JPH0621450Y2 - Ultrasonic surgical instrument - Google Patents

Ultrasonic surgical instrument

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Publication number
JPH0621450Y2
JPH0621450Y2 JP1990072051U JP7205190U JPH0621450Y2 JP H0621450 Y2 JPH0621450 Y2 JP H0621450Y2 JP 1990072051 U JP1990072051 U JP 1990072051U JP 7205190 U JP7205190 U JP 7205190U JP H0621450 Y2 JPH0621450 Y2 JP H0621450Y2
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portion
surgical instrument
protective cover
body
ultrasonic vibration
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JPH0430508U (en
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鎮男 二宮
昌宏 秋保
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アロカ株式会社
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Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は、超音波手術器、特に、患部に超音波振動を伝達させ、患部の組織を破砕・吸引して生体内の患部組織を取り除く超音波手術器に関する。 Description of invention] [Field of the Industrial present invention is an ultrasonic surgical instrument, in particular, to transmit the ultrasonic vibration to the affected area to remove the diseased tissue in a living body by crushing and suction diseased tissue It relates to an ultrasonic surgical instrument.

[従来の技術] 現在、医療分野において、広範囲に利用されている超音波手術器では、振動子で発生した超音波振動をホーンなどによって振幅を増幅して患部に伝達し、その生体組織、例えば結石などを破砕すると共に破砕した組織片を吸引している。 [Prior Art] Currently, in the medical field, the ultrasonic surgical instrument have been extensively utilized, the ultrasonic vibration generated by the vibrator is transmitted to the affected area by amplifying the amplitude by like horn, the living tissue, for example, It is aspirated crushed tissue pieces with crushed stones or the like.

そして、この種の超音波手術器によれば、使用される超音波振動は比較的硬い物質などに振動が伝達されるという性質から、弾力性のある組織では振動が吸収されて破砕されないので、比較的軟組織が多くかつ血管や神経に富んだ部分の手術、例えば脳外科手術や肝臓等の腹部外科手術に有効である。 Then, according to the kind of the ultrasonic surgical instrument, the nature of ultrasonic vibration vibration such as a relatively hard material used is transmitted, because it is not crushed been absorbed vibration is resilient tissue, relatively soft tissue lot and portion of the surgical rich blood vessels and nerves, for example useful in abdominal surgery such as brain surgery and liver.

すなわち、この超音波手術器は体腔内の結石の破砕・吸引あるいは血栓、血腫等を吸引することに利用され、体腔内から異物を取り除くために使われている。 That is, the ultrasonic surgical instrument is utilized to suction crushing and suction or thrombus calculus in the body cavity, hematoma and the like, are used to remove foreign matter from the body cavity.

第3図及び第4図には、従来における超音波手術器の一例が示されており、第3図は、超音波手術器の断面を示した側面図であり、以下第3図(a)の構成及び作用を説明する。 The FIGS. 3 and 4, are one example of the ultrasonic surgical instrument is shown in a conventional, FIG. 3 is a side view showing a cross section of the ultrasonic surgical instrument, following FIG. 3 (a) illustrating the configurations and functions.

図において、振動子部12は、振動子10とホーン14 In the figure, the vibrator 12, the vibrator 10 and the horn 14
とから構成されており、振動子10の一端(本体側)には図示しない発振部が接続されており、振動子10はその発振部から出力される電気信号を超音波振動に変換する。 Are composed of a, the one end of the vibrator 10 (the main body) by a not-shown oscillation unit is connected, the transducer 10 converts the electrical signal outputted from the oscillating unit to the ultrasonic vibration.

そして、振動子10の他端には円錐型のホーン14が設けられており、ホーン14は、振動子10で発生した超音波振動を入力して組織を破砕可能なレベルまで振幅を増幅するようになっている。 Then, the other end of the vibrator 10 is provided with a horn 14 of the conical horn 14, to amplify the amplitude of the tissue by entering the ultrasonic vibration generated by the vibrator 10 to fracture levels It has become.

