JP5596989B2 - Electrode system - Google Patents

Electrode system Download PDF

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JP5596989B2
JP5596989B2 JP2010014215A JP2010014215A JP5596989B2 JP 5596989 B2 JP5596989 B2 JP 5596989B2 JP 2010014215 A JP2010014215 A JP 2010014215A JP 2010014215 A JP2010014215 A JP 2010014215A JP 5596989 B2 JP5596989 B2 JP 5596989B2
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electrode
shape
insulating member
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bending
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JP2011152204A (en
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嘉郎 有働
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Olympus Corp
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Description

本発明は、線状組織に電気的刺激を与える電極システムに関する。 The present invention relates to a given El electrode system electrical stimulation linear tissue.

従来より、神経刺激装置、疼痛緩和装置、てんかん治療装置、および筋肉刺激装置等の、電気的刺激を直接または間接的に神経組織および筋肉等の生体組織(線状組織)に与え、治療を行う刺激発生装置が知られている。これらの刺激発生装置は内部に電源を有していて、電気的刺激を伝達する電極リードとともに生体に埋め込まれて使用される。
一般に、電極リードは、生体組織に電気的刺激を与え、もしくは生体組織に生じる電気的興奮を検出するための少なくとも1つの電極部と、刺激発生装置と電気的に接続するための電気コネクタと、電極部と刺激発生装置との間に設けられ電気的刺激を伝達するためのリードボディとを有している。
Conventionally, electrical stimulation such as a nerve stimulation device, a pain relief device, an epilepsy treatment device, and a muscle stimulation device is directly or indirectly applied to biological tissue (linear tissue) such as nerve tissue and muscle to perform treatment. Stimulation generators are known. These stimulation generators have a power source inside and are used by being embedded in a living body together with an electrode lead for transmitting electrical stimulation.
In general, an electrode lead applies electrical stimulation to biological tissue, or detects at least one electrode part for detecting electrical excitation generated in the biological tissue, and an electrical connector for electrically connecting to the stimulation generator; A lead body is provided between the electrode unit and the stimulus generator for transmitting electrical stimulation.

たとえば、特許文献1に記載の神経刺激用の電極アセンブリ(電極部)は、互いに反対方向に延びるように螺旋状に形成された一対の電極を有しており、この一対の電極が神経に巻きつくように装着される。特許文献2に記載の電極システム(電極部)では、所定の方向に延びる背骨状部材と、この背骨状部材から肋骨状に互い違いに延びる指部材とが生体適合性を有する高分子材料で一体に形成されている。指部材の内側の面には電極が設けられていて、電極システムの指部材が神経組織に巻きつくように装着されたときに電極が神経に当接する。   For example, the electrode assembly (electrode part) for nerve stimulation described in Patent Document 1 has a pair of electrodes formed in a spiral shape so as to extend in opposite directions, and the pair of electrodes are wound around the nerve. It is attached so as to be attached. In the electrode system (electrode part) described in Patent Document 2, a spine-like member extending in a predetermined direction and finger members alternately extending in a rib shape from the spine-like member are integrally made of a biocompatible polymer material. Is formed. An electrode is provided on the inner surface of the finger member, and the electrode contacts the nerve when the finger member of the electrode system is mounted so as to wrap around the nerve tissue.

米国特許第4920979号明細書U.S. Pat. No. 4,920,979 米国特許第5095905号明細書US Pat. No. 5,095,905

しかしながら、これらの電極部を線状組織に装着するのは技術的に容易ではない。具体的には、神経組織に隣接して血管が存在することが多く、神経組織に電極部を取り付けるときには、神経組織と血管とを結合する組織(結合織)を部分的に剥離して神経組織の周囲を分離し、この分離した部分に電極部を挿入し、把持鉗子等の処置具で電極部を神経組織に取り付ける必要がある。しかし、神経組織の周囲は混み入っており、電極部を神経組織に取り付けるのには、術者に一定以上の熟練が必要とされ、困難なものとなっている。   However, it is not technically easy to attach these electrode portions to a linear tissue. Specifically, there are many blood vessels adjacent to the nerve tissue, and when attaching an electrode part to the nerve tissue, the tissue (connective tissue) that connects the nerve tissue and the blood vessel is partially peeled to remove the nerve tissue. It is necessary to insert the electrode portion into the separated portion and attach the electrode portion to the nerve tissue with a treatment tool such as a grasping forceps. However, the periphery of the nerve tissue is crowded, and it is difficult for the operator to have a certain level of skill to attach the electrode part to the nerve tissue.

本発明は、このような問題点に鑑みてなされたものであって、生体の線状組織に確実かつ容易に取り付け可能な電極システムを提供することを目的とする。 The present invention was made in view of such problems, and an object thereof is to provide a reliable and easily installed available-electrode system in the linear organization of the living body.

上記課題を解決するために、この発明は以下の手段を提案している。
本発明の電極システムは、所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、を備え、前記電極部は、弾性材料でシート状に形成された絶縁部材と、前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、を有し、前記電極部は、外力が作用していない自然状態で前記湾曲形状となるように形成され、前記処置具は、前記湾曲形状の前記電極部を前記平坦形状に切り替えて保持するとともに、前記保持を解除可能な伸展機構を有し、前記絶縁部材は、自身が湾曲する湾曲方向に平行に延びる電極側係合部が形成され、前記伸展機構は、前記絶縁部材より剛性が高い材質で所定の方向に延びるように形成され、前記絶縁部材の前記電極側係合部に着脱可能に係合する伸展部材と、前記絶縁部材から前記伸展部材が取り外される際に前記絶縁部材に当接される当接部材と、を有することを特徴としている。
In order to solve the above problems, the present invention proposes the following means.
An electrode system according to the present invention includes an electrode part that is at least partially switchable from one of a curved shape and a flat flat shape curved so as to be wound around a predetermined linear tissue, A treatment instrument that switches at least a part of the shape from one of the curved shape and the flat shape to the other, and the electrode portion is formed of an elastic material in a sheet shape, and the insulating member There have a, and an electrode capable of applying a predetermined voltage is provided on one surface of the inner surface of the curved when the a curved shape, the electrode portion, the natural state where no external force is acting The treatment instrument is formed to have a curved shape, and has an extension mechanism that can switch and hold the curved electrode portion to the flat shape, and can release the holding. An electrode side engaging portion extending in parallel with the bending direction of bending is formed, and the extension mechanism is formed to extend in a predetermined direction with a material having higher rigidity than the insulating member, and the electrode side engagement of the insulating member And an abutting member that abuts against the insulating member when the extending member is detached from the insulating member .

また、上記の電極システムにおいて、前記絶縁部材は、前記湾曲形状となったときに筒状に形成され、前記電極側係合部は、前記絶縁部材が前記湾曲形状となったときの筒状の前記絶縁部材の中心軸線方向の両端部側にそれぞれ形成され、前記伸展機構は、2つの前記伸展部材と、前記2つの伸展部材が、それぞれが延びる前記所定の方向に交差する方向に並ぶように支持するとともに、前記2つの伸展部材の前記交差する方向の間隔を調整可能な部材間隔調整部と、をさらに有することがより好ましい。 In the above electrode system, the insulating member is formed in a cylindrical shape when the curved shape is formed, and the electrode-side engaging portion is formed in a cylindrical shape when the insulating member is curved . The extension members are formed on both end sides in the central axis direction of the insulating member, and the extension mechanism is arranged so that the two extension members and the two extension members are aligned in a direction intersecting the predetermined direction in which each of the extension members extends. It is more preferable to further include a member interval adjusting unit that supports and can adjust the interval between the two extending members in the intersecting direction.

