JPH0464351A - Ultrasonic therapeutic apparatus - Google Patents

Ultrasonic therapeutic apparatus

Info

Publication number
JPH0464351A
JPH0464351A JP2176322A JP17632290A JPH0464351A JP H0464351 A JPH0464351 A JP H0464351A JP 2176322 A JP2176322 A JP 2176322A JP 17632290 A JP17632290 A JP 17632290A JP H0464351 A JPH0464351 A JP H0464351A
Authority
JP
Japan
Prior art keywords
ultrasonic
rotating member
vibration
blade
tip
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.)
Granted
Application number
JP2176322A
Other languages
Japanese (ja)
Other versions
JP2987175B2 (en
Inventor
Tetsumaru Kubota
窪田　哲丸
Tatsuya Kubota
達也 久保田
Mitsumasa Okada
光正 岡田
Hiroaki Kagawa
裕昭 加川
Hiroyuki Kusunoki
楠　博幸
Tomonao Sakurai
友尚 桜井
Toshihiko Suzuta
敏彦 鈴田
Koji Kanbara
神原　浩司
Kenji Yoshino
吉野　謙二
Tadao Hagino
萩野　忠夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP2176322A priority Critical patent/JP2987175B2/en
Publication of JPH0464351A publication Critical patent/JPH0464351A/en
Application granted granted Critical
Publication of JP2987175B2 publication Critical patent/JP2987175B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To achieve higher operability with a smaller size and a less weight of a handpiece by arranging a rotating member having an internal blade at a part corresponding to an external blade to be connected rotatably on the side of a tip of a vibration transmitting member which is inserted into a hood tube having the external blade near the tip thereof to transmit an ultrasonic vibration from an ultrasonic vibrator closer to a user and an ultrasonic motor which drives to rotate the rotating member along a circumferential direction of the vibration transmitting member by an ultrasonic vibration. CONSTITUTION:When an operation of excising a biotissue is preformed in use. an opening of an external blade 12 of a hood tube 11 is made to match the opening of the internal blade 14 of a rotating member 13 and a biotissue to be excised is inserted into the openings thereof. Under such a condition, a circular type ultrasonic motor 15 is driven to rotate the rotating member 13 along a circumferential direction of a vibration transmitting member 8. In this manner, with the rotation of the rotating member 13, the biotissue inserted into both the openings thereof is excised with the external blade 12 of the hood tube 11 and the internal blade 14 of the rotating member 13.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は組織切除用の外刃と内刃とを備えた超音波治
療装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic treatment device equipped with an outer cutter and an inner cutter for tissue resection.

［従来の技術］ 一般に、超音波治療装置として手元側のハンドピース内
に超音波振動子が配設されるとともに、このハンドピー
スに連結された外套管内に振動伝達部材が挿通され、超
音波振動子で発生する超音波振動がこの振動伝達部材を
介して先端部側に伝達される構成のものが知られている
。この場合、超音波振動子は例えばＰＺＴ等の圧電素子
と電極とか積層状態で連結されて構成されている。さら
に、この超音波振動子には略円錐形状のホーンが連結さ
れ、このホーンの先端には管体によって形成された振動
伝達部材か連結されている。そして、超音波振動子で発
生させた超音波振動はホーンおよび振動伝達部材によっ
て生体組織および結石等の破砕作業に必要な振幅に増幅
されるようになっており、この超音波治療装置の使用時
には振動伝達部材の先端を体腔内にある結石や生体組織
等に押し当てて超音波振動させることにより、結石を破
砕したり、生体組織を切除したりするようになっている
。[Prior Art] Generally, as an ultrasonic treatment device, an ultrasonic vibrator is disposed in a handpiece on the proximal side, and a vibration transmitting member is inserted into a mantle tube connected to the handpiece to transmit ultrasonic vibrations. A structure is known in which ultrasonic vibrations generated in the child are transmitted to the distal end side via this vibration transmission member. In this case, the ultrasonic vibrator is configured by connecting a piezoelectric element such as PZT and an electrode in a laminated state. Further, a substantially conical horn is connected to this ultrasonic vibrator, and a vibration transmitting member formed of a tubular body is connected to the tip of the horn. The ultrasonic vibrations generated by the ultrasonic transducer are amplified by the horn and the vibration transmission member to the amplitude necessary for crushing living tissue and stones, etc. When using this ultrasonic treatment device, By pressing the tip of the vibration transmitting member against a stone, living tissue, etc. in a body cavity and generating ultrasonic vibrations, the stone is crushed or the living tissue is excised.

