JPH08308849A - Percussion wave therapeutic device - Google Patents

Abstract

PURPOSE: To improve reliability of a percussion wave therapeutic device and extend the life of this device, by performing water absorption proofing treatment of an acoustic matching layer easily and effectively for improving water- proofness of a piezo element or the like. CONSTITUTION: This percussion wave therapeutic device is provided with a piezo element 1a which is a part of a percussion wave generating source for generating the percussion wave, an acoustic matching layer 7 formed on a percussion wave radiated face of the piezo element 1a, water 15 which intervenes between this acoustic matching layer 7 and a subject and makes percussion wave transmitted, and a resin thin film 11 which has expansibility and is formed at least on the face of the percussion wave transmitting side of the acoustic matching layer 7.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention treats an object to be treated such as a cancer tissue or a calculus by crushing it by a thermal effect caused by a shock wave obtained by ultrasonic wave transmission or the like and the convergent energy of the ultrasonic wave. The present invention relates to a shock wave treatment device, in particular, a type that generates a shock wave by applying a high voltage or high current to a shock wave source, such as a piezo type that uses a piezo element (piezoelectric element) or an electromagnetic induction type that uses an electromagnetic induction phenomenon. Shock wave treatment device.

[0002]

2. Description of the Related Art A shock wave treatment device is of a piezo type using a piezo element as a shock wave source, a spark type using a spark electrode as a shock wave source, or an electromagnetic induction type using a shock wave generated by an electromagnetic induction phenomenon. There are various types, but among them, the piezo-type shock wave treatment device has been particularly attracting attention because a stable shock wave output can be obtained and the running cost for generating the shock wave is low.

FIG. 6 shows a schematic structure of an applicator which is a shock wave generator of a piezo-type shock wave treatment device. The applicator 30 shown in FIG. 6 is provided on a base 31, and has a piezo element 32 formed in a spherical shell shape (concave shape) as a whole, and a water element attached to the front portion of the piezo element 32 on the shock wave transmitting side. And a bag 33. In addition, a hole is formed in the center of the base 31, and an ultrasonic probe 34 for ultrasonic imaging is inserted into this hole.

Since the piezo element 32 is formed in a concave shape, it has a geometric focus. Further, electrodes (not shown) are formed on the front and back surfaces thereof, and these electrodes are connected via lead wires 35 and 36 to a drive circuit 37 for generating a high voltage pulse for driving the piezo element 32.

Further, the water bag 33 contains water which is an acoustic propagation medium for well propagating a shock wave (ultrasonic wave). An acoustic matching layer 39 for acoustically coupling the piezoelectric element 31 and the water 38 in the water bag 33 is formed on the inner peripheral surface of the piezoelectric element 32 and the base 31 in the vicinity thereof. The acoustic matching layer 39 uses a curable liquid resin such as an epoxy resin. Further, the acoustic matching layer 39 is provided with an air intake / exhaust port 40 for intake / exhaust of air into the water bag 33.

When a subject is treated using this applicator 30, the surface of the water bag 33 is brought into contact with the surface of the subject. In this state, by applying a high voltage to the piezo element 32, a shock wave (strong ultrasonic wave) is emitted from the piezo element 32 to the subject. The emitted shock wave is focused on the geometric focus of the piezo element 32. Therefore, if the treatment site such as a calculus is positioned at the focal point, the shock wave is applied to the treatment site, and, for example, crush treatment is performed.

By the way, as described above, in the piezo-type shock wave treatment device, a high voltage is applied to the piezo element 32 portion, and water 38, which is a low-insulating acoustic propagation medium, exists near the piezo element 32. Therefore, it is important to maintain the insulating property of the piezo element 32. By providing the acoustic matching layer 39, the piezoelectric element 32
Avoid direct contact between the piezo element 32 and the water 39.
It is also supposed to maintain the insulating properties of.

[0008]

However, in the conventional piezo-type shock wave treatment device, when the water 38, which is the acoustic propagation medium, is directly enclosed in the applicator 30 for a very long period of time, the acoustic matching layer 39 absorbs water. There was a possibility to do. When the acoustic matching layer 39 absorbs water, (1) the acoustic matching layer 3
9 changes the acoustic characteristics, (2) the adhesion between the acoustic matching layer 39 and the piezo element 32 deteriorates, (3) the acoustic matching layer 39
However, there was a problem that the insulation property was deteriorated. This deterioration in the performance of the acoustic matching layer 39 also causes a decrease in the withstand voltage of the piezo element 32, so it was necessary to avoid continuously filling water in the applicator 30 for a long time.

