JPH06327682A - Manufacture method for endoscope treatment tool - Google Patents
Manufacture method for endoscope treatment toolInfo
- Publication number
- JPH06327682A JPH06327682A JP5115477A JP11547793A JPH06327682A JP H06327682 A JPH06327682 A JP H06327682A JP 5115477 A JP5115477 A JP 5115477A JP 11547793 A JP11547793 A JP 11547793A JP H06327682 A JPH06327682 A JP H06327682A
- Authority
- JP
- Japan
- Prior art keywords
- tip
- coil pipe
- opening
- operation wire
- closing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 7
- 238000011282 treatment Methods 0.000 title claims description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000005476 soldering Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 238000005219 brazing Methods 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000001861 endoscopic biopsy Methods 0.000 description 4
- 238000001574 biopsy Methods 0.000 description 3
- 238000012277 endoscopic treatment Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、生検鉗子などのよう
な内視鏡用処置具の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a treatment instrument for an endoscope such as biopsy forceps.
【０００２】[0002]
【従来の技術】図２は従来の内視鏡用生検鉗子の先端部
分を示しており、先端カップ５１とそれを開閉するため
のリンク機構５２が取り付けられた先端本体５３から、
開閉操作ワイヤ５４が後方に引き出されている。2. Description of the Related Art FIG. 2 shows a distal end portion of a conventional endoscopic biopsy forceps, which includes a distal end cup 53 and a distal end main body 53 to which a link mechanism 52 for opening and closing the distal end cup 51 is attached.
The opening / closing operation wire 54 is pulled out rearward.
【０００３】そして、操作ワイヤ５４を進退自在に挿通
したコイルパイプ５５の先端が、先端本体５３の後端筒
状部５３ａ内に差し込まれて、両者がはんだ付け又は銀
ロー付けによって固着されていた。Then, the tip of the coil pipe 55, through which the operation wire 54 is inserted so as to be able to move forward and backward, is inserted into the rear end cylindrical portion 53a of the tip body 53, and both are fixed by soldering or silver brazing. .
【０００４】[0004]
【発明が解決しようとする課題】しかし、コイルパイプ
５５の先端には、使用時に、隣り合う巻き線間にずれを
生じさせようとする複雑な力が加わる。However, at the time of use, a complicated force is applied to the tip of the coil pipe 55 to cause a deviation between the adjacent windings.
【０００５】そのため、コイルパイプ５５の先端と先端
本体５３とをはんだ付けによって固着すると、はんだ自
体の機械的強度が小さいため、くり返しの使用によっ
て、コイルの隣り合う巻き線の間ではんだに亀裂が生じ
て、先端本体５３がコイルパイプ５５から外れてしまう
事故が発生するおそれがある。Therefore, when the tip of the coil pipe 55 and the tip body 53 are fixed by soldering, since the mechanical strength of the solder itself is small, repeated use causes cracks in the solder between adjacent windings of the coil. This may cause an accident that the tip body 53 comes off the coil pipe 55.
【０００６】また、コイルパイプ５５の先端と先端本体
５３とを銀ロー付けによって固着すると、銀ローを溶か
すためのバーナーの熱によって操作ワイヤが焼きなまさ
れて強度が低下し、使用中のワイヤ切断事故発生の原因
になる場合がある。Further, when the tip of the coil pipe 55 and the tip body 53 are fixed by silver brazing, the operating wire is annealed by the heat of the burner for melting the silver brazing and the strength is reduced, and the wire in use. It may cause a cutting accident.
