【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、特に硬
骨組織及び軟骨組織を切削分離するための外科手
術装置の超音波ホーンに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ultrasonic horn of a surgical operating device for cutting and separating biological tissue, particularly bone tissue and cartilage tissue, by ultrasonic vibration.
従来、神経外科や形成外科における骨切り術等
では、生物組織、特に硬骨組織、軟骨組織及び骨
膜等の切削分離には、Kerrison鉗子、歯槽骨鉗
子、ドリル、メス、ガウジユ（円のみ）等が用い
られているが、切削分離作業の効率が悪く長時間
を要し、手術者に多大の労力がかかり、且つ切削
分離に高度の技術を必要とするという欠点があつ
た。 Conventionally, in osteotomies in neurosurgery and plastic surgery, Kerrison forceps, alveolar bone forceps, drills, scalpels, gouges (circle only), etc. are used to cut and separate biological tissue, especially bone tissue, cartilage tissue, and periosteum. However, the cutting and separation work is inefficient and takes a long time, requires a great deal of labor on the part of the operator, and requires advanced techniques for cutting and separation.
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
−89197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、超音波振動源に接
続された骨髄腔ラスプを有する外科用手術用具な
どが知られている。しかし、超音波振動を利用し
て生物組織を破砕し吸引除去する外科手術用具
は、生物組織、特に骨などの硬い組織の切削や骨
膜等の分離に使用するのは難しく、また、超音波
振動源に接続された骨髄ラスプを有する外科手術
用具は、軟骨や硬骨の切断は可能であるが、切断
面の生物組織をラスプの摩擦熱で頽壊し、骨膜等
の分離及び切削作業に使用するのは難しく、連続
作業の場合超音波振動により手術用具が発熱し、
手術具自体の機械的強度も低下するという欠点が
あつた。 In addition, many surgical tools have been developed that utilize ultrasonic waves. Surgical tools (for example, , special public service 1977
89197) and a surgical tool having a medullary cavity rasp connected to an ultrasonic vibration source, which was developed for cutting and separating hard and soft biological tissues. However, surgical tools that use ultrasonic vibrations to crush and remove biological tissues by suction are difficult to use for cutting biological tissues, especially hard tissues such as bones, or separating periosteum. Surgical tools that have a bone marrow rasp connected to a source can cut cartilage and bone, but the biological tissue on the cut surface is destroyed by the frictional heat of the rasp, making it difficult to use for separating and cutting periosteum, etc. This is difficult, and during continuous operation, surgical tools generate heat due to ultrasonic vibrations.
The disadvantage was that the mechanical strength of the surgical tool itself was also reduced.
本考案は、従来のこの様な問題点を解決するこ
とを目的としたもので、合わせて、骨を削る際の
時間がかかる、精密に削れない等の問題を解消す
ることの出来る形状の医療用超音波ホーンを提供
しようとするものである。 The purpose of this invention is to solve these conventional problems, and also to create a medical device with a shape that can solve the problems such as the time it takes to cut bones and the inability to cut them precisely. The purpose of the present invention is to provide an ultrasonic horn for use.
即ち本考案は、超音波振動により生物組織、特
に硬骨組織及び軟骨組織を切削、分離する外科手
術装置のホーンであつて該ホーンの先端部が球形
状をなし、且つその表面がローレツト状になつて
いることを特徴とする医療用超音波ホーンであ
る。 That is, the present invention is a horn for a surgical device that cuts and separates biological tissue, particularly bone tissue and cartilage tissue, by ultrasonic vibration, and the tip of the horn has a spherical shape, and the surface thereof is knurled. This is a medical ultrasonic horn characterized by:
以下、図面に基づいて本考案を詳しく説明す
る。 Hereinafter, the present invention will be explained in detail based on the drawings.
第１図は、本考案の一実施例となる医療用超音
波ホーンの側面図（一部断面図）である。ホーン
１の先端部には、外科手術において生物組織に直
接接触し作業部となる球状体３を有しており、球
状体３の表面は、第２図に示すごとくローレツト
状に加工されている。ローレツト形状には片目、
両目等があるが、特に限定されるものではない。 FIG. 1 is a side view (partially sectional view) of a medical ultrasonic horn that is an embodiment of the present invention. The tip of the horn 1 has a spherical body 3 that comes into direct contact with biological tissue and serves as a working part during surgical operations, and the surface of the spherical body 3 is knurled as shown in FIG. . The knurled shape has one eye,
There are two eyes, etc., but there is no particular limitation.