また、本発明の他の電極システムは、所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、を備え、前記電極部は、弾性材料でシート状に形成された絶縁部材と、前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、を有し、前記電極部は、外力が作用していない自然状態で前記湾曲形状となるように形成され、前記処置具は、前記湾曲形状の前記電極部を前記平坦形状に切り替えて保持するとともに、前記保持を解除可能な伸展機構を有し、前記伸展機構は、前記絶縁部材における前記一方の面側、および前記一方の面とは反対側の他方の面側から前記電極部を挟持して前記電極部を前記平坦形状に保持するとともに、前記挟持を解除可能なことを特徴としている。 In addition, another electrode system of the present invention includes an electrode part that can be at least partially switched from one of a curved shape and a flat flat shape so as to be wound around a predetermined linear structure, A treatment instrument that switches the shape of at least a part of the electrode portion from one of the curved shape and the flat shape to the other, and the electrode portion includes an insulating member formed into a sheet shape with an elastic material; And an electrode provided on one surface which is an inner surface of the curve when the insulating member has the curved shape, to which a predetermined voltage can be applied, and no external force is applied to the electrode portion. It is formed so as to have the curved shape in a natural state, and the treatment tool has an extension mechanism that can switch and hold the curved electrode part to the flat shape, and can release the holding. Machine The electrode member is clamped from the one surface side of the insulating member and the other surface side opposite to the one surface to hold the electrode portion in the flat shape, and the clamping is released. It is characterized by what is possible.

また、上記の電極システムにおいて、前記伸展機構は、前記湾曲形状に形成された前記電極部の湾曲を伸ばして所定の電極部伸展方向に伸展させたものを、前記電極部伸展方向と自身の軸線方向とが平行になるように内部に収容する管状部材と、前記管状部材内の前記電極部を前記管状部材の前記軸線方向の先端側に押し出す押し出し部材と、を有することがより好ましい。   Further, in the above electrode system, the extension mechanism extends the curve of the electrode part formed in the curved shape and extends the electrode part in a predetermined electrode part extension direction, and the electrode part extension direction and its own axis line. It is more preferable to have a tubular member housed inside so that the direction is parallel, and an extruding member that pushes the electrode portion in the tubular member toward the distal end side in the axial direction of the tubular member.

また、上記の電極システムにおいて、前記伸展機構は、前記湾曲形状に形成された前記電極部の湾曲を伸ばして所定の電極部伸展方向に伸展させたものにおいて、前記絶縁部材の前記一方の面側に配置されるとともに前記電極部伸展方向の一方側に移動可能な第一の挟持部材と、前記絶縁部材の前記他方の面側に配置される第二の挟持部材と、前記絶縁部材の前記電極部伸展方向の一方側に当接する支持部材と、を有することがより好ましい。   Further, in the above electrode system, the extension mechanism is formed by extending the curve of the electrode part formed in the curved shape and extending in a predetermined electrode part extension direction, and the one surface side of the insulating member And a second clamping member arranged on the other surface side of the insulating member, and the electrode of the insulating member It is more preferable to have a support member that abuts on one side in the direction of partial extension.

また、本発明の他の電極システムは、所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、を備え、前記電極部は、弾性材料でシート状に形成された絶縁部材と、前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、を有し、前記電極部は、外力が作用していない自然状態で前記平坦形状となるように形成され、前記処置具は、前記平坦形状の前記電極部を前記湾曲形状に切り替え可能な湾曲機構を有し、前記絶縁部材は、前記一方の面に平行に延びる電極側係合部が形成され、前記電極部は、前記絶縁部材より剛性が高い弾性材料で所定の線状組織に巻きつくように湾曲した形状に形成され、前記電極側係合部に係合可能とされた湾曲部材を有し、前記湾曲機構は、前記絶縁部材を把持する把持部と、一定の剛性を有して所定の方向に延びるように形成され、前記絶縁部材の前記電極側係合部に着脱可能に係合する補強部材と、前記湾曲部材を前記湾曲部材の湾曲を伸ばす湾曲部伸展方向に伸展した状態で保持するとともに、前記湾曲部伸展方向に伸展した前記湾曲部材を前記湾曲部伸展方向に押し出す押出し部と、を有することを特徴としている。 In addition, another electrode system of the present invention includes an electrode part that can be at least partially switched from one of a curved shape and a flat flat shape so as to be wound around a predetermined linear structure, A treatment instrument that switches the shape of at least a part of the electrode portion from one of the curved shape and the flat shape to the other, and the electrode portion includes an insulating member formed into a sheet shape with an elastic material; And an electrode provided on one surface which is an inner surface of the curve when the insulating member has the curved shape, to which a predetermined voltage can be applied, and no external force is applied to the electrode portion. The treatment instrument is formed so as to have the flat shape in a natural state, and the treatment tool has a bending mechanism capable of switching the flat electrode portion to the curved shape, and the insulating member is parallel to the one surface. Electricity that extends to A side engagement portion is formed, and the electrode portion is formed in a curved shape so as to wrap around a predetermined linear tissue with an elastic material having rigidity higher than that of the insulating member, and can be engaged with the electrode side engagement portion. And the bending mechanism is formed to extend in a predetermined direction with a certain rigidity, and the electrode side engagement of the insulating member. A reinforcing member that is detachably engaged with a portion, and holds the bending member in a state where the bending member extends in a bending portion extending direction that extends the bending of the bending member, and the bending member that extends in the bending portion extending direction is bent. And an extruding portion that extrudes in the direction of partial extension.

本発明の電極システムによれば、生体の線状組織に確実かつ容易に取り付けることができる。 According to the onset Ming electrode system can be attached securely and easily to a linear organization of the living body.

