JP2013220178A - Surgical instrument - Google Patents

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JP2013220178A
JP2013220178A JP2012092860A JP2012092860A JP2013220178A JP 2013220178 A JP2013220178 A JP 2013220178A JP 2012092860 A JP2012092860 A JP 2012092860A JP 2012092860 A JP2012092860 A JP 2012092860A JP 2013220178 A JP2013220178 A JP 2013220178A
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mirror surface
surgical instrument
head
head portion
shaft
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JP6087514B2 (en
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Masao Nakamura
正生 中村
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Abstract

PROBLEM TO BE SOLVED: To provide a surgical instrument capable of reducing risks of nerve damages when executing a surgery and improving work efficiency and safety even when performing a surgery of bilateral decompression through a unilateral approach or the like under direct vision or under a microscope.SOLUTION: A surgical instrument 1 includes: a grip part 2; a shaft 3 extended from the grip part 2; a curved head part 4 provided on a distal end of the shaft 3; and a planar mirror surface 5a provided on a part of the head part 4. Also, the mirror surface 5a is provided on a surface 4a on the inner side of the head part 4, and an outer circumferential part 5b of the mirror surface 5a is smoothly continued with a circumferential edge part 4c of the mirror surface 5a in the head part 4.

Description

本発明は、手術用器具に関し、特に、脊柱管狭窄症等の脊椎疾患に対する手術治療である「片側進入両側除圧術」等において使用される剥離子または鋭匙等の手術用器具に関するものである。   The present invention relates to a surgical instrument, and in particular, to a surgical instrument such as a peeler or sharp scissors used in "one-sided entry-side decompression" that is a surgical treatment for spinal diseases such as spinal stenosis. is there.

図２（ａ）に示すように、脊椎１０には神経１１（具体的には神経根１２や馬尾１３と呼ばれる神経の束）を通す脊柱管１４があり、この脊柱管１４は神経１１を保護するために骨で囲まれている。ところが、加齢等で骨が変形し、さらにその骨を支えている黄色靭帯１５が肥厚すると、脊柱管１４の中で神経１１が圧迫されることにより、痛みや痺れを起こす。この状態がいわゆる脊柱管狭窄症であり、神経根１２が圧迫された場合には腰から足にかけて痛みや痺れの症状が現れることが多く、馬尾１３が圧迫された場合には、足の痺れ、麻痺、脱力感に加え、***障害が起こる場合もある。   As shown in FIG. 2A, the spine 10 has a spinal canal 14 through which nerves 11 (specifically, nerve bundles called nerve roots 12 and tails 13) pass, and the spinal canal 14 protects the nerves 11. To be surrounded by bones. However, when the bone is deformed by aging or the like and the yellow ligament 15 supporting the bone is thickened, the nerve 11 is compressed in the spinal canal 14 to cause pain and numbness. This condition is so-called spinal canal stenosis. When the nerve root 12 is compressed, pain and numbness often appear from the waist to the foot. In addition to paralysis and weakness, excretion problems may occur.

脊柱管狭窄症の治療方法としては、薬物治療または理学療法等の保存的治療が行わることも多いが、それらの治療では病態が改善しない場合や、強い神経障害がある場合には、神経１１への圧迫を取り除く手術的治療が行われる。具体的には、図２（ｂ）に示すように、神経１１を圧迫しているもの（黄色靭帯１５または骨など）を直接取り除く「椎弓切除術」が行われている。なお、従来は、椎弓１６という神経１１の後方の骨を両側すべて切除する方法が一般的であったが、近年では、患者への負担を減らすため、椎弓１６の一部のみ（片側のみ）を切削する片側進入両側除圧術が広く行われるようになってきている。   As treatment methods for spinal canal stenosis, conservative treatment such as drug treatment or physical therapy is often performed. However, when the treatment does not improve the condition or there is a strong neuropathy, nerve 11 Surgical treatment is performed to relieve pressure. Specifically, as shown in FIG. 2B, a “laminectomy” is performed to directly remove the one (such as the yellow ligament 15 or the bone) that presses the nerve 11. Conventionally, a method of resecting all the bones behind the nerve 11 called the vertebral arch 16 has been generally used, but recently, in order to reduce the burden on the patient, only a part of the vertebral arch 16 (only one side) ) One-sided approach both-side decompression has been widely performed.

