JP2002263579A - Ultrasonic transducer drive unit - Google Patents

Ultrasonic transducer drive unit

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Publication number
JP2002263579A
JP2002263579A JP2001063703A JP2001063703A JP2002263579A JP 2002263579 A JP2002263579 A JP 2002263579A JP 2001063703 A JP2001063703 A JP 2001063703A JP 2001063703 A JP2001063703 A JP 2001063703A JP 2002263579 A JP2002263579 A JP 2002263579A
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signal
ultrasonic transducer
frequency
phase
circuit
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Hiroo Ono
寛生 小野
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Olympus Optical Co Ltd
オリンパス光学工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic transducer drive unit capable of increasing percent modulation with a simple structure.
SOLUTION: A control system is set to that an ultrasonic transducer 3 is driven in its resonance frequency by a driving signal from a driving signal generation means 5 and that the driving signal generation means 5 follows the resonance frequency by feedback signals from a detection circuit 7. Additionally, signals for modulation are sent from a modulating signal generation means 11 to modulate the frequency of the driving signal. As a result, large modulation can be performed by a small signal for modulation by using a frequency characteristic that load impedance changes significantly in the vicinity of the resonance frequency of the ultrasonic transducer 3.
COPYRIGHT: (C)2002,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、例えば、外科手術用超音波手術装置、超音波結石破砕装置等に用いられる超音波振動子を駆動する超音波振動子駆動装置に関する。 The present invention relates to, for example, a surgical ultrasonic surgical apparatus, an ultrasonic transducer driving apparatus for driving an ultrasonic transducer used in the ultrasonic lithotriptor like.

【0002】 [0002]

【従来の技術】超音波振動によって生体を乳化、もしくは凝固、切開したり、結石を破砕する超音波手術装置が従来より知られている。 BACKGROUND ART emulsifying vivo by ultrasonic vibration, or coagulation, incision or ultrasonic surgical device for crushing stones has been known. このような超音波手術装置においては、特開平7−3036535にあるように、乳化、凝固、切開、破砕能力を一定に制御する為に、共振周波数追尾制御及び定電流制御を行うことが多い。 In such an ultrasonic surgical device, as in JP-A-7-3036535, emulsifying, coagulating, incision, in order to control the crushing ability constant, is often performed a resonant frequency tracking control and constant current control.

【0003】一方、組織選択性や破砕能力を高める為に、超音波振動子を振動させる為の出力を変調する方法が知られている。 [0003] On the other hand, in order to enhance the tissue selectivity and crushing capability, a method for modulating an output for vibrating the ultrasonic transducers are known. 単に超音波振動子への出力をon/o Simply on the output to the ultrasonic transducer / o
ffすることでも変調は実現できるが、この方法ではフィードバック信号が得られなくなる為、共振周波数追尾制御が行えず、また実公昭 50−6711にあるように、駆動信号を振幅変調する場合は、定電流制御系の応答性により、十分な変調率を得られない場合があった。 The modulation may be to ff can be realized, because the feedback signal can not be obtained in this way, the resonance frequency tracking control can not be performed, and as in real Publication 50-6711, when amplitude modulation drive signal, a constant the response of the current control system, there may not be obtained a sufficient modulation factor.

【0004】特公平7−106208においては、高出力用及び低出力用の共振周波数追尾系を用意し、両者を切り替えることにより変調を実現しているが、この構成は余分な共振周波数追尾系を用意しなければならず、やや高価になってしまう。 [0004] In KOKOKU 7-106208 prepares a resonant frequency tracking system for high-power and low power, but to achieve modulation by switching both, this configuration is unnecessary resonance frequency tracking system must be prepared, it becomes a little expensive.

【0005】(発明の目的)本発明は、前記課題を解決する為になされたものであり、簡単な構成で、変調率を大きくすることができる超音波振動子駆動装置を提供することを目的とする。 [0005] (object of the invention) The present invention has been made in order to solve the above problems, aims to provide a simple configuration, the ultrasonic transducer driving apparatus can increase the modulation factor to.

【0006】 [0006]

【課題を解決するための手段】本発明は、超音波振動子を駆動する駆動信号を発生する駆動信号発生手段と、前記駆動信号発生手段が出力する前記駆動信号の位相情報を検出する位相情報検出手段と、前記位相情報検出手段で検出された位相情報に基づき、前記駆動信号発生手段を制御して、前記超音波振動子の共振周波数に適合した前記駆動信号を出力させる駆動信号制御手段と、前記駆動信号発生手段が出力する駆動信号の周波数を変調する駆動信号変調手段と、を具備したことにより、駆動信号変調手段により駆動信号の周波数を変調することで駆動信号の出力レベルを大きく変更できるようにしている。 Means for Solving the Problems The present invention includes a drive signal generating means for generating a driving signal for driving the ultrasonic transducer, the phase information for detecting the phase information of the drive signal in which the driving signal generating means outputs detection means, based on the detected phase information by the phase information detection means, and controls the drive signal generating means, said driving signal control means for outputting the drive signals adapted to the resonant frequency of the ultrasonic vibrator , by which anda drive signal modulating means for modulating the frequency of the drive signal in which the driving signal generating means outputs, greatly change the output level of the drive signal by modulating the frequency of the drive signal by the drive signal modulating means It is possible way.

【0007】 [0007]

【発明の実施の形態】以下、図面を参照して本発明の実施の形態を説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention with reference to the drawings. (第1の実施の形態)図1ないし図4は本発明の第1の実施の形態に係り、図1は本発明の超音波振動子駆動装置の基本構成を示し、図2は第1の実施の形態の超音波振動子駆動装置の具体的な構成を示し、図3は超音波振動子駆動装置と超音波振動子とを組み合わせた場合における位相及びインピーダンスの特性を示し、図4は共振点追尾を行った状態での出力波形の特性と、変調した場合の出力波形の特性を示す。 (First Embodiment) FIGS. 1 to 4 relates to the first embodiment of the present invention, FIG. 1 shows the basic configuration of the ultrasonic transducer driving apparatus of the present invention, FIG 2 is a first shows a specific configuration of the ultrasonic transducer driving apparatus of the embodiment, FIG. 3 shows the characteristics of the phase and the impedance in the case of a combination of an ultrasonic transducer driving apparatus and the ultrasonic vibrator, 4 resonance shows the characteristics of the output waveform in a state of performing the point tracking, the characteristics of the output waveform when the modulation.

【0008】図1に示す超音波手術装置1は、本発明の超音波振動子駆動装置2と、この超音波振動子駆動装置2に接続され、駆動信号が印加される超音波振動子3を内蔵した超音波手術器具4とから構成される。 [0008] Ultrasonic surgical apparatus 1 shown in FIG. 1, the ultrasonic transducer driving apparatus 2 of the present invention, is connected to the ultrasonic transducer driving apparatus 2, an ultrasonic transducer 3 which the drive signal is applied composed of built-in ultrasonic surgical instrument 4.

【0009】超音波振動子駆動装置2は超音波振動子3 [0009] ultrasonic transducer driving apparatus 2 ultrasonic transducer 3
を、その共振周波数近傍で駆動するための駆動信号を発生する駆動信号発生手段5と、この駆動信号発生手段5 And a drive signal generating means 5 for generating a drive signal for driving at its resonant frequency near, the drive signal generating means 5
からの駆動信号を増幅する増幅器6と、この増幅器6を介して前記超音波振動子3に供給される駆動信号からその位相情報を含む信号を検出する検出回路7と、この検出回路7から出力されるフィードバック信号及び基準発振器8から発生される発振基準信号を選択的に前記駆動信号発生手段5に供給するスイッチ回路9と、前記駆動信号発生手段5の駆動信号の周波数(より広義には周波数の場合を含む位相成分)を変調する信号を供給する変調信号発生手段11と、前記スイッチ回路9と変調信号発生手段11を制御する制御回路12とによって構成されている。 An amplifier 6 for amplifying the drive signal from the detecting circuit 7 for detecting a signal including the phase information from the drive signal supplied to the ultrasonic vibrator 3 through the amplifier 6, the output from the detection circuit 7 a switch circuit 9 is supplied from the feedback signal and the reference oscillator 8 to selectively said drive signal generating means 5 for oscillating a reference signal generated is the frequency in the frequency (more broadly of the drive signal of the drive signal generating means 5 a modulating signal generating means 11 supplies a signal for modulating a phase component) including the case of being constituted by a control circuit 12 for controlling the switch circuit 9 and the modulation signal generator 11.

