JPH11128238A - Ultrasonic therapy device - Google Patents

Ultrasonic therapy device

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Publication number
JPH11128238A
JPH11128238A JP9295070A JP29507097A JPH11128238A JP H11128238 A JPH11128238 A JP H11128238A JP 9295070 A JP9295070 A JP 9295070A JP 29507097 A JP29507097 A JP 29507097A JP H11128238 A JPH11128238 A JP H11128238A
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JP
Japan
Prior art keywords
ultrasonic
transmitting member
vibration transmitting
vibration
coating
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
JP9295070A
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Japanese (ja)
Inventor
Manabu Ishikawa
学 石川
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
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Publication date
Application filed by Olympus Optical Co Ltd, オリンパス光学工業株式会社 filed Critical Olympus Optical Co Ltd
Priority to JP9295070A priority Critical patent/JPH11128238A/en
Priority claimed from US09/170,266 external-priority patent/US6129735A/en
Publication of JPH11128238A publication Critical patent/JPH11128238A/en
Priority claimed from US09/563,264 external-priority patent/US6887252B1/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To realize an ultrasonic therapy device with a vibration transmitting member with superior abrasion resistance and sufficient strength, by forming plural surface processed layers on at least a part of the vibration transmitting member in an ultrasonic therapy device with a vibration transmitting member. SOLUTION: Between an ultrasonic vibrating element and a vibration transmitting member 6 of a hand piece, a horn which mechanically amplifies ultrasonic vibration generated by the ultrasonic vibrating element to transmit to the vibration transmitting member 6 is equipped. The tip end of a sheath is opened and a jaw and the vibration transmitting member 6 are equipped therein protruded from the tip end face of the sheath. Around the vibration transmitting element, three layers of coatings 11, 12, 13 each with 3 μm of thickness are equipped orderly from the center. Parts to be processed by coating include positions where the vibration transmitting member 6 slides on other members to possibly generate abrasion and parts protruded to be exposed.

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、超音波振動によって生体内の患部組織を切除する等の処置を行う超音波治療装置に関する。 The present invention relates to relates to an ultrasonic therapy apparatus for performing treatment such ablating diseased tissue in an organism by ultrasonic vibration.

【0002】 [0002]

【従来の技術】従来より、超音波治療装置を用いて前立腺の切除や結石の破砕あるいは肝臓切除等が行われている。 Conventionally, crushing or liver resection like prostate resection and stones using ultrasonic treatment apparatus is being performed. かかる超音波治療装置は、超音波振動子、ホーン、 Such ultrasonic therapy device includes an ultrasonic transducer, horn,
振動伝達部材を連結して構成されており、超音波振動子から発生される超音波振動をホーンで機械的に増幅して振動伝達部材に伝達し、この振動伝達部材の先端部近傍に生体の患部組織を接触させて処置を行っている。 Is configured by connecting a vibration transmission member, the ultrasonic vibrations generated by the ultrasonic vibrator is transmitted to the vibration transmitting member is mechanically amplified by the horn, the biological near a distal end of the vibration transmitting member is doing the treatment is brought into contact with the affected tissue. このような超音波治療装置には、超音波振動によって組織を乳化、吸引して患部を破砕除去する例えばパイプ状のプローブを有する超音波吸引装置や、超音波振動によって発生する熱を利用して凝固切開を行う例えばハサミ状のプローブを有する超音波凝固切開装置等がある。 Such ultrasound therapy apparatus, emulsified tissue by ultrasonic vibration, or ultrasonic aspirator having a suction to probe for example a pipe-shaped crushing remove diseased, by utilizing the heat generated by ultrasonic vibration perform coagulation and cutting with, for example, scissor-like probe is an ultrasonic coagulation and incision apparatus. 超音波吸引装置の使用中においては、振動伝達部材は対象物等と接触した際に横方向の外力を受けることがあり、この場合、プローブ即ち振動伝達部材はその外周側に間隔を持って配設された同心のシースに接触してその接触部分が磨耗してしまうこととなる。 During use of the ultrasonic aspirator, the vibration transmitting member is subject to external force in the transverse direction upon contact with the object, etc. In this case, the probe i.e. the vibration transmission member with an interval in its outer periphery distribution the contact portion so that the worn away by contact with the set is concentric sheath. あるいは、超音波凝固切開装置においては、それぞれがハサミの刃の片側ずつの如き構成となる振動伝達部材と超音波振動を行わない把持部材との間に生ずる摩擦により磨耗が発生してしまう。 Alternatively, in the ultrasonic coagulation and incision apparatus, wear by friction occurring between the gripping members, each not perform ultrasonic vibration and the vibration transmitting member to be such a structure each side of the blade of the scissors is generated.

