JPH065771Y2 - Surgical cutting instrument - Google Patents

Surgical cutting instrument

Info

Publication number
JPH065771Y2
JPH065771Y2 JP1988057467U JP5746788U JPH065771Y2 JP H065771 Y2 JPH065771 Y2 JP H065771Y2 JP 1988057467 U JP1988057467 U JP 1988057467U JP 5746788 U JP5746788 U JP 5746788U JP H065771 Y2 JPH065771 Y2 JP H065771Y2
Authority
JP
Japan
Prior art keywords
suction
main body
suction passage
cutting instrument
valve operating
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
JP1988057467U
Other languages
Japanese (ja)
Other versions
JPH01159825U (en
Inventor
浩二 下村
正造 渋谷
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 Optic Co Ltd
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 Optic Co Ltd filed Critical Olympus Optic Co Ltd
Priority to JP1988057467U priority Critical patent/JPH065771Y2/en
Priority to DE3906301A priority patent/DE3906301A1/en
Publication of JPH01159825U publication Critical patent/JPH01159825U/ja
Priority to US07/633,194 priority patent/US5123904A/en
Application granted granted Critical
Publication of JPH065771Y2 publication Critical patent/JPH065771Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は、切開することなく体腔外から体腔内、例えば
膝等の関節腔内の軟骨(関節半月、関節軟骨)、軟骨
癌、腫瘍等を切除し、体腔外に排出する外科用切除器具
に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is directed to the cartilage (joint meniscus, articular cartilage), cartilage cancer, tumor, etc. from outside the body cavity to inside the body cavity, for example, in the joint cavity of the knee or the like without making an incision. The present invention relates to a surgical cutting instrument that excises a bone and discharges it outside the body cavity.

[従来の技術と考案が解決しようとする課題] 従来、関節手術は、主として切開法(開放外科)によっ
て行なわれていた。例えば、一般的な関節の手術におい
ては、膝蓋骨上の腫瘍を切除したり、膝関節から破損し
た軟骨、骨等を切除すること等であるが、これらの手術
は、比較的大きな切開を必要としていた。このため、切
開による外傷を生じ、苦痛と運動制限とを伴い、完治ま
でに多くの時間を要するという欠点を有していた。
[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, joint surgery has been performed mainly by an incision method (open surgery). For example, in general joint surgery, tumors on the patella are removed, and damaged cartilage, bone, etc. are removed from the knee joint, but these operations require a relatively large incision. I was there. For this reason, there is a drawback in that trauma due to incision is caused, pain and movement limitation are involved, and it takes a long time to completely recover.

そこで近年、関節鏡(内視鏡)の観察のもとで、関節を
切開しないで、この関節に小さな穿刺孔を形成し、この
穿刺孔に挿入部を挿入して手術する外科用切除器具が種
々提案されている。この外科用切除器具の挿入部先端で
切除した組織を吸引する場合は、例えば、米国特許US
P4203444の如く、切除器具本体の側面に接続さ
れた吸引量調節弁を操作するもの、あるいは、第8図に
示されるように、外科用切除器具100の挿入部300
の先端で切除した組織を吸引する場合、本体200の前
方に設けられた回転式のコックからなる吸引量調節弁1
80を回して操作するものなどがある。しかしながら、
例えば、吸引量調節弁180を下にして上記本体200
を持つと指がとどかないなど、上記本体200の持ち方
いかんによっては、この吸引調節弁180を片手で操作
することは困難で、その為に、術者が手術中操作する際
に、操作性が悪く、手術を行いにくいという問題があっ
た。
Therefore, in recent years, under the observation of an arthroscope (endoscope), a surgical excision instrument for performing a surgical operation by forming a small puncture hole in this joint without incising the joint and inserting an insertion portion into this puncture hole has been developed. Various proposals have been made. When suctioning the resected tissue at the tip of the insertion portion of this surgical cutting instrument, for example, US Pat.
As in P4203444, a suction amount control valve connected to the side surface of the cutting instrument main body is operated, or, as shown in FIG. 8, the insertion portion 300 of the surgical cutting instrument 100.
When sucking the tissue excised at the tip of the body, the suction amount control valve 1 including a rotary cock provided in front of the main body 200
There are things such as turning 80 to operate. However,
For example, with the suction amount control valve 180 facing down, the main body 200
It is difficult to operate the suction control valve 180 with one hand depending on how to hold the main body 200 such that the fingers do not reach when held by the operator. There was a problem that it was difficult to carry out surgery because of poor health.

