JPH0824266A - Horn for ultrasonic operation apparatus - Google Patents

Horn for ultrasonic operation apparatus

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Publication number
JPH0824266A
JPH0824266A JP6168121A JP16812194A JPH0824266A JP H0824266 A JPH0824266 A JP H0824266A JP 6168121 A JP6168121 A JP 6168121A JP 16812194 A JP16812194 A JP 16812194A JP H0824266 A JPH0824266 A JP H0824266A
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JP
Japan
Prior art keywords
horn
diameter
shape
part
ultrasonic
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
JP6168121A
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Japanese (ja)
Inventor
Akira Harada
Masato Higuma
Kazuhiko Yagata
明 原田
和彦 屋ケ田
正人 樋熊
Original Assignee
Sumitomo Bakelite Co Ltd
住友ベークライト株式会社
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.)
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Application filed by Sumitomo Bakelite Co Ltd, 住友ベークライト株式会社 filed Critical Sumitomo Bakelite Co Ltd
Priority to JP6168121A priority Critical patent/JPH0824266A/en
Publication of JPH0824266A publication Critical patent/JPH0824266A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To provide a horn for an ultrasonic operation apparatus by which a high amplitude expansion rate and a large working area can simultaneously by obtained. CONSTITUTION:A diameter expanding part 5 expanding in a shape of a horn is arranged at the tip part of a small-diameter part 3 following a large-diameter part 4 of a horn of an ultrasonic operation apparatus in which an organic tissue is crushed and sucked away by ultrasonic vibration. Then, a step curved surface 6 of the diameter-expanded part is formed in a single R shape or a compound R shape and a recessed hollow part is preferably provided on the internal surface of the diameter-expanded part to be made a thin form.

Description

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

【0001】 [0001]

【産業上の利用分野】本発明は、生体組織を破砕し、吸引除去するための超音波手術用具のホーンに関するものである。 The present invention relates to a crushing biological tissue, to a horn of the ultrasonic surgical instrument for aspirating removed.

【0002】 [0002]

【従来の技術】超音波の機械的振動を利用して生体組織を破砕して、さらに乳化し吸引除去する超音波手術用具、謂る超音波メスは各種外科手術に使用されている。 By crushing the living tissue by utilizing the mechanical vibrations of the Related Art Ultrasonic, further emulsified ultrasonic surgical instrument removed by suction, Iru ultrasonic scalpel is used in various surgical procedures.

【0003】この超音波手術用具の重要な構成部分であり、生体組織と接触して機械的振動により破砕を行うホーンは、図4に示したように、接続部(12)において超音波振動源である振動子とネジ等の適宜な方法によって接続され、振動子の超音波振動をホーン先端の作用部(13)へ伝達増幅するものである。 [0003] an important component of the ultrasonic surgical instrument, horn performing crushing by mechanical vibrations in contact with living tissue, as shown in FIG. 4, the ultrasonic vibration source at a connection (12) it is connected by a suitable method such as vibrators and the screw is, is for transmitting amplified ultrasonic vibration of the vibrator acting portion of the horn tip to (13). 通常、ホーン(1 Normal, horn (1
1)には長軸方向に貫通孔があいており、貫通穴は先端の作用部(13)で破砕された生体組織及び洗浄液、体液等を吸引し、除去するための吸引孔(14)として使用される。 The 1) and Ai is longitudinally into the through hole, the through hole fractured living tissue and washings by the action of the tip (13), the body fluid was aspirated, the suction hole (14) for removing used.

【0004】超音波ホーンの形状は、振動子の振動振幅を拡大させるため、先端部分において小径化した形状になっている。 [0004] of the ultrasonic horn shape, in order to enlarge the vibration amplitude of the vibrator, and is smaller in diameter shape at the tip portion. 一般に小径部と大径部の面積比が大きいほど振幅の拡大率が大きくなり、ホーン先端での高振幅化が図られ、その組織破砕力は増大される。 Generally as the amplitude enlargement rate of the large area ratio of the small diameter portion and the large diameter portion is increased, the high amplitude of the horn tip is achieved, the tissue crushing force is increased.