【0003】 [0003]

【発明が解決しようとする課題】この磨耗を防止する方法として、特開平5−95955号公報に、振動伝達部材の表面に表面硬化処理を行う技術が開示されている。 As a method for preventing THE INVENTION It is an object of Trying to solve this wear, in JP-A-5-95955, a technique of performing surface hardening treatment on the surface of the vibration transmitting member is disclosed.
即ち、振動伝達部材には、通常、チタン合金が用いられており、その表面にコーティングを施す場合には、イオンプレーティング等の物理蒸着(PVD法)やCVD等の化学蒸着が行われる。 That is, the vibration transmission member, usually have been used titanium alloy, when applying a coating to the surface of the physical vapor deposition or ion plating (PVD method) chemical vapor deposition of or CVD or the like is performed. しかしながら、CVDは、高温下の環境中でコーティングを行うため、母材との密着性は良好であるものの、母材の相状態に影響を及ぼすため、母材であるチタン合金の物性が変化してしまい、超音波伝達性能に影響を及ぼすことがわかっている。 However, CVD, in order to perform the coating at a high temperature in the environment, although the adhesion between the base material is good, for influencing the phase state of the base material, the physical properties of the titanium alloy as the matrix is ​​changed It would have been found to affect the ultrasonic transmission performance. 従って、実際に使用されているコーティングは、PVD法である。 Thus, coatings are actually used are PVD method. しかしながら、PVD法によるコーティングでは、コスト等を考慮すれば、実用上、膜厚が3μm程度のコーティング層としかすることができないため、例えば上述のように振動伝達部材とシースが長時間接触したような場合には、振動伝達部材にコーティングを施していてもそのコーティング部分が容易に磨耗してしまい、 However, in the coating by PVD method, considering the cost, practical, because the thickness can only with coating layer of about 3 [mu] m, for example so that the vibration transmitting member and the sheath as described above has been prolonged contact the case, even if coated to the vibration transmission member will be easily worn the coating portion,
母材が露出してしまう。 The base material will be exposed. その結果、振動伝達部材は、加えられる超音波振動による内部応力、曲げ応力により磨耗した部分に応力が集中し、その状態のままさらに超音波振動を印加し続けることでやがて疲労破壊の耐久限度に達して磨耗部分から初期亀裂が発生し、疲労破壊に至る。 As a result, the vibration transmission member, the internal stress due to ultrasonic vibration applied, the bending stress in the worn portion is concentrated by stress, the endurance limit of the eventually fatigue fracture by continuing to apply the left further ultrasonic vibration of the condition reached initial crack is generated from the wear portion, leading to fatigue failure. さらには、3μmという非常に薄いコーティング部分のビッカース硬度は約1200である一方、母材であるチタン合金のビッカース硬度は約600であり、この硬度差によって、例えば、強い衝撃が振動伝達部材のコーティング表面に加わった場合、コーティング部分は無傷であっても、母材に衝撃が加わり母材から亀裂が発生することがある。 Furthermore, one Vickers hardness of very thin coated portion of 3μm is about 1200, the Vickers hardness of the titanium alloy as the matrix is ​​about 600, the coating of this hardness difference, for example, strong impact vibration transmission member If applied to a surface, even coated portion is intact, there is a crack is generated from the parent material joined by an impact to the mother material. この場合には、コーティング層と母材との間の傷となるので超音波振動伝達時に応力が集中しやすくなり、破壊につながる初期亀裂発生の要因となる。 In this case, since the wound between the coating layer and the base material becomes stress tends to concentrate at the ultrasonic vibration transmission, causes initial cracking leading to destruction. 本発明は、上記事情に鑑みてなされたもので、耐磨耗性にすぐれ、かつ十分な強度を有する振動伝達部材を有する超音波治療装置を実現することを目的としている。 The present invention has been made in view of the above problem and an object thereof to realize an ultrasonic treatment device having a vibration transmitting member having excellent wear resistance, and a sufficient strength.

【0004】 [0004]

【課題を解決するための手段】本発明の超音波治療装置は、超音波振動子で発生される超音波振動を伝達すると共に対象部位に接触して超音波振動を印加するための振動伝達部材を備えた超音波治療装置において、前記振動伝達部材の少なくとも一部に複数層の表面加工処理層を積層して形成したことを特徴とするものである。 Ultrasonic treatment apparatus of the present invention According to an aspect of the vibration transmission member for contact with the target site applying ultrasonic vibrations while transmitting ultrasonic vibrations generated by the ultrasonic vibrator the ultrasonic treatment apparatus having a, is characterized in that formed by laminating a surface treatment layer of a plurality of layers on at least a portion of the vibration transmitting member.

