JP2010046269A - Motor for medical treatment - Google Patents

Motor for medical treatment Download PDF

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JP2010046269A
JP2010046269A JP2008212962A JP2008212962A JP2010046269A JP 2010046269 A JP2010046269 A JP 2010046269A JP 2008212962 A JP2008212962 A JP 2008212962A JP 2008212962 A JP2008212962 A JP 2008212962A JP 2010046269 A JP2010046269 A JP 2010046269A
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motor
treatment
handpiece
seal ring
junction
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JP5323422B2 (en
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Takayuki Nakamura
貴之 中村
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Osada Research Institute Ltd
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Osada Research Institute Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent the intrusion of dust from the side of a handpiece for medical treatment into a bearing supporting the rotor of a motor for medical treatment and motor components by blocking the space in an axial direction around a rotary shaft between the handpiece for medical treatment and the motor for medical treatment. <P>SOLUTION: The motor 100 for medical treatment comprises a motor sheath 10 having the bearing 15 for supporting the rotary shaft 11 at the end and a junction 20 connected to the motor sheath 10, the handpiece 200 for medical treatment is mounted on the junction so as to be freely inserted and removed, and the rotation of the rotary shaft 11 is transmitted to a treatment tool inside the handpiece 200 for medical treatment. A sealing ring 50 is provided in the connection part of the motor sheath 10 and the junction 20, and the sealing ring 50 seals the connection part, also blocks the space in the axial direction around the rotary shaft, and prevents the dust from the side of the handpiece 200 for medical treatment from intruding the bearing 15 and the motor components. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、各種治療用ハンドピースを着脱自在にかつ交換可能に装着する治療用モータに係り、特に、該治療用モータの回転軸を回転可能に支持するベアリング及びモータ構成部品に、前記治療用ハンドピースの治療具による治療作業によって生じる（生理食塩液等を含む）粉塵等が侵入しないようにし、ベアリングやモータ構成部品（例えば、コア等の金属部品）への生理食塩液等の侵入による腐食を防止するようにしたシールリングの配設構造に関する。   The present invention relates to a therapeutic motor on which various treatment handpieces are detachably and replaceably mounted. In particular, the bearing and motor components that rotatably support the rotation shaft of the therapeutic motor are used in the therapeutic motor. Corrosion due to penetration of physiological saline solution into bearings and motor components (for example, metal parts such as the core) to prevent dust (including physiological saline solution) generated by treatment with the handpiece treatment tool from entering. The present invention relates to an arrangement structure of a seal ring which prevents the above.

図３は、本発明が適用される治療用モータの一例を説明するための要部断面図で、図中、１００は治療用（低電圧）モータで、該治療用モータ１００はマグネット等を内蔵するモータシース１０と、該モータシース１０の先端部にボルト３１等によって着脱自在に連結されるジャンクション２０とで構成されており、この治療用モータ１００に、各種治療用ハンドピース２００が交換可能に装着され、該治療用モータ１００の回転が該治療用ハンドピース２００内の治療具に伝達されるようになっている。   FIG. 3 is a cross-sectional view of an essential part for explaining an example of a therapeutic motor to which the present invention is applied. In the figure, 100 is a therapeutic (low voltage) motor, and the therapeutic motor 100 has a built-in magnet or the like. Motor sheath 10 and a junction 20 that is detachably connected to the distal end of the motor sheath 10 with a bolt 31 or the like. Various treatment handpieces 200 are attached to the treatment motor 100 in a replaceable manner. The rotation of the treatment motor 100 is transmitted to the treatment tool in the treatment handpiece 200.

