JPH10295700A - Surgical operation appliance - Google Patents

Surgical operation appliance

Info

Publication number
JPH10295700A
JPH10295700A JP9109320A JP10932097A JPH10295700A JP H10295700 A JPH10295700 A JP H10295700A JP 9109320 A JP9109320 A JP 9109320A JP 10932097 A JP10932097 A JP 10932097A JP H10295700 A JPH10295700 A JP H10295700A
Authority
JP
Japan
Prior art keywords
ultrasonic vibration
tip
liquid
working
rear end
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.)
Pending
Application number
JP9109320A
Other languages
Japanese (ja)
Inventor
Shigeo Ito
重雄 伊藤
Shinetsu Harada
新悦 原田
Yukimasa Yamaguchi
幸正 山口
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP9109320A priority Critical patent/JPH10295700A/en
Publication of JPH10295700A publication Critical patent/JPH10295700A/en
Pending legal-status Critical Current

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  • Surgical Instruments (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a horn itself from being deteriorated by heating of the horn and safely cut while confirming the position of the cut part by setting the tip part to be a belly of vibration of an operation part into a recessed shape and arranging an insertion part in the adjacent to the rear end side continuing to the recess part. SOLUTION: A vibration transmission appliance 1 is connected to an ultrasonic vibration source of the same resonance frequency by a connecting screw 4 in the rear end part and a high frequency power of the resonance frequency is applied on the ultrasonic vibration source so that the generated ultrasonic vibration is transmitted to an organisms tissue via an operation part 2 in the tip. A liquid passage 5 which is extended in the length direction so as to be communicated with the liquid path in the ultrasonic vibration source is provided in the inside of the ultrasonic vibration transmission appliance 1 and the tip side of the liquid passage 5 is opened in the liquid injection hole 6 in the adjacent to the rear part of the operation part 2. The shape of the operation part, 2 is so formed that a recess part 3 is provided in an insertion part 7 having a fixed cross section and formed into a straight line and the insertion part 7 is arranged in the adjacent to the rear end side continuing to the recess part.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、超音波振動により
生物組織の骨化した組織、硬組織等を切削、分離する外
科手術用具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical tool for cutting and separating ossified or hard tissue of biological tissue by ultrasonic vibration.

【０００２】[0002]

【従来の技術】従来、生物組織、特に硬骨組織及び軟骨
組織の切削には外科用メスが用いられているが、頸椎等
の手術では精密な作業が要求されるために、長時間を有
し、手術者に多大の労力がかかり、且つ切断分離に高度
の技術を必要とすると言う欠点があった。また、超音波
を利用した外科手術用具も多数開発されており、超音波
振動源に接続された作業部を超音波振動させ、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）が知られてい
る。しかし、前述の破砕、吸引除去するための外科手術
用具などは、硬い生物組織を切削するには不適当であっ
たり、また押しながら精密切削が必要な部位に対しては
切削位置が予定部位よりずれてしまい周囲の組織を傷つ
けてしまうという恐れがあった。2. Description of the Related Art Conventionally, a surgical scalpel has been used for cutting biological tissues, particularly, bone and cartilage tissues. However, there are drawbacks in that the operator requires a great deal of labor and requires a high level of technology for cutting and separating. Also, a number of surgical tools using ultrasonic waves have been developed, and a surgical tool for ultrasonically oscillating a working unit connected to an ultrasonic vibration source to crush and remove aspirated biological tissue ( For example, Japanese Patent Publication No. 47-39197 is known. However, the above-mentioned surgical tools for crushing and suction removal are not suitable for cutting hard biological tissue, and the cutting position is smaller than the planned position for parts that require precise cutting while pressing. There was a risk that it would shift and would damage surrounding tissue.

【０００３】[0003]

【発明が解決しようとする課題】本発明は、従来の外科
手術用具のこのような問題点を解決することを目的とし
たもので、ホーンの発熱によるホーン自体が劣化すると
いう問題を解消すると共に切削部の位置を確認しなが
ら、かつ視野を確保し、超音波振動による先端作業部の
位置ずれをおこさず、細かい作業を安全に行うのに適し
た形状の外科手術用具を提供しようとするものである。SUMMARY OF THE INVENTION The object of the present invention is to solve such a problem of the conventional surgical instrument, and to solve the problem that the horn itself is deteriorated due to the heat generated by the horn. The purpose is to provide a surgical tool with a shape suitable for performing fine work safely while confirming the position of the cutting part, securing the field of view, not causing displacement of the tip working part due to ultrasonic vibration It is.