【0005】 [0005]

【発明の実施の形態】以下、図面を参照して本発明の実施の形態を説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention with reference to the drawings. 図1乃至図4は本発明の第1の実施の形態に係り、図1は本発明の超音波治療装置のハンドピースの斜視図、図2はハンドピース先端部分の拡大図、図3は振動伝達部材の断面図、図4はコーティングによる応力分布の説明図である。 1 to 4 relates to the first embodiment of the present invention, FIG. 1 is a perspective view of the handpiece of the ultrasonic treatment apparatus of the present invention, FIG. 2 is an enlarged view of the handpiece tip portion, FIG 3 is oscillating sectional view of the transmission member, FIG. 4 is an explanatory view of a stress distribution by the coating.

【0006】図1のハンドピース1は、超音波振動によって発生する熱を利用して凝固切開を行うハサミ状のプローブを有する超音波凝固切開装置に用いられるものである。 [0006] The handpiece 1 of FIG. 1 is used for ultrasonic coagulation and incision apparatus having a scissors-like probe that performs coagulation and incision by utilizing the heat generated by ultrasonic vibration. ハンドピース1は、内部に超音波振動子を配設する把持部2と、この把持部2に連設されその内部に超音波振動伝達部材を配設するシース3とを有しており、把持部2の後端からは超音波振動子に電力を供給するための図示しない電源装置に接続されるケーブル4が延出している。 The handpiece 1 comprises a grip portion 2 to dispose an ultrasonic vibrator therein, has a sheath 3 which provided an ultrasonic vibration transmitting member provided continuously to the grip portion 2 therein, the gripping from the rear end parts 2 cable 4 connected to a power supply device (not shown) for supplying power to the ultrasonic vibrator is extended. 超音波振動子と振動伝達部材との間には超音波振動子で発生された超音波振動を機械的に増幅して振動伝達部材に伝達するホーンが設けられている。 Horn for transmitting the vibration transmission member mechanically amplify the ultrasonic vibration generated by the ultrasonic vibrator is provided between the vibration transmitting member and the ultrasonic transducers are provided. シース3 Sheath 3
の先端は開口しており、その内部からジョー5および振動伝達部材6がシース3の先端面から突出して設けられている。 Tip is open, the jaws 5 and vibration transmitting member 6 from the inside is provided to protrude from the distal end surface of the sheath 3. ジョー5は図2に示す回転軸7を中心として回動自在であり、回動することによって振動伝達部材6との間に患部を挟むことができる。 Jaw 5 is rotatable about an axis of rotation 7 shown in FIG. 2, it is possible to sandwich the affected part between the vibration transmitting member 6 by rotating. ジョー5は機械的にハンドル8に連結されており、ジョー5の回動動作即ちジョー5と振動伝達部材6とで構成されるハサミ状の構成の開閉操作は、把持部2に設けられたハンドル8を図中の矢印方向に動作させることによって行うことができる。 Handle jaw 5 is opened and closed mechanically is coupled to the handle 8, scissors-like configuration composed of a rotation operation i.e. jaw 5 of the jaw 5 and the vibration transmission member 6 is provided in the grip portion 2 8 can be carried out by operating in the direction of the arrow in FIG. ジョー5は、テフロン等の従順部材もしくは金属で構成される。 Jaw 5 is composed of a compliant member or a metal such as Teflon.

【0007】図3は、振動伝達部材6の断面図であり、 [0007] Figure 3 is a cross-sectional view of the vibration transmitting member 6,
振動伝達部材6の周囲にはその中心側から順にそれぞれが3μmの厚さを有する3層のコーティング11、1 Coating of three layers each in order from the center side of the periphery has a thickness of 3μm of the vibration transmission member 6 11,1
2、13が設けられている。 2, 13 is provided. コーティングを施す部分は振動伝達部材6の長手方向において少なくとも振動伝達部材6が他の部材と摺動して磨耗が発生する可能性がある部位を含み、また、シース3から突出して露出する部分をも含む。 Portion provided with a coating comprising a portion that may at least the vibration transmitting member 6 is abraded by sliding contact with another member occur in the longitudinal direction of the vibration transmitting member 6, also, the portion exposed by projecting from the sheath 3 also it is included. 超音波振動の節部を含む構成としても良く、振動伝達部材6の全長にわたってコーティングを施しても良い。 May be configured to include the section of the ultrasonic vibration may be coated over the entire length of the vibration transmitting member 6. 振動伝達部材6がジョー5と接触して発生する磨耗は、通常、5〜6μm程度となることが最も多く、一方、コーティングの厚さは単層では約3μmであるので、振動伝達部材6にコーティングを1層のみしか施さない場合には、磨耗により母材が容易に露出してしまうこととなる。 Wear vibration transmitting member 6 is produced in contact with the jaws 5, typically the most often is about 5 to 6 .mu.m, whereas, since the thickness of the coating is about 3μm a single layer, the vibration transmitting member 6 If you have not undergone only a single layer coating, so that the base material will be easily exposed by abrasion. 振動伝達部材としては、6μm以上のコーティング厚が必要であり、最も好ましいコーティング層の構成は、実験の結果から、コーティング層が3層以上であってかつ合計のコーティング膜の厚さが8μm The vibration transmitting member, is required coating thickness of at least 6 [mu] m, structure of the most preferred coating layer, the results of the experiment, the coating layer is the thickness of the coating film was in and the total three or more layers 8μm
以上である。 Or more.

