JPH0767460B2 - Ultrasonic treatment device - Google Patents
Ultrasonic treatment deviceInfo
- Publication number
- JPH0767460B2 JPH0767460B2 JP61068725A JP6872586A JPH0767460B2 JP H0767460 B2 JPH0767460 B2 JP H0767460B2 JP 61068725 A JP61068725 A JP 61068725A JP 6872586 A JP6872586 A JP 6872586A JP H0767460 B2 JPH0767460 B2 JP H0767460B2
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- treatment rod
- cooling fluid
- treatment
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は結石の破壊や前立腺の切除などの治療に用い
られる超音波処置装置に関する。Description: TECHNICAL FIELD The present invention relates to an ultrasonic treatment device used for treatment such as calculus destruction and prostate resection.
［従来の技術］ 一般に、上述した治療に用いられる超音波処置装置は、
超音波振動する振動子と、この振動子に連設された処置
棒とから構成されている。このような構造の超音波処理
装置においては、処置棒が振動子によって超音波振動さ
せられることによりかなり高温度に加熱されることが避
けられない。これは、処置棒に超音波振動による曲げ応
力が繰返して加わることによって発熱するからであり、
その発熱は上記処置棒に形成される定在波の節の部分が
最も大きくなる。[Prior Art] Generally, an ultrasonic treatment device used for the above-mentioned treatment is
It is composed of a vibrator that vibrates ultrasonically and a treatment rod connected to the vibrator. In the ultrasonic processing apparatus having such a structure, it is inevitable that the treatment rod is ultrasonically vibrated by the vibrator to be heated to a considerably high temperature. This is because bending stress due to ultrasonic vibration is repeatedly applied to the treatment rod to generate heat,
The heat generation is greatest at the node portion of the standing wave formed on the treatment rod.
そこで、このような超音波処置装置においては、その処
置棒をたとえば特公昭47−39177号公報に示されるよう
な手段で冷却することが行なわれている。すなわち、従
来の冷却手段は、処置棒をカバーで覆い、このカバーの
一端からその内部に冷却流体を供給し、他端から排出し
て上記処置棒を冷却していた。Therefore, in such an ultrasonic treatment device, the treatment rod is cooled by a means as disclosed in, for example, Japanese Patent Publication No. 47177/1972. That is, in the conventional cooling means, the treatment rod is covered with a cover, the cooling fluid is supplied to the inside from one end of the cover, and is discharged from the other end to cool the treatment rod.
［発明が解決しようとする問題点］ ところで、このような超音波処置装置においては、振動
子に加える電力を変えてその振動子の振動を制御しなが
ら使用することがあり、そのような場合、処置棒は振動
子に加えられる電力に応じてその発熱量が異なってく
る。[Problems to be Solved by the Invention] By the way, in such an ultrasonic treatment device, the electric power applied to the vibrator may be changed and used while controlling the vibration of the vibrator. In such a case, The amount of heat generated by the treatment rod varies depending on the electric power applied to the vibrator.
しかしながら、従来技術においては、常に一定量の冷却
流体を上記カバー内へ供給しているだけであった。その
ため、振動子に加えられる電力を変えて処置棒の振動を
制御した場合、冷却固体の流量が一定であると、その処
置棒を確実に冷却できないということがある。However, in the conventional technique, a constant amount of cooling fluid is always supplied into the cover. Therefore, when the vibration of the treatment rod is controlled by changing the electric power applied to the vibrator, if the flow rate of the cooling solid is constant, the treatment rod may not be cooled reliably.
この発明は、処置棒の全長を効率よく均一に冷却するこ
とができるようにした超音波処置装置を提供することを
目的とする。An object of the present invention is to provide an ultrasonic treatment device capable of efficiently and uniformly cooling the entire length of a treatment rod.
