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JP2829864B2 - Surgical cutter - Google Patents

Surgical cutter

Info

Publication number
JP2829864B2
JP2829864B2 JP1171972A JP17197289A JP2829864B2 JP 2829864 B2 JP2829864 B2 JP 2829864B2 JP 1171972 A JP1171972 A JP 1171972A JP 17197289 A JP17197289 A JP 17197289A JP 2829864 B2 JP2829864 B2 JP 2829864B2
Authority
JP
Japan
Prior art keywords
inner cylinder
cylinder
stopper
inner member
outer cylinder
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.)
Expired - Lifetime
Application number
JP1171972A
Other languages
Japanese (ja)
Other versions
JPH0337061A (en
Inventor
浩 梶山
邦広 林
嘉彦 花村
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.)
TOPUKON KK
Original Assignee
TOPUKON KK
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 TOPUKON KK filed Critical TOPUKON KK
Priority to JP1171972A priority Critical patent/JP2829864B2/en
Publication of JPH0337061A publication Critical patent/JPH0337061A/en
Priority to US07/896,923 priority patent/US5226910A/en
Application granted granted Critical
Publication of JP2829864B2 publication Critical patent/JP2829864B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Surgical Instruments (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 この発明は硝子体手術などの手術において硝子体など
を切除するのに用いる手術用カッターに関するものであ
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical cutter used for cutting off the vitreous body in an operation such as a vitreous body operation.

従来の技術 この種のカッターにおいては、外筒と内筒のすり合わ
せを良くして切味を向上させることが提案されている。
たとえば開口部をもった外筒がある角度を持って曲げら
れており、内筒はその曲がりにそって動くことによりす
り合わせを良くしている。
2. Description of the Related Art In this type of cutter, it has been proposed to improve the sharpness by improving the fit between an outer cylinder and an inner cylinder.
For example, an outer cylinder having an opening is bent at an angle, and the inner cylinder moves along the curve to improve the alignment.

別の例では内筒の先端部を外筒の内径よりもさらに大
きめにあらかじめラッパ状に開いておきそれを外筒内で
動かすことによりすり合わせを良くしている。
In another example, the front end of the inner cylinder is opened in a trumpet shape larger than the inner diameter of the outer cylinder in advance, and the inner cylinder is moved in the outer cylinder to improve the fitting.

発明が解決しようとする課題 外筒がある角度をもって曲げられそれにそって内筒を
動かしすり合わせを良くするものにおいては、外観上外
筒が曲がっているので眼球などの手術部位への出し入れ
時に入れにくかったり外筒の曲がりによって開口部がさ
らに広げられひっかかりが生じたりする場合があり危険
である。
Problems to be Solved by the Invention In the case where the outer cylinder is bent at an angle and the inner cylinder is moved along the outer cylinder to improve the fit, the outer cylinder is bent in appearance, so that it is difficult to insert and remove the eyeball or other surgical site. Otherwise, the opening may be further widened due to the bending of the outer cylinder and the snagging may occur, which is dangerous.

また、内筒先端をラッパ状に広げてすり合わせを良く
するものにおいては内筒をラッパ状に広げているので、
内筒の刃となる部分のみが線接触的にすり合わされるた
めに刃が摩耗してしまい切味向上につながらない。
In addition, since the inner cylinder is expanded in a trumpet shape when the tip of the inner cylinder is expanded in a trumpet shape to improve the fit,
Since only the blade portion of the inner cylinder is rubbed in line contact, the blade is worn and does not lead to improved sharpness.

発明の目的 この発明はカッターの切味を向上し、手術部位への出
し入れに関して安全であり、またすり合わせた時に内部
材の刃部の摩耗をおこさないカッターを提供することを
目的としている。
SUMMARY OF THE INVENTION An object of the present invention is to provide a cutter which improves the sharpness of the cutter, is safe in taking in and out of a surgical site, and does not cause wear of the blade portion of the inner member when rubbing.

