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JP2006102093A - Medical treatment instrument - Google Patents

Medical treatment instrument
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Publication number
JP2006102093A
JP2006102093AJP2004292433AJP2004292433AJP2006102093AJP 2006102093 AJP2006102093 AJP 2006102093AJP 2004292433 AJP2004292433 AJP 2004292433AJP 2004292433 AJP2004292433 AJP 2004292433AJP 2006102093 AJP2006102093 AJP 2006102093A
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Japan
Prior art keywords
joint
medical treatment
treatment instrument
blades
shaft
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Pending
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JP2004292433A
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Japanese (ja)
Inventor
Kenichiro Iso
賢一郎 磯
Koji Kojima
康志 小島
Toshimi Shikumo
俊美 紫雲
Yoshihisa Inoue
善久 井上
Takahito Kikuchi
孝仁 菊地
Keiji Uchimura
圭二 内村
Makoto Aizawa
誠 相澤
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SANEY SEIKO Inc
Mizuho Ika Kogyo KK
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SANEY SEIKO Inc
Mizuho Ika Kogyo KK
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Priority to JP2004292433ApriorityCriticalpatent/JP2006102093A/en
Publication of JP2006102093ApublicationCriticalpatent/JP2006102093A/en
Pendinglegal-statusCriticalCurrent

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Abstract

<P>PROBLEM TO BE SOLVED: To allow a blade of forceps to easily approach to an affected part. <P>SOLUTION: This medical treatment instrument is provided with a treatment part 2 and a base part respectively at the tip and the rear end of a shaft part, and the treatment part 2 is connected to the shaft part via a joint 4. The joint 4 is provided with a plurality of short tubes 4a, 4b, 4c and 4d and a flexible piece 4e for connecting the short tubes 4a, 4b, 4c and 4d to one another on two generating lines positioned in the both sides of their common shaft, and the treatment part 2 can be swung at the tip of the shaft part 1 via the joint 4 so that the joint 4 becomes narrower and shorter to curve at a small curvature and therefore the treatment part is allowed to easily approach to the affected part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Translated fromJapanese

本発明は、鉗子、鋏、キュレット、吸引管等の医療用処置具に関する。  The present invention relates to a medical treatment instrument such as forceps, scissors, curette, and suction tube.

従来、鉗子等の医療用処置具は鋏状に構成され、手元のレバーを操作して先端のブレードを開閉動作させ患部の組織等を除去したり、切除したりするようになっている。  2. Description of the Related Art Conventionally, medical treatment tools such as forceps are configured in a saddle shape, and a lever at a hand is operated to open and close a blade at a distal end so as to remove or excise affected tissue.

ところが、従来の医療用処置具は例えば鉗子であれば軸部の先でブレードを単に開閉動作させるようになっているだけであるから、患者の体内に確保したトンネル状の通路から鉗子を挿入した場合、通路の突き当たりの箇所については処置することができるが、この突き当りの周辺をある程度の広がりを持って処置することができないという問題がある。  However, since the conventional medical treatment tool, for example, is a forceps, the blade is simply opened and closed at the end of the shaft, so the forceps were inserted from a tunnel-shaped passage secured in the patient's body. In this case, the end of the passage can be treated, but there is a problem that the periphery of the end cannot be treated with a certain extent.

例えば、下垂体手術のような狭い箇所の手術では、腫瘍を取り除くためには一種類の鉗子で患部にアプローチすることが難しく、処理部の形状を変えた多種類の鉗子を使用して行われる。そのため、手術が煩雑となり術者と患者の双方に負担がかかるという問題がある。  For example, in a narrow part surgery such as pituitary surgery, it is difficult to approach the affected area with a single type of forceps in order to remove the tumor, and it is performed using a variety of types of forceps whose shape of the processing part has been changed. . Therefore, there is a problem that the operation becomes complicated and burdens both the operator and the patient.

また、鉗子の軸部とブレードとの間にヒンジピン等を設けることによりブレードを首振り可能とすることで、上記問題を解決することも可能であるとも考えられるが、その場合は屈曲部の箇所が大径化したり長寸化したりし、却って患部にアプローチし難くなるという問題がある。また、ブレード等を遠隔操作するためのケーブル等を配置し難いという問題がある。  In addition, it is considered that the above problem can be solved by providing a hinge pin or the like between the shaft portion of the forceps and the blade so that the above-mentioned problem can be solved. However, there is a problem that it becomes difficult to approach the affected area. In addition, there is a problem that it is difficult to arrange a cable or the like for remotely operating the blade or the like.

したがって、本発明は上記不具合を解消することができる医療用処置具を提供することを目的とする。  Therefore, an object of the present invention is to provide a medical treatment instrument that can solve the above-mentioned problems.

上記課題を解決するため、請求項1に係る発明は、軸部(1)の先端と後端にそれぞれ処理部(2)と基部(3)を備え、処理部(2)が軸部(1)に対し継手(4)を介して連結された医療用処置具において、上記継手(4)が、複数個の短管(4a,4b,4c,4d)と、短管(4a,4b,4c,4d)同士をそれらの共通軸を挟む二本の母線上で連結する可撓片(4e)とを有し、この継手(4)を介し処理部(2)が軸部(1)の先端で首振り可能とされた医療用処置具を採用する。  In order to solve the above problems, the invention according to claim 1 is provided with a processing portion (2) and a base portion (3) at the front end and the rear end of the shaft portion (1), respectively, and the processing portion (2) is the shaft portion (1). ), The joint (4) includes a plurality of short tubes (4a, 4b, 4c, 4d) and a short tube (4a, 4b, 4c). , 4d) and a flexible piece (4e) for connecting two common buses with the common shaft between them, and the processing portion (2) is connected to the tip of the shaft portion (1) through the joint (4). A medical treatment tool that can be swung with a head is adopted.