【0005】 [0005]

【発明が解決しようとする課題】従って、破砕力を高めるためには、大径部の径を大きくするか、小径部の径を小さくすることが必要である。 [SUMMARY OF THE INVENTION Therefore, in order to increase the crushing force, increase the diameter of the large-diameter portion, it is necessary to reduce the diameter of the small diameter portion. ところが、ホーンは手に持って組織へ接触させるハンドピース内に内蔵されるため、操作性の問題から大径部の大きさには限界がある。 However, the horn to be incorporated in the handpiece into contact with the hands to tissue from operability issues to the size of the large diameter portion is limited.
このため高破砕力を得るためには、小径部を細くする手法が採られるが、頭蓋骨内底や軟骨の切削、肝硬変や体表面の痣の除去手術等では、振幅を落とさずに作用部の面積を大きくしたホーンが必要とされる。 Therefore in order to obtain a high crushing force method in which the thin small diameter portion is taken, cut in the skull in the bottom and cartilage, liver cirrhosis and the body surface in the surgical removal, etc. of bruising action part without reducing amplitude larger the horn area is required.

【0006】本発明は、このような医療現場からの要求に応えるため、高い振幅拡大率と作用面積の広い超音波手術用具のホーンを提供することを目的としたものである。 [0006] The present invention, in order to meet the demand from such medical field, it is intended to provide a wide horn of the ultrasonic surgical instrument of the working area high amplitude magnification.

【0007】 [0007]

【課題を解決するための手段】上記の目的を達成するための本発明による超音波手術用具のホーンは、超音波振動により生体組織を破砕し、吸引除去する超音波手術用具のホーンの大径部分に連続する小径のホーン先端部にラッパ状に拡開する膨径部を有することを構造上の特徴とする。 Means for Solving the Problems The horn of the ultrasonic surgical instrument according to the present invention for achieving the above object, the ultrasonic vibrations to disrupt biological tissue, larger diameter of the horn of the ultrasonic surgical instrument removed by suction to have a bulge for expanding like a horn in the horn tip of the small diameter continuous with parts and structural features.

【0008】本発明の超音波ホーンは、ホーン先端部分が小径で振動子側が大径部分のホーン形状において、前記ホーン先端部分を可能な限り小径化することで断面積を小さくし、その先端部にラッパ状に拡開する膨径部を設置した構造に特徴づけられるが、特にホーン先端部の膨径部と該膨径部より後部側の小径部との間の段差曲面が単一R形状もしくは複合R形状になるように設計することが好ましい態様となる。 [0008] Ultrasonic horns of the present invention, in the horn shape of the vibrator-side large diameter portion horn tip portion with a small diameter, the cross-sectional area smaller by diameter as much as possible the horn tip portion, the tip portion step curved single R shape between the small diameter portion of it characterized in the structure in which established a bulge for expanding like a horn, in particular the bulge of the horn tip and bulging diameter than the rear side or the it is a preferred embodiment be designed to be a composite R shape. またホーン先端部のラッパ状に拡開する膨径部には、凹状の窪み部を設けて拡開縁部を肉薄形状とすることが望ましい。 Further the bulge for expanding in a trumpet-shaped horn tip, it is desirable that the spreading edge and the thin shape is provided a concave recess.

【0009】なお、上記の単一R形状とは、曲率半径の中心位置が1点で描かれる単一の円弧曲線を意味し、複合R形状とは、曲率半径と中心位置が異なる複数の円弧を接続の位置で接続した連続的な曲線を指し、この場合には単一R形状に比べて拡開比率が大きくなる。 [0009] Note that the above-mentioned single R-shaped, stands for a single arc curve center position of the radius of curvature is drawn at one point, and the combined R-shape, a plurality of arc curvature radius and the center position is different from the points to continuous curve connected at the position of connection, expansion ratio larger than that in a single R-shape in this case.