【0008】図4は、図3に示す振動伝達部材6の各部位O〜Dにおける応力分布をあらわすグラフである。 [0008] Figure 4 is a graph showing stress distribution at each part O~D of the vibration transmitting member 6 shown in FIG. A
は母材とコーティング層11との境界面、Bはコーティング層11とコーティング層12との境界面、Cはコーティング層12とコーティング層13との境界面を示している。 The boundary surface between the base material and the coating layer 11, B is the boundary surface between the coating layer 11 and the coating layer 12, C represents the interface between the coating layer 12 and the coating layer 13. コスト等の実用上の要件を全く無視すれば、P If completely ignore the practical requirements of cost, and the like, P
VD法によって単層で6μm以上のコーティング層を蒸着させることは不可能ではないものの、例えば、結果として同じコーティング厚さの2種類のプローブ、即ち例えば9μmの単層からなるコーティングと本願発明の如き複数即ちそれぞれが3μmの3つの層からなる合計9 Although not impossible to deposit the coating layer more than 6μm a single layer by VD method, for example, two probes of the same coating thickness as a result, that is, for example such as 9μm coatings and the present invention composed of a single layer of multiple words total, each consisting of three layers of 3 [mu] m 9
μmの厚さのコーティングとを比較した場合には、実験を行った結果、超音波振動を印加した場合に、単層からなるコーティングを施したプローブの方が、複数の層からなるコーティングを施したプローブに比較して容易に母材からコーティングが剥がれ落ちてしまうことが確認されている。 When comparing the coating thickness of μm as a result of the experiment, when applying ultrasonic vibration, towards the probes coated consisting of a single layer, facilities a coating comprising a plurality of layers it has been confirmed that as compared to the probe would readily peel off the coating from the base material. 応力分布についてみれば、単層からなるコーティングを施したものに比較して、図4からも明らかなように、複数のコーティングを重ねたものの方が応力勾配の差を小さくできるため、各層間に発生する応力によって生ずる亀裂の発生を抑制することができる。 Come to about stress distribution, compared to those coated consisting of a single layer, as is apparent from FIG. 4, since the direction of that layer multiple coatings can reduce the difference in stress gradient, between each layer it is possible to suppress the occurrence of cracks caused by stress generated. また、コーティング層は10μm以上の厚さとすると、コーティング層自身と母材との応力勾配によって割れ易くなることが実験によって確認されている。 Further, the coating layer when the above 10μm thickness, may easily cracked due to the stress gradient between the coating layer itself and the base material has been confirmed by experiments.

【0009】次に、この実施の形態の作用を説明する。 [0009] Next, the operation of this embodiment.
ハンドピース1の振動伝達部材6を、処置を行う患者の所望の部位に当接させた後、ハンドル8を操作して、超音波振動を印加すべき組織をジョー5との間に挟み込む。 The vibration transmitting member 6 of the handpiece 1, after contact with the desired region of the patient performing the procedure, by operating the handle 8 sandwich the tissue to be applied ultrasonic vibration and between the jaws 5. 図示しないスイッチ手段からの入力に対応して、超音波振動子が振動を開始し、超音波振動は振動伝達部材6に伝達される。 In response to the input from the switch means (not shown), ultrasonic transducers starts oscillating, ultrasonic vibration is transmitted to the vibration transmitting member 6. 超音波振動により生ずる摩擦熱の作用によって患者の組織に凝固切開等の所望の処置が行われる。 Desired treatment of coagulation and incision such as the patient's tissue by the action of frictional heat generated by ultrasonic vibration is performed. 振動伝達部材6には、十分な耐磨耗性と強度を有するコーティングが施されていることから、磨耗に起因する応力集中によって亀裂が発生する可能性は飛躍的に低減されており、手術中にプローブが破損する可能性を著しく低減出来て、手術の効率、安全性を向上出来る。 The vibration transmitting member 6, since it has been subjected to a coating having sufficient abrasion resistance and strength, the possibility of cracks caused by stress concentration due to wear are dramatically reduced, during surgery the probe is able to significantly reduce the possibility of damage, the efficiency of the surgery, can improve the safety.

