JPH0529696Y2 - - Google Patents
Info
- Publication number
- JPH0529696Y2 JPH0529696Y2 JP1988153542U JP15354288U JPH0529696Y2 JP H0529696 Y2 JPH0529696 Y2 JP H0529696Y2 JP 1988153542 U JP1988153542 U JP 1988153542U JP 15354288 U JP15354288 U JP 15354288U JP H0529696 Y2 JPH0529696 Y2 JP H0529696Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- ultrasonic vibration
- shape
- working head
- surgical tool
- 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
- 238000005520 cutting process Methods 0.000 claims description 40
- 230000002262 irrigation Effects 0.000 claims description 15
- 238000003973 irrigation Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 210000001519 tissue Anatomy 0.000 description 36
- 239000007788 liquid Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002316 cosmetic surgery Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 230000010355 oscillation Effects 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
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 210000004373 mandible Anatomy 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 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
- 210000003625 skull Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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、
切削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] This invention is a method for cutting biological tissue using ultrasonic vibrations.
The present invention relates to a surgical tool for cutting.
従来、脳神経外科、整形外科、形成外科、口腔
外科等における生物組織、特に硬組織の切削、形
成には、Kerrison鉗子、歯槽骨鉗子、メス、ガ
ウジユ（円のみ）、やすり、サージカルバー等が
用いられているが、Kerrison鉗子等の鉗子及び
メス等の手術器械は、切削作業の効率が悪く、長
時間の作業を要し、手術者に多大の労力がかか
り、かつ細かい切削形成作業には高度な技術を必
要とするという欠点があつた。また、空圧駆動に
よるサージカルバーは、回転運転によつて切削す
るため、作業中にバーと硬組織その接触部からの
ビビリ振動が手術者の手元に伝わり、細かな作業
が難しいという欠点があり、又、回転切削による
摩擦熱で生物組織の活性が失われるという欠点が
あつた。
Traditionally, Kerrison forceps, alveolar bone forceps, scalpels, gouges (circular only), files, surgical culvers, etc. have been used to cut and shape biological tissue, especially hard tissue, in neurosurgery, orthopedics, plastic surgery, oral surgery, etc. However, surgical instruments such as forceps such as Kerrison forceps and scalpels are inefficient in cutting operations, require long hours of operation, require a great deal of labor on the part of the surgeon, and are not highly sophisticated for detailed cutting and shaping operations. The disadvantage was that it required advanced technology. In addition, since pneumatically driven surgical burs cut by rotation, vibrations from the contact area between the bur and the hard tissue are transmitted to the surgeon's hands during operation, making it difficult to perform detailed work. Another drawback was that the biological tissue lost its activity due to the frictional heat generated by the rotary cutting.
切削作業においては、従来は外科用のこぎり、
電動、空圧駆動のこぎり、サージカルバー等が使
用されているが、外科用のこぎりは作業効率が悪
く、長時間の作業を要するという欠点がある。ま
た、現在、脳神経外科、形成外科、整形外科、口
腔外科等の領域においては、硬組織になるべく小
さな窓をあけ、内部の腫瘍を除去する手術が数多
く行われていて、細かい切断作業が要求されるた
め、刃が直線運動している電動のこぎり（ボーン
ソー）は、曲線や孔の切断には適さない。更に、
サージカルバーは、回転運動のため、硬組織内の
血管や神経組織に触れただけで損傷を与えるとい
う欠点があり、これらのボーンソーやサージカル
バーは、切断面に摩擦熱を生じ、近傍もしくは切
断面の組織の活性を失わせてしまう欠点がある。 Traditionally, surgical saws,
Electric and pneumatically driven saws, surgical bars, and the like are used, but surgical saws have the drawback of being inefficient and requiring long hours of work. Furthermore, in the fields of neurosurgery, plastic surgery, orthopedics, oral surgery, etc., many surgeries are currently being performed to open as small a window as possible in hard tissue and remove internal tumors, which require detailed cutting work. Because of this, electric saws (bonesaws) with linear blades are not suitable for cutting curves or holes. Furthermore,
Due to their rotational motion, surgical burs have the disadvantage that they can damage blood vessels and nerve tissue within hard tissues by simply touching them.These bone saws and surgical burs generate frictional heat on the cutting surface, causing damage to nearby or cutting surfaces. The disadvantage is that it causes the tissue to lose its 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）等が知ら
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、軟質の生物組織の表
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、超音波振動が停止してし
まうという欠点があつた。更に、これらの作業部
の形状は刃が直線状であるため、小さな円形状の