【0010】 [0010]

【作用】本発明に係る超音波手術用具のホーンは、ホーン先端部にラッパ状に拡開する膨径部が形成されているため、ホーン先端部が小径であるにも拘らず先端での作用部は大きな面積が得られる。 Horn of the ultrasonic surgical instrument according to the present invention, since the radially expanded portion expanding in a trumpet shape on the horn tip is formed, the action of the horn tip at the tip despite a small diameter parts are a large area is obtained. とくに前記の膨径部と小径部との間に形成される段差曲面を、単一R形状もしくは複合R形状とし、膨径部の内面に凹状の窪み部を形成して肉薄形状に設計することにより、先端の作用面積の増大と共に超音波エネルギーの円滑な伝達を図ることができる。 It particularly a stepped curved surface formed between said bulge and the small diameter portion, and a single R shape or complex R shape, designed to thin shape to form a recess of the concave inner surface of the bulge Accordingly, it is possible to achieve a smooth transmission of ultrasonic energy with increasing active area of ​​the tip.

【0011】また、膨径部の形成は、大径部分に対するホーン先端部の断面積比率を相対的に大きくすることを可能とし、一層の小径化が図られるから、振幅拡大率が効果的に増大する。 [0011] The formation of the bulge is it possible to relatively large cross-sectional area ratio of the horn tip relative large-diameter portion, since the further smaller diameter is achieved, effectively amplitude magnification increased.

【0012】このように、ホーン先端に高い振幅が伝達され、同時に先端の作用部は大きな面積が得られるため、特に頭蓋骨内底や軟骨の切削、肝硬変や体表面積の痣の除去手術等の比較的広い面積を破砕吸引除去する場合に、非常に効率的な手術を行うことができる。 [0012] Thus, the transmitted high amplitude to the horn tip, at the same time for the action of the tip of a large area is obtained, in particular cutting the skull in the bottom and cartilage, compare the removal surgery such as aza cirrhosis and body surface area the target large area when crushing suction removal can be performed very efficient operation.

【0013】 [0013]

【実施例】以下、本発明を図1〜図3に示した実施例に基づいて詳細に説明する。 EXAMPLES Hereinafter, will be described in detail with reference to the embodiments shown the present invention in FIGS. なお、実施例ではステップ形状について説明するが、本発明はこの形状に限定されるものではなく、コニカル形、エクスポネンシャル形、カテノイダル形などホーン先端が小径のタイプであれば全ての超音波ホーンが適用対象となる。 Although in the embodiment described step shape, the present invention is not limited to this shape, conical shape, exponential shape, all of the ultrasonic horn when the horn tip small diameter type such Katenoidaru type There will apply subject.

【0014】図1は本発明に係る超音波手術用具のホーンの全体断面図を示したもので、(1)は中心部を貫通して破砕した組織を吸引除去する吸引孔、(2)は基端部に設置された接続部、(3)はホーン先端部分の小径部、(4)は振動子側の大径部、(5)はホーン先端部の膨径部である。 [0014] Figure 1 shows the overall sectional view of a horn of an ultrasonic surgical instrument according to the present invention, (1) the suction holes to aspirate the tissue disrupted through the center portion, (2) connecting portions disposed at the proximal end portion, (3) the small-diameter portion of the horn tip portion (4) of the large diameter portion of the vibrator side, (5) is a bulge of the horn tip.

【0015】高い振幅拡大率を得るためには、小径部(3)と大径部(4)の断面積比を大きくすることが効率的であるが、実用上は、ハンドピースの操作性の点から大径部(4)の外径は約16mmが限度である。 In order to obtain a high amplitude magnification is possible to increase the cross-sectional area ratio of the small diameter portion (3) large-diameter portion (4) is efficient, practical, the handpiece operability the outer diameter of the large diameter portion (4) from point of about 16mm is the limit. 頭蓋骨内底や軟骨、あるいは肝硬変の肝細胞を効率良く破砕するためには、250〜300μmの振幅が必要であり、大径部(4)の外径が16mm程度の場合、上記の振幅を得るための小径部(3)の外径は約2.3〜2. To crush the skull in the bottom and cartilage, or a hepatocyte cirrhosis efficiently, it is necessary amplitude of 250-300, the outer diameter of the large diameter portion (4) if the order of 16 mm, to obtain the amplitude of the outer diameter of about 2.3 to 2 of the small diameter portion for (3).
5mmとなる。 A 5mm.