ところで、この種の超音波治療装置として例えば実開昭
６０−３．７３１０号公報に示されているように超音波
振動子の基端部側に電動モータを連結し、このモータに
よって振動伝達部材を超音波振動子とともに一体的に回
転させることにより、生体組織の切除を効率よく行なう
構成のものか開発されている。By the way, as shown in Utility Model Application Publication No. 60-3.7310, an electric motor is connected to the proximal end of an ultrasonic vibrator in this type of ultrasonic treatment device, and the vibration transmission member is controlled by this motor. A structure has been developed that allows efficient ablation of living tissue by rotating the ultrasonic transducer integrally with the ultrasonic transducer.

［発明が解決しようとする課題］ 従来構成のものにあっては手元側の／＼ンドピース内に
配設された超音波振動子の基端部側に電動モータが連結
されていたので、ノ１ンドビースが大形化するとともに
、重量が大きくなり、操作性が悪くなる問題があった。[Problems to be Solved by the Invention] In the conventional structure, an electric motor was connected to the proximal end of the ultrasonic transducer disposed in the hand piece. As the size of the bead increases, the weight increases, resulting in poor operability.

この発明は上記事情に着目してなされたもので、ハンド
ピースを小形軽量化することができ、操作性の向上を図
ることができる超音波治療装置を提供することを目的と
するものである。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an ultrasonic treatment device whose handpiece can be made smaller and lighter, and whose operability can be improved.

［課題を解決するための手段］ この発明は先端部近傍に外刃が形成された外套管と、こ
の外套管の内部に挿通され、手元側の超音波振動子から
の超音波振動を伝達する振動伝達部材と、この振動伝達
部材の先端部側に回転可能に連結され、前記外刃と対応
する部位に内刃が形成された回転部材と、超音波振動に
よってこの回転部材を前記振動伝達部材の周方向に沿っ
て回転駆動する超音波モータとを備えたものである。[Means for Solving the Problems] The present invention includes a mantle tube in which an outer cutter is formed near the tip, and a mantle tube that is inserted into the mantle tube and transmits ultrasonic vibrations from an ultrasonic vibrator on the proximal side. a vibration transmitting member; a rotary member rotatably connected to the distal end side of the vibration transmitting member and having an inner cutter formed in a portion corresponding to the outer cutter; and an ultrasonic motor that rotates along the circumferential direction.

［作用コ 内刃が形成された回転部材を超音波モータによって振動
伝達部材の周方向に沿って回転駆動し、外套管の先端部
近傍に形成された外刃とこの回転部材の内刃とによって
生体組織を切除することにより、ハンドピースを小形軽
量化して操作性の向上を図るようにしたものである。[Operation] The rotating member on which the inner cutter is formed is driven to rotate along the circumferential direction of the vibration transmission member by an ultrasonic motor, and the outer cutter formed near the tip of the mantle tube and the inner cutter of this rotating member By cutting out living tissue, the handpiece can be made smaller and lighter, improving operability.

［実施例］ 以下、この発明の第１の実施例を第１図乃至第３図を参
照して説明する。[Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

第２図は超音波治療装置１の概略構成を示すもので、２
はこの超音波治療装置１の／％ンドビース部である。こ
のハンドピース部２の内部にはランジュバン型の超音波
振動子３が収容されている。FIG. 2 shows a schematic configuration of the ultrasonic treatment device 1.
is the /% bead portion of this ultrasonic treatment device 1. A Langevin-type ultrasonic transducer 3 is housed inside the handpiece section 2 .