本発明の第1実施形態の電極システムの平面図である。It is a top view of the electrode system of a 1st embodiment of the present invention. 同電極システムの電極部の外力が作用していない自然状態における斜視図である。It is a perspective view in the natural state where the external force of the electrode part of the electrode system is not acting. 同電極部の湾曲を伸ばして平坦形状にしたときの斜視図である。It is a perspective view when extending the curve of the electrode part to make it flat. 同電極部を平坦形状にしたときの要部断面図である。It is principal part sectional drawing when the same electrode part is made into flat shape. 同電極システムの処置具の側面断面図である。It is side surface sectional drawing of the treatment tool of the electrode system. 図5中の切断線A1−A1の断面図である。FIG. 6 is a cross-sectional view taken along a cutting line A1-A1 in FIG. 患者の神経組織の状態を示す説明図である。It is explanatory drawing which shows the state of a patient's nerve tissue. 同電極部に処置具の伸展部材を挿通させる手順を示す説明図である。It is explanatory drawing which shows the procedure in which the extension member of a treatment tool is penetrated to the electrode part. 同電極部と処置具をトロッカーに挿通する手順を示す説明図である。It is explanatory drawing which shows the procedure which penetrates the electrode part and a treatment tool through a trocar. 同電極部を平坦形状にして神経組織と膜との間に挿入した状態を示す説明図である。It is explanatory drawing which shows the state which made the same electrode part flat and was inserted between the nerve tissue and the film | membrane. 同電極部から伸展部材を取り外す手順を示す説明図である。It is explanatory drawing which shows the procedure which removes an extending member from the electrode part. 同電極部を神経組織に取り付けた状態を示す図である。It is a figure which shows the state which attached the electrode part to the nerve tissue. 本発明の第1実施形態の変形例における電極システムの電極部の斜視図である。It is a perspective view of the electrode part of the electrode system in the modification of 1st Embodiment of this invention. 本発明の第1実施形態の変形例における電極システムの電極部の斜視図である。It is a perspective view of the electrode part of the electrode system in the modification of 1st Embodiment of this invention. 本発明の第1実施形態の変形例における電極システムの電極部の斜視図である。It is a perspective view of the electrode part of the electrode system in the modification of 1st Embodiment of this invention. 同電極システムの電極部に処置具の伸展部材を挿通させたときの側面図である。It is a side view when the extending member of the treatment tool is inserted through the electrode portion of the electrode system. 同電極部に処置具の伸展部材を挿通させたときの底面図である。It is a bottom view when the extension member of a treatment tool is inserted in the electrode part. 本発明の第1実施形態の変形例における電極システムの電極部を平坦形状にしたときの平面図である。It is a top view when the electrode part of the electrode system in the modification of 1st Embodiment of this invention is made flat. 本発明の第1実施形態の変形例における電極システムの電極部に処置具の伸展部材を挿通したときの平面図である。It is a top view when the extension member of a treatment tool is inserted in the electrode part of the electrode system in the modification of a 1st embodiment of the present invention. 本発明の第1実施形態の変形例における電極システムの電極部の斜視図である。It is a perspective view of the electrode part of the electrode system in the modification of 1st Embodiment of this invention. 本発明の第2実施形態の電極システムの電極部の平面図である。It is a top view of the electrode part of the electrode system of 2nd Embodiment of this invention. 同電極システムの電極部に処置具の伸展部材を挿通させたときの平面図である。It is a top view when the extending member of a treatment tool is inserted in the electrode part of the electrode system. 本発明の第2実施形態の変形例における電極システムの電極部の平面図である。It is a top view of the electrode part of the electrode system in the modification of 2nd Embodiment of this invention. 同電極システムの電極部に処置具の伸展部材を挿通させたときの平面図である。It is a top view when the extending member of a treatment tool is inserted in the electrode part of the electrode system. 本発明の第3実施形態の電極システムの一部を破断した平面図である。It is the top view which fractured | ruptured a part of electrode system of 3rd Embodiment of this invention. 同電極システムの電極部の自然状態での斜視図である。It is a perspective view in the natural state of the electrode part of the same electrode system. 同電極部を平坦形状にしたときの斜視図である。It is a perspective view when the same electrode part is made into a flat shape. 同電極部に処置具の伸展部材を挿通させたときの斜視図である。It is a perspective view when the extending member of a treatment tool is made to penetrate the electrode part. 同電極部を処置具の伸展部材により広げたときの斜視図である。It is a perspective view when the same electrode part is expanded by the extending member of the treatment tool. 同電極部から伸展部材を取り外す状態を示す斜視図である。It is a perspective view which shows the state which removes an extending member from the electrode part. 本発明の第4実施形態の電極システムの斜視図である。It is a perspective view of the electrode system of 4th Embodiment of this invention. 同電極システムの電極部を平坦形状に伸展させたときの平面図である。It is a top view when the electrode part of the same electrode system is extended in the flat shape. 同電極システムの処置具に同電極部を取り付けたときの状態を示す平面図である。It is a top view which shows a state when the electrode part is attached to the treatment tool of the electrode system. 同処置具に同電極部を取り付けたときの状態を示す側面図である。It is a side view which shows a state when the electrode part is attached to the treatment tool. 同電極部を神経組織に取り付けた状態を示す断面図である。It is sectional drawing which shows the state which attached the electrode part to the nerve tissue. 本発明の第5実施形態の電極システムの平面断面図である。It is a plane sectional view of the electrode system of a 5th embodiment of the present invention. 同電極システムの側面断面図である。It is side surface sectional drawing of the electrode system. 同電極システムの電極部を神経組織に取り付けた状態を示す断面図である。It is sectional drawing which shows the state which attached the electrode part of the electrode system to the nerve tissue. 本発明の第6実施形態の電極システムの斜視図である。It is a perspective view of the electrode system of 6th Embodiment of this invention. 同電極システムの処置具の側面断面図である。It is side surface sectional drawing of the treatment tool of the electrode system. 同電極システムの電極部を神経組織に取り付けた状態を示す斜視図である。It is a perspective view which shows the state which attached the electrode part of the electrode system to the nerve tissue. 本発明の第7実施形態の電極システムの斜視図である。It is a perspective view of the electrode system of 7th Embodiment of this invention. 同電極システムの処置具が電極部に取り付けられる状態を示す側面図である。It is a side view which shows the state by which the treatment tool of the electrode system is attached to an electrode part. 同処置具が同電極部に取り付けられた状態を示す側面の断面図である。It is sectional drawing of the side surface which shows the state by which the treatment tool was attached to the electrode part. 同電極部が神経組織と膜との間に挿入された状態を示す図である。It is a figure which shows the state by which the same electrode part was inserted between the nerve tissue and the film | membrane. 同電極部を神経組織に取り付けた状態を示す断面図である。It is sectional drawing which shows the state which attached the electrode part to the nerve tissue.

(第1実施形態)
以下、本発明に係る電極システムの第1実施形態を、図1から図20を参照しながら説明する。以下の実施形態では、この電極システムが神経刺激装置とともに用いられる場合を例にとって説明する。
図1に示すように、本実施形態の電極システム1は、神経組織(線状組織)に所定の電圧を印加する電極部2と、神経組織に電極部2を取り付けるための処置具3とを備えて構成されている。なお、本実施形態では、電極システム1は神経組織に付与する電気的刺激を発生させる神経刺激装置5と、電極部2と神経刺激装置5とを電気的に接続するリードボディ6とともに用いられる。
(First embodiment)
Hereinafter, a first embodiment of an electrode system according to the present invention will be described with reference to FIGS. 1 to 20. In the following embodiment, the case where this electrode system is used with a nerve stimulation apparatus will be described as an example.
As shown in FIG. 1, an electrode system 1 according to this embodiment includes an electrode unit 2 that applies a predetermined voltage to a nerve tissue (linear tissue), and a treatment tool 3 for attaching the electrode unit 2 to the nerve tissue. It is prepared for. In the present embodiment, the electrode system 1 is used with a nerve stimulation device 5 that generates electrical stimulation to be applied to nerve tissue, and a lead body 6 that electrically connects the electrode unit 2 and the nerve stimulation device 5.

図2および図3に示すように、電極部2は、神経組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に全体の形状が切り替え(変形)可能なものであり、本実施形態では、電極部2は外力が作用していない自然状態で図2に示す湾曲形状に形成され、図3に示す平坦形状に切り替え可能となっている。
電極部2は、弾性材料でシート状に形成された電極支持体(絶縁部材)9と、電極支持体9が湾曲形状になったときに湾曲の内側の面となる一方の面9aに設けられた一対の電極10とを有している。
As shown in FIG. 2 and FIG. 3, the electrode portion 2 is capable of switching (deforming) the entire shape from one of a curved shape and a flat shape curved so as to wrap around the nerve tissue. In the present embodiment, the electrode portion 2 is formed in a curved shape shown in FIG. 2 in a natural state where no external force is applied, and can be switched to a flat shape shown in FIG.
The electrode portion 2 is provided on an electrode support (insulating member) 9 formed in a sheet shape with an elastic material, and on one surface 9a which becomes a curved inner surface when the electrode support 9 is curved. And a pair of electrodes 10.

電極支持体9は、神経組織を損傷させないように、シリコン等の柔らかい絶縁材料で形成されている。
電極10は、電極支持体9が湾曲形状となったときの湾曲の軸線C1方向の両端部側に、電極支持体9が湾曲する湾曲方向D1に平行に延びるように電極支持体9の一方の面9aから露出した状態で設けられている。電極10は弾性を有し生体適合性の高い金属等で形成され、自然状態で湾曲形状に形成されている。つまり、本実施形態では、電極10の弾性力により、電極部2の形状は自然状態で湾曲形状になるとともに平坦形状に変形できる。
The electrode support 9 is made of a soft insulating material such as silicon so as not to damage nerve tissue.
The electrode 10 has one end of the electrode support 9 extending so as to extend in parallel to the bending direction D1 in which the electrode support 9 bends toward both ends in the direction of the axis C1 of the curve when the electrode support 9 has a curved shape. It is provided in a state exposed from the surface 9a. The electrode 10 is formed of a metal having elasticity and high biocompatibility, and is formed in a curved shape in a natural state. In other words, in the present embodiment, due to the elastic force of the electrode 10, the shape of the electrode portion 2 is naturally curved and can be deformed into a flat shape.

図2および図4に示すように、電極支持体9には、一方の面9aとは反対側の他方の面9bの軸線C1方向の両端部に、断面が円形の貫通孔であるガイド孔(電極側係合部)11がそれぞれ形成されている。本実施形態では、ガイド孔11は、他方の面9bから外側に突出した部分内に湾曲方向D1に平行に延びるように形成されている。
なお、後述するようにガイド孔11には電極部2を平坦形状に伸ばすための伸展部材13が係合するが、軸線C1方向の位置は、ガイド孔11と電極10とで一致するように配置されることが好ましい。伸展部材13により、電極10の弾性力に抗して電極部2を平坦形状に効果的に伸ばすことができるからである。
As shown in FIGS. 2 and 4, the electrode support 9 has guide holes (through holes having a circular cross section at both ends in the direction of the axis C1 of the other surface 9b opposite to the one surface 9a). Electrode side engaging portions) 11 are formed respectively. In the present embodiment, the guide hole 11 is formed so as to extend in parallel with the bending direction D1 in a portion protruding outward from the other surface 9b.
As will be described later, an extension member 13 for extending the electrode portion 2 into a flat shape engages with the guide hole 11, but the position in the direction of the axis C <b> 1 is arranged so as to coincide with the guide hole 11 and the electrode 10. It is preferred that This is because the extension member 13 can effectively extend the electrode portion 2 in a flat shape against the elastic force of the electrode 10.