【0016】図4に示した従来のホーンでは、その作用面積が小さく、頭蓋骨内底や軟骨、あるいは広範囲の痣に関しては、細かい細工のためには好都合ではあるものの、大部分の大胆に切削しても差しつかえない部位については非効率的である。 [0016] In the conventional horn shown in Figure 4, small its active area, intracranial bottom and cartilage or with respect to a wide range of bruising, albeit advantageous in order to fine workmanship, boldly cut most it is inefficient for sites that may safely be.

【0017】本発明の超音波手術用具のホーンは、先端の膨径部(5)の外径を、例えば4〜5mmとすることで作用面積が増大し、広範囲の部位に対して効率の良い破砕を行うことができる。 The horn of the ultrasonic surgical instrument of the present invention, the bulge of the distal end of the outer diameter of (5), increases the active area, for example, it is 4 to 5 mm, good efficiency for a wide range of sites crushing can be carried out. 膨径部(5)の外径に関しては特に制約をしないが、先端部が受ける負荷が大きくなり発振の妨げとならないためには、10mm以下とするのが好ましい。 Although not particularly restricted with respect to the outer diameter of the bulge (5), in order to load the tip is subjected does not interfere with the increased and oscillation is preferably set to 10mm or less.

【0018】ホーン先端部の膨径部(5)と該膨径部より後部側の小径部(3)との間の段差曲面(6)は、膨径部(5)に超音波エネルギーが円滑に伝達するように単一R形状もしくは複合R形状をなす連続的な円弧曲面に形成することが好ましい。 [0018] step curved surface between the upset portion of the horn tip (5) and the bulging small diameter portion of the rear side of the diameter (3) (6), ultrasonic energy is smoothly bulge (5) it is preferable to form a continuous arc curved surface forming the single R shape or complex R-shape so as to transmit to. また、膨径部(5)は低重量であるほど超音波発振の負荷が掛からないので、実用強度が保てる範囲で膨径部(5)の内面を凹状に切削して拡開縁部を肉薄形状とするのが望ましい。 Moreover, since the bulge (5) is a load of a higher ultrasonic wave oscillator at a low weight is not applied, thin and expanding edge bulge to the extent that practical strength can be kept the inner surface (5) by cutting the concave it is desirable to shape.

【0019】図2は、膨径部(5)の内面に凹状の窪み部(7)を形成して肉薄形状としたホーン先端部を例示したものである。 [0019] Figure 2 is an illustration of a horn tip was formed to thin shape concave recess (7) on the inner surface of the bulge (5). また、図3は図2とは異なる椀形状の膨径部(5)とし、その内面をくり抜いて窪み部(7) Further, FIG. 3 is different from the bulge of the bowl-shaped (5), and the recessed portion hollowed its inner surface and FIG. 2 (7)
を形成した態様である。 It is formed manner the. このようにして膨径部(5)を軽量化することにより超音波エネルギーがホーン先端に一層円滑に伝達される。 Ultrasonic energy by the weight of the bulge (5) In this way is more smoothly transmitted to the horn tip.

【0020】超音波ホーンの材質は、チタン合金、アルミニウム合金、ステンレス鋼などの耐腐食性のある金属であって、音速が1000〜6000m/sec程度の超音波振動に十分耐える材料で構成される。 The material of the ultrasonic horn, titanium alloy, aluminum alloy, a corrosion-resistant is metal such as stainless steel, and speed of sound at a sufficiently withstand material ultrasonic vibration of approximately 1000~6000m / sec . 最も好ましい材質はチタン合金である。 The most preferable material is a titanium alloy.