この超音波振動子３には例えばＰＺＴ等の圧電素子と電
極とか交互に積層されている。また、この超音波振動子
３の前部には略円錐形状のホーン４、この超音波振動子
３の後部には裏打ち板５がそれぞれ配置されている。こ
の場合、ホーン４の後端面中央部位には取付は軸として
のボルト６の一端部が螺着されている。このボルト６は
超音波振動子３の圧電素子、電極および裏打ち板５の各
中心部にそれぞれ形成されたボルト挿通孔内に挿通され
ている。そして、このボルト６の他端部は裏打ち板５の
後方に延出されており、この延出端部にナツト７が螺着
されてホーン４、超音波振動子３の圧電素子、電極およ
び裏打ち板５が連結状態で保持固定されている。In this ultrasonic vibrator 3, piezoelectric elements such as PZT and electrodes are alternately laminated. Further, a substantially conical horn 4 is disposed at the front of the ultrasonic transducer 3, and a backing plate 5 is disposed at the rear of the ultrasonic transducer 3. In this case, one end of a bolt 6 serving as a mounting shaft is screwed into the center portion of the rear end surface of the horn 4. The bolts 6 are inserted into bolt insertion holes formed at the center of the piezoelectric element, the electrode, and the backing plate 5 of the ultrasonic vibrator 3, respectively. The other end of this bolt 6 extends to the rear of the backing plate 5, and a nut 7 is screwed onto this extended end to connect the horn 4, the piezoelectric element of the ultrasonic vibrator 3, the electrodes, and the backing plate. The plates 5 are held and fixed in a connected state.

また、ホーン４の前端部には管体によって形成された振
動伝達部材８が着脱可能に連結されている。さらに、こ
の振動伝達部材８の管内には吸引管路９が形成されてい
る。この吸引管路９にはホーン４およびボルト６の軸心
部に形成された吸引管路１０が連結されている。Further, a vibration transmitting member 8 formed of a tubular body is removably connected to the front end of the horn 4. Furthermore, a suction conduit 9 is formed within the tube of the vibration transmission member 8 . A suction conduit 10 formed at the central axis of the horn 4 and the bolt 6 is connected to this suction conduit 9 .

また、振動伝達部材８の周囲は外套管１１によって覆わ
れている。この外套管１１の基端部はノ＼ンドビース部
２に連結されている。さらに、この外套管１１の先端部
には生体組織の切除を行なう外刃１２が形成されている
。この外刃１２は外套管１１の先端部に形成された略矩
形状の開口部の端縁部によって形成されている。Further, the periphery of the vibration transmitting member 8 is covered with a mantle tube 11. The proximal end portion of this mantle tube 11 is connected to the nosed bead portion 2 . Furthermore, an outer blade 12 for cutting living tissue is formed at the distal end of the mantle tube 11. The outer cutter 12 is formed by the edge of a substantially rectangular opening formed at the tip of the mantle tube 11.

また、振動伝達部材８の先端部側には円筒状の回転部材
１３が回転可能に連結されている。この回転部材１３に
は外套管１１の外刃１２と対応する部位に内刃１４が形
成されている。この内刃１４は略矩形状の開口部の端縁
部によって形成されている。Further, a cylindrical rotating member 13 is rotatably connected to the distal end side of the vibration transmitting member 8 . The rotating member 13 has an inner cutter 14 formed at a portion corresponding to the outer cutter 12 of the outer tube 11. The inner cutter 14 is formed by the edge of a substantially rectangular opening.

さらに、この回転部材１３は第３図に示す円環形超音波
モータ１５によって振動伝達部材８の周方向に沿って回
転駆動されるようになっている。Furthermore, this rotating member 13 is adapted to be rotationally driven along the circumferential direction of the vibration transmitting member 8 by an annular ultrasonic motor 15 shown in FIG.

この円環形超音波モータ１５のステータ１６には金属材
料によって形成されるリング状の振動体１６ａの底面に
圧電素子１６ｂが接着されている。In the stator 16 of this annular ultrasonic motor 15, a piezoelectric element 16b is bonded to the bottom surface of a ring-shaped vibrating body 16a formed of a metal material.