【0010】本実施の形態によれば、加工上でのコスト等の実用性の要件をクリアしながら、振動伝達部材に十分な耐磨耗性と強度を付与することが出来て、効率的で安全性の高い手術を行う超音波治療装置を実現することができる。 According to the present embodiment, while clearing the utility requirements such as cost on processing, to be able to impart sufficient wear resistance and strength to the vibration transmission member, efficient it is possible to realize an ultrasonic therapy apparatus for performing a secure operation. 衝撃等の強い外力に対しても母材に亀裂が発生することも防止できる。 A crack occurs in the base material against strong external force or impact, etc. can be prevented. また、ハンドピース自体の耐久性を高くすることができることから、装置自体の長寿命化をも達成できて、コスト面でも有利である。 Further, since it is possible to enhance the durability of the handpiece itself, also achieved a long life of the device itself, which is advantageous in cost.

【0011】なお、第1の実施の形態では、3μmのコーティングを3層重ねる構成としたが、重ねるそれぞれのコーティングの厚さは3μmに限定されるものではなく、コスト等の実用性をクリアした厚さであれば良い。 [0011] In the first embodiment, a configuration overlaying 3 [mu] m coating of three layers, the thickness of each coating overlaying is not limited to 3 [mu] m, and clears the utility costs such as it may be any thickness.
重ねる層の数も3層に限定されるものではなく4層以上であっても良いし、2層であっても一定の効果を奏するのはもちろんである。 It may be four or more layers and not the number is also limited to three layers of the layer stacking, the even two layers exhibits a certain effect, of course. なお、本願は、単層のみで形成したコーティング層に比べて、同じコーティング厚さを複数のコーティング層を重ねることにより形成した構成では、母材からのはがれ易さが飛躍的に向上するものであるが、コーティング層の数は多ければ多いほどコスト的に負担となることから、必要最小限の適正な数のコーティング層とするのは当然のことである。 Incidentally, the present application, in comparison with the coating layer formed only a single layer, in the formed configuration by stacking a plurality of coating layers of the same coating thickness, in which peeling ease from the base material is remarkably improved there, but the number of the coating layer is from the fact that the cost-burden the more, to an appropriate number coating layer of the minimum required is a matter of course.

【0012】次に、本発明の第2の実施の形態を図5を参照して説明する。 [0012] Next, a second embodiment of the present invention with reference to FIG. 第2の実施の形態は、第1の実施の形態と振動伝達部材の構成のみが相違するものである。 The second embodiment is one in which only the configuration of the first embodiment and the vibration transmission member is different.

【0013】図5の振動伝達部材16は、その先端面1 [0013] vibration transmission member 16 in FIG. 5, the front end surface 1
6dに続く外表面に第1の実施の形態と同様のコーティングを施したものであり、コーティングを施す領域に特徴を有するものである。 The outer surface subsequent to 6d are those subjected to the same coating as the first embodiment, and it has the characteristics in the area for receiving a coating. 即ち、母材に対して、まず第1 That is, for the base material, first of all
層となるコーティングを振動伝達部材16の16a、1 16a of the vibration transmitting member 16 a coating of a layer, 1
6b、16cの領域にわたって施す。 6b, applied over a region of 16c. 続いて、その上に重ねて領域16b、16cにのみ第2層となるコーティングを施す。 Subsequently, the region 16b on top thereof, a coating of the second layer only 16c is subjected. さらに続いて、その上に重ねて領域16c Further subsequently, the region 16c superimposed thereon
にのみ第3層となるコーティングを施したものである。 It was subjected to only coating the third layer.
従って、領域16aは第1層のみがコーティングされた部分、領域16bは第1層および第2層が重ねてコーティングされた部分、領域16cは第1層、第2層および第3層の3つのコーティングが重ねて施された部分となる。 Therefore, the region 16a is the portion where only the first layer is coated, region 16b is the portion where the first and second layers are coated on top, the first layer region 16c, the three second and third layers coating is overlaid decorated part. 即ち、上に重ねるコーティングの領域を順次狭くして行ったものである。 That is, that performed by sequentially narrowing the region of the coating overlaying above. この実施の形態の作用は第1の実施の形態と同じである。 The operation of this embodiment is the same as the first embodiment.