【0010】制御回路12は最初はスイッチ回路9の接点AをONにする切換信号を送り、基準発振器8で発生した超音波振動子3の共振周波数fr に一致する周波数の発振基準信号を駆動信号として超音波振動子3に印加し、その際の駆動信号から検出回路7により検出(抽出)したその位相情報をもつ信号をフィードバック信号として駆動信号の位相を制御し、基準発振器8からの発振基準信号にロックした状態に設定した後、スイッチ回路9の接点BをONするように切り換える。 [0010] The control circuit 12 is initially switching signal sending frequency of the oscillating reference signal a drive signal that matches the resonance frequency fr of the ultrasonic transducer 3 generated by the reference oscillator 8 to ON bit A of the switch circuit 9 as applied to the ultrasonic transducer 3, and controls the phase of the drive signal a signal having the phase information detected (extracted) by the detecting circuit 7 from the drive signal when the as a feedback signal, an oscillation reference from a reference oscillator 8 after setting the state of being locked to the signal switches to oN the contact B of the switch circuit 9.

【0011】その後、制御回路12は変調信号発生手段11を制御信号で制御し、変調信号発生手段11から変調用信号を駆動信号発生手段5に出力させ、駆動信号の振幅を変調して、超音波振動子3に印加するようにする。 [0011] Thereafter, the control circuit 12 controls the modulation signal generator 11 by a control signal, to output a modulation signal to the driving signal generation means 5 from the modulation signal generator 11 modulates the amplitude of the drive signals, ultrasonic so as to apply the ultrasonic transducer 3.

【0012】図2(A)は図1のより具体的な構成を示す。 [0012] FIG. 2 (A) shows a more specific configuration of FIG. 図2(A)に示す超音波手術装置1を構成する超音波振動子駆動装置2Aでは、超音波手術器具4の超音波振動子3に接続された検出回路7はその超音波振動子3 Figure 2, the ultrasonic transducer driving apparatus 2A constitute an ultrasonic surgical apparatus 1 (A), the detection circuit 7 connected to the ultrasonic transducer 3 of the ultrasonic surgical instrument 4 is the ultrasonic vibrator 3
の振動に応じた電圧位相θv 及び電流位相θi を検出し、この検出回路7からの電圧位相θv は図1の駆動信号発生手段5に相当するフェーズ・ロック・ループ回路(以下、PLL回路と略記)5Aを構成する位相比較器21に入力される。 Detecting a voltage phase θv and the current phase θi corresponding to the oscillation of the voltage phase θv from the detection circuit 7 of the drive signal generating means phase lock loop circuit corresponding to 5 (hereinafter FIG. 1, PLL circuit abbreviated ) is input 5A to the phase comparator 21 constituting the.

【0013】また、検出回路7からの電流位相θi と基準発振器8の発振基準信号はスイッチ回路9のそれぞれ接点B、Aを介して位相比較器21に入力される。 Further, the oscillation reference signal current phase θi and the reference oscillator 8 from the detection circuit 7 is inputted to both the contact B of the switch circuit 9, via the A to the phase comparator 21. 位相比較器21は検出回路7からの電圧位相θv とスイッチ回路8を介して入力される基準発振器8の発振基準信号或いは検出回路7からの電流位相θi との位相の比較を行い、その位相差に応じた出力信号を出す。 Compares the phase of the current phase θi from the phase comparator 21 oscillates a reference signal or the detection circuit 7 of the reference oscillator 8 is input via the voltage phase θv and the switch circuit 8 from the detection circuit 7, the phase difference produce an output signal corresponding to.

【0014】この位相比較器21の出力信号は低周波成分を通すローパスフィルタ(以下、LPFと略記)22 [0014] low-pass filter the output signal of the phase comparator 21 through a low-frequency component (hereinafter, LPF hereinafter) 22
を経て制御電圧により発振周波数が変化する電圧制御発振器(以下、VCOと略記)23に入力される。 A voltage controlled oscillator whose oscillation frequency is changed by the control voltage via (hereinafter, VCO hereinafter) is input to 23.

【0015】このVCO23は入力される制御電圧に応じた周波数で発振し、この発振信号は駆動信号として増幅器6に入力され、増幅された後、超音波振動子3に印加されると共に、検出回路7によってその電圧位相θv [0015] The VCO23 oscillates at a frequency corresponding to a control voltage input, the oscillation signal is input to the amplifier 6 as a drive signal, after being amplified, while being applied to the ultrasonic transducer 3, the detection circuit the voltage phase θv by 7
と電流位相θi が検出される。 Current phase θi is detected to.

【0016】上記スイッチ回路9は制御回路12により、接点A、Bの切り換えが制御される。 [0016] The switch circuit 9 by the control circuit 12, the contacts A, switching of B is controlled. また、図1の変調信号発生手段11として図2(A)では、発振回路11aが採用され、この発振回路11aは制御回路12 Further, in FIG. 2 (A) as a modulation signal generating means 11 in FIG. 1, the oscillation circuit 11a is employed, the oscillation circuit 11a is a control circuit 12
からの制御信号により発振が制御される。 Oscillation is controlled by a control signal from the. この発振回路11aから出力される発振信号は変調用信号として、位相比較器21の出力信号と共に、LPF22に入力される。 As oscillator signal modulation signal outputted from the oscillation circuit 11a, the output signal of the phase comparator 21 is input to the LPF 22.

【0017】この発振回路11aによる発振信号(変調用信号)の周波数は超音波振動子3をその共振周波数f [0017] The oscillation circuit 11a according to the oscillation signal frequency (modulation signal) is an ultrasonic transducer 3 the resonance frequency f
r で駆動する周波数よりも十分に低い周波数であり、例えば数100の1のオーダである。 A sufficiently lower frequency than the frequency driven by r, is 1 of the order of, for example, several 100. 上記位相比較器2 The phase comparator 2
1、LPF22、VCO23により、PLL回路5Aを構成している。 The 1, LPF22, VCO23, constitute a PLL circuit 5A.

【0018】図2(A)では発振回路11aの出力信号はLPF22に入力しているが、図2(B)に示すようにLPF22を通すことなく、直接VCO23に入力するようにしても良い。 FIG. 2 (A) in the output signal of the oscillation circuit 11a is input to LPF22, without going through the LPF22 as shown in FIG. 2 (B), may be input directly to the VCO 23. この場合には、LPF22による変調用信号の減衰をなくすことができる。 In this case, it is possible to eliminate the attenuation of the modulated signal by LPF 22.

【0019】また、本実施の形態では、超音波振動子3 Further, in the present embodiment, the ultrasonic transducer 3
は超音波駆動装置2と組み合わせた場合、その駆動信号の周波数fに対する位相θ及びインピーダンスの絶対値|Z|は図3に示すような特性となり、その共振周波数fr 付近で駆動するするように選択設定される。 Selected to become characteristic as shown in FIG. 3, is driven near the resonance frequency fr | when combined with ultrasonic drive unit 2, the absolute value of the phase θ and the impedance for the frequency f of the driving signal | Z It is set.