また、請求項2に係る発明は、請求項1に記載の医療用処置具において、弾性を有する金属管の両側面にそれぞれ複数箇所にわたって切込(4f)を入れることにより、上記継手(4)の短管(4a,4b,4c,4d)及び可撓片(4e)が形成された医療用処置具を採用する。  The invention according toclaim 2 is the medical treatment instrument according to claim 1, wherein the joint (4) is formed by making incisions (4f) at a plurality of locations on both side surfaces of the elastic metal tube. The medical treatment tool in which the short pipes (4a, 4b, 4c, 4d) and the flexible piece (4e) are formed is employed.

また、請求項3に係る発明は、請求項1又は請求項2に記載の医療用処置具において、上記継手(4)の内壁面に、継手(4)を屈曲操作する伝動用線体(26a,26b)の通る溝(4g)が形成された医療用処置具を採用する。  The invention according toclaim 3 is the medical treatment instrument according to claim 1 orclaim 2, wherein the transmission wire body (26a) is configured to bend the joint (4) on the inner wall surface of the joint (4). , 26b), a medical treatment instrument in which a groove (4g) is formed is employed.

また、請求項4に係る発明は、請求項1乃至請求項3のいずれかに記載の医療用処置具において、上記継手(4)の中空内にコイルスプリング(10)が挿入された医療用処置具を採用する。  The invention according toclaim 4 is the medical treatment instrument according to any one of claims 1 to 3, wherein a coil spring (10) is inserted into the hollow of the joint (4). Adopt tools.

請求項1に係る発明によれば、軸部(1)の先端と後端にそれぞれ処理部(2)と基部(3)を備え、処理部(2)が軸部(1)に対し継手(4)を介して連結された医療用処置具において、上記継手(4)が、複数個の短管(4a,4b,4c,4d)と、短管(4a,4b,4c,4d)同士をそれらの共通軸を挟む二本の母線上で連結する可撓片(4e)とを有し、この継手(4)を介し処理部(2)が軸部(1)の先端で首振り可能とされたことから、継手(4)が細くかつ短くなり小さい曲率半径で屈曲可能となり、従って患部にアプローチしやすくなる。また、処理部(2)や継手(4)を操作するためのケーブル、ロッド等を継手(4)の内部の空洞内に収納することができ、従ってこの点からも患部にアプローチしやすくなる。  According to the invention which concerns on Claim 1, it equips the front-end | tip and the rear end of a shaft part (1) with a process part (2) and a base (3), respectively, and a process part (2) is a joint ( 4) In the medical treatment instrument connected via 4), the joint (4) includes a plurality of short tubes (4a, 4b, 4c, 4d) and short tubes (4a, 4b, 4c, 4d). A flexible piece (4e) connected on two bus bars sandwiching the common shaft, and the processing portion (2) can swing at the tip of the shaft portion (1) through the joint (4). As a result, the joint (4) is thin and short, and can be bent with a small radius of curvature, and therefore, it is easy to approach the affected area. In addition, cables, rods, and the like for operating the processing unit (2) and the joint (4) can be accommodated in the cavity inside the joint (4). Therefore, it is easy to approach the affected part also in this respect.

請求項2に係る発明によれば、請求項1に記載の医療用処置具において、弾性を有する金属管の両側面にそれぞれ複数箇所にわたって切込(4f)を入れることにより、上記継手(4)の短管(4a,4b,4c,4d)及び可撓片(4e)が形成されたことから、継手(4)を簡易に製作することができる。  According to the invention according toclaim 2, in the medical treatment instrument according to claim 1, the joint (4) is formed by making incisions (4f) at a plurality of positions on both side surfaces of the elastic metal tube. Since the short pipe (4a, 4b, 4c, 4d) and the flexible piece (4e) are formed, the joint (4) can be easily manufactured.

請求項3に係る発明によれば、請求項1又は請求項2に記載の医療用処置具において、上記継手(4)の内壁面に、継手(4)を屈曲操作する伝動用線体(26a,26b)の通る溝(4g)が形成されたことから、継手(4)を屈曲操作するワイヤ、ロッド等の伝動用線体(26a,26b)を継手(4)の内壁面の溝(4g)内に収めることができ、伝動用線体(26a,26b)を円滑に案内することができる。  According to the invention which concerns onClaim 3, in the medical treatment tool of Claim 1 orClaim 2, the transmission wire body (26a) which bends the joint (4) to the inner wall surface of the joint (4). , 26b) is formed, so that the wire (26a, 26b) such as a wire or a rod for bending the joint (4) is formed into a groove (4g) on the inner wall surface of the joint (4). ), And the transmission wire bodies (26a, 26b) can be smoothly guided.

