JP2004261360A - Intracoelomic observation device - Google Patents

Intracoelomic observation device Download PDF

Info

Publication number
JP2004261360A
JP2004261360A JP2003054535A JP2003054535A JP2004261360A JP 2004261360 A JP2004261360 A JP 2004261360A JP 2003054535 A JP2003054535 A JP 2003054535A JP 2003054535 A JP2003054535 A JP 2003054535A JP 2004261360 A JP2004261360 A JP 2004261360A
Authority
JP
Japan
Prior art keywords
ultrasonic
unit
distal end
observation device
drive motor
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
JP2003054535A
Other languages
Japanese (ja)
Inventor
Yuko Uchida
優子 内田
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.)
Olympus Corp
Original Assignee
Olympus Corp
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 Olympus Corp filed Critical Olympus Corp
Priority to JP2003054535A priority Critical patent/JP2004261360A/en
Publication of JP2004261360A publication Critical patent/JP2004261360A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intracoelomic observation device constituted so that the occurrence of an electrical trouble is prevented and an insertion part is reduced in diameter or a hard part is reduced in length and excellent in observation capacity. <P>SOLUTION: An end cap 6 formed of a material excellent in ultrasonic penetration is formed at the leading end of the leading end part 2 of the intracoelomic observation device and a unit arranging space part 7 having an ultrasonic unit 5 arranged therein is formed at the leading end part 2 of the intracoelomic observation device. The ultrasonic unit 5 is arranged in the ultrasonic space part 8 constituted of the unit arranging space part 7 and the space in the end cap 6 without arranging a watertight member shown by a broken line and the ultrasonic space part 8 is filled with insulating liquid paraffin 10 being an ultrasonic transmission medium having insulating properties so as to immerse the ultrasonic unit 5 in the insulating liquid paraffin 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、体腔内に挿入される挿入部の先端部に超音波振動子を配置した体腔内観察装置に関する。
【0002】
【従来の技術】
従来より、体腔内に挿入部を挿通させて観察を行う体腔内観察装置が知られている。この体腔内観察装置としては、挿入部の先端部に照明光を供給する照明光学系及びこの照明光学系で照らされた観察部位の光学像を撮像する観察光学系を備えた内視鏡や、この内視鏡の処置具挿通チャンネルを介して体腔内に導入され、先端部に超音波振動子を配設した超音波プローブがある。また、挿入部の先端部に前記照明光学系及び観察光学系と、超音波振動子とを配設した超音波内視鏡がある。
【0003】
前記超音波プローブや超音波内視鏡では先端部に超音波振動子を配置して、この先端部から離れた例えば操作部に配設されている駆動モータの駆動力をフレキシブルシャフト等の伝達部材を介して伝達して前記超音波振動子を回転させる構成のものや、図2に示すように先端部21内に、超音波振動子22に加え、駆動モータ23やエンコーダ24、スリップリング25等を内蔵し、前記超音波振動子22を前記駆動モータ23で直接的に回転させるように構成した超音波内視鏡20がある。
【0004】
前記超音波内視鏡20では、Oリング等の水密部材26を前記駆動モータ23の駆動軸23aの所定の位置に配置して、この水密部材26を前記駆動軸23a及び先端部透孔21aの内周面に所定の押圧力で密着させて水密な水密空間27を形成し、この水密空間27内に超音波振動子22を配置するとともに超音波伝達媒体である例えば水28を充満させて、超音波振動子22を水没状態にしていた。
【0005】
【発明が解決しようとする課題】
しかしながら、前記図2に示した超音波内視鏡では水密部材を前記駆動モータの駆動軸及び先端部透孔に所定の押圧力で密着させて前記水密空間を形成していたので、先端部透孔内の空気が水密空間内に充満されている水の中に混入して気泡を発生させる要因になるおそれがあった。
【0006】
また、何らかの理由で水密部材の水密状態に不具合が生じると、水密空間内の水が先端部透孔に漏出して、スリップリングを短絡させたり、駆動モータ或いはエンコーダに不具合を発生させるおそれがあった。
【0007】
さらに、これらの不具合の発生を防止するために、駆動モータの駆動軸及び先端部透孔の内周面に密着する水密部材の密着度を高めると、駆動軸に対して大きな抵抗が働く。すると、この抵抗に抗して駆動軸を所定トルクで回転させるために、高トルクの大型の駆動モータが必要になって、挿入部径を細径に形成することが難しかった。
【0008】
本発明は上記事情に鑑みてなされたものであり、電気的不具合の発生を防止し、挿入部径の細径化や硬質部長の短縮化を図れ、観察性能に優れた体腔内観察装置を提供することを目的にしている。
【0009】
【課題を解決するための手段】
本発明の体腔内観察装置は、体腔内に挿入される挿入部の先端部に先端キャップを備え、この先端キャップ及び先端部の内部に超音波振動子、スリップリング、エンコーダ及び駆動モータを有する超音波ユニットが配置され、前記超音波振動子が前記駆動モータによって機械的に回転されて体腔内超音波画像を得る体腔内観察装置であって、
前記超音波ユニットを構成する前記スリップリング、エンコーダ及び駆動モータを前記先端部に形成したユニット配置空間部に配置し、このユニット配置空間部及び前記先端キャップで構成される超音波空間内部に絶縁性の超音波伝達媒体を充填している。
【0010】
この構成によれば、水密部材が不要になることによって駆動軸にかかる押圧力が解消されて低トルクの駆動モータによる挿入部の細径化を図れるとともに、駆動軸を短縮させて硬質長の短縮化を図れる。また、ユニット配置空間部と先端キャップとで1つに構成される超音波空間部内に絶縁性の超音波伝達媒体を充填して超音波ユニット全体を媒体中に浸漬されたことにより、電気的な不具合の発生や気泡の元になる空気が超音波伝達媒体内に侵入することが防止されるとともに、絶縁性の超音波伝達媒体内が潤滑油として作用することによりスリップリングの信号伝達が良好に行われる。
【0011】
【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。
図1は本発明の実施形態に係る超音波内視鏡の先端部の構成を説明する図である。
【0012】
図に示すように本実施形態の体腔内観察装置は超音波内視鏡1であり、挿入部先端部(以下、先端部と略記する)2には観察光学系3及び照明光学系(不図示)を配置して内視鏡的観察を行える内視鏡観察部1aと、超音波振動子4を備えた超音波ユニット5を配置して超音波断層画像を得て超音波診断を行える超音波観察部1bとが設けられている。