【０００４】[0004]

【課題を解決するための手段】即ち本発明は、超音波振
動により生体組織の骨化した組織もしくは硬組織を切
削、分離する外科手術装置の、先端部は超音波振動の腹
となり生体組織に接する作業部を有し、長さ方向に延び
た液体通路を有する振動伝達具であって、該作業部は、
振動の腹となる先端部が凹形状となし、該凹部に続く後
端側近傍には挿入部を有し、さらに好ましくは該液体通
路の先端側には、該挿入部の後方近傍或いは凹部中央近
傍に開口し、該作業部の先端方向にイリゲーション液を
噴出する液体噴出孔を設けたことを特徴とする外科手術
用具である。That is, the present invention provides a surgical apparatus for cutting and separating ossified or hard tissue of a living tissue by ultrasonic vibration. A vibration transmission tool having a working part in contact with and having a liquid passage extending in a longitudinal direction, wherein the working part is
The tip of the vibration antinode has a concave shape, and has an insertion portion near the rear end following the recess. More preferably, the tip of the liquid passage is near the rear of the insertion portion or the center of the recess. A surgical tool characterized by having a liquid ejection hole which is opened in the vicinity and which ejects an irrigation liquid in the direction of the distal end of the working section.

【０００５】[0005]

【発明の実施の形態】以下、図面を参照して、本発明を
詳細に説明する。図１は本発明の一実施例となる外科手
術用具の全体を示す図で、図２はその先端作業部の形状
を示す図である。振動伝達具（１）は、後端部の接続ネ
ジ（４）により同じ共振周波数の超音波振動源（図示し
ていない）に接続され、超音波振動源に共振周波数の高
周波電力を加えることにより発生させた超音波振動を、
先端の作業部（２）を介して生物組織に伝える。超音波
振動源と振動伝達具（１）の接続は、超音波振動の腹面
で行えば、ネジ接続の他、溶接、圧着等の方法が可能で
あり、特に限定されない。また、振動伝達具自体にネジ
部を設けず、袋ナット等を用いて接続しても良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing the entire surgical instrument according to one embodiment of the present invention, and FIG. 2 is a view showing the shape of a distal working portion. The vibration transmitting tool (1) is connected to an ultrasonic vibration source (not shown) having the same resonance frequency by a connection screw (4) at a rear end, and by applying high-frequency power having a resonance frequency to the ultrasonic vibration source. The generated ultrasonic vibration
It is transmitted to biological tissue through the working section (2) at the tip. If the connection between the ultrasonic vibration source and the vibration transmitting tool (1) is performed on the abdominal surface of the ultrasonic vibration, a method such as welding or crimping can be used other than screw connection, and is not particularly limited. Alternatively, the vibration transmitting tool itself may be connected using a cap nut or the like without providing a screw portion.

【０００６】超音波振動源としては、内部に液体通路を
有する電歪型、磁歪型のいずれの振動子も使用でき、特
に限定はされないが、電気、機械変換効率の優れた電歪
型動子を用いるのが好ましい。超音波振動源で発生した
超音波振動は、振動伝達具（１）によって伝達拡大さ
れ、作業部（２）の先端で最大振幅となるが、その振幅
は、１００〜２００μｍに達する。これ以上に振幅を上
げると、切削速度はより大きくなるが、切削部の焦げや
作業部（２）の耐久性の劣化、切削音が大きい等の問題
を生ずるので、上限振幅は２００μｍ程度とするのが好
ましいが、技術的には特に限定されるものではない。ま
た、共振周波数は２０〜４５ＫＨｚが好ましく、２２〜
４０ＫＨｚで特に良い振動が得られる。As the ultrasonic vibration source, any of an electrostrictive and a magnetostrictive vibrator having a liquid passage therein can be used. Although not particularly limited, an electrostrictive vibrator excellent in electric and mechanical conversion efficiency is used. It is preferable to use The ultrasonic vibration generated by the ultrasonic vibration source is transmitted and expanded by the vibration transmitting tool (1), and has a maximum amplitude at the tip of the working unit (2). The amplitude reaches 100 to 200 μm. If the amplitude is further increased, the cutting speed becomes higher, but problems such as scorching of the cutting part, deterioration of the durability of the working part (2), and loud cutting noise occur. Therefore, the upper limit amplitude is set to about 200 μm. Is preferred, but technically it is not particularly limited. Further, the resonance frequency is preferably 20 to 45 KHz,
Particularly good vibration is obtained at 40 KHz.