[考案の目的] 本考案は上述した点に鑑みてなされたもので、外科用切
除器具の持ち方に左右されることなく、切除した組織の
吸引量が調節でき、操作性の良い外科用切除器具を提供
することを目的とする。
[Purpose of the Invention] The present invention has been made in view of the above-mentioned points, and the surgical excision has a good operability because the suction amount of excised tissue can be adjusted without depending on how the surgical excision instrument is held. The purpose is to provide a device.

[課題を解決するための手段及び作用] 本考案による外科用切除器具は、挿入部先端部に切刃を
有し、この切刃によって切除した組織を吸引する吸引通
路を本体内に設けた外科用切除器具において、長手方向
に対して垂直方向に穿孔された貫通孔を有した棒状の弁
操作部材を、上記本体内部の上記吸引通路に対して垂直
方向に移動自在に且つその長手方向端部を上記本体外周
から突出して設け、上記弁操作部材を移動することによ
り上記吸引通路に対して上記貫通孔の位置を変え上記吸
引通路の道路面積を調節可能としたものであり、上記弁
操作部材を移動すると、上記吸引通路に対して上記貫通
孔の位置が変わり、上記吸引通路の通路面積が調節され
て、上記挿入部先端部の切刃によって切除された組織の
吸引排出量が調整される。
[Means and Actions for Solving the Problems] The surgical cutting instrument according to the present invention has a cutting blade at the tip of the insertion portion, and a surgical passage in which the suction passage for sucking the tissue cut by the cutting blade is provided in the main body. In the cutting instrument for bar, a rod-shaped valve operating member having a through hole formed in a direction perpendicular to the longitudinal direction is movable in the vertical direction with respect to the suction passage inside the main body, and its longitudinal end portion. Is provided so as to project from the outer circumference of the main body, and the position of the through hole can be changed with respect to the suction passage by moving the valve operating member so that the road area of the suction passage can be adjusted. When the is moved, the position of the through hole is changed with respect to the suction passage, the passage area of the suction passage is adjusted, and the suction and discharge amount of the tissue excised by the cutting edge of the tip of the insertion portion is adjusted. .

[実施例] 以下、図面を参照して本考案を具体的に説明する。[Embodiment] Hereinafter, the present invention will be described in detail with reference to the drawings.

第1図〜第2図(b)は本考案の第1実施例を示し、第
1図は外科用切除器具の縦断面図、第2図(a)は第1
図のA−A断面図、第2図(b)は第2図(a)のB−
B断面図である。
1 and 2 (b) show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a surgical cutting instrument, and FIG. 2 (a) is a first section.
FIG. 2B is a sectional view taken along the line AA of FIG.
It is a B sectional view.

(構成) 第1図に示すように外科用切除器具1は、本体2と、こ
の本体2の前端に連接した細径の挿入部3とから構成さ
れる。
(Structure) As shown in FIG. 1, the surgical cutting instrument 1 is composed of a main body 2 and a small-diameter insertion portion 3 connected to the front end of the main body 2.

上記挿入部3は先端部に切刃を有し、例えばこの切刃
は、上記挿入部3の先端側の一部を切欠き開口部3aを
設け、この開口部3aの切欠き部分の縁部を鋭利にして
形成される外刃4と、上記外刃4に回転自在に内装さ
れ、上記外刃4の内側で回転される先端側の側面の一部
を切欠き、その切欠いた部分の縁部を鋭利にして形成さ
れる内刃5とから構成される。上記外刃4及び内刃5
は、例えば、円筒状のステンレス鋼などからなり、互い
にかみ合って体腔内の組織を切除できるようになってい
る。
The insertion portion 3 has a cutting edge at the tip, and for example, the cutting edge is provided with a notch opening portion 3a at a part of the tip end side of the insertion portion 3 and an edge portion of the notch portion of the opening portion 3a. An outer blade 4 formed sharply, and a part of a side surface on the tip side which is rotatably housed in the outer blade 4 and which is rotated inside the outer blade 4 is notched, and an edge of the notched portion is formed. The inner blade 5 is formed by sharpening the portion. The outer blade 4 and the inner blade 5
Is made of, for example, a cylindrical stainless steel or the like, and is capable of engaging with each other to excise the tissue in the body cavity.