［問題点を解決するための手段及び作用］ この発明は、超音波振動する振動子と、この振動子に連
設された処置棒と、この処置棒に挿着され冷却流体が供
給される流路を有する保護カバーとを備えた超音波処置
装置において、上記振動子に加える電力の増減に応じて
上記流路に供給される冷却流体の流量の増減を制御する
制御手段が設けられていることを特徴とする。[Means and Actions for Solving Problems] The present invention relates to a vibrator that vibrates ultrasonically, a treatment rod that is connected to the vibrator, and a flow that is inserted into the treatment rod and is supplied with a cooling fluid. In an ultrasonic treatment device having a protective cover having a passage, control means is provided for controlling increase / decrease in flow rate of cooling fluid supplied to the flow passage in accordance with increase / decrease in electric power applied to the vibrator. Is characterized by.
［実施例］ 以下、この発明の一実施例を図面を参照して説明する。
第１図に示す超音波処置装置は一端面が開放した筒状の
ケーシング１を備えている。このケーシング１には振動
子３が内蔵されている。この振動子３の先端にはホーン
５が連設されている。この振動子３とホーン５とはＯリ
ング４を介して上記ケーシング１内に微動自在に保持さ
れている。また、このホーン５は上記ケーシング１の先
端開口から突出されており、その突出された先端に処置
棒２が装着されている。この処置棒２は中空パイプから
なり、その中空部2aがホーン５内に穿設された吸引穴5a
に連通されている。この吸引穴5aは振動子３を貫通して
その後端に突設された接続管3aに連通されている。この
接続管3aはＯリング４を介してケーシング１に支持され
ている。また、この接続管3aケーシング１から後方へ突
出され、その突出端にはチューブ６が接続されている。
なお、同図中７は上記振動子３に接続されたコードであ
る。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
The ultrasonic treatment device shown in FIG. 1 is provided with a cylindrical casing 1 whose one end surface is open. A vibrator 3 is built in the casing 1. A horn 5 is connected to the tip of the vibrator 3. The vibrator 3 and the horn 5 are finely held in the casing 1 through an O-ring 4. The horn 5 is projected from the tip opening of the casing 1, and the treatment rod 2 is attached to the projected tip. The treatment rod 2 is made of a hollow pipe, and the hollow portion 2a is a suction hole 5a formed in the horn 5.
Is in communication with. The suction hole 5a penetrates the vibrator 3 and communicates with a connecting pipe 3a that is provided at the rear end of the vibrator 3a. The connecting pipe 3a is supported by the casing 1 via an O-ring 4. The connecting pipe 3a is projected rearward from the casing 1, and a tube 6 is connected to the projecting end.
Reference numeral 7 in the figure is a cord connected to the vibrator 3.
上記処置棒２には保護カバー８が装着されている。この
保護カバー８は上記処置棒２よりも大径な内管９と、こ
の内管９が内部に挿通された外管11とからなる。上記内
管９の基端部は漏斗状のテーパ部12に形成され、このテ
ーパ部12の端部内周面にはめねじ13が形成されている。
そして、この内管９はそのめねじ13を上記ケーシング１
の外周面に形成されたおねじ14に螺合させて取付けられ
ている。なお、上記ホーン５の先端部は上記内管９のテ
ーパ部12にＯリング４によって微振動自在に支持されて
いる。A protective cover 8 is attached to the treatment rod 2. The protective cover 8 includes an inner tube 9 having a diameter larger than that of the treatment rod 2 and an outer tube 11 having the inner tube 9 inserted therein. A proximal end portion of the inner pipe 9 is formed into a funnel-shaped tapered portion 12, and an internal thread 13 is formed on an inner peripheral surface of an end portion of the tapered portion 12.
The inner pipe 9 has the female screw 13 in the casing 1
It is attached by being screwed onto a male screw 14 formed on the outer peripheral surface of the. The tip portion of the horn 5 is supported by the taper portion 12 of the inner tube 9 by the O-ring 4 so as to be capable of slight vibration.