Therefore, as described in Japanese Patent Laid-Open No. 04-227247, by forming a hydrophobic (water-repellent) fluororesin layer on the acoustic matching layer 39, the water absorption of the acoustic matching layer 39 is prevented. Known to prevent. However, when the fluororesin layer is applied to the surface of the acoustic matching layer 39, as shown in FIG. 7, air bubbles 42 may be mixed between the acoustic matching layer 39 and the fluororesin layer 41. When the air bubbles are mixed, the sound wave generated by the piezo element 32 is hard to be transmitted to the propagation medium, and the acoustic characteristic is deteriorated.

The present invention has been made in view of the above-mentioned circumstances, and shock wave treatment is performed by simply and effectively performing a water absorption preventing treatment of an acoustic matching layer for enhancing waterproofness of a shock wave generating source such as a piezo element. The purpose is to improve the reliability of the device and extend its life.

[0011]

In order to achieve the above object, the shock wave treatment apparatus according to claim 1 generates a shock wave in a shock wave treatment apparatus for crushing and treating a treatment region of a subject with a shock wave of an ultrasonic pulse. A shock wave source, a shock wave matching layer formed on a shock wave emitting surface of the shock wave source, a shock wave propagating medium interposed between the shock wave matching layer and the subject for propagating the shock wave, and having elasticity. And at least a resin film formed on the surface of the shock wave matching layer on the shock wave propagation side.

Particularly, according to the shock wave therapy device of the second aspect, the resin film is waterproof.

Further, in particular, according to the shock wave therapy device of the third aspect, the resin film has flexibility.

Further, according to the shock wave treatment device of the fourth aspect, the resin film is a polypropylene sheet.

Further, according to the shock wave treatment device of the fifth aspect, the resin film forms a second shock wave matching layer.

Particularly, according to the shock wave treatment device of the sixth aspect, the acoustic propagation medium is interposed between the shock wave matching layer and the resin film.

Further, in particular, according to the shock wave therapy device of the seventh aspect, the acoustic propagation medium is oil and fat.

Further, according to the shock wave treatment device of the eighth aspect, the shock wave generation source has a substrate and a plurality of divided piezo elements provided on the substrate, and the resin film is the above-mentioned. It is arranged so as to include at least a part of the substrate or the piezoelectric element.

Further, according to the shock wave treatment device of the ninth aspect, the shock wave propagation medium is water.

According to the shock wave treatment apparatus of the tenth aspect, the shock wave propagation medium is enclosed by the bag-shaped resin film.

Further, according to the shock wave treatment device of the eleventh aspect, the resin film is provided between the shock wave matching layer and the shock wave propagation medium, and on at least a part of the substrate and the piezo element. And is integrally formed so as to enclose the shock wave propagation medium.

Furthermore, according to the shock wave treatment device of the twelfth aspect, holes are formed in substantially the central portions of the substrate, the piezo element, and the shock wave matching layer, and the bag-shaped resin is formed from the holes. An ultrasonic probe for imaging inserted into the membrane is further provided.

In particular, according to the shock wave treatment device of the thirteenth aspect, the bag-shaped resin film is formed in a floating ring shape having an insertion hole for inserting the ultrasonic probe in a substantially central portion thereof. There is.

Further, in particular, according to the shock wave treatment device of the fourteenth aspect, the end surface of the resin film is arranged in a non-contact portion of the shock wave propagation medium.

[0025]

According to the shock wave treatment device of the present invention, the shock wave propagation medium of the shock wave matching layer formed on at least the shock wave radiation surface of the piezo element which is a part of the shock wave generation source for generating the shock wave. For example, on the surface that comes in contact with water,
A polypropylene film, which is a resin film, is provided. Since this resin film is made of a material having elasticity and flexibility, and also having waterproofness (for example, polypropylene), the elasticity and flexibility make it easy to use the shock wave matching layer and water. Can be disposed between the two. Due to its waterproof property, it is possible to prevent contact between the shock wave source and the acoustic propagation medium such as water.