切断は難しく使用できない。 Surgical tools utilizing ultrasonic waves have also been developed, including a surgical tool for crushing and aspirating biological tissue that comes into contact with it by ultrasonic vibrations from an ultrasonic vibration transmitter connected to an ultrasonic vibration source (e.g., Japanese Patent Publication No. 47-39197), and a surgical tool having a metal plate working part with cutting teeth, developed for cutting and separating hard and soft biological tissues (e.g., Japanese Patent Publication No. 51-46990).However, for a surgical tool in which a vibrator having a flat working part perpendicular to the vibration direction crushes, emulsifies, and aspirates the surface layer of soft biological tissue by ultrasonic vibrations, it is difficult for the working part to penetrate deep into the biological tissue to cut and separate the tissue, because the contact resistance on the side of the working part becomes large, and furthermore,
It was not suitable for cutting hard biological tissue. In addition, surgical instruments that cut and separate biological tissues with ultrasonically vibrating cutting teeth have been designed with a special shape for the working part to improve cutting efficiency, but even with the minimum amplitude of the working part of about 30 to 50 μm required for cutting, 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 thermal conductivity, the surface temperature reaches several hundred degrees, and the tissue being cut is carbonized at the cut surface. Furthermore, working parts with a thin blade shape, such as about 0.5 to 1 mm, are likely to deteriorate and break due to frictional heat, and the thin working part bites into the tissue, causing the ultrasonic vibration to stop. Furthermore, the shape of these working parts is such that the blade is linear, making it difficult to cut small circular shapes and therefore cannot be used.
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、切
削効率及び操作精度を向上させ、切断、切削時に
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得
るような生物組織を切断、切削するための外科手
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 tools, this invention uses ultrasonic vibration to cut, improve cutting efficiency and operational precision, and cut into contact with the working part by the frictional heat generated during cutting. It is an object of the present invention to provide a surgical tool for cutting and cutting biological tissue that can prevent the biological tissue from being destroyed and also prevent the mechanical strength of the working part from decreasing due to heat generated during continuous operation. This is the purpose.
即ち本考案は、超音波振動により生物組織を切
断、切削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
作業頭部、及び術部にイリゲーシヨン液を導くた
めの通路を有し、該作業頭部は、先端端面の形状
が円形、馬蹄形、もしくはＶ字形で、その外形が
椀形状、ラツパ形状、錐形状、もしくは筒形状を
なすと共に、先端端面の内側が凹面形状をなし、
その周縁部には波形の刃を有する頭部部材を前記
超音波振動伝達具の先端に付設してなりに、前記
通路の片側は作業頭部の内側中心部及び外側面に
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 or cutting biological tissue by ultrasonic vibration, and the ultrasonic vibration transmitter is connected to an ultrasonic vibration source and generates mechanical vibration at an ultrasonic frequency. The working head has a working head that comes into contact with the surgical head, and a passage for guiding the irrigation liquid to the surgical site, and the working head has a distal end face that is circular, horseshoe-shaped, or V-shaped, and whose outer shape is bowl-shaped or lappa-shaped. , has a conical shape or a cylindrical shape, and the inside of the tip end surface has a concave shape,
A head member having a wave-shaped blade is attached to the tip of the ultrasonic vibration transmitter on its peripheral edge, and one side of the passage is open to the inner center and outer surface of the working head. It is a surgical tool featuring:
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
発振回路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で拡大されて作業頭部９に伝播され
る。作業頭部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、切
削する。 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 oscillation 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 work head 9. The working head 9 comes into direct contact with the biological tissue and cuts or cuts the biological tissue by means of mechanical vibrations at ultrasonic frequencies.
