JPH0529697Y2 - - Google Patents
Info
- Publication number
- JPH0529697Y2 JPH0529697Y2 JP1988158494U JP15849488U JPH0529697Y2 JP H0529697 Y2 JPH0529697 Y2 JP H0529697Y2 JP 1988158494 U JP1988158494 U JP 1988158494U JP 15849488 U JP15849488 U JP 15849488U JP H0529697 Y2 JPH0529697 Y2 JP H0529697Y2
- Authority
- JP
- Japan
- Prior art keywords
- working part
- ultrasonic
- ultrasonic vibration
- blade
- biological tissue
- 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
- 230000002262 irrigation Effects 0.000 claims description 15
- 238000003973 irrigation Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 2
- 210000001519 tissue Anatomy 0.000 description 41
- 239000007788 liquid Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 210000004204 blood vessel Anatomy 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 210000000944 nerve tissue Anatomy 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002316 cosmetic surgery Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000001951 dura mater Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、超音波振動により生物組織を切断す
るための外科手術用具に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a surgical tool for cutting biological tissue using ultrasonic vibrations.
従来、脳神経外科、整形外科、形成外科、口腔
外科等の領域における生物組織、特に硬組織の切
断には線鋸、電動または空圧駆動鋸(ボーンソ
ー)、サージカルバーなどが使用されているが、
線鋸は切断開始までに孔あけ等の準備作業が必要
で、作業効率が悪く長時間の作業を要するという
欠点があつた。また、刃が直線運動をしているボ
ーンソーは、硬組織内の硬膜、血管、神経組織等
に単に触れただけで傷をつけてしまい、作業中の
手術者に多大の負担をかけ、また、現在要求され
ている硬組織に細かい部分、特に一辺が5〜30mm
程度の窓をあけ、かつ切断片によつて処置後に蓋
をするというような作業は難しく、切断歯と生物
組織との間に生ずる摩擦熱により、切断部及び周
辺組織の活性を失わせるという欠点があつた。次
にサージカルバーの場合、ドリルを回転させて切
断を行うため、手術者の手元にビビリ振動や回転
方向に引つぱられる力が発生するという欠点があ
り、また、ボーンソーと同様に硬組織内の血管や
神経等に触れただけで巻きこんで傷つけてしま
い、さらにドリルと生物組織との間に生ずる摩擦
熱により、切断部及び周辺組織の活性を失わせる
という欠点があつた。
Traditionally, wire saws, electric or pneumatic saws (bonesaws), surgical burrs, etc. have been used to cut biological tissues, especially hard tissues, in fields such as neurosurgery, orthopedics, plastic surgery, and oral surgery.
Wire saws require preparatory work such as drilling holes before starting cutting, which has the disadvantage of being inefficient and requiring long hours of work. In addition, bone saws, whose blades move in a straight line, can injure the dura mater, blood vessels, nerve tissue, etc. in the hard tissue by simply touching them, placing a great burden on the surgeon while working. , currently required hard tissue with fine details, especially 5 to 30 mm on one side.
The disadvantage is that it is difficult to open a window of about 100 degrees and then cover it with a cut piece after the procedure, and the frictional heat generated between the cut tooth and the biological tissue can deactivate the cut part and surrounding tissue. It was hot. Next, in the case of surgical burs, cutting is performed by rotating the drill, which has the disadvantage of generating chatter vibrations and pulling force in the rotational direction at the operator's hand. It has the disadvantage that it can cause damage to blood vessels or nerves by simply touching them, and the frictional heat generated between the drill and the biological tissue causes the cut part and surrounding tissue to lose their activity.