この片側進入両側除圧術は、概略以下の方法で行われる。患者に麻酔を行った後、腹臥位とし、当該高位後方の皮膚（図示しない）を数センチメートル程度、必要な長さだけ切開する。その後、症状の重い側の椎弓１６に付いている筋肉（図示しない）を剥がし、椎弓１６を露出させる。次に、椎弓１６の片側のみを手術用ドリル等（図示しない）で削るとともに、神経１１の後側にある黄色靭帯１５を一部切除し神経１１を確認する。そして、神経１１を圧迫している黄色靭帯１５またはその他の骨を切除する。最後に、神経１１への圧迫がなくなったことを確認した後、各層を閉じる。   This one-side entry both-side decompression is performed by the following method. After anesthetizing the patient, the patient is placed in the prone position, and the skin behind the high position (not shown) is incised by a required length of about several centimeters. Thereafter, the muscle (not shown) attached to the vertebra 16 on the severely symptom side is peeled off to expose the vertebra 16. Next, only one side of the vertebral arch 16 is shaved with a surgical drill or the like (not shown), and the yellow ligament 15 on the rear side of the nerve 11 is partially excised to confirm the nerve 11. Then, the yellow ligament 15 or other bone pressing the nerve 11 is excised. Finally, after confirming that the nerve 11 is no longer compressed, each layer is closed.

なお、黄色靭帯１５を切除する際には、図５に示すような剥離子または鋭匙等の手術用器具２０が用いられ、黄色靭帯１５が椎弓１６から剥離される。また、このような手術用器具２０は、作業の空間が確保されるように周囲の組織をよけるためにも用いられる。手術用器具２０は、使用者（医師）の手指で把持される把持部２１と、把持部２１から延出されたシャフト２２と、シャフト２２の先端に設けられ湾曲したヘッド部２３とから構成されている。   When the yellow ligament 15 is excised, a surgical instrument 20 such as a peeler or a sharp knife as shown in FIG. 5 is used, and the yellow ligament 15 is peeled from the vertebral arch 16. Such a surgical instrument 20 is also used for avoiding surrounding tissues so as to secure a work space. The surgical instrument 20 includes a grip portion 21 that is gripped by the fingers of a user (doctor), a shaft 22 that extends from the grip portion 21, and a curved head portion 23 that is provided at the tip of the shaft 22. ing.

しかし、手術用ドリルで削られた椎弓１６の開口部分１８は比較的小さいため、上記の片側進入両側除圧術を直視下または顕微鏡下で行う場合、黄色靭帯１５の一部を視認することが困難となっていた。具体的には、棘突起１７または上関節突起１９が障害となって視野が制限され、斜線部分の黄色靭帯１５は視認することができるものの、視角範囲αに対して死角となる部分の黄色靭帯１５（斜線以外の部分）は視認することが困難であった。このため、術中の術者の手の感触等を頼りに剥離しなければならず、特に黄色靭帯１５の近くには神経１１が通っていることから、作業に伴う神経損傷のリスクを特に強く念頭に置くことが強いられ、この過程での作業効率は低下せざるを得ないものであった。同時に、より安全性の高い作業が求められていた。   However, since the opening portion 18 of the vertebral arch 16 cut by the surgical drill is relatively small, when performing the one-side approach both-side decompression under the direct view or under the microscope, a part of the yellow ligament 15 is visually recognized. Has become difficult. Specifically, the spinous process 17 or the upper joint process 19 becomes an obstacle and the visual field is limited, and the yellow ligament 15 in the shaded portion can be visually recognized, but the yellow ligament in the portion that becomes a blind spot with respect to the viewing angle range α. It was difficult to visually recognize 15 (part other than the shaded area). For this reason, it must be peeled off depending on the feeling of the hand of the surgeon during the operation, and since the nerve 11 passes particularly near the yellow ligament 15, the risk of nerve damage associated with the work is particularly borne in mind. The work efficiency in this process was inevitably reduced. At the same time, there was a need for safer work.