請求項4に係る発明によれば、請求項1乃至請求項3のいずれかに記載の医療用処置具において、上記継手(4)の中空内にコイルスプリング(10)が挿入されたことから、継手(4)の空洞内に人体の組織等が入り込み難くすることができる。  According to the invention according toclaim 4, in the medical treatment instrument according to any one of claims 1 to 3, the coil spring (10) is inserted into the hollow of the joint (4). It is possible to make it difficult for human tissue or the like to enter the cavity of the joint (4).

以下、図面を参照して発明を実施するための最良の形態について説明する。  The best mode for carrying out the invention will be described below with reference to the drawings.

図1乃至図5に示すように、この医療用処置具である鉗子は、軸部1の先端と後端にそれぞれ処理部2と基部3を備える。  As shown in FIGS. 1 to 5, the forceps as the medical treatment tool includes aprocessing unit 2 and abase 3 at the front end and the rear end of the shaft 1, respectively.

軸部1は、剛性のある例えばステンレス鋼製のパイプ1aで形成され、鼻腔等に挿入可能に細長く形成される。  The shaft portion 1 is formed of a rigid pipe 1a made of, for example, stainless steel, and is formed in an elongated shape so that it can be inserted into a nasal cavity or the like.

処理部2は、図1〜図4、図6〜図8に示すように、鉗子用の一対のブレード2a,2bを備える。一対のブレード2a,2bはホルダ5に回動可能に支持される。一対のブレード2a,2bの後端はホルダ5の先端に形成された縦溝内の上下にそれぞれ挿入され、縦溝を横断する各支点ピン6によりホルダ5に枢着される。また、各ブレード2a,2bからは支点ピン6を越えて上記縦溝内で重畳するアーム7が突出し、アーム7は重なり合った状態でスライダ8の先端に一本の枢ピン9で連結される。スライダ8はホルダ5を前後方向に貫通するガイド孔5a内にスライド可能に挿入される。図8(A)〜(D)に示すように、スライダ8がホルダ5のガイド孔5a内を前方にスライドすると一対のブレード2a,2bが開き、逆に後方にスライドすると図8(D)〜(A)に示すように一対のブレード2a,2bが閉じる。  As shown in FIGS. 1 to 4 and FIGS. 6 to 8, theprocessing unit 2 includes a pair offorceps blades 2 a and 2 b. The pair ofblades 2a and 2b are rotatably supported by theholder 5. The rear ends of the pair ofblades 2a and 2b are respectively inserted into the vertical groove formed at the tip of theholder 5 and are pivotally attached to theholder 5 by therespective fulcrum pins 6 traversing the vertical groove. From eachblade 2a, 2b, anarm 7 that overlaps in the vertical groove protrudes beyond thefulcrum pin 6, and thearm 7 is connected to the end of theslider 8 by asingle pivot pin 9 in an overlapping state. Theslider 8 is slidably inserted into aguide hole 5a penetrating theholder 5 in the front-rear direction. As shown in FIGS. 8A to 8D, when theslider 8 slides forward in theguide hole 5a of theholder 5, the pair ofblades 2a and 2b opens, and conversely slides backward to move theslide 8 backward. As shown in (A), the pair ofblades 2a and 2b are closed.

処理部2は、図1乃至図3に示すように、軸部1の先端に屈曲可能な継手4を介し連結され、図7に示すように、平面上での首振り動作が可能になっている。  As shown in FIGS. 1 to 3, theprocessing unit 2 is connected to the tip of the shaft unit 1 via abendable joint 4, and can swing on a plane as shown in FIG. 7. Yes.

図6、図7及び図9(A)〜(E)に示すように、継手4は、複数個の短管4a,4b,4c,4dと、短管4a,4b,4c,4d同士をそれらの共通軸を挟む二本の母線上で隙間が空くように連結する可撓片4eとを有する。両端の短管4a,4dはホルダ5と軸部1に連結するので多少長めに形成されるが、中間の短管4b,4cは外径に比べ長さが短い筒体として形成される。可撓片4eは短管4a,4b,4c,4dの端面間において半径方向及び軸方向に延びる板片として形成される。継手4は短管と可撓片とを別個に形成した後で接合することによっても作ることができるが、この実施の形態では、弾性を有する金属管の両側面にそれぞれ複数箇所にわたって半径方向に切込4fを入れることにより短管4a,4b,4c,4d及び可撓片4eが当初から一体で形成され、短管4a,4b,4c,4d同士の間に隙間が形成される。切込4fは図9(A)に示すように半径方向に入れた後に更に軸方向に延長することにより、上記可撓片4eをより長く形成し、板バネを屈曲しやすくすることができる。継手4の短管4b,4c及び可撓片4eは自在に増減可能であり、その増減により処理部2の屈曲角や屈曲方向を適宜変更することができる。金属管としては例えばNi−Ti合金やステンレス鋼を用いることができ、ワイヤカットとマシニングセンタを使用して金属管から継手4を切り出すことができる。  As shown in FIGS. 6, 7 and 9A to 9E, thejoint 4 includes a plurality ofshort tubes 4a, 4b, 4c, 4d andshort tubes 4a, 4b, 4c, 4d. And aflexible piece 4e that is connected so that a gap is left on two busbars sandwiching the common shaft. Theshort tubes 4a and 4d at both ends are connected to theholder 5 and the shaft portion 1 and are formed to be slightly longer. However, the intermediateshort tubes 4b and 4c are formed as a cylinder having a shorter length than the outer diameter. Theflexible piece 4e is formed as a plate piece extending in the radial direction and the axial direction between the end faces of theshort tubes 4a, 4b, 4c, 4d. Thejoint 4 can also be made by separately forming a short tube and a flexible piece and then joining them. In this embodiment, however, in this embodiment, both sides of the elastic metal tube are radially arranged at a plurality of locations. By making thecut 4f, theshort tubes 4a, 4b, 4c, 4d and theflexible piece 4e are integrally formed from the beginning, and a gap is formed between theshort tubes 4a, 4b, 4c, 4d. As shown in FIG. 9A, thecut 4f is inserted in the radial direction and then further extended in the axial direction, whereby theflexible piece 4e can be formed longer and the leaf spring can be easily bent. Theshort pipes 4b and 4c and theflexible piece 4e of thejoint 4 can be freely increased and decreased, and the bending angle and the bending direction of theprocessing unit 2 can be appropriately changed by the increase and decrease. For example, a Ni—Ti alloy or stainless steel can be used as the metal tube, and thejoint 4 can be cut out from the metal tube using a wire cut and a machining center.

