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JP3129928U - Horizontal retractor - Google Patents

Horizontal retractor Download PDF

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Publication number
JP3129928U
JP3129928U JP2006010360U JP2006010360U JP3129928U JP 3129928 U JP3129928 U JP 3129928U JP 2006010360 U JP2006010360 U JP 2006010360U JP 2006010360 U JP2006010360 U JP 2006010360U JP 3129928 U JP3129928 U JP 3129928U
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wedge
gripping portion
shaped member
gripping
retractor
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知純 安藤
良樹 澤田
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SHIMIZUTECH CO.,LTD.
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SHIMIZUTECH CO.,LTD.
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Abstract

【課題】把持部(アーム部)の先端側を開いた状態に保持するためのレバー型のロック機構の操作を不要とするような水平開創器を提供する。
【解決手段】本考案の水平開創器は、把持部を閉じることによって先端部が開く鋏形の開創器であって、把持部の連結部材に弾性体で付勢された楔状部材を備え、前記楔状部材の付勢力により前記把持部が閉じるように前記把持部の形状側面が形成されている。把持部の連結部材に弾性体で付勢された楔状部材を備えることで、術者は、把持部(アーム部)の先端側を開いた状態に保持するために特別な操作は必要としない。
【選択図】図4−1
A horizontal retractor that eliminates the need to operate a lever-type locking mechanism for holding the distal end side of a gripping part (arm part) in an open state is provided.
A horizontal retractor according to the present invention is a bowl-shaped retractor whose tip is opened by closing a gripping portion, and includes a wedge-shaped member biased by an elastic body to a connecting member of the gripping portion, The shape side surface of the grip portion is formed so that the grip portion is closed by the urging force of the wedge-shaped member. By providing the connecting member of the gripping portion with a wedge-shaped member urged by an elastic body, the operator does not need a special operation to hold the distal end side of the gripping portion (arm portion) open.
[Selection] Figure 4-1

Description

本考案は、手術のために切開した切開部位を広げた状態に保持する開創器に関するものである。   The present invention relates to a retractor that holds an incision site opened for surgery in an expanded state.

従来、患者の脊椎後方を切開し、この切開部位を広げた状態に保持する開創器として、図5に示すように、切開部位を押し広げる際に当該切開部位を係止保持するためのブレードを先端側に備えた一対の把持部(アーム部)を、連結部材(ヒンジ部)を介して開閉可能とした開創器が知られている(特許文献1)。
この開創器は、一対の把持部(アーム部)の開閉操作を行うために、一対のアームにそれぞれ把持部(ハンドル部)形成されている。
Conventionally, as a retractor for incising the back of a patient's spine and holding the incision site in an expanded state, a blade for locking and holding the incision site when the incision site is expanded as shown in FIG. A retractor is known in which a pair of gripping portions (arm portions) provided on the distal end side can be opened and closed via a connecting member (hinge portion) (Patent Document 1).
In this retractor, in order to open and close a pair of gripping portions (arm portions), gripping portions (handle portions) are formed on the pair of arms, respectively.

この従来の開創器は、把持部(ハンドル部)を閉じるように操作すると、把持部(アーム部)の先端側が開くように、連結部材(ヒンジ部)を中心として回動する。そして、把持部(アーム部)の先端側を開いた状態に保持するために、把持部(ハンドル部)の連結部材(ヒンジ部)に近接した位置に、把持部(ハンドル部)を不動状態にするための固定可能のレバー型のロック機構が設けられている。   When this conventional retractor is operated so as to close the gripping part (handle part), it rotates about the connecting member (hinge part) so that the tip side of the gripping part (arm part) opens. And in order to hold | maintain the front end side of a holding part (arm part) in the open state, the holding part (handle part) is made into a stationary state in the position close | similar to the connection member (hinge part) of a holding part (handle part). A lockable lever-type locking mechanism is provided.