そこで、本発明は、上記の実状に鑑み、片側進入両側除圧術等を直視下または顕微鏡下で行う場合でも、手術施行時における神経損傷のリスクを低減し作業効率及び安全性を高めることが可能な手術用器具を提供することを課題とするものである。   Therefore, in view of the above situation, the present invention can reduce the risk of nerve damage at the time of performing surgery and increase work efficiency and safety even when performing unilateral entry both-side decompression or the like under direct viewing or under a microscope. An object of the present invention is to provide a possible surgical instrument.

本発明にかかる手術用器具は、
「把持部と、
該把持部から延出されたシャフトと、
該シャフトの先端に設けられた湾曲状のヘッド部と、
該ヘッド部の一部に設けられた平面状の鏡面と
を具備する」
ことを特徴とするものである。 The surgical instrument according to the present invention is:
“With the gripping part,
A shaft extending from the gripping portion;
A curved head provided at the tip of the shaft;
And a flat mirror surface provided on a part of the head portion. "
It is characterized by this.

ここで、「手術用器具」としては、剥離子または鋭匙を例示することができる。また、「把持部」と「シャフト」、または「シャフト」と「ヘッド部」は、別々の部材で構成してもよく、一体に形成してもよい。なお、これらの材質は特に限定されるものではないが、鋼鉄製とすることができる。また、「鏡面」は、反射鏡を備えることにより形成してもよく、ヘッド部を光沢性のある金属で構成し、そのヘッド部の一部に平坦な面を作ることにより鏡面を形成してもよい。なお、反射鏡としては、強化ガラスに銀メッキをしたもの、メタクリル樹脂にアルミニウムを蒸着したもの、またはステンレス板からなるもの、を例示することができる。   Here, examples of the “surgical instrument” include a peeler or a sharp knife. Further, the “gripping part” and “shaft” or the “shaft” and “head part” may be formed of separate members or may be formed integrally. These materials are not particularly limited, but can be made of steel. The “mirror surface” may be formed by providing a reflecting mirror. The head portion is made of a glossy metal, and a mirror surface is formed by forming a flat surface on a part of the head portion. Also good. Examples of the reflecting mirror include those obtained by silver-plating tempered glass, those obtained by vapor-depositing aluminum on methacrylic resin, or those made of a stainless steel plate.

本発明の手術用器具によれば、ヘッド部の一部に鏡面が設けられているため、片側進入両側除圧術等を直視下または顕微鏡下で行う場合に、黄色靭帯等の被切除物の一部が死角に入って直接視認できない場合でも、鏡面に映すことにより被切除物を視認することが可能となる。特に、鏡面は平面状であるため、実物大の像が映され、被切除物の大きさを正確に認識することが可能となる。   According to the surgical instrument of the present invention, since a part of the head portion is provided with a mirror surface, when performing one-side entry both-side decompression or the like under direct viewing or under a microscope, Even if a part of the blind spot enters the blind spot and cannot be seen directly, the object to be excised can be seen by reflecting on the mirror surface. In particular, since the mirror surface is flat, a full-size image is displayed, and the size of the object to be cut can be accurately recognized.

本発明にかかる手術用器具は、上記の構成に加え、
「前記鏡面の外周部は、前記ヘッド部における前記鏡面の周縁部となだらかに連続している」構成とすることができる。 The surgical instrument according to the present invention, in addition to the above configuration,
“The outer peripheral portion of the mirror surface is smoothly continuous with the peripheral portion of the mirror surface in the head portion”.

本発明の手術用器具によれば、鏡面の外周部とヘッド部における鏡面の周縁部との境界部分に段差や角部が生じることがなく、ヘッド部全体を丸みのある形状とすることが可能となる。これによれば、平面状の鏡面を形成するにもかかわらず、組織にダメージを与えるおそれを低減することが可能となる。   According to the surgical instrument of the present invention, there is no step or corner at the boundary between the outer peripheral portion of the mirror surface and the peripheral edge portion of the mirror surface in the head portion, and the entire head portion can be rounded. It becomes. This makes it possible to reduce the risk of damaging the tissue despite the formation of a planar mirror surface.