この圧電素子１６ｂは円周方向に沿って多数に分割して
正負交互に分極処理されており、これらに対応して２組
の電極群が設けられている。さらに、このステータ１６
のリング状振動体１６の上面には超音波モータ１５のロ
ータ１７を形成するリング状の移動体１７ａが加圧接触
されている。この場合、振動伝達部材８の先端部には第
１図に示すように小径な突設部１８が突設されている。This piezoelectric element 16b is divided into a large number of parts along the circumferential direction and polarized alternately between positive and negative parts, and two sets of electrodes are provided corresponding to these parts. Furthermore, this stator 16
A ring-shaped movable body 17a forming the rotor 17 of the ultrasonic motor 15 is brought into pressure contact with the upper surface of the ring-shaped vibrating body 16. In this case, a small-diameter protrusion 18 is protruded from the tip of the vibration transmission member 8, as shown in FIG.

この突設部１８の外周面にはリング状の溝１９が形成さ
れている。そして、この突設部１８のリング状溝１つ内
に回転部材１３の基端部が回転可能に連結されている。A ring-shaped groove 19 is formed on the outer peripheral surface of this protrusion 18 . The proximal end portion of the rotating member 13 is rotatably connected within one ring-shaped groove of the protruding portion 18 .

さらに、回転部材１３の基端部には内方向に突設された
リング状の係合部２０か形成されている。そして、この
係合部２０が振動伝達部材８のリング状溝１９内に挿入
された状態で係合されており、この係合部２０によって
超音波モータ１５のリング状移動体１７ａが形成されて
いる。また、超音波モータ１５のステータ１６は振動伝
達部材８の突設部１８によって形成されるリング状の段
部２１に装着されている。Further, a ring-shaped engagement portion 20 that projects inward is formed at the base end of the rotating member 13. This engaging portion 20 is inserted into and engaged with the ring-shaped groove 19 of the vibration transmission member 8, and the ring-shaped moving body 17a of the ultrasonic motor 15 is formed by this engaging portion 20. There is. Further, the stator 16 of the ultrasonic motor 15 is attached to a ring-shaped step 21 formed by the protrusion 18 of the vibration transmission member 8 .

なお、第１図中で、２２はハンドピース部２内のホーン
４に形成された振動伝達部材８の着脱部、２３はこのハ
ンドピース部２に設けられた送水口である。In FIG. 1, reference numeral 22 indicates an attachment/detachment portion for the vibration transmitting member 8 formed on the horn 4 in the handpiece section 2, and 23 indicates a water inlet provided in the handpiece section 2.

次に、上記構成の作用について説明する。Next, the operation of the above configuration will be explained.

まず、超音波治療装置１の使用時に生体組織の切除作業
を行なう場合には第１図に示すように外套管１１の外刃
１２の開口部と回転部材１３の内刃１４の開口部とを合
致させた状態でこれらの開口部内に切除対象となる生体
組織を挿入する。そして、この状態で円環形超音波モー
タ１５を駆動し、回転部材１３を振動伝達部材８の周方
向に沿って回転させる。このように回転部材１３が回転
すると外套管１１の外刃１２とこの回転部材１３の内刃
１４とによってこれらの両開口部内に挿入された生体組
織が切除される。First, when using the ultrasonic treatment device 1 to cut living tissue, as shown in FIG. The living tissue to be resected is inserted into these openings in a matched state. Then, in this state, the annular ultrasonic motor 15 is driven to rotate the rotating member 13 along the circumferential direction of the vibration transmitting member 8. When the rotary member 13 rotates in this manner, the outer cutter 12 of the mantle tube 11 and the inner cutter 14 of the rotary member 13 resect the living tissue inserted into both of these openings.

そこで、上記構成のものにあっては内刃１４が形成され
た回転部材１３を超音波モータ１５によって振動伝達部
材８の周方向に沿って回転駆動し、外套管１１の先端部
近傍に形成された外刃１２とこの回転部材１３の内刃１
４とによって生体ａａｔを切除するようにしたので、従
来のようにノ＼ンドピース部２内に配設された超音波振
動子３の基端部側に電動モータを連結させた場合に比べ
て／％ンドピース部２を小形軽量化して操作性の向上を
図ることができる。Therefore, in the structure described above, the rotary member 13 on which the inner cutter 14 is formed is driven to rotate along the circumferential direction of the vibration transmission member 8 by the ultrasonic motor 15, and the inner cutter 14 is formed near the tip of the outer mantle tube 11. The outer cutter 12 and the inner cutter 1 of this rotating member 13
4, the living body aat is excised, compared to the conventional case where an electric motor is connected to the proximal end side of the ultrasonic transducer 3 disposed inside the nosepiece part 2. It is possible to reduce the size and weight of the handpiece portion 2 and improve operability.