作業頭部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を通つて作業頭
部９の内側中心部に開口している噴出口１２及び
作業頭部９の外側面に開口している噴出口１３よ
り噴出する。また、イリゲーシヨン液通路１１の
直径と噴出口１２，１３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
出出口１２，１３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頭部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頭部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、引張り強度や疲労
強度の大きいチタン合金が好ましい。 When the working head 9 is performing mechanical vibration of ultrasonic frequency, the injection pump device 4 of the irrigation liquid
Therefore, the irrigation fluid is in tube 5 and pipe 6.
It is sent to the ultrasonic vibration transmitter 8 through the. 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. The water is ejected from the ejection port 13 which is open on the outer surface of the air filter 9. Further, although the diameter of the irrigation liquid passage 11 and the diameter of the ejection ports 12 and 13 are not particularly limited, the diameter of the ejection ports 12 and 13 is smaller than the diameter of the irrigation liquid passage 11, which improves the ejection effect of the irrigation liquid. Excellent and desirable. This irrigation liquid cools the working head 9 and the surrounding biological tissue, and prevents the temperature of the working head 9 from rising due to frictional heat that accompanies cutting due to 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. The material of the ultrasonic vibration transmitter 8 is not particularly limited, but a titanium alloy with high tensile strength and fatigue strength is preferable.
第２図に示した超音波振動伝達具８は切断用の
作業頭部９の一実施例を示したもので、作業頭部
９の外形は椀形状をなし、その内側には凹面形状
部１５を有し、かつ凹面形状部１５の先端の周縁
部には波形の刃１６を有している。波形の刃の
数、及び波形の深さについては特に限定はされな
いが、波形の刃１６のピツチは１〜５mmで波形の
深さは１〜３mm程度するのが好ましく、更に刃の
向きについては超音波振動の方向と同じかもしく
は角度を有していてもかまわない。 The ultrasonic vibration transmitting tool 8 shown in FIG. 2 is an embodiment of a working head 9 for cutting. , and a wavy blade 16 is provided at the peripheral edge of the tip of the concave portion 15 . There are no particular limitations on the number of waveform blades and the depth of the waveform, but it is preferable that the pitch of the waveform blades 16 is 1 to 5 mm and the depth of the waveform is approximately 1 to 3 mm. The direction may be the same as the direction of the ultrasonic vibration or may be at an angle.
第３図は切削用の作業頭部９を有する超音波振
動伝達具８の一実施例であり作業頭部９の先端は
周縁部に対して水平（ｂ図）もしくはわずかに凸
面形状（ｄ図）をなし、その周縁部に波形の刃を
有すると共に、端面部には複数個の突起１７を有
し、第２図の例と同様に、噴出口１２，１３より
のイリゲーシヨン液の噴出により、作業頭部９に
発生する摩擦熱による切削部分の生物組織及び突
起１７の温度上昇を防ぐことができる。突起１７
を形成する方法は特に限定はされないが、複数の
縦横の溝を設けるか、又は化学的処理により金属
表面を荒らす方法が好ましい。溝の深さ、あるい
は突起の高さは100μｍ〜１mmが好ましい。 Fig. 3 shows an embodiment of the ultrasonic vibration transmitting tool 8 having a working head 9 for cutting, and the tip of the working head 9 is horizontal to the peripheral edge (Fig. ), has a wave-shaped blade on its peripheral edge, and has a plurality of protrusions 17 on its end surface, and as in the example shown in FIG. It is possible to prevent the biological tissue and projections 17 in the cut portion from increasing in temperature due to frictional heat generated in the working head 9. Protrusion 17
The method of forming the metal surface is not particularly limited, but it is preferable to provide a plurality of vertical and horizontal grooves or to roughen the metal surface by chemical treatment. The depth of the groove or the height of the protrusion is preferably 100 μm to 1 mm.
