JPH066807Y2 - Ultrasonic therapy equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to improvement of an ultrasonic therapeutic apparatus for treating a diseased part by ultrasonic vibration.

[Prior Art] Japanese Patent Application No. 60-1201, Japanese Patent Application No. 60-21051 are known as ultrasonic treatment devices that perform treatment using ultrasonic vibration.
The structure shown in No. 0 and the like is used.

That is, in the ultrasonic treatment device, a probe (corresponding to an oscillation rod) that is configured by a pipe and can be inserted into a living body is connected to the tip of the horn, and the horn is connected to an ultrasonic transducer (ultrasonic vibration generator). Connected structures are used. And
The ultrasonic transducer is driven at a drive frequency that defines the tip of the probe on the belly, and this causes the tip of the probe to generate vibration necessary for treatment.

When using it, the tip of the probe is pressed against the affected area using an endoscope, etc., and ultrasonic vibration is applied to the tissue to excise or destroy the affected area (such as the stone). It was.

By the way, in the conventional ultrasonic treatment apparatus, only a probe made of a pipe whose diameter does not change is provided, and this probe is detachably connected to the tip of the horn in consideration of the damage. Then, when the probe is damaged, a new probe (which is the same as the damaged probe) prepared each time is attached.

[Problems to be Solved by the Invention] By the way, the mode of the affected area is, for example, a tissue in which blood vessels are densely gathered such as the liver or renal storage, or a hard stone, or otherwise soft, or a deep affected area. There are various cases such as shallow cases. And, in such a variety of affected areas, conventionally, only a single type of probe is pressed against various affected areas for ultrasonic treatment, so that the vibration characteristics and shape of this probe do not match the affected area. , In which case the therapeutic effect was poor.

The present invention has been made in view of the above problems, and an object thereof is to obtain an ultrasonic treatment apparatus capable of improving the therapeutic effect, facilitating the processing of the probe, and improving the durability.

[Means for Solving the Problems] In order to achieve the above-mentioned object, an ultrasonic treatment apparatus of the present invention is provided with an ultrasonic vibration generating section 2 and a mounting section 1 which is connected to the ultrasonic vibration generating section 2 and which is attached to the tip.
Horn 3 having 0, and an attached portion 1 which is attachable to and detachable from the attaching portion 10 of the horn 3.
2. A plurality of types of oscillations formed by a substantially conical base portion 11a having 2 and a probe 11b fixed to the front end side of the base portion 11a, the Young's modulus and the tip shape of the probe 11b being different from each other. It is characterized by comprising a rod 11 and an oscillating rod 11 selected from the plurality of types of oscillating rods 11 and being exchangeably connected to the horn 3.

[Operation] In this ultrasonic therapeutic apparatus, a plurality of types of oscillation rods 11 having different Young's modulus, tip shape, etc. are prepared in advance. Since the attached parts 12 of the oscillator rods 11 have the same structure, they can be detachably attached to the attaching part 10 of the same horn 3. Therefore, according to the affected area to be subjected to ultrasonic treatment, an arbitrary oscillation rod 11 having a vibration characteristic, a shape and the like suitable for it is selected from a plurality of types of oscillation rods 11 and attached to the horn 3. Can perform ultrasonic therapy. The oscillating rod 11 can be attached to and detached from the horn 3, and the base portion 1 having a substantially conical shape is formed.
1a and the probe 11b fixed to the tip side thereof, the horn 3 is used when a long oscillation rod is used.
The point that a sufficient amplitude cannot be obtained only by itself can be improved by further connecting the horn 3 with the substantially conical base portion 11a. Further, a substantially conical base 11a is connected to the horn 3, and the base 11a is not connected to the horn 3 but to the probe 1
It is fixed to the 1b side, in other words, the oscillation rod 1
Since the attached portion 12 for making the device 1 detachable is provided not on the probe 11b but on the substantially conical base portion 11a, the attached portion such as a screw is attached to the probe 11b having a small diameter and a relatively thin wall thickness. By eliminating the need for providing 12, the probe 11b can be easily processed and has durability.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 shows the whole ultrasonic treatment apparatus,
Reference numeral 1 is a gripping portion, 2 is an ultrasonic transducer as an ultrasonic vibration generating portion built in an outer case 1a constituting the gripping portion 1, 3
Is a substantially conical horn arranged on the tip side of the outer case 1a. The ultrasonic transducer 2 includes a plurality of piezoelectric elements 4
And a plurality of electrode plates 5 are alternately arranged, and these are arranged in a horn 3
A Langevin type is used in which the front metal block 6 and the rear metal block 7 which are integrated with each other are sandwiched. The sandwiching is performed by a nut 9 screwed to a pipe-shaped bolt 8 that penetrates the central portion of the ultrasonic transducer 2.