上記外刃4の基部側は、固定部材6に係合固定され、さ
らに、この固定部材6は上記本体2の前端側のねじ部に
螺合固定される取付部材7に嵌入され、例えば、半田付
け又はろう付けなどで固着されている。一方、上記内刃
5の基部側は、連結部材8に係合固定されており、この
連結部材8は上記本体2に内装されるモータ9の回転軸
に固定された接続部材10と着脱自在に連結される。
The base portion side of the outer blade 4 is engaged and fixed to a fixing member 6, and the fixing member 6 is fitted in a mounting member 7 screwed and fixed to a screw portion on the front end side of the main body 2, for example, solder. It is fixed by brazing or brazing. On the other hand, the base side of the inner blade 5 is engaged and fixed to the connecting member 8, and the connecting member 8 is detachably attached to the connecting member 10 fixed to the rotating shaft of the motor 9 installed in the main body 2. Be connected.

上記連結部材8には、上記取付部材7と本体2とで形成
される空洞12に連通する吸引孔11が穿設され、この
吸引孔11と上記外刃4の開口部3aとが上記内刃5の
円筒内部を介して連通している。さらに、上記空洞12
は、吸引通路を13を介して、上記本体2の後端に設け
られた吸引継手14と連通している。上記吸引通路13
は、例えば、上記空洞12に開口する傾斜通路部分と上
記本体2の軸方向に貫通する通路部分とからなり、さら
に、上記吸引継手14と図示しない吸引器とが吸引チュ
ーブ20により接続されている。
The connecting member 8 is provided with a suction hole 11 communicating with a cavity 12 formed by the mounting member 7 and the main body 2, and the suction hole 11 and the opening 3a of the outer blade 4 form the inner blade. 5 communicates with each other through the inside of the cylinder. Further, the cavity 12
Communicates with the suction joint 14 provided at the rear end of the main body 2 via the suction passage 13. The suction passage 13
Is composed of, for example, an inclined passage portion that opens into the cavity 12 and a passage portion that penetrates the main body 2 in the axial direction. Further, the suction joint 14 and a suction device (not shown) are connected by a suction tube 20. .

一方、上記本体2に内装されたモータ9には、電源コー
ド16が半田付けされており、この電源コード16を上
記モータ9の格納部後端の蓋17から外部に引出し、図
示しないコントロールボックスと接続して上記モータ9
に電気を供給する。
On the other hand, a power cord 16 is soldered to the motor 9 incorporated in the main body 2. The power cord 16 is pulled out from a lid 17 at the rear end of the storage portion of the motor 9 to a control box (not shown). Connect the above motor 9
Supply electricity to.

ここで、上記吸引通路13の傾斜通路部分には、弁操作
部材たる吸引量調節弁18が設けられ、この吸入量調節
弁18は、第2図(a)に示すように、上記吸引通路1
3に対して垂直方向に上記本体2に穿設されたシリンダ
孔に摺動自在に嵌入されたピストン19と、このピスト
ン19に穿設された貫通孔たる吸引調節孔20とから構
成されており、このピストン19の端部が、弁操作部1
9bとして上記本体2より突出している。さらに、上記
ピストン19には、上記吸引調節孔20を間に挟んで外
周面に周溝を形成し、この周溝に、例えば、シリコンゴ
ムからなるOリング21を装着し、上記本体2に穿設さ
れたシリンダ孔と当接して外部に対するシール機能を持
たせてある。
Here, a suction amount adjusting valve 18 as a valve operating member is provided in the inclined passage portion of the suction passage 13, and the suction amount adjusting valve 18 is, as shown in FIG.
3, a piston 19 slidably fitted in a cylinder hole formed in the main body 2 in a direction perpendicular to the main body 2, and a suction adjusting hole 20 as a through hole formed in the piston 19. , The end of the piston 19 is the valve operating portion 1
9b is projected from the main body 2. Further, a peripheral groove is formed on the outer peripheral surface of the piston 19 with the suction adjusting hole 20 interposed therebetween, and an O-ring 21 made of, for example, silicone rubber is attached to the peripheral groove and is bored in the main body 2. It has a function of sealing against the outside by abutting the provided cylinder hole.