【0020】そして、上記PLL回路5Aによって、超音波振動子3の共振点(共振周波数fr )の追尾を行うようにフィードバック制御ループを構成している。 [0020] Then, by the PLL circuit 5A, it constitutes a feedback control loop to perform tracking of the resonance point of the ultrasonic transducer 3 (resonant frequency fr). この時の出力波形は図4(A)のようになる。 Output waveforms at this stage is shown in FIG. 4 (A). つまり、共振周波数fr にロックした状態で駆動することにより、駆動信号の振幅及び位相が一定した状態となる。 In other words, by driving in a state of being locked to the resonant frequency fr, the amplitude and phase of the drive signal becomes a constant state.

【0021】また、図4(A)の共振点の追尾を行う状態で、共振周波数fr よりも周波数が十分低く、かつその振幅も微小な変調用信号を、発振回路11aから位相比較器21の出力に加えてVCO23に入力することによって駆動信号を周波数変調することができるようにしている。 Further, in a state in which the tracking of the resonance point in FIG. 4 (A), the frequency than is sufficiently low resonance frequency fr, and the amplitude minute modulation signal, from the oscillation circuit 11a of the phase comparator 21 so that it can be frequency-modulated driving signal by inputting the VCO23 in addition to the output. この時の出力波形は図4(B)のようになる。 Output waveforms at this stage is shown in FIG. 4 (B).

【0022】つまり、VCO23に印加されるその発振周波数を決定する入力信号レベルがフィードバックした信号成分以外に、発振回路11aからの変調用信号により変動するので、VCO23の発振周波数が共振周波数fr 付近で変動し、またその振幅も変動する。 [0022] That is, in addition to the signal component input signal level is fed back to determine its oscillation frequency applied to the VCO 23, so varies the modulation signal from the oscillator 11a, the oscillation frequency of the VCO 23 is in the vicinity of the resonance frequency fr change, and also the amplitude also varies.

【0023】この場合、図3に示すように共振周波数f [0023] In this case, the resonance frequency f 3
r で超音波振動子3のインピーダンスが極小値となり、 Impedance of the ultrasonic transducer 3 is the minimum value in the r,
その付近では超音波振動子3のインピーダンスが急峻に変化する周波数特性を示しているので、変調用信号における低い周波数及び僅かな振幅の変化によって、それに対するインピーダンスが変化して、結果的に駆動信号の振幅を大きく変動させることができる。 Because the in the vicinity shows the frequency characteristic of the impedance of the ultrasonic transducer 3 is changed sharply, the change in the low frequency and small amplitude in the modulation signal, the impedance thereto is changed, resulting in a drive signal it can be varied in amplitude increases. つまり、小さな変調用信号で駆動信号を大きく変調できるようにしている。 That is, to allow increased modulating the drive signal with a small modulation signal.

【0024】なお、超音波手術器具4に用いられている超音波振動子3は例えば金属円板の間に薄い水晶板等の圧電素子板を挟んで、その共振周波数で使用するランジュバン型振動子が採用されている。 [0024] Incidentally, the ultrasonic transducer 3, which is used in the ultrasonic surgical instrument 4 is across the piezoelectric element plate of thin quartz plate or the like, for example, a metal circular plates, employed Langevin oscillator used at its resonant frequency It is.

【0025】このように、本実施の形態では、超音波手術を行うための駆動中においては、制御回路12がスイッチ回路9を制御することによって、検出回路7からの電圧位相θv 及び電流位相θi が位相比較器21に供給され、さらに駆動信号を変調する場合は、制御回路12 [0025] Thus, in the present embodiment, during driving for performing ultrasonic surgery by the control circuit 12 controls the switch circuit 9, the voltage phase θv from the detection circuit 7 and the current phase θi There is supplied to a phase comparator 21, the case of further modulating the drive signal, the control circuit 12
が発振回路11aを制御することにより、変調用信号が位相比較器21の出力に加えられてLPF22を通してVCO23に入力されるようになっている。 There By controlling the oscillator 11a, so that the modulation signal is input to the VCO23 through LPF22 is added to the output of the phase comparator 21.

【0026】次に上記構成の動作について説明する。 [0026] Next, a description will be given of the operation of the above configuration. いま、上記装置2Aを作動させる場合、PLL回路5Aに基準発振器8からの発振基準信号fref が供給されるように、制御回路12によってスイッチ回路9の接点AがONするように制御される。 Now, when operating the device 2A, as the oscillation reference signal fref from the reference oscillator 8 to the PLL circuit 5A is supplied, the contact A of the switch circuit 9 is controlled to be ON by the control circuit 12. この場合、基準発振器8からの発振基準信号fref の周波数は、実際に接続される超音波振動子3の共振周波数fr に一致するように設定される。 In this case, the frequency of the oscillation reference signal fref from the reference oscillator 8, is set to match the ultrasonic resonance frequency fr of the vibrator 3 is actually connected.

【0027】そして、その状態における電圧位相θv と発振基準信号frefとの位相ロックした動作になった後、制御回路12はスイッチ回路9を切り替え、接点B [0027] Then, after becoming operation phase locked with the voltage phase θv and the oscillation reference signal fref in that state, the control circuit 12 switches the switch circuit 9, the contact B
をONする状態にして、駆動信号自身での電圧位相θv In the state of ON, and the voltage phase θv of the drive signal itself
と電流位相θi の位相ロック動作に移行させる。 And shifting to a phase-locked operation of the current phase θi. この状態では、超音波振動子3は図4(A)のように振幅及び周波数が一定した状態で駆動される。 In this state, the ultrasonic transducer 3 is the amplitude and frequency are driven at a constant state as shown in FIG. 4 (A).

【0028】その後、制御回路12は発振回路11aより変調用信号を発振させ、位相比較器21の出力と合成してVCO23に入力する。 [0028] Thereafter, the control circuit 12 to oscillate the modulated signal from the oscillator circuit 11a, and inputs the VCO23 and combined with the output of the phase comparator 21. この変調用信号を加えることにより、前記超音波振動子3を駆動する駆動信号は共振周波数fr の近傍で変動する。 By adding this modulated signal, the drive signal for driving the ultrasonic vibrator 3 varies in the vicinity of the resonance frequency fr. 共振周波数fr の近傍では周波数fに対する変換効率が大きく変動する為、超音波振動子3は図4(B)のように振幅及び周波数が変調されて振動する。 Since the conversion efficiency for the frequency f in the vicinity of the resonance frequency fr varies greatly, the ultrasonic transducer 3 is amplitude and frequency as shown in FIG. 4 (B) to vibrate is modulated.

【0029】変調用信号の周波数及び振幅は、共振周波数fr に対し十分小さく、共振周波数追尾制御が外れない大きさであれば良い。 The frequency and amplitude of the modulation signal is sufficiently small with respect to the resonance frequency fr, it may be a size that resonant frequency tracking control does not come off. 共振周波数fr としては、一般に20kHz乃至60kHzの周波数が用いられるが、 The resonance frequency fr, but generally the frequency of 20kHz to 60kHz is used,
例えば、共振周波数fr が23.5kHzの場合は、変調用信号の周波数は約100Hz、その振幅は駆動信号に対し、その100分の1のオーダーで変調する機能を大きくできる。 For example, if the resonance frequency fr of 23.5KHz, the frequency of the modulating signal is approximately 100 Hz, the amplitude to the drive signal, it can be increased ability to modulate one of the order of 100 minutes.

【0030】従って、変調用信号の出力レベルやその周波数を変えることにより、超音波手術器具4による切開、凝固の能力を処置に必要なレベルに設定することが簡単にできる。 [0030] Therefore, by changing the output level and the frequency of the modulation signal, incisions ultrasonic surgical instrument 4, to set the capacity of the coagulation level required for the treatment can be simplified.

【0031】このように本実施の形態によれば、簡単な構成で共振周波数追尾制御系の応答性を殆ど変えないで、超音波振動子3の出力を大きく可変できるような駆動信号を生成できる。 According to this embodiment, without changing little response of the resonance frequency tracking control system with a simple structure, can generate a drive signal can be increased variable output of the ultrasonic vibrator 3 . 従って、低コスト化等が可能になる。 Therefore, it is possible to cost reduction and the like.

