JP3390034B2 - Ultrasound surgical handpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention is applicable to ultrasonic scalpels and the like.
To an ultrasonic surgical handpiece. [0002] 2. Description of the Related Art Generally, an ultrasonic wave is applied to unnecessary diseased tissue sites.
An ultrasonic scalpel that concentrates energy and subdivides the tissue
Are known. Ultrasonic therapy equipment such as this ultrasonic scalpel
For the ultrasonic handpiece, the case
An ultrasonic vibrator serving as an oscillation source is disposed in the ring.
This vibrator includes a magnetostrictive type and an electrostrictive type. Electrostrictive vibration
The element is distorted when voltage is applied.
The conversion efficiency is higher than that of the magnetostrictive type. [0003] Also, ultrasonic scalpels are generally bolted to
Electrostrictive transducers called Langevin transducers are used
ing. This is because the vibration element and the electrode are integrated with bolts
It is of a tightening type. And this ultrasonic vibration
Lead wires are used for the power supply electrodes provided on the vibrating element of the rotor.
Connected to an external power supply via this lead wire.
Has been continued. By the way, electrodes and lead wires of an ultrasonic vibrator
For example, connection with a device such as Japanese Patent Application No. 4-113498 is made.
Such as soldering type and Japanese Patent Application No. Hei 3-187795.
There are also crimping types. All of these connections are
After connecting the poles and lead wires,
Lead to avoid continuity with the
Insulation part such as wire covering material or heat shrink tubing
It is configured so that the material is brought into close contact with the conductor and insulated.
You. [0005] SUMMARY OF THE INVENTION During operation of an ultrasonic transducer
The ultrasonic vibration generated in the transducer is transmitted to the electrode side
From the connection with the lead wire to the core wire side of the lead wire.
Wrong. At this time, the lead wire had a certain length
If there is sufficient elasticity, the ultrasonic vibration
Will be absorbed. However, the electrode or the electrode near the electrode is
Since the lead wire is vibrating, the supersonic
Connect the connection between the electrode of the wave oscillator and the lead wire
Cover member or heat-shrinkable tube or other insulating member
If insulated by close contact, the connection between the electrode and the lead wire
Friction between connection and insulation or heat shrink tubing
Heat is generated. In particular, heat shrink tubing is used for electrodes and leads
Due to the strong contact with the wire, greater frictional heat is generated. This frictional heat only melts the insulating material itself.
Not lead wire breakage or handpiece body
Is transmitted to the casing and the casing is heated to a high temperature.
Therefore, there is a problem that the operator is burned. The present invention has been made by paying attention to the above circumstances.
The purpose is to use the frictional heat during the operation of the ultrasonic vibrator.
Fever-free, safe and reliable ultrasonic surgical handpiece
To provide the source. [0009] SUMMARY OF THE INVENTION The present invention relates to a handpiece book.
In the casing of the bodyAn ultrasonic vibrator arranged, The super
A vibrating element for generating vibration of the acoustic vibrator; The vibration element
An electrode for voltage supply for applying voltage to the Contact the electrode part
Connected to the end of the vibrating element.
An uncoated core wire to Due to the vibration of the vibration element
Attenuates the vibration of the core wire to which the generated vibration is transmitted
Cover the vibration damping part of the core wire in a non-contact manner
Together with an insulating member fixed to the core wire, Consisting of
Sonic surgery handpieceIt is. [0010] [Action]According to the present invention, an electrode of an ultrasonic transducer and this electrode
The conductor consisting of the conductive material of the lead wire connected to
The edge member is separated from the conductor, and the insulating member and the conductor are
By holding in a non-contact state betweenConductors and insulation
Prevents generation of frictional heat due to clearance between members
Lead wire breakage, insulation member melting, handpiece book
Prevents the operator from being burned due to heat generated by the body casing
To. Due to this, frictional heat is generated during the operation of the ultrasonic vibrator.
No heat generation, safety and reliability can be improvedLike
It was made. [0011] 1 to 3 show a first embodiment of the present invention.
This will be described with reference to FIG. Figure 2 is a schematic diagram of the entire ultrasonic surgical device.
1 is the main body of the ultrasonic surgical apparatus, and 2 is
Is a handpiece of the ultrasonic surgical apparatus. In this case, the main body 2a of the handpiece 2 is
Connected to the ultrasonic surgical apparatus main body 1 through the
Has been continued. Further, suction is applied to the ultrasonic surgical apparatus main body 1 side.
