JP2008076629A - Laser ferrule - Google Patents

Laser ferrule Download PDF

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Publication number
JP2008076629A
JP2008076629A JP2006254210A JP2006254210A JP2008076629A JP 2008076629 A JP2008076629 A JP 2008076629A JP 2006254210 A JP2006254210 A JP 2006254210A JP 2006254210 A JP2006254210 A JP 2006254210A JP 2008076629 A JP2008076629 A JP 2008076629A
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Japan
Prior art keywords
ferrule
fiber
laser
fixing
fixing bracket
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Pending
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JP2006254210A
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Japanese (ja)
Inventor
Nobuyuki Chigira
宣行 千木良
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SLT Japan Co Ltd
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SLT Japan Co Ltd
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Application filed by SLT Japan Co Ltd filed Critical SLT Japan Co Ltd
Priority to JP2006254210A priority Critical patent/JP2008076629A/en
Publication of JP2008076629A publication Critical patent/JP2008076629A/en
Pending legal-status Critical Current

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  • Mechanical Coupling Of Light Guides (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laser ferrule having structure for surely fixing the ferrule supplying a laser beam to a handpiece from a laser apparatus body and a fiber guiding the laser beam to each other. <P>SOLUTION: The fiber 1 for guiding the laser beam to a medical treatment part is fixed to an arbitrary position of the ferrule 14 by providing a rear section of the ferrule 14 installed in a light exit section of the laser apparatus body with a tapered section 12a, mounting a fixing bracket 12 having a tapered section 12a fitting to the tapered section 12a, and tightening a setscrew 13 to the ferrule 14 from behind the fixing bracket 12. As a result, the trouble, such as a burn of a light exit section during laser irradiation is eliminated, and the damage to the fiber 1 by caulking work and the like does not occur either. The loosening of the setscrew 13 and the moving of the fiber during use do not occur. By loosening the setscrew 13, the fiber 14 can be easily removed from the ferrule 14, and the repair of the fiber 1 is possible. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、医療用レーザハンドピースのレーザフェルールに関し、更に詳しくはその入光部に関するものである。   The present invention relates to a laser ferrule of a medical laser handpiece, and more particularly to a light incident portion thereof.

従来の例えば特開平5−157937(以下特許文献1と言う)に開示されているように、医療用レーザハンドピースの接続入光部は、被覆を除去した光ファイバの端部を、フェルールと呼ばれる筒状部材内部に固着することで構成されている。そのフェルールは光コネクタの外被であるナットグリッパに装着され、レーザ本体機器に接続されている。
特開平5−157937
As disclosed in, for example, Japanese Patent Application Laid-Open No. 5-157937 (hereinafter referred to as Patent Document 1), the end portion of the optical fiber from which the coating is removed is called a ferrule. It is comprised by adhering inside a cylindrical member. The ferrule is attached to a nut gripper which is an outer cover of the optical connector, and is connected to the laser main unit.
JP-A-5-157937

図4の(A)に上記特許文献1のフェルールの構造を示す。この図においてファイバ1は、フェルール4の先端部に、被覆を取り去って耐熱性接着剤Pにて固着されている。この構造はレーザ本体にフェルール4を装着してレーザ光線を照射すると、次の現象が生じる。
すなわちレーザによってファイバ入光部Fiに発生する熱で、ファイバ1を固着する耐熱性接着剤Pの許容温度以上に上昇した場合、当該接着剤Pは入光部へ融解噴出しファイバ1の端面に付着することがある。
すると、レーザ光線はその付着個所でさらに発熱し、ついにはフェルール4全体が焼けてしまう。これを防ぐために、図4の(B)のように接着剤Pを使用することなく、フェルール4の後部でファイバの被覆の上からカシメKて固着する方法もあるが、ファイバ1は極めて脆い材質である上に、横方向から金属筒Tを圧縮するカシメ方式では、ファイバ1に折れや割れなどの損傷を与え、品質が安定しないなどの欠点がある。
本発明は接着剤Pを使用することなく、あるいはカシメKすることなくファイバ1をフェルール4に固定し、前述の欠点を解決しようとするものである。
FIG. 4A shows the structure of the ferrule of Patent Document 1. In this figure, the fiber 1 is fixed to the tip of the ferrule 4 with the heat-resistant adhesive P after removing the coating. In this structure, when the ferrule 4 is attached to the laser body and the laser beam is irradiated, the following phenomenon occurs.
That is, when the heat generated by the laser at the fiber incident part Fi rises above the allowable temperature of the heat-resistant adhesive P for fixing the fiber 1, the adhesive P melts and jets to the incident part on the end face of the fiber 1. May adhere.
Then, the laser beam further generates heat at the portion where the laser beam is attached, and eventually the entire ferrule 4 is burnt. In order to prevent this, there is a method of fixing by caulking K from the top of the fiber coating at the rear part of the ferrule 4 without using the adhesive P as shown in FIG. 4B, but the fiber 1 is a very brittle material. In addition, the caulking method in which the metal tube T is compressed from the lateral direction has the disadvantage that the fiber 1 is damaged such as broken or broken, and the quality is not stable.
The present invention aims to solve the above-mentioned drawbacks by fixing the fiber 1 to the ferrule 4 without using the adhesive P or without crimping.