The front metal block 6 and the horn 3 are integrally connected. A screw hole 10 as a mounting portion is formed at the tip of the horn 3. The screw hole 10 is opened in the tip surface of the horn 3. Further, a pipe-shaped oscillation rod 11 is exchangeably connected to the tip of the horn 3. The oscillation rod 11 is, for example, a base portion 11a having a substantially conical shape.
And the probe 1 welded and fixed to the tip of the base 11a.
1b and.

The oscillating rod 11 attached to the horn 3 is arbitrarily selected from a plurality of types (see, for example, FIGS. 2 to 5) in which at least one condition such as Young's modulus, transformation ratio, or tip shape is different. A threaded portion 12 as an attached portion is formed at the rear end of each oscillation rod 11. Each oscillation rod 1
The screw parts 12 of No. 1 have the same structure, and are attachable to and detachable from the screw hole 10. Therefore, the oscillation rod 11 is connected to the tip of the horn 3 by screwing the screw portion 12 into the screw hole 10. The Young's modulus is the above probe 11b.
Can be set arbitrarily by selecting the constituent materials of
The transformation ratio (that is, the thickness ratio between the incident side and the emitting side of the base portion 11a) is arbitrarily set by selecting the end surface diameter of the base portion 11b.

The oscillator rod 11 shown in FIG. 2 is formed to have the same Young's modulus and a large metamorphic ratio by using, for example, a titanium alloy, and is formed to have the same diameter as that of each portion of the probe 11b, so that a soft affected portion can be obtained. It is suitable for treatment.
As a result, the contact area of the tip of the probe 11b with the affected area is increased to increase the amount of cutting at one time. Further, the oscillation rod 11 shown in FIG. 3 is similar to that of FIG. 2, but the probe 11b has a shape in which the tip thereof is cut off obliquely, whereby the probe 11b is formed.
Is made to easily enter the living tissue. The oscillation rod 11 shown in FIG. 4 uses, for example, stainless steel to increase the Young's modulus and decrease the transformation ratio, and
The probe 11b is formed in a tapered shape, and is suitable for a case where a blood vessel such as a liver or a kidney is densely gathered or a diseased portion such as a stone is hard. Thereby, the vibration of the tip of the probe 11b is applied to one point of the affected area, and the probe 11b is easily inserted into the living tissue to prevent damage to the blood vessel and to suck the tissue in the mesh of the blood vessel. It is made easier. It should be noted that the above FIGS.
The oscillation rod 11 shown in the figure has a short effective length.
However, the oscillation rod 11 shown in FIG. 5 belongs to the oscillation rod 11 having a long effective length. Oscillation rod 1 shown in FIG.
In the case of 1, the probe 11b is formed longer by (1 × integer) / 2 wavelengths than the short oscillation rod 11, and the oscillation rod 11 having such a long effective length is also shown in FIGS. Of course, such a tip shape can be adopted.