【０００７】そこで本発明は、先端本体とコイルパイプ
とが強固に確実に固着されて、しかも操作ワイヤが固着
作業時の熱によって劣化しない耐久性の優れた内視鏡用
処置具の製造方法を提供することを目的とする。Therefore, the present invention provides a method for manufacturing an endoscopic treatment instrument having excellent durability, in which the distal end body and the coil pipe are firmly and firmly fixed to each other, and the operation wire is not deteriorated by heat during the fixing work. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡用処置具の製造方法は、先端開閉部
を開閉する開閉機構が取り付けられて開閉操作ワイヤが
後方に引き出された金属製の先端本体の後端部を筒状に
形成し、上記操作ワイヤを進退自在に挿通するように金
属線を巻いて形成されたコイルパイプの先端部分を、隣
り合う巻き線どうしが互いに動かないようにロー付け用
の金属ローで予め単独で固めた後、上記コイルパイプの
先端を上記先端本体の後端筒状部内に差し込んで両者を
はんだ付けによって固着させることを特徴とする。In order to achieve the above object, in the method for manufacturing a treatment instrument for an endoscope of the present invention, an opening / closing mechanism for opening / closing a distal end opening / closing portion is attached and an opening / closing operation wire is pulled out rearward. The rear end of the metal tip body is formed into a tubular shape, and the tip portion of the coil pipe formed by winding a metal wire so that the operation wire can be inserted into and retracted from the tip end portion of the coil pipe It is characterized in that it is preliminarily solidified by a brazing metal braze so as not to move with each other, and then the tip end of the coil pipe is inserted into the rear end tubular portion of the tip body to fix them by soldering.
【０００９】[0009]
【実施例】図面を参照して実施例を説明する。図１は内
視鏡用生検鉗子の先端部分を示している。ただし本発明
は生検鉗子に限らず、把持鉗子、鋏その他種々の内視鏡
用処置具の製造方法に適用することができる。Embodiments will be described with reference to the drawings. FIG. 1 shows a distal end portion of an endoscopic biopsy forceps. However, the present invention is not limited to the biopsy forceps, and can be applied to a method for manufacturing grasping forceps, scissors and other various endoscopic treatment tools.
【００１０】１は、組織片を採取するための一対の鉗子
カップであり、先端本体２の先端部分に、ピン３によっ
て回動自在にあい対向して取り付けられている。先端本
体２は、後端部２ａ側が後方に開口する筒状に形成さ
れ、それより先側の部分２ｂは、円柱状の素材を前側か
ら縦方向のスリット２ｃで左右に分割した形状に形成さ
れている。Reference numeral 1 denotes a pair of forceps cups for collecting a piece of tissue, which is rotatably and oppositely attached to a tip portion of a tip body 2 by a pin 3. The tip body 2 is formed in a tubular shape with the rear end portion 2a side opening rearward, and the front portion 2b is formed in a shape in which a columnar material is divided into left and right from a front side by a vertical slit 2c. ing.
【００１１】そして、鉗子カップ１，１を開閉動作させ
るためのリンク機構４が、スリット２ｃ内に可動に配置
されている。これら、鉗子カップ１，１、先端本体２及
びリンク機構４などは、いずれもステンレス鋼によって
形成されている。A link mechanism 4 for opening and closing the forceps cups 1, 1 is movably arranged in the slit 2c. The forceps cups 1, 1, the tip body 2, the link mechanism 4, and the like are all made of stainless steel.
【００１２】また、ステンレス鋼細線を撚って形成され
た操作ワイヤ６の先端が、リンク機構４の後端部に連結
されていて、先端本体２の中心を通って後方に引き出さ
れている。Further, the tip of the operation wire 6 formed by twisting a stainless steel thin wire is connected to the rear end of the link mechanism 4, and is pulled out rearward through the center of the tip body 2.
【００１３】また、ステンレス鋼線を全長にわたって同
じ径で細長く密着巻きして形成されたコイルパイプ７内
に、操作ワイヤ６が進退自在に挿通されている。そし
て、コイルパイプ７の先端は先端本体２の後端筒状部２
ａに連結固着され、コイルパイプの基端は図示されてい
ない操作部に連結されている。An operating wire 6 is inserted into a coil pipe 7 formed by tightly winding a stainless steel wire in the same diameter over the entire length so that the operating wire 6 can move back and forth. The tip of the coil pipe 7 is the rear end tubular portion 2 of the tip body 2.