作業頭部９の外形形状は特に限定されるもので
はなく、第２図、第３図のような椀形状の他、第
４図ａに示したように外形線がエクスポネンシヤ
ル曲線やカラノイダル曲線を示すラツパ形状、第
４図ｂのようにテーパー状の直線になつた円錐形
状、第４図ｃのようにステツプをを持つた円筒形
状等が好適に使用できる。更に、第５図に示すよ
うに作業頭部９の先端端面形状は、必ずしも円形
でなくてもよく、楕円形、馬蹄形、Ｖ字形等も術
部に応じて使用可能であり、その場合、外形も椀
形状、ラツパ形状、錐形状、筒形状等をとり得る
ことは勿論である。 The external shape of the working head 9 is not particularly limited, and in addition to the bowl shape as shown in FIGS. 2 and 3, the external shape may be an exponential curve or a calanoidal curve as shown in FIG. 4a. A trumpet shape as shown in FIG. 4B, a conical shape with a tapered straight line as shown in FIG. 4B, and a cylindrical shape with a step as shown in FIG. 4C can be suitably used. Furthermore, as shown in FIG. 5, the shape of the tip end surface of the working head 9 does not necessarily have to be circular, and oval, horseshoe, V-shape, etc. can also be used depending on the surgical area. Needless to say, the shape may be a bowl shape, a laper shape, a conical shape, a cylindrical shape, etc.
また、術式によつて狭い部分もしくは湾曲した
部分の切断または切削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
の手前及び／または作業頭部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、
作業頭部９の軸線が角度を持つている超音波振動
伝達具を第６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
７図に示したように作業頭部９部材をネジ部１
８，１９によつて接合する超音波振動伝達具８
は、作業頭部９の用途に応じた交換が可能となり
好適である。また、作業頭部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 or cutting a narrow part or a curved part depending on the surgical procedure, the ultrasonic vibration transmitting tool 8 is connected to the joint part 10.
and/or in front of the working head 9, with respect to the mechanical vibration direction of the ultrasonic vibration source.
FIG. 6 shows an ultrasonic vibration transmitter in which the axis of the working head 9 has an angle. The angle is 0~
The angle is preferably 90°, preferably 0 to 60°. Furthermore, as shown in FIG.
Ultrasonic vibration transmitter 8 joined by 8, 19
is preferable because it allows the work head 9 to be replaced depending on the intended use. Further, the material of the working head 9 is preferably titanium alloy, ceramics, particularly zirconia, silicon nitride, and composite materials.
次に、第８図、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。第８図ａ
は生物組織２０の表面に矢印２１の方向に振動し
ている作業頭部９が接触した状態を示しており、
その周辺には噴出口１３よりイリゲーシヨン液が
噴出して冷却している。なお、この図では示して
いないが、作業頭部９の凹面形状部１５の噴出口
１２からもイリゲーシヨン液が噴出している。第
８図ｂ，ｃは切断の経過を示しているが、作業頭
部９の側面と生物組織２０の切断面との接触は最
小限にとどまり、これは、超音波振動伝達具８及
び超音波発振回路１に対する負荷の低減となり、
更に、摩擦熱の発生を最小限にとどめている。第
９図はこのような切断を行う場合の具体例の一つ
で、下顎骨２１内の腫瘍摘出の際に使用し、切断
孔２２を生じた例である。 Next, an embodiment using the surgical tool of the present invention will be described with reference to FIGS. 8 and 9. Figure 8a
shows a state in which the working head 9 vibrating in the direction of the arrow 21 is in contact with the surface of the biological tissue 20,
Irrigation liquid is spouted from the spout 13 around the area to cool it. Although not shown in this figure, the irrigation liquid is also ejected from the ejection port 12 of the concave portion 15 of the working head 9. 8b and 8c show the progress of cutting, and the contact between the side surface of the working head 9 and the cut surface of the biological tissue 20 is minimal, which is due to the ultrasonic vibration transmitter 8 and the ultrasonic The load on the oscillation circuit 1 is reduced,
Furthermore, the generation of frictional heat is kept to a minimum. FIG. 9 is a specific example of such cutting, in which the cut hole 22 is created when the cut hole 22 is removed when a tumor is removed from the mandible.