ホーン１には送液通路２となる貫通孔があいて
おりホーン１先端の球状体３の表面に複数個の開
口端を有すると共に、その後端は接続部４によつ
て、図示してないが振動源の送液通路とネジ等の
適宜な方法で接続されている。接続部４はホーン
１後方の側部に設け、ホーン１の途中に送液通路
２の後方開口端を設けても構わない。送液通路２
は、ホーン１や施術部を冷却し、あるいは施術部
を洗浄するためのイリゲーシヨン液（生理食塩水
等）の通路となるもので、第３図に示すごとく球
状体３の内部で分岐させ、複数個の分岐路７を球
状体３の表面に開口させる。 The horn 1 has a through hole that serves as a liquid feeding passage 2, and has a plurality of open ends on the surface of a spherical body 3 at the tip of the horn 1, and the rear end is connected to a connecting portion 4 (not shown). It is connected to the liquid feeding path of the vibration source by an appropriate method such as a screw. The connecting portion 4 may be provided on the rear side of the horn 1, and the rear opening end of the liquid feeding passage 2 may be provided in the middle of the horn 1. Liquid feeding passage 2
serves as a passage for irrigation liquid (physiological saline, etc.) for cooling the horn 1 and the treatment area or for cleaning the treatment area, and is divided into multiple channels by branching inside the spherical body 3 as shown in Fig. 3. branch passages 7 are opened on the surface of the spherical body 3.
第１図ではホーン１と球状体３は一体加工で作
られているが、第２図のように球状体３に接続部
５を設けて、ホーン１とネジ等適宜な方法により
接続し取り替え可能とすることも出来る。また、
第３図では、球状体３と接続部５の間に振動伝達
部６を設け、ホーン１と接続部５をネジ等適宜な
方法により接続することにより、球状体３を取り
替え可能としている。球状体３の寸法は使用目的
や施術部位によつても異なつてくるが、直径１〜
10mm程度の範囲とすれば良く、第２図、第３図の
例のように取り替え可能な構造とすれば、施術中
にも状況に応じて交換して使用することができ好
都合である。 In Fig. 1, the horn 1 and the spherical body 3 are made by integral processing, but as shown in Fig. 2, the spherical body 3 is provided with a connecting part 5, and can be connected and replaced with the horn 1 by an appropriate method such as a screw. It is also possible to do this. Also,
In FIG. 3, a vibration transmitting part 6 is provided between the spherical body 3 and the connecting part 5, and the spherical body 3 can be replaced by connecting the horn 1 and the connecting part 5 by a suitable method such as a screw. The dimensions of the spherical body 3 vary depending on the purpose of use and the treatment area, but the diameter is 1~
The range may be about 10 mm, and if the structure is replaceable as in the examples shown in FIGS. 2 and 3, it is convenient because it can be replaced during the treatment depending on the situation.
第４図は本考案の他の実施例となる医療用超音
波ホーンの全体図であり、ホーン１の前方に屈曲
部８を有している。その屈曲角度Ａはホーン１の
長軸方向に対して０〜90度望ましくは０〜40度で
ある。これによつて、施術対象部位が変わつて
も、外科手術用具を持ちかえたり、超音波ホーン
１の角度を大きく変えたりすることなく、施術を
続けることが出来好適である。 FIG. 4 is an overall view of a medical ultrasonic horn according to another embodiment of the present invention, which has a bent portion 8 at the front of the horn 1. The bending angle A is 0 to 90 degrees, preferably 0 to 40 degrees with respect to the longitudinal direction of the horn 1. This makes it possible to continue the treatment even if the treatment target region changes, without changing the surgical tools or changing the angle of the ultrasonic horn 1 significantly.
ホーン１および球状体３の材質としては、従来
より用いられているチタン合金、ステンレス鋼、
セラミツク等の耐食性や耐熱性の優れたものが望
ましいが、特に限定されるものではない。 The materials of the horn 1 and the spherical body 3 include conventionally used titanium alloy, stainless steel,
A material with excellent corrosion resistance and heat resistance, such as ceramic, is preferable, but is not particularly limited.
次に、本考案による超音波ホーンの作用の特徴
について述べる。 Next, the features of the action of the ultrasonic horn according to the present invention will be described.