The coil pipe is fixedly connected to a, and the base end of the coil pipe is connected to an operation unit (not shown).
【００１４】このような構成により、操作部側から操作
ワイヤ６を進退操作することにより、リンク機構４が動
作して鉗子カップ１，１が開閉する。なお、図１には、
操作ワイヤ６を先側へ押して鉗子カップ１，１を開いた
状態が図示されている。With such a structure, when the operation wire 6 is moved forward and backward from the operation portion side, the link mechanism 4 operates and the forceps cups 1, 1 are opened and closed. In addition, in FIG.
The state where the forceps cups 1, 1 are opened by pushing the operation wire 6 toward the tip side is shown.
【００１５】このような内視鏡用生検鉗子を組み立てる
際には、操作ワイヤ６を連結したリンク機構４と先端カ
ップ１，１を先端本体２に組み付けておき、その先端本
体２の後端筒状部２ａに、コイルパイプ７を連結固着す
ることになる。When assembling such an endoscopic biopsy forceps, the link mechanism 4 connecting the operation wire 6 and the tip cups 1 and 1 are assembled to the tip body 2, and the rear end of the tip body 2 is assembled. The coil pipe 7 is connected and fixed to the tubular portion 2a.
【００１６】ただし、本発明においては、その前にコイ
ルパイプ７単体の状態で、予めコイルパイプ７の先端部
分外周部に、銀ローをコーティング（プレコート８）し
ておおく。However, according to the present invention, before that, silver brazing (precoat 8) is previously coated on the outer peripheral portion of the tip end portion of the coil pipe 7 in the state of the coil pipe 7 alone.
【００１７】このプレコート８は、図１に示されるよう
に、コイルパイプ７の、先端本体２内に差し込まれる部
分から先端本体２外に露出する部分にわたって行ってお
く。その結果、この部分では、コイルパイプ７の隣り合
う巻き線どうしが、互いに移動することができないよう
に強固にロー付け固着される。As shown in FIG. 1, the precoating 8 is performed from the portion of the coil pipe 7 inserted into the tip body 2 to the portion exposed to the outside of the tip body 2. As a result, in this portion, the adjacent windings of the coil pipe 7 are firmly brazed and fixed so that they cannot move to each other.
【００１８】次いで、コイルパイプ７内に操作ワイヤ６
を通して、コイルパイプ７の先端を先端本体２の後端筒
状部２ａ内にいっぱいに差し込み、そこでコイルパイプ
７の先端と先端本体２とをはんだ付けにより固定する。Next, the operation wire 6 is placed in the coil pipe 7.
Through, the tip of the coil pipe 7 is fully inserted into the rear end cylindrical portion 2a of the tip body 2, and the tip of the coil pipe 7 and the tip body 2 are fixed there by soldering.
【００１９】このはんだ付け９は、コイルパイプ７の銀
ローのプレコート８部分と先端本体２の後端筒状部２ａ
とを固着させるように行われ、はんだゴテの温度では、
操作ワイヤ６を劣化させるような熱は加わらない。This soldering 9 is performed by the silver brazing precoat portion 8 of the coil pipe 7 and the rear end cylindrical portion 2a of the tip body 2.
It is done so as to fix and, at the temperature of the soldering iron,
The heat that deteriorates the operation wire 6 is not applied.
【００２０】なお、本発明は上記実施例に限定されるも
のではなく、例えば銀ローに代えて、真ちゅうローなど
他の金属ローを用いてもよい。The present invention is not limited to the above-mentioned embodiment, and for example, instead of the silver row, other metal rows such as brass rows may be used.