Pull pump 4, suction bottle 5, water bottle 6, etc. are provided
Have been. Furthermore, at the end of the handpiece body 2a
One end of the suction tube 7 is connected. This suction tube
The other end of the probe 7 is connected to the suction pump 4 via the suction bottle 5
Have been. The handpiece body 2a has an ultrasonic probe.
Lobe 11 and sheath to cover probe 11
12 are provided respectively. And at the time of ultrasonic surgery
Into the handpiece body 2a through the water supply tube 8
Water is supplied for cooling or cleaning of the surgical site,
The tissue aspirated after being destroyed by the probe 11
Suction through the suction pipe in the dope piece 2 to the suction tube 7 side.
It is drawn and sent to the suction bottle 5. Further, the casing of the handpiece body 2a
An ultrasonic vibrator 22 is provided inside the bracket 21.
A vibration element 23 that generates vibration is provided on the ultrasonic vibrator 22.
And an electrode 24 for applying a voltage to the vibrating element 23, and an amplitude
And the horn 25boltStopped
You. The electrode 24 of the ultrasonic vibrator 22 has a c
A pair of internal cords 2 arranged in the second piece cord 3
Core wire of lead wire 27 branched from 6, 26 (conductive member)
28 are connected. In this case, the lead wire 27 is
And a covering portion for covering the core wire 28 as shown in FIG.
Material 29. And this lead wire 2
7 is provided with a covering member near the connection portion with the electrode 24.
29 is removed, and the core wire 28 is exposed.
Have been. Further, the core wire 28 of the lead wire 27
The exposed part is a heat-shrinkable tube made of insulating material (absolute
The edge member 30 is connected to the connection between the core wire 28 and the electrode 24.
It is provided in a non-contact state with a clearance.
In this case, one end of the heat-shrinkable tube 30 is
The heat-shrinkable tube 3
0 is connected to the core wire 28 of the lead wire 27 and the electrode 24.
It extends to the location of the continuation. Next, the operation of the above configuration will be described.
First, when the ultrasonic vibrator 22 of the handpiece 2 is driven,
The vibration generated by the vibration element 23 is transmitted to the electrode 24,
To the core wire 28 of the lead wire 27. At this time, the vibration generated by the vibration element 23 is
From the electrode 24, this electrode 24 and the core wire 28 of the lead wire 27
Of the lead wire 27 and the core wire 28 of the lead wire 27
As it gradually attenuates, the covering of the lead wire 27
Vibration hardly occurs at the position of the material 29. The vibrating electrode 24 and the lead 2
7 at the electrode connection portion with the core wire 28 and the lead wire 27.
The exposed portion of the core wire 28 has a heat-shrinkable cable made of an insulating material.
The tube 30 is connected to the connection between the core wire 28 and the electrode 24.
It is provided in a non-contact state with clearance
The connection between the electrode 24 and the lead wire 27 as in the prior art
Insulation parts such as insulation coating or heat shrink tubing
The electrode 24 and the lead wire as in the case where
27 between the conductor of the core wire 28 and the heat-shrinkable tube 30
Does not generate frictional heat. Therefore, the core wire of the electrode 24 and the lead wire 27
Heat generated between the conductor 28 and the heat-shrinkable tube 30
Because it can be prevented, disconnection of the lead wire 27 and heat
It is possible to prevent the shrink tube 30 from melting.
In addition, heat generation of the casing 21 of the handpiece body 2a, etc.
Of the ultrasonic surgical handpiece 2
Reliability and safety can be improved. The vibrating electrode 24 and the lead 2
7 at the electrode connection portion with the core wire 28 and the lead wire 27.
Between the exposed portion of the core wire 28 and the heat-shrinkable tube 30
The length of the clearance is determined by the amplitude of the vibrating element 23.
Although it depends on the size, generally, the larger the amplitude,
Because the part where the vibration is transmitted becomes larger, increase the clearance.
It is better to increase the length of the part. FIG. 4 shows an ultrasonic surgical handpiece 2.
The suction base 31 and the water supply base are provided on the outer peripheral surface of the main body 2a.
32, and the suction tube 7 is fed to the suction base 31.
The water supply tubes 8 are connected to the water base 32, respectively.
It is. In this case, the suction base 31 and the water supply base
For those who wear paint or colored rings on 32
Colored parts are formed in different colors by the
It is distinguished by color coding. For example, for suction
A first colored portion 31m of an appropriate color is formed on the base 31.
The water supply base 32 is different from the first colored portion 31m.