請求項1の発明は、レーザ光を導光するファイバ1を被覆のまま、内側のファイバ把持面を粗面化した固定用金具12と、これを固着させる固定ネジ13によってフェルールに固着させるものである。これにより接着剤を使用することなく、あるいはまたフェルール14をカシメることなく、被覆されたファイバ1をフェルール14に固着できるなどの効果がある。   According to the first aspect of the present invention, the fiber 1 that guides the laser light is covered and fixed to the ferrule by the fixing bracket 12 having a roughened inner fiber gripping surface and the fixing screw 13 for fixing the same. is there. Thus, there is an effect that the coated fiber 1 can be fixed to the ferrule 14 without using an adhesive or without caulking the ferrule 14.

請求項2の発明は、固定金具12と固定ネジ13によってファイバ1をフェルール14に固着させた場合、使用中に振動や衝撃などで固定ネジ13が緩み、フェルール14からファイバ1が抜けるのを防止するものである。これにより固定ナット11を使用して固定ネジ13に締め付けることにより、固定ネジ13が緩んでフェルール14からファイバ1が抜けるのを防止する効果がある。 According to the second aspect of the present invention, when the fiber 1 is fixed to the ferrule 14 by the fixing bracket 12 and the fixing screw 13, the fixing screw 13 is prevented from loosening due to vibration or impact during use, and the fiber 1 is prevented from coming out of the ferrule 14. To do. Thus, by tightening the fixing screw 13 using the fixing nut 11, there is an effect of preventing the fiber 1 from coming out of the ferrule 14 due to the fixing screw 13 being loosened.

(1)固定金具と、これを固着する固定ネジによって、ファイバをフェルールに固着させる構造にした。このため固定金具によりファイバをフェルールに固着させた場合、ファイバを把持する固定金具の内側把持面を波状あるいはネジ状に粗面化することにより、テフロン(登録商標)などの柔らかな材質の被覆のファイバを被覆を除去することなく、また接着剤を使用することなく、あるいはまたフェルールをカシメることなく、ファイバをフェルールに確実に固着できるなどの効果がある。
固定金具と固定ネジによって、ファイバをフェルールに固着させた場合、使用中の振動や衝撃などで固定ネジが緩み、フェルールからファイバが抜けるおそれがあるが、本発明ではファイバをフェルールに固着させた固定ネジを、固定ナットを使用して締め付けることにより、固定ネジが緩んでフェルールからファイバが抜けるのを防止する効果がある。
(1) The structure is such that the fiber is fixed to the ferrule by a fixing bracket and a fixing screw for fixing the fixing bracket. For this reason, when the fiber is fixed to the ferrule by the fixing bracket, the inner gripping surface of the fixing bracket for gripping the fiber is roughened into a wave shape or a screw shape, so that the coating of a soft material such as Teflon (registered trademark) is applied. There is an effect that the fiber can be securely fixed to the ferrule without removing the coating of the fiber, without using an adhesive, or without caulking the ferrule.
If the fiber is fixed to the ferrule with the fixing bracket and the fixing screw, the fixing screw may be loosened due to vibration or impact during use, and the fiber may come off from the ferrule. In the present invention, the fiber is fixed to the ferrule. By tightening the screw using a fixing nut, there is an effect of preventing the fiber from coming out of the ferrule by loosening the fixing screw.

以下図1ないし図2に従って本発明の一実施例を説明する。
図1はフェルールの全体を示す。図において先端部分の被覆を除去したファイバ1は、固定金具12および固定ネジ13を装着し、あらかじめ固定ナット11を取り付けたフェルール14の内部に挿入され、フェルール14の先端に位置決めされる。
An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 shows the entire ferrule. In the drawing, the fiber 1 from which the coating of the tip portion has been removed is inserted into a ferrule 14 to which a fixing fitting 12 and a fixing screw 13 are attached, and a fixing nut 11 is attached in advance, and is positioned at the tip of the ferrule 14.