図1に示すように、処置具3は、電極部2の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替えるものであり、本実施形態では、処置具3は湾曲形状の電極部2を平坦形状に切り替えて保持するとともに、保持を解除可能な伸展機構12を有する。
図5および図6に示すように、伸展機構12は、電極支持体9より剛性が高い材質で所定の方向に延びるように形成された一対の伸展部材13と、電極支持体9のガイド孔11から伸展部材13が取り外される際に当接される押え棒(当接部材)14とを有して構成されている。
As shown in FIG. 1, the treatment instrument 3 switches the shape of the electrode part 2 from one of the curved shape and the flat shape to the other, and in this embodiment, the treatment tool 3 is a curved electrode. An extension mechanism 12 that can hold the portion 2 by switching to a flat shape and can release the holding is provided.
As shown in FIGS. 5 and 6, the extension mechanism 12 includes a pair of extension members 13 formed of a material having higher rigidity than the electrode support 9 and extending in a predetermined direction, and a guide hole 11 of the electrode support 9. And a presser bar (abutting member) 14 that abuts when the extension member 13 is removed.

伸展部材13は金属等で形成され、その先端側は、電極支持体9のガイド孔11に着脱可能に係合することができる。一対の伸展部材13は、基端側で互いに固定されて全体として略Y字状に構成されている。そして、伸展部材13の基端側は、押え棒14の基端側で押え棒14の長さ方向に延びる支持孔14aに挿通されている。このように、伸展部材13は押え棒14に対してスライド可能となっている。
また、押え棒14の先端には、押え棒14が当接するリードボディ6の先端側の形状に対応する凹部14bが形成されている。
The extending member 13 is formed of metal or the like, and the distal end side thereof can be detachably engaged with the guide hole 11 of the electrode support 9. The pair of extension members 13 are fixed to each other on the base end side, and are configured in a substantially Y shape as a whole. The base end side of the extension member 13 is inserted through a support hole 14 a extending in the length direction of the presser bar 14 on the base end side of the presser bar 14. Thus, the extension member 13 can slide with respect to the presser bar 14.
Further, a concave portion 14b corresponding to the shape of the distal end side of the lead body 6 with which the presser bar 14 abuts is formed at the front end of the presser bar 14.

神経刺激装置5は不図示の電源を有し、神経組織が発生する電気的信号を検出し、所定の波形の電気的刺激を発生する。これにより、神経刺激装置5は、電極部2で取得した神経組織の信号を検出し、必要に応じてこの神経組織に電気的刺激を印加することができる。
リードボディ6は公知の構成のものが用いられ、電極10と神経刺激装置5とを電気的に接続する不図示のコイルと、コイルの外周を覆う絶縁性で可撓性を有するチューブ15(図1参照)を有している。
The nerve stimulation device 5 has a power source (not shown), detects an electrical signal generated by the nerve tissue, and generates an electrical stimulation having a predetermined waveform. Thereby, the nerve stimulation apparatus 5 can detect the signal of the nerve tissue acquired with the electrode part 2, and can apply electrical stimulation to this nerve tissue as needed.
The lead body 6 has a known structure, and a coil (not shown) that electrically connects the electrode 10 and the nerve stimulating device 5 and an insulating and flexible tube 15 that covers the outer periphery of the coil (see FIG. 1).

次に、以上のように構成された電極システム1を用いて、図7に示すような神経組織Nに電極部2を取り付ける手技について説明する。
まず、術者は、患者の胸部に不図示のトロッカーT(図9参照)を取り付け、胸腔の内部を不図示の胸腔鏡で観察する。そして、胸腔内に不図示のナイフ等の切開用処置具を挿入し、所望の神経組織Nの周辺に位置する膜等の周辺組織Mを切断して神経組織Nを露出させる。
続いて、図8に示すように、押え棒14の凹部14bをリードボディ6の先端側に係合させることで、リードボディ6を挟んで押え棒14を電極部2に当接させる。そして、湾曲形状の電極部2のガイド孔11に伸展部材13の先端側を挿通し係合させることで、図9に示すように電極部2を平坦形状に切り替える(平坦化工程)。そして、電極部2と処置具3とが一体になった状態でトロッカーT内を挿通させる。
Next, a technique for attaching the electrode unit 2 to the nerve tissue N as shown in FIG. 7 using the electrode system 1 configured as described above will be described.
First, the surgeon attaches a trocar T (not shown) to the patient's chest and observes the inside of the chest cavity with a thoracoscope (not shown). Then, an incision treatment tool such as a knife (not shown) is inserted into the chest cavity, and the peripheral tissue M such as a membrane located around the desired nerve tissue N is cut to expose the nerve tissue N.
Subsequently, as shown in FIG. 8, the presser bar 14 is brought into contact with the electrode part 2 with the lead body 6 interposed therebetween by engaging the concave portion 14 b of the presser bar 14 with the distal end side of the lead body 6. And the electrode part 2 is switched to a flat shape as shown in FIG. 9 by inserting and engaging the front end side of the extending member 13 to the guide hole 11 of the curved electrode part 2 (flattening step). And the inside of the trocar T is penetrated in the state in which the electrode part 2 and the treatment tool 3 were united.

次に、図10に示すように、電極部2の一方の面9a側が神経組織Nに対向するように、平坦形状に変形させた電極部2の先端側を神経組織Nと周辺組織Mとの間に挿入する(位置決め工程)。
そして、図11に示すように、押え棒14の位置を固定した状態でガイド孔11から伸展部材13を引き抜くことで、図12に示すように電極部2が湾曲形状に戻り電極部2が神経組織Nに巻きついて電極10が神経組織Nに接触する。
なお、神経組織Nの全周にわたり電極10が神経組織Nに接触していなくても、神経組織Nの全周のうちの一部に電極10が接触していればよい。電極10が神経組織Nに接触している範囲が広ければ神経刺激装置5が発生する電気的刺激を神経組織Nに効果的に伝達することができ、接触している範囲が狭ければ電極10が神経組織Nに巻きつくことにより神経組織Nに与える損傷を抑えることができるため、接触の度合いは術者や医師等が適宜設定してよい。
Next, as shown in FIG. 10, the distal end side of the electrode part 2 deformed into a flat shape is placed between the nerve tissue N and the surrounding tissue M so that the one surface 9 a side of the electrode part 2 faces the nerve tissue N. Insert between them (positioning step).
Then, as shown in FIG. 11, by pulling out the extension member 13 from the guide hole 11 with the position of the presser bar 14 fixed, the electrode part 2 returns to a curved shape as shown in FIG. The electrode 10 is wound around the tissue N and contacts the nerve tissue N.
Even if the electrode 10 is not in contact with the nerve tissue N over the entire circumference of the nerve tissue N, the electrode 10 may be in contact with a part of the entire circumference of the nerve tissue N. If the range where the electrode 10 is in contact with the nerve tissue N is wide, the electrical stimulation generated by the nerve stimulation device 5 can be effectively transmitted to the nerve tissue N, and if the range where the electrode 10 is in contact is narrow, the electrode 10 Since the wound on the nerve tissue N can be suppressed by wrapping around the nerve tissue N, the degree of contact may be appropriately set by an operator, a doctor, or the like.

続いて、術者は、リードボディ6と神経刺激装置5を患者の皮下に埋め込み、手技を終了する。   Subsequently, the surgeon embeds the lead body 6 and the nerve stimulation device 5 under the patient's skin, and finishes the procedure.

