JP2003210480A - Ultrasonic treatment instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic treatment instrument that can be set to the appropriate maximum output time according to a transducer for the purpose of treatment without depending on the maximum output time based on a timer built in the generator. <P>SOLUTION: A hand piece for coagulation incision is connectable to the generator 2, and the timer built in the generator for the hand piece is set to the relatively long maximum output time. When a puncture probe 11 is fitted and the hand piece 5 for performing puncture treatment is connected, a driving current supplied to the transducer 22 in this case is detected, and a timer unit 28 provided inside the hand piece 5 covers the treatment time required in the case of the puncture treatment to limit to the maximum output time shorter than the case of coagulation incision treatment. Ultrasonic output time can thus be set appropriately according to the purpose of treatment. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic treatment tool that applies ultrasonic vibration to a living tissue to perform treatment for treatment.

[0002]

2. Description of the Related Art JP-A-5-49648 discloses a conventional example used for emulsifying and aspirating a tissue to remove a tumor or the like from a living tissue, and JP-A-2000-12619.
No. 8 discloses a probe that vibrates ultrasonically and a clamp member that sandwiches living tissue to coagulate and incise it.

[0003] These ultrasonic treatment tools stop the ultrasonic output by stopping the operation of a foot switch or the like each time the individual treatment intended by the operator (coagulation incision of living tissue, emulsification suction) is completed.

In addition, depending on the purpose of treatment, there are a vibrator for emulsifying and suction and a plurality of dedicated probes, and an ultrasonic vibrator for coagulation and incision and a plurality of dedicated probes, which generate a drive current. The parameters of the maximum applied drive current value, drive current supply time, and ultrasonic vibration frequency can be individually set according to the type of each ultrasonic transducer. On the other hand, there is an ultrasonic surgery system in which only one type of ultrasonic transducer can be combined with a generator.

[0005]

Generally, in order to prevent the heat generation of the handpiece, the heating of the generator, and the unnecessary thermal influence on the living tissue, the ultrasonic treatment tool is irrelevant to the usage condition of the operator. The maximum ultrasonic wave output time per time may be limited by a built-in timer on the drive device side (generator side) to which the ultrasonic treatment tool is connected.

The maximum output time is often set for each type of handpiece connected to the generator. Depending on the purpose of the treatment, even when the same handpiece is used, there is a need to further shorten the initial maximum output time in order to further reduce the unnecessary thermal effect on the living tissue.

In this case, particularly in a system in which only one type of handpiece can be used, it is necessary to change the maximum output time setting for the timer set value built in the generator.

(Object of the Invention) The present invention has been made in view of the above-mentioned points, and it is possible to use an ultrasonic transducer according to the purpose of treatment regardless of the maximum output time by the timer built in the generator. An object of the present invention is to provide an ultrasonic treatment tool that can set the maximum output time to an appropriate value.

[0009]

In an ultrasonic treatment instrument which is detachably connected to a generator and has an ultrasonic transducer for converting drive power from the generator into ultrasonic vibration, the ultrasonic output time is limited. By incorporating the timer unit, the maximum output time can be set to an appropriate value according to the ultrasonic transducer incorporated in the ultrasonic treatment tool.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 4 relate to a first embodiment of the present invention, and FIG. 1 shows an overall configuration of an ultrasonic operation system including the first embodiment, and FIG. Shows the internal structure of the handpiece with the timer unit built-in, FIG. 3 shows the structure of the electric system of the handpiece shown in FIG. 2, and FIG. 4 shows the operation when the handpiece with the built-in timer unit is used for treatment.

The ultrasonic surgical system 1 shown in FIG. 1 includes a generator 2 for generating a driving current for driving an ultrasonic transducer.
Is connected to this generator 2 and the ultrasonic output O
Foot switch 3 for N and OFF, and generator 2
It is composed of first and second handpieces 4, 5 and the like which are detachably connected to and which form an ultrasonic treatment instrument configured by being combined as shown in the drawing.

The connectors 7 provided at the rear ends of the signal cables 6 extending from the rear ends of the first and second handpieces 4 and 5 are detachably connected to the generator 2.
Further, an ultrasonic vibrator is built in the first and second handpieces 4 and 5, and the drive current supplied from the generator 2 is converted into ultrasonic vibration.