更に、ホーン14の先端には、針金状の可撓性を有する伝達部18が設けられており、伝達部18は、その先端が患部に当接することにより増幅された超音波振動を患部20に伝達することができる。 Further, the distal end of the horn 14, transmitting portion 18 having a wire-like flexible is provided, transmitting unit 18, the ultrasonic vibration is amplified by the tip comes into contact with the affected area in the affected area 20 it can be transmitted.

また、伝達部18の外周には、可撓性を有する円筒状の保護カバー16が伝達部18を包囲するように設けられ、これにより屈曲可能な所望部位へ挿入できる挿入管22が構成されている。 Further, the outer periphery of the transmission portion 18, a flexible cylindrical protective cover 16 having a is provided so as to surround the transmission portion 18, thereby being configured insertion tube 22 can be inserted into a desired site bendable there. 保護カバー16は、患部20を破砕後、その組織片を吸引するために、保護カバー16 Protective cover 16, after breaking the affected part 20, to aspirate the tissue pieces, the protective cover 16
の内壁と伝達部18との間に所定間隔を有している。 And it has a predetermined distance between the inner wall of and the transmission unit 18.

次に動作について説明する。 Next, the operation will be described.

生体内に有する異物としての組織を破砕・吸引して取り除くため、手術者は所望部位に挿入管22を挿入する。 To remove tissue as a foreign matter having in vivo by crushing and suction, the operator inserts the insertion tube 22 into a desired site.

そして、図示しない発振部から出力された電気信号が振動子部12に供給され、振動子10は超音波振動する。 The electric signal output from the oscillation unit (not shown) is supplied to the vibrator portion 12, the vibrator 10 vibrates ultrasonically.

それから、振動子10によって得られた超音波振動はホーン14により所定レベルまで増幅され、増幅された超音波振動は、例えば10倍程度増幅された振幅を得ることができ、伝達部18によりその先端へ伝達される。 Then, ultrasonic vibration is obtained by the transducer 10 is amplified by the horn 14 to a predetermined level, the ultrasonic vibration is amplified can be obtained amplified amplitude, for example, about 10-fold, the front end by the transmission unit 18 It is transmitted to.

更に、挿入管22は、患部20付近まで挿入されているので、伝達部18の先端を手術者が手動で操作して生体組織である患部20に接触させ、増幅された超音波振動の衝撃を与えて、患部20の組織を破砕する。 Further, the insertion tube 22, because it is inserted to the vicinity of the affected area 20, the distal end of the transmission portion 18 operator operates manually brought into contact with the affected part 20 is a biological tissue, an amplified impact of the ultrasonic vibration given, to crush the organization of the affected area 20.

その後、保護カバー16の内壁と伝達部18との間の間隙からホーン14先端部に接続される吸引器(図示せず)により破砕された組織片を吸引する。 Then, to suck the piece of tissue is disrupted by an aspirator connected to the horn 14 tip from the gap between the inner wall of the protective cover 16 and the transmission unit 18 (not shown).

この結果、患部20を破砕・吸引することにより体腔内から取り除くことができ、挿入された挿入管22を体腔内から抜くことにより手術が終了する。 This result can be removed from the body cavity by crushing and sucking the affected part 20, operation is completed by removing the insertion tube 22 inserted from the body cavity.

[考案が解決しようとする課題] 従来の超音波手術器において、挿入管22は屈曲可能であるため、伝達部18の先端が患部20に当接した場合に、第3図(b)に示すように、伝達部18は保護カバー16内で撓み、保護カバー16の先端が患部20に触れてしまい、伝達部18の先端と患部20とが十分接触せず、増幅された超音波振動を有効に伝達できなくなり、これにより患部20を確実に破砕できないという不具合があった。 Assignments devised to be Solved] In the conventional ultrasonic surgical instrument, since the insertion tube 22 can be bent, when the leading end of the transmission portion 18 is in contact with the affected area 20, shown in FIG. 3 (b) as described above, the transmitting portion 18 bending in the protective cover 16, the tip of the protective cover 16 will touch the affected area 20, the tip and the affected area 20 and does not sufficiently contact the transfer unit 18, enable the ultrasonic vibration is amplified can not be transmitted to, this way there is a problem that can not be reliably crush the affected area 20.