更に詳細に説明すると、図３において、１１はモータの回転軸、１２はモータのロータを構成する永久磁石、１３はモータのステータを構成するコイル、１４はバランサ、１５はベアリングで、周知のように、モータシース１０内には、モータの回転軸１１がベアリング１５にて回転可能に収納され、ステータコイル１３によって生成される回転磁界に従ってロータ（従って、回転軸１１）が回転するようになっている。１６はモータシース１０の先端部から突出して設けられた回転止め用の突起で、治療用モータ１００に治療用ハンドピース２００が挿着された時に、該突起１６が治療用ハンドピース２００の後端部に設けられた凹部２０１に挿入され、該治療用ハンドピース２００の治療用モータ１００に対する回転を防止する。   More specifically, in FIG. 3, 11 is a rotating shaft of the motor, 12 is a permanent magnet constituting the rotor of the motor, 13 is a coil constituting the stator of the motor, 14 is a balancer, and 15 is a bearing. In addition, in the motor sheath 10, a rotating shaft 11 of the motor is rotatably accommodated by a bearing 15, and a rotor (accordingly, the rotating shaft 11) rotates according to a rotating magnetic field generated by the stator coil 13. . Reference numeral 16 denotes a rotation-preventing protrusion provided so as to protrude from the distal end portion of the motor sheath 10. When the treatment handpiece 200 is inserted into the treatment motor 100, the protrusion 16 is the rear end portion of the treatment handpiece 200. The treatment hand piece 200 is prevented from rotating with respect to the treatment motor 100.

４１，４２は、モータの回転軸１１と治療用ハンドピース２００の回転軸２０２とを連結するための連結部材で、連結部材４１は、周知のように（図４に示すように）、一端側にモータの回転軸１１を挿入するための筒部４１1を有し、回転軸１１を径方向に横切って設けられた孔１１1と、連結部材４１に設けられた孔４１1’とを通して挿入されるピン４３によって、モータの回転軸１１と連結部材４１とが連結される。連結部材４１の反対側の軸４１2（図３参照）は、円筒の連結部材４２に挿通され、該連結部材４２に設けられたピン孔４２’（と軸４１2に設けられたピン孔４１”と）を通してピン４４が挿通され、これにより、モータの回転軸１１と連結部材４２とが連結される。 41 and 42 are connecting members for connecting the rotating shaft 11 of the motor and the rotating shaft 202 of the treatment handpiece 200. The connecting member 41 is one end side as is well known (as shown in FIG. 4). Has a cylindrical portion 41 1 for inserting the rotating shaft 11 of the motor, and is inserted through a hole 11 1 provided across the rotating shaft 11 in the radial direction and a hole 41 1 ′ provided in the connecting member 41. The rotating shaft 11 of the motor and the connecting member 41 are connected by the pin 43 to be used. The shaft 41 2 (see FIG. 3) on the opposite side of the connecting member 41 is inserted into the cylindrical connecting member 42, and the pin hole 42 ′ provided in the connecting member 42 (and the pin hole 41 provided in the shaft 41 2). ”), The pin 44 is inserted, whereby the rotating shaft 11 of the motor and the connecting member 42 are connected.

連結部材４２の先端は、２股４２2に形成されており、この２股部の間隙に、治療用ハンドピース２００側の回転軸２０２の２股の脚部２０２1が係合され（図４参照）、これにより、治療用ハンドピース２００を治療用モータ１００に差し込むだけで、治療用モータ１００側の回転軸１１と治療用ハンドピース２００側の回転軸２０２が連結される。 The distal end of the connecting member 42 is formed into a bifurcated portion 42 2 , and the bifurcated leg portion 202 1 of the rotating shaft 202 on the treatment handpiece 200 side is engaged with the gap between the bifurcated portions (FIG. 4). Thus, by simply inserting the treatment handpiece 200 into the treatment motor 100, the rotation shaft 11 on the treatment motor 100 side and the rotation shaft 202 on the treatment handpiece 200 side are connected.

治療用モータ１００の回転を治療用ハンドピース２００内の治療具（例えば、刃物）に伝達するために、モータシース１０の先端部にジャンクション２０をボルト３１等によって連結し、このジャンクション２０に治療用ハンドピース２００を挿脱可能としているが、モータシース１０とジャンクション２０の連結部の隙間を通して、外部より内部（回転軸側）に水分等が侵入する恐れがあり、そのため、これらの連結部にＯリング３０を設けている。   In order to transmit the rotation of the treatment motor 100 to a treatment tool (for example, a blade) in the treatment handpiece 200, a junction 20 is connected to the distal end portion of the motor sheath 10 with a bolt 31 or the like, and the treatment hand is connected to the junction 20. Although the piece 200 can be inserted and removed, moisture or the like may enter the inside (rotary shaft side) from the outside through the gap between the connecting portion of the motor sheath 10 and the junction 20, and therefore, the O-ring 30 is inserted into these connecting portions. Is provided.