本発明にかかる手術用器具は、上記の構成に加え、
「前記鏡面は、前記ヘッド部の内側の面に設けられている」構成とすることができる。 The surgical instrument according to the present invention, in addition to the above configuration,
The “mirror surface may be provided on the inner surface of the head portion” may be configured.

本発明の手術用器具によれば、鏡面がヘッド部の湾曲の内側の面に設けられているため、被切除物を切除する際のヘッド部の向きと、鏡面を介して被切除物を視認する際のヘッド部の向きとが一致する。また、被切除物の周囲の組織をよける場合には、湾曲の外側の面を周囲の組織に押し当てながら、鏡面を介して被切除物を視認することが可能となる。   According to the surgical instrument of the present invention, since the mirror surface is provided on the inner surface of the curvature of the head portion, the direction of the head portion when cutting the object to be cut and the object to be cut visually confirmed through the mirror surface The direction of the head when matching is the same. Further, when the tissue around the object to be cut is freed, the object to be cut can be visually recognized through the mirror surface while pressing the outer surface of the curve against the surrounding tissue.

このように、本発明によれば、片側進入両側除圧術等を直視下または顕微鏡下で行う場合でも、手術施行時における神経損傷のリスクを低減し作業効率及び安全性を高めることができる。   Thus, according to the present invention, the risk of nerve damage at the time of surgery can be reduced and the work efficiency and safety can be improved even when performing single-sided entry both-side decompression or the like under direct viewing or under a microscope.

（ａ）は本実施形態の手術用器具の斜視図であり、（ｂ）は手術用器具のヘッド部の横端面図であり、（ｃ）はヘッド部の縦端面図である。(A) is a perspective view of the surgical instrument of this embodiment, (b) is a lateral end view of the head part of the surgical instrument, and (c) is a vertical end view of the head part. （ａ）は脊柱管狭窄症の状態の脊椎を示す説明図であり、（ｂ）は片側進入両側除圧術を示す説明図である。(A) is explanatory drawing which shows the spine of the state of spinal canal stenosis, (b) is explanatory drawing which shows the unilateral approach both-sides decompression. （ａ）は黄色靭帯の一部を切除した状態の脊椎を示す説明図であり、（ｂ）は手術用器具の使用状態を示す説明図である。(A) is explanatory drawing which shows the spine of the state which excised a part of yellow ligament, (b) is explanatory drawing which shows the use condition of the surgical instrument. 他の実施形態の手術用器具を示す斜視図である。It is a perspective view which shows the surgical instrument of other embodiment. 従来の手術用器具を示す斜視図である。It is a perspective view which shows the conventional surgical instrument.

以下、本実施形態の手術用器具１について、図１に基づき説明する。この手術用器具１は、脊柱管狭窄症または椎間板ヘルニア等の脊椎疾患に対する手術的治療、特に「片側進入両側除圧術」において使用可能なものであり、使用者の手指で把持される把持部２と、把持部２の両端（図１（ａ）では上端及び下端）から相反方向に延出された一対のシャフト３と、それぞれのシャフト３の先端に設けられた一対のヘッド部４と、それぞれのヘッド部４の一部に設けられた反射鏡５とを具備している。   Hereinafter, the surgical instrument 1 of the present embodiment will be described with reference to FIG. This surgical instrument 1 can be used in surgical treatments for spinal diseases such as spinal stenosis or intervertebral disc herniation, in particular, “one-sided bilateral decompression”, and a gripping part gripped by a user's fingers 2, a pair of shafts 3 extending in opposite directions from both ends (the upper end and the lower end in FIG. 1A) of the grip portion 2, and a pair of head portions 4 provided at the tips of the shafts 3, And a reflecting mirror 5 provided in a part of each head portion 4.