そこで、上記不具合を解決するため、従来では第4図(a)に示すように、保護カバー17を短くしていた。 To solve the above problem, the conventional has been shortened as shown in 4 (a), a protective cover 17.
この場合、伝達部18が撓んでも、保護カバー17先端から露出される伝達部18が長くなり、第4図(b)に示すように、患部20と伝達部18とを十分接触させることができるようになった。 In this case, also deflected transmitting section 18, transmitting section 18 becomes long, which is exposed from the protective cover 17 tip, as shown in FIG. 4 (b), be sufficiently contacted with the affected area 20 and the transmitting section 18 It became so possible.

しかし、患部20の破砕後において、破砕された組織片を吸引するときは、組織片と吸引口Bとの距離が遠くなるため、充分に組織片を吸引することができないという不具合があった。 However, after the crushing of the affected part 20, when sucking the crushed tissue pieces, the distance between the suction port B and the tissue piece becomes longer, there is a problem that can not be sucked sufficiently tissue pieces.

また、保護カバー17を短くしたために、伝達部18の露出部分が長くなるので、例えば挿入管22を挿入する際に、体腔内の患部以外の生体組織に伝達部18の露出部が触れて組織を傷つけてしまう場合があった。 Further, in order to shorten the protective cover 17, the exposed portion of the transmission portion 18 is increased, for example when inserting the insertion tube 22, the exposed portion of the transmission portion 18 to the living tissue other than the affected part in the body cavity is touching the tissue there have been cases where the cause hurt.

考案の目的 本考案は、上記従来の課題に鑑みなされたものであり、 Purpose of the invention of the invention has been made in view of the above-mentioned conventional problems,
その目的は、可撓性を有する伝達部が保護カバー内で撓んでも伝達部を患部に確実に当接させて患部を確実に破砕・吸引でき、更に患部以外の部位に伝達部が接触することを防止する超音波手術器を提供することにある。 Its purpose is deflected by the transfer unit in a protective cover having a flexible also reliably crushing and suction diseased reliably brought into contact with the affected area transmission unit, the transmission unit contacts further a part other than the affected area It is to provide an ultrasonic surgical instrument to prevent.

[課題を解決するための手段] 上記目的を達成させるために、本考案に係る超音波手術器は、発振部から出力される電気信号を超音波振動に変換する装置本体内に配置された振動子部と、発生した超音波振動を患部に伝達する可撓性を有する伝達部と、伝達部を包囲・保護して伝達部と生体内組織との接触を防止する可撓性を有する保護カバー部と、保護カバー部の基端部に接続され外周面の一部にねじ部が形成されて装置本体に対して摺動のみ自在に被嵌されたケース部と、 In order to achieve the above object [Means for Solving the Problems], ultrasonic surgical instrument according to the present invention, the vibration which is disposed an electric signal output from the oscillator in the apparatus main body to be converted to ultrasonic vibration protective cover having a terminal portion, a transmitting portion having flexibility to transmit the ultrasonic vibration generated in the affected area, the flexibility to prevent contact with surrounding and protection to transfer part and in vivo tissue transmitting unit and parts, and the casing portion which is fitted freely only slide relative to a part to the threaded portion the apparatus body is formed of a connected peripheral surface on the base end portion of the protective cover section,
ケース部のねじ部に螺合する内周面の一部にねじ部を有しかつ装置本体に対して回転のみ自在に外嵌されたカラー部とを有し、カラー部を回転することによりケース部と保護カバー部とが一体に進退して伝達部を露出・被覆することを特徴としている。 Some of the inner peripheral surface screwed into the threaded portion of the case portion has a threaded portion and having a collar portion which is fitted to freely rotate only the apparatus body, case by rotating the collar parts and the protective cover portion and is characterized by exposing, covering the transmission portion to advance and retreat together.