上記レバー型のロック機構は、連結部材(ヒンジ部)を中心とした円弧状のプレートを一方の把持部(ハンドル部)に固定し、このプレートの外周側に形成したラチエット歯部に先端部が係止自在のラチエット爪部材を他方の把持部(ハンドル部)に回動可能に設けている。
そして、ラチエット爪部材が、ラチエット歯部に常に係合するように付勢する板ばねを他方の把持部(ハンドル部)に設けている。
The lever-type locking mechanism fixes an arc-shaped plate centering on a connecting member (hinge part) to one gripping part (handle part), and has a tip part on a ratchet tooth part formed on the outer peripheral side of the plate. A latching claw member that can be locked is rotatably provided on the other gripping portion (handle portion).
And the leaf | plate spring which urges | biases so that a ratchet pawl member may always engage with a ratchet tooth part is provided in the other holding part (handle part).

特開2005−028001号公報JP 2005-028001 A

従来の開創器は、上記レバー型のロック機構により把持部(アーム部)の先端側を開いた状態に保持するのであるが、かかるレバー型のロック機構の操作が術者にとって操作性がよいものではないといった問題があった。   The conventional retractor is such that the tip side of the gripping part (arm part) is held open by the lever-type locking mechanism, and the operation of the lever-type locking mechanism is easy for the operator. There was a problem that it was not.

上記問題点に鑑み、本考案の水平開創器は、把持部(アーム部)の先端側を開いた状態に保持するためのレバー型のロック機構の操作を不要とするような水平開創器を提供することを目的とする。   In view of the above problems, the horizontal retractor of the present invention provides a horizontal retractor that does not require the operation of a lever-type lock mechanism for holding the gripping portion (arm portion) in the open state. The purpose is to do.

上記目的を達成するため、本考案の水平開創器は、把持部を閉じることによって先端部が開く鋏形の開創器であって、把持部の連結部材に弾性体で付勢された楔状部材を備え、前記楔状部材の付勢力により前記把持部が閉じるように前記把持部の形状側面が形成されている構成とされたことを特徴としたものである。   In order to achieve the above object, the horizontal retractor of the present invention is a bowl-shaped retractor whose tip is opened by closing the gripping portion, and a wedge-shaped member urged by an elastic body to the connection member of the gripping portion. And the gripping portion has a shape side surface formed so that the gripping portion is closed by the urging force of the wedge-shaped member.

把持部の連結部材に弾性体で付勢された楔状部材を備えることで、術者は、把持部(アーム部)の先端側を開いた状態に保持するために特別な操作は必要としない。
すなわち、一対の把持部の連結部材に取り付けられた楔状部材が、弾性体で付勢されることにより、一対の把持部の間に楔のように食い込まれていく。一対の把持部の間に楔のように食い込まれていくに従い、一対の把持部が閉じるように把持部の形状側面が形成されている。本発明の水平開創器自体が、把持部を閉じることによって先端部が開く鋏形の構成となっているため、一対の把持部の間に楔のように食い込まれていくに従い、先端部が開いていくのである。
ここで、上記弾性体は、一軸方向に付勢力が作用するバネであることが好ましい。
By providing the connecting member of the gripping portion with a wedge-shaped member urged by an elastic body, the operator does not need a special operation to hold the distal end side of the gripping portion (arm portion) open.
That is, the wedge-shaped member attached to the connecting member of the pair of gripping portions is urged by the elastic body so that it is bitten like a wedge between the pair of gripping portions. The shape side surface of the gripping portion is formed so that the pair of gripping portions are closed as the pair of gripping portions are bitten like a wedge. Since the horizontal retractor itself of the present invention has a hook-shaped configuration that opens the tip by closing the gripping portion, the tip opens as the wedge grips between the pair of gripping portions. It goes on.
Here, the elastic body is preferably a spring on which a biasing force acts in a uniaxial direction.

