JP2002355255A - Ultrasonic operation unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic operation unit which can automatically reproduce a water supply initially set by an operator corresponding to ultrasonic setting securing the minimum (recommended) water supply to suppress heat generation of a probe. SOLUTION: This ultrasonic operation unit 1 is to operate an organism by ultrasonic vibration and is equipped with a setting means 4 to set an ultrasonic output and a water supply and a control means 2 to store the track of the water supply setting set by the setting means 4 based on the stored track of the water supply upon setting the ultrasonic setting by the setting means 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic surgical apparatus for crushing and emulsifying a living tissue by ultrasonic vibration while supplying water, and more particularly to an ultrasonic surgical apparatus with improved water supply control.

[0002]

2. Description of the Related Art Ultrasonic vibration is transmitted to the tip of a probe,
Ultrasound surgical devices that crush or emulsify the affected tissue by removing the probe by bringing the tip of the probe into contact with the affected tissue are conventionally known. For example, Japanese Unexamined Patent Publication No. Hei 5-23347 discloses an ultrasonic wave system which includes an ultrasonic output unit, a water supply unit, and a suction unit, and is system-controlled so that the water supply unit and the suction unit operate in synchronization with the ultrasonic output. A surgical device is disclosed.

In an ultrasonic surgical apparatus, water is supplied not only to clean tissue but also to suppress heat generation due to stress by a probe that vibrates ultrasonically.
Further, since the stress is proportional to the ultrasonic output value, the required water supply amount also changes. Therefore, it is important to control the amount of water supply according to the ultrasonic output value to prevent the probe from generating heat. For this reason, Japanese Unexamined Patent Publication No. Hei 6-38973 discloses an ultrasonic surgical apparatus which has the basic configuration of Japanese Unexamined Patent Publication No. Hei 5-23347 and controls the amount of water supply according to the ultrasonic output value. In this ultrasonic surgical apparatus, it is determined whether the set water supply amount is larger or smaller than the minimum water supply amount (recommended water supply amount) corresponding to the ultrasonic output. If the set water supply amount is larger, the set water supply amount is valid. The amount of water is set as the set amount of water.

[0004]

When it is desired to perform a careful procedure in the operation using the ultrasonic surgical apparatus, the operator needs to send the probe in order to minimize the heat generation of the probe and minimize the tissue degeneration. Set a larger amount of water. In this case, the set flow rate generally does not match the recommended flow rate of the device. In addition, the ultrasonic output value may be set low in order to perform careful treatment. On the other hand, depending on the stage of treatment,
Some parts do not need to be very conservative. In such a case, the operator sets the ultrasonic output value to be large,
Water flow is often set to the lowest (recommended) value. As described above, the surgeon arbitrarily sets the ultrasonic output value and the amount of water supply according to the part to be treated, and performs a desired treatment.

In the situation where such a treatment form is generally performed, if the automatic water supply setting control disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-38973 is used, initially, the ultrasonic set value is small and the water supply set value is small. Take great care,
Thereafter, when changing to a treatment in which the ultrasonic setting value is large and the water supply amount is the minimum (recommended) value, the water supply setting value automatically changes according to the ultrasonic setting. Without having to do the surgery, you can concentrate on the surgery, but then again, if you reduce the ultrasound setting to return to the original careful treatment, the small ultrasound Minimum according to set value (recommended)
Since the water supply amount is automatically changed, the operator has to change the set water supply amount to a desired value again. In this,
The operation becomes complicated and there is a problem in terms of the operation efficiency.

The present invention has been made in view of the above circumstances, and an object thereof is to secure the minimum (recommended) water supply amount for suppressing the heat generation of the probe and to adjust the water supply amount according to the ultrasonic setting. Another object of the present invention is to provide an ultrasonic surgical apparatus capable of automatically reproducing a set water supply amount initially set by an operator.

[0007]

In order to solve the above-mentioned problems, the present invention provides an ultrasonic surgical apparatus for treating a living body by ultrasonic vibration, comprising: setting means for setting an ultrasonic output value and a water supply amount. And control means for storing a setting trajectory of the water supply setting by the setting means and automatically setting a water supply amount based on the stored trajectory of the water supply setting when setting the ultrasonic output by the setting means. It is characterized by.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of an ultrasonic operation apparatus 1 according to an embodiment of the present invention. As shown in the figure, the ultrasonic surgical apparatus 1 includes a handpiece 12 having a probe for crushing and emulsifying living tissue, and an operation (setting) for setting and displaying a water supply amount, an ultrasonic output value, and the like. A display unit (setting means) 4 and an ultrasonic output unit 6 for outputting ultrasonic waves transmitted to the probe of the handpiece 12
A water supply unit 8 for supplying cooling water to the handpiece 12 for cooling the probe and cleaning the treatment unit;
A suction unit 10 for sucking the cooling water introduced into the body from the water supply unit 8 together with the treated diseased tissue, and a central control unit (control means) for controlling the driving of these operation units 4, 6, 8, and 10 ) 2).