発明の要旨 この発明は特許請求の範囲に記載の手術用カッターを
要旨としている。
SUMMARY OF THE INVENTION The present invention is a gist of the surgical cutter described in the claims.

課題を解決するための手段 第2図と第3図を参照する。Means for Solving the Problems Please refer to FIG. 2 and FIG.

内部材としての内筒13における先端部70は、開口部18
とかかわり合って被吸引物を切除する。先端部70は、被
吸引物4を切除するためのものである。この先端部70を
含む領域部分75は内筒13の他の部分と別に外側に広げる
ことにより外部材としての外筒12の内面に強制的に接す
るようになっている。
The distal end 70 of the inner cylinder 13 as an inner member is
The object to be aspirated is excised in connection with this. The tip portion 70 is for cutting off the object 4 to be sucked. The region 75 including the tip 70 is forcibly brought into contact with the inner surface of the outer cylinder 12 as an outer member by expanding outwardly separately from the other parts of the inner cylinder 13.

作用 先端部70を含む領域部分75は、他の部分とは異って外
筒12の内面に積極的に面接触する。そして開口部18とも
積極的にかかわり合う。
Action Unlike the other portions, the region portion 75 including the distal end portion 70 comes into surface contact with the inner surface of the outer cylinder 12 positively. And it is also positively involved with the opening 18.

実施例 第1図を参照する。EXAMPLE Referring to FIG.

[手術用カッター] 手術用カッター10は、本体11、外筒12、内筒13、裏ブ
タ14、ストッパ15、スプリング16、エアーパイプ17など
を含む。このカッター10は眼球内の被吸引物を切除する
ものである。
[Surgical Cutter] The surgical cutter 10 includes a main body 11, an outer cylinder 12, an inner cylinder 13, a back cover 14, a stopper 15, a spring 16, an air pipe 17, and the like. The cutter 10 cuts an object to be sucked in the eyeball.

[外筒と内筒] 本体11は術者が握る部分である。本体11には外筒12の
後端が固定されている。中空の外筒12の閉じた先端側に
は開口部18が形成されている。
[Outer Cylinder and Inner Cylinder] The main body 11 is a part that the operator holds. The rear end of the outer cylinder 12 is fixed to the main body 11. An opening 18 is formed on the closed distal end side of the hollow outer cylinder 12.

中空の内筒13の一部分は外筒12内に挿入されている。
内筒13の残りの部分はストッパ15と裏ブタ14を通ってい
る。内筒13はストッパ15に固定されているが、裏ブタ14
には固定されていない。内筒13の後端には吸引チューブ
20を介して真空ポンプなどを含む吸引装置21に接続され
ている。
A part of the hollow inner cylinder 13 is inserted into the outer cylinder 12.
The remaining portion of the inner cylinder 13 passes through the stopper 15 and the back cover 14. The inner cylinder 13 is fixed to the stopper 15,
Not fixed. Suction tube at the rear end of inner cylinder 13
It is connected via 20 to a suction device 21 including a vacuum pump and the like.

裏ブタ14は本体11に押え還11aで固定されている。調
整ネジ14aを調整することで、ストッパ15の位置を調整
できる。つまり、内筒の初期位置を調整できる。
The back pig 14 is fixed to the main body 11 by a holding back 11a. The position of the stopper 15 can be adjusted by adjusting the adjusting screw 14a. That is, the initial position of the inner cylinder can be adjusted.

スプリング16はストッパ15を裏ブタ14側に押してい
る。エアーパイプ17およびエアーチューブ22を介して駆
動装置23から圧縮空気パルスをストッパ15に送り、スト
ッパ15がスプリング16の力に抗して前方へ(第1図左方
向)動くことができるようになっている。圧縮空気パル
スがなくなると、スプリング16の力によりストッパ15と
ダイヤフラム26は初期位置にもどる。このようにしてス
トッパ15と内筒13の往復動を行う。このスプリング16は
Oリング押え24とストッパ15の間に配置されている。
The spring 16 pushes the stopper 15 toward the back cover 14. A compressed air pulse is sent from the driving device 23 to the stopper 15 via the air pipe 17 and the air tube 22 so that the stopper 15 can move forward (leftward in FIG. 1) against the force of the spring 16. ing. When the compressed air pulse disappears, the stopper 15 and the diaphragm 26 return to the initial position by the force of the spring 16. In this way, the stopper 15 and the inner cylinder 13 reciprocate. The spring 16 is disposed between the O-ring holder 24 and the stopper 15.