(動作) 上記構成により、例えば、膝関節の半月板部分の切除な
どを行う際、膝関節に形成された穿刺孔に外科用切除器
具1の挿入部3を挿入して、上記本体2に内装されたモ
ータ9を駆動し、このモータ9の回転軸に固定された接
続部材10から、連結部材8をを介して、上記挿入部3
の外刃4に内装された内刃5を回転する。
(Operation) With the above configuration, for example, when excision of the meniscus portion of the knee joint is performed, the insertion portion 3 of the surgical cutting instrument 1 is inserted into the puncture hole formed in the knee joint, and the body 2 is internally provided. The insertion portion 3 is driven from the connecting member 10 fixed to the rotating shaft of the motor 9 via the connecting member 8.
The inner blade 5 installed inside the outer blade 4 is rotated.

この内刃5の回転により、上記外刃4を押付けた部位に
対し、この外刃4の内側に入り込んだ組織部分が回転さ
れる内刃5により切除される。しかして、切除された組
織片及び灌流水は、上記挿入部3の先端の開口部3aか
ら上記内刃5の円筒内部を通り、連結部材8に穿設され
た吸引孔11から空洞12に至り、吸引通路13を通し
て図示しない吸引器により体外へ吸引排出される。この
時、切除された組織片及び灌流水の吸引量の調節を、上
記吸引通路13に設けられた吸引量調節弁18にて行い
ながら手術を進行する。
By the rotation of the inner blade 5, the tissue portion that has entered the inside of the outer blade 4 is cut off by the inner blade 5 that is rotated with respect to the portion where the outer blade 4 is pressed. Then, the excised tissue piece and the perfusion water pass through the inside of the cylinder of the inner blade 5 from the opening 3a at the tip of the insertion part 3, and reach the cavity 12 from the suction hole 11 formed in the connecting member 8. , Is sucked out of the body through the suction passage 13 by a suction device (not shown). At this time, the operation proceeds while adjusting the suction amount of the excised tissue piece and the perfusion water with the suction amount control valve 18 provided in the suction passage 13.

上記吸引量調節弁18は、上記本体2より突出した弁操
作部19bを押しピストン10をスライドさせると、上
記ピストン19に穿設された吸引調節孔20と上記吸引
通路13とで形成される通路の開口面積が、零から最大
で上記吸引通路13の断面積まで連続的に変化させるこ
とができ、通路面積が調節される。
The suction amount adjusting valve 18 is a passage formed by a suction adjusting hole 20 formed in the piston 19 and the suction passage 13 when the valve operating portion 19b protruding from the main body 2 is pushed and the piston 10 is slid. The opening area of can be continuously changed from zero to the maximum cross-sectional area of the suction passage 13, and the passage area is adjusted.

従って、例えば、第7図(a)及び第7図(b)に示す
ように外科用切除器具1の本体2を持った場合でも、あ
るいはその他の持ち方であっても、両手を使うことな
く、片手で弁操作部19bを押してピストン19をスラ
イドさせられ、吸入量調節弁18による灌流水あるいは
切除組織の吸引量の調整が容易に行える。すなわち、上
記本体2に設けた吸引量調節弁18の弁操作部19bを
上記本体2の側面に突出させ、これを指で押すことによ
って上記吸引通路13の通路面積の調節が行えるため、
操作する場合、操作し易く、切除された組織を素早く吸
引させ、つまらせることなく外部に排出できる。
Therefore, for example, even when the body 2 of the surgical cutting instrument 1 is held as shown in FIGS. 7 (a) and 7 (b), or in any other way, it is possible to use both hands without using both hands. By pushing the valve operating portion 19b with one hand and sliding the piston 19, the suction amount adjusting valve 18 can easily adjust the suction amount of the perfusion water or the resected tissue. That is, since the valve operating portion 19b of the suction amount control valve 18 provided in the main body 2 is projected to the side surface of the main body 2 and the finger is pressed to adjust the passage area of the suction passage 13,
When it is operated, it is easy to operate, and the excised tissue can be quickly sucked and discharged outside without being squeezed.