In this case, the ultrasonic output unit 6 is connected to the handpiece 12 via an ultrasonic cable 16 for transmitting ultrasonic waves. Further, the water supply unit 8 is connected to the handpiece 12 via a water supply tube 18.
The suction unit 10 is connected to the handpiece 12 via a suction tube 20.

The central control unit 2 has an ultrasonic output unit 6
And a foot switch 14 for turning on / off the water supply unit 8 and the suction unit 10 is electrically connected. When an ON / OFF signal of the foot switch 14 is sent to the central control unit 2, the central control unit 2 controls ON / OFF of the ultrasonic output unit 6, the water supply unit 8, and the suction unit 10. In the present embodiment, when the foot switch 14 is depressed, ultrasonic waves are output from the ultrasonic output unit 6, and the water supply unit 8 and the suction unit 10 operate in synchronization with the output. In the operation (setting) / display unit 4,
In addition to the water supply amount and the ultrasonic output value, a suction level and the like can be set.

FIG. 2 shows an example of the relationship between the set output value of ultrasonic waves (ultrasonic set value) and the minimum (recommended) water supply amount in the ultrasonic surgical apparatus 1 of the present embodiment. In this example,
For simplicity, the ultrasonic set value and the minimum (recommended) water supply have a direct proportional relationship. That is, as shown by the upward-sloping straight line in FIG. 2, when the ultrasonic set value is increased, the minimum (recommended) water supply amount for preventing heat generation of the probe also increases. Note that the proportional coefficient in this case differs depending on the handpiece 12 used.

Further, in the ultrasonic surgical apparatus 1 according to the present embodiment, the operator can set the water supply amount only in the dot region R shown in FIG. That is, the central control unit 2
Restricts the setting range of the water supply amount by the operation (setting) / display unit 4 according to the recommended water supply amount specified by the ultrasonic setting. Note that the region R differs depending on the handpiece 12 used. Normally, the type of the handpiece 12 is determined by detecting an identification resistor (not shown) built in the handpiece 12, and the water supply setting possible region R corresponding to the type is secured.

Next, an example of a control program for storing and reproducing the amount of water supply set by the operator in the water supply settable area R will be described with reference to the flowcharts of FIGS. In this example of the control program, for the sake of simplicity, the water supply amount and the ultrasonic output value can be set in increments of 5%.

FIG. 3 is a flow chart mainly when the setting of the water supply amount is changed. In this control flow, when the ultrasonic surgical apparatus 1 is operated, this processing (subroutine) is called from a main routine of a program sequentially executed by the central control unit 2. Then, as shown in the figure, it is determined whether or not the setting (water supply setting) of the water supply amount has been changed on the operation (setting) / display unit 4 (step S1). If the water supply setting has not been changed, the process proceeds to step A described later.
If the water supply setting has been changed, it is next determined whether or not the water supply setting up switch for increasing the set water supply amount has been depressed (step S2). If the water supply setting up switch has not been pressed down, that is, if the water supply setting down switch for reducing the set water supply amount has been pressed down, the process proceeds to step B described later. On the other hand, when the water supply setting up switch is depressed, the water supply setting value is increased by 5%, and the value is input to a variable called SAVE (step S3), and then 0 is substituted for a variable FLG ( Step S4), proceed to step A.

Here, "FLG" is a variable for determining whether or not the set water supply amount is the minimum (recommended) water supply amount specified by the ultrasonic setting, and the set water supply amount is the minimum (recommended).
In the case of the water supply amount, FLG = 1, and when the set water supply amount is not the minimum (recommended) water supply amount, FLG = 0. Further, "SAVE" is a variable indicating the value of the setting water amount immediately before the lowest (recommended) water quantity defined by the ultrasound setting, "IRR _{m in"} the lowest defined by ultrasound settings (Recommended) This variable indicates the amount of water supply.

FIG. 4 is a flowchart of step A mainly when the setting of the ultrasonic output value is changed. In this control flow, first, it is determined whether or not the setting of the ultrasonic output value (ultrasonic setting) has been changed on the operation (setting) / display unit 4 (step S5). If the ultrasonic setting has not been changed, the process proceeds to step D and ends (see FIG. 6). If the ultrasonic setting has been changed, then the ultrasonic setting up switch for increasing the ultrasonic setting output value is depressed or the ultrasonic setting switch for decreasing the ultrasonic setting output value is decreased. It is determined whether the sound wave setting down switch has been pressed down (step S6). When the ultrasonic setting down switch is depressed, the process proceeds to step C described later. On the other hand, when the ultrasonic setting up switch is pressed down, the ultrasonic output setting value is increased by 5% (step S).
7) Accordingly, the IRR _min using the ultrasonic output set value as a parameter is also updated (increased). Next, the set water supply amount (water supply set value) is compared with IRR _min (step S8), and when water supply set value ≧ IRR _min , the process proceeds to step D and ends (see FIG. 6). on the other hand,
When the water supply set value <IRR _min , firstly, FLG
Is determined (step S9), and if FLG = 0, the water supply set value is stored in SAVE (step S1).
0), if FLG = 1, IRR _min is set as the set water supply amount without storing the water supply set value (step S1).
1) Then, the process proceeds to step D and ends (see FIG. 6).

FIG. 5 is a flowchart of step B when the water supply setting down switch is depressed. In this control flow, first, it is determined whether or not FLG is 0 (step S12). When FLG = 1, step A
Proceed to. That is, since the water supply amount is already the minimum (recommended), the setting cannot be further reduced. Also,
When FLG = 0, next, the value obtained by reducing the water supply set value by 5% is compared with IRR _min (Step S13), and if they are equal, 1 is substituted for FLG (Step S14),
After that, (water supply set value-5%) is set as the water supply set value and SA
The result is stored in the VE (step S15), and the process proceeds to step A. In addition, the water supply set value (water supply set value-5
If (%) is not equal to IRR _min , the FLG is left as it is, ((water supply set value−5%)) is stored in SAVE as a water supply set value (step S15), and the process proceeds to step A.

FIG. 6 is a flowchart of step C when the ultrasonic setting down switch is depressed. In this control flow, first, the ultrasonic output setting value is set to 5%.
Then, it is determined whether or not FLG is 1 (step S17). Then, when FLG is 1, that is, when the minimum (recommended) water supply state is already set, the minimum (recommended) water supply IRR specified by the ultrasonic setting is set.
_Min is set as the water supply set amount (step S18), and the process ends. On the other hand, when FLG is 0, the value of the variable SAVE is compared with the value of the variable IRR _min (step S19).
When SAVE> IRR _min , the value of SAVE is set as the water supply set amount (step S20), and the process ends. When SAVE ≦ IRR _min , the value of IRR _min is set as the water supply set amount (step S21), and the process ends.

The above control flow is entirely performed by the central control unit 2.

Next, a specific example of water supply setting using the control flows of FIGS. 3 to 6 will be described with reference to FIG.
In FIG. 7, a straight line rising to the right indicates the minimum (recommended) water supply amount of the ultrasonic surgical apparatus 1 according to the present embodiment. Arrows in FIG. 7 indicate a setting change path. FIG. 7A shows a change locus when the setting is increased, and FIG. 7B shows a change locus when the setting is decreased after the setting is increased in FIG. 7A. I have.

As shown in FIG. 7 (a), in this specific example, first, the set water supply amount is increased twice by 5% from one point X having the minimum (recommended) water supply amount, and then the set water supply amount is increased. While maintaining this, the set output value of the ultrasonic wave is increased twice by 5%. This state is indicated by a point Y in FIG. This point Y
Then, the set water supply amount F and the minimum (recommended) water supply amount according to the ultrasonic setting are the same. The set water supply amount F at this time has already been stored in SAVE in steps S3 and S10 of the control flow described above. Even when the change of the water supply setting follows another changed route within the water supply setting possible area R, the set water supply amount F immediately before reaching the minimum (recommended) water supply amount is determined in steps S3, 10, and
At 15 and 20, it is stored in the SAVE.

Next, the output set value of the ultrasonic wave is set to 5% from the point Y.
Increase by one. Set the output value of the ultrasonic wave from point Y to 5
Since the set water supply amount F is lower than the minimum (recommended) water supply amount at the time of increasing by%, 0 is substituted for FLG (see step S9 in FIG. 4). Thereafter, as the output set value of the ultrasonic wave is increased, the set water supply amount changes while being coincident with the minimum (recommended) water supply amount.

After increasing the ultrasonic output setting value up to the point Z, and then decreasing the ultrasonic output setting value from the point Z, the minimum (recommended) water supply amount also decreases. The set water supply rate is also reduced to match Then, when the set water supply amount reaches a point Y that coincides with SAVE, thereafter, even if the set output value of the ultrasonic wave is reduced, the set water supply amount does not change while maintaining the SAVE amount F. That is, the water supply amount F set by the operator at the beginning of the operation is reproduced.

As described above, the ultrasonic surgical apparatus 1 according to the present embodiment has the operation (setting) display unit 4 for setting the ultrasonic output value and the water supply amount, and the water supply by the operation (setting) display unit 4. A central control unit for storing a set trajectory of the setting and automatically setting a water supply amount based on the stored trajectory of the water supply setting when the ultrasonic output is set by the operation (setting) display unit; . And the central control unit 2
The value of the set water supply amount immediately before reaching the recommended water supply amount specified by the ultrasonic setting is stored, and the water supply amount automatically set at the time of setting the ultrasonic output is controlled so as not to be less than the stored set water supply amount. Moreover, when the central control unit 2 limits the setting range of the water supply amount by the operation (setting) display unit 4 by the recommended water supply amount specified by the ultrasonic setting and changes the setting of the ultrasonic output value, The set water supply amount is automatically changed according to the changed ultrasonic output value. Therefore, the minimum (recommended) water supply amount for suppressing the heat generation of the probe can be secured, and the water supply amount initially set by the operator can be automatically reproduced according to the ultrasonic setting.

That is, when careful treatment is performed with a small ultrasonic set value and a large water supply set value, and thereafter, a change is made to a treatment with a large ultrasonic set value and a minimum (recommended) water supply amount, Since the water supply setting value automatically changes in accordance with the ultrasonic setting, the operator can concentrate on the operation without performing any setting operation. Also, if you subsequently reduce the ultrasound settings to return to the original, careful treatment,
At least the initially obtained large water flow is automatically maintained, so that the operator does not need to change the set water flow to the desired value again. Therefore, the operation burden on the operator is reduced,
Surgery efficiency is increased.

According to the technical contents described above, various configurations as described below can be obtained.

1. In an ultrasonic surgical apparatus having an ultrasonic output setting means and a water supply setting means, a means for storing an operation trace of the water supply setting, a means for reading the water supply setting from the storage means, and an automatic setting of the water supply setting based on the read information. And a means for performing the operation.

2. In an ultrasonic surgical apparatus having an ultrasonic output setting unit and a water supply setting unit, a water supply setting unit whose setting range is limited by a minimum water supply amount according to the ultrasonic output setting, and when the ultrasonic output setting is changed, An ultrasonic surgical apparatus wherein the water supply setting automatically changes according to the ultrasonic output setting.

3. In an ultrasonic surgical apparatus including an ultrasonic output setting unit and a water supply setting unit, a unit for storing a relationship between the ultrasonic output setting and the water supply setting is provided, and when the ultrasonic output setting is changed, the water supply setting is changed by the storage unit. An ultrasonic surgical device characterized by changing.

[0031]

As described above, according to the ultrasonic surgical apparatus of the present invention, the minimum (recommended) water supply for suppressing the heat generation of the probe is ensured, and the operator can be operated in accordance with the ultrasonic setting. Can automatically reproduce the originally set water supply amount.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an ultrasonic surgical apparatus according to an embodiment of the present invention.

FIG. 2 is a graph showing an example of a relationship between a set output value (ultrasonic set value) of an ultrasonic wave and a minimum (recommended) water supply amount in the ultrasonic surgical apparatus in FIG.

FIG. 3 is a flowchart mainly when a setting of a water supply amount is changed.

FIG. 4 is a flowchart mainly when the setting of an ultrasonic output value is changed.

FIG. 5 is a flowchart when a water supply setting down switch is depressed.

FIG. 6 is a flowchart when the ultrasonic setting down switch is depressed.

FIG. 7 is a graph showing a specific example of water supply setting using the control flows of FIGS. 3 to 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ultrasonic surgery apparatus 2 ... Central control part (control means) 4 ... Operation (setting) display part (setting means)

Claims (3)

[Claims] 1. An ultrasonic surgical apparatus for treating a living body by ultrasonic vibration, comprising: setting means for setting an ultrasonic output value and a water supply amount; and storing a setting trajectory of water supply setting by the setting means; Control means for automatically setting the amount of water supply based on the trajectory of the stored water supply setting when setting the ultrasonic output by the setting means. 2. The control device according to claim 1, wherein the control unit stores a value of a set water supply amount immediately before a recommended water supply amount specified by an ultrasonic setting, and stores the water supply amount automatically set at the time of setting the ultrasonic output. The ultrasonic surgical apparatus according to claim 1, wherein the amount is not less than the water amount. 3. The control means restricts a setting range of the water supply amount by the setting means according to a recommended water supply amount specified by an ultrasonic setting, and when the setting of the ultrasonic output value is changed, the change is made. The ultrasonic surgical apparatus according to claim 1 or 2, wherein the set water supply amount is automatically changed according to the ultrasonic output value.