固定金具12のテーパ部12aをフェルール14の後部のテーパ部14aに挿入し、後部から固定ネジ13を締め付けることにより、図3(A)に示すように、ファイバ1を把持する把持面に波状あるいはネジ状の粗面部12bを有し、テーパ部12aのスリワリ部12bを有する固定金具12が、ファイバの被覆の上からファイバ1をクサビ効果によって圧迫し、ファイバ1はフェルール14に固着される。このときのファイバ1への圧迫力は、トルクレンチの使用によって最適値に制御され、把持部は面で作用するのでファイバ自体のダメージは少ない。またネジにより固着されているので、何度でも分解や修理が可能である。
尚、上記の実施例では、ファイバを把持する把持面を波状あるいはネジ状の粗面部12bとしたが、かならずしもこれに限定されるものではなく、例えば梨地状の面等にしても良い。
By inserting the tapered portion 12a of the fixture 12 into the tapered portion 14a at the rear portion of the ferrule 14 and tightening the fixing screw 13 from the rear portion, as shown in FIG. A fixing fitting 12 having a thread-like rough surface portion 12b and a slit portion 12b of the tapered portion 12a presses the fiber 1 from above the fiber coating by the wedge effect, and the fiber 1 is fixed to the ferrule 14. The pressing force on the fiber 1 at this time is controlled to an optimum value by using a torque wrench, and the gripping part acts on the surface, so that the damage to the fiber itself is small. Moreover, since it is fixed with screws, it can be disassembled and repaired any number of times.
In the above embodiment, the gripping surface for gripping the fiber is the corrugated or screw-like rough surface portion 12b. However, the present invention is not limited to this, and may be a matte surface or the like.

そののちに、固定ナット11を逆回しして、固定ネジ13をしっかりと締め付け、使用中の振動や衝撃で固定ネジ13が緩み、ファイバ1がフェルール14から抜けることを防止する。 After that, the fixing nut 11 is turned in the reverse direction, and the fixing screw 13 is firmly tightened, and the fixing screw 13 is loosened due to vibration or impact during use, and the fiber 1 is prevented from coming off from the ferrule 14.

図2(A)は、図1に示した外側のカバーであるナットグリッパ2や取付ネジ5などを取り去り、内部のフェルール部分のみの組立て構造を示し、図2(B)は分解した状態を示している。   2 (A) shows the assembled structure of the inner ferrule part by removing the nut gripper 2 and the mounting screw 5 which are the outer covers shown in FIG. 1, and FIG. 2 (B) shows an exploded state. ing.

図2(B)で、ファイバ1は先端部分の被覆が除去され、固定金具12および固定ネジ13を装着してから、あらかじめ固定ナット11が装着されたフェルール14に挿入される。フェルール14の先端部分とファイバ1の先端の入光部Fiの位置を合わせつつ、固定金具12をフェルール14後部のテーパ部14aに挿入する。 In FIG. 2 (B), the fiber 1 is coated with the fixing bracket 12 and the fixing screw 13 after the end portion of the fiber 1 is removed, and then inserted into the ferrule 14 to which the fixing nut 11 is previously attached. The fixing fitting 12 is inserted into the tapered portion 14a at the rear of the ferrule 14 while aligning the position of the light incident portion Fi at the tip of the ferrule 14 and the tip of the fiber 1.

固定ネジ13をフェルール14のネジ部に取り付けて締め付けると、固定金具12のテーパ部12aとフェルール14のテーパ部14aとのクサビ効果で、スリワリ部12cを有する固定金具の粗面部12bは、被覆の上からファイバ1を圧迫しフェルール14に固着する。その状態で固定ナット11を逆回しして固定ネジ13に締め付けると、図2(A)の状態となる。 When the fixing screw 13 is attached to the threaded portion of the ferrule 14 and tightened, the rough surface portion 12b of the fixing bracket having the slot 12c is covered by the wedge effect of the tapered portion 12a of the fixing bracket 12 and the tapered portion 14a of the ferrule 14. The fiber 1 is pressed from above and fixed to the ferrule 14. In this state, when the fixing nut 11 is rotated in the reverse direction and tightened to the fixing screw 13, the state shown in FIG.