【0014】コーティングの領域を順次狭くしていったことにより、その境界となる部分がラインで示されることになる。 [0014] By coating the region began to sequentially narrowed, so that the portion to be its boundary is indicated by line. これは、コーティング作業を行う際に、コーティングを施さない部分にはマスキングを行うために必ずラインとなる部分が形成されることによるものである。 This is because when performing the coating operation, the portion not provided with a coating is by always portion to be a line in order to perform a masking is formed. 従って、各コーティング層の存在が目視によって容易に確認出来、コーティング作業のモレの発見が容易に行える他、すべてのコーティング作業が終了した後からでも各コーティング層の厚さを容易に測定することができる。 Accordingly, easily be confirmed by the presence is visually each coating layer, in addition to the discovery of leakage of coating operations can be easily, that all of the coating work is easily measure the thickness of each coating layer at a later ended it can. 必要な部分にのみ必要な厚さのコーティングを施すようにすることもできる。 It is also possible to make a coating of only the required thickness to the required parts.

【0015】次に、本発明の第3の実施の形態を図6を参照して説明する。 [0015] Next, a third embodiment of the present invention with reference to FIG. 第3の実施の形態は、第1の実施の形態と振動伝達部材の構成のみが相違するものである。 The third embodiment is one in which only the configuration of the first embodiment and the vibration transmission member is different.

【0016】図6は、振動伝達部材17の断面図であり、振動伝達部材17の周囲にはPVD法によるコーティング層19が設けられている。 [0016] Figure 6 is a cross-sectional view of the vibration transmission member 17, the periphery of the vibration transmitting member 17 coating layer 19 by the PVD method is provided. また、母材とコーティング層19との間には例えばニッケルメッキ層からなる中間層が設けられている。 The intermediate layer is provided consisting of a nickel plating layer for example between the base material and the coating layer 19. 中間層のビッカース硬度は、 Vickers hardness of the intermediate layer,
この場合、約800から1000程度が好ましい。 In this case, the order of about 800 1000 is preferred. この実施の形態の作用は第1の実施の形態と同じである。 The operation of this embodiment is the same as the first embodiment.

【0017】この実施の形態によれば、第1の実施の形態の応力分布よりもさらに緩やかな応力勾配とすることができるため、各層の間から応力集中による亀裂が発生することを、さらに効率的に抑制することが可能となり、耐久性の向上をはかることができる。 According to this embodiment, it is possible to further gradual stress gradient than the stress distribution in the first embodiment, that cracks may occur due to stress concentration from between the layers, more efficient to it becomes possible to suppress, it is possible to improve the durability.

【0018】次に、本発明の第4の実施の形態を図7を参照して説明する。 [0018] Next, a fourth embodiment of the present invention with reference to FIG. 図7は本発明の超音波治療装置を示す断面図である。 Figure 7 is a sectional view showing an ultrasonic treatment apparatus of the present invention.

【0019】図7のハンドピース21は、超音波振動によって組織を乳化、吸引して患部を破砕除去するパイプ状のプローブを有する超音波吸引装置に用いられるものである。 The handpiece 21 of FIG. 7, emulsifying the tissue by ultrasonic vibration, and is used in the ultrasonic aspirator having a pipe-like probe crushing remove diseased by suction. ハンドピース21は、内部に超音波振動子22 The handpiece 21 includes an internal ultrasonic transducer 22
を配設する把持部23と、この把持部23に連設されその内部に超音波振動伝達部材24を配設するシース25 A gripping portion 23 to dispose the sheath 25 to dispose the ultrasonic vibration transmitting member 24 is continuously provided on the grip portion 23 therein
とを有しており、把持部23の後端からは超音波振動子22に電力を供給するための図示しない電源装置に接続されるケーブル26および高周波電流を印加するためのケーブル27が延出している。 Has bets, from the rear end of the grip portion 23 is out cable 27 is extended to apply a cable 26 and a high-frequency current is connected to a power supply device (not shown) for supplying power to the ultrasonic vibrator 22 ing. 超音波振動子22と振動伝達部材24との間には超音波振動子22で発生された超音波振動を機械的に増幅して振動伝達部材24に伝達するホーン28が設けられている。 Horn 28 for transmitting the vibration transmitting member 24 to mechanically amplify the ultrasonic vibration generated by the ultrasonic vibrator 22 is provided between the vibration transmitting member 24 and the ultrasonic vibrator 22. シース25の先端は開口しており、その内部からパイプ状の振動伝達部材2 The distal end of the sheath 25 is open, the vibration transmission pipe-shaped from the inner member 2
4がシース25の先端面から突出して設けられている。 4 is provided to protrude from the distal end surface of the sheath 25.
振動伝達部材24は高周波電流をも通電可能である。 Vibration transmitting member 24 can also be a high-frequency current. 振動伝達部材24の中空部は、ホーン28および超音波振動子22に設けられた中空の吸引管路に連通しており、 Hollow portion of the vibration transmission member 24 is in communication with the suction conduit of the hollow provided in the horn 28 and ultrasonic transducer 22,
図示しない吸引源に接続された吸引チューブ29に連通している。 And it communicates with the suction tube 29 connected to a suction source (not shown). 振動伝達部材24の周囲には、図3に示したのと同様のコーティングが施されている。 Around the vibration transmitting member 24, similar coating to those shown in FIG. 3 is applied.