At the front end of the first handpiece 4, a scissors type probe 8a for performing treatment by ultrasonic waves and a scissors type sheath 9a for covering the probe 8a can be assembled. The scissors type sheath 9a covers the scissors type probe 8a, and a handle 10 for opening and closing the tip of the scissors type probe 8a is provided at the rear end of the scissors type sheath 9a.

In the ultrasonic treatment instrument in this case, the handle 1
0 to sandwich the living tissue and turn on the foot switch 3.
By doing so, it can be used as an ultrasonic coagulation / incision device capable of incision with high coagulation force. Further, a hook-shaped hook type probe 8b capable of smoothly coagulating and incising with the probe alone and a hook type sheath 9b covering the hook type probe 8b can be connected to the first handpiece 4.

On the other hand, a puncture probe 11 is previously fixed to the front end of the second handpiece 5, and various treatment tools are attached to the abdominal wall inside the body cavity by combining the puncture probe 11 with an outer tube 12a of φ5, for example. A port (insertion hole) for insertion is provided. If a port with a larger diameter is required, the dilator 13a
The puncture hole is expanded using the
A larger φ11 port can be provided by a.

Similarly, when a larger port is required, the puncture hole can be expanded by using a dilator 13b having a larger diameter, and a larger port of φ13 can be provided by the outer tube 14b of φ13, for example.

The difference between the handpiece 4 and the handpiece 5 is that the handpiece 4 can be used for different purposes by changing the probes 8a, 8b and the sheaths 9a, 9b, while the handpiece 5 has a dedicated probe 11 fixed beforehand. Yes,
They differ in that they are specialized for abdominal wall puncture. Further, the handpiece 5 has a built-in timer unit for limiting the ultrasonic wave output time, as described below, corresponding to the point specialized for abdominal wall puncture.

FIG. 2 is a sectional view showing the internal structure of the handpiece 5. Inside the case 21 of the handpiece 5, an ultrasonic transducer 22 that converts the drive current from the generator 2 into ultrasonic vibration is housed. Specifically, the ultrasonic transducer 22 is arranged inside the cylindrical case 21, and is fixed by screwing with a fixing ring 24 via a packing 23.

The ultrasonic transducer 22 is provided with electrode plates 25 on both sides, and a plurality of disc-shaped piezoelectric elements 26 which are converted into longitudinal vibration by applying a drive current to the electrode plates 25. Formed by stacking and tightening,
Lead wires 27 a and 27 b are soldered to each electrode plate 25.

In this embodiment, a timer unit 28 is provided on the back side of the ultrasonic transducer 22 in the case 21, for example.
The signal cable 6 connected to the generator 2 is connected to the lead wires 27a, 2
7b is connected.

That is, the ultrasonic oscillator 22 is supplied while the drive current is being supplied to the ultrasonic oscillator 22 (in the drive current supply system).
Unit 2 for setting (limiting) the maximum supply time (in other words, the maximum ultrasonic wave output time) of the drive current supplied to the
8 is provided.

The end portion of the signal cable 6 is crimped and fixed to the inside of the rear end of the case 21 by a crimp member 29 in order to prevent the signal cable 6 from coming off, and is bent so as to prevent the root disconnection of the signal cable 6. The prevention rubber 31 is provided at the rear end of the case 21. In addition, on the tip side of the case 21,
Attachment 3 for assembling the outer tube 12a etc. at the time of puncturing
Two are provided.

Handpiece 5 including timer unit 28
The configuration of the electric system of is shown in FIG. As shown in FIG. 3, the timer unit 28 incorporated in the handpiece 5 includes a drive current detection circuit 36 that detects a drive current from the generator 2.
And a timer control circuit 37 that controls the elapsed time of the built-in timer by detecting the drive current from the drive current detection circuit 36, and the drive current detection circuit 36 via the drive current detection circuit 36 after a predetermined time has elapsed by the timer control circuit 37. The switch circuit 38 turns off (cuts off) the drive current supplied to the ultrasonic transducer 22 side. In addition,
Each circuit of the timer unit 28 is supplied from the generator 2 via the signal cable 6 (supplied to the ultrasonic transducer 22).
The operation is performed by the drive current.

The drive current from the generator 2 is applied to the ultrasonic transducer 22 through the timer unit 28. Therefore, when the foot switch 3 is turned on, the drive current of the generator 2 drives the ultrasonic oscillator 22 via the drive current detection circuit 36 of the timer unit 28, and the vibration of the ultrasonic oscillator 22 is punctured by the puncture probe 11. When the driving current is detected, the timer control circuit 37
A timer therein is started to measure the elapsed time, and when a predetermined time has elapsed, the switch circuit 38 is opened to shut off the drive current supplied to the ultrasonic transducer 22.