また、上記の水平開創器における楔状部材と把持部の接面には、鉤状の歯形が形成され、鉤状の歯形で楔状部材と把持部とが噛み合うことにより、先端部の開度を一定角度に維持する構成とされたことを特徴とする。
水平開創器は皮膚切開部を一定の幅に拡げてその状態を保持するのであるが、状態を保持するために一定の力が必要である。先端部の開度を一定角度に維持を確実に行うべく、上記弾性体の付勢力に加えて、鉤状の歯形で楔状部材と把持部とが噛み合わせることにしたものである。
In addition, a hook-shaped tooth profile is formed on the contact surface between the wedge-shaped member and the gripping portion in the horizontal retractor, and the opening degree of the tip portion is kept constant by engaging the wedge-shaped member and the gripping portion with the hook-shaped tooth profile. It is characterized by being configured to maintain an angle.
The horizontal retractor spreads the skin incision part to a certain width and maintains the state, but a certain force is required to maintain the state. In order to reliably maintain the opening of the tip at a constant angle, in addition to the urging force of the elastic body, the wedge-shaped member and the gripping part mesh with each other with a hook-shaped tooth profile.

また、上記の水平開創器における楔状部材と把持部の接面には、楔状部材と把持部の接面の1面のみに鉤状の歯形が形成され、他面は滑らかな形状に形成され、前記鉤状の歯形で前記楔状部材と把持部とが噛み合うことにより、前記先端部の開度を一定角度に維持する構成とされている。
これは、楔状部材と把持部の接面の1面のみに鉤状の歯形が形成され、他面は滑らかな形状に形成されることで、保持状態の解除操作をスムーズにすることができるのである。
すなわち、先端部の開度を一定角度に維持するために、弾性体の付勢力に加わっている上に更に、鉤状の歯形で楔状部材と把持部とが噛み合わせることにしているため、楔状部材と把持部の接面の1面のみの噛み合わせで十分に目的を達成できるからである。
また、1面のみに鉤状の歯形が形成することで、加工コストを削減できる。
Further, on the contact surface between the wedge-shaped member and the gripping portion in the horizontal retractor, a hook-like tooth shape is formed on only one surface of the wedge-shaped member and the gripping portion, and the other surface is formed in a smooth shape. The wedge-shaped member and the gripping portion are engaged with each other by the hook-shaped tooth shape, so that the opening degree of the tip portion is maintained at a constant angle.
This is because a hook-like tooth profile is formed on only one of the contact surfaces of the wedge-shaped member and the gripping portion, and the other surface is formed in a smooth shape, so that the releasing operation of the holding state can be made smooth. is there.
In other words, in order to maintain the opening degree of the tip at a constant angle, the wedge-shaped member and the gripping portion are further meshed with each other in addition to the biasing force of the elastic body. This is because the object can be sufficiently achieved by meshing only one of the contact surfaces of the member and the grip portion.
In addition, since the bowl-shaped tooth profile is formed on only one surface, the processing cost can be reduced.

本考案に係る水平開創器は、把持部の連結部材に弾性体で付勢された楔状部材を備え、楔状部材の付勢力により把持部が閉じるように、把持部の形状側面が形成されていることで、把持部(アーム部)の先端側を開いた状態に保持するためのレバー型のロック機構の操作を不要とできるといった効果を有する。
その結果、術者に対する開創器の操作負担が軽減され、手技に集中できるといった効果がある。
A horizontal retractor according to the present invention includes a wedge-shaped member urged by an elastic body to a connecting member of a gripping portion, and a shape side surface of the gripping portion is formed so that the gripping portion is closed by a biasing force of the wedge-shaped member. Thus, there is an effect that the operation of a lever-type lock mechanism for holding the tip side of the gripping part (arm part) in an open state can be made unnecessary.
As a result, the burden of operating the retractor on the surgeon is reduced, and there is an effect that the operator can concentrate on the procedure.