[作用] 以上のような構成としたので、本考案に係る超音波手術器は、発振部から出力される電気信号を装置本体内に配置された振動子部により超音波振動に変換し、発生した超音波振動を可撓性を有する伝達部により患部に伝達し、超音波振動を利用して生体内の生体組織を破砕・吸引する。 Since the [action] above configuration, an ultrasonic surgical instrument according to the present invention, due vibrator unit an electric signal outputted disposed in the apparatus main body by the oscillator into a ultrasonic vibration generator the ultrasonic vibration is transmitted to the affected area by the transmission unit having flexibility, and use crushing and suction the living tissue in vivo ultrasonic vibrations. この際、カラー部を回転することによりケース部と保護カバー部とが装置本体に対して一体に後退して伝達部を露出し、また伝達部を生体内へ挿入する際は、 At this time, to expose the transfer unit retreats integrally with the apparatus main body and a protective cover case portion by rotating the collar, also when inserting the transmission part to the living body,
カラー部を回転することによりケース部と保護カバー部とが装置本体に対して一体に進出して伝達部を被覆する。 A case portion and the protective cover unit covers the transmission section and advanced integrally with the device body by rotating the collar.

[実施例] 第2図(a)は、本考案の一実施例における超音波手術器の断面図を示しており、第2図(b)は、その外観図を示している。 [Example] FIG. 2 (a) shows a cross-sectional view of an ultrasonic surgical instrument according to an embodiment of the present invention, FIG. 2 (b) shows an external view thereof being shown.

超音波手術器は、図示しない発振部から出力される電気信号を超音波振動に変換する振動子部12を装置本体2 Ultrasonic surgical instrument, apparatus vibrator unit 12 for converting the electric signal output from the oscillator (not shown) to the ultrasonic vibration body 2
4内に有している。 It has in the 4. この振動子部12は、振動子10とホーン14とから構成され、振動子10はその発振部から出力される電気信号を超音波振動に変換し、またホーン14は、振動子10で発生した超音波振動を受け入れて組織を破砕可能なレベルまで振幅の増幅を行っている。 The vibrator unit 12 is composed of the vibrator 10 and the horn 14., vibrator 10 converts the electrical signal outputted from the oscillating unit to the ultrasonic vibration, and a horn 14, generated by the oscillator 10 and it was amplified amplitude to fracture levels the tissue receiving ultrasonic vibrations.

そして、ホーン14の先端には、針金状の可撓性を有する伝達部18が設けられ、この伝達部18の先端が患部20に当接することにより増幅された超音波振動が患部20に伝達される。 Then, the distal end of the horn 14, transmitting portion 18 having a wire-like flexible is provided, ultrasonic vibration is amplified by the front end of the transmission portion 18 comes into contact with the affected part 20 is transmitted to the affected area 20 that.

更に、伝達部18の外周には、可撓性を有する円筒状の保護カバー16が伝達部18を包囲するように設けられ、これにより屈曲可能な所望部位へ挿入できる挿入管22が構成されている。 Further, the outer periphery of the transmission portion 18, a flexible cylindrical protective cover 16 having a is provided so as to surround the transmission portion 18, thereby being configured insertion tube 22 can be inserted into a desired site bendable there. ここで、保護カバー16には、 Here, the protective cover 16,
患部20を破砕後、その組織片を吸引するために、内壁と伝達部18との間に所定間隙が形成されている。 After crushing the affected part 20, to aspirate the tissue pieces, a predetermined gap is formed between the inner wall and the transfer unit 18.

第1図には、第2図で示した超音波手術器の構造が具体的に示されている。 The first diagram, the structure of the ultrasonic surgical instrument shown in Figure 2 is specifically shown.

第1図(b)において、装置本体24の外周先端部分には、装置本体24とケース30との気密を確保するOリング26を装着するリング溝24aが刻設されると共にリング溝24aの後方長手方向へ長溝24bが刻設され、かつ外周基端部分にはシーリング28が外嵌されている。 In Fig. 1 (b), device in the outer peripheral front end portion of the body 24, the device body 24 and the rear ring groove 24a with the ring groove 24a for mounting the O-ring 26 to secure the airtightness between the case 30 is inscribed longitudinally to the elongated groove 24b is engraved, and on the outer peripheral proximal end portion sealing 28 is fitted.

