JPH06209949A - Ultrasonic therapeutic instrument - Google Patents

Abstract

PURPOSE:To obtain the proper suction pressure according to the situation and improve the operation performance. CONSTITUTION:Suction pressure adjusting valves 24a and 24b for varying the suction force of a suction unit 21 are installed, and an input signal judging circuit 28 for selecting the first suction function for suction-removing the body liquid stored in the broken or emulsified tissue or in the body cavity from a suction port, interlocked with the ultrasonic oscillation operation, and the second suction function for the suction from the suction port by the suction force different from the suction force due to the first suction function, independently of the ultrasonic oscillation operation is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic therapeutic device for transmitting ultrasonic vibration to a tissue in a body cavity to ablate it.

[0002]

2. Description of the Related Art Generally, there is known an ultrasonic therapeutic apparatus for transmitting ultrasonic vibration to a tissue in a body cavity and cutting it. As shown in FIG. 5, the ultrasonic treatment apparatus is provided with a handpiece 1 and a power supply side control unit 2.

Further, the handpiece 1 is provided with a grip portion 3 in which an ultrasonic vibrator (not shown) is built in, and a probe 4 for transmitting the ultrasonic vibration generated by the ultrasonic vibrator in the grip portion 3. Has been.

Further, a sheath 5 for covering the probe 4 is fixed to the tip of the grip portion 3 except for the tip portion which is a treatment portion. The sheath 5 covers the portion of the probe 4 other than the distal end portion serving as a treatment portion, thereby preventing the operator or the patient from accidentally touching the side surface of the probe 4.

Further, a suction passage 6 is provided inside the probe 4 and the vibrator so as to penetrate therethrough in the central axis direction. The base end of the suction passage 6 is connected to a suction pump 8 on the control unit 2 side via a suction tube 7.

Further, a pinch valve 9 is provided in the middle of the suction tube 7 to squeeze the suction tube 7 to cut off the suction flow path, and the suction operation is controlled in accordance with the opening / closing operation of the pinch valve 9. Has become.

A suction pressure setting unit 10, an oscillation circuit 11, a control circuit 12, and an ultrasonic output setting unit 13 are arranged in the control unit 2. In this case, the suction pressure setting unit 10 is connected to the suction pump 8, and the suction pressure setting unit 10 sets the suction pressure of the suction pump 8. Further, the oscillator circuit 11 is connected to the ultrasonic transducer in the handpiece 1 via the cord 14.

Further, the control circuit 12 has a pinch valve 9,
The oscillation circuit 11 and the ultrasonic output setting unit 13 are connected, and the foot switch 15 disposed outside the control unit 2 is also connected. The foot switch 15 is provided with an ultrasonic wave oscillating pedal 16 and a suction pedal 17.

When the operator operates the ultrasonic oscillation pedal 16 of the foot switch 15, an electric signal is sent from the oscillation circuit 11 of the control unit 2 to the ultrasonic transducer in the handpiece 1 through the cord 14. Further, the ultrasonic transducer converts this electric signal into mechanical vibration, and transmits the ultrasonic vibration to the probe 4 connected to the tip. In this state, by pressing the tip of the probe 4 against the affected tissue, the tissue is crushed by this ultrasonic vibration.

Further, the pinch valve 9 turns on the ultrasonic oscillation.
This pinch valve 9 is opened and closed in conjunction with the / OFF operation.
During the opening operation of the tissue, the tissue crushed by the ultrasonic vibration is sucked from the suction passage 6 inside the probe 4 and the transducer to the suction tube 7.
It passes through the inside and is collected by the suction pump 8 on the control unit 2 side.

Furthermore, by opening and closing the pinch valve 9 by operating the suction pedal 17 of the foot switch 15, the suction operation can be performed independently of the ON / OFF operation of ultrasonic oscillation.

When the ultrasonic treatment apparatus is used, the ultrasonic transducer in the handpiece 1 is driven and the pinch valve 9 is opened in conjunction with the ON operation of the ultrasonic oscillation, and the ultrasonic oscillation operation is stopped. Simultaneously with the start, the suction operation is started. In this case, the suction force at the time of ultrasonic oscillation is set to an appropriate value in advance by the suction pressure setting unit 10 according to the site to be treated and the procedure.