以上説明したように、本実施形態の電極システム1によれば、術者は、処置具3により電極部2を平坦形状に切り替えて電極部2の一方の面9側が神経組織Nに対向するように配置する。そして、処置具3により電極部2の形状を湾曲形状に切り替えることで、電極10を神経組織Nに当接させつつ電極部2を神経組織Nに巻きつける。
このため、たとえば、神経組織Nが混み入った組織の間にある場合であっても、電極部2を平坦形状に切り替えてから神経組織Nに近づけることで、電極部2を患者の神経組織Nに確実かつ容易に取り付け、所定の電圧を印加することができる。
As described above, according to the electrode system 1 of the present embodiment, the surgeon switches the electrode part 2 to a flat shape using the treatment tool 3 so that the one surface 9 side of the electrode part 2 faces the nerve tissue N. To place. And the electrode part 2 is wound around the nerve tissue N, making the electrode 10 contact | abut to the nerve tissue N by switching the shape of the electrode part 2 to a curved shape with the treatment tool 3. FIG.
For this reason, for example, even when the nerve tissue N is between crowded tissues, the electrode portion 2 is switched to a flat shape and then brought closer to the nerve tissue N, whereby the electrode portion 2 is moved to the nerve tissue N of the patient. It is possible to reliably and easily attach to a predetermined voltage.

また、湾曲形状の電極部2のガイド孔11に伸展部材13を挿通し係合させることで、電極部2を平坦形状に切り替える。そして、電極部2の一方の面9aを神経組織Nに近づけた状態で、押え棒14を電極部2に当接させつつガイド孔11から伸展部材13を引き抜くことで電極部2が湾曲形状に戻るので、電極部2を神経組織Nに容易に巻きつけることができる。
さらに、電極10は電極支持体9の一方の面9a側のみに設けられているので、電極10が神経組織N以外の組織に接触するのを防止することができる。
Further, the extension member 13 is inserted into and engaged with the guide hole 11 of the curved electrode portion 2 to switch the electrode portion 2 to a flat shape. Then, in a state where the one surface 9a of the electrode portion 2 is close to the nerve tissue N, the electrode portion 2 is curved by pulling out the extending member 13 from the guide hole 11 while the presser bar 14 is brought into contact with the electrode portion 2. Since it returns, the electrode part 2 can be easily wound around the nerve tissue N.
Furthermore, since the electrode 10 is provided only on the one surface 9a side of the electrode support 9, the electrode 10 can be prevented from coming into contact with a tissue other than the nerve tissue N.

なお、本実施形態では、電極支持体9の軸線C1方向の両端部にガイド孔11をそれぞれ形成した。しかし、電極支持体9に形成するガイド孔11の数に制限はなく、3つ以上でもよいし、図13に示す変形例のように1つでもよい。
また、本実施形態では、電極支持体9に形成されたガイド孔11の断面形状は円形であった。しかし、ガイド孔11の断面形状は、円形に限ることなく、楕円形状や、図14に示すガイド孔(電極側係合部)18のように矩形形状等の多角形形状でもよい。ガイド孔の断面形状を多角形形状とし、伸展部材の形状をこのガイド孔に対応する形状とすることで、伸展部材がガイド孔内で自身の軸線回りに回転するのを防止し、安定した形状切り替えを行うことができる。
In the present embodiment, the guide holes 11 are formed at both ends of the electrode support 9 in the direction of the axis C1. However, the number of guide holes 11 formed in the electrode support 9 is not limited, and may be three or more, or may be one as in the modification shown in FIG.
Moreover, in this embodiment, the cross-sectional shape of the guide hole 11 formed in the electrode support body 9 was circular. However, the cross-sectional shape of the guide hole 11 is not limited to a circular shape, and may be an elliptical shape or a polygonal shape such as a rectangular shape such as a guide hole (electrode-side engagement portion) 18 shown in FIG. By making the cross-sectional shape of the guide hole a polygonal shape and the shape of the extension member corresponding to this guide hole, the extension member is prevented from rotating around its own axis in the guide hole, and a stable shape Switching can be done.

また、本実施形態では、ガイド孔11は湾曲方向D1に平行に延びるように形成されているが、図15に示すガイド孔21のように、湾曲方向D1に間隔をおいて複数形成されてもよい。
この場合、電極部2を平坦形状に伸ばしてガイド孔21に伸展部材13を係合させたときは、図16および図17に示すように、それぞれの伸展部材13に対して複数のガイド孔21が係合されることになる。
In this embodiment, the guide hole 11 is formed so as to extend in parallel to the bending direction D1, but a plurality of guide holes 11 may be formed at intervals in the bending direction D1 as in the guide hole 21 shown in FIG. Good.
In this case, when the electrode portion 2 is extended into a flat shape and the extension member 13 is engaged with the guide hole 21, a plurality of guide holes 21 are provided for each extension member 13 as shown in FIGS. 16 and 17. Will be engaged.

また、本実施形態では、図18に示すように、電極支持体9の先端側に、先端側に向かうほど幅が狭くなる先細り部24を設けてもよい。このように構成することで、電極部2の先端側を神経組織Nと周辺組織Mとの間に挿入するときの挿入性を向上させることができる。
そして、本実施形態では、図19に示すように、処置具3の伸展部材13に代えて、所定の方向に延びる長さが伸展部材13より長い伸展部材27を有する処置具28を備えることで、一対の伸展部材27に一度に複数の電極部2を取り付けてもよい。このように構成することで、処置具28をトロッカーTから患者の体外に取り出すことなく、処置具28で一度に複数の電極部2を線状組織等に取り付けることができる。
In the present embodiment, as shown in FIG. 18, a tapered portion 24 whose width becomes narrower toward the distal end side may be provided on the distal end side of the electrode support 9. By comprising in this way, the insertion property at the time of inserting the front end side of the electrode part 2 between the nerve tissue N and the surrounding tissue M can be improved.
In this embodiment, as shown in FIG. 19, instead of the extension member 13 of the treatment instrument 3, a treatment instrument 28 having an extension member 27 whose length extending in a predetermined direction is longer than that of the extension member 13 is provided. A plurality of electrode portions 2 may be attached to the pair of extending members 27 at a time. By configuring in this way, a plurality of electrode portions 2 can be attached to a linear tissue or the like at once with the treatment instrument 28 without taking the treatment instrument 28 out of the patient's body from the trocar T.

さらに、本実施形態では、図20に示すように、外力が作用していない自然状態で略半分に折れるように曲がり、内側に神経組織Nを挟む湾曲形状となるように構成された電極部31であってもよい。
本変形例では、電極部31は、弾性材料でシート状に形成された電極支持体(絶縁部材)32と、電極支持体32の内側の面32aに設けられた一対の電極33とを有している。電極33は、弾性を有する金属材料等で板状に形成されるとともに、中央部に自然状態で所定の湾曲した形状になる曲がり癖部33aが設けられている。
また、本変形例では、ガイド孔(電極側係合部)34は、電極支持体32における内側の面32aと、内側の面32aとは反対側の外側の面32bとの間に形成されている。ガイド孔34をこのように形成することにより、電極支持体32の最大厚さを抑えることができる。
Furthermore, in the present embodiment, as shown in FIG. 20, the electrode portion 31 is configured to bend so as to be folded in substantially half in a natural state where no external force is applied, and to have a curved shape sandwiching the nerve tissue N inside. It may be.
In this modification, the electrode unit 31 includes an electrode support (insulating member) 32 formed in a sheet shape with an elastic material, and a pair of electrodes 33 provided on the inner surface 32 a of the electrode support 32. ing. The electrode 33 is formed in a plate shape with an elastic metal material or the like, and a bent flange portion 33a having a predetermined curved shape in a natural state is provided in the center portion.
In the present modification, the guide hole (electrode side engaging portion) 34 is formed between the inner surface 32a of the electrode support 32 and the outer surface 32b opposite to the inner surface 32a. Yes. By forming the guide hole 34 in this manner, the maximum thickness of the electrode support 32 can be suppressed.