A second colored portion 32m of a color is formed. The first colored portion 31m and the second
The range of coloring of the color portion 32m is shown in FIG.
In addition to the target coloring, the suction base 31 and the water supply base 32 as a whole
Method of coloring all, or use colored materials
To form suction base 31 and water supply base 32 by suction
Etc. are also conceivable. Further, the suction base 31 and the water supply base 3
2 to the suction tube 7 and the water supply tube 8
Marking is applied in the color corresponding to the color of each base
Each of the first colored portion 7m and the second colored portion 8m has a shape.
Has been established. Therefore, in the above configuration, the suction
The suction tube 7 and the water supply channel are connected to the base 31 and the water supply base 32.
At the time of connection work to connect
Between the tube 7 and the base 31 of the same color, or the tube 8
And the base 32 are connected respectively. Thus, the suction base 31 and the water supply base are provided.
32, a suction tube 7 connected thereto,
By connecting the tubes 7 and 8 by color coding
Mistakes can be prevented. In particular, the suction tubes 7 and 7 having the same tube diameter are used.
When the water supply tube 8 is used, the suction tube 7
And the water supply tube 8 to the opposite bases 32 and 31, respectively.
Suction can be prevented before connecting
The tube 7 and the water supply tube 8 are connected to the opposite bases 32, 31.
Ultrasonic surgical device body 1 as if connected to
To prevent patient failure and improve patient safety.
Can be. FIG. 5 shows an ultrasonic wave of the ultrasonic probe 11.
It shows the vibration transmission characteristics of vibration. Where the ultrasonic
A threaded portion 33 is formed at the rear end of the probe 11.
By the screw part 33 to the ultrasonic vibrator 22 of the handpiece 2
It is connected. Further, the ultrasonic probe 11 is, for example,
The probe is made of
A suction hole 35 penetrating along the central axis of 11 is formed.
I have. When the ultrasonic vibrator 22 operates, the ultrasonic vibration
The ultrasonic vibration generated by the moving element 22 is transmitted to the ultrasonic probe 1.
1 to the distal end portion 34, and the probe 11
After emulsifying the tissue by applying the distal end portion 34 to the affected area, a professional
The tissue is sucked and removed through the suction hole 35 in the probe 11.
It has become. The tip 34 of the ultrasonic probe 11
Hard tissue is cut off on the outer surface, or the inner surface of the sheath 12
TiN, TiC, etc. to prevent wear due to contact with
Ceramics, for example, by ion plating
The coating portion 36 coated by
Have been. The coating 36 is located at the tip of the probe 11.
It is applied to a range of length L from the end to a quarter wavelength. In this case, the length of the ultrasonic probe 11 is λ
/ 2 · n (λ is the wavelength, n is a natural number)
The distal end 34 of the probe 11, which is a free end, is vibrated.
It is set to be a belly for movement. Therefore,
There is always one or more vibration nodes in the bush 11. In FIG.
As shown, the probe of the ultrasonic probe 11
Since the strain of No. 11 becomes maximum, an ultrasonic
Ceramics of different material is coated
When the ultrasonic transducer 22 oscillates with a large amplitude,
Cracks in the ceramics
And the coating part 36 is peeled off from the starting point.
There is a risk. Therefore, as described above, the ultrasonic probe
Coating part 36 applied to the outer peripheral surface of the tip part 34 of No. 11
Is the range of the length L from the tip of the probe 11 to 1/4 wavelength.
By vibrating the probe 11 with a large amplitude
Also, cracks occur in the coating part 36 at the nodes of vibration.
And peeling can be prevented. FIG. 6 shows a second embodiment of the present invention.
Things. This is applied to the electrode 24 of the ultrasonic vibrator 22.
The covering member 29 of the lead wire 27 is removed, and
The exposed core wire 28 is connected to the vibrating element.
An insulating member such as a silicon coating 41 is
It has been applied. The casing 21 is, for example,
It is formed of an insulating material such as a plastic. Therefore, in the above configuration,
Vibrating element 23 coated with silicon film 41 and casing
The lead wire 27 is exposed in the space between
Since the exposed core wire 28 is arranged,
No frictional heat is generated even if the vibration is transmitted to the core wire 28.
No. Therefore, also in this case, the same as in the first embodiment is used.
Of the lead wire 27 and melting of the heat shrink tube 30
Handpiece body 2a
The heat of the casing 21 can be suppressed, and the
The reliability and safety of the wave surgical handpiece 2
be able to. Also, the handpiece body 2a shown in FIG.