For example, when a large number of capillaries are provided in the affected area, the suction pressure is set low so that the capillaries are not sucked and damaged by the suction operation into the handpiece 1. Further, when used in laparoscopic surgery, the amount of suction is kept as low as possible in order to prevent the abdominal cavity gas in the abdominal cavity from being sucked by the suction operation into the handpiece 1 as much as possible.

On the other hand, when bleeding obstructs the field of view of the surgical site, or when a large amount of perfusate used for cleaning the abdominal cavity is sucked, it is desirable to suck a large amount of suction into the handpiece 1 at once. .

[0015]

However, in the above-mentioned conventional structure, the suction force at the time of ultrasonic oscillation is set to an appropriate value by the suction pressure setting section 10 according to the region to be treated and the procedure. The suction pressure of the suction pump 8 is always fixed at the value set by the suction pressure setting unit 10. That is,
When operating the ultrasonic oscillation pedal 16 of the foot switch 15 or operating the suction pedal 17, the pinch valve 9 is simply opened and closed in conjunction with the operation of the foot switch 15 at that time, so that the suction pressure is always kept at the suction pressure setting unit. The set value set in 10 is kept constant.

Therefore, when the set value of the suction pressure set by the suction pressure setting unit 10 is set to a low suction pressure suitable for ultrasonic oscillation, high-speed suction is performed even in a situation where high-speed suction is required. There is a problem that cannot be done.

Further, in order to obtain an appropriate suction pressure according to the situation, a troublesome operation of changing the setting of the suction pressure setting section 10 is required each time, so that the appropriate suction pressure is obtained according to the situation. There is a problem of poor operability.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain an ultrasonic therapeutic apparatus capable of obtaining an appropriate suction pressure according to the situation and improving its operability. To provide.

[0019]

According to the present invention, ultrasonic vibration generated by ultrasonic wave oscillating means is transmitted to a probe, and the tip of the probe is brought into contact with a living tissue.
In an ultrasonic treatment apparatus that crushes or emulsifies biological tissue and includes suction means that communicates with a suction port arranged near the tip of the probe, suction force adjusting means that changes the suction force of the suction means is provided. Along with the operation of the ultrasonic oscillating means, the first suction function of sucking and removing the crushed or emulsified tissue or the body fluid stored in the body cavity from the suction port is independent of the ultrasonic oscillating means. And a switching means for switching between a second suction function of sucking from the suction port with a suction force different from the suction force of the first suction function.

[0020]

When the ultrasonic wave oscillating means is operated, the crushed or emulsified tissue or the body fluid stored in the body cavity is sucked and removed from the suction port by the first suction function linked with the operation of the ultrasonic wave oscillating means. When the ultrasonic oscillating means is not operating, the switching means switches to the second suction function which operates independently of the ultrasonic oscillating means.
With this suction function, the suction force is different from the suction force of the first suction function.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same parts as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. In the ultrasonic treatment apparatus of this embodiment, the suction tube 7 connected to the handpiece 1
The base end portion of is passed through the pinch valve 9 provided in the control unit 2 and is connected to the suction bin 22 of the suction unit (suction means) 21. The suction bottle 22 is connected to a vacuum pump 21A as a suction source via a connecting tube 23.

Then, the tissue, body fluid, perfusate and the like crushed by the ultrasonic vibration sucked into the suction passage 6 of the handpiece 1 are stored in the suction bottle 22 from the suction passage 6 through the suction tube 7. It is like this.

Further, at the middle of the connecting tube 23, the base end portions of the suction pressure adjusting conduits 23a and 23b which are branched in a bifurcated shape are connected. Suction pressure adjusting valves (suction force adjusting means) 24a, 24b for adjusting the suction pressure to change the suction force are provided at the tip ends of the suction pressure adjusting pipelines 23a, 23b, respectively.

Further, the suction unit 21 is provided with a valve control circuit 25, a priority suction signal circuit 26, and a suction pressure setting section 27. In this case, the valve control circuit 2
The suction pressure adjusting valves 24a and 24b, the priority suction signal circuit 26, and the suction pressure setting unit 27 are connected to the valve 5, respectively. Then, the suction pressure setting unit 27 or the priority suction signal circuit 26
The valve control circuit 25 controls the suction pressure adjusting valves 24a and 24b in the suction pressure adjusting pipes 23a and 23b in accordance with the input from
The opening / closing operation of the suction pressure adjusting valves 24a, 24 is controlled.
With the opening / closing operation of b, the suction pressure of the suction unit 21 is adjusted to an appropriate set value.