ここで、保護カバー16は可撓性のあるチューブで形成され、ケース30とキャップ31とで挟持されている。 The protective cover 16 is formed by a tube having flexibility, and is held between the casing 30 and the cap 31.
なお、ケース30は、装置本体24に被嵌されており、 Incidentally, the case 30 is fitted to the apparatus body 24,
ケース30の内側には、装置本体24の長溝24bに嵌入された長円形のスライドストッパ32がねじ34により固定されている。 Inside the casing 30, and is fixed by the slide stopper 32 screw 34 oblong which is fitted into the long groove 24b of the apparatus main body 24. これによりケース30は装置本体2 Thus case 30 apparatus main body 2
4に対して矢印CD方向へ長溝24bの長さ分だけ摺動し得る。 May by the length sliding of the long groove 24b in the arrow CD direction to 4.

更に、ケース30には、ケースのねじ部30aと歯合するねじ部36aを内周面の一部に有するカラー36が外嵌されており、カラー36の基端部には内側に突出する突出部36bが形成されている。 Further, the case 30, collar 36 having a threaded portion 36a for threaded portion 30a meshing with the case in a part of the inner peripheral surface are fitted, the proximal end portion of the collar 36 inwardly projecting protrusion part 36b is formed.

そして、突出部36bがシーリング28に係合することによりカラー36は装置本体24に対して矢印EF方向への回転のみ自在に保持され、カラー36を回転することによりねじ部30a,36aにて回転力は直進力に変換され、ケース30と保護カバー16とが一体に矢印C The collar 36 by the protrusion 36b is engaged with the sealing 28 is held freely rotate only in the arrow EF direction relative to the apparatus main body 24, rotated at the screw section 30a, 36a by rotating the collar 36 force is converted into linear force, arrow C the casing 30 and the protective cover 16 is integrally
D方向へ進退して伝達部18を露出・被覆する。 It moves forward and backward direction D to expose, covering the transmission portion 18.

ついで、本実施例の作用について説明する。 Next, a description will be given of the operation of this embodiment.

挿入管22を所望部位に挿入する前において、手術者がカラー36を矢印F方向へ回転すると、その回転力はケース30のねじ部30aとカラー36のねじ部36aとにより軸方向の移動力に変換され、スライドストッパ3 Before inserting the insertion tube 22 into a desired site, the surgeon rotates the collar 36 in the arrow F direction, the rotation force moving force in the axial direction by the screw portion 36a of the threaded portion 30a and the collar 36 of the case 30 is converted, slide the stopper 3
2が装置本体24の長溝24bの一端に当接するまでケース30と保護カバー16とは一体に矢印D方向へ移動し(第1図(c),(d)参照)、保護カバー16により伝達部18の先端を覆う(第2図(b)参照)。 2 is moved to the long groove 24b of arrow D direction integrally with the casing 30 and the protective cover 16 until it abuts against the one end of the apparatus body 24 (FIG. 1 (c), (d) refer to) the transmission portion by a protective cover 16 18 tip cover (see FIG. 2 (b)).

次に、手術者は生体内に有する異物としての組織を破砕・吸引して取り除くため、所望部位に挿入管22を挿入する。 Next, the operator is to remove by crushing and aspirated tissue as a foreign matter having in the body, inserts the insertion tube 22 into a desired site.

それから、手術者がカラー36を矢印E方向へ回転すると、その回転力はケース30のねじ部30aとカラー3 Then, when the operator rotates the collar 36 in the arrow E direction, the screw portion 30a and the collar 3 of the rotational force case 30
6のねじ部36aとにより軸方向の移動力に変換され、 By a threaded portion 36a of 6 it is converted to a moving force in the axial direction,
スライドストッパ32が装置本体24の長溝24bの他端に当接するまでケース30と保護カバー16とは一体に矢印C方向へ移動し(第1図(a),(b)参照)、 Slide stopper 32 is moved in the direction of arrow C integrally with the casing 30 and the protective cover 16 until it abuts against the other end of the long groove 24b of the apparatus main body 24 (FIG. 1 (a), (b) see)
保護カバー16より伝達部18の先端は十分に露出する(第2図(a)参照)。 The tip of the transmission portion 18 from the protective cover 16 is fully exposed (see FIG. 2 (a)).