上述のように、治療用モータ１００においては、モータシース１０とジャンクション２０との連結部にＯリング３０を設けて、外部から水分等の異物が内部に侵入しないようにしているが、回転軸１１が挿通される内部空間は治療用ハンドピース２００まで連通しており、治療作業中に、治療用ハンドピース２００側で発生した生理食塩液等を含む塵埃等が、矢印Ａにて示すように、回転軸が挿通される内部空間を通して治療用モータ１００まで達し、該治療用モータ１００に設けられているベアリング１５に達し、該ベアリング１５を腐食し、更には、モータ構成部品（例えば、コア１７等の金属部品）まで達し、これらをも腐食してしまう恐れがある。   As described above, in the therapeutic motor 100, the O-ring 30 is provided at the connecting portion between the motor sheath 10 and the junction 20 so that foreign matter such as moisture does not enter the inside from the outside. The inserted internal space communicates with the treatment handpiece 200, and dust or the like containing physiological saline solution generated on the treatment handpiece 200 side is rotated as indicated by an arrow A during the treatment operation. It reaches the therapeutic motor 100 through the internal space through which the shaft is inserted, reaches the bearing 15 provided in the therapeutic motor 100, corrodes the bearing 15, and further, motor components (for example, the core 17 and the like) Metal parts), and they may corrode.

本発明は、上述のごとき実情に鑑みてなされたもので、治療用ハンドピースの治療具に回転を与える治療用モータにおいて、モータシースとジャンクションとの連結部にシールリングを設け、該シールリングによって前記連結部をシールするとともに、該シールリングによって回転軸が挿通される内部空間を遮断し、前記治療用ハンドピースと治療用モータ間における回転軸まわりの軸方向の空間を遮断し、前記治療用モータを支えるベアリングやモータ構成部品に治療用ハンドピース側からの塵埃が侵入しないようにし、前記ベアリングやモータ構成部品の破損を防止することを目的としてなされたものである。   The present invention has been made in view of the above circumstances, and in a treatment motor that rotates a treatment tool of a treatment handpiece, a seal ring is provided at a connecting portion between a motor sheath and a junction, and the seal ring is used to The connecting portion is sealed, the internal space through which the rotating shaft is inserted is blocked by the seal ring, the axial space around the rotating shaft between the therapeutic handpiece and the therapeutic motor is blocked, and the therapeutic motor The purpose is to prevent dust from the treatment handpiece side from entering the bearing and motor components that support the bearing and to prevent damage to the bearings and motor components.

請求項１の発明は、内部にモータ構成部品を収納し、端部にモータの回転軸を支持するベアリングを有するモータシースと、該モータシースの先端部に着脱自在に連結されたジャンクションとから成り、該ジャンクションに治療用ハンドピースを挿脱自在に装着し、該治療用ハンドピース内の治療具に前記回転軸の回転を伝達するようにした治療用モータにおいて、前記モータシースと前記ジャンクションとの連結部に介装されるシールリングを有し、該シールリングは、前記連結部をシールするとともに、前記回転軸まわりの軸方向の空間を遮断することを特徴としたものである。   The invention of claim 1 comprises a motor sheath having a motor component housed therein and having a bearing for supporting a rotating shaft of the motor at an end portion thereof, and a junction detachably connected to the distal end portion of the motor sheath, In a treatment motor in which a treatment handpiece is detachably attached to a junction and the rotation of the rotation shaft is transmitted to a treatment tool in the treatment handpiece, a connection portion between the motor sheath and the junction is provided. The seal ring is interposed, and the seal ring seals the connecting portion and blocks an axial space around the rotation shaft.