従来より硬骨組織等の切断分離に使用されてい
るドリル、ガウジユ、あるいはラスプ等では、削
られた硬骨組織等の断端面が均一でなく、創傷治
癒期間が長いという欠点を有していたのに対し
て、本考案ではホーン先端を球形状にし、その表
面にきざみ目をつけローレツト状にして超音波振
動させることにより、断端面を均一かつ平滑に仕
上げることを可能にした。また、超音波ホーンと
して先端が１個の形状のみを有するものでは、硬
骨組織の切断等には有用であるが削る作業、つま
り面切削には適しないのに対して、本考案の超音
波ホーンは球形状の表面を用いるので、特に面切
削をスムーズに行うことが出来る。 Drills, gouges, rasps, etc., which have been conventionally used to cut and separate hard bone tissue, etc., have the disadvantage that the cut surface of the cut hard bone tissue, etc. is not uniform, and the wound healing period is long. In contrast, in the present invention, the tip of the horn is made into a spherical shape, the surface of which is knurled and subjected to ultrasonic vibration, making it possible to finish the stump surface uniformly and smoothly. In addition, an ultrasonic horn with only one tip is useful for cutting hard bone tissue, but is not suitable for shaving work, that is, surface cutting, whereas the ultrasonic horn of the present invention Because it uses a spherical surface, surface cutting can be performed particularly smoothly.
さらに、超音波ホーン先端の球形状に複数個の
送液通路の開口端を設けたことにより、また球状
体の全面をローレツト状にしたことにより、イリ
ゲーシヨン液が球状体全体に行きわたるので、超
音波ホーンの発熱を抑え、周辺組織への影響を最
小限にとどめることが出来る。 Furthermore, by providing the opening ends of multiple liquid feeding passages in the spherical shape of the tip of the ultrasonic horn, and by making the entire surface of the spherical body knurled, the irrigation liquid is distributed throughout the spherical body, making it possible to It is possible to suppress the heat generation of the sonic horn and minimize the impact on surrounding tissues.
本考案に従うと、生物組織、特に硬骨組織及び
軟骨組織の切削、分離作業が技術の熟練を要せず
施術時間を短縮出来る上に、精密な切削作業を行
うことが出来て施術部の断端面を均一で平滑に仕
上げることが出来るので、創傷治癒期間を従来よ
り大幅に短縮することが出来る。また、超音波ホ
ーンの冷却効果を高めることによつてホーンの劣
化及び周辺組織の壊死を防ぐことが出来るので、
硬骨組織等の切削、分離のための外科手術用具と
して有用である。 According to the present invention, the cutting and separation of biological tissue, especially bone tissue and cartilage tissue, does not require technical skill and the treatment time can be shortened.In addition, precise cutting can be performed and the stump of the treated area can be cut and separated. Since the surface can be finished uniformly and smoothly, the wound healing period can be significantly shortened compared to conventional methods. In addition, by increasing the cooling effect of the ultrasonic horn, it is possible to prevent deterioration of the horn and necrosis of surrounding tissues.
It is useful as a surgical tool for cutting and separating hard bone tissue, etc.
第１図は本考案の一実施例となる超音波ホーン
の側面図（一部断面図）、第２図及び第３図はそ
れぞれ本考案における超音波ホーンの球状体例を
示す図で、第２図は側面図、第３図は側面の断面
図である。また、第４図は本考案における超音波
ホーン他の実施例を示す図である。 FIG. 1 is a side view (partially sectional view) of an ultrasonic horn according to an embodiment of the present invention, and FIGS. 2 and 3 are views showing examples of spherical bodies of the ultrasonic horn according to the present invention. The figure is a side view, and FIG. 3 is a sectional view of the side. Further, FIG. 4 is a diagram showing another embodiment of the ultrasonic horn according to the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139216UJPH0529698Y2 (en) | 1988-10-27 | 1988-10-27 |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139216UJPH0529698Y2 (en) | 1988-10-27 | 1988-10-27 |
| Publication Number | Publication Date |
|---|---|
| JPH0271510U JPH0271510U (en) | 1990-05-31 |
| JPH0529698Y2true JPH0529698Y2 (en) | 1993-07-29 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988139216UExpired - LifetimeJPH0529698Y2 (en) | 1988-10-27 | 1988-10-27 |
| Country | Link |
|---|---|
| JP (1) | JPH0529698Y2 (en) |
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