【0020】次に、この実施の形態の作用を説明する。 Next, a description will be given of the operation of this embodiment.
ハンドピース21の振動伝達部材24を、処置を行う患者の所望の部位に当接させた後、図示しないスイッチ手段からの入力に対応して、超音波振動子が振動を開始し、超音波振動は振動伝達部材24に伝達される。 The vibration transmitting member 24 of the handpiece 21, after contact with the desired region of the patient performing the procedure, in response to the input from the switch means (not shown), ultrasonic transducers starts vibrating, ultrasonic vibration It is transmitted to the vibration transmitting member 24. 超音波振動によって患者の組織を乳化、吸引し、患部を破砕除去する。 Emulsifying the patient's tissue by ultrasonic vibration, suction, crushed remove diseased. また、出血時には、高周波電流を印加して患部を高周波焼灼することもできる。 Also, at the time of bleeding, it may be a high-frequency cauterizing the affected area by applying a high frequency current. 振動伝達部材24には、十分な耐磨耗性と強度を有するコーティングが施されていることから、磨耗に起因する応力集中によって亀裂が発生する可能性は飛躍的に低減されており、手術中にプローブが破損する可能性を著しく低減出来て、手術の効率、安全性を向上出来る。 The vibration transmitting member 24, since it has been subjected to a coating having sufficient abrasion resistance and strength, the possibility of cracks caused by stress concentration due to wear are dramatically reduced, during surgery the probe is able to significantly reduce the possibility of damage, the efficiency of the surgery, can improve the safety.

【0021】本実施の形態によれば、加工上でのコスト等の実用性の要件をクリアしながら、振動伝達部材に十分な耐磨耗性と強度を付与することが出来て、効率的で安全性の高い手術を行う超音波治療装置を実現することができる。 According to the present embodiment, while clearing the utility requirements such as cost on processing, to be able to impart sufficient wear resistance and strength to the vibration transmission member, efficient it is possible to realize an ultrasonic therapy apparatus for performing a secure operation. 振動伝達部材24に対して治療処置の最中に、横方向の外力が加わって、振動伝達部材24とシース25が接触しても、十分な耐久性を有していることから、母材に亀裂が発生することも防止できる。 During the therapeutic treatment with respect to the vibration transmitting member 24, when an external force is applied in the transverse direction, even if the vibration transmitting member 24 and the sheath 25 are in contact, because it has a sufficient durability, the base material it is also possible to prevent a crack occurs. また、ハンドピース自体の耐久性を高くすることができることから、装置自体の長寿命化をも達成できて、コスト面でも有利である。 Further, since it is possible to enhance the durability of the handpiece itself, also achieved a long life of the device itself, which is advantageous in cost.