Further, 28 is an input signal discrimination circuit (switching means). An external foot switch 15 is connected to the input signal discriminating circuit 28, and an ultrasonic wave control circuit 29, a pinch valve control circuit 30, and a communication circuit 31 in the control unit 2 are connected to the input signal discrimination circuit 28.
The communication circuit 31 is connected to a priority suction signal circuit 26 in the suction unit 21 via a communication cable 32.

Further, the ultrasonic wave control circuit 29 is connected to the ultrasonic wave output setting section 33 and the oscillation circuit 11. Further, the pinch valve 9 is connected to the pinch valve control circuit 30.

The valve control circuit 25 is connected to the communication circuit 31 via the communication cable 23 via the priority suction signal circuit 26, and the ultrasonic oscillation pedal 16 of the foot switch 15 discriminated by the input signal discrimination circuit 28 and The ON / OFF information of the suction pedal 17 is the valve control circuit 2
It is sent to the 5 side.

Here, when the ON information of the pedal 16 on which the ultrasonic oscillating pedal 16 of the foot switch 15 is stepped on is sent to the valve control circuit 25 side, the suction pressure setting section 27 sets the suction pressure. Suction pressure adjusting valve 24 according to the value
The opening and closing of a and 24b are controlled. That is, the crushed or emulsified tissue or the body fluid stored in the body cavity is interlocked with the operation of the ultrasonic transducer in the handpiece 1 by the suction pressure set in the suction pressure setting unit 27 from the suction port of the probe 4. The suction unit 21 is driven by the first suction function of suction removal.

Further, the suction pedal 1 of the foot switch 15
ON information of the pedal 17 when 7 is depressed is the valve control circuit 2
When sent to the No. 5 side, regardless of the set value of the suction pressure setting unit 27, a predetermined suction pressure preset by the priority suction signal circuit 26 (for example, suction pressure adjusting valves 24a, 24
Maximum of 100% of suction pressure adjustment range by opening / closing operation of b
The opening and closing of the suction pressure adjusting valves 24a and 24b are controlled so that the suction pressure is adjusted to (1). That is, it operates independently of the ultrasonic transducer in the handpiece 1 and is switched to the second suction function of suctioning from the suction port of the probe 4 with a suction force different from the suction force of the first suction function. The suction unit 21 is driven in this state. It should be noted that the suction pressure of the second suction function is not a constant value and may be changeable by providing a second suction pressure setting unit.

Therefore, in the structure described above, when the ultrasonic oscillation pedal 16 of the foot switch 15 is operated for ultrasonic oscillation, the suction pressure is adjusted in accordance with the set value of the suction pressure set in the suction pressure setting section 27. The opening and closing of the valves 24a and 24b are controlled. Therefore, since the suction unit 21 is driven by the first suction function in conjunction with the operation of the ultrasonic transducer in the handpiece 1, the suction of the probe 4 is performed by the suction pressure set in the suction pressure setting unit 27 in advance. The crushed or emulsified tissue or body fluid stored in the body cavity is sucked and removed from the mouth.

Further, the suction pedal 1 of the foot switch 15
When 7 is operated, this operation is the input signal discrimination circuit 2
8, the suction unit 21 is driven in a state where the suction unit 21 is switched to the second suction function that operates independently of the operation of the ultrasonic transducer in the handpiece 1. It is possible to suck from the suction port of the probe 4 with a suction force different from the suction force of the suction function of 1.

Therefore, the suction unit automatically obtains independent suction force during the ultrasonic oscillation when the ultrasonic oscillation pedal 16 of the foot switch 15 is operated and during the single suction operation when the suction pedal 17 is operated. 21 can be controlled, so that the operator can perform the suction operation with the optimum suction force according to each situation without paying particular attention to the setting state of the suction force, and the operation proceeds smoothly. be able to.

FIG. 2 shows a second embodiment of the present invention. This is provided with a suction unit (suction means) 40 having a configuration different from that of the first embodiment. That is, the suction unit 40 of this embodiment is provided with the roller pump (suction force adjusting means) 41.

The suction side of the roller pump 41 is connected to the base end of the suction tube 7 connected to the handpiece 1. Further, a suction bottle 42 is connected to the discharge side of the roller pump 41 via a connecting tube. The suction amount of the suction unit 40 is adjusted by the rotation speed of the roller pump 41.