本考案に従うと、生物組織、特に硬組織の切
断、切削の作業を従来の外科用メス等による切
断、切削に比べて技術の熟練を必要とせず、かつ
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頭部と生物組織を効果的
に冷却することができ、摩擦熱による作業頭部の
機械的強度の劣化を防止すると共に、切断、切削
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、切削するため
の外科手術用具として好適である。
According to the present invention, cutting and cutting of biological tissues, especially hard tissues, can be performed quickly and without requiring technical skill compared to cutting and cutting with conventional surgical scalpels, etc. It is possible to effectively cool the working head and biological tissues that are subject to mechanical vibrations at the sonic frequency, preventing deterioration of the mechanical strength of the working head due to frictional heat, and cooling the surface to be cut and cut. It can prevent the decay of active biological tissue and maintain its activity, and is suitable as a surgical tool for cutting and cutting biological tissue.
特に作業頭部の外形を椀形状、ラツパ形状、円
錐形状等とし、生物組織との接触部分を減らし、
また波形の刃形状によつて切断する生物組織への
超音波振動の伝達効率を向上させ、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
具では難しかつた曲線形状の孔の切断も可能であ
る。 In particular, the outer shape of the working head is made into a bowl shape, a lattice shape, a conical shape, etc. to reduce the contact area with biological tissue.
In addition, the surgical tool of the present invention improves the transmission efficiency of ultrasonic vibrations to the biological tissue being cut by the wave-shaped blade shape, and has a cooling effect by squirting irrigation fluid. Compared to burs, there is no shaft vibration that is applied to the surgeon's hands during cutting, allowing for more precise work. It is also possible to cut curved holes, which is difficult to do with conventional cutting surgical tools that utilize ultrasonic vibrations.
更に切削用として、作業頭部に突起を有した本
考案の外科手術用具は、超音波振動を利用して術
者の手元操作で切削ができ、かつ、イリゲーシヨ
ン液を噴出し、切削対象の生物組織及び作業頭部
自体を冷却する構造であり、全く新規なものであ
り、関節の摺り合わせ調整時の精密切削、及び頭
蓋骨の欠損部補強用のプラスチツク製代替品の術
中における切削形成に有効である。 Furthermore, for cutting purposes, the surgical tool of the present invention, which has a protrusion on the working head, uses ultrasonic vibrations to allow cutting to be performed by the operator's hand, and also squirts out irrigation fluid to remove the living beings to be cut. It has a completely new structure that cools the tissue and the working head itself, and is effective for precision cutting during joint adjustment and for intraoperative cutting of plastic substitutes for reinforcing defects in the skull. be.
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図及び第３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，ｄは作業頭部を示
す概略図で、ｃは作業頭部の断面図である。第４
図及び第５図は他の実施例となる作業頭部の形状
を示す図、第６図ａは接合部の手前で屈曲した超
音波振動伝達具、第６図ｂは作業頭部の手前で屈
曲した例で、第７図は着脱型の作業頭部を示す図
である。第８図及び第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. Figures 2 and 3 are diagrams showing one embodiment of the present invention, in which a is a schematic diagram showing the structure of the ultrasonic vibration transmitter, b and d are schematic diagrams showing the working head, and c is a schematic diagram showing the working head. FIG. Fourth
Figure 5 and Figure 5 are diagrams showing the shape of the working head as another example, Figure 6 a shows the ultrasonic vibration transmitter bent in front of the joint, and Figure 6 b shows the shape of the working head in front of the working head. In a bent example, FIG. 7 shows a removable working head. FIGS. 8 and 9 are diagrams showing examples of the use of the surgical tool according to the present invention.