上記内管９はこれよりも十分に大径な外管11に挿入され
ている。この外管11の基端にはめねじ15が形成されてい
る。そして、この外管15は、そのめねじ15を上記テーパ
部12の先端部に形成されたおねじ16に螺合して取付けら
れている。したがって、上記内管９の外周面と外管11の
内周面との間には第１の流路17が形成され、上記処置棒
２と内管９の内周面との間には第２の流路18が形成され
ている。なお、処置棒２はその先端部が内管９と外管11
の先端面からわずかに突出している。The inner pipe 9 is inserted into an outer pipe 11 having a diameter sufficiently larger than this. A female screw 15 is formed on the proximal end of the outer tube 11. The outer pipe 15 is attached by screwing the female screw 15 thereof into a male screw 16 formed at the tip of the taper portion 12. Therefore, the first flow path 17 is formed between the outer peripheral surface of the inner tube 9 and the inner peripheral surface of the outer tube 11, and the first flow path 17 is formed between the treatment rod 2 and the inner peripheral surface of the inner tube 9. Two channels 18 are formed. The distal end of the treatment rod 2 has an inner pipe 9 and an outer pipe 11.
Slightly protruding from the tip surface of.
上記処置棒２には上記振動子３によって第２図に示すよ
うな複数の節を有する超音波振動の定在波が形成され
る。上記内管９の上記処置棒２の定在波の節に対応する
部分には第１の流路17と第２の流路18とを連通する通孔
19が形成されている。また、上記外管11の基端部には上
記第１の流路17に冷却流体を供給する供給管21が接続さ
れている。したがって、上記供給管21から第１の流路17
に供給された冷却流体は、第１図に矢印で示すように上
記通孔19の箇所、つまり定在波の節に対応する箇所から
第２の流路18に流入し、内管９の先端面からたとえば体
腔内に流出する。体腔内に流出した冷却流体は上記処置
棒２の中空部2aを通ってチューブ６に吸引されるように
なっている。A standing wave of ultrasonic vibration having a plurality of nodes as shown in FIG. 2 is formed on the treatment rod 2 by the vibrator 3. A through hole that connects the first flow path 17 and the second flow path 18 to the portion of the inner pipe 9 corresponding to the node of the standing wave of the treatment rod 2.
19 are formed. A supply pipe 21 for supplying a cooling fluid to the first flow path 17 is connected to the base end of the outer pipe 11. Therefore, from the supply pipe 21 to the first flow path 17
The cooling fluid supplied to the second pipe 18 flows into the second flow passage 18 from the position of the through hole 19, that is, the position corresponding to the node of the standing wave, as shown by the arrow in FIG. For example, it flows out into the body cavity from the surface. The cooling fluid flowing out into the body cavity is sucked into the tube 6 through the hollow portion 2a of the treatment rod 2.
上記供給管21に供給される冷却流体の流量は第３図に示
す制御部25によって制御されるようになっている。すな
わち、制御部25は上記振動子３に上記コード７によって
接続された電力検知器26を有する。この電力検知器26
は、パワーアンプ27を介して発振回路28に接続されてい
る。この発振回路28は上記振動子３を励起する励起信号
を発生する。また、上記電力検知器26で振動子３に印加
した電力が検知され、この検知信号は流量制御系29に入
力される。この流量制御系29は振動子３に印加した電力
に応じた処置棒２の発熱量を算出し、その算出値に応じ
て処置棒２を冷却するに必要な流量が上記供給管21に供
給されるよう流量可変ポンプ31を制御する。この流量可
変ポンプ31には第１の温度検出器32、冷却器33、吸引組
織回収器34および第２の温度検出器35が順次配管接続さ
れ、この第２の温度検出器35に上記処置棒２の中空部2a
に連通したチューブ６が接続されている。すなわち、処
置棒２を冷却する冷却流体は上記流量可変ポンプ31によ
って循環させられるようになっている。上記第２の温度
検出器35では冷却器33によって冷却される前の冷却流体
の温度が検出され、上記第１の温度検出器32では上記冷
却器33によって冷却された冷却流体の温度が検出され
る。これらの検出信号は温度制御系36に入力される。こ
の温度制御系36は上記第１、第２の温度検出器32、35か
らの検出信号に応じて上記冷却器33の冷却能力を制御す
るようになっている。また、上記第１の温度検出器32に
よる検出信号は上記流量制御系29に入力される。そし
て、第１の温度検出器32が検出する冷却流体の温度に応
じて流量可変ポンプ31の能力を制御するようになってい
る。すなわち、この制御部25は冷却流体によって処置棒
２が所定温度に冷却されるようその流量を制御するよう
になっている。The flow rate of the cooling fluid supplied to the supply pipe 21 is controlled by the control unit 25 shown in FIG. That is, the control unit 25 has the power detector 26 connected to the vibrator 3 by the cord 7. This power detector 26