【0022】以上詳述したように本発明の実施態様によれば、以下のような構成を得ることができる。 According to an embodiment of [0022] the present invention as described in detail above, it is possible to obtain the following configurations. [付記項1]超音波振動子で発生される超音波振動を伝達すると共に対象部位に接触して超音波振動を印加するための振動伝達部材を備えた超音波治療装置において、 The ultrasonic treatment apparatus having a vibration transmitting member for contact with the target site applying ultrasonic vibrations while transmitting ultrasonic vibrations generated in the Additional Item 1] ultrasonic transducer,
前記振動伝達部材の少なくとも一部に複数層の表面加工処理層を積層して形成したことを特徴とする超音波治療装置。 The oscillating ultrasound therapy apparatus characterized by formed by laminating a surface treatment layer of a plurality of layers on at least a portion of the transmission member. [付記項2]前記振動伝達部材はチタン合金からなり、 [Additional Item 2] The vibration transmitting member is made of a titanium alloy,
前記表面加工処理層はPVDであることを特徴とする付記項1に記載の超音波治療装置。 Ultrasonic treatment apparatus according to item 1, wherein the surface treatment layer is PVD. [付記項3]前記表面加工処理層は3層積層されたものであり、3層積層された合計の表面加工処理層の厚さは約8μmであることを特徴とする付記項1に記載の超音波治療装置。 [Additional Item 3] The surface treatment layer has been laminated three layers, the thickness of the surface treatment layer of the total, which is three-layered laminate is according to Additional Item 1, characterized in that approximately 8μm ultrasound therapy device. [付記項4]前記表面加工処理層は振動伝達部材が超音波治療装置の他の部材と接触する可能性のある部位に形成されることを特徴とする付記項1に記載の超音波治療装置。 [Additional Item 4] The surface treatment layer is an ultrasonic treatment apparatus according to item 1, characterized in that it is formed at a site that might vibration transmission member is in contact with the other member of the ultrasonic therapeutic apparatus . [付記項5]前記表面加工処理層の面積は下層に比べ上層側が狭いことを特徴とする付記項1に記載の超音波治療装置。 [Additional Item 5] the area of ​​the surface treatment layer is an ultrasonic treatment apparatus according to item 1, wherein the narrow upper than the lower layer. [付記項6]前記表面加工処理層の面積は下層に比べ上層側が順次狭く形成されることを特徴とする付記項5に記載の超音波治療装置。 [Additional Item 6] the area of ​​the surface treatment layer is an ultrasonic treatment apparatus according to item 5, wherein the upper side than in the lower layer is formed sequentially narrowed. [付記項7]前記表面加工処理層の少なくとも表面となる最上層を除く中間層をメッキ層で形成したことを特徴とする付記項1に記載の超音波治療装置。 [Additional Item 7] ultrasonic treatment apparatus according to item 1, characterized in that the intermediate layer excluding the uppermost layer to be at least the surface of the surface treatment layer was formed in the plating layer.

【0023】 [0023]

【発明の効果】以上説明したように本発明によれば、加工上でのコスト等の実用性の要件をクリアしながら、振動伝達部材に十分な耐磨耗性と強度を付与することが出来て、効率的で安全性の高い手術を行う超音波治療装置を実現することができる。 According to the present invention as described in the foregoing, while clearing the utility requirements such as cost on the processing, it is possible to impart sufficient wear resistance and strength to the vibration transmission member Te, it is possible to realize an ultrasonic therapy apparatus for performing efficient and safe operation.

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

【図1】本発明の第1の実施の形態の超音波治療装置のハンドピースの斜視図。 Perspective view of the handpiece of the ultrasonic therapeutic apparatus according to the first embodiment of the present invention; FIG.

【図2】図1のハンドピース先端部分の拡大図。 Figure 2 is an enlarged view of the handpiece tip of FIG.

【図3】本発明の第1の実施の形態の振動伝達部材の断面図。 Sectional view of the vibration transmitting member of the first embodiment of the present invention; FIG.

【図4】本発明の第1の実施の形態のコーティングによる応力分布の説明図。 Illustration of stress distribution by the coating of the first embodiment of the present invention; FIG.

【図5】本発明の第2の実施の形態の超音波治療装置の振動伝達部材の斜視図。 Perspective view of the vibration transmitting member of the ultrasonic therapeutic apparatus according to the second embodiment of the present invention; FIG.

【図6】本発明の第3の実施の形態の超音波治療装置の振動伝達部材の断面図。 Sectional view of the vibration transmitting member of the third embodiment of the ultrasonic treatment apparatus of the present invention; FIG.

【図7】本発明の第4の実施の形態の超音波治療装置のハンドピースの断面図。 7 is a cross-sectional view of the handpiece of the ultrasonic therapeutic apparatus according to the fourth embodiment of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1,21 ハンドピース 3,25 シース 6,16,17,24 振動伝達部材 1,21 handpiece 3,25 sheath 6,16,17,24 vibration transmitting member

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】超音波振動子で発生される超音波振動を伝達すると共に対象部位に接触して超音波振動を印加するための振動伝達部材を備えた超音波治療装置において、 1. A ultrasonic treatment apparatus having a vibration transmitting member for contact with the target site applying ultrasonic vibrations while transmitting ultrasonic vibrations generated by the ultrasonic vibrator,
    前記振動伝達部材の少なくとも一部に複数層の表面加工処理層を積層して形成したことを特徴とする超音波治療装置。 The oscillating ultrasound therapy apparatus characterized by formed by laminating a surface treatment layer of a plurality of layers on at least a portion of the transmission member.
JP9295070A 1997-10-28 1997-10-28 Ultrasonic therapy device Pending JPH11128238A (en)

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JP9295070A JPH11128238A (en) 1997-10-28 1997-10-28 Ultrasonic therapy device
US09/170,266 US6129735A (en) 1996-06-21 1998-10-13 Ultrasonic treatment appliance
US09/563,264 US6887252B1 (en) 1996-06-21 2000-05-01 Ultrasonic treatment appliance

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