JPH04180749A - Ultrasonic treating device - Google Patents

Abstract

PURPOSE:To reduce the vibration attenuation even if an ultrasonic vibration transfer member is curved, and to improve the safety by forming the ultrasonic vibration transfer member for transferring ultrasonic vibration to the part to be processed by an ultraelastic alloy. CONSTITUTION:In the inside of a hand piece 1, an ultrasonic vibrator 2 is contained, and in a horn 3 of this ultrasonic vibrator 2, a screw part 4 is provided, and to this screw part 4, a connecting member 5 is screwed in and fixed. Also, to this connecting member 5, a probe 6 being an ultrasonic vibration transfer member is connected by brazing or adhesion, and this probe 6 is formed by a wire of an ultraelastic alloy of, for instance, a Ti-Ni alloy, etc. Accordingly, ultrasonic vibration generated by the ultrasonic vibrator 2 is transferred efficiently to the probe 6 and its tip vibrates. In such a way, as for the ultrasonic vibration transfer member 6, the curvature capacity is also small, and its insertion into a body-cavity can also be executed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to an ultrasonic treatment device that uses ultrasonic vibrations to incise or emulsify living tissue or to crush stones.

[Prior Art] An ultrasonic treatment device that uses ultrasonic vibrations to incise or emulsify living tissue or crush stones consists of a hand piece with a built-in ultrasonic transducer and a hand piece attached to the hunt piece. It consists of a probe that excites the ultrasonic transducer and a drive device that excites the ultrasonic transducer.

This type of ultrasonic treatment device is able to preserve relatively elastic tissue such as blood vessels and nerve tissue without being removed, and can remove other parenchymal tissue, so it can be used in liver surgeries with many blood vessels and brain surgeries with lots of nerves. In addition to being used in all kinds of surgical procedures, it is also beginning to be applied to endoscopic procedures, which are becoming more and more popular due to their minimally invasive nature.

By the way, the ultrasonic treatment device is disclosed in Japanese Patent Application Laid-open No. 6.1-2, for example.
As is known from Japanese Patent Publication No. 72045, Japanese Patent Laid-Open No. 62-164445, etc., a flexible wire is used as an ultrasonic vibration transmission member that transmits ultrasonic vibrations generated from an ultrasonic transducer to a treated area. The shaped transmitter is made of a metal material such as stainless steel, duralumin, or titanium alloy.

[Problems to be Solved by the Invention] However, in conventional ultrasonic treatment devices, the ultrasonic vibration transmission member that transmits ultrasonic vibrations to the treated area is made of a metal material such as stainless steel, duralumin, or titanium alloy. . However, the flexible linear transmitter as an ultrasonic vibration transmitting member may be damaged by ultrasonic vibration1-
In addition, if the linear transmitter is curved for insertion into a body cavity, it is likely to be damaged by ultrasonic vibration, and the ultrasonic vibration will be attenuated, making it less effective for treatment. was there.

This invention was made in view of the above-mentioned circumstances, and its purpose is to provide an ultrasonic treatment device that has little vibration attenuation even when the ultrasonic vibration transmitting member is curved, and is less likely to be damaged and is highly safe. It is about providing.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides an ultrasonic vibrator and an ultrasonic vibration transmission member that transmits the ultrasonic vibrations generated by the ultrasonic vibrator to a treated area. The ultrasonic vibration transmission member of the ultrasonic treatment apparatus is formed of a superelastic alloy.

[Operation] The ultrasonic vibrations generated by the ultrasonic vibrator are efficiently transmitted to the ultrasonic vibration transmission member formed of a superelastic alloy, and the tip of the ultrasonic vibration transmission member vibrates. By pressing this tip against the treated area, the treated area can be subjected to ultrasonic treatment. Further, the ultrasonic vibration transmission member formed of a superelastic alloy has a small amount of bending force and can be easily inserted into a body cavity.

[Example code] Hereinafter, each embodiment of the present invention will be described based on the drawings.