Oリング押え24はOリング25を押えている。ストッパ
15と本体11の間にはダイヤフラム26が配置してある。裏
ブタ14とストッパ15の間にそれぞれOリング27、ストッ
パ28が設けられている。
The O-ring presser 24 presses the O-ring 25. Stopper
A diaphragm 26 is arranged between the main body 11 and 15. An O-ring 27 and a stopper 28 are provided between the back cover 14 and the stopper 15, respectively.

ダイヤフラム26は圧縮空気パルスをスプリング16のあ
る室内にいかせないためのシール材である。Oリング25
はスプリング16のある室内の空気を外筒12内にいかせな
いためのシール材である。Oリング27は圧縮空気パルス
を内筒13と裏ブタ14のすき間からもらさないためのシー
ル材である。
The diaphragm 26 is a sealing material for keeping the compressed air pulse from entering the room where the spring 16 is located. O-ring 25
Is a sealing material for preventing indoor air having the spring 16 from flowing into the outer cylinder 12. The O-ring 27 is a sealing material for preventing the compressed air pulse from being received from the gap between the inner cylinder 13 and the back cover 14.

内筒13に取り付いている吸引チューブ20は吸引装置21
についており、真空ポンプ等により切除された被吸引物
を吸引する。
The suction tube 20 attached to the inner cylinder 13 is a suction device 21
, The suctioned object cut off by a vacuum pump or the like is sucked.

エアーパイプ17からの圧力によってダイヤフラム26が
スプリング16に逆らって前方に動く。同時にダイヤフラ
ム26に取り付いているストッパ15及び内筒13も前方へス
トッパ15が本体11にぶつかるまで動く。
The diaphragm 26 moves forward against the spring 16 by the pressure from the air pipe 17. At the same time, the stopper 15 and the inner cylinder 13 attached to the diaphragm 26 also move forward until the stopper 15 hits the main body 11.

外筒12の側面にある開口部18に吸引された被吸引物を
除去する。もどりはスプリング16によってストッパ15が
ストッパ28に当たるまで後方に押される。同時に内筒13
及びダイヤフラム26も後方にもどる。ストッパ28は裏ブ
タ14に取り付けられた調整ネジ14aで位置を変えること
ができ、同時に内筒13のストロークが変えられる。これ
によって往復動を行なう。
The object to be sucked sucked into the opening 18 on the side surface of the outer cylinder 12 is removed. The return is pushed backward by the spring 16 until the stopper 15 hits the stopper 28. At the same time inner cylinder 13
And the diaphragm 26 also returns to the back. The position of the stopper 28 can be changed by the adjusting screw 14a attached to the back cover 14, and at the same time, the stroke of the inner cylinder 13 can be changed. Thereby, reciprocation is performed.

第2図と第3図を参照する。 Please refer to FIG. 2 and FIG.

内筒13は先端部70を含む領域部分75を有している。こ
の領域部分75は内筒13からすり割り76,77により分けら
れており、内筒13の他の部分13aとは独立して外側に広
げることができる。すり割り76は軸方向に、すり割り77
は半径方向にそれぞれ形成されている。この領域部分75
が外筒12に挿入されるとその内面に積極的に接する。そ
して領域部分75は開口部18のエッジ部18aともかかわり
合って被吸引物4を切除する。
The inner cylinder 13 has a region portion 75 including the tip portion 70. This region 75 is divided from the inner cylinder 13 by slits 76 and 77, and can be expanded outward independently of the other portion 13a of the inner cylinder 13. Slot 76 is axial and slot 77
Are formed in the radial direction, respectively. This area part 75
When it is inserted into the outer cylinder 12, it positively contacts the inner surface thereof. Then, the region portion 75 is cut off the object to be sucked 4 in connection with the edge portion 18 a of the opening 18.