In this case, the time set by the timer is set longer than the time required for the puncture treatment and no longer needed. That is,
When performing normal puncture treatment, by limiting the output time by the timer, it is possible to eliminate unnecessary heat effects, etc.
It has improved usability.

Next, the operation of this embodiment will be described. When the handpiece 4 is connected to the generator 2, the scissors type probe 8a and the scissors type sheath 9 are provided.
By combining a or the hook type probe 8b and the hook type sheath 9b, it is possible to coagulate and incise the living tissue.

At this time, the ultrasonic wave outputable time per time is determined by a timer (not shown) built in the generator 2. That is, even if the operation of stepping on the foot switch 3 is continued, the ultrasonic wave output time is limited by the timer built in the generator 2 unless the stepping is performed again.

On the other hand, when the handpiece 5 is connected,
When the foot switch 3 is operated, a drive current flows from the signal cable 6 to the timer unit 28. If it is within the time when ultrasonic waves can be output by the timer of the timer unit 28, the lead wires 27a. A driving current flows from 27b to the electrode plate 25, ultrasonic vibration is generated by the ultrasonic vibrator 22,
It is transmitted to the puncture probe 11. When the ultrasonic output possible time of the timer unit 28 (for example, 20 seconds) elapses before the output is stopped by the timer (for example, 50 seconds) built in the generator 2, the stop control operates and the ultrasonic output is stopped.
That is, even when the foot switch 3 continues to step on the ultrasonic output, the ultrasonic output stops within the time set in the timer unit 28.

Next, referring to the flow chart of FIG. 4, the timer operation by the timer unit 28 when the ultrasonic treatment instrument using the handpiece 5 incorporating the timer unit 28 in the present embodiment is connected to the generator 2. explain. When the connector 7 of the signal cable 6 of the handpiece 5 is connected to the generator 2 and the power of the generator 2 is turned on, the operating power is also supplied to the timer unit 28 to be in the operating state, and step S1 in FIG. 4 is performed. As shown, the drive current detection circuit 36 performs an operation of periodically detecting the drive current (for example, every 50 mS). When the drive current is not detected, the timer in the timer control circuit 37 is reset as shown in step S2,
Return to step S1.

On the other hand, when the drive current is detected by turning on the foot switch 3, it is determined whether the timer is already operating (step S3). If it is determined that the timer is not operating, the timer is turned on to start (time counting) counting (step S4), and the process returns to step S1.

On the other hand, when the timer is already operating, the counting is continued as shown in step S5, and the process proceeds to step S6.

In step S6, it is determined whether or not the timer is at the limit (that is, the set predetermined time). If the limit has not been reached, the process returns to step S1 to continue counting.

On the other hand, when the timer has reached the limit (for example, 20 seconds after the timer starts), the switch of the switch circuit 38 is turned off and the timer in the timer control circuit 37 is also turned off as shown in step S7. . Then, in the next step S8, for example, when one second has elapsed, the switch is turned on.
After setting to N, the process returns to step S1 to prepare for the next drive current supply operation.

The present embodiment has the following effects. When the handpiece 5 mainly used for abdominal wall puncture is used, the maximum ultrasonic wave output time can be restricted to be shorter than that when the handpiece 4 mainly used for coagulation incision having a relatively long ultrasonic output time is used. It is possible to prevent unnecessary heat effects on the product.

Even when the generator 2 has only the timer mode of the maximum output time for one type of handpiece,
By using the handpiece 5 with a built-in timer, a different maximum output time can be set.

In step S8 of FIG. 4, the switch may be turned on after the drive current detection circuit 28 stops detecting the drive current. Alternatively, both may be selectable.

The timer limit is set by the timer unit 28, and the switch of the switch circuit 38 is turned off.
When the switch is turned on next time, a signal for resetting the timer built in the generator 2 may be output to the generator 2.

In this way, for example, the generator 2
This is effective when the time limit of the built-in timer and the time limit of the timer of the timer unit 28 are relatively close.