(第2実施形態)
次に、本発明の第2実施形態について図21から図24を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図21に示すように、本実施形態の電極システム41は、第1実施形態の電極システム1の電極部2に代えて電極部42を備えている。
電極部42は、外力が作用していない自然状態で神経組織Nに所定の方向回りに螺旋状に巻きつくように構成されている。
本実施形態では、電極部42は、弾性材料でシート状に形成された電極支持体(絶縁部材)43と、電極支持体43の内側の面43aに設けられた一対の電極44とを有している。
また、電極支持体43には、自身が螺旋状に湾曲する湾曲方向D2に平行に延びるガイド孔(電極側係合部)45が形成されていて、図22に示すように、伸展部材13が着脱可能に係合する。
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. 21 to 24. However, the same parts as those of the above embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only differences will be described. explain.
As shown in FIG. 21, the electrode system 41 of this embodiment is provided with an electrode part 42 instead of the electrode part 2 of the electrode system 1 of the first embodiment.
The electrode portion 42 is configured to be spirally wound around the nerve tissue N around a predetermined direction in a natural state where no external force is applied.
In the present embodiment, the electrode portion 42 includes an electrode support (insulating member) 43 formed in a sheet shape with an elastic material, and a pair of electrodes 44 provided on the inner surface 43 a of the electrode support 43. ing.
In addition, the electrode support 43 is formed with a guide hole (electrode-side engagement portion) 45 extending in parallel with the bending direction D2 in which the electrode support 43 curves in a spiral shape, and as shown in FIG. Engage in a detachable manner.

このように構成された本実施形態の電極システム41によれば、電極部42を神経組織Nに確実かつ容易に取り付けることができる。
さらに、電極部42を神経組織Nの周りに複数回巻き付けることができるので、電極部42の神経組織Nへの取り付けがより確実になる。また、電極部42の平坦形状における幅寸法L(図22を参照)を抑え、電極部42を挿通するのに必要なトロッカーの内径を小さくすることができる。
According to the electrode system 41 of the present embodiment configured as described above, the electrode portion 42 can be reliably and easily attached to the nerve tissue N.
Furthermore, since the electrode part 42 can be wound around the nerve tissue N a plurality of times, the attachment of the electrode part 42 to the nerve tissue N becomes more reliable. Moreover, the width dimension L (refer FIG. 22) in the flat shape of the electrode part 42 can be suppressed, and the inner diameter of the trocar required to penetrate the electrode part 42 can be made small.

また、本実施形態では、電極部42に代えて、図23に示す変形例のように、外力が作用していない自然状態で神経組織Nの軸線C6に所定の方向回りに螺旋状に巻きつくように構成された部分と、所定の方向と反対方向回りに螺旋状に巻きつくように構成された部分との先端同士を接続した形状の電極部47を備えてもよい。本変形例では、電極部47に電極44が一対備えられ、それぞれの電極44は、略螺旋状に形成された電極支持体(絶縁部材)48の内側の面48aに、湾曲方向D3、D4に平行に延びるように配置されている。これら、湾曲方向D3と湾曲方向D4は、軸線C6回りの巻き方向が互いに異なるものである。
この電極部47のガイド孔45に伸展部材13を挿通させると、図24に示すように、電極支持体48は略V字状の平坦形状に切り替えられる。
なお、本変形例では、リードボディ49の先端側に設けられた接続部50に押え棒14を当接させた状態で、電極部47から伸展部材13を取り外すことになる。
Further, in the present embodiment, instead of the electrode portion 42, as in the modification shown in FIG. 23, the axis C6 of the nerve tissue N is spirally wound around a predetermined direction in a natural state where no external force is acting. An electrode portion 47 having a shape in which the tips of a portion configured as described above and a portion configured to spirally wind around a direction opposite to a predetermined direction are connected to each other may be provided. In this modification, a pair of electrodes 44 are provided in the electrode portion 47, and each electrode 44 is provided on a surface 48a on the inner side of an electrode support (insulating member) 48 formed in a substantially spiral shape in the bending directions D3 and D4. It arrange | positions so that it may extend in parallel. The bending direction D3 and the bending direction D4 are different from each other in the winding direction around the axis C6.
When the extending member 13 is inserted through the guide hole 45 of the electrode portion 47, the electrode support 48 is switched to a substantially V-shaped flat shape as shown in FIG.
In this modification, the extension member 13 is removed from the electrode portion 47 in a state where the presser bar 14 is in contact with the connection portion 50 provided on the distal end side of the lead body 49.

(第3実施形態)
次に、本発明の第3実施形態について図25から図30を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図25に示すように、本実施形態の電極システム61は、電極部2に代えて電極部62を備え、処置具3に代えて、伸展機構64を有する処置具63を備えている。なお、電極部62は、外力が作用していない自然状態において、図26に示すように湾曲形状となるように形成されている。
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. 25 to 30. However, the same parts as those of the above-described embodiment will be denoted by the same reference numerals and the description thereof will be omitted, and only differences will be described. explain.
As shown in FIG. 25, the electrode system 61 of the present embodiment includes an electrode unit 62 instead of the electrode unit 2, and includes a treatment tool 63 having an extension mechanism 64 instead of the treatment tool 3. The electrode portion 62 is formed to have a curved shape as shown in FIG. 26 in a natural state where no external force is applied.

図26および図27に示すように、電極部62には、電極部2のガイド孔11に代えて、電極支持体9における一方の面9aと他方の面9bとの間に形成された一対のガイド孔(電極側係合部)65が形成されている。また、リードボディ6は、電極支持体9の基端側の中央部において上記実施形態より比較的狭い範囲で接続されている。   As shown in FIGS. 26 and 27, the electrode portion 62 has a pair of electrodes formed between one surface 9 a and the other surface 9 b of the electrode support 9 in place of the guide hole 11 of the electrode portion 2. A guide hole (electrode side engaging portion) 65 is formed. Further, the lead body 6 is connected in a relatively narrow range in the central portion on the base end side of the electrode support 9 compared to the above embodiment.

図25に示すように、伸展機構64は、一対の伸展部材60と、電極支持体9において伸展部材60が取り外される際に当接される押え棒(当接部材)66と、一対の伸展部材60の間隔を調整可能な部材間隔調整部67とを有して構成されている。
伸展部材60は、金属のワイヤー等で略棒状に形成された部材である。
部材間隔調整部67は、伸展部材60の基端部に固定され一対の伸展部材60が略平行に並ぶように支持するとともに、自身が弾性変形して伸展部材60間の間隔を所望の値に調整可能なバネ部材68と、内部にバネ部材68を挿通しバネ部材68の形状を規制するパイプ69とを備えている。
バネ部材68は金属のワイヤー等で伸展部材60と一体に形成されていて、バネ部材68には、ワイヤーがX字状に交差する交差部68aが設けられている。そして、パイプ69の先端の内周面が交差部68aに当接する部分が変化することで、一対の伸展部材60間の間隔が変化する。
As shown in FIG. 25, the extension mechanism 64 includes a pair of extension members 60, a presser bar (abutment member) 66 that comes into contact with the electrode support 9 when the extension member 60 is removed, and a pair of extension members. A member interval adjustment unit 67 capable of adjusting the interval of 60 is provided.
The extension member 60 is a member formed in a substantially rod shape with a metal wire or the like.
The member interval adjusting unit 67 is fixed to the base end portion of the extension member 60 and supports the pair of extension members 60 so as to be arranged in parallel. The member interval adjustment unit 67 elastically deforms itself to set the interval between the extension members 60 to a desired value. An adjustable spring member 68 and a pipe 69 that passes through the spring member 68 and restricts the shape of the spring member 68 are provided.
The spring member 68 is integrally formed with the extension member 60 using a metal wire or the like, and the spring member 68 is provided with an intersection 68a where the wires intersect in an X shape. And the space | interval between a pair of extension members 60 changes because the part in which the internal peripheral surface of the front-end | tip of the pipe 69 contact | abuts the cross | intersection part 68a changes.