また、継手4の内壁面には、継手4を屈曲操作するための図7に示すような伝動用線体であるケーブル26a,26bの通る溝4gが形成される。この溝4gは継手4の内壁面の円筒面において、上記可撓片4eの位置と90度位相がずれた二本の母線上に夫々形成される。伝動用線体としてはケーブル26a,26bのほか、ワイヤ、ロッド等を用いることができるが、この実施の形態では屈曲自在なケーブルが用いられる。二本のケーブル26a,26bが継手4の内面の各溝4g内にスライド可能に収納される。  Further, the inner wall surface of thejoint 4 is formed with agroove 4g through whichcables 26a and 26b, which are transmission wires as shown in FIG. Thegrooves 4g are respectively formed on two bus bars that are 90 degrees out of phase with the position of theflexible piece 4e on the cylindrical surface of the inner wall surface of thejoint 4. As the transmission wire, in addition to thecables 26a and 26b, a wire, a rod, or the like can be used. In this embodiment, a bendable cable is used. Twocables 26 a and 26 b are slidably accommodated in therespective grooves 4 g on the inner surface of thejoint 4.

この継手4の後端には、図9(C)(E)に示すように大径の保持穴4hが形成され、この保持穴4h内に軸部1のパイプ1aの先端が挿入され固定される。また、継手4の前端には、図9(C)に示すように大径の係合穴4iが形成され、この係合穴4i内に図8に示すように上記ホルダ5の後部が挿入され保持される。これにより、継手4が図7に示すごとく平面上で屈曲すると、処理部2のブレード2a,2bは軸部1の先で継手4が屈曲する方向に首振り動作することになる。  As shown in FIGS. 9C and 9E, a large-diameter holding hole 4h is formed at the rear end of thejoint 4, and the tip of the pipe 1a of the shaft portion 1 is inserted and fixed in theholding hole 4h. The Further, a large-diameter engagement hole 4i is formed at the front end of the joint 4 as shown in FIG. 9C, and the rear portion of theholder 5 is inserted into theengagement hole 4i as shown in FIG. Retained. Accordingly, when the joint 4 is bent on a plane as shown in FIG. 7, theblades 2 a and 2 b of theprocessing unit 2 swing in the direction in which thejoint 4 is bent at the tip of the shaft portion 1.

図6及び図7に示すように、上記継手4の中空内にはコイルスプリング10が挿入される。コイルスプリング10は継手4の内側から切込4fを遮蔽するように設けられる。これにより、継手4の空洞内に人体の組織等が入り込み難くし、洗浄、殺菌等を行いやすくすることができる。  As shown in FIGS. 6 and 7, acoil spring 10 is inserted into the hollow of thejoint 4. Thecoil spring 10 is provided so as to shield thecut 4 f from the inside of thejoint 4. This makes it difficult for human tissue or the like to enter the cavity of the joint 4 and facilitates cleaning, sterilization, and the like.

上記処理部2のブレード2a,2bは、継手4と共に首振り動作が可能なだけでなく継手4上で軸回りに回転可能でもある。すなわち、図8に示すように、ホルダ5の後部の外周には環状溝12が形成され、この環状溝12内に継手の先端に植設されたガイドピン13が挿入される。これにより、スライダ8が軸回りに捩られると、ブレード2a,2b等を介しスライダ8に連結されたホルダ5が、ガイドピン13と環状溝12との摺接作用で継手4に対し軸回りに回転する。  Theblades 2 a and 2 b of theprocessing unit 2 are not only capable of swinging together with the joint 4 but also capable of rotating around the axis on thejoint 4. That is, as shown in FIG. 8, anannular groove 12 is formed on the outer periphery of the rear part of theholder 5, and aguide pin 13 implanted at the tip of the joint is inserted into theannular groove 12. As a result, when theslider 8 is twisted about the axis, theholder 5 connected to theslider 8 via theblades 2a, 2b and the like is moved about the axis with respect to the joint 4 by the sliding contact action between theguide pin 13 and theannular groove 12. Rotate.

基部3は、図1乃至図5に示すように、その前部で軸部1の後端を保持し、その下側には術者が把持するハンドル14が設けられる。また、基部3には、ハンドル14を持つ術者の指で操作しうるように、ブレード開閉操作部15と、ブレード回転操作部16と、ブレード首振り操作部17とが設けられる。  As shown in FIGS. 1 to 5, thebase portion 3 holds the rear end of the shaft portion 1 at its front portion, and ahandle 14 is provided on the lower side of thebase portion 3 to be grasped by an operator. In addition, thebase 3 is provided with a blade opening / closing operation unit 15, a bladerotation operation unit 16, and a bladeswing operation unit 17 so that it can be operated by an operator's finger having ahandle 14.