(第2実施例) 次に、本考案の第2実施例について説明する。第3図は
本考案の第2実施例を示し、吸入量調節弁を示す断面図
である。
(Second Embodiment) Next, a second embodiment of the present invention will be described. FIG. 3 shows a second embodiment of the present invention and is a sectional view showing an intake amount control valve.

第2実施例においては弁操作部材たる吸入量調節弁18
の構成が第1実施例と異なる他は、第1実施例と同じで
あり、同様部分についてはその説明を省略する。
In the second embodiment, the suction amount control valve 18 which is a valve operating member.
The second embodiment is the same as the first embodiment except that the configuration is different from that of the first embodiment, and the description of the same portions will be omitted.

ピストン19は、貫通孔たる吸引調節孔20を有する太
径部19aと弁操作部である細径部19bとからなり、
外科用切除器具1の本体2の吸引通路13に対して垂直
に嵌装され、この細径部19bが上記本体2から突出し
ている。上記ピストン19が嵌装される本体2には、上
記太径部19aの端部側にねじ部を設けて螺合される止
ねじ22が装着されており この止ねじ22と上記ピス
トン19の太径部19aの端部との間に、スプリング2
3が介装され、上記ピストン19を付勢している。さら
に、上記ピストン19には、上記吸引調節孔20を間に
挟んで外周面に周溝を形成し、この周溝に、例えば、シ
リコンゴムからなるOリング21が装着されている。
The piston 19 includes a large diameter portion 19a having a suction adjusting hole 20 that is a through hole and a small diameter portion 19b that is a valve operating portion.
The small diameter portion 19b is fitted vertically to the suction passage 13 of the main body 2 of the surgical cutting instrument 1 and protrudes from the main body 2. The body 2 into which the piston 19 is fitted is equipped with a set screw 22 that is screwed to the end portion side of the large diameter portion 19a and is screwed together. Between the end of the diameter portion 19a, the spring 2
3 is interposed and urges the piston 19. Further, a peripheral groove is formed on the outer peripheral surface of the piston 19 with the suction adjusting hole 20 interposed therebetween, and an O-ring 21 made of, for example, silicone rubber is attached to the peripheral groove.

ここで、上記吸引量調節弁18の弁操作部19bを押圧
しない状態では、上記本体2の吸引通路13と上記ピス
トン19の吸引調節孔20とが一致しており、上記弁操
作部19bを指で押圧スライドさせることにより、上記
吸引調節孔20と上記吸引通路13とで形成される通路
の開口面積を連続的に小さくでき、同様に、灌流水及び
切除組織の吸引量の調整が行える。この時、上記ピスト
ン19はスプリング23により付勢されているため、指
を離せば元に戻り、上記吸引量調節弁18の弁操作部1
9bを押圧保持する力で吸引量が調整でき、操作性が良
い。
Here, in a state where the valve operating portion 19b of the suction amount adjusting valve 18 is not pressed, the suction passage 13 of the main body 2 and the suction adjusting hole 20 of the piston 19 are aligned with each other, and the valve operating portion 19b is touched. By pressing and sliding with, the opening area of the passage formed by the suction adjusting hole 20 and the suction passage 13 can be continuously reduced, and similarly, the suction amount of the perfusion water and the excised tissue can be adjusted. At this time, since the piston 19 is biased by the spring 23, it returns to its original position when the finger is released, and the valve operating portion 1 of the suction amount control valve 18 is returned.
The amount of suction can be adjusted by the force that presses and holds 9b, and operability is good.

尚、その他の構造は上記第1実施例と同様であり、その
動作も同様である。さらに、この第2実施例の効果は上
記第1実施例と同様であり、また、吸引量を調整する上
記ピストン19の押圧力は、上記止ねじ22を調節する
ことにより加減することが可能である。
The other structure is the same as that of the first embodiment, and the operation is also the same. Further, the effect of the second embodiment is similar to that of the first embodiment, and the pressing force of the piston 19 for adjusting the suction amount can be adjusted by adjusting the set screw 22. is there.