次に、以上のように構成された電極システム61を用いて神経組織Nに電極部62を取り付ける手技について説明する。
術者は、湾曲形状の電極部62を伸ばし、図27に示すように所定の伸展方向D5に伸展した平坦形状にする。そして、平坦形状にした電極部62を図25に示すように両端部から伸展方向D5に平行な所定の軸線回りに巻いておく(導入時形状形成工程)。
続いて、図28に示すように、この巻かれた状態の電極部62のガイド孔65に互いの間隔を調整した伸展部材60をそれぞれ挿入して係合させ、巻かれた電極部62の形状が変形しないように保持する。そして、電極部62を処置具63とともにトロッカーT内を挿通させる。
Next, a technique for attaching the electrode unit 62 to the nerve tissue N using the electrode system 61 configured as described above will be described.
The surgeon extends the curved electrode portion 62 to a flat shape extended in a predetermined extension direction D5 as shown in FIG. And the electrode part 62 made into the flat shape is wound around the predetermined | prescribed axis line parallel to the extending direction D5 from both ends, as shown in FIG. 25 (shape formation process at the time of introduction).
Subsequently, as shown in FIG. 28, the extending members 60 adjusted in distance from each other are inserted into and engaged with the guide holes 65 of the wound electrode part 62, and the shape of the wound electrode part 62 is formed. Hold so as not to deform. Then, the electrode portion 62 is inserted through the trocar T together with the treatment tool 63.

次に、患者の胸腔内において、図29に示すように、パイプ69に対してバネ部材68を先端側に押し出すことで、電極部62の伸展方向D5に平行な所定の軸線回りの巻回を解き電極部62を伸展方向D5に直交する方向に広げる。このとき、電極部62のガイド孔65には伸展部材60が係合しているので、電極部62は一定の剛性を有して平坦形状になっている。
そして、図30に示すように、電極部62の先端側を神経組織Nと周辺組織Mとの間に挿入させ、押え棒66の先端をリードボディ6の先端側に係合させながら押え棒66に対して伸展部材60を後退させることで、電極部62が先端側から神経組織Nに巻きついていく。
Next, in the chest cavity of the patient, as shown in FIG. 29, the spring member 68 is pushed toward the distal end side with respect to the pipe 69, so that the electrode portion 62 is wound around a predetermined axis parallel to the extending direction D5. The unwinding electrode part 62 is spread in the direction orthogonal to the extending direction D5. At this time, since the extending member 60 is engaged with the guide hole 65 of the electrode portion 62, the electrode portion 62 has a certain rigidity and is flat.
Then, as shown in FIG. 30, the distal end side of the electrode portion 62 is inserted between the nerve tissue N and the surrounding tissue M, and the presser bar 66 is engaged while the distal end of the presser bar 66 is engaged with the distal end side of the lead body 6. In contrast, by retracting the extension member 60, the electrode portion 62 is wound around the nerve tissue N from the distal end side.

以上説明したように、本実施形態の電極システム61によれば、電極部62を神経組織Nに確実かつ容易に取り付けることができる。
さらに、電極部62を伸展方向D5に平行な所定の軸線回りに巻いた状態でトロッカーT内を挿通させることで、電極部62の伸展方向D5に直交する平面における断面での幅を小さくし、電極部62を挿通させるのに必要なトロッカーTの内径を抑えて、患者の侵襲を低減することができる。
As described above, according to the electrode system 61 of the present embodiment, the electrode unit 62 can be reliably and easily attached to the nerve tissue N.
Further, by inserting the electrode portion 62 around the predetermined axis parallel to the extending direction D5 and passing through the trocar T, the width of the cross section in the plane orthogonal to the extending direction D5 of the electrode portion 62 is reduced. The invasiveness of the patient can be reduced by suppressing the inner diameter of the trocar T necessary for inserting the electrode part 62.

(第4実施形態)
次に、本発明の第4実施形態について図31から図35を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図31に示すように、本実施形態の電極システム81は、神経組織Nに所定の電圧を印加する電極部82と、湾曲形状の電極部82を平坦形状に切り替えて保持するとともに保持を解除可能な伸展機構83を有する処置具84とを備えて構成されている。
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 31 to 35. However, the same parts as those of the above embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only differences will be described. explain.
As shown in FIG. 31, the electrode system 81 of the present embodiment can switch and hold the electrode part 82 for applying a predetermined voltage to the nerve tissue N and the curved electrode part 82 to a flat shape and release the holding. And a treatment instrument 84 having a flexible extension mechanism 83.

図31および図32に示すように、電極部82は、外力が作用していない自然状態で湾曲した湾曲形状に形成され、平坦な平坦形状に切り替え(変形)可能な第一の腕部85、第二の腕部86を有していて、第一の腕部85に2つの第二の腕部86を接続することで構成されている。
第一の腕部85、第二の腕部86は、絶縁性を有する弾性材料でシート状に形成された電極支持体(絶縁部材)87、88をそれぞれ備えている。
電極支持体87は、一方の端部87aから他方の端部87bまで所定の軸線C2回りの一方側に湾曲し、電極支持体88は、一方の端部88aから他方の端部88bまで軸線C2回りの他方側に湾曲している。そして、電極支持体88は電極支持体87の軸線C2方向の両側に配置され、電極支持体87の他方の端部87bと電極支持体88の他方の端部88bとが、一体に形成されることにより互いに接続されている。
電極支持体87は軸線C2回りにほぼ一周分湾曲した形状となっているが、電極支持体88は軸線C2回り半周程度湾曲した形状となっている。
As shown in FIGS. 31 and 32, the electrode portion 82 is formed in a curved shape that is curved in a natural state where no external force is applied, and can be switched (deformed) to a flat flat shape, It has a second arm portion 86 and is configured by connecting two second arm portions 86 to the first arm portion 85.
The first arm portion 85 and the second arm portion 86 include electrode support bodies (insulating members) 87 and 88 formed in a sheet shape from an insulating elastic material, respectively.
The electrode support 87 is curved to one side around a predetermined axis C2 from one end 87a to the other end 87b, and the electrode support 88 is an axis C2 from one end 88a to the other end 88b. Curved on the other side of the circumference. The electrode support 88 is disposed on both sides of the electrode support 87 in the direction of the axis C2, and the other end 87b of the electrode support 87 and the other end 88b of the electrode support 88 are integrally formed. Are connected to each other.
The electrode support 87 has a shape that is curved about one turn around the axis C2, while the electrode support 88 has a shape that is curved about a half turn around the axis C2.

電極支持体87の一方の端部87aには、可撓性を有する糸状体89の一端が接続されていて、糸状体89の他端はリング状の導入部90に接続されている。
第二の腕部86は、リードボディ6を介してそれぞれ神経刺激装置5と電気的に接続された電極91を備えていて、電極91は、それぞれの電極支持体88が湾曲形状であるときの内側の面88cに配置されている。
One end 87 a of the electrode support 87 is connected to one end of a flexible thread-like body 89, and the other end of the thread-like body 89 is connected to a ring-shaped introduction part 90.
The second arm portion 86 includes electrodes 91 each electrically connected to the nerve stimulating device 5 via the lead body 6, and the electrodes 91 are arranged on the inner side when each electrode support 88 has a curved shape. Arranged on the surface 88c.

図31に示すように、伸展機構83は、略J字状に形成され、導入部90に係合して第一の腕部85の一方の端部(一端)87a側を保持する牽引フック(一端側保持部)94と、第一の腕部85の他方の端部(他端)87b側に係止される一対の爪部(他端側係止部)95と、牽引フック94と一対の爪部95との間隔を調整可能な間隔調整機構96とを有する。
そして、間隔調整機構96は、略筒状に形成された本体部97と、棒状に形成され本体部97内にスライド可能に挿通されたスライド部材98とを有している。
牽引フック94はスライド部材98の先端部に、一対の爪部95は本体部97の先端部にそれぞれ固定されている。
As shown in FIG. 31, the extension mechanism 83 is formed in a substantially J shape, and engages with the introduction portion 90 to hold one end (one end) 87 a side of the first arm portion 85 ( One end holding portion) 94, a pair of claw portions (other end side locking portions) 95 locked to the other end (other end) 87b side of the first arm portion 85, a tow hook 94 and a pair. And an interval adjusting mechanism 96 capable of adjusting the interval with the claw portion 95.
The interval adjusting mechanism 96 includes a main body portion 97 formed in a substantially cylindrical shape, and a slide member 98 formed in a rod shape and slidably inserted into the main body portion 97.
The pulling hook 94 is fixed to the tip of the slide member 98, and the pair of claw portions 95 are fixed to the tip of the main body 97.