ブレード開閉操作部15は、図1乃至図5に示すように、開閉操作レバー15aと、開閉操作レバー15aの動きをブレード2a,2bに伝達する伝動用線体であるワイヤ18とを具備する。開閉操作レバー15aは、ハンドル14を持つ手の指で引くことができるように基部3に支点ピン19を介して保持され、基部3に埋設された弾性体である圧縮コイルバネ32により同じく基部3に埋設されたプランジャ33を介し常時前方に付勢される。ワイヤ18は、ブレード2a,2b後方のスライダ8と開閉操作レバー15aとの間に伝動可能に掛け渡される。具体的には、ワイヤ18は上記軸部1と上記継手4の中空内を前後方向に貫通し、その前端は図8に示すようにスライダ8に連結される。また、後端は軸部1の中空に連通するように基部3に形成された貫通孔を後方に貫通し長さ調整具21に連結される。  As shown in FIGS. 1 to 5, the blade opening / closing operation unit 15 includes an opening /closing operation lever 15 a and awire 18 that is a transmission wire that transmits the movement of the opening /closing operation lever 15 a to theblades 2 a and 2 b. The opening /closing operation lever 15 a is held on thebase 3 via afulcrum pin 19 so that it can be pulled by a finger of the hand holding thehandle 14, and is similarly attached to thebase 3 by acompression coil spring 32 that is an elastic body embedded in thebase 3. It is always urged forward through the embeddedplunger 33. Thewire 18 is stretched between theslider 8 behind theblades 2a and 2b and the opening /closing operation lever 15a so as to be able to be transmitted. Specifically, thewire 18 passes through the hollow portion of the shaft portion 1 and the joint 4 in the front-rear direction, and the front end thereof is connected to theslider 8 as shown in FIG. Further, the rear end passes through a through-hole formed in thebase portion 3 so as to communicate with the hollow of the shaft portion 1 and is connected to thelength adjuster 21.

長さ調整具21は、具体的にはコレットチャックであり、基部3の後端にて貫通孔内に挿入され回動可能に保持されるコレット21aと、コレット21aの外周に螺合するナット21bとを具備する。コレット21aには図示しない複数個のすり割り溝が形成され、ナット21bの回転により縮径するようになっている。ワイヤ18をコレット21aに通しブレード2a,2bの開閉に都合のよい長さに調整した後、ナット21bを回することによりコレット21aでワイヤ18を締め付け固定することができる。  Thelength adjuster 21 is specifically a collet chuck, which is inserted into the through hole at the rear end of thebase 3 and rotatably held, and anut 21b that is screwed onto the outer periphery of thecollet 21a. It comprises. A plurality of slits (not shown) are formed in thecollet 21a, and the diameter is reduced by the rotation of thenut 21b. After thewire 18 is passed through thecollet 21a and adjusted to a length convenient for opening and closing theblades 2a and 2b, thewire 18 can be fastened and fixed by thecollet 21a by turning thenut 21b.

ワイヤ18と開閉操作レバー15aとは直結してもよいが、この実施の形態では図1に示すように凹凸部の係合を介して動力的に連結される。すなわち、環状凹溝23aを有するパイプ23がワイヤ18に固着され、このパイプ23及びワイヤ18が開閉操作レバー15aに形成された通孔22を前後方向に貫通する。そして、開閉操作レバー15aの通孔22内に形成された突起22aがパイプ23の環状凹溝23aに嵌り込んでいる。  Although thewire 18 and the opening /closing operation lever 15a may be directly connected, in this embodiment, as shown in FIG. That is, thepipe 23 having theannular groove 23a is fixed to thewire 18, and thepipe 23 and thewire 18 penetrate the throughhole 22 formed in the opening /closing operation lever 15a in the front-rear direction. Aprotrusion 22 a formed in the throughhole 22 of the opening /closing operation lever 15 a is fitted into theannular groove 23 a of thepipe 23.

これにより、開閉操作レバー15aは上記圧縮コイルバネ32によりプランジャ33を介して背後から押されて図1中実線で示す位置に停止し、その突起22aが環状凹溝23aを介してパイプ23及びワイヤ18を前方にスライドさせる。その結果、ブレード2a,2bが図1及び図8(D)に示すように開いた状態となる。そこで、開閉操作レバー15aが圧縮コイルバネ32の付勢力に抗して引かれると、開閉操作レバー15aの突起22aが環状凹溝23aを介してパイプ23及びワイヤ18を後方にスライドさせ、その結果図8(C)〜(A)のごとく、ブレード2a,2bが閉じる。  As a result, the opening /closing operation lever 15a is pushed from behind via theplunger 33 by thecompression coil spring 32 and stops at the position indicated by the solid line in FIG. 1, and theprojection 22a is connected to thepipe 23 and thewire 18 via theannular groove 23a. Slide forward. As a result, theblades 2a and 2b are opened as shown in FIGS. 1 and 8D. Therefore, when the opening /closing operation lever 15a is pulled against the urging force of thecompression coil spring 32, theprotrusion 22a of the opening /closing operation lever 15a slides thepipe 23 and thewire 18 backward through theannular groove 23a, and as a result, FIG. Theblades 2a and 2b are closed as in 8 (C) to (A).