For example, when the time limit of the timer built in the generator 2 is 40 seconds and the time limit of the timer of the timer unit 28 is 30 seconds, the time limit of the timer of the timer unit 28, that is, when the treatment is performed for 30 seconds, the timer is The unit 28 turns off the switch, and then (after 1 second in the case of step S8 in FIG. 4) the switch turns off.
If the foot switch 3 is continuously turned on, the timer built in the generator 2 has a limit time of 40 seconds, so if it is continuously turned on, it will be turned on for a maximum of 9 seconds, but can be reset. In the following case, the timer limit time of the timer unit 28 can be set to 30 seconds. That is, the usability can be further improved.

(Modification of First Embodiment) FIG. 5 shows a handpiece 5 in a modification. In the first embodiment, the timer control circuit 37 presets the timer time to a predetermined time with a semi-fixed resistor or the like, but in the present modification, the axis of the variable resistor that determines the timer time is set to the case 21. 5, the timer dial 41 provided on the outer surface of the case 21 was attached to the shaft of the variable resistor so that the maximum ultrasonic wave output time could be set to an unspecified floor as shown in FIG.

Further, on the outer surface of the case 21, there is provided an indicator lamp 42 which is turned on immediately before the maximum output time is reached.

As a function and effect of this modification, since the maximum output time can be set without permission within the maximum ultrasonic wave output time of the generator 2, the unnecessary ultrasonic wave is adjusted according to the operator's intention and level. Output can be prevented. Moreover, since the indicator lamp 42 is turned on immediately before the maximum output time is reached and the operator can visually know the ultrasonic wave output time, unnecessary ultrasonic wave output can be prevented.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 11. The description of the same structure as that of the first embodiment will be omitted. In this embodiment, the signal cable 6 that is integrally provided in the handpieces 4 and 5 of the first embodiment is detachable. That is, the handpiece is composed of a handpiece main body having a built-in ultrasonic transducer and a cable unit (detachable cable) detachable from the handpiece main body.

In the ultrasonic operation system 51 shown in FIG. 6,
The generator 52 that outputs the drive current outputs the output O
A foot switch 53 for performing N and OFF is connected. Further, a generator plug 56 provided at one end of a detachable cable 55 that constitutes an ultrasonic treatment instrument can be detachably connected to the socket portion 54 of the generator 52.

In this case, the generator plug 5 is provided on the front panel near the socket 54 of the generator 52.
Index 54a for circumferential positioning when connecting 6
(Circle) is provided, and when the generator plug 56 is connected to the generator 52, the indicator 56a (circle) provided on the generator plug 56 is aligned and connected (connection is possible by performing an operation). Will be).

A socket 57 provided at the other end of the detachable cable 54 has a handpiece body 58 used for coagulation and incision, a suction handpiece body 59 used for crushing and emulsifying suction, and other uses (not shown). It can be detachably connected to other handpieces.

In the present embodiment, the handpiece body 58
At the front end of the handpiece main body 58, a puncture probe 60 (corresponding to the puncture probe 11 in FIG. 1) is provided in addition to the coagulation / incision system probes 8a and 8b and the sheaths 9a and 9b described in the first embodiment. It is configured to be attachable and detachable by screw fastening.

Further, a handpiece adapter 61 described later is provided.
By mounting the puncture probe 60 between the handpiece main body 58 and the socket 57, 5φ
The outer tube 12a and the dilators 13a and 13b are inserted so that the outer tubes 14a and 14b can be used in combination.

The handpiece main body 59 is of a type that can be used exclusively for a probe for crushing, emulsifying and sucking a living tissue, and has a suction hole at the center of the built-in ultrasonic vibrator. The handpiece main body 59 has a bending probe 62a and a bending sheath 63a depending on the target region to be treated.
Long probe 62b and long sheath 63b for endoscopic surgery, and short probe 6 for laparotomy
2c and the short sheath 63c can be used in combination.

The socket 57 and the handpiece body 5
8, 59 and the handpiece adapter 61 are provided with triangular marks 57a, 58a, 59a and 61a, respectively.

When the socket 57 is connected to the handpiece body 58 and the handpiece body 59, the index 57a and the index 58a or 59a are connected together. Since the index shapes of the index 57a and the index 56a are different, erroneous connection can be prevented.

FIG. 7 shows the internal structure of the handpiece body 58, the handpiece adapter 61, and the socket 57. 7A shows a cross section of the handpiece main body 58, for example, in the horizontal (lateral) direction, and FIG. 7B shows the handpiece main body 58.
Vertical (longitudinal) cross section of the handpiece adapter 6
1 shows a vertical cross section of the socket 57.