Due to its elasticity and flexibility, it is also possible to stretch the resin film provided between the shock wave matching layer and water to enclose the piezo element and its substrate. When the resin film is integrally formed between the water and the water, at least a part of the substrate and the piezo element, and the bag containing the water, the water in the bag is not in contact with all the components (clo).
sed), the corrosion of water is prevented and the trouble of exchanging water can be saved.

Furthermore, an ultrasonic probe for imaging an object is inserted from a hole formed in each of the substrate, the piezo element, and the shock wave matching layer substantially at the center thereof into a through hole at the center of the bag formed in the shape of a floating ring. Is inserted and placed, the inserted ultrasonic probe is completely blocked from the water in the water bag. Therefore, it is not necessary to waterproof the ultrasonic probe.

[0028]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

A first embodiment of the present invention will be described with reference to FIG. In FIG. 1, the shock wave treatment device includes an applicator 1 having a piezo element 1a that is a shock wave generation source, and a drive circuit 2 that drives the piezo element 1a.

The applicator 1 comprises a base 3 having an opening in the center. The base 3 is made of an insulating material having a thermal expansion coefficient close to that of the piezo element 1a and having a high mechanical strength, such as glass epoxy resin. The inner peripheral surface of the base 3 is formed in a concave shape, and a piezo element 1a formed of a ceramic plate or the like and having an opening at the center is fixed to the inner peripheral surface. The piezo element 1a is divided into a plurality of parts, and the ultrasonic wave emission surface (front surface) thereof is concave as a whole. Also, the piezo element 1
Electrodes (not shown) are formed on the front and rear surfaces of a, and these electrodes are connected to the drive circuit 2 via lead wires 4 and 5.

An acoustic matching layer 7 made of, for example, an epoxy resin is provided on the front and side surfaces of the piezo element 1a and a part of the inner peripheral surface of the base 3. A hole 8 is formed in the center of the acoustic matching layer 7. A substantially cylindrical ultrasonic probe support 9 is inserted into the hole 8. The ultrasonic probe support portion 9 has an air intake / exhaust port 1 for intake and exhaust of air into a water bag described later.
0 is formed.

A resin thin film (polypropylene sheet) 11 made of, for example, polypropylene is provided on the outer surface of the base 3, the outer peripheral surface of the acoustic matching layer 7, and the inner peripheral surface (inner peripheral surface of the hole 8). Has been done. That is, the piezo element 1a and the acoustic matching layer 7 are enclosed by the resin thin film 11.

The resin thin film 11 has elasticity, waterproofness, and flexibility, and its thickness is the same.
It is generated at an odd multiple of 1/4 of the center wavelength (denoted by λ) of the shock wave inside, for example, λ / 4 or 3λ / 4.
In addition, in the present specification, “having elasticity” means that the resin thin film 11 has sufficient physical strength to withstand the expansion and contraction of the resin thin film 11. Also, “having waterproofness” means that the resin thin film 11 has a characteristic that it hardly absorbs water or does not allow water to permeate even if it is left in contact with water for a long time. It means having. Also,
“Flexible” means that the resin thin film 11 has sufficient physical strength to withstand the bending of the resin thin film 11.

As the resin having elasticity, waterproofness, and flexibility as described above, there are polyethylene resin, polystyrene, and fluorine resin in addition to the polypropylene resin. All of these resins have a water absorption rate of 0.01% or less (weight increase due to water absorption during long-term water immersion), which is extremely small. Among these, polypropylene and high-density polyethylene are excellent in stretchability, and therefore, it is very desirable to use them as a sheet material. Further, polypropylene is suitable as a sheet material because it has excellent adhesiveness as compared with polyethylene, but polyethylene can also be used by performing an appropriate surface treatment.

A portion (inner peripheral portion) of the resin thin film 11 adjacent to the inner peripheral surface of the hole 8 of the acoustic matching layer 7 is in close contact with the ultrasonic probe supporting portion 9 via the O-ring 12a. Further, in a portion (outer peripheral portion) adjacent to the outer surface of the acoustic matching layer 7, an edge (bellows portion) 13 of the water bag 13 made of a flexible material such as rubber via the O-ring 12b.
It is attached in a state where a is closely attached. in this way,
The inner peripheral portion of the resin thin film 11 and the constituent elements adjacent to the inner peripheral portion, and the outer peripheral portion and the constituent elements adjacent to the outer peripheral portion are brought into close contact with each other through the O-rings 12a and 12b, whereby the applicator 1 The whole is airtight.