ブレード回転操作部16は、図1乃至図5に示すように、回転操作ダイアル16aを備える。回転操作ダイアル16aは、上記基部3に回動可能に連結されたコレット21aに固着され、上記ハンドル14を持つ手の指で回転操作ダイアル16aを回すと、ワイヤ18が軸回りに回転する。上述のごとくワイヤ18の先端はスライダ8を介しブレード2a,2bのアーム7に連結されているので、回転操作ダイアル16aの回転に伴いブレード2a,2bも軸回りに回転する。  The bladerotation operation unit 16 includes arotation operation dial 16a as shown in FIGS. Therotation operation dial 16a is fixed to acollet 21a rotatably connected to thebase 3, and when therotation operation dial 16a is turned with a finger of the hand having thehandle 14, thewire 18 rotates about its axis. As described above, since the tip of thewire 18 is connected to thearm 7 of theblades 2a and 2b via theslider 8, theblades 2a and 2b also rotate around the axis as therotary operation dial 16a rotates.

ブレード首振り操作部17は、図1、図2、図6及び図7に示すように、首振り操作ダイアル17aと、首振り操作ダイアル17aの動きを処理部2に伝達する伝動用線体であるケーブル26a,26bとを具備する。首振り操作ダイアル17aは基部3における開閉操作レバー15aよりもやや前方に支点軸27を介し軸支される。図1及び図2に示すように、首振り操作ダイアル17aの下方の基部3内には、左右二つの滑り子25a,25bが前後方向にスライド自在に配置され、各滑り子25a,25bにケーブル26a,26bの後端がそれぞれ連結される。また、各滑り子25a,25bにはローラ状のカムフォロア31が取り付けられ、操作ダイアル17aにはカムフォロア31が入り込む空洞30が形成され、空洞30内に偏心カム30aが設けられる。偏心カム30aは図2に示すように初期位置において左右の両カムフォロア31に左右対称的に接触する。ケーブル26a,26bは上記ワイヤ18を間に挟むように軸部1内を前方に貫通して伸び、さらに継手4の溝4g内を前方に貫通して伸び、それぞれの前端がホルダ5に連結される。  As shown in FIGS. 1, 2, 6, and 7, the bladeswing operation unit 17 is aswing operation dial 17a and a transmission wire that transmits the movement of theswing operation dial 17a to theprocessing unit 2. Acertain cable 26a, 26b is provided. Theswing operation dial 17 a is pivotally supported via afulcrum shaft 27 slightly forward of the opening /closing operation lever 15 a in thebase 3. As shown in FIGS. 1 and 2, twosliders 25a and 25b are slidably arranged in the front and rear direction in thebase 3 below theswing operation dial 17a, and a cable is connected to eachslider 25a and 25b. The rear ends of 26a and 26b are connected to each other. A roller-like cam follower 31 is attached to eachslider 25a, 25b, and acavity 30 into which thecam follower 31 enters is formed in theoperation dial 17a, and aneccentric cam 30a is provided in thecavity 30. As shown in FIG. 2, theeccentric cam 30a symmetrically contacts the left andright cam followers 31 at the initial position. Thecables 26a and 26b extend forward through the shaft portion 1 so as to sandwich thewire 18 therebetween, and further extend forward through thegroove 4g of the joint 4, and their front ends are connected to theholder 5. The

これにより、上記ハンドル14を持つ手の指で首振り操作ダイアル17aを回すと、偏心カム30aとカムフォロア31との摺接により左右の滑り子25a,25bが基部3内を互いに前後逆向きにスライドし、これに伴い左右のケーブル26a,26bが軸部1及び継手4内を互いに逆向きにスライドする。その結果、図7(B)に示すように継手4が平面上で屈曲し、首振り操作ダイアル17aの回転方向に応じて処理部2のブレード2a,2bが継手4と共に首を振る。  As a result, when theswing operation dial 17a is turned with the finger of the hand having thehandle 14, the left andright sliders 25a and 25b slide in thebase 3 in the direction opposite to each other by sliding contact between theeccentric cam 30a and thecam follower 31. Accordingly, the left andright cables 26a, 26b slide in the shaft portion 1 and the joint 4 in opposite directions. As a result, the joint 4 is bent on a plane as shown in FIG. 7B, and theblades 2a and 2b of theprocessing unit 2 swing the head together with the joint 4 in accordance with the rotation direction of theswing operation dial 17a.

また、首振り操作ダイアル17aの外周面には多数の凹溝20が所定のピッチで形成され、基部3内にはいずれかの凹溝20に嵌り込む凸片20aが設けられる。凸片20aは図示しないスプリングにより常時凹溝側に付勢される。凸片20aと凹溝20との係合により、ブレード2a,2b及び継手4は所望の首振り位置に保持される。  In addition, a large number ofconcave grooves 20 are formed at a predetermined pitch on the outer peripheral surface of theswing operation dial 17a, and aconvex piece 20a that fits into any one of theconcave grooves 20 is provided in thebase 3. Theconvex piece 20a is always urged toward the concave groove by a spring (not shown). Theblades 2a and 2b and the joint 4 are held at a desired swinging position by the engagement between theconvex piece 20a and theconcave groove 20.