請求項２の発明は、請求項１の発明において、前記シールリングの内周は前記回転軸に接触して該回転軸を挿通し、該回転軸まわりの軸方向の空間を遮断するものであることを特徴としたものである。   According to a second aspect of the present invention, in the first aspect of the invention, the inner periphery of the seal ring is in contact with the rotating shaft and is inserted through the rotating shaft, thereby blocking an axial space around the rotating shaft. It is characterized by that.

請求項３の発明は、請求項２の発明において、前記シールリングの内周面は、軸方向に幅広であることを特徴としたものである。   According to a third aspect of the present invention, in the second aspect of the present invention, the inner peripheral surface of the seal ring is wide in the axial direction.

請求項４の発明は、請求項３の発明において、前記シールリングの内周面は、前記回転軸の軸方向先端側で前記回転軸に接触するものであることを特徴としたものである。   According to a fourth aspect of the present invention, in the third aspect of the present invention, the inner peripheral surface of the seal ring is in contact with the rotary shaft on the tip end side in the axial direction of the rotary shaft.

治療用ハンドピースの治療具に回転を与える治療用モータにおいて、モータシースとジャンクションとの連結部にシールリングを設け、該シールリングによって前記連結部をシールするとともに、該シールリングによって回転軸が挿通される内部空間を遮断し、前記治療用ハンドピースと治療用モータとの間における回転軸まわりの軸方向の空間を遮断し、前記治療用モータのベアリングやモータ構成部品に治療用ハンドピース側からの塵埃が侵入しないようにしたので、前記ベアリングやモータ構成部品の破損や腐食を防止することができる。   In a treatment motor for rotating a treatment tool of a treatment handpiece, a seal ring is provided at a connection portion between a motor sheath and a junction, the connection portion is sealed by the seal ring, and a rotation shaft is inserted by the seal ring. And the axial space around the rotation axis between the treatment handpiece and the treatment motor is cut off from the treatment handpiece side to the bearings and motor components of the treatment motor. Since dust is prevented from entering, damage and corrosion of the bearings and motor components can be prevented.

図１は、本発明の一実施例を説明するための要部構成図で、図３のＩ部に相当する部分を拡大して示す断面図（ただし、治療用モータ１００に治療用ハンドピース２００が装着された状態）で、図３に示した従来技術とは、従来技術におけるＯリング３０に代わって、シールリング５０を用いている点で異なっており、その他は同じであるので、以下、シールリング５０について説明し、その他についての説明は省略する。   FIG. 1 is a main part configuration diagram for explaining an embodiment of the present invention, and is an enlarged cross-sectional view showing a part corresponding to part I of FIG. 3 (however, a therapeutic handpiece 200 is added to a therapeutic motor 100). 3 is different from the prior art shown in FIG. 3 in that a seal ring 50 is used instead of the O-ring 30 in the prior art, and the others are the same. The seal ring 50 will be described and description of the other will be omitted.

本発明におけるシールリング５０は、図１に示すように、モータシース１０とジャンクション２０の間に介装されて、これらモータシース１０とジャンクション２０の連結部をシールするシール部５０1と、治療用ハンドピース２００側の回転軸２０２が挿通される軸方向の空間と治療用モータ１００側の回転軸１１が挿通される軸方向の空間とを遮断するシール部５０2と、回転軸と接触して、該回転軸とシールリング５０との間をシールするシール部５０3とよりなり、該シールリング５０が、図１に示したように、モータシース１０とジャンクション２０との間に介装され、シール部５０1がボルト３１によって連結締め付けられ、これらモータシース１０とジャンクション２０との連結部をシール（図３に示した従来技術におけるＯリング３０と同じ作用）し、同時に、シール部５０2によって回転軸まわりの軸方向の空間をシールし、更に、シール部５０3によって回転軸とシールリング５０との接触部をシールしている。 The seal ring 50 in the present invention, as shown in FIG. 1, is interposed between the Motashisu 10 and junction 20, the sealing portion 50 1 for sealing the connection of these Motashisu 10 and junction 20, the treatment handpiece a seal portion 50 2 for blocking an axial space rotation shaft 11 in the axial space therapeutic motor 100 side is inserted to the 200 side rotary shaft 202 is inserted, in contact with the rotary shaft, the between the rotary shaft and the seal ring 50 becomes more seal portion 50 3 to seal, the seal ring 50 is, as shown in FIG. 1, is interposed between the Motashisu 10 and junction 20, the sealing portion 50 1 is tightened connected by bolts 31, O Li in the prior art of a connection portion between these Motashisu 10 and junction 20 in the seal (Fig. 3 The same effect) and grayed 30, at the same time, seals the axial direction in the space around the rotating shaft by the seal portion 50 2, further sealing the contact portion with the rotating shaft and the seal ring 50 by the seal portion 50 3.