A tightening band 14 is attached to the outer side of the attaching portion of the bellows portion 13a, and by tightening the tightening band 14, the bellows portion 13a and the resin thin film 11 are in close contact with each other. This water bag 13
Further, water 15 as an acoustic propagation medium for propagating a shock wave (ultrasonic wave) is contained therein. That is, the acoustic matching layer 7 and the water 15 in the water bag 13 are not in contact with each other by the resin thin film 11 arranged on the inner peripheral surface of the acoustic matching layer 7. Further, the air intake / exhaust port 10 is in communication with the water 15 in the water bag 13, and the water 15 is sucked and deaerated from the air intake / exhaust port 10 by a pump or the like (not shown), and then again into the water bag 13. It is designed to be discharged.

The acoustic matching layer 7 is made of, for example, an epoxy resin, and its acoustic impedance is equal to that of the piezo element 1.
It is set to an intermediate value between that of a and that of the resin thin film 11 (acoustic impedance: piezo element 1a> acoustic matching layer 7> resin thin film 11). Therefore, the shock wave generated from the piezo element 1a is efficiently radiated forward. Further, if the acoustic impedance of the resin thin film 11 is set to an intermediate value between that of the acoustic matching layer 7 and that of the water 15, the resin thin film 11 does not prevent the propagation of shock waves.

On the other hand, the ultrasonic probe 16 is inserted and arranged in the water bag 13 in the ultrasonic probe supporting portion 9. The joint between the ultrasonic probe 16 and one opening of the ultrasonic probe support 9 is sealed with an oil seal. The ultrasonic probe 16 is waterproofed, and a sound propagation medium suction / exhaust port 17 for suctioning / discharging water, which is the sound propagation medium in the water bag 13, is provided at the tip portion thereof.

This ultrasonic probe 16 includes a piezoelectric element 1
It has a function of radiating an ultrasonic wave weaker than the ultrasonic wave generated by a toward the patient body and receiving a reflected wave from the patient body. This received signal is sent to an ultrasonic imaging device (not shown). The ultrasonic imaging apparatus is configured to display the received signal as a tomographic image (B mode image) on the monitor by subjecting it to luminance modulation. Therefore, the doctor can position the applicator 1 (positioning for focusing on the calculus) while viewing the tomographic image.

At the time of treatment, a water bag 13 on the side opposite to the base 3
The surface of the body is contacted with the surface of the patient's treatment site. In this state, the applicator 1 is positioned so that the focus of the piezo element 1a coincides with the treatment site (calculus) while observing the tomographic image obtained based on the above-described scanning of the ultrasonic probe 16. After the positioning of the applicator 1 is completed, the drive circuit 2
Are driven, and a high voltage pulse is applied to the piezo element 1a. By this application, a shock wave is generated from the front surface of the piezo element 1a. The generated shock wave is focused on the focal point, and the stones located at the focal point are fractured and treated.

By the way, assuming that the resonance frequency of the shock wave generated from the piezo element 1a is about 500 kHz, λ
Is about 2.8 mm. Therefore, the thickness of the resin thin film 11 is about 0.7 mm or 2.1 mm. The resin thin film 11 such as a polypropylene sheet is more efficient in processing such a uniform thickness than in the prior art.

Here, the procedure for disposing such a resin thin film 11 so as to enclose the piezo element 1a and the acoustic matching layer 7 will be described with reference to FIG.

As shown in FIG. 2, the acoustic matching layer 7 shown in FIG. 1 is formed on the base 3 on which the piezo element 1a is fixed in advance. Then, for example, a resin thin film 11 formed in a donut shape is applied from above the acoustic matching layer 7. Then, the resin thin film 11 is stretched by making use of its elasticity and is brought into close contact with the acoustic matching layer 7 (see FIG. 3). When a fluororesin layer is provided on the acoustic matching layer by conventional machining or coating, air (air bubbles) may be mixed between the acoustic matching layer and the fluororesin layer (see FIG. 7). Although this is one of the causes of lowering the acoustic characteristics, in the present embodiment, by stretching the resin thin film 11, air (air bubbles) existing between the acoustic matching layer 7 and the resin thin film 11 is pushed out. As a result, the adhesiveness is higher than in the conventional case, and the possibility that air (air bubbles) is mixed in is reduced.