以下、本考案の実施例について、以下、図面を参照しながら詳細に説明していく。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1は、実施例1の水平開創器の概略構成図を示している。実施例1の水平開創器は、一対の先端部(21a,21b)とアーム部(22a,22b)と把持部(10a,10b)とハンドル部(11a,11b)が、連結部材30によって連結されている。アーム部22aと把持部10aとハンドル部11aは、一体整形されており、先端部21aと関節部23aを介して繋がっている。把持部(10a,10b)を閉じることによって、先端部(21a,21b)とアーム部(22a,22b)が開く鋏形の開創器である。
把持部10aは、ビス(32a,32b)を介して連結部材30と回動自在に繋がっている。また、同様に、把持部10bは、ビス(33a,33b)を介して連結部材30と回動自在に繋がっている。
FIG. 1 shows a schematic configuration diagram of a horizontal retractor according to the first embodiment. In the horizontal retractor according to the first embodiment, the pair of tip portions (21a, 21b), the arm portions (22a, 22b), the grip portions (10a, 10b), and the handle portions (11a, 11b) are connected by the connecting member 30. ing. The arm portion 22a, the grip portion 10a, and the handle portion 11a are integrally formed, and are connected via the distal end portion 21a and the joint portion 23a. By closing the gripping portions (10a, 10b), the distal end portions (21a, 21b) and the arm portions (22a, 22b) open up.
The grip portion 10a is rotatably connected to the connecting member 30 via screws (32a, 32b). Similarly, the grip portion 10b is rotatably connected to the connecting member 30 via screws (33a, 33b).

術者はハンドル部(11a,11b)に親指,人差し指もしくは中指を差込み、両指を近づけることにより、把持部(10a,10b)を閉じる。
これにより、把持部10aは、ビス(32a,32b)を回転軸(支点)として、また、把持部10bは、ビス(33a,33b)を回転軸(支点)として回転し、先端部(21a,21b)とアーム部(22a、22b)の幅が開大する。
The surgeon inserts the thumb, index finger or middle finger into the handle portions (11a, 11b), and closes the grip portions (10a, 10b) by bringing both fingers close to each other.
As a result, the gripping part 10a rotates with the screws (32a, 32b) as the rotation axis (fulcrum), and the gripping part 10b rotates with the screws (33a, 33b) as the rotation axis (fulcrum). 21b) and arm portions (22a, 22b) are widened.

また、ブレードの装着柱を装着できるように、装着受け穴(24a,24b)が形成されている。患者の状態、手技の内容におってブレードを適宜取替可能なように構成している。ここで、関節部(23a,23b)は、先端部(21a,21b)を、把持部(10a,10b)の操作による動作方向と垂直な方向で、回動される機能を有する。これは、プレートを装着受け穴(24a,24b)に取り付けた場合に、プレートの角度を自由に調整できるためである。   Also, mounting receiving holes (24a, 24b) are formed so that the mounting columns of the blade can be mounted. The blade can be appropriately replaced depending on the patient's condition and the contents of the procedure. Here, the joint portions (23a, 23b) have a function of rotating the tip portions (21a, 21b) in a direction perpendicular to the operation direction by the operation of the grip portions (10a, 10b). This is because the angle of the plate can be freely adjusted when the plate is attached to the mounting receiving holes (24a, 24b).

また、解除ピン(31a,31b)は、後述する楔状部材39の位置を初期位置に戻すためのものである。   The release pins (31a, 31b) are for returning the position of a wedge-shaped member 39 described later to the initial position.

次に、図2−1,図2−2および図3を参照して、実施例1の水平開創器の把持部の動作を説明する。
上述したように、把持部10aは、ビス(32a,32b)を回転軸(支点)として、また、把持部10bは、ビス(33a,33b)を回転軸(支点)として回転し、先端部(21a,21b)とアーム部(22a、22b)の幅が開大する。
この時、連結部材30に取り付けられたコイルバネ37に付勢された楔状部材39によって、把持部(10a,10b)の隙間が押し拡げられる。コイルバネ37は、ビス(34a,35a)と連結板36によって固定されている。
Next, with reference to FIG. 2-1, FIG. 2-2, and FIG. 3, operation | movement of the holding part of the horizontal retractor of Example 1 is demonstrated.
As described above, the gripping portion 10a rotates with the screw (32a, 32b) as a rotation shaft (fulcrum), and the gripping portion 10b rotates with the screw (33a, 33b) as a rotation shaft (fulcrum). 21a, 21b) and arm portions (22a, 22b) are widened.
At this time, the gap between the grip portions (10a, 10b) is expanded by the wedge-shaped member 39 biased by the coil spring 37 attached to the connecting member 30. The coil spring 37 is fixed by screws (34a, 35a) and a connecting plate 36.