【０００７】振動伝達具（１）の内部には、超音波振動
源内部の液体通路に連通して長さ方向に延びた液体通路
（５）を有し、液体通路（５）の先端側は作業部（２）
の後方近傍に設けられた液体噴出孔（６）で開口してい
る。そして、作業部（２）の形状は、図２に示したよう
に、断面積が一定で直線状をなす挿入部（７）の先端部
に、凹形状部（３）が設けられている。[0007] Inside the vibration transmitting tool (1), there is provided a liquid passage (5) extending in the longitudinal direction in communication with the liquid passage inside the ultrasonic vibration source, and the tip side of the liquid passage (5) is provided. Working part (2)
The opening is provided by a liquid ejection hole (6) provided in the vicinity of the rear of the container. As shown in FIG. 2, the working section (2) has a concave section (3) at the distal end of an insertion section (7) having a constant cross-sectional area and a linear shape.

【０００８】図３は、振動伝達具（１）の断面積を変化
させて、超音波振動の振幅を拡大させる形状の例を示し
たものであるが、切削に必要な振幅が振動体で発生した
振幅にほぼ等しい場合には、作業部（２）までの断面積
を変化させずに、（ｃ）図に示すように細い形状にする
のが狭い箇所での作業に適し、また視野を確保でき良
い。図３（ａ）（ｂ）のように、振動伝達具（１）の後
方側の径を太くする場合でも先端側は細くする。さらに
それに続く挿入部（７）は、特に限定はされないが、超
音波振動に対する耐久性や、施術対象となる脊椎等の生
体構造に応じて先端から３〜５０ｍｍの範囲で断面積を
一定にするのが良い。これによって、先端の作業部
（２）を狭い場所で深く挿入することができる。挿入部
（７）の外径形状は、特に限定されるものではなく、円
筒形や、図２に示すような角柱形、角椎形等の対称形で
あればいずれでも良い。FIG. 3 shows an example of a shape in which the amplitude of the ultrasonic vibration is increased by changing the cross-sectional area of the vibration transmitting tool (1). The amplitude required for cutting occurs in the vibrating body. When the amplitude is almost equal to the amplitude, it is suitable to work in a narrow place as shown in FIG. 3 (c) without changing the cross-sectional area up to the working part (2), and to secure the field of view. Good done. As shown in FIGS. 3A and 3B, even when the diameter on the rear side of the vibration transmission tool (1) is increased, the distal end side is reduced. Further, the subsequent insertion portion (7) is not particularly limited, but has a constant cross-sectional area within a range of 3 to 50 mm from the distal end depending on the durability against the ultrasonic vibration and the anatomy such as the spine to be treated. Is good. Thereby, the working part (2) at the tip can be inserted deeply in a narrow place. The outer diameter shape of the insertion portion (7) is not particularly limited, and may be any cylindrical shape, or any symmetrical shape such as a prismatic shape or a square vertebra shape as shown in FIG.