(第3実施例) 第4図は本考案の第3実施例を示し、吸入量調節弁を示
す断面図である。
(Third Embodiment) FIG. 4 is a sectional view showing a suction amount control valve according to a third embodiment of the present invention.

第3実施例は、第2実施例におけるピストン19の貫通
孔たる吸引調節孔20が、上記ピストン19の弁操作部
19bを押圧しない状態では上記本体2の吸引通路13
と一致せず、上記ピストン19が吸引通路13を遮断し
ている。従って、上記ピストン19の弁操作部19bを
指で押圧スライドさせることにより、上記吸引調節孔2
0と上記吸引通路13とで形成される通路の開口面積を
第2実施例とは逆に遮断状態から徐々に大きくすること
ができ、吸引量の調節が行える。この第3実施例の効果
は上述の第2実施例と同様であり、使用条件に応じて適
宜選択される。
In the third embodiment, when the suction adjusting hole 20 which is the through hole of the piston 19 in the second embodiment does not press the valve operating portion 19b of the piston 19, the suction passage 13 of the main body 2 is used.
And the piston 19 blocks the suction passage 13. Therefore, by pressing and sliding the valve operating portion 19b of the piston 19 with a finger, the suction adjusting hole 2
In contrast to the second embodiment, the opening area of the passage formed by 0 and the suction passage 13 can be gradually increased from the blocked state, and the suction amount can be adjusted. The effect of the third embodiment is similar to that of the second embodiment described above, and is appropriately selected according to the use conditions.

(第4実施例) また、本考案の第4実施例について説明する。第5図は
本考案の第4実施例を示し、吸入量調節弁を示す断面図
である。
(Fourth Embodiment) A fourth embodiment of the present invention will be described. FIG. 5 is a sectional view showing a suction amount control valve according to a fourth embodiment of the present invention.

第4実施例は、弁操作部材たる18の構成が第1〜第3
実施例と異なる他は同じであり、外科用切除器具1の本
体2に設けられた吸引通路13は、例えば、シリコンチ
ューブなどからなる弾性チューブ22の内径により形成
されている。一方、上記本体2には、上記弾性チューブ
22の軸方向と垂直にスライダ24が摺動自在に設けら
れ、上記吸入量調節弁18を構成している。
In the fourth embodiment, the structure of the valve operating member 18 is the first to third
The suction passage 13 provided in the main body 2 of the surgical cutting instrument 1 is formed by the inner diameter of an elastic tube 22 made of, for example, a silicon tube or the like except that it is different from the embodiment. On the other hand, a slider 24 is slidably provided in the main body 2 in a direction perpendicular to the axial direction of the elastic tube 22, and constitutes the suction amount control valve 18.

上記スライダ24は、略中央にフランジ部24aを有
し、このフランジ部24aの一方は、円筒状の弁操作部
24bが上記本体2より突出しており、また他方は円筒
状のロッド24cの先端が上記弾性チューブ22に対向
している。このロッド24cの先端は滑かな球状に形成
され、上記弾性チューブ22を傷付け損傷せぬように仕
上げられている。また、上記スライダ24は、フランジ
部24aを介してロッド24c側からスプリング23に
より付勢され、上記弁操作部24bを押圧しない状態で
は、上記弾性チューブ22の外周に上記ロッド24cの
球状先端が、上記弾性チューブ22を変形させない程度
に僅かに接触している。
The slider 24 has a flange portion 24a at substantially the center thereof. One of the flange portions 24a has a cylindrical valve operating portion 24b protruding from the main body 2, and the other end has a cylindrical rod 24c. It faces the elastic tube 22. The tip of the rod 24c is formed in a smooth spherical shape, and is finished so as not to damage or damage the elastic tube 22. Further, the slider 24 is biased by the spring 23 from the rod 24c side via the flange portion 24a and does not press the valve operating portion 24b, and the spherical tip of the rod 24c is provided on the outer periphery of the elastic tube 22. The elastic tube 22 is slightly in contact with the elastic tube 22 so as not to be deformed.