また、第４図および第５図はこの発明の第２の実施例を
示すものである。Further, FIGS. 4 and 5 show a second embodiment of the present invention.

これは、第４図に示すようにハンドピース部２の内部に
配設された超音波振動子３１として第５図に示すように
一面側に２分割された電極３３゜３４が形成され、他面
側に共通電極３５が形成されるとともに、各電極３３．
３４毎に分極方向を反転させた２組の圧電素子３２を設
け、この超音波振動子３１によって超音波モータ１５の
ステータを兼用させるようにしたものである。この場合
、２組の圧電素子３２．３２の各電極３３．３４間の分
割部３６を一致させ、残留分極の方向を対向させてＵ字
状に形成された２個の電極板３７゜３８を間にして電極
３３．３４を重ね合わせ、中心部に絶縁筒３９を挿通さ
せている。そして、方の圧電素子３２の共通電極３５の
面にはホーン４、他方の圧電素子３２の共通電極３５の
面には共通電極板４０かそれぞれ接合され、この共通電
極板４０には裏打ち板５を接合させてボルト６によって
これらを一体的に固定させている。さらに、電極３３．
３４と共通電極３５とには電極板３７゜３８と共通電極
板４０とを介して図示しない駆動制御回路か接続されて
いる。As shown in FIG. 5, electrodes 33 and 34 divided into two are formed on one side as an ultrasonic transducer 31 disposed inside the hand piece part 2 as shown in FIG. A common electrode 35 is formed on the surface side, and each electrode 33.
Two sets of piezoelectric elements 32 whose polarization directions are reversed are provided every 34, and this ultrasonic vibrator 31 also serves as the stator of the ultrasonic motor 15. In this case, the divided portions 36 between the electrodes 33, 34 of the two sets of piezoelectric elements 32, 32 are aligned, and the two electrode plates 37° 38 formed in a U-shape are formed with the directions of residual polarization facing each other. Electrodes 33 and 34 are overlapped in between, and an insulating tube 39 is inserted through the center. A horn 4 is connected to the surface of the common electrode 35 of one piezoelectric element 32, and a common electrode plate 40 is connected to the surface of the common electrode 35 of the other piezoelectric element 32. are joined together and fixed integrally with bolts 6. Furthermore, electrode 33.
A drive control circuit (not shown) is connected to the common electrode 34 and the common electrode 35 via the electrode plates 37 and 38 and the common electrode plate 40.

そこで、上記構成のものにあっては共通電極板４０に対
して電極板３７．３８に位相制御可能な駆動電源を接続
させ、その駆動周波数をたわみ共振周波数に調節する。Therefore, in the configuration described above, a drive power source whose phase can be controlled is connected to the electrode plates 37 and 38 of the common electrode plate 40, and the drive frequency is adjusted to the deflection resonance frequency.

そして、その位相差をＯにして駆動することにより、励
振電圧を２組の圧電素子３２に同一に印加させ、一方が
延びたとき他方が縮む状態のたわみ共振振動を行なわせ
てホーン４に連結された振動伝達部材８の出力端部に軸
に直角方向の直線運動を行なわせるようになっている。By driving the piezoelectric elements 32 with a phase difference of 0, the same excitation voltage is applied to the two sets of piezoelectric elements 32, causing flexural resonance vibration in which one is extended and the other is contracted, and connected to the horn 4. The output end of the vibration transmitting member 8 is caused to perform linear motion in a direction perpendicular to the axis.

この場合、一方の電極板３７に対し、他方の電極板３８
に印加する駆動電圧の位相を変化させることにより、振
動伝達部材８の出力端部８ａの振動状態を変化させるこ
とができるようになっている。さらに、この振動伝達部
材８の出力′端部８ａには第１の実施例と略同様の回転
部材１３によって形成される超音波モータ１５のロータ
が加圧接触されており、このロータに形成された略矩形
状の開口部の端縁部によって内刃１４が構成されている
。In this case, one electrode plate 37 and the other electrode plate 38
By changing the phase of the drive voltage applied to the vibration transmission member 8, the vibration state of the output end 8a of the vibration transmission member 8 can be changed. Further, a rotor of an ultrasonic motor 15 formed by a rotating member 13 substantially similar to that of the first embodiment is in pressure contact with the output end 8a of the vibration transmitting member 8, and a rotor formed on the rotor is An inner cutter 14 is formed by the edge of the substantially rectangular opening.