The handpiece body 58 has a substantially cylindrical case 66 in which the ultrasonic transducer 22 for converting a drive current into ultrasonic vibration is housed and fixed. The case 66 is attached to the end of the case 66 on the hand side. A plug 67 formed integrally with
Is provided.

An annular groove (recess) is formed in the plug 67 around the plug protrusion 67a (on the center side), and an ultrasonic drive current is applied to the ultrasonic transducer 22 on the side surface of the plug protrusion 67a. Two contacts 68a, 68b supplied to
Two contacts 68c and 68d for detecting the type of the handpiece body 58 are provided on the plug protrusion 67a by insert molding.

FIG. 8 shows the plug 6 of the handpiece body 58.
FIG. 7 is a perspective view of the side of FIG. 7, showing contacts 68a, 68b, 68c, 6
It can be seen that 8d is formed on the side surface of the plug protrusion 67a. As shown in FIG. 7B, the contacts 68a, 68b
Is electrically connected to the ultrasonic transducer 22 inside the case 66 by a lead wire 69a and a lead wire 69b. Figure 7
As shown in (A), the contacts 68c and 68d are electrically connected to a discriminating element 70 for detecting the handpiece type inside the case.

Further, as shown in FIGS. 7 (B) and 9, an internal wall-shaped or tubular internal socket 71 is formed inside the socket 57, and slits 71a, 71b, 71c are formed on the wall surfaces thereof. , Slits 71d are formed in each of which contacts 72a, 72b, 72c, 7 are formed.
2d is arranged, and the base of each contact 72i (i = a to d) is fixed to the socket 57 by insert molding.

The contacts 72a to 72d are in the shape of a cantilever and project inwardly in a mountain shape. Two contacts 72a, 72b supply an ultrasonic drive current and the other two contacts 72c, 72d are used to detect handpiece type. Lead wires 73a to 73d are electrically connected to the respective contacts 72a to 72d (lead wires 73c and 73d are not shown).

FIG. 9 shows a perspective view of the opening of the socket 57. Inside the socket 57, the internal socket 71
It can be seen that the contacts are formed and the contacts 72a to 72d are arranged. Further, the levers 57 b and 57 c protruding to the outer peripheral surface of the socket 57 are detachable levers that are pushed when the socket 57 is detached from the plug 67.

Further, in the handpiece adapter 61 shown in FIG. 7B, the recessed portion 76 formed on the tip side of the substantially cylindrical outer case 75 has an inner diameter and a depth into which the handpiece body 58 can be inserted. .

An internal socket 77 having the same shape as the internal socket 71 of the socket 57 is formed near the wall surface (bottom surface) in the deep portion of the recess 76, and the slit 77a is formed on the side surface thereof.
~ Slit 77d is formed (slit 77c,
The slit 77d is not shown). Each slit 77a-7
7d includes contacts 78a to 78d that are cantilevered and project inwardly in a mountain shape, and the roots thereof are fixed to the outer case 75 by insert molding.

A plug 79 having the same shape as the plug 67 is formed on the outer surface of the outer case 75 on the proximal side, and an annular groove centered on the plug projection 79a is formed on the plug 79. On the side surface of 79a, a contact 8 for supplying an ultrasonic drive current to the contacts 78a, 78b.
0a, a contact 80b, and a contact 80c and a contact 80d for supplying a detection current to the contacts 78c and 78d for detecting the type of the handpiece are provided on the plug protrusion 79a by insert molding (the contacts 78c, 78d and the contact 8).
0c and 80d are not shown).

The fixed ends of the contacts 78a and 78b on the root side and the ends of the contacts 80a and 80b on the root side are housed in a sealed space provided between the internal socket 77 and the plug 79. It is electrically connected to the unit 81, and when a drive current is supplied to the contacts 80a and 80b, a timer built in the timer unit 81 is activated.

In the present embodiment, the handpiece main body 58
In addition to the treatment of coagulation and incision, it is effective to be able to perform the procedure of puncture and to limit the maximum ultrasonic wave output time when performing the procedure of puncture as compared with the case of performing the procedure of coagulation and incision. Therefore, when the handpiece adapter 61 is used and the puncture treatment is performed by the timer unit 81 incorporated in the handpiece adapter 61, the maximum ultrasonic wave output time is (incorporated in the generator 52, The limit is shorter than the maximum ultrasonic wave output time set for the treatment of coagulation incision.