上記構成により、スライダ24の弁操作部24bを指で
押圧することにより、上記スライダ24のロッド24c
の球状先端が上記弾性チューブ22を押圧変形させ、吸
引通路13の開口面積を減少させ、灌流水及び切除組織
の吸引量の調整が行える。この場合、第2,第3実施例
と同様な作用、効果が得られるが、第4実施例では、上
記吸引通路13が上記弾性チューブ22で形成されるた
め外部シールのためのOリング21が不要となる。従っ
て、このOリング21の摺動抵抗の分だけスプリング2
3の付勢力を弱めに設定でき、より軽い操作力で吸引量
の調整が行え、操作性が一層向上する。
With the above configuration, by pressing the valve operating portion 24b of the slider 24 with a finger, the rod 24c of the slider 24 can be pressed.
The spherical tip of (1) presses and deforms the elastic tube 22 to reduce the opening area of the suction passage 13 and the suction amount of the perfusion water and the excised tissue can be adjusted. In this case, the same actions and effects as those of the second and third embodiments can be obtained, but in the fourth embodiment, since the suction passage 13 is formed by the elastic tube 22, the O-ring 21 for the external seal is formed. It becomes unnecessary. Therefore, the spring 2 is reduced by the sliding resistance of the O-ring 21.
The biasing force of 3 can be set weakly, and the suction amount can be adjusted with a lighter operating force, further improving the operability.

尚、本考案は、上述の実施例に限定されるものではな
く、吸引量調節弁18は、例えば、上記ピストン19及
びスライダ24の回転防止のため、その断面形状を円で
はなく多角形としたり、回り止めのピンを設けるなどし
ても良く、また、第6図に示すように、偏心した円柱を
組合せたピストン25としても良い。さらには、上記ピ
ストン19の弁操作部19b及びスライダ24の弁操作
部24bに色や文字によるマーキングを施し視認性を高
め、吸引通路13の開閉状態をわかりやすくするなど種
々設定、形成される。
The present invention is not limited to the above-described embodiment, and the suction amount control valve 18 may have a polygonal cross section instead of a circle to prevent the piston 19 and the slider 24 from rotating. Alternatively, a pin for preventing rotation may be provided, or as shown in FIG. 6, the piston 25 may be a combination of eccentric cylinders. Furthermore, the valve operating portion 19b of the piston 19 and the valve operating portion 24b of the slider 24 are marked with colors and characters to enhance the visibility and make it easier to understand the open / closed state of the suction passage 13, and various settings are made.

[考案の効果] 以上述べたように本考案によれば、長手方向に対して垂
直方向に穿孔された貫通孔を有した棒状の弁操作部材
を、上記本体内部の上記吸引通路に対して垂直方向に移
動自在に且つその長手方向端部を上記本体外周から突出
して設け、この弁操作部材を移動することによって吸引
量を調節することができるため、上記外科用切除器具の
本体の持ち方に左右されず吸引量が調節でき、操作性が
良い。また、吸引通路の開閉が自由に行えるため、吸引
した組織がつまることなく排出できるなど優れた効果を
奏する。
[Advantage of the Invention] As described above, according to the present invention, a rod-shaped valve operating member having a through hole formed in a direction perpendicular to the longitudinal direction is provided vertically to the suction passage inside the main body. Direction of the surgical cutting instrument, the longitudinal end of the surgical cutting instrument can be adjusted by moving the valve operating member. The suction amount can be adjusted without being affected by it, and operability is good. In addition, since the suction passage can be freely opened and closed, the suctioned tissue can be discharged without boring, which is an excellent effect.