Further, the suction unit 40 is provided with a roller pump control circuit 43. The roller pump control circuit 43 includes a first suction pressure setting unit 44 that sets a suction amount in the first suction function during ultrasonic oscillation, and a suction amount in the second suction function other than during ultrasonic oscillation. The second suction pressure setting unit 45 to be set and the suction signal selection circuit 46 are connected to each other.

Further, the suction signal selection circuit 46 is connected to the communication circuit 31 on the input signal discrimination circuit 28 side via the communication cable 32.
It is connected to the. Then, the ultrasonic oscillation pedal 16 of the foot switch 15 and the suction pedal 17 are turned on / off.
Information is sent to the roller pump control circuit 43 side through the input signal determination circuit 28, the communication circuit 31, the communication cable 32, and the suction signal selection circuit 46 in this order. The control unit 2 and the suction unit 40 may be integrally provided, and the communication cable 32 may be internally wired.

Here, when the ON information of the pedal 16 on which the ultrasonic oscillation pedal 16 of the foot switch 15 is depressed is sent to the roller pump control circuit 43 side, it is set in the first suction pressure setting section 44. The rotation speed of the roller pump 41 is controlled according to the set value of the suction pressure. That is, the crushed or emulsified tissue or the body fluid stored in the body cavity is set in the first suction pressure setting unit 44 from the suction port of the probe 4 in association with the operation of the ultrasonic transducer in the handpiece 1. The suction unit 40 is driven by the first suction function of sucking and removing with suction pressure.

Further, the suction pedal 1 of the foot switch 15
When the ON information of the pedal 17 when 7 is stepped on is sent to the roller pump control circuit 43 side, the second suction pressure setting unit 4
The rotation speed of the roller pump 41 is controlled according to the set value of the suction pressure set to 5. That is, it operates independently of the ultrasonic transducer in the handpiece 1 and is switched to the second suction function of suctioning from the suction port of the probe 4 with a suction force different from the suction force of the first suction function. The suction unit 40 is driven in this state. The second suction pressure setting unit 45 may not be provided specially, and the roller pump 41 may be operated at a preset constant number of rotations. Further, when the foot switch 15 is not stepped on, the roller pump 41
Is stopped, the pinch valve 9 is used as in the first embodiment.
It is not necessary to block the suction path with.

Therefore, even in the case of the above-described structure, as in the first embodiment, the ultrasonic oscillation pedal 16 of the foot switch 15 is operated during ultrasonic oscillation and the suction pedal 17 is operated during single suction. Since the suction unit 40 can be automatically controlled so that independent suction forces can be obtained, the operator does not have to pay particular attention to the setting state of the suction force, and is optimal for each situation. The suction operation can be performed by the suction force, and the surgery can be smoothly performed.

3 and 4 show the third embodiment of the present invention. This is because the ultrasonic vibrator built in the handpiece 1 generates ultrasonic vibration of low amplitude when the suction pedal 17 of the foot switch 15 is depressed.
By transmitting this low-amplitude ultrasonic vibration to the probe 4, the probe 4 is ultrasonically vibrated at a low amplitude, and at the same time, the suction unit 21 performs suction with a predetermined suction force of the second suction function. It is a thing.

That is, for example, in the ultrasonic therapy apparatus of the first embodiment shown in FIG. 1, the suction pedal 17 of the foot switch 15 is used.
When an ON signal is received from the ultrasonic control circuit 29, an output of a low-amplitude ultrasonic vibration determined in advance regardless of the setting value of the ultrasonic output setting unit 33 (for example, 10% of the maximum output of the ultrasonic transducer). Control signal of the output)
Sent to.

The low-output electric signal generated by the oscillation circuit 11 passes through the cord 14 and is sent to the ultrasonic transducer incorporated in the handpiece 1. Further, this electric signal is converted into a low-amplitude ultrasonic vibration by the ultrasonic vibrator and transmitted to the probe 4. At the same time, the suction unit 21 performs suction with a predetermined suction force of the second suction function, the pinch valve 9 is opened, and the suction force acts on the suction tube 7 and the suction passage 6 connected thereto.