また、超音波を利用した外科手術用具も開発さ
れており、超音波振動源に接続された超音波振動
伝達具の超音波振動によつて、接触した硬質の生
物組織を破砕し、吸引除去する為の外科手術用具
(例えば、特公昭47−39197号公報)や、硬質及び
軟質の生物組織の切断分離用として開発された、
切断歯を持つた金属板製の作業部を有する外科手
術用具(例えば、特公昭51−46990号公報)など
が知られている。しかし、振動方向に対して垂直
な平面の作業部を有した振動体が、硬質の生物組
織の表面層を超音波振動によつて破砕、乳化し、
吸引除去する外科手術用具にとつて、作業部を生
物組織に深くくい込ませて組織を切断分離するの
は、作業部側面の接触抵抗が大きくなるため難し
く、更に、硬い生物組織を切断するのには不適当
であつた。また、超音波振動する切断歯によつて
生物組織を切断分離する外科手術用具は、切断効
率を向上させるために作業部の形状を工夫してい
るが、切断に必要とされる最低の30〜50μm程度
の作業部の振幅によつても、作業部と切断される
生物組織との間に摩擦熱が発生し、作業部が例え
ば、熱伝導性能に優れたチタン合金の場合でも数
百度の表面温度に達し、切断されている組織は切
断面にて炭化されるという欠点がある。更に、刃
形状等の肉厚の薄い0.5〜1mm程度の作業部は摩
擦熱によつて劣化し、破断する恐れがあり、ま
た、作業部が薄いため組織にくい込み、接触抵抗
が大きくなつて刃形状部に圧力が加わり、超音波
振動が停止してしまうという欠点があつた。 Surgical tools that use ultrasound have also been developed, which use the ultrasonic vibrations of an ultrasonic vibration transmission device connected to an ultrasonic vibration source to crush hard biological tissues that come in contact with them and remove them by suction. It was developed as a surgical tool (for example, Japanese Patent Publication No. 47-39197) and for cutting and separating hard and soft biological tissues.
A surgical tool having a working part made of a metal plate with cutting teeth (for example, Japanese Patent Publication No. 51-46990) is known. However, a vibrating body with a plane working part perpendicular to the vibration direction crushes and emulsifies the surface layer of hard biological tissue by ultrasonic vibration.
For surgical instruments that perform suction removal, it is difficult to deeply insert the working part into biological tissue to cut and separate the tissue because the contact resistance on the side of the working part increases, and furthermore, it is difficult to cut hard biological tissue. was inappropriate. In addition, surgical instruments that cut and separate biological tissue using ultrasonic vibrating cutting teeth have devised the shape of the working part to improve cutting efficiency, but the minimum Even if the amplitude of the working part is about 50 μm, frictional heat is generated between the working part and the biological tissue being cut, and even if the working part is made of titanium alloy, which has excellent heat conductivity, the surface temperature of several hundred degrees The disadvantage is that the tissue being cut becomes carbonized at the cut surface when the temperature is reached. Furthermore, the working part of the blade, which has a thin wall thickness of about 0.5 to 1 mm, deteriorates due to frictional heat and may break.Also, because the working part is thin, it may embed itself in the tissue, increasing contact resistance and causing the blade to break. The drawback was that pressure was applied to the shaped part, causing the ultrasonic vibration to stop.
本考案は、従来の外科手術用具のこのような問
題点を解決するため、超音波振動による切断効率
及び操作性能を向上させ、切断時に発生する摩擦
熱によつて作業部に接触した生物組織が頽壊する
のを防止すると共に、連続作業時の発熱による作
業部の機械的強度の低下を防止し、切断時の操作
部への接触抵抗を低減し、生物組織へのくい込み
による超音波振動の停止を防止し得るような生物
組織を切断するための外科手術用具を提供するこ
とを目的としたものである。
In order to solve these problems with conventional surgical instruments, the present invention uses ultrasonic vibration to improve cutting efficiency and operational performance, and the frictional heat generated during cutting reduces biological tissue that comes into contact with the working part. In addition to preventing damage, it also prevents the mechanical strength of the working part from decreasing due to heat generated during continuous operation, reduces contact resistance to the operating part during cutting, and reduces ultrasonic vibration caused by penetration into biological tissues. It is an object of the present invention to provide a surgical instrument for cutting biological tissue that can prevent arrest.