【0013】
前記先端部2の先端にはポリメチルペンテンやポリエチレン、ポリエーテルブロックアミド等、超音波透過性に優れた材質で形成された先端キャップ6が設けられている。
【0014】
前記先端部2には前記超音波ユニット5が配置されるユニット配置空間部7が形成されており、このユニット配置空間部7と前記先端キャップ6のキャップ内空間とで構成される超音波空間部8に破線に示す水密部材を配置することなく前記超音波ユニット5が配置されるとともに、絶縁性を有する超音波伝達媒体である絶縁性流動パラフィン10を充填して、前記超音波ユニット5をこの絶縁性流動パラフィン10で浸漬した状態にしている。
【0015】
前記超音波ユニット5は、超音波信号を出射するとともに、超音波診断断層画像を構築するためのエコーデータを取得する超音波振動子4と、この超音波振動子4を回転させる駆動モータ11と、前記超音波振動子4の回転角を検出するエンコーダ12と、前記超音波振動子4と図示しない超音波観測装置との間の信号授受を行うスリップリング13とで主に構成されている。そして、前記駆動モータ11、エンコーダ12及びスリップリング13が手元側から順に前記ユニット配置空間部7内に配置されている。
【0016】
前記超音波振動子4は例えば円板14の一面側に固定配置されている。この円板14は、前記駆動モータ11から突出する駆動軸11aの先端部に一体的に固定されている。
【0017】
なお、前記先端キャップ6の先端面側には絶縁性流動パラフィン10を注入或いは排出するための貫通孔6aが形成されている。この貫通孔6aには着脱自在な蓋部材6bが配設されている。また、前記超音波ユニット5の基端部からは前記駆動モータ11、エンコーダ12及びスリップリング13からそれぞれ延出する図示しない信号線が挿通する信号ケーブル15が延出している。この信号ケーブル15の基端部は図示しない超音波観測装置に接続されている。
【0018】
このように、先端部に先端キャップが配置されて、この先端キャップと先端部に設けたユニット配置空間部とで構成される超音波空間部内に、絶縁性流動パラフィンに浸漬させた状態で超音波ユニットを配置することによって、超音波内視鏡から破線に示す水密部材を不要にして全長を短くした超音波ユニットを形成して超音波内視鏡の硬質部長の短縮化を図ることができる。
【0019】
また、超音波内視鏡から水密部材を不要にしたことによって、水密部材から超音波ユニットを構成する超音波振動子を回転させる駆動モータの駆動軸にかかる負荷を解消して、駆動軸を回転させるために必要なトルクが小さくなるので、このトルクの変化に伴って小型の駆動モータを配置することによって超音波内視鏡の細径化を図ることができる。
【0020】
さらに、超音波ユニットを絶縁性流動パラフィンに浸漬させたことによって、絶縁性流動パラフィン内に空気がさらに入り込んで気泡が発生することを防止することができるとともに、絶縁性流動パラフィンが潤滑材として作用してスリップリングの信号伝達性の向上を図ることができる。
【0021】
なお、本実施形態においては体腔内観察装置を超音波内視鏡として説明しているが、体腔内観察装置は超音波内視鏡に限定されるものではなく超音波プローブ等であってもよい。
【0022】
尚、本発明は、以上述べた実施形態のみに限定されるものではなく、発明の要旨を逸脱しない範囲で種々変形実施可能である。
【0023】
【発明の効果】
以上説明したように本発明によれば、電気的不具合の発生を防止し、挿入部径の細径化や硬質部長の短縮化を図れ、観察性能に優れた体腔内観察装置を提供することができる。
【図面の簡単な説明】
【図1】本発明の実施形態に係る超音波内視鏡の先端部の構成を説明する図
【図2】従来の超音波内視鏡の構成を説明する図
【符号の説明】
1…超音波内視鏡
4…超音波振動子
5…超音波ユニット
6…先端キャップ
7…ユニット配置空間部
8…超音波用空間部
10…絶縁性流動パラフィン
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an in-body-cavity observation device in which an ultrasonic vibrator is arranged at a distal end of an insertion portion to be inserted into a body cavity.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known an in-body-cavity observation apparatus that performs observation by inserting an insertion portion into a body cavity. As the in-vivo observation device, an endoscope including an illumination optical system that supplies illumination light to the distal end portion of the insertion portion and an observation optical system that captures an optical image of an observation site illuminated by the illumination optical system, There is an ultrasonic probe which is introduced into a body cavity through a treatment instrument insertion channel of the endoscope and has an ultrasonic transducer disposed at a distal end. Further, there is an ultrasonic endoscope in which the illumination optical system and the observation optical system, and an ultrasonic vibrator are disposed at the distal end of the insertion section.
[0003]
In the ultrasonic probe or the ultrasonic endoscope, an ultrasonic vibrator is arranged at a distal end portion, and a driving force of a driving motor disposed at, for example, an operation unit away from the distal end portion is transmitted to a transmission member such as a flexible shaft. 2 and the ultrasonic vibrator is rotated, and as shown in FIG. 2, a drive motor 23, an encoder 24, a slip ring 25, etc. And an ultrasonic endoscope 20 configured to directly rotate the ultrasonic vibrator 22 by the drive motor 23.
[0004]
In the ultrasonic endoscope 20, a watertight member 26 such as an O-ring is disposed at a predetermined position on a drive shaft 23a of the drive motor 23, and the watertight member 26 is connected to the drive shaft 23a and the distal end through hole 21a. A watertight watertight space 27 is formed by closely contacting the inner peripheral surface with a predetermined pressing force, and the ultrasonic vibrator 22 is arranged in the watertight space 27 and filled with, for example, water 28 as an ultrasonic transmission medium, The ultrasonic transducer 22 was submerged.
[0005]
[Problems to be solved by the invention]