把持部２、シャフト３、及びヘッド部４は、鋼鉄製であり一体的に構成されている。把持部２は平板状に形成され、シャフト３は略丸棒状に形成されている。ヘッド部４は、黄色靭帯１５（図２参照）等の被切除物を剥離して切開しやすいように杓子形に形成されている。ただし、ヘッド部４における内側の面４ａの一部（シャフト３側の部分）は、平面状となっており、反射鏡５を収容する凹部４ｂが形成されている。また、それぞれのヘッド部４は、湾曲の向きが互いに反対向きになるように形成されている。   The grip part 2, the shaft 3, and the head part 4 are made of steel and integrally formed. The grip portion 2 is formed in a flat plate shape, and the shaft 3 is formed in a substantially round bar shape. The head portion 4 is formed in an insulator shape so that an object to be cut such as the yellow ligament 15 (see FIG. 2) can be peeled off and easily cut. However, a part of the inner surface 4 a (portion on the shaft 3 side) of the head portion 4 is planar, and a recess 4 b for accommodating the reflecting mirror 5 is formed. Further, each head portion 4 is formed so that the directions of bending are opposite to each other.

反射鏡５は、ヘッド部４の凹部４ｂに嵌め込まれた状態で接着されており、その表面である鏡面５ａが平面となっている。凹部４ｂの深さは、反射鏡５の厚みに一致しており、鏡面５ａの外周部５ｂがヘッド部４における鏡面５ａの周縁部４ｃに対しなだらかに連続するように形成されている。つまり、鏡面５ａと周縁部４ｃとの境界部分には断面において段差や角部が生じることがなく、反射鏡５を含むヘッド部４全体が角部のない楕円形の横断面形状となるように形成されている。   The reflecting mirror 5 is bonded in a state where the reflecting mirror 5 is fitted in the concave portion 4b of the head portion 4, and the mirror surface 5a which is the surface thereof is a flat surface. The depth of the concave portion 4b is equal to the thickness of the reflecting mirror 5, and the outer peripheral portion 5b of the mirror surface 5a is formed so as to be smoothly continuous with the peripheral edge portion 4c of the mirror surface 5a in the head portion 4. That is, there is no step or corner in the cross section at the boundary between the mirror surface 5a and the peripheral edge 4c, so that the entire head 4 including the reflecting mirror 5 has an elliptical cross section with no corners. Is formed.

なお、反射鏡５の材質及び形状は特に限定されるものではないが、本実施形態ではステンレス板によって形成され、反射鏡５の鏡面５ａが、手術用器具１の長さ方向に沿って長くなるように長方形状に形成されている。   Although the material and shape of the reflecting mirror 5 are not particularly limited, in the present embodiment, the reflecting mirror 5 is formed of a stainless steel plate, and the mirror surface 5a of the reflecting mirror 5 becomes longer along the length direction of the surgical instrument 1. It is formed in a rectangular shape.

次に、本実施形態の手術用器具１を用いた黄色靭帯１５の切除方法を、図３に基づいて例示する。図３（ａ）に示すように、椎弓１６の片側のみを手術用ドリル等（図示しない）で削った後、神経１１の後側にある黄色靭帯１５のうち、直接視認可能な部分を鋭匙などの手術用器具を用いて切除する。この状態では、黄色靭帯１５による神経１１への圧迫をある程度緩和することができるが、脊柱管１４の中に黄色靭帯１５の一部（すなわち直接視認することが困難な部分）が残されていることから、神経１１への圧迫を十分に取り除くことができない。そこで、次に図３（ｂ）に示すように、ヘッド部４の外側の面を神経１１に押し当てながら、その神経１１を黄色靭帯１５からよけるように移動させる。この際、ヘッド部４の内側の面４ａに設けられた反射鏡５の鏡面５ａに、直接視認が不可能であった黄色靭帯１５が映るため、鏡面５ａを介して黄色靭帯１５を視認することが可能となる。そこで、黄色靭帯１５を視認しながら、残された黄色靭帯１５を鋭匙などの手術用器具を用いて切除する。   Next, an excision method of the yellow ligament 15 using the surgical instrument 1 of the present embodiment will be illustrated based on FIG. As shown in FIG. 3 (a), after shaving only one side of the vertebral arch 16 with a surgical drill or the like (not shown), a portion of the yellow ligament 15 on the back side of the nerve 11 that is directly visible is sharpened. Resect with surgical instruments such as scissors. In this state, the pressure on the nerve 11 by the yellow ligament 15 can be relieved to some extent, but a part of the yellow ligament 15 (that is, a portion that is difficult to directly view) remains in the spinal canal 14. Therefore, the pressure on the nerve 11 cannot be removed sufficiently. Therefore, next, as shown in FIG. 3B, the nerve 11 is moved away from the yellow ligament 15 while pressing the outer surface of the head portion 4 against the nerve 11. At this time, since the yellow ligament 15 that is not directly visible is reflected on the mirror surface 5a of the reflecting mirror 5 provided on the inner surface 4a of the head portion 4, the yellow ligament 15 is visually recognized through the mirror surface 5a. Is possible. Therefore, while visually recognizing the yellow ligament 15, the remaining yellow ligament 15 is excised using a surgical instrument such as a sharp scissors.