即ち本考案は、超音波振動により生物組織を切
断分離するための外科手術用具であつて、超音波
振動源に接続され超音波周波数の機械的振動を生
じる超音波振動伝達具が、生物組織と接触する作
業部、および術部にイリゲーシヨン液を導くため
の通路を有し、該作業部は斜切面の先端にへら形
状の刃部を有し、該刃部には1個または複数個の
溝、窪み、もしくは刃部の先端までスリツトを設
けた窓を有すると共に前記通路の片側は作業部斜
切面の中央部に開口していることを特徴とする外
科手術用具である。
That is, the present invention is a surgical tool for cutting and separating biological tissues using ultrasonic vibrations, in which an ultrasonic vibration transmitter that is connected to an ultrasonic vibration source and generates mechanical vibrations at an ultrasonic frequency is used to cut and separate biological tissues. The working part has a contacting working part and a passage for guiding irrigation liquid to the surgical site, the working part has a spatula-shaped blade part at the tip of the beveled surface, and the blade part has one or more grooves. The surgical tool is characterized in that it has a window with a recess or a slit extending to the tip of the blade, and one side of the passage opens at the center of the beveled surface of the working part.
以下、図面を参照して、考案を詳細に説明す
る。 The invention will be described in detail below with reference to the drawings.
第1図は、本考案の一実施例となる外科手術用
具を使用する装置の構成を示す図である。超音波
発進回路1よりケーブル2,3を通つて超音波振
動源7に超音波周波数の電気信号が送られ、超音
波振動源7は超音波周波数の機械的振動を発生さ
せる。超音波振動源7としては磁歪型及び電歪型
のいずれも使用でき、超音波振動源7で発生した
超音波周波数の機械的振動は超音波振動伝達具8
に伝播され、そして、更に超音波振動伝達具8の
接合部10で拡大されて作業部9に伝播される。
作業部9は生物組織と直接接触し、超音波周波数
の機械的振動によつて生物組織を切断する。 FIG. 1 is a diagram showing the configuration of an apparatus using a surgical tool according to an embodiment of the present invention. An electrical signal at an ultrasonic frequency is sent from the ultrasonic starting circuit 1 to an ultrasonic vibration source 7 through cables 2 and 3, and the ultrasonic vibration source 7 generates mechanical vibration at an ultrasonic frequency. As the ultrasonic vibration source 7, either a magnetostrictive type or an electrostrictive type can be used.
The vibration is then further expanded at the joint 10 of the ultrasonic vibration transmitter 8 and transmitted to the working part 9.
The working part 9 is in direct contact with biological tissue and cuts the biological tissue by mechanical vibrations at ultrasonic frequencies.
作業部9が超音波周波数の機械的振動を行つて
いる時、イリゲーシヨン液の注入ポンプ装置4よ
り、イリゲーシヨン液がチユーブ5、パイプ6を
通つて超音波振動伝達具8に送られる。このイリ
ゲーシヨン液の種類は特に限定されるものではな
いが生理食塩水等の生物組織に対する影響の少な
いものが好ましい。パイプ6を通つたイリゲーシ
ヨン液は、第2図に示した様に開口部23より入
り、イリゲーシヨン液通路11を通つて作業部9
の斜切面の中央部に開口している噴出口12より
噴出する。 When the working part 9 is mechanically vibrating at an ultrasonic frequency, the irrigation liquid is sent from the irrigation liquid injection pump device 4 to the ultrasonic vibration transmitting device 8 through the tube 5 and the pipe 6. The type of irrigation liquid is not particularly limited, but it is preferable to use one that has little effect on biological tissue, such as physiological saline. The irrigation liquid that has passed through the pipe 6 enters through the opening 23 as shown in FIG.
It is ejected from the ejection port 12 which is open at the center of the slanted surface of the.