したがって、上記構成のものにあっては内刃１４が形成
されたロータを超音波モータ１５によって振動伝達部材
８の周方向に沿って回転駆動し、外套管１１の先端部近
傍に形成された外刃１２とこのロータの内刃１４とによ
って生体組織を切除するようにしたので、第１の実施例
と略同様にハンドピース部２を小形軽量化して操作性の
向上を図ることができる。Therefore, in the structure described above, the rotor on which the inner cutter 14 is formed is rotationally driven along the circumferential direction of the vibration transmission member 8 by the ultrasonic motor 15, and the outer cutter formed near the tip of the mantle tube 11 is rotated by the ultrasonic motor 15. Since the living tissue is cut by the blade 12 and the inner blade 14 of the rotor, the handpiece portion 2 can be made smaller and lighter, and the operability can be improved, substantially similar to the first embodiment.

さらに、第６図はこの発明の第３の実施例を示すもので
ある。Further, FIG. 6 shows a third embodiment of the present invention.

これは、第１の実施例の円環形超音波モータ１５のステ
ータ１６の電極構造を変形させたものである。すなわち
、このステータ１６の圧電素子１６ｂには半径方向に分
割された２組の電極群５１、．５２か設けられている。This is a modification of the electrode structure of the stator 16 of the annular ultrasonic motor 15 of the first embodiment. That is, the piezoelectric element 16b of the stator 16 has two groups of electrodes 51, . There are 52.

この場合、内周部側の電極群５１と外周部側の電極群５
２とは幾何学的にπ／２の位相の異なる振動を励振でき
るように配置されている。In this case, the electrode group 51 on the inner circumference side and the electrode group 5 on the outer circumference side
2 and is arranged so as to be able to excite vibrations that are geometrically different in phase by π/2.

したがって、この場合には超音波モータ１５の動作特性
を向上させることができるので、操作性の一層の向上を
図ることができる。Therefore, in this case, the operating characteristics of the ultrasonic motor 15 can be improved, so that the operability can be further improved.

なお、この発明は上記各実施例に限定されるものではな
い。Note that the present invention is not limited to the above embodiments.

例えば、第７図に示すように第１の実施例の外套管２６
の先端部に形成された外刃２７ａの開口部６１の端縁形
状を略波形に形成しても良く、また第８図に示すように
開口部６２の端縁形状か略楕円形の外刃２７ｂ１或いは
第９図に示すように開口部６３の端縁形状が略矩形の外
刃２７ｃを使用しても良い。さらに、第１０図および第
１１図に示すように第１の実施例の外套管２６の先端部
に傾斜状の切欠部７１を設け、この切欠部７１から外部
側に突没可能に設けられた略球状の研磨具７２゜７３を
それぞれ第１の実施例の超音波モータ１５によって回転
駆動する構成にしても良く、また第１２図に示すように
略円柱状の研磨具７４を第１の実施例の超音波モータ］
５によって回転駆動する構成にしても良い。For example, as shown in FIG.
The edge shape of the opening 61 of the outer cutter 27a formed at the tip of the outer cutter 27a may be formed into a substantially wavy shape, and as shown in FIG. 27b1 or an outer cutter 27c whose opening 63 has a substantially rectangular edge shape as shown in FIG. 9 may be used. Furthermore, as shown in FIGS. 10 and 11, an inclined notch 71 is provided at the distal end of the mantle tube 26 of the first embodiment, and the tube is provided so as to be able to protrude and retract outward from this notch 71. The substantially spherical polishing tools 72 and 73 may each be configured to be rotationally driven by the ultrasonic motor 15 of the first embodiment, and as shown in FIG. Example ultrasonic motor]
5 may be configured to rotate.

さらに、その他この発明の要旨を逸脱しない範囲で種々
変形実施できることは勿論である。Furthermore, it goes without saying that various other modifications can be made without departing from the gist of the invention.