1 and 2 show a first embodiment, in which a hand piece 1 has an ultrasonic transducer 2 built therein. A screw portion 4 is provided on the horn 3 of the ultrasonic vibrator 2, and a connecting member 5 is screwed into the screw portion 4 and fixed thereto. A probe 6 as an ultrasonic vibration transmitting member is connected to this connecting member 5 by brazing or bonding.

The probe 6 is formed of a wire made of a superelastic alloy such as a Ti-Ni alloy.

The ultrasonic transducer 2 is covered with a cover 7,
A flexible sheath 8 made of Teflon and covering the probe 6 is connected to the cover 7. moreover,
A gap 9 for feeding a coolant is formed between the probe 6 and the sheath 8, and this gap 9 communicates with a coolant supply mouthpiece 10 provided on the cover 7. Also,
An electric cord 11 connected to the ultrasonic transducer 2 is connected to the rear end of the cover 7, and this electric cord 11 is connected to a drive device 12 via a connector 13. Also,
A foot switch 14 is connected to this drive device 12,
The ultrasound transducer 2 can be turned on and off by the operator operating the foot switch 14.

According to the ultrasonic treatment apparatus configured in this way, the ultrasonic vibrations generated by the ultrasonic transducer 2 are transmitted to the probe 6, and the tip thereof vibrates. Therefore, by pressing the tip of the probe 6 against the calculus 15, the calculus can be crushed by ultrasonic vibration. At this time, when cooling liquid is supplied from the cooling liquid supply source through the cooling liquid supply mouthpiece 10, the cooling liquid is guided to the tip of the probe 6 through the gap 9, and the cooling liquid is guided to the tip of the probe 6 through the gap 9.
and can cool the treatment area.

Further, when the probe 6 is inserted into the body cavity together with the sheath 8, the probe 6 is bent, but since the probe 6 is formed of a superelastic alloy, the bending resistance is small, so the probe 6 is easily bent and inserted. . Furthermore, since the probe 6 made of a superelastic alloy has little attenuation of ultrasonic vibrations even when curved, it is also effective in treating deep areas with curved lumens, such as gallstones and kidney stones.

FIG. 3 shows a second embodiment, in which a probe 16 made of a pipe made of a superelastic alloy such as Ti--Ni alloy is connected to the horn 3 of the ultrasonic transducer 2. The inner cavity of the probe 16 is formed as a suction path, and this suction path passes through the central axis of the ultrasonic transducer 2 and communicates with a suction cap 17 at the rear end.
It communicates with a suction pump (not shown) via.

Further, the gap 9 between the probe 16 and the sheath 8 is formed as a passage for feeding cooling water, as in the first embodiment.
Cooling water can be sucked from the tip of the probe 16 while being fed.

Therefore, the ultrasonic vibrations generated by the ultrasonic transducer 2 are transmitted to the probe 16, causing its tip to vibrate. Therefore, by pressing the tip of the probe 16 against the liver 19, a tumor can be excised or a stone can be crushed by ultrasonic vibration. At this time, from the coolant supply source to the coolant supply cap 1.
When the cooling liquid is supplied through the gap 9, the cooling liquid is guided to the tip of the probe 16 through the gap 9, and can cool the probe 16 and the treatment section. Additionally, excised tissue and crushed stones can be aspirated via the suction channel.

FIG. 4 shows a third embodiment, which is an embodiment adopted in a neurosurgical suction device used during neurosurgical microscopic surgery. The suction operation section 19 is provided with a suction path 2o.
The proximal end of a bent suction tube 21 is connected to one end of the suction tube 21 . Further, a suction mouthpiece 22 is provided at the other end of the suction path 20, and this suction mouthpiece 22 communicates with a suction pump (not shown) via a tube 23. Furthermore, one suction operation part is provided with a leak hole 24 communicating with the atmosphere,
The suction force can be adjusted by opening and closing the leak hole 24 with fingers.