図3に示されるように、コイルバネ37で付勢された楔状部材39が、図3(a)から図3(b)の如く、図中で右側に移動することで、把持部(10a,10b)の隙間が押し拡げられる。把持部(10a,10b)の隙間が押し拡げられると、ビス(32a,33a)を回転中心(支点)として回転し、把持部(10a,10b)は閉じ、一方、先端部(21a,21b)は開く。なお、図3においては、把持部10b,先端部21bおよびビス33aは、記載を省略している。   As shown in FIG. 3, the wedge-shaped member 39 biased by the coil spring 37 moves to the right side in the drawing as shown in FIG. 3A to FIG. ) Is widened. When the gap between the gripping portions (10a, 10b) is expanded, the screw (32a, 33a) rotates around the rotation center (fulcrum), and the gripping portions (10a, 10b) are closed, while the tip portions (21a, 21b) Will open. In FIG. 3, the gripping portion 10b, the tip portion 21b, and the screw 33a are not shown.

また、本実施例1の水平開創器における楔状部材と把持部の接面には、楔状部材と把持部の接面の1面のみに鉤状の歯形が形成され、他面は滑らかな形状に形成されている。図3において、楔状部材の1面39aと把持部の接面12aに鉤状の歯形が形成されている。
この鉤状の歯形で楔状部材39と把持部10aとが噛み合うことにより、先端部(21a,21b)の開度を一定角度に維持する構成とされている。
1面のみに鉤状の歯形が形成され、他面は滑らかな形状に形成されることで、解除ピンによる保持状態の解除操作をスムーズにすることができるのである。
In addition, the contact surface between the wedge-shaped member and the grip portion in the horizontal retractor of the first embodiment is formed with a bowl-shaped tooth profile on only one surface of the contact surface between the wedge-shaped member and the grip portion, and the other surface has a smooth shape. Is formed. In FIG. 3, a hook-shaped tooth profile is formed on one surface 39a of the wedge-shaped member and the contact surface 12a of the grip portion.
The wedge-shaped member 39 and the gripping portion 10a are engaged with each other with the hook-shaped tooth shape, so that the opening degree of the tip end portions (21a, 21b) is maintained at a constant angle.
A hook-like tooth profile is formed only on one surface, and the other surface is formed in a smooth shape, so that the release operation of the holding state by the release pin can be made smooth.

次に実施例2では、他の実施例の水平開創器を説明する。図4−1に実施例2の水平開創器の概略構成図を示す。
実施例2の水平開創器は、実施例1と同様に、一対の先端部(51a,51b)とアーム部(52a,52b)と把持部(40a,40b)とハンドル部(41a,41b)が、連結部材60によって連結されている。アーム部52aと把持部40aとハンドル部41aは、一体整形されており、先端部51aと関節部53aを介して繋がっている。把持部(40a,40b)を閉じることによって、先端部(51a,51b)とアーム部(52a,52b)が開く鋏形の開創器である。
把持部40aは、ビスを介し連結部材60と回動自在に繋がっている。一方、把持部40bは、連結部材60に固定されている。この点が実施例1とは異なる。実施例2は偏開閉型の水平開創器である。
Next, Example 2 demonstrates the horizontal retractor of another Example. FIG. 4A shows a schematic configuration diagram of the horizontal retractor of the second embodiment.
As in the first embodiment, the horizontal retractor of the second embodiment includes a pair of tip portions (51a, 51b), arm portions (52a, 52b), gripping portions (40a, 40b), and handle portions (41a, 41b). Are connected by a connecting member 60. The arm portion 52a, the gripping portion 40a, and the handle portion 41a are integrally formed, and are connected via the distal end portion 51a and the joint portion 53a. By closing the gripping portions (40a, 40b), the distal end portions (51a, 51b) and the arm portions (52a, 52b) open up.
The grip portion 40a is rotatably connected to the connecting member 60 via a screw. On the other hand, the gripping part 40 b is fixed to the connecting member 60. This point is different from the first embodiment. Example 2 is a partial retractable horizontal retractor.