However, in the ultrasonic endoscope shown in FIG. 2, the watertight member is brought into close contact with the drive shaft of the drive motor and the through hole at the distal end with a predetermined pressing force to form the watertight space. There is a possibility that the air in the holes mixes with the water filled in the watertight space and causes air bubbles.
[0006]
Further, if a problem occurs in the watertight state of the watertight member for some reason, water in the watertight space may leak to the through hole at the distal end, causing a short circuit in the slip ring or a problem in the drive motor or the encoder. Was.
[0007]
Furthermore, if the degree of adhesion of the watertight member that is in close contact with the drive shaft of the drive motor and the inner peripheral surface of the distal end through hole is increased in order to prevent the occurrence of these problems, a large resistance acts on the drive shaft. Then, in order to rotate the drive shaft with a predetermined torque against this resistance, a large drive motor with high torque is required, and it has been difficult to form the insertion portion with a small diameter.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides an in-vivo observation apparatus that can prevent occurrence of electrical trouble, can reduce the diameter of an insertion portion and shorten the length of a hard portion, and has excellent observation performance. The purpose is to.
[0009]
[Means for Solving the Problems]
The in-vivo observation device of the present invention includes a tip cap at the tip of the insertion portion inserted into the body cavity, and an ultra-sonic transducer, a slip ring, an encoder, and a drive motor inside the tip cap and the tip. A sound wave unit is disposed, wherein the ultrasonic transducer is mechanically rotated by the drive motor to obtain an intra-cavity ultrasonic image,
The slip ring, the encoder and the drive motor that constitute the ultrasonic unit are arranged in a unit arrangement space formed at the distal end, and an insulating space is provided inside the ultrasonic space formed by the unit arrangement space and the distal end cap. Of the ultrasonic transmission medium.
[0010]
According to this configuration, the pressing force applied to the drive shaft is eliminated by eliminating the need for a watertight member, thereby reducing the diameter of the insertion portion by the low-torque drive motor, and shortening the drive shaft to shorten the hard length. Can be achieved. Also, by filling an insulative ultrasonic transmission medium into an ultrasonic space constituted by a unit arrangement space and a tip cap, and immersing the entire ultrasonic unit in the medium, electrical In addition to preventing the occurrence of defects and the intrusion of air that is the source of air bubbles into the ultrasonic transmission medium, the signal transmission of the slip ring is improved by the fact that the insulating ultrasonic transmission medium acts as lubricating oil. Done.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration of a distal end portion of an ultrasonic endoscope according to an embodiment of the present invention.
[0012]
As shown in the figure, the in-vivo observation device of the present embodiment is an ultrasonic endoscope 1, and an observation optical system 3 and an illumination optical system (not shown) are provided at a distal end (hereinafter, abbreviated as a distal end) 2 of an insertion portion. ) Are arranged to perform endoscopic observation, and an ultrasonic unit 5 having an ultrasonic unit 5 having an ultrasonic transducer 4 is arranged to obtain an ultrasonic tomographic image and perform ultrasonic diagnosis. An observation unit 1b is provided.
[0013]
At the tip of the tip 2, a tip cap 6 made of a material having excellent ultrasonic permeability, such as polymethylpentene, polyethylene, or polyether block amide, is provided.
[0014]