Are connected to an oscillation circuit 28 via a power amplifier 27. The oscillator circuit 28 generates an excitation signal for exciting the oscillator 3. Further, the power applied to the vibrator 3 is detected by the power detector 26, and this detection signal is input to the flow rate control system 29. The flow rate control system 29 calculates the heat generation amount of the treatment rod 2 according to the electric power applied to the vibrator 3, and the flow amount required to cool the treatment rod 2 is supplied to the supply pipe 21 according to the calculated value. The variable flow rate pump 31 is controlled so as to control the flow rate. A first temperature detector 32, a cooler 33, a suctioned tissue recovery device 34, and a second temperature detector 35 are sequentially connected to the variable flow rate pump 31 by piping, and the second temperature detector 35 is connected to the treatment rod. 2 hollow part 2a
The tube 6 communicating with is connected. That is, the cooling fluid that cools the treatment rod 2 is circulated by the variable flow rate pump 31. The second temperature detector 35 detects the temperature of the cooling fluid before being cooled by the cooler 33, and the first temperature detector 32 detects the temperature of the cooling fluid cooled by the cooler 33. It These detection signals are input to the temperature control system 36. The temperature control system 36 controls the cooling capacity of the cooler 33 according to the detection signals from the first and second temperature detectors 32 and 35. The detection signal from the first temperature detector 32 is input to the flow rate control system 29. The capacity of the variable flow rate pump 31 is controlled according to the temperature of the cooling fluid detected by the first temperature detector 32. That is, the control unit 25 controls the flow rate of the treatment rod 2 so that the treatment rod 2 is cooled to a predetermined temperature by the cooling fluid.
このような構造の超音波処置装置においては、前立腺の
切除や結石の破壊などを行なうとき、制御部25の発振回
路28と流量可変ポンプ31とを作動させる。発振回路28が
作動することによって振動子３が振動し、この振動に処
置棒２が連動する。また、流量可変ポンプ31が作動する
ことによって冷却流体が供給管21から第１の流路17に供
給される。第１の流路17に流入した冷却流体は内管９に
形成された通孔19から第２の流路18に流入し、処置棒２
を冷却する。In the ultrasonic treatment device having such a structure, the oscillator circuit 28 and the flow rate variable pump 31 of the control unit 25 are operated when excising the prostate or breaking a calculus. When the oscillation circuit 28 operates, the vibrator 3 vibrates, and the treatment rod 2 interlocks with this vibration. The cooling fluid is supplied from the supply pipe 21 to the first flow path 17 by operating the variable flow rate pump 31. The cooling fluid that has flowed into the first flow path 17 flows into the second flow path 18 from the through hole 19 formed in the inner pipe 9, and the treatment rod 2
To cool.
ところで、上記通孔19は上記処置棒２に形成される超音
波振動の定在波の節の部分に対応して形成されている。
したがって、第１の流路17に流入した冷却流体は処置棒
の最も発熱の大きな複数の節の部分を直接冷却すること
になるから、この処置棒２を全長にわたってほぼ均一に
冷却することができる。すなわち、第１の流路17に流入
した冷却流体は処置棒２の複数の節に対応する部分で分
流して第２の流路18に流入するから、処置棒２の各部分
が均一温度の冷却流体によってほぼ均一に冷却されるこ
とになる。By the way, the through hole 19 is formed corresponding to the node portion of the standing wave of the ultrasonic vibration formed in the treatment rod 2.
Therefore, the cooling fluid flowing into the first flow path 17 directly cools a plurality of nodes of the treatment rod having the largest heat generation, so that the treatment rod 2 can be cooled substantially uniformly over the entire length. . That is, the cooling fluid that has flowed into the first flow path 17 is split at the portions of the treatment rod 2 that correspond to the plurality of nodes and flows into the second flow passage 18, so that each portion of the treatment rod 2 has a uniform temperature. It will be cooled almost uniformly by the cooling fluid.