［発明の効果コ この発明によれば内刃が形成された回転部材を超音波モ
ータによって振動伝達部材の周方向に沿って回転駆動し
、外套管の先端部近傍に形成された外刃とこの回転部材
の内刃とによって生体組織を切除するようにしたので、
ハンドピースを小形軽量化することができ、操作性の向
上を図ることができる。[Effects of the Invention] According to this invention, a rotating member on which an inner cutter is formed is rotationally driven along the circumferential direction of the vibration transmission member by an ultrasonic motor, and an outer cutter formed near the tip of the outer tube and this Since the living tissue is removed by the inner blade of the rotating member,
The handpiece can be made smaller and lighter, and operability can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第３図はこの発明の第１の実施例を示すもの
で、第１図は超音波治療装置の要部構成を示す縦断面図
、第２図は超音波治療装置の概略構成を示す縦断面図、
第３図は円環状超音波モータの概略構成を示す斜視図、
第４図および第５図はこの発明の第２の実施例を示すも
ので、第４図は超音波振動子の装着状態を示す縦断面図
、第５図は圧電素子を示す斜視図、第６図はこの発明の
第３の実施例の電極構造を示す平面図、第７図乃至第１
２図はそれぞれ異なる他の実施例の要部構成を示す斜視
図である。 ２・・・ハンドピース部、３・・・超音波振動子、８・
・・振動伝達部材、１１・・・外套管、１２・・・外刃
、１３・・・回転部材、１４・・・内刃、１５・・・超
音波モータ。 出願人代理人　弁理士　坪井　　淳 第 図 ムｎ 第 図 第 図 第 図 第 図 第 図 第 図1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view showing the configuration of main parts of an ultrasonic treatment device, and FIG. 2 is a schematic configuration of the ultrasonic treatment device. A vertical cross-sectional view showing
FIG. 3 is a perspective view showing a schematic configuration of an annular ultrasonic motor;
4 and 5 show a second embodiment of the present invention, in which FIG. 4 is a longitudinal cross-sectional view showing how the ultrasonic transducer is attached, FIG. 5 is a perspective view showing the piezoelectric element, and FIG. FIG. 6 is a plan view showing the electrode structure of the third embodiment of the present invention, and FIGS.
FIG. 2 is a perspective view showing the configuration of main parts of other different embodiments. 2... Hand piece part, 3... Ultrasonic vibrator, 8...
... Vibration transmission member, 11... Outer tube, 12... Outer blade, 13... Rotating member, 14... Inner blade, 15... Ultrasonic motor. Applicant's agent Patent attorney Atsushi Tsuboi

Claims (1)

【特許請求の範囲】 先端部近傍に外刃が形成された外套管と、 この外套管の内部に挿通され、手元側の超音波振動子か
らの超音波振動を伝達する振動伝達部材と、 この振動伝達部材の先端部側に回転可能に連結され、前
記外刃と対応する部位に内刃が形成された回転部材と、 超音波振動によってこの回転部材を前記振動伝達部材の
周方向に沿って回転駆動する超音波モータと を具備したことを特徴とする超音波治療装置。[Scope of Claims] A mantle tube having an outer cutter formed near its tip; a vibration transmission member inserted into the mantle tube and transmitting ultrasonic vibrations from an ultrasonic vibrator on the proximal side; a rotating member rotatably connected to a distal end side of the vibration transmitting member and having an inner cutter formed in a portion corresponding to the outer cutter; An ultrasonic treatment device characterized by comprising an ultrasonic motor that rotates and drives.
JP2176322A 1990-07-05 1990-07-05 Ultrasound therapy equipment Expired - Fee Related JP2987175B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2176322A JP2987175B2 (en) 1990-07-05 1990-07-05 Ultrasound therapy equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2176322A JP2987175B2 (en) 1990-07-05 1990-07-05 Ultrasound therapy equipment

Publications (2)

Publication Number Publication Date
JPH0464351A true JPH0464351A (en) 1992-02-28
JP2987175B2 JP2987175B2 (en) 1999-12-06

Family

ID=16011559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2176322A Expired - Fee Related JP2987175B2 (en) 1990-07-05 1990-07-05 Ultrasound therapy equipment

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