シールリング５０の内径部に形成されるシール部５０3は、回転軸方向に幅広に形成して回転軸との接触長を長くすることにより、シールをより確実にすることができるが、その分、回転に対する抵抗が大きくなるので、先端部側５０3’で回転軸に少し強めに接触するようにすれば、回転抵抗を少なくして、しかも、シールを確実に行うことができる。 The seal portion 50 3 formed on the inner diameter portion of the seal ring 50 can be more reliably sealed by forming it wider in the direction of the rotation axis and increasing the contact length with the rotation axis. Since the resistance to rotation is increased, if the tip end side 50 3 ′ is slightly in contact with the rotating shaft, the rotational resistance can be reduced and sealing can be performed reliably.

上述のように、本発明のシールリング部材を用いると、単に、該シールリング部材をモータシースとジャンクションの間に介装締め付けるのみで、該モータシースとジャンクションの連結部をシールできるばかりでなく、治療用ハンドピースと治療用モータを連結する回転軸の軸まわりの回転軸方向の空間をもシールすることができ、これによって、治療用ハンドピース側から治療用モータ側への軸まわり空間を通して、治療用モータ側の回転軸支持用ベアリングやモータ構成部品に達する塵埃等が阻止され、該ベアリングやモータ構成部品をこれら塵埃等から保護し、該ベアリングやモータ構成部品の損傷を防止することができる。   As described above, when the seal ring member of the present invention is used, not only can the connecting portion between the motor sheath and the junction be sealed by simply interposing and tightening the seal ring member between the motor sheath and the junction, but also for therapeutic use. The space in the direction of the rotation axis around the axis of the rotation axis connecting the handpiece and the treatment motor can also be sealed, so that the treatment can be performed through the space around the axis from the treatment handpiece side to the treatment motor side. Dust and the like that reach the motor-side rotating shaft support bearing and motor components are blocked, and the bearings and motor components can be protected from these dusts, and damage to the bearings and motor components can be prevented.

本発明による治療用モータの要部断面構成図である。It is principal part sectional block diagram of the therapeutic motor by this invention. 本発明の実施に用いるシールリング部材の一例を説明するための断面図である。It is sectional drawing for demonstrating an example of the seal ring member used for implementation of this invention. 本発明が適用される従来の治療用モータの例を説明するための要部断面構成図である。It is principal part sectional block diagram for demonstrating the example of the conventional therapeutic motor to which this invention is applied. 回転軸連結溝の詳細を示す斜視図である。It is a perspective view which shows the detail of a rotating shaft connection groove | channel.

符号の説明Explanation of symbols

１０…モータシース、１１…回転軸、１２…モータのロータ、１３…モータのステータコイル、１４…バランサ、１５…ベアリング、２０…ジャンクション、３０…Ｏリング、５０…シールリング、１００…治療用モータ、２００…治療用ハンドピース。 DESCRIPTION OF SYMBOLS 10 ... Motor sheath, 11 ... Rotary shaft, 12 ... Motor rotor, 13 ... Motor stator coil, 14 ... Balancer, 15 ... Bearing, 20 ... Junction, 30 ... O-ring, 50 ... Seal ring, 100 ... Treatment motor, 200 ... Handpiece for treatment.