Furthermore, the suction operation unit 19 is provided with an ultrasonic transducer 25 made of giant magnetostrictive material, and an excitation coil 26 is provided on the outer periphery of the ultrasonic transducer 25.
is wrapped. For example, the ultrasonic transducer 25 is made of Ti-
A wire 27 made of a superelastic alloy such as a Ni alloy is connected, and this wire 27 is inserted into the suction tube 21, and its tip is guided to the tip of the suction tube 2]. An oscillation circuit 28 is also connected to the excitation coil 26, and when an alternating current flows through the excitation coil 26, the giant magnetostrictive material is placed in an alternating magnetic field, causing ultrasonic vibration, and this ultrasonic vibration is transmitted to the wire 27. be done.

Therefore, the suction tube 21 through which the wire 27 is inserted is inserted into the patient 2.
9 until it comes into contact with the affected area 30 such as a brain tumor or cerebral hematoma, and while monitoring the affected area 30 with the surgical microscope 31,
When an alternating current is passed from the oscillation circuit 28 to the excitation coil 26, the giant magnetostrictive material is exposed to an alternating magnetic field, causing ultrasonic vibration. This ultrasonic vibration is transmitted to the wire 27, and the suction tube 21
The wire 27 vibrates ultrasonically inside. Therefore, even if the suction tube 21 is clogged with tissue, hematoma, etc. excised during suction by the suction tube 21, it can be easily removed by the ultrasonic vibration of the wire 27, and the suction efficiency can be increased.

5 and 6(a) and 6(b) show an ultrasonic probe 32 having an incision function, in which an incision blade 34 is provided at a part of the probe tip 33. By using this ultrasonic probe 32, as shown in FIG. 6(a), the capsule 35a of the liver 35 is incised with the incision blade 34, and from the incision 35b, as shown in FIG. It becomes possible to crush and suction the parenchymal tissue 35c by ultrasonic vibration. In this case, there is an advantage that there is less bleeding because only the coating 35a can be incised.

The probe shown in FIG. 7 is constructed for the same purpose as described above, and is provided with a cutting blade 37 projecting from the side wall of the probe tip 36.

FIG. 8 shows an ultrasonic probe 38 with a water supply function, and three are sheaths. An inner chamfer 41 is formed on the probe tip surface 40 .

Therefore, the water supply liquid sent from the water supply channel 42 is dispersed in the axial direction by the inner chamfered portion 41, and the water supply liquid can be efficiently sent to the affected area, and the field of vision is not obstructed, allowing a smooth operation.

The probe shown in FIG. 9 is constructed for the same purpose as described above, and an R-chamfered portion 43 is provided on the tip end surface 40 of the probe. Therefore, the water supply liquid sent from the water supply channel 42 is gently dispersed forward by the R-chamfered portion 43.

[Effects of the Invention] As explained above, in the present invention, the ultrasonic vibration transmission member that transmits the ultrasonic vibrations generated by the ultrasonic vibrator to the treated area is made of a superelastic alloy, and therefore the ultrasonic vibration transmission member is made of a superelastic alloy. Even when the member is curved, there is little vibration damping and the amount of force needed to bend it is small, so it has the effect of easily crushing stones and resecting and suctioning tumors even in complex-shaped organs.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 show one embodiment of the present invention.
2 is a perspective view of an ultrasonic treatment device; FIG. 3 is a perspective view of an ultrasonic treatment device showing a second embodiment of the present invention; a longitudinal side view showing a wave probe. Figures 6(a) and 9(b) are explanatory diagrams showing how the probe is used, Figure 7 is a side view showing the ultrasonic probe also having an incision function, and Figures 8 and 9 are water supply functions. FIG. 3 is a longitudinal side view showing an ultrasound probe with 2... Ultrasonic transducer, 6... Probe (ultrasonic vibration transmission member). Applicant's agent Patent attorney Atsushi Tsuboi 5c Figure 7

Claims (1)

[Claims] In an ultrasonic treatment device comprising an ultrasonic vibrator and an ultrasonic vibration transmission member that transmits ultrasonic vibrations generated by the ultrasonic vibrator to a treated part, the ultrasonic vibration transmission member is made of a superelastic alloy. An ultrasonic treatment device characterized by: