JP2002186625A - Endo-therapy accessory for endoscopic - Google Patents
Endo-therapy accessory for endoscopicInfo
- Publication number
- JP2002186625A JP2002186625A JP2000387234A JP2000387234A JP2002186625A JP 2002186625 A JP2002186625 A JP 2002186625A JP 2000387234 A JP2000387234 A JP 2000387234A JP 2000387234 A JP2000387234 A JP 2000387234A JP 2002186625 A JP2002186625 A JP 2002186625A
- Authority
- JP
- Japan
- Prior art keywords
- coil pipe
- flexible sheath
- endoscope
- diameter
- wire
- 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.)
- Withdrawn
Links
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、可撓性シースとし
てコイルパイプが用いられた内視鏡用処置具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment instrument for an endoscope using a coil pipe as a flexible sheath.
【０００２】[0002]
【従来の技術】例えば内視鏡用生検鉗子等のような内視
鏡用処置具においては、ステンレス鋼線等のような弾性
線材からなる素線をほぼ一定の径で螺旋状に巻いて形成
されたコイルパイプが可撓性シースとして用いられ、そ
の内側に操作ワイヤが軸線方向に進退自在に挿通配置さ
れている。2. Description of the Related Art In a treatment tool for an endoscope such as a biopsy forceps for an endoscope, a wire made of an elastic wire such as a stainless steel wire is spirally wound with a substantially constant diameter. The formed coil pipe is used as a flexible sheath, and an operation wire is inserted and disposed inside the flexible pipe so as to be able to advance and retreat in the axial direction.
【０００３】そのようにコイルパイプにより可撓性シー
スを形成する場合、コイルパイプを単純に密着巻きした
のでは柔軟すぎて腰が弱いため使い物にならない。そこ
で一般には、コイルパイプにプレロード（外力が加わっ
ていない状態において圧縮方向に加わっている荷重、即
ち装備力量）を付与することにより、コイルパイプを硬
くして腰の強さを確保している。[0003] When a flexible sheath is formed by a coil pipe as described above, simply winding the coil pipe in close contact is too soft and stiff to use. Therefore, in general, a preload (a load applied in a compression direction in a state where no external force is applied, that is, an amount of equipment) is applied to the coil pipe, so that the coil pipe is hardened and the stiffness is secured.
【０００４】[0004]
【発明が解決しようとする課題】しかし、そのような密
着巻きのコイルパイプからなる可撓性シースは、曲がっ
たときに隣り合う素線間にできる隙間に体内汚物等が挟
まると、使用後にそれを完全に洗浄除去するのが非常に
困難であり、衛生性の確保に膨大な手間がかかってい
た。However, such a flexible sheath made of a tightly wound coil pipe, if bent inside a body between adjacent strands when it is bent, may be dislodged after use. It is very difficult to completely remove the garbage, and enormous labor has been required to ensure hygiene.
【０００５】そこで、例えば特開昭５５−８７０９号公
報等に記載されているように、コイルパイプを例えば素
線の直径と同程度の隙間をあけた粗巻きに形成すれば、
隙間の洗浄を容易に行うことができる。Therefore, as described in, for example, Japanese Patent Application Laid-Open No. 55-8709, if a coil pipe is formed into a coarse winding having a gap substantially equal to the diameter of a wire, for example,
The gap can be easily cleaned.
【０００６】しかし、そのような粗巻きのコイルパイプ
の腰の強さは、プレロードのかかっていない単純な密着
巻きのコイルパイプと大差がなくて柔らか過ぎるので、
内視鏡用処置具の可撓性シースとして用いるには実用性
がなく、実際に使用レベルに達したものはなかった。However, the stiffness of such a coarsely wound coil pipe is not much different from that of a simple tightly wound coil pipe that is not preloaded, and is too soft.
It was not practical to use it as a flexible sheath for an endoscope treatment tool, and none of them had actually reached the use level.
【０００７】そこで本発明は、可撓性シースを形成する
コイルパイプの隣り合う素線間の隙間の洗浄を容易に行
うことができ、しかも可撓性シースとして実用性のある
十分な腰の強さを得ることができる内視鏡用処置具を提
供することを目的とする。Therefore, the present invention can easily clean a gap between adjacent strands of a coil pipe forming a flexible sheath, and has sufficient stiffness which is practical as a flexible sheath. It is an object of the present invention to provide a treatment tool for an endoscope which can obtain the endoscope.
【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は、可撓性シースとして、
弾性線材からなる素線をほぼ一定の径で螺旋状に巻いて
形成されたコイルパイプが用いられた内視鏡用処置具に
おいて、可撓性シースの一部又は全部を、ピッチが素線
直径の２．５〜３．５倍の範囲の粗巻きのコイルパイプ
により形成したものである。Means for Solving the Problems In order to achieve the above-mentioned object, a treatment instrument for an endoscope according to the present invention comprises a flexible sheath,
In an endoscope treatment tool using a coil pipe formed by spirally winding a wire made of an elastic wire with a substantially constant diameter, a part or the whole of a flexible sheath is formed with a pitch of the wire diameter. It is formed by a coil pipe of a coarse winding in a range of 2.5 to 3.5 times of the above.
【０００９】[0009]
【発明の実施の形態】図面を参照して本発明の実施例を
説明する。図１は、本発明が適用された内視鏡用生検鉗
子の第１の実施例を示している。ただし、本発明は生検
鉗子以外の各種内視鏡用処置具に適用することができ
る。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of an endoscope biopsy forceps to which the present invention is applied. However, the present invention can be applied to various endoscope treatment tools other than biopsy forceps.
【００１０】図示されていない内視鏡の処置具挿通チャ
ンネルに挿脱される可撓性シース１は、例えばステンレ
ス鋼線のような弾性線材からなる一本の素線を、連続的
にほぼ一定の径で螺旋状に粗巻きしたコイルパイプによ
って形成されている。なお、可撓性シース１の外径（直
径）をＤ、素線直径をｄ、螺旋巻きピッチをｐとする。A flexible sheath 1 inserted into and removed from a treatment tool insertion channel of an endoscope (not shown) is formed by continuously forming a single wire made of an elastic wire material such as a stainless steel wire into a substantially constant shape. Formed by a coil pipe roughly spirally wound with a diameter of. The outer diameter (diameter) of the flexible sheath 1 is D, the strand diameter is d, and the spiral winding pitch is p.
【００１１】可撓性シース１内には、軸線方向に進退自
在に操作ワイヤ２（図示省略）が挿通配置されており、
可撓性シース１の基端に連結された挿入部５において操
作ワイヤ２を進退操作することにより、可撓性シース１
の先端に配置された一対の鉗子カップ３が支軸４を中心
に嘴状に開閉駆動される。An operation wire 2 (not shown) is inserted through the flexible sheath 1 so as to be able to advance and retreat in the axial direction.
By operating the operation wire 2 at the insertion portion 5 connected to the base end of the flexible sheath 1, the flexible sheath 1 is moved.
A pair of forceps cups 3 disposed at the tips of the two are driven to open and close in a beak shape around the support shaft 4.
【００１２】このように構成された内視鏡用生検鉗子の
可撓性シース１を形成する密着巻きのコイルパイプは、
全長にわたってピッチｐが素線直径ｄの３倍程度の粗巻
きに形成されている。The tightly wound coil pipe forming the flexible sheath 1 of the biopsy forceps for an endoscope thus configured is
The pitch p is formed in a coarse winding of about three times the wire diameter d over the entire length.
【００１３】このように、可撓性シース１を形成するコ
イルパイプのピッチｐを素線直径ｄの３倍程度に大きく
することにより、内視鏡用処置具の可撓性シース１とし
て適度な腰の強さを得ることができる。As described above, by increasing the pitch p of the coil pipes forming the flexible sheath 1 to about three times the wire diameter d, the flexible sheath 1 of the treatment tool for an endoscope can be moderated. The strength of the waist can be obtained.
【００１４】本発明の発明者は、コイルパイプの腰の強
さが、単純な密着巻きの場合が最小であり、粗巻きピッ
チｐを大きくするのにしたがってコイルパイプが硬くな
って、腰が強くなる特性を有することを見い出した。The inventor of the present invention has found that the strength of the stiffness of the coil pipe is minimal in the case of simple close-coil winding, and the coil pipe becomes harder as the coarse winding pitch p is increased, and the stiffness of the coil pipe increases. It has been found to have certain properties.
【００１５】次に示すのは、コイルパイプの粗巻きピッ
チｐと柔軟性との関係の測定内容とその結果であり、図
２に略示されるように、コイルパイプによって形成され
た可撓性シース１を固定部から５０ｍｍの範囲でＵ字状
に１８０°曲げ、それに必要な力を荷重計１０の目盛り
で読んだ。The following shows the measured contents of the relationship between the coarse winding pitch p and the flexibility of the coil pipe and the results. As shown in FIG. 2, a flexible sheath formed by the coil pipe is used. 1 was bent 180 ° in a U-shape within a range of 50 mm from the fixed portion, and the necessary force was read on a scale of the load cell 10.
【００１６】図３は、可撓性シース１を形成するコイル
パイプの素線直径ｄがｄ＝０．５ｍｍ、外径ＤがＤ＝
１．９ｍｍの場合の測定結果であり、図４は、ｄ＝０．
４５ｍｍ、Ｄ＝１．５ｍｍの場合の測定結果である。FIG. 3 shows that the wire diameter d of the coil pipe forming the flexible sheath 1 is d = 0.5 mm and the outer diameter D is D = D = 0.5 mm.
FIG. 4 shows a measurement result in the case of 1.9 mm, and FIG.
It is a measurement result in the case of 45 mm and D = 1.5 mm.
【００１７】いずれの場合も、粗巻きピッチｐが２．５
ｄのときの柔軟性が、通常のプレロード（６００〜７０
０ｇ）が与えられた密着巻きのコイルパイプの柔軟性と
同じであり、粗巻きピッチｐが３．５ｄを越えると、柔
軟性が不足し過ぎて可撓性シース１としての実用性が乏
しくなる。In each case, the coarse winding pitch p is 2.5
The flexibility at the time of d is the normal preload (600 to 70
0g) is the same as the flexibility of the tightly wound coil pipe given. When the coarse winding pitch p exceeds 3.5 d, the flexibility is too insufficient to be practically useful as the flexible sheath 1. .
【００１８】したがって、可撓性シース１を形成するコ
イルパイプとして、ピッチｐが素線直径ｄの２．５〜
３．５倍の範囲のものを用いることにより、内視鏡用処
置具の可撓性シース１として適切な腰の強さを得ること
ができると共に、隣り合う素線間の隙間の洗浄を確実に
行うことができる。Therefore, as the coil pipe forming the flexible sheath 1, the pitch p is set to 2.5 to the wire diameter d.
By using the one having a range of 3.5 times, it is possible to obtain an adequate waist strength as the flexible sheath 1 of the treatment tool for an endoscope, and to surely clean a gap between adjacent strands. Can be done.
【００１９】なお、本発明は上記実施例に限定されるも
のではなく、例えば図５に示されるように、可撓性シー
ス１を形成するコイルパイプの一部（例えば、汚れ易い
先端近傍部分）に上述のような粗巻き部分を形成して、
他の部分１ａはプレロードが付与された密着巻きにして
も差し支えない。The present invention is not limited to the above embodiment. For example, as shown in FIG. 5, a part of a coil pipe forming a flexible sheath 1 (for example, a portion near a tip which is easily contaminated). To form a rough winding portion as described above,
The other portion 1a may be a tightly wound with a preload.
【００２０】[0020]
【発明の効果】本発明の内視鏡用処置具によれば、可撓
性シースの一部又は全部を、ピッチが素線直径の２．５
〜３．５倍の範囲の粗巻きのコイルパイプによって形成
したことにより、可撓性シースを形成するコイルパイプ
の隣り合う素線間の隙間の洗浄を容易に行うことがで
き、しかも可撓性シースとして実用性のある十分な腰の
強さを得ることができる。According to the treatment tool for an endoscope of the present invention, a part or the whole of the flexible sheath is formed with a pitch of 2.5 times the element diameter.
Since the coil is formed by a coarsely wound coil pipe having a size of about 3.5 times, it is possible to easily clean a gap between adjacent strands of the coil pipe forming the flexible sheath, and furthermore, it is flexible. It is possible to obtain sufficient waist strength that is practical as a sheath.
【図１】本発明の第１の実施例の内視鏡用生検鉗子の側
面図である。FIG. 1 is a side view of a biopsy forceps for an endoscope according to a first embodiment of the present invention.
【図２】本発明の第１の実施例におけるコイルパイプの
柔軟性（腰の強さ）の測定方法を示す略示図である。FIG. 2 is a schematic view showing a method for measuring the flexibility (lumbar strength) of a coil pipe in the first embodiment of the present invention.
【図３】本発明の第１の実施例におけるコイルパイプの
柔軟性（腰の強さ）の測定結果を示す図表である。FIG. 3 is a table showing measurement results of flexibility (lumbar strength) of a coil pipe according to the first embodiment of the present invention.
【図４】本発明の第１の実施例におけるコイルパイプの
柔軟性（腰の強さ）の測定結果を示す図表である。FIG. 4 is a table showing measurement results of flexibility (lumbar strength) of the coil pipe in the first embodiment of the present invention.
【図５】本発明の第２の実施例の内視鏡用生検鉗子の側
面図である。FIG. 5 is a side view of a biopsy forceps for an endoscope according to a second embodiment of the present invention.
１ 可撓性シース（コイルパイプ） ｐ ピッチ ｄ 素線直径 1 Flexible sheath (coil pipe) p pitch d strand diameter
Claims (1)
線をほぼ一定の径で螺旋状に巻いて形成されたコイルパ
イプが用いられた内視鏡用処置具において、 上記可撓性シースの一部又は全部を、ピッチが素線直径
の２．５〜３．５倍の範囲の粗巻きのコイルパイプによ
り形成したことを特徴とする内視鏡用処置具。1. A treatment instrument for an endoscope, wherein a coil pipe formed by spirally winding a wire made of an elastic wire with a substantially constant diameter as a flexible sheath is used. Characterized in that a part of or the entirety is formed by a coarsely wound coil pipe having a pitch in the range of 2.5 to 3.5 times the wire diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387234A JP2002186625A (en) | 2000-12-20 | 2000-12-20 | Endo-therapy accessory for endoscopic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387234A JP2002186625A (en) | 2000-12-20 | 2000-12-20 | Endo-therapy accessory for endoscopic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002186625A true JP2002186625A (en) | 2002-07-02 |
Family
ID=18854211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000387234A Withdrawn JP2002186625A (en) | 2000-12-20 | 2000-12-20 | Endo-therapy accessory for endoscopic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002186625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007096951A1 (en) * | 2006-02-21 | 2007-08-30 | Olympus Medical Systems Corp. | Endoscope system and medical instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS487832Y1 (en) * | 1967-10-06 | 1973-02-28 | ||
| JPS62240022A (en) * | 1986-04-09 | 1987-10-20 | ウエルチ．アリン．インコ−ポレ−テツド | Biopsy water channel of endoscope |
| JPS63257535A (en) * | 1987-04-15 | 1988-10-25 | オリンパス光学工業株式会社 | Treatment jig for endoscope |
-
2000
- 2000-12-20 JP JP2000387234A patent/JP2002186625A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS487832Y1 (en) * | 1967-10-06 | 1973-02-28 | ||
| JPS62240022A (en) * | 1986-04-09 | 1987-10-20 | ウエルチ．アリン．インコ−ポレ−テツド | Biopsy water channel of endoscope |
| JPS63257535A (en) * | 1987-04-15 | 1988-10-25 | オリンパス光学工業株式会社 | Treatment jig for endoscope |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007096951A1 (en) * | 2006-02-21 | 2007-08-30 | Olympus Medical Systems Corp. | Endoscope system and medical instrument |
| JP4755243B2 (en) * | 2006-02-21 | 2011-08-24 | オリンパスメディカルシステムズ株式会社 | Endoscope system and medical instrument |
| US8075474B2 (en) | 2006-02-21 | 2011-12-13 | Olympus Medical Systems Corp. | Endoscope system and medical instrument |
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