A second acoustic propagation medium (a material that does not deteriorate the acoustic characteristics of the acoustic matching layer 7, such as oil and fat) is previously provided between the resin thin film 11 and the acoustic matching layer 7 in advance. It is also possible to enclose a small amount by applying to.

Further, as shown in FIG. 2, the extrusion of air between the acoustic matching layer 7 and the resin thin film 11 and the encapsulation of the second acoustic propagation medium are of the same type as the resin thin film 11 (may be the same).
The resin tube T is inserted into the resin thin film 11, the air contained in the resin thin film 11 is sucked by the vacuum pump P, and then the cock C is attached to an arbitrary portion of the tube T or the tube T is melted. As a result, the possibility of air inclusion can be further reduced, and since the resin thin film 11 can be easily peeled off by injecting air into the tube T, the piezo element 1a, the acoustic matching layer 7, etc. can be replaced. It can be done easily.

According to this structure, the acoustic matching layer 7 and the water bag 13
Since the resin thin film 11 disposed between the inner water 15 and the water 15 is waterproof, there is no concern that the acoustic matching layer 7 will absorb water,
There is no deterioration of performance that causes the life of the applicator 1, such as deterioration of insulation of the acoustic matching layer 7 and deterioration of adhesion between the acoustic matching layer 7 and the piezoelectric element 1a. Therefore, the durability and reliability of the applicator 1 are improved.

Further, as compared with the conventional type in which a fluorine resin layer is machined or applied to the surface of the acoustic matching layer, the resin thin film 11 can be easily processed to have a uniform thickness, so that the processing time can be shortened. It is possible to obtain the effect of eliminating the troublesomeness caused by the processing. Further, due to the elasticity of the resin thin film 11, the resin thin film 11 can be easily and surely brought into close contact with the surface of the acoustic matching layer 7 or the like. Reliability is further improved.

Further, according to this structure, the end portion of the resin thin film 11 can be arranged at the portion (on the side of the base 3) which does not come into contact with the water 15 which is the acoustic propagation medium, so that the water 15 is discharged from the end portion. The possibility of contamination is eliminated, and higher waterproof properties are obtained.

Further, the air inlet / outlet port 10 is connected to the resin thin film 1
Since it can be provided in the ultrasonic probe supporting portion 9 without making a hole in 1, the reliability regarding waterproofing is surely improved.

FIG. 4 shows a second embodiment of the present invention. In the shock wave treatment device shown in FIG. 4, the resin thin film 18 is arranged on the outer surface of the base 3, the outer peripheral surface and the inner peripheral surface of the acoustic matching layer 7, and the water bag 19 is also formed of the resin thin film 18. The other configurations are substantially the same as those in the first embodiment (note that in this embodiment, the outer surface of the ultrasonic probe support portion 9 is also covered with the resin thin film 18).

As shown in FIG. 4, the water bag 19 formed of this resin thin film may be integrally formed of the same resin thin film as the resin thin film arranged on the outer surface of the base 3 or the like. Alternatively, they may be individually formed and joined together.

In FIG. 5, the resin thin film and the water bag 1 disposed on the outer surface of the base 3, the outer peripheral surface of the acoustic matching layer 7, and the inner peripheral surface thereof.
The whole structure of the resin thin film 18 when the resin thin film which forms 9 is integrally formed is shown.

A water bag 19 formed of the resin thin film 18
Has a through hole 19a for inserting the ultrasonic probe 16 in the center, and is formed in a floating ring shape having a water insertion chamber 19b for inserting water inside, and a lower portion thereof bulges. And
The ultrasonic probe 16 is inserted and arranged in the insertion hole 19a. That is, the ultrasonic probe 16 has the insertion hole 19a.
Since it is inserted into the water bag 19, it is not in contact with the water 15 in the water bag 19. Therefore, it is not necessary to waterproof the ultrasonic probe 16, and the labor can be saved.

The water 15 in the water bag 19 is not in contact with the surrounding components such as the ultrasonic probe 16 and the acoustic matching layer 7. In other words, since the water 15 is “closed”, corrosion of the water 15 is prevented, and labor such as exchanging the water 15 can be saved. At this time, if it is necessary to increase or decrease the amount of water 15, the intake / exhaust port 10 may be provided at the position shown in FIGS. 4 and 5.