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

第1図〜第2図(b)は本考案の第1実施例を示し、第
1図は外科用切除器具の縦断面図、第2図(a)は第1
図のA−A断面図、第2図(b)は第2図(a)のB−
B断面図、第3図は本考案の第2実施例を示し、吸入量
調節弁を示す断面図、第4図は本考案の第3実施例を示
し、吸入量調節弁を示す断面図、第5図は本考案の第4
実施例を示し、吸入量調節弁を示す断面図、第6図は本
考案の変形例を示す断面図、第7図(a)は外科用切除
器具の操作状態を示す説明図、第7図(b)は外科用切
除器具の別の操作状態を示す説明図、第8図は従来の外
科用切除器具の斜視図である。 1……外科用切除器具、2……本体 3……挿入部、4……外刃 5……内刃、13……吸引通路 18……吸引量調節弁 19b,24b……弁操作部
1 and 2 (b) show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a surgical cutting instrument, and FIG. 2 (a) is a first section.
FIG. 2B is a sectional view taken along the line AA of FIG.
B sectional view, FIG. 3 shows a second embodiment of the present invention, a sectional view showing an intake amount control valve, FIG. 4 shows a third embodiment of the present invention, a sectional view showing an intake amount control valve, FIG. 5 is the fourth of the present invention.
FIG. 7 is a sectional view showing an embodiment, showing a suction amount control valve, FIG. 6 is a sectional view showing a modified example of the present invention, and FIG. 7 (a) is an explanatory view showing an operating state of a surgical cutting instrument, FIG. (B) is explanatory drawing which shows another operating state of a surgical cutting instrument, and FIG. 8 is a perspective view of the conventional surgical cutting instrument. 1 ... Surgical cutting instrument, 2 ... Main body 3 ... Insertion part, 4 ... Outer blade 5 ... Inner blade, 13 ... Suction passage 18 ... Suction amount control valve 19b, 24b ... Valve operating part

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】挿入部先端部に切刃を有し、この切刃によ
って切除した組織を吸引する吸引通路を本体内に設けた
外科用切除器具において、 長手方向に対して垂直方向に穿孔された貫通孔を有した
棒状の弁操作部材を、上記本体内部の上記吸引通路に対
して垂直方向に移動自在に且つその長手方向端部を上記
本体外周から突出して設け、上記弁操作部材を移動する
ことにより上記吸引通路に対して上記貫通孔の位置を変
え上記吸引通路の道路面積を調節可能としたことを特徴
とする外科用切除器具。
1. A surgical cutting instrument having a cutting blade at the tip of the insertion portion, and a suction passage for sucking the tissue cut by the cutting blade provided in the main body. A rod-shaped valve operating member having a through hole is provided so as to be movable in the vertical direction with respect to the suction passage inside the main body, and its longitudinal end projects from the outer periphery of the main body to move the valve operating member. By doing so, the position of the through hole can be changed with respect to the suction passage so that the road area of the suction passage can be adjusted.
JP1988057467U 1988-04-28 1988-04-28 Surgical cutting instrument Expired - Lifetime JPH065771Y2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1988057467U JPH065771Y2 (en) 1988-04-28 1988-04-28 Surgical cutting instrument
DE3906301A DE3906301A1 (en) 1988-04-28 1989-02-28 Surgical resection instrument
US07/633,194 US5123904A (en) 1988-04-28 1990-12-31 Surgical resecting instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988057467U JPH065771Y2 (en) 1988-04-28 1988-04-28 Surgical cutting instrument

Publications (2)

Publication Number Publication Date
JPH01159825U JPH01159825U (en) 1989-11-06
JPH065771Y2 true JPH065771Y2 (en) 1994-02-16

Family

ID=31283322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988057467U Expired - Lifetime JPH065771Y2 (en) 1988-04-28 1988-04-28 Surgical cutting instrument

Country Status (1)

Country Link
JP (1) JPH065771Y2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835588U (en) * 1971-08-30 1973-04-27
JPS5675131A (en) * 1979-11-22 1981-06-22 Olympus Optical Co Endoscope apparatus
JPS6192662A (en) * 1984-07-23 1986-05-10 サージカル ダイナミクス インコーポレイティド Surgical apparatus
JPS61265133A (en) * 1985-05-21 1986-11-22 オリンパス光学工業株式会社 Incision instrument for surgery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835588U (en) * 1971-08-30 1973-04-27
JPS5675131A (en) * 1979-11-22 1981-06-22 Olympus Optical Co Endoscope apparatus
JPS6192662A (en) * 1984-07-23 1986-05-10 サージカル ダイナミクス インコーポレイティド Surgical apparatus
JPS61265133A (en) * 1985-05-21 1986-11-22 オリンパス光学工業株式会社 Incision instrument for surgery

Also Published As

Publication number Publication date
JPH01159825U (en) 1989-11-06

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