[組立] 内筒13の外径は外筒12の内径よりたとえば10%大きく
作られている。内筒13は所定の治具を用いてその外径を
強制的に小さくして外筒12の中に挿入する。
[Assembly] The outer diameter of the inner cylinder 13 is made, for example, 10% larger than the inner diameter of the outer cylinder 12. The inner cylinder 13 is inserted into the outer cylinder 12 by forcibly reducing its outer diameter using a predetermined jig.

内筒13を挿入する際に、内筒13の領域部分75が面接触
で外筒12の内面にすれる。このため刃部70のみが内面に
すれることにはならないので、挿入の際及びすり合わせ
る際に内筒13刃部分70の局部的な摩耗をおこすことはな
い。
When the inner cylinder 13 is inserted, the region 75 of the inner cylinder 13 is brought into contact with the inner surface of the outer cylinder 12 by surface contact. For this reason, since only the blade portion 70 does not rub against the inner surface, local wear of the inner cylinder 13 blade portion 70 does not occur at the time of insertion and rubbing.

[操作] 次に第1図〜第3図を参照して実際に眼球内の被吸引
物4を吸引切除する様子を説明する。
[Operation] Next, referring to FIGS. 1 to 3, a description will be given of a state in which the suction target 4 in the eyeball is actually removed.

第1図の吸引装置21を作動して、第2図の被吸引物4
を開口部18内に吸引する。そして第1図の駆動装置23を
作動してストッパ15を往復動させる。
The suction device 21 shown in FIG.
Is sucked into the opening 18. Then, the drive unit 23 shown in FIG. 1 is operated to cause the stopper 15 to reciprocate.

これにより、第2図の内筒13を矢印方向に往復動させ
て開口部18に入っている被吸引物4を切除する。切除し
た被吸引物4は第1図の内筒13、吸引チューブ20を介し
て吸引装置21に送られる。
As a result, the inner cylinder 13 shown in FIG. 2 is reciprocated in the direction of the arrow, and the object to be sucked 4 entering the opening 18 is cut off. The cut object 4 is sent to the suction device 21 via the inner tube 13 and the suction tube 20 shown in FIG.

別の実施例 第4図と第5図を参照する。Another embodiment Referring to FIG. 4 and FIG.

この例では内筒130のすり割り176以外は第2図と第3
図の実施例と同様である。このすり割り176はらせん状
になっている。
In this example, except for the slot 176 of the inner cylinder 130, FIGS.
This is the same as the embodiment shown in FIG. This slot 176 is spiral.

第6図を参照する。 Please refer to FIG.

内筒230のすり割り276,277はたとえば角度αが150°
を成している。
The slot 276, 277 of the inner cylinder 230 has, for example, an angle α of 150 °.
Has formed.

第7図では、すり割りにより分けられた内筒330の領
域部分375が下側にきている。
In FIG. 7, the area portion 375 of the inner cylinder 330 divided by slitting comes down.

ところですり割りは上記実施例の態様に限らず、複数
設けてもよい。
However, the slotting is not limited to the embodiment described above, and a plurality of slots may be provided.

発明の効果 請求項1の発明によれば、内部材の先端部を含む領域
部分を広げて往復動するので内部材と外部材のすり合わ
せが良くなり切味向上につながる。
According to the first aspect of the present invention, since the region including the distal end of the inner member is reciprocated while expanding, the fitting between the inner member and the outer member is improved, leading to an improvement in sharpness.

また、手術部位へのカッターの出し入れに関しても外
部材を曲げる必要がないのでスムーズに出し入れできる
ので問題ない。
In addition, there is no need to bend the outer member when moving the cutter in and out of the surgical site, so there is no problem since the cutter can be smoothly inserted and removed.

さらに内部材と外部材がすり合わさる時外筒内面に内
部材外面が線でなく面で当たるので、刃部が摩耗するこ
とも少なくなり切味も向上する。
Furthermore, when the inner member and the outer member are rubbed, the outer surface of the inner member hits the inner surface of the outer cylinder with a surface instead of a line, so that the blade portion is less worn and the sharpness is improved.

請求項2の発明によれば、領域部分を外部材の内面に
確実に密接することができる。
According to the second aspect of the present invention, the region can be securely brought into close contact with the inner surface of the outer member.

請求項3の発明によれば、直線的なすり割りを設ける
だけでよく加工が容易であり、領域部分を外部材の内面
に確実に密接できる。
According to the third aspect of the present invention, the processing is easy only by providing a linear slit, and the region can be securely brought into close contact with the inner surface of the outer member.

【図面の簡単な説明】[Brief description of the drawings]

第1図はこの発明の手術用カッターの実施例を示す断面
図、第2図は外筒は内筒の先端部を含む部分を示す断面
図、第3図は第2図のX−Xにおける断面図、第4図は
別の実施例を示す断面図、第5図は第4図のY−Yにお
ける断面図、第6図と第7図はさらに別の実施例を示す
断面図である。 12……外部材 13……内部材 70……刃部 75……領域部分 76,77……すり割り
FIG. 1 is a sectional view showing an embodiment of the surgical cutter of the present invention, FIG. 2 is a sectional view showing a portion of the outer cylinder including the tip of the inner cylinder, and FIG. 3 is a sectional view taken along line XX of FIG. FIG. 4 is a cross-sectional view showing another embodiment. FIG. 5 is a cross-sectional view taken along line YY of FIG. 4, and FIGS. 6 and 7 are cross-sectional views showing still another embodiment. . 12 ... outer member 13 ... inner member 70 ... blade part 75 ... area part 76, 77 ... slot

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) A61F 9/007──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) A61F 9/007

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】一端が閉じている中空の外部材に内部材を
入れ、内部材を外部材に対して往復動することで外部材
の閉じている一端の近くの側面にある開口部に吸引され
た被吸引物を内部材の先端部を開口部とのかかわり合い
により切除する手術用カッターにおいて、内部材におけ
る切除用先端部を含む領域部分が、内部材の他の部分と
は別に変形され外部材の内面に強制的に接することを特
徴とする手術用カッター。
1. An inner member is inserted into a hollow outer member having one end closed, and the inner member is reciprocated with respect to the outer member so as to suck into an opening on a side surface near the closed one end of the outer member. In a surgical cutter for cutting off the suctioned object by cutting the distal end portion of the inner member into contact with the opening, a region including the cutting distal end portion of the inner member is deformed separately from other portions of the inner member, and the outer portion is deformed. A surgical cutter characterized by being forced into contact with the inner surface of the material.
【請求項2】先端部を含む領域部分がらせん状になって
いることを特徴とする請求項1に記載の手術用カッタ
ー。
2. The surgical cutter according to claim 1, wherein the region including the tip is helical.
【請求項3】内部材の軸方向と、この軸方向に垂直な方
向にすり割りを入れることにより領域部分を形成するこ
とを特徴とする請求項1に記載の手術用カッター。
3. The surgical cutter according to claim 1, wherein the area portion is formed by slitting the inner member in an axial direction and a direction perpendicular to the axial direction.
JP1171972A 1989-07-05 1989-07-05 Surgical cutter Expired - Lifetime JP2829864B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1171972A JP2829864B2 (en) 1989-07-05 1989-07-05 Surgical cutter
US07/896,923 US5226910A (en) 1989-07-05 1992-06-11 Surgical cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1171972A JP2829864B2 (en) 1989-07-05 1989-07-05 Surgical cutter

Publications (2)

Publication Number Publication Date
JPH0337061A JPH0337061A (en) 1991-02-18
JP2829864B2 true JP2829864B2 (en) 1998-12-02

Family

ID=15933162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1171972A Expired - Lifetime JP2829864B2 (en) 1989-07-05 1989-07-05 Surgical cutter

Country Status (1)

Country Link
JP (1) JP2829864B2 (en)

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