【0032】(第2の実施の形態)次に本発明の第2の実施の形態を図5を参照して説明する。 [0032] In the second embodiment (second embodiment) the present invention will now be described with reference to FIG. なお、第1の実施の形態との共通部分については省略し、異なる部分のみ説明する。 Note that the intersection of the first embodiment will be omitted, only different parts will be explained. 図2(A)或いは(B)に示す第1の実施の形態では発振回路11aの変調用信号をVCO23に印加するようにしていたが、本実施の形態では以下に説明するように検出回路7の出力信号の位相を変化させるようにしている。 Figure 2 (A) or in the first embodiment shown in (B) had so as to apply a modulating signal of the oscillation circuit 11a to VCO 23, the detection circuit 7 as described below in this embodiment so that to change the phase of the output signal.

【0033】図5に示す超音波振動子駆動装置2Bは、 The ultrasonic transducer driving apparatus 2B shown in FIG. 5,
図2(A)における超音波振動子駆動装置2Aにおいて、検出回路7の電圧位相θv は位相シフト回路24a In the ultrasonic transducer driving apparatus 2A in FIG. 2 (A), the voltage phase θv of the detecting circuit 7 a phase shift circuit 24a
を介して位相比較器21に入力され、また電流位相θi Through the input to the phase comparator 21, and the current phase θi
は位相シフト回路24bを介してスイッチ回路9に入力されるようにしている。 It is to be inputted to the switch circuit 9 via a phase shifting circuit 24b is.

【0034】また、これら位相シフト回路24a、24 [0034] In addition, these phase shift circuit 24a, 24
bは例えば電子ボリューム等を採用して構成され、印加される電圧によりその抵抗値が電気的に変化して、電圧位相θv 或いは電流位相θi の位相量を可変することができる。 b is configured by employing, for example electronic volume, etc., the resistance value is electrically changed by the applied voltage, it is possible to vary the phase of the voltage phase θv or current phase .theta.i.

【0035】各電子ボリュームは位相シフト制御手段として例えば発振回路11bによる発振信号によって位相シフト量が制御される。 [0035] Each electronic volume amount of phase shift is controlled by the oscillation signal by for example an oscillation circuit 11b as the phase shift control means. また、この発振回路11bは制御回路12により、その発振動作が制御される。 Further, this oscillation circuit 11b is a control circuit 12, the oscillation operation is controlled. その他は図2(A)と同様の構成である。 Others are the same configuration as that of FIG. 2 (A).

【0036】なお、図5では検出回路7と位相比較器2 [0036] The detection circuit 7 in Fig. 5 and the phase comparator 2
1との間に2つの位相シフト回路24a、24bを設けているが、何れか一方のみでも良い。 Two phase shift circuits 24a between 1, is provided with the 24b, either may be only one. 図5のように2つ設ける場合には、例えば位相シフト回路24aと24b In the case of providing two as in FIG. 5, for example, a phase shift circuit 24a and 24b
との位相を互いに逆方向に位相シフトさせるようにすると、位相変調(周波数変調)の機能を大きくできることになる。 When so as to phase shift in opposite directions the phase of the, will be possible to increase the function of the phase modulation (frequency modulation).

【0037】また、発振回路11bは第1の実施の形態の場合の発振回路11aと同様の周波数で発振信号を出力するが、その振幅は位相シフト回路24a、24bの発振信号の電圧に対する位相シフト量に応じて設定される。 [0037] The oscillation circuit 11b is outputting an oscillation signal in the same frequency as the oscillation circuit 11a in the case of the first embodiment, the phase shift relative to the voltage of the amplitude the phase shift circuit 24a, 24b oscillation signal It is set according to the amount.

【0038】この場合も、その位相シフト量は共振周波数の周期の位相量2πに対して、その数100分の1のオーダーで位相シフトを行うと、駆動信号の出力を大幅に変化することができる。 [0038] In this case, the phase shift amount with respect to the phase amount 2π period of the resonance frequency, when the phase shift in one of the order of a few hundredths, can vary considerably the output of the driving signal it can.

【0039】第1の実施の形態の場合には、変調率を大幅に大きくする為には、共振周波数追尾制御系の外部から変調用信号の周波数或いは振幅を大きくして印加する必要があるが、その場合にはフィードバックする信号の周波数(位相)の変化と共に、外部から印加されることにより振幅が大きく変動するために共振周波数追尾制御が外れ易くなり、共振周波数追尾制御系を安定した動作状態に保持するためには、変調率を大幅に大きくするには限界がある。 [0039] In the case of the first embodiment, in order to significantly increase the modulation rate, it is necessary to apply by increasing the frequency or amplitude of the modulation signal from the outside of the resonance frequency tracking control system , with changes in frequency of the signal fed back in that case (phase), easily disconnected resonant frequency tracking control on the amplitude varies greatly by being applied externally, stable operating conditions the resonance frequency tracking control system to hold, the in significantly increasing the modulation rate is limited.

【0040】本実施の形態においては、共振周波数追尾制御系に入力される信号の位相のみを変化させている為、その位相(周波数)変化により、共振周波数追尾制御系の振幅も変化するが、その変化は位相(周波数)変化により引き起こされるもので、外部から直接変動されるものでないので、第1の実施の形態の場合よりも安定した共振周波数追尾制御系の動作を保持することが可能となる。 [0040] In this embodiment, since it is changed only the phase of the signal inputted to the resonance frequency tracking control system, by the phase (frequency) changes, it varies the amplitude of the resonance frequency tracking control system, the change those caused by the phase (frequency) changes, since not intended to be varied directly from the outside, it is possible to maintain a stable operation of the resonant frequency tracking control system than in the first embodiment and Become.

【0041】(第3の実施の形態)次に本発明の第3の実施の形態を図6及び図7を参照して説明する。 [0041] The third embodiment (Third Embodiment) Next present invention with reference to FIGS explained. 図6に示すように第3の実施の形態の超音波振動子駆動装置2 Figure 6 As shown in the third embodiment of the ultrasonic transducer driving apparatus 2
Cでは、検出回路7で検出された電圧位相θv 及び電流位相θi は、デジタル方式のPLL回路5Bを構成する位相差検出回路31に入力される。 In C, the voltage phase θv and the current phase θi detected by the detection circuit 7 is input to the phase difference detecting circuit 31 constituting the PLL circuit 5B of the digital. そして、両者の位相差を求め、その位相差に対応したデジタル出力をスイッチ回路32を介してレジスタ33に出力する。 Then, a phase difference between them, and outputs a digital output corresponding to the phase difference to the register 33 through the switch circuit 32.

【0042】このレジスタ33は入力される値を保持し、その保持した値は出力端からデジタル発振器34に出力される。 [0042] The register 33 holds the value entered, the value thereof held is outputted from the output terminal to the digital oscillator 34. このデジタル発振器34はレジスタ33からのデジタル値に応じた周波数で発振して駆動信号を発生する。 The digital oscillator 34 oscillates at a frequency corresponding to the digital value from the register 33 to generate a driving signal. この駆動信号は増幅器6で増幅され、超音波振動子3に印加される。 The drive signal is amplified by the amplifier 6, it is applied to the ultrasonic transducer 3. 上記位相差検出回路31、スイッチ回路32、レジスタ33、デジタル発振器34によってデジタル方式のPLL回路5Bが構成されている。 The phase difference detecting circuit 31, the switch circuit 32, a register 33, PLL circuit 5B of the digital system is constituted by a digital oscillator 34.