更に、図示しない発振部から出力された電気信号が振動子部12に供給され、振動子10は超音波振動する。 Furthermore, the electrical signal output from the oscillation unit (not shown) is supplied to the vibrator portion 12, the vibrator 10 vibrates ultrasonically.

そして、振動子10によって得られた超音波振動はホーン14により所定レベルまで増幅され、増幅された超音波振動は、例えば10倍程度増幅された増幅を得ることができ、伝達部18によりその先端へ伝達される。 Then, ultrasonic vibration is obtained by the transducer 10 is amplified by the horn 14 to a predetermined level, the ultrasonic vibration is amplified can be obtained amplified amplified, for example, about 10-fold, the front end by the transmission unit 18 It is transmitted to.

更に、挿入管22は、患部20付近まで挿入されているので、伝達部18の先端を手術者が手動で操作して生体組織である患部20に接触させ、増幅された超音波振動の衝撃を与えて、患部20の組織を破砕する。 Further, the insertion tube 22, because it is inserted to the vicinity of the affected area 20, the distal end of the transmission portion 18 operator operates manually brought into contact with the affected part 20 is a biological tissue, an amplified impact of the ultrasonic vibration given, to crush the organization of the affected area 20.

その後、再び前述同様の動作により保護カバー16にて伝達部18の先端を覆い(第2図(b)参照)、保護カバー16の内壁と伝達部18との間の間隙からホーン1 Thereafter, the horn 1 again by the above-described same operation covers the tip of the transmission portion 18 with the protective cover 16 (FIG. 2 (b) see), the gap between the inner wall of the protective cover 16 and the transmission portion 18
4先端部に接続される吸引器(図示せず)により破砕された組織片を吸引する。 4 aspirator connected to the tip to aspirate the tissue pieces were crushed by (not shown).

この結果、患部20を生体内から取り除くことができ、 As a result, it is possible to remove the diseased part 20 from the living body,
挿入された挿入管22を生体から抜くことにより手術が終了する。 Surgery is finished by pulling out the inserted insertion tube 22 from the living body.

以上のように、超音波手術器は、本体24を固定した状態でカラー36を回転させることにより、ケース30及びこのケース30に装着された保護カバー16を進退させることができるので、生体内部の組織を傷付けたりすることなく安全に挿入管22を生体内部へ挿入させることが可能である。 As described above, the ultrasonic surgical instrument, by rotating the collar 36 in a state of fixing the body 24, it is possible to advance and retract the case 30 and the protective cover 16 mounted on the casing 30, the internal biological safely insertion tube 22 without damaging the tissue it is possible to insert into the inside of a living body.

また、ケース30の進退は、ケース30に形成されたねじ部36aと、カラー36に形成されたねじ部36aとの噛合により行われるので、カラー36の進退移動を安定かつ確実に行うことが可能である。 The advancing and retracting of the casing 30 includes a threaded portion 36a formed in the case 30, since is performed by engagement of the threaded portion 36a formed in the collar 36, can perform forward and backward movement of the collar 36 in a stable and reliable it is. なお、カラー36 In addition, color 36
の外表面には、進退移動量の指標となる目盛が形成され、操作者は、この目盛にて保護カバー先端部からの伝達部18の突出量を容易に確認できる。 The outer surface is formed graduations indicative of forward and backward movement amount, the operator can easily confirm the amount of projection of the transmission portion 18 from the protective cover tip at this scale.