また、イリゲーシヨン液通路11の直径と噴出
口12の直径は特に限定はされないが、イリゲー
シヨン液通路11の直径より噴出口12の直径の
方が小さいことが、イリゲーシヨン液の噴出効果
に優れ好ましい。このイリゲーシヨン液によつて
作業部9及び周辺の生物組織が冷却され、超音波
周波数の機械的振動による切断に伴う摩擦熱によ
つて作業部9の温度が上昇するのを防ぐことがで
きる。また、連続使用時における超音波振動伝達
具8の発熱を、通路11にイリゲーシヨン液が通
過することにより抑え、超音波振動伝達具8の機
械的強度の劣化を防ぐことができる。なお、超音
波振動伝達具8の材質は特に限定はされないが、
引つ張り強度や疲労強度の大きいチタン合金が好
ましい。 Further, the diameter of the irrigation liquid passage 11 and the diameter of the jet nozzle 12 are not particularly limited, but it is preferable that the diameter of the jet nozzle 12 is smaller than the diameter of the irrigation liquid passage 11 because of excellent squirting effect of the irrigation liquid. The irrigation liquid cools the working part 9 and the surrounding biological tissues, and can prevent the temperature of the working part 9 from rising due to frictional heat caused by cutting by mechanical vibrations at ultrasonic frequencies. Moreover, the generation of heat in the ultrasonic vibration transmitting tool 8 during continuous use can be suppressed by passing the irrigation liquid through the passage 11, and deterioration of the mechanical strength of the ultrasonic vibration transmitting tool 8 can be prevented. Note that the material of the ultrasonic vibration transmitter 8 is not particularly limited;
Titanium alloys with high tensile strength and fatigue strength are preferred.
第3図〜第5図は作業部9の具体的実施例を示
したものであり、第3図は、作業部9先端のへら
形状の刃部16に先端までスリツト17を設けた
複数個の窓13を設け、刃部16を複数個の枝刃
に分割したものである。これによつて、切断時に
刃部16が生物組織に深くくい込んだとき、窓1
3の部位で体積が減る結果、接触抵抗が減少し、
切断速度の低下を防ぐことができる。更に摩擦熱
の低減にもなり、窓13を伝わつて噴出口12よ
り噴出するイリゲーシヨン液が切断部分に供給さ
れ冷却する。第4図および第5図は、夫々溝1
4、窪み15を設けたもので、第3図の実施例と
同様に接触抵抗が減り、切断速度の低下を防ぎ摩
擦熱の低減になる。窓13および溝14の幅は特
に限定はされないが、0.2〜1.5mm程度が好まし
く、エツジ部はR形状とした方が良い。また、溝
14および窪み15の深さは特に限定はされない
が、0.05〜0.5mmが好ましい。 3 to 5 show specific embodiments of the working part 9, and FIG. 3 shows a plurality of slits 17 provided in the spatula-shaped blade part 16 at the tip of the working part 9. A window 13 is provided and the blade portion 16 is divided into a plurality of branch blades. As a result, when the blade part 16 penetrates deeply into biological tissue during cutting, the window 1
As a result of the volume reduction in part 3, the contact resistance decreases,
It is possible to prevent a decrease in cutting speed. Furthermore, frictional heat is reduced, and the irrigation liquid transmitted through the window 13 and ejected from the spout 12 is supplied to the cut portion and cooled. FIGS. 4 and 5 show groove 1, respectively.
4. Since the recess 15 is provided, the contact resistance is reduced as in the embodiment shown in FIG. 3, thereby preventing a decrease in cutting speed and reducing frictional heat. The widths of the window 13 and the groove 14 are not particularly limited, but are preferably about 0.2 to 1.5 mm, and the edges are preferably rounded. Furthermore, the depths of the grooves 14 and the depressions 15 are not particularly limited, but are preferably 0.05 to 0.5 mm.
更に、刃部16の生物組織に対する進入方向は
超音波周波数の機械的振動方向とは角度を有して
いても良く、特に限定はされない。第6図のa
は、作業部9先端のスリツト17により枝刃に分
割された刃部16が作業部の円周方向に湾曲した
実施例であり、bは作業部9の軸方向に湾曲した
実施例である。この形状によつて、刃部16の振
動が軸方向の振動と湾曲した方向の振動の組合わ
せによる複合振動を発生させ、切断効率を向上さ
せる。軸方向の湾曲角度は特に限定はされない
が、5°〜30°で、湾曲の方向は隣合わせ相反する
向きに曲げた方が好ましい。更に、軸方向に平行
にねじれを加えてもよい。 Furthermore, the direction in which the blade portion 16 enters the biological tissue may be at an angle with the direction of mechanical vibration of the ultrasonic frequency, and is not particularly limited. Figure 6a
1 is an embodiment in which the blade section 16 divided into branch blades by a slit 17 at the tip of the working section 9 is curved in the circumferential direction of the working section, and b is an embodiment in which it is curved in the axial direction of the working section 9. Due to this shape, the vibration of the blade portion 16 generates a compound vibration due to a combination of vibration in the axial direction and vibration in the curved direction, thereby improving cutting efficiency. The bending angle in the axial direction is not particularly limited, but it is preferably 5° to 30°, and the bending directions are preferably opposite to each other. Furthermore, twisting may be applied parallel to the axial direction.