A unit arrangement space 7 in which the ultrasonic unit 5 is arranged is formed in the tip 2, and an ultrasonic space formed by the unit arrangement space 7 and a space inside the cap of the tip cap 6. 8, the ultrasonic unit 5 is arranged without disposing the watertight member shown by the broken line, and the ultrasonic unit 5 is filled with an insulating liquid paraffin 10 which is an ultrasonic transmission medium having an insulating property. It is immersed in insulating liquid paraffin 10.
[0015]
The ultrasonic unit 5 emits an ultrasonic signal, and acquires an echo data for constructing an ultrasonic diagnostic tomographic image. An ultrasonic transducer 4 and a drive motor 11 for rotating the ultrasonic transducer 4 It mainly comprises an encoder 12 for detecting the rotation angle of the ultrasonic vibrator 4 and a slip ring 13 for transmitting and receiving signals between the ultrasonic vibrator 4 and an ultrasonic observation device (not shown). The drive motor 11, the encoder 12, and the slip ring 13 are arranged in the unit arrangement space 7 in this order from the near side.
[0016]
The ultrasonic vibrator 4 is fixedly arranged on one surface side of the disk 14, for example. The disk 14 is integrally fixed to a distal end of a drive shaft 11 a protruding from the drive motor 11.
[0017]
In addition, a through hole 6a for injecting or discharging the insulating liquid paraffin 10 is formed on the distal end surface side of the distal end cap 6. A detachable lid member 6b is provided in the through hole 6a. From the base end of the ultrasonic unit 5, a signal cable 15 through which signal lines (not shown) extending from the drive motor 11, the encoder 12, and the slip ring 13, respectively, extend. The proximal end of the signal cable 15 is connected to an ultrasonic observation device (not shown).
[0018]
In this way, the tip cap is arranged at the tip, and the ultrasonic wave is immersed in the insulating liquid paraffin in the ultrasonic space formed by the tip cap and the unit arrangement space provided at the tip. By arranging the unit, it is possible to form an ultrasonic unit having a shorter overall length without the need for a watertight member shown by a broken line from the ultrasonic endoscope and to shorten the length of the hard portion of the ultrasonic endoscope.
[0019]
In addition, by eliminating the need for a watertight member from the ultrasonic endoscope, the load on the drive shaft of the drive motor that rotates the ultrasonic vibrator constituting the ultrasonic unit from the watertight member is eliminated, and the drive shaft is rotated. Since the torque required to perform this operation is reduced, the diameter of the ultrasonic endoscope can be reduced by arranging a small drive motor in accordance with the change in the torque.
[0020]
Furthermore, by immersing the ultrasonic unit in the insulating liquid paraffin, it is possible to prevent air from further entering the insulating liquid paraffin to generate bubbles, and the insulating liquid paraffin acts as a lubricant. Thus, the signal transmission of the slip ring can be improved.
[0021]
In the present embodiment, the in-vivo observation device is described as an ultrasonic endoscope, but the in-vivo observation device is not limited to the ultrasonic endoscope, and may be an ultrasonic probe or the like. .
[0022]
It should be noted that the present invention is not limited to only the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.
[0023]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an in-vivo observation apparatus which can prevent occurrence of electrical trouble, reduce the diameter of the insertion portion and shorten the length of the hard portion, and have excellent observation performance. it can.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a distal end portion of an ultrasonic endoscope according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a conventional ultrasonic endoscope.
DESCRIPTION OF SYMBOLS 1 ... Ultrasonic endoscope 4 ... Ultrasonic transducer 5 ... Ultrasonic unit 6 ... Tip cap 7 ... Unit arrangement space part 8 ... Ultrasonic space part 10 ... Insulating liquid paraffin