Next, the operation of this embodiment will be described. Scissor type probe 8a, scissor type sheath 9
a, hook type probe 8b, hook type sheath 9b probes and sheaths, when used for coagulation incision, connect them to the handpiece body 58,
The socket 57 is connected to the plug 67 of the handpiece body 58.

When connecting the socket 57 to the plug 67, as shown in FIG. 10 (A), triangular indicators 58a and 57 on the outer surfaces of the handpiece body 58 and the socket 57 are used.
When the positions of a are aligned and combined, the plug protrusion 67a is formed.
The inner socket 71 fits in the surrounding annular groove.

At the same time as the connection, the handpiece type detection current from the generator 52 is supplied from the core wire in the detachable cable 55 to the contacts 72c and 72d, and from the contact portion protruding in a mountain shape to the discrimination element 70 via the contacts 68c and 68d. Then, the generator 52 recognizes the type of the handpiece and sets the maximum possible output time specific to the handpiece main body 58. Specifically, the maximum output possible time is set for the treatment of coagulation incision (this time is longer than the time set in the case of puncture treatment). By operating the foot switch 53, ultrasonic waves can be output.

On the other hand, the puncture probe 60, the outer tube 12a,
When the abdominal wall is punctured using the mantle tube 14a, the dilator 13a, the mantle tube 14b, and the dilator 13b, the handpiece adapter 61 is used.

When the handpiece main body 58 is inserted into the handpiece adapter 61, the internal socket 77 fits in the annular groove around the plug protrusion 67a, and the handpiece main body 58 is attached to the handpiece adapter 61.

After the probe, outer tube and dilator necessary for puncturing are combined, the hand side adapter 4 on the hand side 4
Assemble the socket 57 to 3. Then, it becomes like FIG. In FIG. 11, the outer tube, the probe and the dilator are not shown.

The generator plug 56 of the detachable cable 55 connected to the socket 57 is connected to the generator 5
At the same time as connecting to 2, the handpiece type detection current from the generator 52 from the core wire in the detachable cable 55 to the contact 7
2c, 72d, contact point 80c → contact point 78c → contact point 68c, contact point 80d → contact point 78d → contact point 68d from the contact portion protruding in a mountain shape to the discrimination element 70, and the generator 52 recognizes the type of the handpiece. The maximum possible output time specific to the handpiece body 58 is set.

When the foot switch 53 is operated here,
The drive current is transferred from the core wire in the detachable cable 55 to the contact 72a,
72b, and contact 80a → contact 78a →
The contact point 68a, the contact point 80b, the contact point 78b, and the contact point 68b are reached and finally supplied to the ultrasonic transducer 22.

A timer unit 8 is provided in the drive current path on the way.
Since there is 1, the ultrasonic wave output can be stopped by the timer of the timer unit 81 before the ultrasonic wave output is stopped within the maximum ultrasonic wave output time specific to the handpiece body 58 recognized by the generator 52. That is, even if the operation of the foot switch 53 is continued, the ultrasonic output is stopped within the time set by the timer unit 81.

This embodiment has the following effects. Even if the generator 52 is capable of recognizing and using a plurality of types of handpieces such as a handpiece for crushing and emulsifying and sucking tissue, a handpiece for coagulation and incision, and a cable is detachable from the handpiece, an expensive abdominal wall puncture dedicated hand The abdominal wall can be easily punctured without preparing a piece, and the maximum ultrasonic wave output time can be limited to a short time, so that unnecessary heat influence on the tissue can be prevented.

(Modification of Second Embodiment) FIG. 12 (A)
And FIG. 12 (B) shows a modification of the second embodiment.
FIG. 12A shows a schematic configuration of a modified ultrasonic surgery system 51 ', and FIG. 12B shows conditions for the maximum ultrasonic wave output time.

As shown in FIG. 12A, the generator 5
2 is connected to a handpiece adapter 61 having a built-in timer unit 91 by a detachable cable 55, and the handpiece adapter 61 has a handpiece main body having an ultrasonic transducer 22 and a discriminating element 92 (hereinafter referred to as simplification). Therefore, the handpiece (abbreviated as a handpiece) A can be connected.