【0021】 [0021]

【発明の効果】以上のとおり、本発明の超音波手術用具のホーンは、小径のホーン先端部にラッパ状に拡開する膨径部が形成されているから、従来の超音波手術用具のホーンに比べて、高い振幅を維持しながら、広い面積を破砕吸引除去できるので、破砕効率が著しく高まり、手術時間の短縮が期待でき、また、先端の面積が広い分なめらかな切削面とすることができる。 As described above, according to the present invention, the horn of the ultrasonic surgical instrument of the present invention, since the bulge for expanding like a horn in the horn tip of the small diameter is formed, a conventional ultrasonic surgical instrument horn compared to, while maintaining a high amplitude, since it crushed aspirate large area, crushing efficiency is increased significantly, reducing the operation time can be expected, also be the area of ​​the tip and wider min smooth cutting surface it can.

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

【図1】本発明に係る超音波手術用具のホーンを例示した全体断面図である。 1 is an overall cross sectional view illustrating a horn of an ultrasonic surgical instrument according to the present invention.

【図2】膨径部の内面に凹状の窪み部を設けた構造のホーン先端部を示した部分断面説明図である。 2 is a partial sectional view showing a horn tip of the structure in which a concave recess on the inner surface of the bulge.

【図3】膨径部の内面に凹状の窪み部を設けた別の構造のホーン先端部を示した部分断面説明図である。 3 is a partial sectional view showing a horn tip of another structure in which a concave recess on the inner surface of the bulge.

【図4】従来構造による超音波手術用具のホーンを示した全体断面図である。 4 is an overall cross sectional view showing a horn of an ultrasonic surgical instrument according to the conventional structure.

【符号の説明】 DESCRIPTION OF SYMBOLS

1,14 吸引孔 2,12 接続部 3 小径部 4 大径部 5 膨径部 6 段差曲面 7 窪み部 11 ホーン 13 作用部 1,14 suction holes 2, 12 connection portion 3 small diameter portion 4 large diameter portion 5 bulge 6 stepped curved 7 recess 11 the horn 13 acting portion

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 超音波振動により生体組織を破砕し、吸引除去する超音波手術用具のホーンにおいて、大径部分に連続する小径のホーン先端部にラッパ状に拡開する膨径部を有することを特徴とする超音波手術用具のホーン。 1. A crushing living tissue by ultrasonic vibration, the horn of the ultrasonic surgical instrument removed by suction, to have a bulge for expanding like a horn in the horn tip of the small diameter continuous with the large-diameter portion horn of the ultrasonic surgical instrument according to claim.
  2. 【請求項2】 ホーン先端部の膨径部と該膨径部より後部側の小径部との間の段差曲面が単一R形状もしくは複合R形状をなす、請求項1記載の超音波手術用具のホーン。 Wherein step curved surface between the rear side of the small diameter portion from the upset portion and bulging diameter of the horn tip form a single R-shaped or complex R shape, the ultrasonic surgical instrument of claim 1, wherein horn.
  3. 【請求項3】 ホーン先端部のラッパ状に拡開する膨径部が、内面に凹状の窪み部が形成された肉薄形状である、請求項1または2記載の超音波手術用具のホーン。 Wherein the bulge for expanding in a trumpet-shaped horn tip, a thin shape recess of the concave is formed on the inner surface, according to claim 1 or 2 horn of the ultrasonic surgical instrument according.
JP6168121A 1994-07-20 1994-07-20 Horn for ultrasonic operation apparatus Pending JPH0824266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6168121A JPH0824266A (en) 1994-07-20 1994-07-20 Horn for ultrasonic operation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6168121A JPH0824266A (en) 1994-07-20 1994-07-20 Horn for ultrasonic operation apparatus

Publications (1)

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JPH0824266A true JPH0824266A (en) 1996-01-30

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