Insulation material such as heat shrink tube 30 is separately installed
Since it is not necessary to perform the operation, the entire handpiece 2 is downsized.
be able to. FIGS. 7 and 8 show the ultrasonic vibrator 22.
Lead 27 connected to the electrode 24 of the
2 shows a connection structure with an internal cord 26 provided in the cable 3.
It is something. That is, here, the lead wire 27 and the internal core
A connector 42 shown in FIG.
It is. The connector 42 is, for example, a flat plate.
The connector 42 is bent in a cylindrical shape.
The pressure at which the core wire 26a of the internal cord 26 is inserted into the end portion
Attachment part 43, core wire 28 of lead wire 27 is inserted at the other end side
Soldering portions 44 to be formed are respectively formed. Then, the lead wire 27 and the internal cord 26
During the connection work, the internal
After the core wire 26a of the arm 26 is inserted,
The core wire 26a of the inner cord 26 is
It is crimped. Next, several bundles of lead wires 27 are provided.
Core wire 28 was inserted into the soldered portion 44 of the connector 42.
After that, the core wire 28 of the lead wire 27 is half
It is put on the field. Therefore, in the case of the above configuration,
Using a connector 42 having a portion 44 and a crimping portion 43.
Lead 27 and the internal cord 26.
Therefore, at the time of repair or the like, the soldered portion 44 of the connector 42 is used.
The core wire 28 of the lead wire 27 soldered to is relatively simple
Can be removed from the connector 42. It should be noted that the coating 26b of the inner cord 26 is fixed.
At the boundary between the core wire 26a and the covering portion 26b by soldering.
In order to prevent stress concentration from occurring,
The crimping part 43 of the denter 42 can also be caulked. FIGS. 9A to 9D show an ultrasonic probe.
3 shows a sheath unit of the valve 54. This sheath
The unit includes an outer sheath 51 shown in FIG.
And the inner sheath 53 shown in FIG.
Is provided. Further, the outer sheath 51 of the sheath unit
Is disposed at the insertion portion 51a and at the base end of the insertion portion 51a.
And an attachment portion 51b. Also,
The insertion portion 52a and the insertion portion 52a
Attachment part 58 disposed at the base end, middle sheath
52 and a base of the middle sheath body 52b.
A connection portion 52c is provided at the end. same
As described above, the insertion portion 53a and the insertion portion 5
3aBase end sideArranged inMain body 53 of inner sheath 53
b, and disposed at the proximal end of the inner sheath body 53b.
A connecting portion 53c is provided. 59 is the inner sea
Between the outer sheath 53 and the middle sheath 52 substantially concentrically.
Spacer. This sheath unit is shown in FIG.
The middle sheath 52 is inserted into the outer sheath 51 as shown in FIG.
The inner sheath 53 is further inserted into the inner sheath 52.
And a triple-layered sheath
A unit is formed. Further, this sheath unit is provided with an outer sheath 5
1 attachment part 51bA female formed on the inner surface of
And the outer peripheral surface of the attachment portion 58 of the middle sheath 52.
Detachable between the formed male thread and screwed state
While being connected, the inside of the connecting portion 52c of the middle sheath 52
Connecting portion 53 between female screw portion formed on peripheral surface and inner sheath 53
Screwed between the external thread formed on the outer peripheral surface of c
It is connected detachably. And this sheath uni
The connection part 52c of the middle sheath 52 isHand shown in FIG.
It is connected to the piece main body 2a. And the combination of this sheath unit
Sometimes an annular ring between the ultrasonic probe 54 and the inner sheath 53
Depending on the space, the water supply channel 55, the inner sheath 53 and the middle sheath 52
The suction space 56, the middle sheath 52 and
The heat insulating layer 57 is formed by the annular space between the outer sheath 51 and the outer space.
Each is formed. Each of the sheaths 51, 5 of the sheath unit
2 and 53 are inserted into the body cavity.
Area to minimize invasion of the patient.
It is desired to make it. Therefore, the insertion portion of the inner sheath 53
53a and the insertion portion 52a of the middle sheath 52 are thin and strong
It is formed by a simple metal pipe. On the other hand, the ultrasonic probe 54 has a high frequency ablation.
Since the current is supplied, it constitutes the exterior of the sheath unit.
Insertion portion 51a of the outer sheath 51 and the middle sheath body portion 52b
Etc. are made of plastic material,
Is preventing it. In this case, the inside of the metal pipe
Attachment section is provided at the rear end of insertion section 52a of sheath 52.