【００２１】[0021]
【発明の効果】本発明の内視鏡用処置具の製造方法によ
れば、コイルパイプの先端部分を、隣り合う巻き線どう
しがお互いに動かないように金属ローで固めるので、そ
の部分のコイルの巻き線どうしが強固にロー付け固着さ
れ、そのように固められたコイルパイプ先端を、先端本
体の後端筒状部に差し込んではんだ付けによって固着す
るので、コイルパイプ内の操作ワイヤに高熱が加わら
ず、操作ワイヤが劣化することもない。したがって、非
常に耐久性のよい内視鏡用処置具を製造することができ
る。According to the method for manufacturing an endoscopic treatment tool of the present invention, the tip portion of the coil pipe is fixed with a metal braze so that adjacent windings do not move relative to each other. The winding wires are firmly brazed and fixed, and the coil pipe tip thus hardened is inserted into the rear end cylindrical portion of the tip body and fixed by soldering, so high heat is applied to the operation wire in the coil pipe. In addition, the operating wire is not deteriorated. Therefore, it is possible to manufacture a treatment tool for an endoscope having very good durability.
【図１】本発明の実施例の内視鏡用生検鉗子の先端部分
の側面断面図である。FIG. 1 is a side sectional view of a distal end portion of an endoscopic biopsy forceps according to an embodiment of the present invention.
【図２】従来例の内視鏡用生検鉗子の先端部分の側面断
面図である。FIG. 2 is a side sectional view of a distal end portion of a conventional biopsy forceps for an endoscope.
１ 鉗子カップ ２ 先端本体 ２ａ 後端筒状部 ４ リンク機構 ６ 操作ワイヤ ７ コイルパイプ ８ 金属ローのプレコート ９ はんだ付け 1 Forceps Cup 2 Tip Body 2a Rear End Cylindrical Portion 4 Link Mechanism 6 Operation Wire 7 Coil Pipe 8 Pre-Coating of Metallic Low 9 Soldering
Claims (1)
られて開閉操作ワイヤが後方に引き出された金属製の先
端本体の後端部を筒状に形成し、 上記操作ワイヤを進退自在に挿通するように金属線を巻
いて形成されたコイルパイプの先端部分を、隣り合う巻
き線どうしが互いに動かないようにロー付け用の金属ロ
ーで予め単独で固めた後、 上記コイルパイプの先端を上記先端本体の後端筒状部内
に差し込んで両者をはんだ付けによって固着させること
を特徴とする内視鏡用処置具の製造方法。1. A rear end portion of a metallic tip body having an opening / closing mechanism for opening and closing a tip opening / closing portion attached thereto and an opening / closing operation wire pulled out rearwardly is formed into a tubular shape, and the operation wire is movably inserted thereinto. As described above, the tip portion of the coil pipe formed by winding the metal wire is preliminarily solidified by a brazing metal braze so that adjacent winding wires do not move with each other, and then the tip of the coil pipe is A method for manufacturing a treatment instrument for an endoscope, which is characterized in that the distal end body is inserted into a rear end cylindrical portion and fixed to each other by soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11547793A JP3417598B2 (en) | 1993-05-18 | 1993-05-18 | Manufacturing method of treatment tool for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11547793A JP3417598B2 (en) | 1993-05-18 | 1993-05-18 | Manufacturing method of treatment tool for endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06327682A true JPH06327682A (en) | 1994-11-29 |
| JP3417598B2 JP3417598B2 (en) | 2003-06-16 |
Family
ID=14663501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11547793A Expired - Fee Related JP3417598B2 (en) | 1993-05-18 | 1993-05-18 | Manufacturing method of treatment tool for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417598B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11529125B2 (en) | 2017-06-15 | 2022-12-20 | Koninklijke Philips N.V. | Methods and systems for processing an ultrasound image |
-
1993
- 1993-05-18 JP JP11547793A patent/JP3417598B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11529125B2 (en) | 2017-06-15 | 2022-12-20 | Koninklijke Philips N.V. | Methods and systems for processing an ultrasound image |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3417598B2 (en) | 2003-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |