JP4331419B2 - Ultrasonic surgical device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultrasonic surgical apparatus that performs crushing and emulsification of a biological tissue by ultrasonic vibration while supplying water, and more particularly to an ultrasonic surgical apparatus with improved water supply control.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an ultrasonic surgical apparatus that transmits ultrasonic vibrations to the tip of a probe and contacts the tip of the probe with an affected tissue to crush or emulsify the affected tissue and remove it by suction is conventionally known. For example, Japanese Patent Application Laid-Open No. 5-23347 discloses an ultrasonic wave that 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.
[0003]
By the way, in the ultrasonic surgical apparatus, water supply is performed not only for cleaning the tissue but also for suppressing heat generation due to stress with a probe that vibrates ultrasonically. Further, since the stress is proportional to the ultrasonic output value, the amount of water necessary for the change also changes. Therefore, it is important to prevent the probe from generating heat by controlling the amount of water supplied according to the ultrasonic output value. For this reason, Japanese Patent Laid-Open No. 6-38973 discloses an ultrasonic surgical apparatus that has the basic configuration of Japanese Patent Laid-Open No. 5-23347 and controls the amount of water supplied 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. The amount of water is set as the set amount of water.
[0004]
[Problems to be solved by the invention]
When it is desired to perform a careful treatment in the operation using the ultrasonic surgical apparatus, the operator sets a large amount of water supply in order to keep the fever of the probe low and minimize tissue degeneration. In this case, generally, the set water supply amount does not match the recommended water supply amount of the apparatus. Moreover, in order to perform careful treatment, the ultrasonic output value may be set low. On the other hand, depending on the stage of treatment, there are parts that do not require much care. In such a case, the surgeon often sets the ultrasonic output value large and sets the water supply amount to the minimum (recommended) value. Thus, the surgeon arbitrarily sets the ultrasonic output value and the water supply amount according to the site to be treated, and performs a desired treatment.
[0005]
Under the circumstances where such a treatment mode is generally performed, if the automatic water supply setting control disclosed in Japanese Patent Laid-Open No. 6-38973 described above is used, an ultrasonic setting value is initially small and a water supply set value is large. When the treatment is performed and then the treatment is changed to a treatment with a large ultrasonic set value and a minimum (recommended) water supply amount, the water supply set value automatically changes according to the ultrasonic setting. Can concentrate on the surgery without any setting operation, but if the ultrasound setting value is reduced again to return to the original careful treatment, it will not be automatically changed to the large amount of water obtained initially, Since the minimum (recommended) water supply amount corresponding to the small ultrasonic set value is automatically changed, the operator must change the set water supply amount to a desired value again. This complicates the operation and causes a problem in terms of surgical efficiency.
[0006]
The present invention has been made by paying attention to the above circumstances, and the object of the present invention is to ensure the minimum (recommended) water supply amount for suppressing the heat generation of the probe, and according to the ultrasonic setting, the operator. Is to provide an ultrasonic surgical apparatus that can automatically reproduce the set water supply amount initially set.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, in the ultrasonic surgical apparatus for treating a living body by ultrasonic vibration according to the present invention, an ultrasonic output value setting means for appropriately setting and changing the ultrasonic output value transmitted to the probe; A water supply amount setting means for setting a water supply amount for preventing heat generation of the probe, a recommended water supply amount defined in correspondence with an ultrasonic output value, and a set water supply amount set by the water supply amount setting means Control means for limiting the set water supply amount set by the water supply amount setting means to a recommended water supply amount or more based on the corresponding ultrasonic output value, and the control means includes the super the waves recommended water supply amount by the output value setting means increases the ultrasonic setting value set changed corresponding to the ultrasonic output value, which is stored in the storage means set by said water supply amount setting means From a state exceeding the constant water supply amount, when the small ultrasound settings when the recommended water amount corresponding to the ultrasonic setting values that decrease is equal to or less than the set water supply amount, thereby water the setting water volume It is characterized by.
In order to solve the above problem, in an ultrasonic surgical apparatus for treating a living body by ultrasonic vibration, an ultrasonic output value setting means for appropriately setting and changing an ultrasonic output value to be transmitted to a probe, A water supply amount setting means for setting a water supply amount for preventing heat generation, a recommended water supply amount defined in correspondence with the ultrasonic output value, and a set water supply amount set by the water supply amount setting means are stored. And a control means for limiting the set water supply amount set by the water supply amount setting means to a recommended water supply amount or more based on the corresponding ultrasonic output value, the control means comprising the water supply amount setting means Accordingly, once the set water supply amount is set, the recommended water amount corresponding to the ultrasonic output value by increasing the ultrasonic setting value set modified after the ultrasound output value setting means, the setting From a state where water amount exceeded, when a smaller ultrasound settings when the recommended water amount corresponding to the ultrasonic setting values that decrease is equal to or less than the set water supply amount, the setting water amount below the recommended water supply amount or more When the water supply amount is reduced by limiting the reduction of the water supply amount to the range, and the water supply amount is set again by the water supply amount setting means , the reset water supply amount is less than or equal to the reset water supply amount that is set again. It is characterized by restricting that the amount of water supply falls to the range.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0009]
FIG. 1 shows a schematic configuration of an ultrasonic surgical apparatus 1 according to an embodiment of the present invention. As shown in the figure, the ultrasonic surgical apparatus 1 has 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. Display unit (setting means) 4, ultrasonic output unit 6 that outputs ultrasonic waves transmitted to the probe of the handpiece 12, and cooling water for cooling the probe and cleaning the treatment unit to the handpiece 12 A water supply unit 8 for supplying, 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 driving of each of the operation units 4, 6, 8, 10 And a central control unit (control means) 2 for controlling.
[0010]
In this case, the ultrasonic output unit 6 is connected to the handpiece 12 via an ultrasonic cable 16 for transmitting ultrasonic waves. In addition, 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 the suction tube 20.
[0011]
The central control unit 2 is electrically connected to a foot switch 14 for turning on / off the ultrasonic output unit 6, the water supply unit 8, and the suction unit 10, and an ON / OFF signal of the foot switch 14 is provided. Is sent to the central control unit 2 so that the central control unit 2 performs ON / OFF control 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 pushed down, an ultrasonic wave is output from the ultrasonic wave output unit 6, and the water supply unit 8 and the suction unit 10 operate in synchronization with the output. The operation (setting) / display unit 4 can set the suction level and the like in addition to the water supply amount and the ultrasonic output value.
[0012]
FIG. 2 shows an example of the relationship between the ultrasonic set output value (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 amount have a direct proportional relationship. That is, as shown by a straight line rising to the right in FIG. 2, if the ultrasonic set value is increased, the minimum (recommended) water supply amount for preventing heat generation of the probe also increases. In this case, the proportionality coefficient varies depending on the handpiece 12 to be used.
[0013]
Further, in the ultrasonic surgical apparatus 1 of the present embodiment, the surgeon can set the water supply amount only in the dot region R shown in FIG. That is, 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 defined by the ultrasonic setting. The region R differs depending on the handpiece 12 to be used. Usually, the type of the handpiece 12 is determined by detecting an identification resistance (not shown) incorporated in the handpiece 12, and a water supply setting possible region R corresponding to the type is secured.
[0014]
Next, an example of a control program for storing and reproducing the water supply amount set by the operator in the water supply setting possible region 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%.
[0015]
FIG. 3 is a flowchart when the setting of the water supply amount is mainly changed. In this control flow, when the ultrasonic surgical apparatus 1 is operated, this process (subroutine) is called from the main routine of the program sequentially executed by the central control unit 2. Then, as shown in the figure, it is determined whether or not the water supply amount setting (water supply setting) 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). When the water supply setting up switch is not depressed, that is, when the water supply setting down switch for lowering the set water supply amount is depressed, the process proceeds to Step B described later. On the other hand, if the water supply setting up switch is depressed, the water supply set value is increased by 5%, and the value is input to a variable SAVE (step S3), and then 0 is substituted into the variable FLG ( Step S4), go to step A.
[0016]
Here, “FLG” is a variable for determining whether or not the set water supply amount is the minimum (recommended) water supply amount prescribed by the ultrasonic setting, and the set water supply amount is the minimum (recommended) water supply amount. In some cases, FLG = 1, and when the set water supply amount is not the minimum (recommended) water supply amount, FLG = 0. “SAVE” is a variable indicating the value of the set water supply amount immediately before the minimum (recommended) water supply amount specified by the ultrasonic setting, and “IRR _min ” is the minimum (required) specified by the ultrasonic setting ( (Recommended) This variable indicates the amount of water delivered.