58, a metal intermediate ring 61 for forming the bonding, soldering,
It is fixed by brazing or the like. Furthermore, this intermediate ring 6
The first flange portion 62 is a plastic middle sheath body portion.
52b and a plastic fixing screw fixed thereto.
It is sandwiched between the fixing ring 64. O-ring 63
Provided on the flange portion 62 of the intermediate ring 61,
It keeps the knit watertight. Therefore, in the case of the above configuration, the metal
After the insertion portion 52a of the middle sheath 52 formed by the Ip
Attach metal intermediate ring 61 to end, solder, braze, etc.
And the flange of the intermediate ring 61
The portion 62 is made of a plastic middle sheath body 52b and
Plastic fixing ring 64 screwed into
And the middle sheath 5
The second insertion portion 52a is formed of metal,
The part 52b is made of a plastic material different from that of the insertion part 52a.
Even if formed by metal and plastic
In this way, the bonding between different materials can be
The ultrasonic probe 54 is attached to the attachment portion 58 of the base 52.
Even if pulling or twisting force acts during the operation of
There is no risk of damage. FIGS. 10A to 10C show a plurality of types.
Ultrasonic probes 71a, 71b, 71c and a plurality of types of
Shows combination with sheaths 72a, 72b, 72c
It is. Here, in the case of the ultrasonic surgical apparatus, a treatment target site
Ultrasonic probe with various lengths, angles, tip shapes, etc.
Are prepared in advance, and
Corresponding sheaths 72a, 72b, 72c,.
available. Then, each probe 71a, 71b, 71
c,... handpiece connecting portions 73a, 73b, 73c,
... and the hands of the sheaths 72a, 72b, 72c, ...
The piece connection portions 73a, 73b, 73c,.
The operator has various types of probes 71a, 71b, 71
Select an appropriate one from c, ... and handpiece 2
It is designed to be attached and used. In this case, a probe and a system that can be combined are used.
Souses (71a-72a, 71b-72b, 71c
-72c, ...) with the same color mark.
It can be easily identified. For example, the first combination shown in FIG.
Handpiece connecting part 73a of the ultrasonic probe 71a
Has a red mark 74a and a sheath 72a handpiece
A red mark 76a is displayed on the connection portion 73a.
Have been. Also, the second combination shown in FIG.
To the handpiece connecting portion 73b of the ultrasonic probe 71b
Indicates the blue mark 74b and the handpiece connection of the sheath 72b.
A blue mark 76b is displayed on the connecting portion 73b.
ing. Further, a third combination shown in FIG.
Handpiece connecting portion 73c of the ultrasonic probe 71c
Has a white mark 74c and a sheath 72c handpiece
A white mark 76c is displayed on the connection portion 73c.
Have been. Therefore, in the above configuration, the combination
Probe, sheath (71a-72a,
71b-72b, 71c-72c, ...)
So that the combination can be easily identified.
There are many types of probes and corresponding sheath types
Combination with the probe selected by the surgeon even if the number of types increases
An operation of searching for a sheath to be changed can be easily performed. A probe and a sheath that can be combined
(71a-72a, 71b-72b, 71c-7
2c, ...) is not only color-coded, but also
They may be distinguished by pods or numbers, or by letters or symbols such as alphanumeric characters.
You may separate it. Further, a sheath having a triple structure shown in FIG.
Fig. 11 (A) shows the combination of the unit and the ultrasonic probe.
(H) and probes that can be combined as shown in (H).
Put the same color mark on each sheath of the
It is also possible to adopt a configuration in which the difference can be easily determined. FIG. 11A shows the first combination unit.
Knit outer sheath d₁, (B) shows the first combination unit.
Middle sheath d_Two, (C) are the first combination units
Inner sheath d_Three, (D) are the supersonic sounds of the first combination unit
3 shows a wave probe d ′. in this case,
Outer sheath d₁Attachment part 81, middle sheath d_Twoof
Attachment part 83, inner sheath d_ThreeBase end 85, super
A yellow marker is provided at the base end 87 of the ultrasonic probe d '.
, 82, 84, 86, and 88 are displayed. FIG. 11E shows a second combination unit.
Knit outer sheath e₁, (F) show the second combination unit.
Middle sheath e_Two, (G) are the second combination units
Inner sheath e_Three, (H) are the supersonic sounds of the second combination unit
It shows a wave probe e '. in this case,
Outer sheath e₁Attachment part 91, middle sheath e_Twoof
Attachment part 93, inner sheath e_ThreeBase end 95, super
A green marker is provided at the base end 97 of the ultrasonic probe e '.