次に、図4−1,図4−2および図4−3を参照して、実施例2の水平開創器の把持部の動作を説明する。
上述したように、把持部40aは、ビス62を回転軸(支点)として回転する。
この時、連結部材60に取り付けられたコイルバネ67に付勢された楔状部材69によって、把持部(40a,40b)の隙間が押し拡げられる。コイルバネ67は、連結部材60若しくは把持部40bに固定されている。
Next, with reference to FIG. 4-1, FIG. 4-2, and FIG. 4-3, operation | movement of the holding part of the horizontal retractor of Example 2 is demonstrated.
As described above, the gripping portion 40a rotates with the screw 62 as the rotation axis (fulcrum).
At this time, the gap between the grip portions (40a, 40b) is expanded by the wedge-shaped member 69 biased by the coil spring 67 attached to the connecting member 60. The coil spring 67 is fixed to the connecting member 60 or the grip portion 40b.

図4−3に示されるように、コイルバネ67で付勢された楔状部材69の形状は、把持部40aと接する片側のみ歯形形状をしている。図4−3には、歯型が16箇所形成されている。この歯型と階段状の部分と把持部40aの鉤部が面で接するように、図4−3のような形状としている。すなわち、1〜16の階段部分の段の長さと傾きを調整し、歯型と階段状の部分と把持部40aの鉤部が面で接することを実現した。これは、点で接するものと異なり、面で常に接することで面圧が減少し摩擦力が減り、それにより部材の耐久性が向上するのである。   As shown in FIG. 4C, the wedge-shaped member 69 biased by the coil spring 67 has a tooth shape only on one side in contact with the grip portion 40a. In FIG. 4-3, 16 tooth molds are formed. It has a shape as shown in FIG. 4-3 so that the tooth shape, the stepped portion and the collar portion of the gripping portion 40a are in contact with each other at the surface. That is, the step lengths and inclinations of the 1 to 16 staircase portions were adjusted, and the tooth mold, the staircase portion, and the collar portion of the gripping portion 40a were in contact with each other. This is different from the contact at a point, and the contact always at the surface reduces the surface pressure and reduces the frictional force, thereby improving the durability of the member.

上記の実施例2にかかる水平開創器の関節部(53a,53b)の動きをスムーズに行えるように、関節部に軟質性のパッキンを挟むことにした。すなわち、先端部(51a,51b)とアーム部(52a、52b)の間に、医療用の軟質性のパッキンを設けることにした。これにより関節部(53a,53b)の動きをスムーズにすることが可能となった。この関節部に軟質性のパッキンを挟み、動きをスムーズに行うことは本実施例2に限らず、実施例1あるいは更なる実施形態の場合においても可能で考える。   In order to smoothly move the joint portions (53a, 53b) of the horizontal retractor according to the second embodiment, a soft packing is sandwiched between the joint portions. That is, the medical soft packing is provided between the tip (51a, 51b) and the arm (52a, 52b). This makes it possible to smoothly move the joint portions (53a, 53b). It can be considered not only in the second embodiment but also in the case of the first embodiment or the further embodiment that the soft packing is sandwiched between the joint portions and the movement is performed smoothly.

本考案の水平開創器によれば、皮膚切開部位を広げた状態に保持できる医療器具を提供することができる。   According to the horizontal retractor of the present invention, it is possible to provide a medical instrument that can hold a skin incision site in an expanded state.

実施例1の水平開創器の概略構成図Schematic block diagram of the horizontal retractor of Example 1 実施例1の水平開創器の把持部の動作の説明図(1)Explanatory drawing (1) of operation | movement of the holding part of the horizontal retractor of Example 1. 実施例1の水平開創器の把持部の動作の説明図(2)Explanatory drawing (2) of operation | movement of the holding part of the horizontal retractor of Example 1. 実施例1の水平開創器の把持部の連結部材に弾性体で付勢された楔状部材の動作の説明図Explanatory drawing of operation | movement of the wedge-shaped member urged | biased by the elastic body to the connection member of the holding part of the horizontal retractor of Example 1. FIG. 実施例2の水平開創器の把持部の動作の説明図(1)Explanatory drawing (1) of operation | movement of the holding part of the horizontal retractor of Example 2. 実施例2の水平開創器の把持部の動作の説明図(2)Explanatory drawing (2) of operation | movement of the holding part of the horizontal retractor of Example 2. 実施例2の水平開創器の把持部の連結部材に弾性体で付勢された楔状部材の外形図Outline drawing of wedge-shaped member urged by elastic body to connecting member of gripping portion of horizontal retractor of embodiment 2 従来の開創器の概略構成図Schematic configuration diagram of conventional retractor