また、術式によつて狭い部分もしくは湾曲した
部分の切断をする場合に適した形状の具体例とし
て、超音波振動伝達具8が接合部10の手前およ
び/または作業部9の手前で屈曲しており、超音
波振動源の機械的振動方向に対して、作業部9の
軸線が角度を持つている超音波振動伝達具を第7
図に示している。その角度は0〜90°好ましくは
0〜60°とするのが良い。更に第8図に示したよ
うに作業部9をネジ18,19によつて接合する
超音波振動伝達具8は、作業部9の用途に応じた
交換が可能となり好適である。また、作業部9の
材質は、チタン合金、セラミツクス、特に、ジル
コニア、窒化ケイ素及び複合材が好ましい。 Further, as a specific example of a shape suitable for cutting a narrow part or a curved part depending on the surgical technique, the ultrasonic vibration transmitting tool 8 may be bent before the joint part 10 and/or before the working part 9. A seventh ultrasonic vibration transmitter is used, and the axis of the working part 9 is at an angle with respect to the mechanical vibration direction of the ultrasonic vibration source.
As shown in the figure. The angle is preferably 0 to 90 degrees, preferably 0 to 60 degrees. Further, as shown in FIG. 8, the ultrasonic vibration transmitter 8 in which the working part 9 is joined by screws 18 and 19 is preferable because it allows the working part 9 to be replaced according to the intended use. Further, the material of the working part 9 is preferably titanium alloy, ceramics, particularly zirconia, silicon nitride, and composite materials.
次に、第9図により本考案の外科手術用具を用
いた実施例について説明する。aは生物組織20
の表面に作業部9の刃先が入り込んでいる状態で
あり、bは作業部9の刃部16が深く喰い込んで
切断している状態を示している。このとき、窓1
3が設けられていることによつて刃部16と生物
組織20の切断面との接触部分が小さくなつてお
り、また、窓13を伝わつてイリケーシヨン液が
流れ、作業部9及び生物組織20を冷却する。 Next, an embodiment using the surgical tool of the present invention will be described with reference to FIG. a is biological tissue 20
b shows a state in which the cutting edge of the working part 9 has penetrated into the surface, and b shows a state in which the cutting part 16 of the working part 9 has cut deeply into the surface. At this time, window 1
3, the contact area between the blade part 16 and the cut surface of the biological tissue 20 is reduced, and the irrigation liquid flows through the window 13, thereby damaging the working part 9 and the biological tissue 20. Cooling.
本考案に従うと、生物組織、特に硬組織の切断
の作業を、従来の外科用の線鋸等による切断に比
べて迅速に行うことができ、また、超音波周波数
の機械的振動をしている作業部と生物組織を効果
的に冷却することができ、摩擦熱による作業部の
機械的強度の劣化を防止すると共に、切断される
面の活性な生物組織の頽壊を防いで活性を保つこ
とができ、生物組織を切断するための外科手術用
具として好適である。特に、作業部の刃部に窓、
溝、窪み等を設けたことにより、作業部と生物組
織との接触抵抗を最小限にして、切断効率を向上
させ、摩擦熱の発生も低減できる。更にイリゲー
シヨン液噴出による冷却効果のある本考案の外科
手術用具は、従来のドリルを回転させる構造のサ
ージカルバーと比べて、切断時に術者の手に加わ
る軸ぶれ振動が無く、精密な作業ができる。ま
た、従来の超音波振動を利用した切断用の手術用
具と比べて、イリゲーシヨン液による冷却によつ
て切断部位周辺の生物組織の活性を保つことがで
き、術後の切断部の回復状況を良くし、外科手術
用具として好適である。
According to the present invention, biological tissue, especially hard tissue, can be cut more quickly than with conventional surgical wire saws. The working part and biological tissue can be effectively cooled, preventing deterioration of the mechanical strength of the working part due to frictional heat, and preventing the active biological tissue on the surface to be cut from being destroyed and maintaining its activity. It is suitable as a surgical tool for cutting biological tissue. In particular, there is a window in the blade part of the working part.