, 92, 94, 96 and 98 are displayed. Therefore, in the above configuration, the first
Washing of the combination unit or the second combination unit
Outer sheath d when cleaning₁, Medium sheath d_Two, Inner sheath d_Three,
Ultrasonic probe d 'or outer sheath e₁, Medium sheath e
_Two, Inner sheath e_Three, Disassemble and clean the ultrasonic probe e '
After re-assembly, the outer sheath d₁, Medium sheath
d_Two, Inner sheath d_Three, The yellow marker of the ultrasonic probe d '
82, 84, 86, 88 or outer sheath e₁, Medium
S e_Two, Inner sheath e_ThreeGreen of the ultrasonic probe e '
By looking at the marks 92, 94, 96, 98
Easy combination of parts of each combination unit
Can be determined. The present invention is not limited to the above embodiment.
Instead, various modifications are made without departing from the gist of the present invention.
Of course, it can be implemented. [0067] According to the present invention, the electrode of the ultrasonic vibrator is
Of the conductive material of the lead wire connected to the electrode of
Separating the body insulation member from the conductor,Vibration of the vibrating element
Uncoated core with end vibrated by motion
Non-contact vibration damping part in core wire that dampens wire vibration
Insulated member covered with and fixed to the core wire
Therefore, no heat is generated due to frictional heat during the operation of the ultrasonic vibrator.
In addition, safety and reliability can be improved.This
The insulating member itself due to frictional heat during operation of the ultrasonic vibrator
Prevents lead wires from breaking as well as preventing melting
Or frictional heat is applied to the casing of the handpiece body.
The casing is heated to a high temperature.
Safe and reliable without risk of burns to the surgeon
Providing a reliable ultrasonic surgical handpiece
it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a configuration of a main part of a first embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the entire ultrasonic surgical apparatus. FIG. 3 is a longitudinal sectional view showing the internal configuration of the handpiece body. FIG. 4 is a perspective view showing a tube connecting portion of the handpiece body. FIG. 5 is a characteristic diagram showing a vibration transmission characteristic of ultrasonic vibration of the ultrasonic probe. FIG. 6 is a longitudinal sectional view showing a configuration of a main part of a second embodiment of the present invention. FIG. 7 is a side view showing the internal configuration of the handpiece body. FIG. 8 is a perspective view showing a connector for connecting a conductive cord and a lead wire. 9A and 9B show a sheath unit of the ultrasonic probe, wherein FIG. 9A is a side view showing an outer sheath, FIG. 9B is a side view showing a middle sheath, FIG. 9C is a side view showing an inner sheath, and FIG. )
FIG. 3 is a longitudinal sectional view showing an assembled state of a sheath unit. FIG. 10 shows a combination of an ultrasonic probe and a sheath, where (A) is a side view showing a first combination,
(B) is a side view showing a second combination, and (C) is a side view showing a third combination. 11A and 11B show a combined state of an ultrasonic probe and a sheath unit, wherein FIG. 11A is a side view showing an outer sheath of the first combined unit, and FIG. 11B is a view showing the inside of the first combined unit. Side view showing the sheath, (C) is a side view showing the inner sheath of the first combination unit, (D) is a side view showing the ultrasonic probe of the first combination unit, (E)
Is a side view showing the outer sheath of the second combination unit,
(F) is a side view showing an inner sheath of the second combination unit, (G) is a side view showing an inner sheath of the second combination unit, and (H) is an ultrasonic probe of the second combination unit. FIG. [Description of Signs] 2 ... handpiece, 2a ... handpiece body, 21 ... casing, 22 ... ultrasonic vibrator, 23 ... vibrating element, 24
... electrodes, 28 ... core wires (conductive members), 30 ... heat-shrinkable tubes (insulating members), 41 ... silicon coatings (insulating members).

Claims (1)

(57) Claims: 1. A disposed handpiece body in the casing
The vibrating element, a vibrating element for generating vibration of the ultrasonic vibrator, a voltage supply electrode section for applying a voltage to the vibrating element, and vibrating by vibration of the vibrating element connected to the electrode section.
And an uncoated core wire having an end to be transmitted, and vibration generated by vibration of the vibrating element is transmitted.
Vibration in the core wire to attenuate the vibration of the core wire.
Covers the decayed part without contact and is fixed to the core wire
An ultrasonic surgical handpiece comprising an insulating member .