【0043】上記スイッチ回路32は制御回路12により、ON、OFFが制御される。 [0043] By the switching circuit 32 the control circuit 12, ON, OFF is controlled. この制御回路12は初期状態ではこのスイッチ回路32をOFFにして、データ送出回路35を制御し、データ送出回路35から初期周波数設定用データをレジスタ33に送出させる。 The control circuit 12 is in the initial state to the switch circuit 32 to OFF, controls the data transmission circuit 35, it is transmitted from the data transmission circuit 35 to an initial frequency setting data in the register 33. この初期周波数設定用データはデジタル発振器34の発振周波数を超音波振動子3の共振周波数fr に一致させる値である。 Data for this initial frequency setting is a value to match the oscillation frequency of the digital oscillator 34 to the resonance frequency fr of the ultrasonic transducer 3.

【0044】従って、デジタル発振器34はそのデータにより発振し、その発振周波数は超音波振動子3の共振周波数fr に一致する。 [0044] Thus, the digital oscillator 34 is oscillated by the data, the oscillation frequency matches the resonance frequency fr of the ultrasonic transducer 3. その後、制御回路12はスイッチ回路32をONして、PLL制御状態に設定し、共振点追尾を行う状態に設定する。 Thereafter, the control circuit 12 is turned ON the switch circuit 32, and sets the PLL control state, sets the state of performing a resonance point tracking.

【0045】また、制御回路12はPLL制御状態に設定した後、第2のスイッチ回路36をONして、変調回路37からデジタル的にUP/DOWNする変調用信号をレジスタ33に入力し、デジタル発振器34の発振周波数を変動させる。 Further, after the control circuit 12 is set to the PLL control state, the second switching circuit 36 ​​turned ON, the digitally modulated signal to UP / DOWN input to the register 33 from the modulation circuit 37, a digital varying the oscillation frequency of the oscillator 34.

【0046】次に本実施の形態の作用を説明する。 [0046] Next will be described the operation of the present embodiment. 発振開始時には、制御回路12はデータ送出回路35を制御して、データ送出回路35から初期データをレジスタ3 At the start of oscillation, the control circuit 12 controls the data transmission circuit 35, the initial data from the data transmission circuit 35 register 3
3に送出させ、スイッチ回路32及びスイッチ回路36 3 is sent to the switch circuit 32 and the switching circuit 36
を共に切断(OFF)状態で、デジタル発振器34を発振させる(図7のステップS1)。 Together cut with (OFF) state, to oscillate the digital oscillator 34 (Step S1 in FIG. 7).

【0047】この場合、初期データは超音波振動子3をその共振周波数fr で発振させるデータであるので、デジタル発振器34は発振周波数fr で発振する。 [0047] In this case, since the initial data is the data to oscillate the ultrasonic vibrator 3 at its resonance frequency fr, the digital oscillator 34 oscillates at an oscillation frequency fr.

【0048】その後、制御回路12はスイッチ回路32 [0048] Thereafter, the control circuit 12 is a switch circuit 32
をONにして、PLL制御状態に移行さる(ステップS The then to ON, monkey transition to PLL control state (step S
2)。 2). 次に、制御回路12はスイッチ回路36をONにして、変調回路37が出力するUP/DOWN信号をレジスタ33に入力させ、この周期的にUP/DOWNする変調用信号により発振周波数を決める周波数データを変動させる。 Next, the control circuit 12 to the switch circuit 36 ​​to ON, the frequency data for determining the oscillation frequency of the UP / DOWN signal modulating circuit 37 outputs is inputted to the register 33, this periodic modulation signal for UP / DOWN the varied.

【0049】これによりデジタル発振器34の出力周波数は超音波振動子3の共振周波数fr の近傍で変動し、 [0049] Thus, the output frequency of the digital oscillator 34 is fluctuated in the vicinity of the resonance frequency fr of the ultrasonic transducer 3,
超音波振動子3の振動は振幅変調されることになる(ステップS3)。 Vibration of the ultrasonic transducer 3 will be amplitude modulated (Step S3).

【0050】本実施の形態は第2の実施の形態と同様な効果を有する。 [0050] This embodiment has the same effect as in the second embodiment. なお、本実施の形態は超音波による結石の破砕等にも利用できる。 Note that this embodiment can also be used to fracture or the like of the calculus by ultrasound.

【0051】[付記」 1. [0051] [Appendix "1. 前記超音波振動子がランジュバン型圧電振動子であることを特徴とする請求項1記載の超音波振動子駆動装置。 The ultrasonic transducer driving apparatus according to claim 1, wherein the ultrasonic transducer is characterized in that it is a Langevin type piezoelectric vibrator. 2. 2. 前記駆動信号制御手段及び前記駆動信号変調手段がデジタル回路で構成されることを特徴とする請求項1記載の超音波振動子駆動装置。 The drive signal control means and the driving signal modulating means ultrasonic transducer driving apparatus according to claim 1, characterized in that it is constituted by a digital circuit.

【0052】3. [0052] 3. 駆動信号発生手段で発生した超音波振動子の共振周波数に殆ど一致する周波数の駆動信号で前記超音波振動子を駆動し、前記超音波振動子を駆動した際の位相情報を位相情報検出手段で検出し、前記位相情報に基づくフィードバック信号で前記駆動信号発生手段を制御して共振周波数の追尾制御系を備えた超音波振動子駆動装置において、前記共振周波数の追尾制御系における前記駆動信号を周波数変調する周波数変調手段或いは前記フィードバック信号の位相を変化させる位相変化手段を設けたことを特徴とする超音波振動子駆動装置。 In the phase information detection means the phase information when the driving signal of a frequency almost coincides with the resonance frequency of the ultrasonic vibrator generated by the driving signal generating means drives the ultrasonic transducer, and driving the ultrasonic vibrator detecting the ultrasonic transducer driving apparatus having a tracking control system of the resonance frequency by controlling the drive signal generating means in the feedback signal based on the phase information, the frequency the drive signal in the tracking control system of the resonant frequency ultrasonic transducer driving apparatus characterized in that a phase changing means for changing the phase of the modulation frequency modulating means or said feedback signal. 4. 4. 前記共振周波数の追尾制御系はアナログ或いはデジタル方式のPLL回路で構成される付記3記載の超音波振動子駆動装置。 The tracking control system of the resonance frequency ultrasonic transducer driving apparatus according to Supplementary Note 1, wherein is composed of a PLL circuit of analog or digital.

【0053】5. [0053] 5. 駆動信号発生手段で発生した超音波振動子の共振周波数に殆ど一致する周波数の駆動信号で、 A driving signal of a frequency almost coincides with the resonance frequency of the ultrasonic vibrator generated by the drive signal generating means,
しかも前記超音波振動子のインピーダンスが前記共振周波数近傍の周波数で急峻に変化する特性を有する超音波振動子を駆動し、前記超音波振動子を駆動した際の位相情報を位相情報検出手段で検出し、前記位相情報に基づくフィードバック信号で前記駆動信号発生手段を制御して共振周波数の追尾制御系を備えた超音波振動子駆動装置において、前記共振周波数の追尾制御系における前記駆動信号を周波数変調する周波数変調手段或いは前記フィードバック信号の位相を変化させる位相変化手段を設けたことを特徴とする超音波振動子駆動装置。 Moreover the impedance of the ultrasonic transducer drives the ultrasonic vibrator having a sharply changing characteristic frequency of the resonant frequency near the phase information at the time of driving the ultrasonic vibrator detected by the phase information detecting means and, in the ultrasonic transducer driving apparatus having a tracking control system of the resonance frequency by controlling the drive signal generating means in the feedback signal based on the phase information, frequency modulating the drive signal in the tracking control system of the resonant frequency ultrasonic transducer driving apparatus characterized in that a phase changing means for changing the phase of the frequency modulation means or said feedback signal.