Therefore, in the vicinity of the suction port at the tip of the handpiece 1, the second suction function is performed from the suction passage 6, and at the same time, the probe 4 vibrates ultrasonically with a low amplitude.
As shown in FIG. 4, when a perfusate used for washing the inside of the body cavity or a body fluid 53 accumulated between the tissues 51 in the body cavity is sucked, a soft tissue 52 such as fat in the living tissue 51 is introduced into the suction port of the probe 4. Even if the soft tissue 52 is sucked, there is no possibility that the soft tissue 52 will come into close contact with the opening of the distal end of the suction passage 6 and block it.

Since the probe 4 forming the suction passage 6 is constantly vibrating, the blood clot 5 coagulated and increased in viscosity is obtained.
It is possible to prevent the blood clot 54, the tissue piece, and the like from being clogged in the suction passage 6 when the 4, the tissue piece, and the like are sucked into the suction passage 6 together with the body fluid 53.

As shown in FIG. 4, the ultrasonic vibration 62 of low amplitude of the probe 4 during the suction operation by the second suction function is performed.
Is a probe 4 generated when ultrasonic waves are generated when cutting tissue
Since it is sufficiently lower than the amplitude of the ultrasonic vibration 61, there is no possibility of damaging the tissue even when the tissue hits the probe 4.

Further, the vibration of the probe 4 during suction by the second suction function may be a triangular wave, a rectangular wave, or a pulse wave instead of the sine wave shown in FIG. Further, the ultrasonic vibration of the probe 4 at the time of suction by the second suction function is not fixed to a constant set value of amplitude, and by providing the second ultrasonic output setting unit, the ultrasonic vibration The magnitude of the amplitude may be changeable.

Therefore, in the above-mentioned configuration, the probe 4 vibrates at the amplitude set by the ultrasonic output setting section 33 during the ultrasonic oscillation for cutting the tissue, and the tissue is sucked during the suction by the second suction function. Since the probe 4 can be automatically vibrated by the independent low-amplitude ultrasonic vibration 62 whose amplitude is sufficiently smaller than the set value of the ultrasonic output at the time of ultrasonic oscillation at the time of excision, the operator can It is possible to selectively use ultrasonic oscillation and suction without worrying about the output setting.

Further, since the tissue is not sucked into or clogging the suction passage 6 during the suction by the second suction function, a troublesome work such as interrupting the suction operation to remove the clogging in the suction passage 6 is required. Surgery can proceed smoothly without the need. It should be noted that the present invention is not limited to the above-mentioned embodiments, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

[0049]

According to the present invention, the suction force adjusting means for changing the suction force of the suction means is provided, and the crushed or emulsified tissue or the body fluid stored in the body cavity is interlocked with the operation of the ultrasonic wave oscillating means. The first suction function for sucking and removing the air from the suction port and the ultrasonic wave oscillating means operate independently,
Since the switching means for switching between the second suction function of sucking from the suction port with the suction force different from the suction force of the first suction function is provided, it is possible to obtain an appropriate suction pressure according to the situation and The operability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an entire apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an entire apparatus according to a second embodiment of the present invention.

FIG. 3 is a schematic configuration diagram for explaining the operation during ultrasonic oscillation of the third embodiment of the present invention.

FIG. 4 is a characteristic diagram showing changes in the amplitude of the probe during ultrasonic oscillation.

FIG. 5 is a schematic configuration diagram of an entire conventional ultrasonic therapy device.

[Explanation of symbols]

4 ... Probe, 21, 40 ... Suction unit (suction means), 24a, 24b ... Suction pressure adjusting valve (suction force adjusting means), 28 ... Input signal discrimination circuit (switching means), 41 ...
Roller pump (suction force adjustment means).

Claims (1)

[Claims] 1. The ultrasonic vibration generated by the ultrasonic wave oscillating means is transmitted to a probe, and the tip of the probe is brought into contact with the living tissue to crush or emulsify the living tissue and the vicinity of the tip of the probe. In an ultrasonic treatment apparatus having suction means communicating with the suction port arranged at, suction force adjusting means for changing the suction force of the suction means is provided, and the ultrasonic wave oscillating means is operated in association with the crushing. Alternatively, the first suction function for sucking and removing the emulsified tissue or the body fluid stored in the body cavity from the suction port and the ultrasonic wave oscillating means operate independently, and the suction force by the first suction function. An ultrasonic therapeutic apparatus comprising switching means for switching between a second suction function of suctioning from the suction port with a suction force different from the above.