By providing grooves, depressions, etc., it is possible to minimize the contact resistance between the working part and the biological tissue, improve cutting efficiency, and reduce the generation of frictional heat. Furthermore, the surgical tool of this invention, which has a cooling effect due to the injection of irrigation liquid, does not cause shaft vibrations that are applied to the operator's hands during cutting, and allows for precise work, compared to conventional surgical culverts that have a rotating drill structure. . In addition, compared to conventional surgical tools for cutting that utilize ultrasonic vibration, cooling with irrigation fluid can maintain the activity of biological tissue around the cut site, improving the recovery status of the cut site after surgery. However, it is suitable as a surgical tool.
更に、サージカルバー及びボーンソーの場合
は、硬組織内の血管、神経組織に触れただけで損
傷するが本考案の外科手術用具の場合は50〜
200μm程度の微細な超音波振動により、弾力性
のある血管、神経等の軟部組織に接触しただけで
は損傷はほとんどないという利点がある。 Furthermore, in the case of surgical culvers and bone saws, just touching blood vessels and nerve tissue in hard tissue causes damage, but in the case of the surgical tool of this invention,
Ultrasonic vibrations as small as 200 μm have the advantage of causing almost no damage to elastic soft tissues such as blood vessels and nerves when they come into contact with them.
第1図は本考案による外科手術用具を使用する
装置の構成を示す図である。第2図は本考案の一
実施例を示す図で、aは超音波振動伝達具の構造
を示す概略図、bは作業部を示す概略図である。
第3図乃至第5図は具体的な実施例となる作業部
の形状を示す図で、それぞれaは上面図、bはa
のA−A′断面図である。第6図は他の実施例と
なる作業部の形状を示す図で、第7図は接合部の
手前で屈曲した超音波振動伝達具、第7図bは作
業部の手前で屈曲した例、第8図は着脱型の作業
部を示す図である。また、第9図は本考案による
外科手術用具の使用例を示す図である。
FIG. 1 is a diagram showing the configuration of an apparatus using a surgical tool according to the present invention. FIG. 2 is a diagram showing an embodiment of the present invention, in which a is a schematic diagram showing the structure of an ultrasonic vibration transmitting tool, and b is a schematic diagram showing a working part.
Figures 3 to 5 are diagrams showing the shape of the working part as a specific example, where a is a top view and b is a top view.
FIG. Fig. 6 is a diagram showing the shape of the working part of another embodiment, Fig. 7 is an ultrasonic vibration transmitter bent before the joint, Fig. 7b is an example of the ultrasonic vibration transmitter bent before the working part, FIG. 8 is a diagram showing a detachable working part. Moreover, FIG. 9 is a diagram showing an example of use of the surgical tool according to the present invention.