Further, in the center of the horn 3, there is provided a passage 13 whose front end communicates with the lumen of the oscillation rod 11 and whose rear end communicates with the lumen of the bolt 8. I am configuring. Then, a suction pump (not shown) is connected to the suction port body 14 serving as the rear end portion of the suction passage via a suction tube 15 so that suction can be performed from the tip opening of the oscillation rod 11. The electrode plate 5 is connected to the cable 16
Is connected to a power source device (not shown) for driving the ultrasonic transducer 2 via the probe 11b.
It is designed to oscillate an oscillation frequency that vibrates at the maximum amplitude with the tip antinode.

When treating an affected area using such an ultrasonic treatment apparatus, first, an arbitrary oscillation rod 11 is selected from among a plurality of types of oscillation rods 11 prepared in advance. This selection is made according to the affected area (the target position in the living body), for example, a living tissue in which blood vessels are densely gathered such as a liver or a renal storage, or a living tissue with many fibers,
Or when treating a hard affected area such as a stone,
The oscillation rod 11 shown in the figure is selected. When treating a soft affected area, the oscillator rod 1 shown in FIG. 2 or 3 is used.
Select 1. Moreover, at this time, a probe having a probe 11b having a length corresponding to the depth of the affected area is selected. Then, the selected oscillation rod 11 is attached by screwing its threaded portion 12 into the screw hole 8 of the cone 3.

The grasping portion 1 in which the desired oscillation rod 11 has been exchanged as described above is inserted into the affected area using, for example, an endoscope or a sheath (not shown). Then, the tip of the probe 11b of the oscillation rod 11 is pressed against the target affected part. Then, the ultrasonic oscillator 2 is driven to oscillate the oscillation frequency. Then, ultrasonic vibrations whose tip is antinode as shown by the curve in FIG. 1 are transmitted to the oscillation rod 11 through the cone 3. Therefore, the affected part is excised (or destroyed) with the amplitude of the ultrasonic vibration applied to the tip of the probe 11b.

Therefore, when the oscillating rod 11 shown in FIG. 4 is selected, a large amount of force is applied to the sharp tip of the oscillating rod 11 so that stones or the like can be effectively destroyed (or excised), and FIGS. When the oscillating rod 11 shown in (1) is selected, the contact area with the affected area is large, and ultrasonic vibration can be efficiently transmitted from the probe 11b to the affected area to efficiently excise the biological tissue. The excised tissue or the like is discharged to the outside of the living body through the suction passage by the suction force of the suction pump that operates corresponding to the operation of the ultrasonic transducer 2.

As described above, since the grasping portion 1 is used as a common component and various kinds of oscillating rods 11 can be appropriately exchanged for ultrasonic treatment of an affected area, ultrasonic treatment can be performed using the oscillating rod 11 suitable for the affected area. It can be carried out and its therapeutic effect can be improved. Further, since the grip 1 is a common component for various oscillation rods 11,
The grip 1 and the oscillation rod 1 corresponding to various affected areas
It is not necessary to prepare many combinations with 1. Further, in this ultrasonic treatment device, the oscillation rod 11 is made detachable with respect to the horn 3, and a substantially conical base 11a is provided.
And a probe 11b fixed to the tip side thereof. This is because a substantially conical base portion 11a is further connected to the horn 3 because a sufficient oscillation cannot be obtained only by the horn 3 when a long oscillating rod is used. You can Further, the substantially conical base portion 11a is fixed to the probe 11b side, not to the horn 3. In other words, the screw portion 12 for detachably attaching the oscillation rod 11 is not provided on the probe 11b. Instead, it is provided on the base portion 11a having a substantially conical shape. As a result, it is possible to eliminate the need to provide the threaded portion 12 on the probe 11b having a small diameter and a relatively small wall thickness, so that the probe 11b can be easily processed and has durability.