[0055]

As described above, according to the shock wave treatment device of the present invention, the stretchable and waterproof structure made of polypropylene sheet or the like is provided between the shock wave matching layer such as the acoustic matching layer and the shock wave propagating medium such as water. By providing the resin film having flexibility and flexibility, the water resistance is improved, and the shock wave treatment device can be used for a long period of time. In addition, even when the shock wave matching layer is used for a long period of time, performance deterioration such as deterioration of insulation properties of the shock wave matching layer does not occur, and thus safe treatment can be performed.

Since the resin film has elasticity,
It can be easily processed to have a uniform thickness and can be surely adhered to the surface of the shock wave matching layer without leaving bubbles or the like. Therefore, as compared with the conventional type in which a fluororesin layer is provided by machining or coating, for example, the processing time can be shortened, the shock wave propagation characteristics can be improved, and the reliability of the waterproof property can be further improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a shock wave therapy device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a process of disposing a resin thin film in an applicator of the shock wave treatment device in FIG.

FIG. 3 is a diagram showing a process of disposing a resin thin film in an applicator of the shock wave treatment device in FIG.

FIG. 4 is a sectional view showing a schematic configuration of a shock wave treatment device according to a second embodiment of the present invention.

5 is a diagram showing a resin thin film having an integral structure in FIG.

FIG. 6 is a sectional view showing a schematic configuration of a conventional shock wave treatment device.

FIG. 7 is a view showing bubbles mixed between an acoustic matching layer and a fluororesin layer.

[Explanation of symbols]

 1 Applicator 1a Piezo element 2 Driving circuit 7 Acoustic matching layer 8 Hole 9 Ultrasonic probe support 10 Air intake / exhaust port 11 Resin thin film 13 Water bag 15 Water 16 Ultrasonic probe 18 Resin thin film 19 Water bag 19a Insertion hole 19b Water insertion Room

Claims (14)

[Claims] 1. A shock wave treatment device for crushing and treating a treatment region of a subject with a shock wave of an ultrasonic pulse, comprising: a shock wave source for generating a shock wave; and a shock wave matching layer formed on a shock wave emitting surface of the shock wave source. A shock wave propagating medium interposed between the shock wave matching layer and the subject for propagating the shock wave, and a resin film having elasticity and formed on at least the shock wave matching side surface of the shock wave matching layer. A shock wave treatment device comprising: 2. The shock wave treatment device according to claim 1, wherein the resin film is waterproof. 3. The shock wave treatment device according to claim 1, wherein the resin film has flexibility. 4. The shock wave treatment device according to claim 1, wherein the resin film is a polypropylene sheet. 5. The shock wave treatment device according to claim 1, wherein the resin film forms a second shock wave matching layer. 6. The shock wave treatment device according to claim 1, wherein an acoustic propagation medium is interposed between the shock wave matching layer and the resin film. 7. The shock wave treatment device according to claim 6, wherein the acoustic propagation medium is oil and fat. 8. The shock wave generation source has a substrate and a plurality of divided piezo elements provided on the substrate, and the resin film includes at least a part of the substrate or the piezo element. The shock wave treatment device according to any one of claims 1 to 7, which is disposed in the. 9. The shock wave propagating medium is water.
The shock wave treatment device according to any one of claims 1 to 8. 10. The shock wave treatment device according to claim 1, wherein the shock wave propagation medium is enclosed by the bag-shaped resin film. 11. The resin film is disposed between the shock wave matching layer and the shock wave propagating medium, at least a part of the substrate and the piezo element, and integrally formed so as to enclose the shock wave propagating medium. The shock wave treatment device according to claim 8. 12. An ultrasonic probe for imaging, wherein a hole is formed in substantially the center of each of the substrate, the piezo element, and the shock wave matching layer, and the hole is inserted into the bag-shaped resin film from the ultrasonic probe for imaging. The shock wave treatment device according to claim 10, further comprising: 13. The shock wave treatment device according to claim 12, wherein the bag-shaped resin film is formed in a floating ring shape having an insertion hole for inserting the ultrasonic probe in a substantially central portion thereof. 14. The shock wave treatment device according to claim 1, wherein an end surface of the resin film is arranged in a non-contact portion of the shock wave propagation medium.