Further, in this modified example, as shown in FIG. 12B, the other handpieces B and C similarly have the generator 52 by the detachable cable 55 via the handpiece adapter 61 incorporating the corresponding timer unit 91. I am able to connect to.

The generator 52 is an ultrasonic drive circuit 93 for generating a drive current, and a handpiece type detection circuit 94 for discriminating the type of the handpiece by the discriminating element 92.
And a control circuit 95 with a built-in timer that controls the drive of the ultrasonic drive circuit 93 based on the determination result of the handpiece type detection circuit 94.

As shown in FIG. 12B, when A, B and C are considered for the types of handpieces, the values of the discrimination resistance by the discrimination element 92 are a, b and c, respectively. The generator 52 corresponds to the value of each of the discrimination elements 92.
The set time of the built-in timer is set to α, β, γ (seconds).

In the case of such a configuration, the timer unit 9
When the handpiece adapter 61 incorporating 1 is combined, the actual maximum ultrasonic wave output time is
, The maximum ultrasonic wave output time of each handpiece A, B, C is x, y, z (seconds). With this configuration, in addition to the effects of the first embodiment, the maximum ultrasonic wave output time can be set with a handpiece other than the handpiece body 58. However, the set time of the timer unit 91:
x, y, z (seconds) <Timer with built-in generator:
The conditions α, β, γ (seconds) are required.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. 13 (A) and 13 (B). FIG. 13 (A) shows a schematic configuration of the ultrasonic operation system 51 ″, and FIG. 13 (B) shows conditions for the maximum ultrasonic wave output time.

Description of the same structure as that of the second embodiment is omitted. The difference from the second embodiment is that the handpiece adapter 61 'is different from the timer unit 81 or 91.
, And the discrimination element 97 is incorporated. In the handpiece adapter 61 ', the contact for the discrimination element built in the handpiece is omitted.

Next, the operation of this embodiment will be described. Regarding the type of handpiece, as shown in FIG.
Considering B and C, the discrimination element 92 has a, b, and
c. The timer built into the generator is set to α, β, γ (seconds) corresponding to each of the discrimination elements.

When the handpiece adapter 61 'is combined between the handpiece I (I = A to C) and the detachable cable 55, the discriminating element 97 is recognized by the handpiece type detecting circuit 94 in the generator 52. Control circuit 9 with built-in timer
In 5, the control is performed so that the timer is set at the maximum ultrasonic wave output time corresponding to the discriminating element 97, and the ultrasonic wave drive circuit 93 can output.

For example, in the case where the handpiece A and the handpiece adapter 61 'having the built-in b as the discriminating element 97 are combined, the maximum ultrasonic wave output time is β.
(Seconds).

This embodiment has the following effects. By using a handpiece adapter with a built-in discriminating element of the handpiece type, you can set the maximum ultrasonic output time by setting the handpiece for other purposes without separately preparing an expensive handpiece, reducing system cost it can.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 14 is the fourth
1 shows a schematic configuration of an ultrasonic operation system 101 according to the embodiment. In this embodiment, the following modifications are made to the handpiece body 58 and the detachable cable 55 of the second embodiment.

In the present embodiment, the handpiece body 5
8'is a timer value selector switch 102 for switching the timer value.
The detachable cable 55 'includes a timer changeover line 103 connected to the timer value changeover switch 102, and the generator 52' includes a timer changeover circuit 104 for changing over the timer.
02, the timer value switching signal is the timer switching line 103.
It can be input to the timer switching circuit 104 via. Then, the timer switching circuit 104 can switch and set the maximum ultrasonic wave output time by the timer of the control circuit 95.

According to this structure, the operator can easily set the maximum ultrasonic wave output time by switching the timer value selector switch 102 on the operator's side, so that the operation efficiency is improved and the operator's operation level is adjusted according to the operation level. It can be used without stress by setting the maximum ultrasonic output time.

[Additional Notes] 1. An ultrasonic treatment instrument that is detachably connected to a generator and has an ultrasonic transducer that converts a drive current from the generator into ultrasonic vibration, including a timer unit that limits ultrasonic output time. Ultrasonic treatment tool. 2. In Appendix 1, the timer unit is provided in a part of the drive current supply system before reaching the ultrasonic vibrator, and is operated by input of the drive current. 3. In Appendix 2, the timer unit includes a drive current detection circuit, a timer control circuit, and a switch circuit.

