of the upper part of . In this embodiment, a high-pressure discharge type shock wave generator is used for generating shock wave energy for stone crushing.

This high-pressure discharge type balanced wave generator 1 is composed of a parapet head 2 made of a metal plate, a high-voltage discharge electrode 3, and a high-voltage power source 4. 5 is attached to the upper edge of the parapet face body 2 via a bellows 6. In the present invention, an ultrasonic probe 7 consisting of an ultrasonic transducer array is fixed to the upper surface of the pouch 5 via a support member 8 (see FIG. 2).

This ultrasonic probe 7 is connected to an observation device (not shown) by a lead wire 9. The center point between the discharge electrodes 3 is one focal point Fa of the parapet surface body 2, and the shock wave is focused on the other focal point Fb, and by placing a stone, etc. at this focal point Fb, the stone is effectively crushed. It has become so.

The pouch 5 is made of a material such as Votex (trade name) that allows gases such as air to pass through but not liquids such as water, and the inside of the pouch 5 is filled with a shock wave transmission medium such as water. It also has liquid injection and pressure control means and is deformable.

The ultrasonic probe 7 of the ultrasonic transducer array is
For example, it is a thin piezoelectric film type material such as PVDF (polyvinylidene fluoride), and is attached to the surface of the pouch 5 so that it can be linearly scanned or sector scanned.

The external treatment device in this embodiment configured as described above operates as follows. That is, first, the surface of the pouch 5 of the external treatment device is brought into close contact with the patient's body surface facing the affected area, and then the affected area is scanned by the ultrasonic probe 7 to detect the position of a stone or the like. Next, after operating the acoustic wave generator so that the other focal point Fb of the parapet face 2 comes to the position of the stone, a high voltage discharge is generated by the discharge electrode 3. Then, the shock wave is focused on the stone at the other focal point Fb of the parapet face 2, so that the stone is suitably crushed.

As described above, according to the external treatment device of the present invention, since the observation section consisting of the ultrasonic probe 7 is in close contact with the patient's body surface, the distance to the affected area can be minimized. , Observation becomes accurate and easy, stones etc. can be detected accurately, and the piezoelectric film type such as the above-mentioned PVDF can use a high ultrasonic frequency, so it is possible to use a conventional piezoelectric vibrator made of ceramic etc. The resolution is improved compared to a probe, which allows for more precise detection.

Further, as described above, a support member 8 that supports the probe 7 is provided.
It is sufficient to simply arrange the pouch 5 on the surface of the pouch 5, and it is possible to obtain extremely remarkable effects such as being extremely simple and inexpensive compared to the conventional method.

Further, the probe 7 consisting of the ultrasonic transducer array was arranged linearly in the above embodiment, but this is different from that shown in FIG.
), As shown in (B), the piezoelectric film type ultrasonic probes 7A are arranged concentrically in parallel and divided into eight equal parts in the circumferential direction, respectively, a-a, b-b, and c.
If more tomographic images are obtained by scanning in the -c and dd directions, the location of the stone can be more easily and accurately determined.

In the above embodiment, a high-pressure discharge type is used as the acoustic wave generator, but it goes without saying that it may be an ultrasonic type made of a piezoelectric element.

[Effects of the Invention] As explained above, according to the present invention, it is possible to very easily and clearly capture a stone image, etc. with an extremely simple structure, and to effectively crush it, which is different from conventional external methods of this type. It is possible to provide an extracorporeal treatment device that completely eliminates the drawbacks of treatment devices.

[Brief explanation of drawings]

FIG. 1(A) is a vertical cross-sectional view of an ultrasonic probe and an acoustic wave generator in an extracorporeal treatment device showing an embodiment of the present invention, and FIG. 1(B) is a longitudinal sectional view of the above-mentioned FIG. A) is a plan view of the ultrasonic probe; FIG. 2 is an enlarged vertical cross-sectional view of the main parts of the ultrasonic probe shown in FIG. A perspective view and a plan view showing another example of an ultrasonic probe, FIG. 4 is a schematic configuration diagram showing an example of a conventional ultrasonic treatment device as an extracorporeal treatment device, and FIG. FIG. 5 is a block diagram showing the operating order of the ultrasonic treatment device of FIG. 4; ３・・・・・・・・・・・・・・・Discharge electrode (equilibrium wave generator) ４・・・・・・・・・・・・・・・High voltage power supply (〃
)5・・・・・・・・・・・・Pouch 7.7A・
...Ultrasonic transducer array (ultrasonic probe) procedure amendment (voluntary) 1. Display of case Location of patent application No. 153163 of 1988
2-43-2 Hatagaya, Shibuya-ku, Tokyo Name
(037) Olympus Optical Industry Co., Ltd. 4
, Agent Address: 5-52-14-6 Matsubara, Setagaya-ku, Tokyo Contents of Amendment (1) The scope of the patent claims will be amended as shown in the attached sheet. (2) "Filling" written in the last line of page 5 of the specification is "filling"
It will be changed to (3) "External method" written at the end of the last line on page 7 of the specification will be changed to "external method." (4) "External method" written in the beginning of line 2 and line 11 of page 8 of the specification will be changed to "external method." (Attachment) "2. Claims: In an extracorporeal treatment device that observes the location of an affected area such as a stone in the body using an ultrasonic observation device and treats it by focusing shock waves generated outside the body, and the surface of the human body, the above-mentioned acoustic wave generator ′ is disposed via a pouch filled with an ultrasonic propagator, and an ultrasonic probe for detecting the position of the affected area is provided when the surface of the pouch is An extracorporeal treatment device characterized by the placement of a child.

Claims (1)

[Scope of Claims] An extracorporeal treatment device that observes the location of an affected area such as a stone in the body using an ultrasonic observation device, and focuses shock waves generated outside the body for treatment, comprising: In between, the shock wave generator is disposed via a pouch filled with an ultrasonic propagator, and an ultrasonic probe for detecting the position of the affected area is disposed on the surface of the pouch. External treatment device.