符号の説明Explanation of symbols

10a,10b,40a,40b 把持部
11a,11b,41a,41b ハンドル部
21a,21a,51a,51b 先端部
22a,22b,52a,52b アーム部
23a,23b,53a,53b 関節部
24a,24b,54a,54b プレート装着受け穴
30,60 連結部材
31a,31b 解除ピン
32a、32b、33a、33b,34a,34b,35a,35b,62 ビス
36 連結板
37,67 コイルバネ
38 ピン柱
39,69 楔状部材
39a,69a 楔状部材の歯形部
10a, 10b, 40a, 40b Grasping part 11a, 11b, 41a, 41b Handle part 21a, 21a, 51a, 51b Tip part 22a, 22b, 52a, 52b Arm part 23a, 23b, 53a, 53b Joint part 24a, 24b, 54a , 54b Plate mounting receiving hole 30, 60 Connecting member 31a, 31b Release pin 32a, 32b, 33a, 33b, 34a, 34b, 35a, 35b, 62 Screw 36 Connecting plate 37, 67 Coil spring 38 Pin column 39, 69 Wedge member 39a 69a Tooth profile portion of wedge-shaped member

Claims (4)

把持部を閉じることによって先端部が開く鋏形の開創器であって、把持部の連結部材に弾性体で付勢された楔状部材を備え、前記楔状部材の付勢力により前記把持部が閉じるように前記把持部の形状側面が形成されていることを特徴とする水平開創器。   A saddle-shaped retractor whose tip is opened by closing the gripping portion, comprising a wedge-shaped member biased by an elastic body on a connecting member of the gripping portion, and the gripping portion is closed by the biasing force of the wedge-shaped member The horizontal retractor is characterized in that a shape side surface of the grip portion is formed on the horizontal retractor. 前記楔状部材と把持部の接面に鉤状の歯形が形成され、前記鉤状の歯形で前記楔状部材と把持部とが噛み合うことにより、前記先端部の開度を一定角度に維持することを特徴とする請求項1に記載の水平開創器。   A hook-like tooth profile is formed on the contact surface between the wedge-shaped member and the gripping portion, and the wedge-shaped member and the gripping portion are engaged with each other by the hook-shaped tooth shape, thereby maintaining the opening degree of the tip portion at a constant angle. 2. A horizontal retractor according to claim 1 characterized in that: 前記楔状部材と把持部の接面の1面のみに鉤状の歯形が形成され、他面は滑らかな形状に形成され、前記鉤状の歯形で前記楔状部材と把持部とが噛み合うことにより、前記先端部の開度を一定角度に維持することを特徴とする請求項1に記載の水平開創器。   A hook-shaped tooth profile is formed on only one surface of the wedge-shaped member and the gripping portion, and the other surface is formed in a smooth shape, and the wedge-shaped member and the gripping portion mesh with each other by the hook-shaped tooth profile. The horizontal retractor according to claim 1, wherein the opening of the tip is maintained at a constant angle. 前記弾性体がバネであることを特徴とする請求項1に記載の水平開創器。   The horizontal retractor according to claim 1, wherein the elastic body is a spring.
JP2006010360U 2006-12-21 2006-12-21 Horizontal retractor Expired - Fee Related JP3129928U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544065A (en) * 2019-02-11 2020-08-18 华沙整形外科股份有限公司 Surgical retractors and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544065A (en) * 2019-02-11 2020-08-18 华沙整形外科股份有限公司 Surgical retractors and methods

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