また、冷却流体は処置棒２を所定の温度に冷却するよう
流量可変ポンプ31によって流量が制御されるから、この
ことによって上記処置棒２が設定温度に良好に冷却され
ることになる。Further, since the flow rate of the cooling fluid is controlled by the variable flow rate pump 31 so as to cool the treatment rod 2 to a predetermined temperature, the treatment rod 2 is satisfactorily cooled to the set temperature.
なお、上記一実施例では内管にテーパ部を形成し、この
テーパ部をホーンのカバーとして利用するようにした
が、上記テーパ部を内管と別体に形成し、このテーパ部
をケーシングに取付けたのち、このテーパ部に上記内管
を適宜の手段で取付けるようにしてもよい。In the above embodiment, the inner pipe is formed with a taper portion, and the taper portion is used as a cover of the horn. After mounting, the inner pipe may be mounted on the tapered portion by an appropriate means.
以上述べたようにこの発明は、流路に供給される冷却流
体の流量を上記振動子に加える電力に応じて制御するよ
うにした。As described above, according to the present invention, the flow rate of the cooling fluid supplied to the flow path is controlled according to the electric power applied to the vibrator.
そのため、上記振動子に加える電力に応じて処置棒の発
熱量が異なっても、それに応じて冷却流体の流量が制御
されるから、上記振動子を確実に冷却することができ
る。Therefore, even if the amount of heat generated by the treatment rod changes depending on the electric power applied to the vibrator, the flow rate of the cooling fluid is controlled accordingly, so that the vibrator can be reliably cooled.
図面はこの発明の一実施例を示し、第１図は保護カバー
を断面した側面図、第２図は処置棒に生じる定在波の説
明図、第３図は冷却流体の流量を制御する制御部の説明
図である。 ２……処置棒、３……振動子、８……保護カバー、９…
…内管、11……外管、17……第１の流路、18……第２の
流路、19……通孔、25……制御部、31……流量可変ポン
プ。The drawings show an embodiment of the present invention. FIG. 1 is a side view of a cross section of a protective cover, FIG. 2 is an explanatory view of standing waves generated in a treatment rod, and FIG. 3 is control for controlling a flow rate of a cooling fluid. It is explanatory drawing of a part. 2 ... Treatment rod, 3 ... Transducer, 8 ... Protective cover, 9 ...
… Inner pipe, 11 …… Outer pipe, 17 …… First flow passage, 18 …… Second flow passage, 19 …… Through hole, 25 …… Control section, 31 …… Variable flow pump.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 生田 英嗣 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 (72)発明者 藤森 弘善 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Ikuta 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Hiroyoshi Fujimori 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.
Claims (1)
設された処置棒と、この処置棒に挿着され冷却流体が供
給される流路を有する保護カバーとを備えた超音波処置
装置において、上記振動子に加える電力の増減に応じて
上記流路に供給される冷却流体の流量の増減を制御する
制御手段が設けられていることを特徴とする超音波処置
装置。1. An ultrasonic wave comprising: a vibrator that vibrates ultrasonically; a treatment rod connected to the vibrator; and a protective cover that is inserted into the treatment rod and has a flow path to which a cooling fluid is supplied. The ultrasonic treatment device, wherein the treatment device is provided with control means for controlling the increase and decrease of the flow rate of the cooling fluid supplied to the flow passage in accordance with the increase and decrease of the electric power applied to the transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61068725A JPH0767460B2 (en) | 1986-03-28 | 1986-03-28 | Ultrasonic treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61068725A JPH0767460B2 (en) | 1986-03-28 | 1986-03-28 | Ultrasonic treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227343A JPS62227343A (en) | 1987-10-06 |
| JPH0767460B2 true JPH0767460B2 (en) | 1995-07-26 |
Family
ID=13382057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61068725A Expired - Lifetime JPH0767460B2 (en) | 1986-03-28 | 1986-03-28 | Ultrasonic treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767460B2 (en) |
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1986
- 1986-03-28 JP JP61068725A patent/JPH0767460B2/en not_active Expired - Lifetime
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|---|---|
| JPS62227343A (en) | 1987-10-06 |
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