このように、本実施形態の手術用器具１によれば、ヘッド部４に反射鏡５が設けられているため、黄色靭帯１５等の被切除物の一部が死角に入って直接視認できない場合でも、鏡面５ａに映すことにより被切除物を視認することができる。特に、鏡面５ａは平面状であるため、実物大の像が映し出され、被切除物の大きさを正確に認識することができる。また、被切除物の周囲の組織をよける場合には、ヘッド部４の外側の面を周囲の組織に押し当てながら、鏡面５ａを介して被切除物を視認することが可能となる。さらに、鏡面５ａを含むヘッド部４全体が丸みのある形状となっているため、平面状の鏡面５ａを形成するにもかかわらず、組織にダメージを与えるおそれを低減することが可能となる。したがって、片側進入両側除圧術等を直視下または顕微鏡下で行う場合でも、手術施行時における神経損傷のリスクを低減し作業効率及び安全性を高めることができる。   As described above, according to the surgical instrument 1 of the present embodiment, since the reflecting mirror 5 is provided in the head portion 4, a part of the object to be excised such as the yellow ligament 15 enters the blind spot and cannot be directly seen. However, it is possible to visually recognize the object to be cut by projecting on the mirror surface 5a. In particular, since the mirror surface 5a is flat, a full-size image is displayed and the size of the object to be cut can be accurately recognized. When the tissue around the object to be cut is freed, it is possible to visually recognize the object to be cut through the mirror surface 5a while pressing the outer surface of the head unit 4 against the surrounding tissue. Furthermore, since the entire head portion 4 including the mirror surface 5a has a rounded shape, it is possible to reduce the risk of damaging the tissue despite the formation of the planar mirror surface 5a. Therefore, even when performing one-side entry both-side decompression or the like under direct viewing or under a microscope, it is possible to reduce the risk of nerve damage at the time of performing surgery and increase work efficiency and safety.

以上、本発明について好適な実施形態を挙げて説明したが、本発明はこれらの実施形態に限定されるものではなく、以下に示すように、本発明の要旨を逸脱しない範囲において、種々の改良及び設計の変更が可能である。   The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

上記実施形態では、ヘッド部４に反射鏡５を配設するものを示したが、図４に示すように、手術用器具８におけるヘッド部９を光沢性のある金属で構成し、そのヘッド部９の一部に平坦な面を作ることにより鏡面９ａを形成してもよい。これによれば、鏡面９ａの外周部９ｂと、ヘッド部９における鏡面９ａの周縁部９ｃとの境界が不明瞭となり、よりなだらかに連続する形状とすることが可能となる。また、反射鏡５が不要になるとともに、ヘッド部９の形状も凹部等を備えない簡易なものとなるため、安価に提供することが可能になる。   In the above embodiment, the reflection mirror 5 is disposed on the head portion 4. However, as shown in FIG. 4, the head portion 9 in the surgical instrument 8 is made of glossy metal, and the head portion. The mirror surface 9 a may be formed by making a flat surface on a part of the surface 9. According to this, the boundary between the outer peripheral portion 9b of the mirror surface 9a and the peripheral portion 9c of the mirror surface 9a in the head portion 9 becomes unclear, and it becomes possible to make the shape more continuous. In addition, the reflecting mirror 5 is not required, and the shape of the head portion 9 is simple and does not include a concave portion, so that it can be provided at a low cost.