Further, in this embodiment, since the base portion 11a of the oscillation rod 11 is tapered, the base portion 11a can perform the same action as the action of enlarging the amplitude of the ultrasonic vibration in the horn 3. By such multi-stage amplitude expanding action, the transformation ratio of the entire device can be increased. As a result, it is not necessary to increase the diameter of the horn 3 as compared with the case where the required amplitude is obtained only by the horn 3, and in the end, the grip portion 1 can be reduced in diameter, easy to hold, and its operability is improved. You can

However, this invention is not limited to the above-described embodiment, but as shown in FIG. 6, the oscillation rod 11 is formed only by the probe, and the screw portion 12 at the rear end is detachably connected to the screw hole 10 of the horn 3. May be.

Further, in this invention, the oscillator 11 is provided at the tip of the cone 3.
The detachable structure is such that as long as the attached portion 10 is provided at the tip of the cone 3 and the attaching portion 12 is provided at the rear end of the oscillation rod 11, these two portions are attached with detachable screws or nuts. They may be connected and may have any other structure.

In the above-described embodiment, as shown in FIG. 7 or FIG. 8, the electrode strip 21 to which the cable 16 is connected is attached to the inner surface of the outer case 1a, and the ultrasonic transducer 2
The electrode plate 5 may be bent to form a hook-shaped elastic contact portion 5a, and the contact portion 5a may be elastically brought into contact with the electrode strip 21 to electrically connect them. . Then, in this case, the outer case 1a
By inserting the ultrasonic vibrator 2 and the horn 3 into the inside, the electrode strip 21 is elastically deformed while the elastic contact portion 5a is elastically deformed.
Can be elastically contacted with each electrode plate 5 and the cable 1.
Not only can the labor for individually soldering 6 and 6 be omitted, but the assembly can be performed easily.

[Advantages of the Invention] As described above, according to the present invention, the oscillation rod is detachable from the horn, and is composed of a substantially conical base and a probe fixed to the tip side thereof. When a long oscillating rod is used, the point that a horn alone cannot obtain a sufficient amplitude can be improved by further connecting a substantially conical base to the horn. Further, since the attached part for making the oscillator rod detachable is provided not on the probe but on the substantially conical base, the attached part such as a screw is attached to the probe having a small diameter and a relatively thin wall thickness. It is possible to make the probe easy and durable without the need to provide it. Moreover, since various oscillating rods can be appropriately exchanged for the horn, ultrasonic treatment of the affected area can be performed,
Ultrasonic treatment can be performed using an oscillation rod suitable for the affected area, and the therapeutic effect can be improved.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.
The figure shows a cross section of an ultrasonic treatment apparatus together with the waveform of ultrasonic vibration during ultrasonic treatment, FIGS. 2 to 5 are cross-sectional views showing different oscillator rods, and FIG. 6 is another embodiment of the oscillator rod. FIG. 7 is a partial cross-sectional view of an ultrasonic therapeutic apparatus showing a mode, and FIGS. 7 and 8 are partial sectional views of an ultrasonic therapeutic apparatus showing still another different embodiment. 2 ... Ultrasonic vibrator (ultrasonic vibration generator), 3 ... Horn, 10 ... Screw hole (mounting part), 11 ... Oscillation rod, 1
1a ... base part, 11b ... probe, 12 ... screw part (attached part).

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shoichi Gotanda 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Tomohisa Sakurai 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Toshihiko Suzuta 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Hitoshi Karasawa 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 In Olympus Optical Co., Ltd. (72) Yuichi Ikeda 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. 2 In Olympus Optical Co., Ltd. (72) Yuaki Kagawa 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Creator Eiichi Fuse 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olin Scan Optical Industry Co., Ltd. in the (72) inventor Tadao Hagino Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus Optical Industry Co., Ltd. in

Claims (1)

[Scope of utility model registration request] 1. A substantially conical shape having an ultrasonic vibration generating portion, a horn connected to the ultrasonic vibration generating portion and having a mounting portion at a tip end thereof, and a detachable mounted portion at the mounting portion of the horn. And a plurality of types of oscillating rods formed by differentiating the Young's modulus and tip shape of the probe, and a probe fixed to the tip side of the base. An ultrasonic treatment device, wherein an arbitrary oscillation rod selected from the rods is exchangeably connected to the horn.