[0017]
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 has been depressed or the ultrasonic setting output value for decreasing the ultrasonic setting output value is next. It is determined whether or not the sound wave setting down switch has been depressed (step S6). If 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 depressed, the ultrasonic output set value is increased by 5% (step S7), and accordingly, the IRR _min using the ultrasonic output set value as a parameter is also updated. (To increase). Next, the set water supply amount (water supply set value) is compared with IRR _min (step S8). When the water supply set value ≧ IRR _min , the process proceeds to step D and ends (see FIG. 6). On the other hand, when water supply set value <IRR _min , it is first determined whether or not FLG is 0 (step S9). If FLG = 0, the water supply set value is stored in SAVE (step S10), and FLG = If it is 1, IRR _min is set as the set water supply amount without storing the water supply set value (step S11), and then the process proceeds to step D and ends (see FIG. 6).
[0018]
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, go to Step A. That is, since the minimum (recommended) amount of water has already been reached, the setting cannot be lowered further. When FLG = 0, 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 assigned to FLG (step S14), and thereafter , (Water supply set value−5%) is stored in the SAVE as the water supply set value (step S15), and the process proceeds to step A. If the water supply set value decreased by 5% (water supply set value-5%) is not equal to IRR _min , FLG is left as it is, and (water supply set value-5%) is stored in SAVE as the water supply set value. (Step S15), the process proceeds to Step A.
[0019]
FIG. 6 is a flowchart of Step C when the ultrasonic setting down switch is depressed. In this control flow, first, the ultrasonic output set value is decreased by 5% (step S16), and then it is determined whether or not FLG is 1 (step S17). When FLG is 1, that is, when the minimum (recommended) water supply state is already set, the minimum (recommended) water supply IRR _min defined by the ultrasonic setting is set as the water supply set amount (step S18), and the process is terminated. On the other hand, when FLG is 0, the value of variable SAVE is compared with the value of 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.
[0020]
The above control flow is all performed by the central control unit 2.
[0021]
Next, a specific example of water supply setting using the control flow 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. Moreover, the arrow in FIG. 7 has shown the path | route of a setting change. 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. Yes.
[0022]
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 maintained. Increase the ultrasonic set output value by 5% twice. This state is indicated by a point Y in FIG. At this point Y, the set water supply amount F coincides with the minimum (recommended) water supply amount accompanying the ultrasonic setting. The set water supply amount F at this time is already 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 change route within the water supply setting possible region R, the set water supply amount F immediately before the minimum (recommended) water supply amount is set to SAVE in steps S3, 10, 15, and 20. Remembered.
[0023]
Next, the ultrasonic output set value is increased by 5% from the point Y. Since the set water supply amount F is lower than the minimum (recommended) water supply amount when the ultrasonic output set value is increased by 5% from the point Y, 0 is substituted for FLG (see step S9 in FIG. 4). . Thereafter, as the ultrasonic output set value is increased, the set water supply amount changes while matching the minimum (recommended) water supply amount.
[0024]
After increasing the ultrasonic output set value to the point Z, this time, if the ultrasonic set output value is decreased from this point Z, the minimum (recommended) water supply amount also decreases, which is consistent with this. As a result, the set amount of water is reduced. Then, when the set water supply amount reaches a point Y that matches SAVE, the set water supply amount does not change while maintaining the SAVEd amount F even if the set output value of the ultrasonic wave is decreased. That is, the water supply amount F set by the operator at the beginning of the operation is reproduced.
[0025]
As described above, the ultrasonic surgical apparatus 1 of the present embodiment has an operation (setting) display unit 4 for setting an ultrasonic output value and a water supply amount, and setting of water supply settings by the operation (setting) display unit 4. A central control unit 2 that stores a trajectory and automatically sets a water supply amount based on the stored trajectory of the water supply setting when an ultrasonic output is set by the operation (setting) display unit 4 is provided. And the central control part 2 memorize | stores the value of the set water supply amount immediately before becoming the recommended water supply amount prescribed | regulated by ultrasonic setting, and the water supply amount set automatically at the time of ultrasonic output setting is below the said set water supply amount stored. Control so that it does not. Moreover, 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 defined by the ultrasonic setting, and when the setting of the ultrasonic output value is changed, The set water supply amount is automatically changed according to the changed ultrasonic output value. Therefore, the set water supply amount initially set by the operator can be automatically reproduced according to the ultrasonic setting while ensuring the minimum (recommended) water supply amount for suppressing the heat generation of the probe.