本発明のレーザフェルールの一実施例を示す全体の断面図である。1 is an overall cross-sectional view showing an embodiment of a laser ferrule of the present invention. (A)は、上記レーザフェルールの外被であるナットグリッパ部分を取り除いた状態の断面図を示し、(B)はその分解図である。(A) shows sectional drawing of the state which removed the nut gripper part which is the jacket of the said laser ferrule, (B) is the exploded view. (A)は、本考案の固定金具の縦断面図、(B)はその正面図であり、スリワリ部12cは二つ割りの状態を示す。(C)はスリワリ部12cが三つ割り状態の正面図である。(D)はスリワリ部12cが四つ割り状態の正面図である。(A) is a longitudinal cross-sectional view of the fixing bracket of the present invention, (B) is a front view thereof, and the slit portion 12c shows a state of being divided into two. (C) is a front view of the slit portion 12c in a tri-section state. (D) is a front view of the state where the slit portion 12c is divided into four. 従来のレーザフェルールの構造を示す断面図で、(A)はファイバ1をフェルール14に、耐熱性接着剤にて固着する方式の構成を示す断面図であり、(B)はフェルール4でファイバ1をカシメる方式の構成を示す断面図である。It is sectional drawing which shows the structure of the conventional laser ferrule, (A) is sectional drawing which shows the structure of the system of adhering the fiber 1 to the ferrule 14 with a heat resistant adhesive, (B) is the fiber 1 with the ferrule 4 It is sectional drawing which shows the structure of the caulking method.

符号の説明Explanation of symbols

1 ファイバ
2 ナットグリッパ
3 止めネジ
4 フェルール
5 Eリング
6 取付ネジ
11 固定ナット
12 固定金具
13 固定ネジ
14 フェルール
1 Fiber 2 Nut Gripper 3 Set Screw 4 Ferrule 5 E Ring 6 Mounting Screw 11 Fixing Nut 12 Fixing Bracket 13 Fixing Screw 14 Ferrule

Claims (2)

レーザ装置本体出光部に接続し、治療用のハンドピース部にレーザ光を供給するレーザ入光部であるレーザフェルールにおいて、レーザを導光するファイバの固着構造であり、ファイバを被覆のまま前記フェルール本体に固着するため、内側のファイバ把持面を粗面化した固定用金具と、これを固着させる固定ネジとを備えていることを特徴とするレーザフェルール。   A laser ferrule that is a laser incident portion that is connected to a light emitting portion of a laser device main body and supplies laser light to a treatment handpiece portion, and is a fixing structure of a fiber that guides the laser, and the ferrule remains covered with the fiber. A laser ferrule comprising: a fixing bracket whose inner fiber gripping surface is roughened, and a fixing screw for fixing the fixing member to be fixed to the main body. 前記ファイバ固定用金具と固定ネジにて、フェルール本体に固定されたファイバが、使用時の振動や衝撃による固定ネジの緩みにより抜けることを防止するための、緩み止め防止の固定ナットを備えていることを特徴とする請求項1に記載のレーザフェルール。   A locking nut is provided to prevent the fiber fixed to the ferrule body from being pulled out due to loosening of the fixing screw due to vibration or shock during use, with the fiber fixing bracket and fixing screw. The laser ferrule according to claim 1.
JP2006254210A 2006-09-20 2006-09-20 Laser ferrule Pending JP2008076629A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011056717A1 (en) * 2009-11-04 2011-05-12 Adc Telecommunications, Inc. Fiber optic ferrule assembly with transitioning insert
JP2014063127A (en) * 2012-08-30 2014-04-10 Mitsubishi Cable Ind Ltd Optical connector and optical fiber cable having the same
JP2014191202A (en) * 2013-03-27 2014-10-06 Mitsubishi Cable Ind Ltd Optical connector and optical fiber cable using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011056717A1 (en) * 2009-11-04 2011-05-12 Adc Telecommunications, Inc. Fiber optic ferrule assembly with transitioning insert
US8702320B2 (en) 2009-11-04 2014-04-22 Adc Telecommunications, Inc. Fiber optic ferrule assembly with transitioning insert
JP2014063127A (en) * 2012-08-30 2014-04-10 Mitsubishi Cable Ind Ltd Optical connector and optical fiber cable having the same
JP2014191202A (en) * 2013-03-27 2014-10-06 Mitsubishi Cable Ind Ltd Optical connector and optical fiber cable using the same

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