4. In Appendix 3, the detection of the drive current is
The timer is automatically stopped when the driving current is no longer supplied. 5. In Appendix 3, the handpiece is provided with a unit for setting a timer for limiting the ultrasonic wave output time steplessly. 6. In Supplementary Note 3, the handpiece is provided with a display means for allowing the operator to recognize the ultrasonic wave output time.

7. A handpiece in which a cable unit that transmits the drive current from the generator can be attached to and detached from the handpiece body that incorporates an ultrasonic vibrator that converts the drive current from the generator into ultrasonic vibration. A detachable first connector, and the cable unit has a detachable second connector on the handpiece body.
A handpiece adapter having a third connector detachable from the first connector and a fourth connector detachable from the second connector between the first connector and the second connector. A handpiece that is characterized by.

8. In Appendix 7, the handpiece adapter has a built-in timer unit for limiting the ultrasonic wave output time in the drive current supply system. 9. In Appendix 7, the handpiece adapter has a built-in discriminating element for detecting the handpiece type. 10. In Appendix 7, the handpiece body is provided with a timer value setting switching means.

[0093]

As described above, according to the present invention, by incorporating the timer unit in the handpiece, the maximum ultrasonic wave output time can be limited regardless of the maximum ultrasonic wave output time of the generator. It is possible to prevent the heat generation, the heat generation of the generator, and the unnecessary heat effect on the living tissue.

Even in an ultrasonic operation system in which only one type of handpiece can be connected to the generator, the same effect can be obtained by incorporating a timer unit for the required maximum ultrasonic wave output time in the handpiece.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an ultrasonic operation system including a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an internal configuration of a handpiece including a timer unit.

FIG. 3 is a block diagram showing a configuration of an electric system of the handpiece of FIG.

FIG. 4 is a flowchart showing an operation when a handpiece having a timer unit is used for treatment.

FIG. 5 is a side view showing a configuration of a handpiece including a timer unit according to a modified example.

FIG. 6 is an overall configuration diagram of an ultrasonic operation system including a second embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a handpiece or the like used for coagulation incision and puncture.

FIG. 8 is a perspective view showing a plug portion of the handpiece.

FIG. 9 is a perspective view showing an internal socket portion of the socket.

FIG. 10 is a view showing a state in which the socket is attached to the handpiece.

FIG. 11 is a cross-sectional view showing a main part in a state where the handpiece is incorporated in the handpiece adapter and attached to the socket.

FIG. 12 is a diagram showing a schematic configuration of an ultrasonic surgery system of a modified example, conditions of maximum ultrasonic wave output time, and the like.

FIG. 13 is a diagram showing a schematic configuration of an ultrasonic operation system including a third embodiment of the present invention, conditions of maximum ultrasonic output time, and the like.

FIG. 14 is a block diagram showing a schematic configuration of an ultrasonic operation system including a fourth embodiment of the present invention.

[Explanation of symbols]

1 ... Ultrasonic surgery system 2 ... Generator 3 ... Foot switch 4, 5 ... Handpiece 7 ... Connector 8a, 8b ... probe 9a, 9b ... sheath 11 ... Puncture probe 12a, 14a, 14b ... Mantle tube 13a, 13b ... Dilator 21 ... Case 22 ... Ultrasonic transducer 26 ... Piezoelectric element 28 ... Timer unit 36 ... Drive current detection circuit 37 ... Timer control circuit 38 ... Switch circuit

Claims (3)

[Claims] 1. An ultrasonic treatment instrument which is detachably connected to a generator and has an ultrasonic transducer for converting a drive current from the generator into ultrasonic vibration. The ultrasonic treatment instrument has a built-in timer unit. An ultrasonic treatment tool characterized by the above. 2. The ultrasonic treatment instrument according to claim 1, wherein the timer unit is provided in a part of a drive current supply system before reaching the ultrasonic oscillator and is operated by input of the drive current. . 3. The ultrasonic treatment instrument has one end detachably connected to the generator, and a cable portion for transmitting a drive current from the generator, and the other end of the cable portion is detachably attachable to a rear end thereof. Connected to the ultrasonic treatment instrument body, which is detachably connected to a front end of the ultrasonic treatment instrument body having the ultrasonic transducer incorporated therein, and a plurality of types can be selectively connected depending on the treatment purpose. The ultrasonic treatment instrument according to claim 1, comprising a probe portion and an adapter which is insertable between the cable portion and the ultrasonic treatment instrument main body and has the timer unit built therein.