[考案の効果] 以上のようにして、本考案の超音波手術器によれは、カラー部を回転することによりケース部と保護カバー部とが一体に進退して伝達部を露出・被覆するように構成したので、伝達部の先端を患者へ確実に当接して、超音波振動を有効に伝達することができ、組織片と吸引口との距離を近づけて、十分に組織片を吸引することができ、 [Effect of the invention] In the above manner, according to the ultrasonic surgical instrument of the present invention is such that the protective cover part casing portion is exposed, covering the transmission portion to advance and retreat integrally by rotating the collar since it is configured to, the tip of the transmission portion reliably abuts to the patient, it is possible to effectively transmit ultrasonic vibrations, close the distance between the tissue pieces and the suction port, for sucking the well organized piece It can be,
更に超音波手術器の先端を生体内へ挿入する際に伝達部の先端が患部以外の生体組織に触れることを防止することができる。 It is possible to prevent the tip of the transmission portion touches the body tissue other than the affected area during the further insertion the tip of the ultrasonic surgical instrument into the body.

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

第1図は本考案の超音波手術器の要部を示す図、第2図は本考案の超音波手術器の構成を示す図、第3図及び第4図は従来の超音波手術器の構成及び動作を示す図である。 Figure Figure 1 is showing the main part of the ultrasonic surgical instrument of the present invention, FIG. 2 shows an ultrasonic surgical instrument of the configuration of the present invention, FIGS. 3 and 4 is of a conventional ultrasonic surgical instrument is a diagram illustrating the configuration and operation. 12……振動子部 16……保護カバー 18……伝達部 30……ケース部 36……カラー部 12 ...... vibrator portion 16 ...... protective cover 18 ...... transmission part 30 ...... case portion 36 ...... collar

Claims (1)

    【実用新案登録請求の範囲】 [Range of utility model registration request]
  1. 【請求項1】発振部から出力される電気信号を超音波振動に変換する振動子部と、 前記振動子部にて発生した超音波振動を患部に伝達する可撓性を有する伝達部と、 前記伝達部を包囲して伝達部と生体内組織との接触を防止する可撓性をもった保護カバー部と、を有し、 生体内に挿入した伝達部の先端を患部に当接し、超音波振動にて生体内の組織を破砕する超音波手術器において、 前記保護カバー部の基端部に接続され、外周面の一部にねじ部が形成されて装置本体に対して進退動のみ自在に装置本体に被嵌されたケース部と、 前記ケース部のねじ部に螺合するねじ部を内周面の一部に有しかつ装置本体に対して回転のみ自在に前記ケース部に外嵌されたカラー部と、を有し、 前記カラー部を回転することにより前記ケース部と前記保 And 1. A transducer for converting the electrical signal output to the ultrasonic vibration from the oscillating unit, and a transmitting portion having flexibility to transmit to the affected area the ultrasonic vibration generated by the vibrator unit, wherein the transmission unit surrounds anda protective cover portion having a flexible to prevent contact between the transfer section and the in vivo tissue, in contact with the tip of the transfer portion which is inserted into a living body to the affected area, super in ultrasonic surgical instrument for crushing the raw body tissue at ultrasonic vibration, which is connected to the proximal end of the protective cover section, movable only move forward and backward relative to the outer peripheral surface of the screw portion is formed on a part in the apparatus body a case portion that is fitted to the apparatus body, fitted on the casing portion to freely rotate only with respect to a and the apparatus main body screw portion to be screwed into the screw portion of the case portion in a part of the inner peripheral surface by having a collar portion, the coercive and the case portion by rotating said collar portion カバー部とが一体に進退して前記伝達部を露出・被覆することを特徴とする超音波手術器。 Ultrasonic surgical instrument and the cover portion is characterized by exposing, covering the transmission portion to advance and retreat together.
JP1990072051U 1990-07-05 1990-07-05 Ultrasonic surgical instrument Expired - Lifetime JPH0621450Y2 (en)

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JP1990072051U JPH0621450Y2 (en) 1990-07-05 1990-07-05 Ultrasonic surgical instrument

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JPH0430508U JPH0430508U (en) 1992-03-11
JPH0621450Y2 true JPH0621450Y2 (en) 1994-06-08

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