【０００９】作業部（２）あるいは挿入部（７）の幅
は、術式や、生体の施術対象部位によっても異なるが、
刃形状とは異なり、１．５〜４．０ｍｍ程度とするのが
好ましい。また、作業部（２）の先端には凹形状部
（３）が設けられていて、施術時には、図４に示したよ
うに、荒削りした後の生体組織（９）の角部に接触面
（８）を押し当て位置決めを行い、切削する構造となっ
ている。また、表面からの溝状削開も可能であり、その
際凹型の形状により位置ズレをおこさず安全性に優れて
いる。その為少ない力で削除、削開が可能であり更に安
全性が高くなる。凹形状部の（３）の深さ形状は特に限
定されず、接触面（８）を生体組織に押し当て超音波振
動を加えても位置がずれない形状であればよい。また、
接触面（８）は平面には限らず曲面でも良い。The width of the working part (2) or the insertion part (7) varies depending on the operation method and the part of the living body to be treated.
Unlike the blade shape, it is preferable to set it to about 1.5 to 4.0 mm. In addition, a concave portion (3) is provided at the distal end of the working portion (2), and at the time of treatment, as shown in FIG. 4, a contact surface ( 8) It is structured to press and position and cut. In addition, a groove-like cut from the surface is also possible. At this time, the concave shape does not cause a positional shift and is excellent in safety. Therefore, it is possible to delete and cut with a small force, and the safety is further improved. The depth shape of the concave portion (3) is not particularly limited, and may be any shape as long as the position does not shift even when the contact surface (8) is pressed against the living tissue and ultrasonic vibration is applied. Also,
The contact surface (8) is not limited to a flat surface but may be a curved surface.

【００１０】作業部（２）あるいは挿入部（７）の後方
近傍に設けられた液体噴出孔（６）は、作業部（２）の
先端の方向に向かってイリゲーション液を噴出するよう
に調整されていれば、液体噴出孔（６）の開口位置は特
に限定されない。しかし作業性からみて開口位置は作業
部凹部中央近傍が望ましい。イリゲーション液の液体噴
出孔（６）より超音波振動によって噴出したイリゲーシ
ョン液は、図４に示すように、作業部（２）先端もしく
は生体組織（９）の切削部位周辺に噴出し、超音波振動
によって切削する際の摩擦熱の冷却と、術部の洗浄に使
用される。また、液体噴出孔（６）の開口径について
は、特に限定はないが、液体通路（５）の直径より小さ
い方が好ましい。A liquid ejection hole (6) provided near the rear of the working section (2) or the insertion section (7) is adjusted so as to eject the irrigation liquid toward the tip of the working section (2). If so, the opening position of the liquid ejection hole (6) is not particularly limited. However, from the viewpoint of workability, the opening position is desirably near the center of the concave portion of the working portion. As shown in FIG. 4, the irrigation liquid ejected from the liquid ejection hole (6) of the irrigation liquid by ultrasonic vibration is ejected to the tip of the working unit (2) or the vicinity of the cut portion of the living tissue (9), and the ultrasonic vibration is applied. It is used for cooling frictional heat during cutting and cleaning the surgical site. The opening diameter of the liquid ejection hole (6) is not particularly limited, but is preferably smaller than the diameter of the liquid passage (5).

【００１１】[0011]

【発明の効果】本発明の従うと超音波振動により生体組
織の骨化した組織や硬組織を切削、分離する作業を従来
の外科手術用具に比べて技術の熟練を必要とせず、かつ
迅速に切断でき、また、長時間連続して高振幅で使用で
きるので外科手術用具として好適である。According to the present invention, the operation of cutting and separating the ossified or hard tissue of the living tissue by ultrasonic vibration requires less skill than the conventional surgical tools and can be performed quickly. Since it can be cut and can be used at a high amplitude continuously for a long time, it is suitable as a surgical tool.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例となる外科手術用具の全体構
造を示す図である。FIG. 1 is a view showing the overall structure of a surgical tool according to one embodiment of the present invention.

【図２】本発明の一実施例となる外科手術用具の、先端
作業部の形状を示す図である。FIG. 2 is a view showing a shape of a distal working portion of a surgical instrument according to one embodiment of the present invention.

【図３】本発明の外科手術用具の、振動伝達具後方側の
形状を示す図である。FIG. 3 is a view showing the shape of the surgical instrument of the present invention on the rear side of the vibration transmission tool.

【図４】本発明の外科手術用具の、使用状況とイリゲー
ション液の噴出方向を示す図である。FIG. 4 is a view showing a use state and a direction of ejection of an irrigation liquid of the surgical instrument of the present invention.