[0026]
That is, when the ultrasonic setting value is small and the water supply setting value is large and a careful treatment is performed, and then the ultrasonic setting value is large and the water supply amount is changed to the minimum (recommended) value, the ultrasonic setting is required. Since the water supply set value automatically changes according to the surgeon, the surgeon can concentrate on the surgery without performing any setting operation. In addition, even if the ultrasonic setting value is decreased to return to the original careful treatment, the surgeon can set the desired water supply amount to a desired level because at least the large water supply amount initially obtained is automatically maintained. There is no need to change the value again. Therefore, the operation burden on the operator is reduced and the surgical efficiency is increased.
[0027]
In addition, according to the technical content demonstrated above, the various structures as shown below are obtained.
[0028]
1. In an ultrasonic surgical apparatus having an ultrasonic output setting means and a water supply setting means, means for storing an operation trajectory for water supply setting, means for reading the water supply setting from the storage means, and automatically setting the water supply setting based on the read information And an ultrasonic surgical apparatus.
[0029]
2. In the ultrasonic surgical apparatus equipped with the ultrasonic output setting means and the water supply setting means, the ultrasonic surgical apparatus includes the water supply setting means that limits the setting range by the 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 is automatically changed according to the ultrasonic output setting.
[0030]
3. The ultrasonic surgical apparatus having the ultrasonic output setting means and the water supply setting means includes a means for storing the relationship between the ultrasonic output setting and the water supply setting. When the ultrasonic output setting is changed, the water supply setting is performed by the storage means. An ultrasonic surgical apparatus characterized by changing.
[0031]
【The invention's effect】
As described above, according to the ultrasonic surgical apparatus of the present invention, the operator initially sets the amount according to the ultrasonic setting while ensuring the minimum (recommended) water supply amount for suppressing the heat generation of the probe. The set amount of water can be automatically reproduced.
[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.
2 is a graph showing an example of a relationship between an ultrasonic set output value (ultrasonic set value) and a minimum (recommended) water supply amount in the ultrasonic surgical apparatus of FIG. 1; FIG.
FIG. 3 is a flowchart when the setting of the water supply amount is mainly changed.
FIG. 4 is a flowchart when the setting of an ultrasonic output value is mainly 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 flow of FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ultrasonic surgery apparatus 2 ... Central control part (control means)
4. Operation (setting) display section (setting means)

Claims (2)

In an ultrasonic surgical apparatus for treating a living body by ultrasonic vibration,
Ultrasonic output value setting means for appropriately setting and changing the ultrasonic output value transmitted to the probe;
A water supply amount setting means for setting a water supply amount for preventing heat generation of the probe;
And has a storage means for storing a set water supply amount set by the recommended water supply amount is stored and the water supply amount setting means which is defined corresponding to the ultrasonic output value, set the water supply amount set by said water supply amount setting means And a control means for restricting the amount of water to more than the recommended amount based on the corresponding ultrasonic output value,
The control means increases the ultrasonic set value that is changed by the ultrasonic output value setting means, and sets the recommended water supply amount corresponding to the ultrasonic output value by the water supply amount setting means and stores it in the storage means. When the ultrasonic set value is reduced from the state where the set water supply amount is exceeded, the recommended water supply amount corresponding to the reduced ultrasonic set value is equal to or less than the set water supply amount. An ultrasonic surgical apparatus characterized by feeding water. In an ultrasonic surgical apparatus for treating a living body by ultrasonic vibration,
Ultrasonic output value setting means for appropriately setting and changing the ultrasonic output value transmitted to the probe;
A water supply amount setting means for setting a water supply amount for preventing heat generation of the probe;
And has a storage means for storing a set water supply amount set by the recommended water supply amount is stored and the water supply amount setting means which is defined corresponding to the ultrasonic output value, set the water supply amount set by said water supply amount setting means And a control means for restricting the amount of water to the recommended amount or more based on the corresponding ultrasonic output value,
The control means recommends corresponding to the ultrasonic output value by increasing the ultrasonic setting value changed by the ultrasonic output value setting means once the set water supply amount is set by the water supply amount setting means. When the ultrasonic set value is reduced from a state in which the water supply amount exceeds the set water supply amount, the recommended water supply amount corresponding to the reduced ultrasonic set value is equal to or less than the set water supply amount. If the set amount of water is supplied by limiting the reduction of the amount of water to fall within the range of the recommended amount of water below the amount of water, and if the amount of water is set again by the means of setting the amount of water supplied, the reset transfer set again. An ultrasonic surgical apparatus characterized by restricting a decrease in the amount of water supply to a range equal to or less than the recommended water supply amount below the water amount.

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