次に、上記構成の医療用処置具の作用について説明する。  Next, the operation of the medical treatment tool having the above configuration will be described.

図10に示すように、例えばこの治療用処置具を下垂体の腫瘍Aの摘出に使用するものとする。まず、図示しない鼻鏡を鼻孔Bから下垂体の方へと挿入し、鼻鏡をガイドとして内視鏡Cを下垂体へと挿入し、内視鏡Cにより患部を照明する。  As shown in FIG. 10, for example, this therapeutic treatment tool is used for extraction of tumor A of the pituitary gland. First, a nasal mirror (not shown) is inserted from the nostril B toward the pituitary gland, the endoscope C is inserted into the pituitary gland using the nasal mirror as a guide, and the affected part is illuminated by the endoscope C.

術者が医療用処置具のハンドル14を持ち、開閉操作レバー15aを図示しない弾性体の付勢力に抗して後方へと引く。これにより、ワイヤ18が軸部1及び継手4の内部を後方にスライドし図8(D)〜(A)のごとくブレード2a,2bを閉動作させる。  The operator holds thehandle 14 of the medical treatment tool and pulls the opening /closing operation lever 15a backward against the urging force of an elastic body (not shown). As a result, thewire 18 slides backward in the shaft portion 1 and the joint 4 to close theblades 2a and 2b as shown in FIGS.

鼻鏡をガイドとしてこの閉じたブレード2a,2bから軸部1を鼻孔B内に挿入する。ブレード2a,2bが下垂体の腫瘍Aに到達すると開閉操作レバー15aを解放する。弾性体の復元作用により開閉操作レバー15aが元の位置に復帰し、これに伴い図8(A)のごとくブレード2a,2bが開く。  The shaft portion 1 is inserted into the nostril B through theclosed blades 2a and 2b using a nasal mirror as a guide. When theblades 2a and 2b reach the tumor A of the pituitary gland, the opening /closing operation lever 15a is released. The opening /closing operation lever 15a is returned to the original position by the restoring action of the elastic body, and theblades 2a and 2b are opened as shown in FIG.

続いて、回転操作ダイアル16aや首振り操作ダイアル17aを、ハンドル14を持つ手の指で操作し、ブレード2a,2bを軸回りに回転させ、或いは首振り動作させて、ブレード2a,2bを腫瘍Aに接近させる。その際、ワイヤ18やケーブル26a,26bは軸部1及び継手4の内部をスライドする。  Subsequently, therotary operation dial 16a and theswing operation dial 17a are operated with the fingers of the hand having thehandle 14, and theblades 2a and 2b are rotated around the axis or are swung to move theblades 2a and 2b to the tumor. Approach A. At that time, thewire 18 and thecables 26 a and 26 b slide inside the shaft portion 1 and thejoint 4.

そこで、開閉操作レバー15aを引き操作し、図8(D)〜(A)のごとくブレード2a,2bを閉動作させ、ブレード2a,2bで腫瘍Aを掴み、首振り操作ダイアル17aを逆向きに操作してブレード2a,2bを軸部1の延長線上に戻した後、軸部1を鼻鏡外に引き出す。これにより、腫瘍Aが体外に除去される。  Accordingly, the opening /closing operation lever 15a is pulled to close theblades 2a and 2b as shown in FIGS. 8D to 8A, and the tumor A is grasped by theblades 2a and 2b, and the swingingoperation dial 17a is reversed. After operating theblades 2a and 2b back on the extension line of the shaft portion 1, the shaft portion 1 is pulled out of the nasal mirror. Thereby, the tumor A is removed from the body.

上記操作を腫瘍Aの大きさに応じて繰り返し行い、腫瘍Aの全体を体外に摘出する。  The above operation is repeated according to the size of the tumor A, and the entire tumor A is removed from the body.

このように、軸部1を患者の体内に挿入した場合に基部3の首振り操作部17を操作して継手4の箇所で処理部2を首振り動作させることができるので、患者の体内における処理部2の突き当りの周辺をある程度の広がりを持って処置することができる。また、継手4は細くかつ短いので小さい曲率半径で屈曲可能であり、従って下垂体の腫瘍Aのごとき小さい患部に対してもアプローチしやすい。  In this way, when the shaft portion 1 is inserted into the patient's body, the swingingoperation portion 17 of thebase portion 3 can be operated to swing theprocessing portion 2 at the joint 4 location. The vicinity of the end of theprocessing unit 2 can be treated with a certain extent. Further, since the joint 4 is thin and short, the joint 4 can be bent with a small radius of curvature, and therefore, it is easy to approach even a small affected area such as the tumor A of the pituitary gland.

なお、本発明は上記実施の形態に限定されるものではなく、例えば上記実施の形態では内視鏡手術用の鉗子として説明したが、鋏、キュレット、吸引管等の医療用処置具についても適用可能である。鋏、キュレット、吸引管の場合は処理部がそれぞれ一対の刃、キュレット片、吸引口として構成される。吸引管として使用する場合は、軸部等に挿入されるワイヤに代えて吸引パイプが挿入される。  The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the forceps for endoscopic surgery has been described. However, the present invention is also applicable to medical treatment instruments such as scissors, curettes, and suction tubes. Is possible. In the case of a scissors, a curette, and a suction tube, the processing units are each configured as a pair of blades, a curette piece, and a suction port. When used as a suction tube, a suction pipe is inserted in place of the wire inserted into the shaft or the like.