【図５】本発明の外科手術用具の使用状況を示す図であ
る。FIG. 5 is a diagram showing a use situation of the surgical instrument of the present invention.

【図６】本発明の外科手術用具の使用状況を示す図であ
る。FIG. 6 is a diagram showing the usage of the surgical instrument of the present invention.

【符号の説明】[Explanation of symbols]

１ 振動伝達具 ２ 作業部 ３ 凹形状部 ４ 接続ネジ ５ 液体通路 ６ 液体噴出孔 ７ 挿入部 ８ 接触面 ９ 生体組織 １０ 術者の視野 DESCRIPTION OF SYMBOLS 1 Vibration transmission tool 2 Working part 3 Concave part 4 Connection screw 5 Liquid passage 6 Liquid ejection hole 7 Insertion part 8 Contact surface 9 Living tissue 10 Field of view of operator

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 超音波振動により生体組織の骨化した組
織もしくは硬組織を切削、分離する外科手術装置の、先
端部は超音波振動の腹となり生体組織に接する作業部を
有し、長さ方向に延びた液体通路を有する振動伝達具で
あって、該作業部は、振動の腹となる先端部が凹形状と
なし、該凹部に続く後端側近傍には挿入部を有すること
を特徴とする外科手術用具。1. A surgical apparatus for cutting and separating ossified or hard tissue of a living tissue by ultrasonic vibration, the distal end of which has a working part which becomes an antinode of ultrasonic vibration and comes into contact with the living tissue. A vibration transmitting tool having a liquid passage extending in the direction, wherein the working portion has a concave portion at the tip end serving as an antinode of vibration, and has an insertion portion near the rear end side following the concave portion. And surgical tools. 【請求項２】 液体通路の先端側には、該挿入部の後方
近傍に開口し、該作業部の先端部の方向にイリゲーショ
ン液を噴出する液体噴出孔を設けた請求項１記載の外科
手術用具。2. The surgical operation according to claim 1, wherein a liquid ejection hole is provided at a distal end side of the liquid passage near the rear of the insertion portion and ejects an irrigation liquid toward the distal end portion of the working portion. Tools.
JP9109320A 1997-04-25 1997-04-25 Surgical operation appliance Pending JPH10295700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9109320A JPH10295700A (en) 1997-04-25 1997-04-25 Surgical operation appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9109320A JPH10295700A (en) 1997-04-25 1997-04-25 Surgical operation appliance

Publications (1)

Publication Number Publication Date
JPH10295700A true JPH10295700A (en) 1998-11-10

Family

ID=14507245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9109320A Pending JPH10295700A (en) 1997-04-25 1997-04-25 Surgical operation appliance

Country Status (1)

Country Link
JP (1) JPH10295700A (en)

Cited By (130)

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US6497715B2 (en) * 2000-11-07 2002-12-24 Miwatec Incorporated Ultrasonic hand piece and ultrasonic horn for use with the same
JP2010534523A (en) * 2007-07-27 2010-11-11 エシコン・エンド−サージェリィ・インコーポレイテッド Ultrasonic surgical instrument
US8882791B2 (en) 2007-07-27 2014-11-11 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instruments
US8951248B2 (en) 2009-10-09 2015-02-10 Ethicon Endo-Surgery, Inc. Surgical generator for ultrasonic and electrosurgical devices
US8951272B2 (en) 2010-02-11 2015-02-10 Ethicon Endo-Surgery, Inc. Seal arrangements for ultrasonically powered surgical instruments
US9017326B2 (en) 2009-07-15 2015-04-28 Ethicon Endo-Surgery, Inc. Impedance monitoring apparatus, system, and method for ultrasonic surgical instruments
US9050124B2 (en) 2007-03-22 2015-06-09 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument and cartilage and bone shaping blades therefor
US9066747B2 (en) 2007-11-30 2015-06-30 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument blades
US9072539B2 (en) 2008-08-06 2015-07-07 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
US9095367B2 (en) 2012-10-22 2015-08-04 Ethicon Endo-Surgery, Inc. Flexible harmonic waveguides/blades for surgical instruments
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