Claims (1)

体腔内に挿入される挿入部の先端部に先端キャップを備え、この先端キャップ及び先端部の内部に超音波振動子、スリップリング、エンコーダ及び駆動モータを有する超音波ユニットが配置され、前記超音波振動子が前記駆動モータによって機械的に回転されて体腔内超音波画像を得る体腔内観察装置において、
前記超音波ユニットを構成する前記スリップリング、エンコーダ及び駆動モータを前記先端部に形成したユニット配置空間部に配置し、このユニット配置空間部及び前記先端キャップで構成される超音波空間内部に絶縁性の超音波伝達媒体を充填することを特徴とする体腔内観察装置。
An ultrasonic unit having an ultrasonic vibrator, a slip ring, an encoder, and a drive motor is provided inside the distal end cap and the distal end portion of the insertion portion to be inserted into the body cavity. In a body cavity observation device in which a vibrator is mechanically rotated by the drive motor to obtain a body cavity ultrasonic image,
The slip ring, the encoder and the drive motor that constitute the ultrasonic unit are arranged in a unit arrangement space formed at the distal end, and an insulating space is provided inside the ultrasonic space formed by the unit arrangement space and the distal end cap. A body cavity observation device, which is filled with an ultrasonic transmission medium.
JP2003054535A 2003-02-28 2003-02-28 Intracoelomic observation device Pending JP2004261360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003054535A JP2004261360A (en) 2003-02-28 2003-02-28 Intracoelomic observation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003054535A JP2004261360A (en) 2003-02-28 2003-02-28 Intracoelomic observation device

Publications (1)

Publication Number Publication Date
JP2004261360A true JP2004261360A (en) 2004-09-24

Family

ID=33118852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003054535A Pending JP2004261360A (en) 2003-02-28 2003-02-28 Intracoelomic observation device

Country Status (1)

Country Link
JP (1) JP2004261360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210369089A1 (en) * 2019-03-07 2021-12-02 Fujifilm Corporation Endoscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210369089A1 (en) * 2019-03-07 2021-12-02 Fujifilm Corporation Endoscope

Similar Documents

Publication Publication Date Title
JPS6329544B2 (en)
JP3409655B2 (en) Ultrasound diagnostic device inserted transendoscopically
US5980462A (en) Ultrasonic diagnostic devices and ultrasonic endoscopes
JP2004261360A (en) Intracoelomic observation device
JP2004261359A (en) Intracoelomic observation device
US20210236088A1 (en) Guide tube, ultrasound probe, ultrasound imaging system, and method of using ultrasound imaging system
JP3696000B2 (en) Ultrasonic probe
JP2006198162A (en) Ultrasonic probe
JP4363956B2 (en) Ultrasound endoscope
JP2004298561A (en) Capsule ultrasonic endoscope
JP2000296130A (en) Mechanical scan type ultrasonic probe
JP4426821B2 (en) Ultrasound endoscope
JP2602830B2 (en) Ultrasound diagnostic equipment
JP2006204617A (en) Ultrasonic probe
JP2004261358A (en) Capsule for ultrasonic diagnosis
JP3631416B2 (en) Ultrasonic probe
JPH0731769Y2 (en) Ultrasonic diagnostic equipment
JP2798749B2 (en) Ultrasonic probe
JP3721736B2 (en) Ultrasonic probe
JP3198903B2 (en) Ultrasound diagnostic equipment
JP2006141638A (en) Capsule for ultrasonography
JP2004248990A (en) Apparatus for ultrasonic diagnostic system
JP2594559B2 (en) Ultrasonic diagnostic device in body cavity
JP2001178727A (en) Ultrasonic probe
JP2005027724A (en) Ultrasonic diagnostic apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060105

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20081014

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081021

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081222

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090127

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090330

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090512

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20091006