Claims (1)
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頭
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、該作業頭部は、先端端面の形状が
円形、馬蹄形、もしくはＶ字形で、その外形が
椀形状、ラツパ形状、錐形状、もしくは筒形状
をなすと共に、先端端面の内側が凹面形状をな
し、その周縁部には波形の刃を有する頭部部材
を前記超音波振動伝達具の先端に付設してな
り、前記通路の片側は作業頭部の内側中心部及
び外側面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)記載の外科手術用具において、作業
頭部の先端端面が周縁部に対して水平もしくは
凸面形状をなし、その周縁部に波形の刃を有す
ると共に、端面部には複数個の突起を有するこ
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)記載の外科手術用具。[Claims for Utility Model Registration] (1) A surgical tool for cutting or cutting biological tissue by ultrasonic vibration, which is connected to an ultrasonic vibration source and generates mechanical vibration at an ultrasonic frequency. The transmitting tool has a working head that contacts biological tissue and a passage for guiding irrigation fluid to the surgical site, and the working head has a distal end face that is circular, horseshoe-shaped, or V-shaped, and has an external shape. At the tip of the ultrasonic vibration transmitter, a head member is formed into a bowl shape, a lattice shape, a conical shape, or a cylindrical shape, and the inside of the tip end face is concave, and the peripheral edge thereof has a wave-shaped blade. A surgical tool, characterized in that one side of the passageway is open to the inner center and the outer surface of the working head. (2) In the surgical tool according to claim (1), the distal end surface of the working head has a horizontal or convex shape with respect to the peripheral edge, and has a wave-shaped blade on the peripheral edge, and a plurality of blades on the end surface. A surgical tool characterized by having a plurality of protrusions. (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 |
|---|---|---|---|
| JP1988153542U JPH0529696Y2 (en) | 1988-11-28 | 1988-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988153542U JPH0529696Y2 (en) | 1988-11-28 | 1988-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0274014U JPH0274014U (en) | 1990-06-06 |
| JPH0529696Y2 true JPH0529696Y2 (en) | 1993-07-29 |
Family
ID=31429477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988153542U Expired - Lifetime JPH0529696Y2 (en) | 1988-11-28 | 1988-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529696Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018078827A1 (en) * | 2016-10-28 | 2018-05-03 | オリンパス株式会社 | Ultrasonic probe and ultrasonic treatment tool |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10258297A1 (en) * | 2002-12-13 | 2004-06-24 | Hilti Ag | Connector for ultrasound transmission between stone cutter holder and bit has shaped contacts held together by pretensioning screw |
| DE102004020855B4 (en) * | 2004-04-28 | 2009-06-10 | Erbe Elektromedizin Gmbh | Applicator for waterjet surgery |
| US7652411B2 (en) * | 2006-09-18 | 2010-01-26 | Medicis Technologies Corporation | Transducer with shield |
| AU2010278867B2 (en) * | 2009-07-30 | 2015-10-01 | Smith & Nephew, Inc. | Instrument for creating microfractures in a bone |
| US9872697B2 (en) * | 2015-07-13 | 2018-01-23 | Misonix, Incorporated | Ultrasonic wound treatment apparatus and associated method |
| JP6778758B2 (en) * | 2016-10-28 | 2020-11-04 | オリンパス株式会社 | Ultrasonic device |
| EP3817672A1 (en) * | 2018-07-03 | 2021-05-12 | Bosonic AG | Device for perforating a dense bone layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4921989A (en) * | 1972-04-22 | 1974-02-26 | R Pohlman | |
| JPS5091188A (en) * | 1973-12-12 | 1975-07-21 | ||
| JPS62102749A (en) * | 1985-10-31 | 1987-05-13 | オリンパス光学工業株式会社 | Ultrasonic stone crushing probe |
| 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 |
|---|---|---|---|---|
| JPS5968543U (en) * | 1982-10-27 | 1984-05-09 | 福本 猛夫 | Soft bag for storing internal secretions |
-
1988
- 1988-11-28 JP JP1988153542U patent/JPH0529696Y2/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 | |
| JPS5091188A (en) * | 1973-12-12 | 1975-07-21 | ||
| JPS62102749A (en) * | 1985-10-31 | 1987-05-13 | オリンパス光学工業株式会社 | Ultrasonic stone crushing probe |
| JPS62268549A (en) * | 1986-05-15 | 1987-11-21 | 住友ベークライト株式会社 | Handpiece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018078827A1 (en) * | 2016-10-28 | 2018-05-03 | オリンパス株式会社 | Ultrasonic probe and ultrasonic treatment tool |
| JPWO2018078827A1 (en) * | 2016-10-28 | 2019-09-05 | オリンパス株式会社 | Ultrasonic probe and ultrasonic treatment instrument |
| US11134977B2 (en) | 2016-10-28 | 2021-10-05 | Olympus Corporation | Ultrasound probe and ultrasound treatment tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0274014U (en) | 1990-06-06 |
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