【0054】 [0054]

【発明の効果】以上説明したように、本発明によれば、 As described in the foregoing, according to the present invention,
共振周波数近傍で超音波振動子のインピーダンスが大きく変化していることを利用して、駆動信号の周波数を共振周波数近傍で変調し、超音波振動子の駆動電流の値を変化させることにより、簡単な構成で大きな振幅変調等の出力レベルの変更を実現できる。 By utilizing the fact that the impedance of the ultrasonic transducer in the vicinity the resonant frequency greatly changes, modulating the frequency of the drive signal in the vicinity of the resonance frequency by changing the value of the drive current of the ultrasonic vibrator, easy can be realized output level changes large amplitude modulation, etc. in Do configuration. また、低コスト化もできる。 In addition, it is also low-cost.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の超音波振動子駆動装置の基本構成を示すブロック図。 Block diagram showing the basic configuration of the ultrasonic transducer driving apparatus of the present invention; FIG.

【図2】本発明の第1の実施の形態の超音波振動子駆動装置の具体的な構成を示すブロック図。 2 is a block diagram showing a specific configuration of the ultrasonic transducer driving apparatus of the first embodiment of the present invention.

【図3】超音波振動子駆動装置と超音波振動子とを組み合わせた場合における位相及びインピーダンスの周波数特性図。 Frequency characteristic diagram of the phase and impedance when the [3] a combination of an ultrasonic transducer driving apparatus and the ultrasonic vibrator.

【図4】共振点追尾を行った状態での出力波形の特性と、変調した場合の出力波形の特性図。 [Figure 4] and characteristics of the output waveform in a state of performing a resonance point tracking, characteristic diagram of an output waveform when the modulation.

【図5】本発明の第2の実施の形態の超音波振動子駆動装置の構成を示すブロック図。 Block diagram showing a configuration of an ultrasonic transducer driving apparatus according to a second embodiment of the present invention; FIG.

【図6】本発明の第3の実施の形態の超音波振動子駆動装置の構成を示すブロック図。 [6] third block diagram showing a configuration of an ultrasonic transducer driving apparatus according to an embodiment of the present invention.

【図7】作用説明のフローチャート図。 FIG. 7 is a flowchart diagram of the action description.

【符号の説明】 1…超音波手術装置 2…超音波振動子駆動装置 3…超音波振動子 4…超音波手術器具 5…駆動信号発生手段 5A…PLL回路 6…増幅器 7…検出回路 8…基準発振器 9…スイッチ回路 11…変調信号発生手段 11a…発振回路 12…制御回路 21…位相比較器 22…ローパスフィルタ(LPF) 23…電圧制御発振器(VCO) [Description of Reference Numerals] 1 ... ultrasonic surgical device 2 ... ultrasonic transducer driving apparatus 3 ... ultrasonic vibrator 4 ... ultrasonic surgical instrument 5 ... drive signal generating means 5A ... PLL circuit 6 ... amplifier 7 ... detecting circuit 8 ... reference oscillator 9 ... switching circuit 11 ... modulating signal generating means 11a ... oscillation circuit 12 ... control circuit 21 ... phase comparator 22 ... low-pass filter (LPF) 23 ... voltage controlled oscillator (VCO)

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 超音波振動子を駆動する駆動信号を発生する駆動信号発生手段と、 前記駆動信号発生手段が出力する前記駆動信号の位相情報を検出する位相情報検出手段と、 前記位相情報検出手段で検出された位相情報に基づき、 1. A driving signal generation means for generating a driving signal for driving the ultrasonic transducer, and the phase information detection means for detecting the phase information of the drive signal in which the driving signal generating means outputs the phase information detected based on the phase information detected by the means,
    前記駆動信号発生手段を制御して、前記超音波振動子の共振周波数に適合した前記駆動信号を出力させる駆動信号制御手段と、 前記駆動信号発生手段を出力する駆動信号の周波数を変調する駆動信号変調手段と、を具備したことを特徴とする超音波振動子駆動装置。 And controls the drive signal generating means, said driving signal control means for outputting the drive signals adapted to the resonant frequency of the ultrasonic vibrator, the drive signal for modulating the frequency of the drive signal for outputting the driving signal generating means ultrasonic transducer driving apparatus characterized by comprising a modulating means.
  2. 【請求項2】 前記駆動信号制御手段が電圧制御発振器から構成されるPLL回路であることを特徴とする請求項1記載の超音波振動子駆動装置。 Wherein said driving signal control means ultrasonic transducer driving apparatus according to claim 1, wherein it is a PLL circuit composed of a voltage controlled oscillator.
  3. 【請求項3】 前記駆動信号変調手段がフィードバック信号の位相シフト手段であることを特徴とする請求項1 Wherein the driving signal modulating means is characterized in that the phase shifting means of the feedback signal according to claim 1
    記載の超音波振動子駆動装置。 Ultrasonic transducer driving apparatus as set forth.
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Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862133A1 (en) * 2006-06-02 2007-12-05 Olympus Medical Systems Corp. Ultrasonic surgical apparatus and method of driving ultrasonic treatment device
JP2008126209A (en) * 2006-11-24 2008-06-05 Health & Life Co Ltd System for piezoelectric energy generation and generation method of the same
WO2010064461A1 (en) * 2008-12-02 2010-06-10 株式会社カイジョー Ultrasonic oscillator and method for writing in of program
JP2010162487A (en) * 2009-01-16 2010-07-29 Sony Corp Piezo-electric vibration device system and electrical appliance
JP2010535088A (en) * 2007-07-31 2010-11-18 エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. Ultrasonic surgical instrument with a modulator
US8523889B2 (en) 2007-07-27 2013-09-03 Ethicon Endo-Surgery, Inc. Ultrasonic end effectors with increased active length
US8531064B2 (en) 2010-02-11 2013-09-10 Ethicon Endo-Surgery, Inc. Ultrasonically powered surgical instruments with rotating cutting implement
US8546999B2 (en) 2009-06-24 2013-10-01 Ethicon Endo-Surgery, Inc. Housing arrangements for ultrasonic surgical instruments
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US8579928B2 (en) 2010-02-11 2013-11-12 Ethicon Endo-Surgery, Inc. Outer sheath and blade arrangements for ultrasonic surgical instruments
US8591536B2 (en) 2007-11-30 2013-11-26 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument blades
US8623027B2 (en) 2007-10-05 2014-01-07 Ethicon Endo-Surgery, Inc. Ergonomic surgical instruments
US8704425B2 (en) 2008-08-06 2014-04-22 Ethicon Endo-Surgery, Inc. Ultrasonic device for cutting and coagulating with stepped output
US8773001B2 (en) 2009-07-15 2014-07-08 Ethicon Endo-Surgery, Inc. Rotating transducer mount for ultrasonic surgical instruments
US8808319B2 (en) 2007-07-27 2014-08-19 Ethicon Endo-Surgery, Inc. Surgical instruments
JP2014204982A (en) * 2007-12-03 2014-10-30 コヴィディエン・アクチェンゲゼルシャフト Cordless hand-held ultrasonic cautery cutting device
US8951272B2 (en) 2010-02-11 2015-02-10 Ethicon Endo-Surgery, Inc. Seal arrangements for ultrasonically powered surgical instruments
US8951248B2 (en) 2009-10-09 2015-02-10 Ethicon Endo-Surgery, Inc. Surgical generator for ultrasonic and electrosurgical devices
US9017326B2 (en) 2009-07-15 2015-04-28 Ethicon Endo-Surgery, Inc. Impedance monitoring apparatus, system, and method for ultrasonic surgical instruments
US9050124B2 (en) 2007-03-22 2015-06-09 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument and cartilage and bone shaping blades therefor
US9095367B2 (en) 2012-10-22 2015-08-04 Ethicon Endo-Surgery, Inc. Flexible harmonic waveguides/blades for surgical instruments
US9107689B2 (en) 2010-02-11 2015-08-18 Ethicon Endo-Surgery, Inc. Dual purpose surgical instrument for cutting and coagulating tissue
US9168054B2 (en) 2009-10-09 2015-10-27 Ethicon Endo-Surgery, Inc. Surgical generator for ultrasonic and electrosurgical devices
US9198714B2 (en) 2012-06-29 2015-12-01 Ethicon Endo-Surgery, Inc. Haptic feedback devices for surgical robot
US9226767B2 (en) 2012-06-29 2016-01-05 Ethicon Endo-Surgery, Inc. Closed feedback control for electrosurgical device
US9226766B2 (en) 2012-04-09 2016-01-05 Ethicon Endo-Surgery, Inc. Serial communication protocol for medical device
US9232979B2 (en) 2012-02-10 2016-01-12 Ethicon Endo-Surgery, Inc. Robotically controlled surgical instrument
US9237921B2 (en) 2012-04-09 2016-01-19 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9241728B2 (en) 2013-03-15 2016-01-26 Ethicon Endo-Surgery, Inc. Surgical instrument with multiple clamping mechanisms
US9241731B2 (en) 2012-04-09 2016-01-26 Ethicon Endo-Surgery, Inc. Rotatable electrical connection for ultrasonic surgical instruments
US9283045B2 (en) 2012-06-29 2016-03-15 Ethicon Endo-Surgery, Llc Surgical instruments with fluid management system
US9326788B2 (en) 2012-06-29 2016-05-03 Ethicon Endo-Surgery, Llc Lockout mechanism for use with robotic electrosurgical device
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US9408622B2 (en) 2012-06-29 2016-08-09 Ethicon Endo-Surgery, Llc Surgical instruments with articulating shafts
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US9439668B2 (en) 2012-04-09 2016-09-13 Ethicon Endo-Surgery, Llc Switch arrangements for ultrasonic surgical instruments
US9439669B2 (en) 2007-07-31 2016-09-13 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments
US9445832B2 (en) 2007-07-31 2016-09-20 Ethicon Endo-Surgery, Llc Surgical instruments
US9504483B2 (en) 2007-03-22 2016-11-29 Ethicon Endo-Surgery, Llc Surgical instruments
US9636135B2 (en) 2007-07-27 2017-05-02 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments
US9700339B2 (en) 2009-05-20 2017-07-11 Ethicon Endo-Surgery, Inc. Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments
US9707027B2 (en) 2010-05-21 2017-07-18 Ethicon Endo-Surgery, Llc Medical device
US9724118B2 (en) 2012-04-09 2017-08-08 Ethicon Endo-Surgery, Llc Techniques for cutting and coagulating tissue for ultrasonic surgical instruments
US9764164B2 (en) 2009-07-15 2017-09-19 Ethicon Llc Ultrasonic surgical instruments
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US9820768B2 (en) 2012-06-29 2017-11-21 Ethicon Llc Ultrasonic surgical instruments with control mechanisms
US9883884B2 (en) 2007-03-22 2018-02-06 Ethicon Llc Ultrasonic surgical instruments
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US10010339B2 (en) 2007-11-30 2018-07-03 Ethicon Llc Ultrasonic surgical blades
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US10034684B2 (en) 2015-06-15 2018-07-31 Ethicon Llc Apparatus and method for dissecting and coagulating tissue
US10154852B2 (en) 2015-07-01 2018-12-18 Ethicon Llc Ultrasonic surgical blade with improved cutting and coagulation features
US10179022B2 (en) 2015-12-30 2019-01-15 Ethicon Llc Jaw position impedance limiter for electrosurgical instrument
US10194973B2 (en) 2015-09-30 2019-02-05 Ethicon Llc Generator for digitally generating electrical signal waveforms for electrosurgical and ultrasonic surgical instruments
US10201365B2 (en) 2012-10-22 2019-02-12 Ethicon Llc Surgeon feedback sensing and display methods
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US10245065B2 (en) 2018-05-22 2019-04-02 Ethicon Llc Ultrasonic surgical blades