また、上記実施形態では、把持部２の両側にそれぞれシャフト３及びヘッド部４を備えるものを示したが、シャフト及びヘッド部を一組のみ備える手術用器具においても本発明を適用することができる。また、一対のヘッド部４にそれぞれ反射鏡５を備えるものを示したが、いずれか一方のヘッド部４にのみ反射鏡５を備えるようにしてもよい。また、一対のヘッド部４における湾曲の向きを互いに反対向き（１８０度異なる向き）とするものを示したが、互いに同一の向き、またはシャフトを中心に所定角度変位した向きとすることもできる。   Moreover, in the said embodiment, what showed the shaft 3 and the head part 4 on both sides of the holding part 2, respectively was shown, However, This invention is applicable also to the surgical instrument provided with only one set of a shaft and a head part. . Moreover, although what provided the reflecting mirror 5 in each of a pair of head part 4 was shown, you may make it provide the reflecting mirror 5 only in any one head part 4. FIG. In addition, the bending directions of the pair of head portions 4 are opposite to each other (directions different by 180 degrees). However, they can be the same direction or directions displaced by a predetermined angle around the shaft.

また、上記実施形態では、ヘッド部４の内側の面４ａのみに鏡面５ａを形成するものを示したが、ヘッド部４の外側の面にも鏡面を形成するようにしてもよい。   In the above embodiment, the mirror surface 5a is formed only on the inner surface 4a of the head portion 4. However, the mirror surface may be formed on the outer surface of the head portion 4 as well.

さらに、上記実施形態では、手術用器具１として剥離子様の手術用器具を示したが、鋭匙等の手術用器具に本発明を適用することも可能である。   Furthermore, in the above-described embodiment, an exfoliator-like surgical instrument is shown as the surgical instrument 1, but the present invention can also be applied to a surgical instrument such as a sharp knife.

１，８ 手術用器具
２ 把持部
３ シャフト
４，９ ヘッド部
４ｃ，９ｃ 周縁部
５ 反射鏡
５ａ，９ａ 鏡面
５ｂ，９ｂ 外周部 DESCRIPTION OF SYMBOLS 1,8 Surgical instrument 2 Grasping part 3 Shaft 4,9 Head part 4c, 9c Peripheral part 5 Reflective mirror 5a, 9a Mirror surface 5b, 9b Outer peripheral part

Claims (3)

把持部と、
該把持部から延出されたシャフトと、
該シャフトの先端に設けられた湾曲状のヘッド部と、
該ヘッド部の一部に設けられた平面状の鏡面と
を具備することを特徴とする手術用器具。 A gripping part;
A shaft extending from the gripping portion;
A curved head provided at the tip of the shaft;
A surgical instrument comprising a planar mirror surface provided at a part of the head portion. 前記鏡面の外周部は、前記ヘッド部における前記鏡面の周縁部となだらかに連続していることを特徴とする請求項１に記載の手術用器具。   The surgical instrument according to claim 1, wherein the outer peripheral portion of the mirror surface is smoothly continuous with a peripheral portion of the mirror surface in the head portion. 前記鏡面は、前記ヘッド部の内側の面に設けられていることを特徴とする請求項１または請求項２に記載の手術用器具。   The surgical instrument according to claim 1, wherein the mirror surface is provided on an inner surface of the head portion.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020199186A (en) * 2019-06-13 2020-12-17 周 中村 Sharp spoon for spine surgery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646707U (en) * 1992-12-02 1994-06-28 日本エー・シー・ピー株式会社 Medical mirror hook
JP2003519527A (en) * 1999-12-24 2003-06-24 リー，ヒ−ヨン Method and surgical instrument for fracture of facial bone such as lower jaw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646707U (en) * 1992-12-02 1994-06-28 日本エー・シー・ピー株式会社 Medical mirror hook
JP2003519527A (en) * 1999-12-24 2003-06-24 リー，ヒ−ヨン Method and surgical instrument for fracture of facial bone such as lower jaw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020199186A (en) * 2019-06-13 2020-12-17 周 中村 Sharp spoon for spine surgery
JP7303033B2 (en) 2019-06-13 2023-07-04 周 中村 Spinal surgery sharp spoon

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