Claims (1)
めの外科手術用具であつて、超音波振動源に接
続され超音波周波数の機械的振動を生じる超音
波振動伝達具が、生物組織と接触する作業部、
及び術部にイリゲーシヨン液を導くための通路
を有し、該作業部は斜切面の先端にへら形状の
刃部を有し、該刃部には1個または複数個の
溝、窪み、もしくは刃部の先端までスリツトを
設けた窓を有すると共に、前記通路の片側は作
業部斜切面の中央部に開口していることを特徴
とする外科手術用具。 (2) 請求項(1)に記載された、作業部が刃部に窓を
有する外科手術用具において、スリツトにより
複数個の枝刃に分割された刃部が、該作業部の
円周方向もしく軸方向に湾曲していることを特
徴とする外科手術用具。 (3) 超音波振動伝達具が、接合部の手前及び/ま
たは作業部の手前で屈曲しており、超音波振動
源の機械的振動方向に対して、前記作業部の軸
線が角度を持つていることを特徴とする、請求
項(1)もしくは請求項(2)に記載の外科手術用具。[Claims for Utility Model Registration] (1) A surgical tool for cutting and separating biological tissue using ultrasonic vibrations, which is connected to an ultrasonic vibration source and transmits ultrasonic vibrations that generates mechanical vibrations at ultrasonic frequencies. a working part where the tool comes into contact with biological tissue;
and a passage for guiding irrigation fluid to the surgical site, the working part having a spatula-shaped blade at the tip of the beveled surface, and the blade having one or more grooves, depressions, or blades. 1. A surgical tool, characterized in that the window has a slit extending to the tip of the working part, and one side of the passage opens at the center of the beveled surface of the working part. (2) In the surgical tool according to claim (1), in which the working part has a window in the blade part, the blade part divided into a plurality of branch blades by the slit also extends in the circumferential direction of the working part. A surgical instrument characterized by being uniquely curved in the axial direction. (3) The ultrasonic vibration transmitter is bent in front of the joint and/or in front of the working part, and the axis of the working part is at an angle with respect to the mechanical vibration direction of the ultrasonic vibration source. The surgical tool according to claim (1) or claim (2), characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988158494U JPH0529697Y2 (en) | 1988-12-07 | 1988-12-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988158494U JPH0529697Y2 (en) | 1988-12-07 | 1988-12-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0279913U JPH0279913U (en) | 1990-06-20 |
JPH0529697Y2 true JPH0529697Y2 (en) | 1993-07-29 |
Family
ID=31438875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988158494U Expired - Lifetime JPH0529697Y2 (en) | 1988-12-07 | 1988-12-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0529697Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022500186A (en) * | 2018-09-24 | 2022-01-04 | コンメッド コーポレーション | Cartilage tumor |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100394897C (en) * | 2004-08-03 | 2008-06-18 | 张毓笠 | Compound vibrated ultrasonic bone surgery apparatus |
JP5316889B2 (en) * | 2009-12-18 | 2013-10-16 | 精電舎電子工業株式会社 | Ultrasonic cutter device and tool horn for ultrasonic cutter device |
JP5475088B1 (en) * | 2012-11-02 | 2014-04-16 | 株式会社中京メディカル | Surgical instruments |
US9387005B2 (en) * | 2013-06-28 | 2016-07-12 | Misonix, Incorporated | Ultrasonic cutting blade with cooling liquid conduction |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4921989A (en) * | 1972-04-22 | 1974-02-26 | R Pohlman | |
JPS6122581B2 (en) * | 1979-10-31 | 1986-06-02 | Osaka Kiko Co Ltd | |
JPS61191350A (en) * | 1985-02-21 | 1986-08-26 | 住友ベークライト株式会社 | Surgical operation tool |
JPS62268549A (en) * | 1986-05-15 | 1987-11-21 | 住友ベークライト株式会社 | Handpiece |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6122581U (en) * | 1984-07-17 | 1986-02-10 | アロカ株式会社 | ultrasonic oscillator |
-
1988
- 1988-12-07 JP JP1988158494U patent/JPH0529697Y2/ja not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4921989A (en) * | 1972-04-22 | 1974-02-26 | R Pohlman | |
JPS6122581B2 (en) * | 1979-10-31 | 1986-06-02 | Osaka Kiko Co Ltd | |
JPS61191350A (en) * | 1985-02-21 | 1986-08-26 | 住友ベークライト株式会社 | Surgical operation tool |
JPS62268549A (en) * | 1986-05-15 | 1987-11-21 | 住友ベークライト株式会社 | Handpiece |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022500186A (en) * | 2018-09-24 | 2022-01-04 | コンメッド コーポレーション | Cartilage tumor |
Also Published As
Publication number | Publication date |
---|---|
JPH0279913U (en) | 1990-06-20 |
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