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS506711Y1 (en) * 1969-09-13 1975-02-26
JPS57180470A (en) * 1981-04-28 1982-11-06 Shimada Rika Kogyo Kk Oscillator for ultrasonic washer
JPH01288378A (en) * 1987-12-18 1989-11-20 Kerry Ultrasonics Ltd Apparatus for generating ultrasonic signal
JPH0360773A (en) * 1989-07-27 1991-03-15 Mitsubishi Electric Corp Ultrasonic processing device
JPH03131246A (en) * 1989-10-17 1991-06-04 Olympus Optical Co Ltd Ultrasonic therapy equipment
JPH0631872U (en) * 1992-09-28 1994-04-26 ティーディーケイ株式会社 The piezoelectric vibrator driving circuit
JPH07289991A (en) * 1994-04-28 1995-11-07 Mitsui Petrochem Ind Ltd Driving apparatus
JPH07106208B2 (en) * 1986-04-02 1995-11-15 ヴァリーラブ・インコ. Surgical crushing and resection device according to the ultrasound of the organization
JPH07303635A (en) * 1994-05-16 1995-11-21 Olympus Optical Co Ltd Drive device for ultrasonic oscillator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS506711Y1 (en) * 1969-09-13 1975-02-26
JPS57180470A (en) * 1981-04-28 1982-11-06 Shimada Rika Kogyo Kk Oscillator for ultrasonic washer
JPH07106208B2 (en) * 1986-04-02 1995-11-15 ヴァリーラブ・インコ. Surgical crushing and resection device according to the ultrasound of the organization
JPH01288378A (en) * 1987-12-18 1989-11-20 Kerry Ultrasonics Ltd Apparatus for generating ultrasonic signal
JPH0360773A (en) * 1989-07-27 1991-03-15 Mitsubishi Electric Corp Ultrasonic processing device
JPH03131246A (en) * 1989-10-17 1991-06-04 Olympus Optical Co Ltd Ultrasonic therapy equipment
JPH0631872U (en) * 1992-09-28 1994-04-26 ティーディーケイ株式会社 The piezoelectric vibrator driving circuit
JPH07289991A (en) * 1994-04-28 1995-11-07 Mitsui Petrochem Ind Ltd Driving apparatus
JPH07303635A (en) * 1994-05-16 1995-11-21 Olympus Optical Co Ltd Drive device for ultrasonic oscillator