Claims (4)

内部にモータ構成部品を収納し、端部にモータの回転軸を支持するベアリングを有するモータシースと、該モータシースの先端部に着脱自在に連結されたジャンクションとから成り、該ジャンクションに治療用ハンドピースを挿脱自在に装着し、該治療用ハンドピース内の治療具に前記回転軸の回転を伝達するようにした治療用モータにおいて、
前記モータシースと前記ジャンクションとの連結部に介装されるシールリングを有し、該シールリングは、前記連結部をシールするとともに、前記回転軸まわりの軸方向の空間を遮断することを特徴とした治療用モータ。 It consists of a motor sheath that houses motor components inside and has a bearing that supports the rotating shaft of the motor at the end, and a junction that is detachably connected to the tip of the motor sheath, and a therapeutic handpiece is attached to the junction. In a treatment motor that is detachably mounted and transmits the rotation of the rotary shaft to a treatment tool in the treatment handpiece,
It has a seal ring interposed in a connecting portion between the motor sheath and the junction, and the seal ring seals the connecting portion and blocks an axial space around the rotating shaft. Treatment motor. 前記シールリングの内周は前記回転軸に接触して該回転軸を挿通し、該回転軸まわりの軸方向の空間を遮断するものであることを特徴とする請求項１に記載の治療用モータ。   2. The therapeutic motor according to claim 1, wherein an inner periphery of the seal ring is in contact with the rotating shaft and is inserted through the rotating shaft to block an axial space around the rotating shaft. . 前記シールリングの内周面は、軸方向に幅広であることを特徴とする請求項２に記載の治療用モータ。   The therapeutic motor according to claim 2, wherein an inner peripheral surface of the seal ring is wide in an axial direction. 前記シールリングの内周面は、前記回転軸の軸方向先端側で前記回転軸に接触するものであることを特徴とする請求項３に記載の治療用モータ。   The therapeutic motor according to claim 3, wherein an inner peripheral surface of the seal ring is in contact with the rotary shaft on an axial front end side of the rotary shaft.
JP2008212962A 2008-08-21 2008-08-21 Therapeutic motor Expired - Fee Related JP5323422B2 (en)

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JP2012236024A (en) * 2011-05-11 2012-12-06 Kaltenbach & Voigt Gmbh Dental hand instrument having elongate handle sleeve
JP2014004374A (en) * 2012-06-26 2014-01-16 Synthes Gmbh System and apparatus for providing motor protection in power tool and method of manufacturing the same
EP3175816A1 (en) * 2013-03-04 2017-06-07 W & H Dentalwerk Bürmoos GmbH Medical, in particular dental contra-angle handpiece
CN109044482A (en) * 2018-09-25 2018-12-21 天津昊野科技有限公司 A kind of high-speed permanent magnetic synchronous motor applied to bone drill
CN112155639A (en) * 2020-10-10 2021-01-01 常州安康医疗器械有限公司 Pluggable disposable continuous titanium clamp
US11309764B2 (en) 2012-06-26 2022-04-19 DePuy Synthes Products, Inc. Systems and apparatus for providing motor protection in a power tool and method of manufacturing the same

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012236024A (en) * 2011-05-11 2012-12-06 Kaltenbach & Voigt Gmbh Dental hand instrument having elongate handle sleeve
US9351801B2 (en) 2011-05-11 2016-05-31 Kaltenbach & Voigt Gmbh Dental hand instrument having an elongate handle sleeve
JP2014004374A (en) * 2012-06-26 2014-01-16 Synthes Gmbh System and apparatus for providing motor protection in power tool and method of manufacturing the same
US10617431B2 (en) 2012-06-26 2020-04-14 DePuy Synthes Products, Inc. Systems and apparatus for providing motor protection in a power tool and method of manufacturing the same
US11309764B2 (en) 2012-06-26 2022-04-19 DePuy Synthes Products, Inc. Systems and apparatus for providing motor protection in a power tool and method of manufacturing the same
EP3175816A1 (en) * 2013-03-04 2017-06-07 W & H Dentalwerk Bürmoos GmbH Medical, in particular dental contra-angle handpiece
CN109044482A (en) * 2018-09-25 2018-12-21 天津昊野科技有限公司 A kind of high-speed permanent magnetic synchronous motor applied to bone drill
CN112155639A (en) * 2020-10-10 2021-01-01 常州安康医疗器械有限公司 Pluggable disposable continuous titanium clamp

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