本発明に係る医療用処置具である鉗子の正面図である。It is a front view of forceps which is a medical treatment tool concerning the present invention.図1に示す鉗子の平面図である。It is a top view of the forceps shown in FIG.図1に示す鉗子の底面図である。It is a bottom view of the forceps shown in FIG.図1に示す鉗子の左側面図である。It is a left view of the forceps shown in FIG.図1に示す鉗子の右側面図である。It is a right view of the forceps shown in FIG.図1に示す鉗子の処理部及び継手の拡大正面図である。It is an enlarged front view of the process part and joint of a forceps shown in FIG.(A)は図1に示す鉗子の処理部近傍の拡大正面図、(B)は継手が屈曲し処理部が首を振った状態を示す拡大正面図である。(A) is an enlarged front view of the vicinity of the processing portion of the forceps shown in FIG. 1, and (B) is an enlarged front view showing a state in which the joint is bent and the processing portion swings.図7(A)中、VIII−VIII線矢視断面図であり、(A)〜(D)は処理部であるブレードが徐々に開く過程を示す。FIG. 7A is a cross-sectional view taken along line VIII-VIII in FIG. 7A, and (A) to (D) show a process of gradually opening a blade as a processing unit.継手を示し、(A)は平面図、(B)は正面図、(C)は(B)図中C−C線矢視断面図、(D)は(B)図中D−D線矢視断面図、(E)は右側面図である。A joint is shown, (A) is a top view, (B) is a front view, (C) is a cross-sectional view taken along line CC in (B), and (D) is a line DD in FIG. A sectional view, (E) is a right side view.図1に示す鉗子を使用した手術例を示す説明図である。It is explanatory drawing which shows the example of a surgery using the forceps shown in FIG.

符号の説明Explanation of symbols

1…軸部
2…処理部
3…基部
4…継手
4a,4b,4c,4d…短管
4e…可撓片
4f…切込
4g…溝
10…コイルスプリング
26a,26b…ケーブル
DESCRIPTION OF SYMBOLS 1 ...Shaft part 2 ... Processingpart 3 ...Base part 4 ... Joint 4a, 4b, 4c, 4d ...Short pipe 4e ...Flexible piece 4f ...Notch 4g ...Groove 10 ...Coil spring 26a, 26b ... Cable

Claims (4)

Translated fromJapanese
軸部の先端と後端にそれぞれ処理部と基部を備え、処理部が軸部に対し継手を介して連結された医療用処置具において、上記継手が、複数個の短管と、短管同士をそれらの共通軸を挟む二本の母線上で連結する可撓片とを有し、この継手を介し処理部が軸部の先端で首振り可能とされたことを特徴とする医療用処置具。  In the medical treatment instrument that includes a processing portion and a base portion at the front end and the rear end of the shaft portion, respectively, and the processing portion is connected to the shaft portion via a joint, the joint includes a plurality of short tubes and short tubes And a flexible piece for connecting the two shafts across the common shaft, and the treatment portion can be swung at the tip of the shaft portion via this joint. . 請求項1に記載の医療用処置具において、弾性を有する金属管の両側面にそれぞれ複数箇所にわたって切込を入れることにより、上記継手の短管及び可撓片が形成されたことを特徴とする医療用処置具。  The medical treatment instrument according to claim 1, wherein the short pipe and the flexible piece of the joint are formed by making incisions in both sides of the elastic metal pipe at a plurality of locations. Medical treatment tool. 請求項1又は請求項2に記載の医療用処置具において、上記継手の内壁面に、継手を屈曲操作する線体の通る溝が形成されたことを特徴とする医療用処置具。  The medical treatment instrument according to claim 1 or 2, wherein a groove through which a linear body for bending the joint is formed is formed on an inner wall surface of the joint. 請求項1乃至請求項3のいずれかに記載の医療用処置具において、上記継手の中空内にコイルスプリングが挿入されたことを特徴とする医療用処置具。  The medical treatment instrument according to any one of claims 1 to 3, wherein a coil spring is inserted into the hollow of the joint.
JP2004292433A2004-10-052004-10-05Medical treatment instrumentPendingJP2006102093A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JP2007307022A (en)*2006-05-172007-11-29Pentax Corp Endoscope pipe connection structure
JP2010075375A (en)*2008-09-252010-04-08Kanazawa UnivForceps
WO2013162229A1 (en)*2012-04-252013-10-31주식회사 고영테크놀러지Bendable end effector
KR101441341B1 (en)*2012-04-252014-09-17주식회사 고영테크놀러지Bending type end-effector
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JP2010075375A (en)*2008-09-252010-04-08Kanazawa UnivForceps
WO2013162229A1 (en)*2012-04-252013-10-31주식회사 고영테크놀러지Bendable end effector
KR101441341B1 (en)*2012-04-252014-09-17주식회사 고영테크놀러지Bending type end-effector
WO2017043128A1 (en)*2015-09-112017-03-16オリンパス株式会社Medical treatment instrument
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KR102043627B1 (en)*2019-03-182019-11-12맥스폴 주식회사Flexible dissection apparatus
JP2022047656A (en)*2020-09-142022-03-25株式会社Lake・E2 Endoscopic treatment tool
JP7482592B2 (en)2020-09-142024-05-14レイクR&D株式会社 Endoscopic treatment tools

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