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JP4621194B2 (en) * 2006-11-24 2011-01-26 合世生醫科技股▲分▼有限公司 The piezoelectric energy generating system and generation method thereof
JP2008126209A (en) * 2006-11-24 2008-06-05 Health & Life Co Ltd System for piezoelectric energy generation and generation method of the same
US9987033B2 (en) 2007-03-22 2018-06-05 Ethicon Llc Ultrasonic surgical instruments
US9504483B2 (en) 2007-03-22 2016-11-29 Ethicon Endo-Surgery, Llc Surgical instruments
US9801648B2 (en) 2007-03-22 2017-10-31 Ethicon Llc Surgical instruments
US9050124B2 (en) 2007-03-22 2015-06-09 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument and cartilage and bone shaping blades therefor
US9883884B2 (en) 2007-03-22 2018-02-06 Ethicon Llc Ultrasonic surgical instruments
US8808319B2 (en) 2007-07-27 2014-08-19 Ethicon Endo-Surgery, Inc. Surgical instruments
US9642644B2 (en) 2007-07-27 2017-05-09 Ethicon Endo-Surgery, Llc Surgical instruments
US9707004B2 (en) 2007-07-27 2017-07-18 Ethicon Llc Surgical instruments
US9220527B2 (en) 2007-07-27 2015-12-29 Ethicon Endo-Surgery, Llc Surgical instruments
US9636135B2 (en) 2007-07-27 2017-05-02 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments
US8523889B2 (en) 2007-07-27 2013-09-03 Ethicon Endo-Surgery, Inc. Ultrasonic end effectors with increased active length
US9913656B2 (en) 2007-07-27 2018-03-13 Ethicon Llc Ultrasonic surgical instruments
US9414853B2 (en) 2007-07-27 2016-08-16 Ethicon Endo-Surgery, Llc Ultrasonic end effectors with increased active length
JP2010535088A (en) * 2007-07-31 2010-11-18 エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. Ultrasonic surgical instrument with a modulator
US8709031B2 (en) 2007-07-31 2014-04-29 Ethicon Endo-Surgery, Inc. Methods for driving an ultrasonic surgical instrument with modulator
US9445832B2 (en) 2007-07-31 2016-09-20 Ethicon Endo-Surgery, Llc Surgical instruments
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US8623027B2 (en) 2007-10-05 2014-01-07 Ethicon Endo-Surgery, Inc. Ergonomic surgical instruments
US9848902B2 (en) 2007-10-05 2017-12-26 Ethicon Llc Ergonomic surgical instruments
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US10045794B2 (en) 2007-11-30 2018-08-14 Ethicon Llc Ultrasonic surgical blades
US10010339B2 (en) 2007-11-30 2018-07-03 Ethicon Llc Ultrasonic surgical blades
US8591536B2 (en) 2007-11-30 2013-11-26 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument blades
US9066747B2 (en) 2007-11-30 2015-06-30 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument blades
US9339289B2 (en) 2007-11-30 2016-05-17 Ehticon Endo-Surgery, LLC Ultrasonic surgical instrument blades
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US8749116B2 (en) 2008-08-06 2014-06-10 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9795808B2 (en) 2008-08-06 2017-10-24 Ethicon Llc Devices and techniques for cutting and coagulating tissue
US8704425B2 (en) 2008-08-06 2014-04-22 Ethicon Endo-Surgery, Inc. Ultrasonic device for cutting and coagulating with stepped output
US8546996B2 (en) 2008-08-06 2013-10-01 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9504855B2 (en) 2008-08-06 2016-11-29 Ethicon Surgery, LLC Devices and techniques for cutting and coagulating tissue
US10022567B2 (en) 2008-08-06 2018-07-17 Ethicon Llc Devices and techniques for cutting and coagulating tissue
US8779648B2 (en) 2008-08-06 2014-07-15 Ethicon Endo-Surgery, Inc. Ultrasonic device for cutting and coagulating with stepped output
US10022568B2 (en) 2008-08-06 2018-07-17 Ethicon Llc Devices and techniques for cutting and coagulating tissue
US9089360B2 (en) 2008-08-06 2015-07-28 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9072539B2 (en) 2008-08-06 2015-07-07 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
WO2010064461A1 (en) * 2008-12-02 2010-06-10 株式会社カイジョー Ultrasonic oscillator and method for writing in of program
US8830003B2 (en) 2008-12-02 2014-09-09 Kaijo Corporation Ultrasonic generator and program writing method
JP2010131477A (en) * 2008-12-02 2010-06-17 Kaijo Corp Ultrasonic oscillator, and program writing method
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US9700339B2 (en) 2009-05-20 2017-07-11 Ethicon Endo-Surgery, Inc. Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments
US8754570B2 (en) 2009-06-24 2014-06-17 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instruments comprising transducer arrangements
US9498245B2 (en) 2009-06-24 2016-11-22 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments
US8546999B2 (en) 2009-06-24 2013-10-01 Ethicon Endo-Surgery, Inc. Housing arrangements for ultrasonic surgical instruments
US9764164B2 (en) 2009-07-15 2017-09-19 Ethicon Llc Ultrasonic surgical instruments
US9017326B2 (en) 2009-07-15 2015-04-28 Ethicon Endo-Surgery, Inc. Impedance monitoring apparatus, system, and method for ultrasonic surgical instruments
US8773001B2 (en) 2009-07-15 2014-07-08 Ethicon Endo-Surgery, Inc. Rotating transducer mount for ultrasonic surgical instruments
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US10201382B2 (en) 2009-10-09 2019-02-12 Ethicon Llc Surgical generator for ultrasonic and electrosurgical devices
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US8531064B2 (en) 2010-02-11 2013-09-10 Ethicon Endo-Surgery, Inc. Ultrasonically powered surgical instruments with rotating cutting implement
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US10117667B2 (en) 2010-02-11 2018-11-06 Ethicon Llc Control systems for ultrasonically powered surgical instruments
US8579928B2 (en) 2010-02-11 2013-11-12 Ethicon Endo-Surgery, Inc. Outer sheath and blade arrangements for ultrasonic surgical instruments
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US8951272B2 (en) 2010-02-11 2015-02-10 Ethicon Endo-Surgery, Inc. Seal arrangements for ultrasonically powered surgical instruments
US9107689B2 (en) 2010-02-11 2015-08-18 Ethicon Endo-Surgery, Inc. Dual purpose surgical instrument for cutting and coagulating tissue
US9649126B2 (en) 2010-02-11 2017-05-16 Ethicon Endo-Surgery, Llc Seal arrangements for ultrasonically powered surgical instruments
US9707027B2 (en) 2010-05-21 2017-07-18 Ethicon Endo-Surgery, Llc Medical device
CN103347564B (en) * 2010-11-15 2016-09-21 财团法人卫生研究院 Complex frequency ultrasound phased array drive system
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US9232979B2 (en) 2012-02-10 2016-01-12 Ethicon Endo-Surgery, Inc. Robotically controlled surgical instrument
US9925003B2 (en) 2012-02-10 2018-03-27 Ethicon Endo-Surgery, Llc Robotically controlled surgical instrument
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US9241731B2 (en) 2012-04-09 2016-01-26 Ethicon Endo-Surgery, Inc. Rotatable electrical connection for ultrasonic surgical instruments
US9237921B2 (en) 2012-04-09 2016-01-19 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9226766B2 (en) 2012-04-09 2016-01-05 Ethicon Endo-Surgery, Inc. Serial communication protocol for medical device
US9820768B2 (en) 2012-06-29 2017-11-21 Ethicon Llc Ultrasonic surgical instruments with control mechanisms
US9351754B2 (en) 2012-06-29 2016-05-31 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments with distally positioned jaw assemblies
US9408622B2 (en) 2012-06-29 2016-08-09 Ethicon Endo-Surgery, Llc Surgical instruments with articulating shafts
US9198714B2 (en) 2012-06-29 2015-12-01 Ethicon Endo-Surgery, Inc. Haptic feedback devices for surgical robot
US9283045B2 (en) 2012-06-29 2016-03-15 Ethicon Endo-Surgery, Llc Surgical instruments with fluid management system
US9737326B2 (en) 2012-06-29 2017-08-22 Ethicon Endo-Surgery, Llc Haptic feedback devices for surgical robot
US9226767B2 (en) 2012-06-29 2016-01-05 Ethicon Endo-Surgery, Inc. Closed feedback control for electrosurgical device
US9393037B2 (en) 2012-06-29 2016-07-19 Ethicon Endo-Surgery, Llc Surgical instruments with articulating shafts
US9326788B2 (en) 2012-06-29 2016-05-03 Ethicon Endo-Surgery, Llc Lockout mechanism for use with robotic electrosurgical device
US9713507B2 (en) 2012-06-29 2017-07-25 Ethicon Endo-Surgery, Llc Closed feedback control for electrosurgical device
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US9095367B2 (en) 2012-10-22 2015-08-04 Ethicon Endo-Surgery, Inc. Flexible harmonic waveguides/blades for surgical instruments
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US9241728B2 (en) 2013-03-15 2016-01-26 Ethicon Endo-Surgery, Inc. Surgical instrument with multiple clamping mechanisms
US10034684B2 (en) 2015-06-15 2018-07-31 Ethicon Llc Apparatus and method for dissecting and coagulating tissue
US10034704B2 (en) 2015-06-30 2018-07-31 Ethicon Llc Surgical instrument with user adaptable algorithms
US10154852B2 (en) 2015-07-01 2018-12-18 Ethicon Llc Ultrasonic surgical blade with improved cutting and coagulation features
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US10245064B2 (en) 2017-06-19 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10245065B2 (en) 2018-05-22 2019-04-02 Ethicon Llc Ultrasonic surgical blades

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