次に、以上のように構成された電極システム81を用いて神経組織Nに電極部82を取り付ける手技について説明する。
図33および図34に示すように、術者は電極部82の導入部90に牽引フック94を係合させて保持するとともに、第二の腕部86の他方の端部88bに爪部95を係止させる。そして、本体部97に対してスライド部材98を先端側に移動させ牽引フック94と一対の爪部95との間隔を広げることで、湾曲形状の第一の腕部85を伸ばして平坦形状にして保持する。
そして、電極部82を処置具84とともに不図示のトロッカー内を挿通させる。
Next, a technique for attaching the electrode portion 82 to the nerve tissue N using the electrode system 81 configured as described above will be described.
As shown in FIGS. 33 and 34, the operator engages and holds the traction hook 94 on the introduction portion 90 of the electrode portion 82, and locks the claw portion 95 on the other end 88b of the second arm portion 86. Let Then, by moving the slide member 98 toward the distal end side with respect to the main body portion 97 and widening the distance between the traction hook 94 and the pair of claw portions 95, the curved first arm portion 85 is extended to a flat shape. Hold.
Then, the electrode portion 82 is inserted through the trocar (not shown) together with the treatment instrument 84.

次に、患者の胸腔内において、図34に示すように、処置具84を操作して、電極支持体87の内側の面87c側が神経組織Nに対向するように配置する。ここで、本体部97の位置を固定しながらスライド部材98を基端側に移動させると、第一の腕部85が湾曲形状に戻りながら神経組織Nを第二の腕部86に囲まれる位置Pに移動させる。そして、図35に示すように、第一の腕部85は神経組織Nの周囲を範囲R1にわたり巻き付き、第二の腕部86は範囲R2にわたり巻き付く。なお、必要に応じて、導入部90を不図示の把持鉗子等で牽引し、第一の腕部85が神経組織Nに巻きつくのを補助してもよい。
続いて、術者はトロッカーから導入した不図示の切断具等により糸状体89を切断し、神経組織Nに巻きついた電極部82を処置具84から取り外す。
Next, in the chest cavity of the patient, as shown in FIG. 34, the treatment instrument 84 is operated so that the inner surface 87 c side of the electrode support 87 is opposed to the nerve tissue N. Here, when the slide member 98 is moved to the proximal end side while fixing the position of the main body 97, the nerve tissue N is returned to the position P surrounded by the second arm 86 while the first arm 85 returns to the curved shape. Move. And as shown in FIG. 35, the 1st arm part 85 winds the circumference | surroundings of the nerve tissue N over the range R1, and the 2nd arm part 86 winds over the range R2. If necessary, the introduction unit 90 may be pulled with a grasping forceps or the like (not shown) to assist the first arm unit 85 around the nerve tissue N.
Subsequently, the surgeon cuts the filamentous body 89 with a cutting tool (not shown) or the like introduced from the trocar and removes the electrode portion 82 wound around the nerve tissue N from the treatment tool 84.

以上説明したように、本実施形態の電極システム81によれば、電極部82を神経組織Nに確実かつ容易に取り付けることができる。
なお、本実施形態では、電極部82に糸状体89および導入部90を備えず、絶縁部材87の一方の端部87aに貫通孔を形成し、この貫通孔が牽引フック94に係合するように構成してもよい。
また、電極部は、第二の腕部86の軸線の両側に第一の腕部85をそれぞれ配置し、電極支持体88の他方の端部88bと電極支持体87の他方の端部87bとを一体に形成することで、第二の腕部86と第一の腕部85とを接続した構成にしてもよい。
As described above, according to the electrode system 81 of the present embodiment, the electrode portion 82 can be reliably and easily attached to the nerve tissue N.
In the present embodiment, the electrode portion 82 is not provided with the filament 89 and the introduction portion 90, and a through hole is formed in one end portion 87 a of the insulating member 87 so that the through hole engages with the pulling hook 94. You may comprise.
In addition, the electrode portion includes first arm portions 85 arranged on both sides of the axis of the second arm portion 86, and the other end portion 88 b of the electrode support body 88 and the other end portion 87 b of the electrode support body 87 are integrated. The second arm portion 86 and the first arm portion 85 may be connected by forming the second arm portion 86 and the first arm portion 85.

(第5実施形態)
次に、本発明の第5実施形態について図36から図38を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図36および図37に示すように、本実施形態の電極システム101は、神経組織Nに所定の電圧を印加する電極部102と、神経組織Nに電極部102を取り付けるための処置具103とを備えている。
電極部102は、前記実施形態の電極部2に対してガイド孔11が形成されていないことのみ異なるものである。
そして、本実施形態の処置具103は、前記実施形態の処置具3の伸展機構12に代えて、電極支持体9の一方の面9a側および他方の面9b側から電極部102を挟持して電極部102を平坦形状に保持するとともに、この挟持を解除可能な伸展機構104を有している。
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. 36 to 38. However, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only differences will be described. explain.
As shown in FIGS. 36 and 37, the electrode system 101 of the present embodiment includes an electrode unit 102 that applies a predetermined voltage to the nerve tissue N, and a treatment tool 103 for attaching the electrode unit 102 to the nerve tissue N. I have.
The electrode part 102 is different from the electrode part 2 of the embodiment only in that the guide hole 11 is not formed.
And the treatment tool 103 of this embodiment is holding the electrode part 102 from the one surface 9a side and the other surface 9b side of the electrode support body 9 instead of the extension mechanism 12 of the treatment tool 3 of the said embodiment. While holding the electrode part 102 in a flat shape, it has the extension mechanism 104 which can cancel | release this clamping.

伸展機構104は、湾曲形状に形成された電極部102の湾曲を伸ばして電極部伸展方向D6に伸展させたものを、電極部伸展方向D6と自身の軸線C3方向とが平行になるように内部に収容するパイプ(管状部材)107と、パイプ107内の電極部102を軸線C3方向の先端側に押し出す押し出し棒(押し出し部材)108とを有している。
パイプ107の軸線に直交する平面における断面は、平坦に潰れた形状に形成され、パイプ107の先端部における電極部102が湾曲する側には、先端側に向かうほど軸線C3側に湾曲する案内部107aが設けられている。
The extension mechanism 104 is formed by extending the curve of the electrode part 102 formed in a curved shape and extending it in the electrode part extension direction D6 so that the electrode part extension direction D6 and its own axis C3 direction are parallel to each other. A pipe (tubular member) 107 accommodated in the pipe 107, and an extruding rod (extruding member) 108 for extruding the electrode portion 102 in the pipe 107 toward the distal end side in the direction of the axis C3.
A cross section in a plane orthogonal to the axis of the pipe 107 is formed into a flattened shape, and a guide portion that curves toward the axis C3 toward the tip side on the side where the electrode portion 102 curves at the tip portion of the pipe 107. 107a is provided.

このように構成された電極システム101を用いた手技は以下のような手順で行われる。術者は処置具103を操作して、電極支持体9の一方の面9a側が神経組織Nに対向するように配置させた状態で、図38に示すように、パイプ107の位置を固定しながら押し出し棒108を先端側に押し出す。すると、電極部102は電極部伸展方向D6とパイプ107の軸線C3方向とが平行になるようにパイプ107の内部に収容されていたので、電極部102のうちパイプ107の先端側から突出した部分は軸線C3に直交する所定の方向回りに湾曲して神経組織Nに巻きつく。
以上説明したように、本実施形態の電極システム101によれば、電極部102を神経組織Nに確実かつ容易に取り付けることができる。
また、電極部伸展方向D6に伸展させた電極部102をパイプ107の内部に収容することで電極部102の形状を切り替え、手技をより容易に行うことができる。
The procedure using the electrode system 101 configured as described above is performed in the following procedure. The surgeon operates the treatment instrument 103 and fixes the position of the pipe 107 as shown in FIG. 38 in a state where the one surface 9a side of the electrode support 9 is arranged to face the nerve tissue N. The push rod 108 is pushed to the tip side. Then, since the electrode portion 102 was accommodated inside the pipe 107 so that the electrode portion extending direction D6 and the axis C3 direction of the pipe 107 were parallel, a portion of the electrode portion 102 protruding from the tip side of the pipe 107 Is bent around a predetermined direction orthogonal to the axis C3 and wraps around the nerve tissue N.
As described above, according to the electrode system 101 of this embodiment, the electrode unit 102 can be reliably and easily attached to the nerve tissue N.
Moreover, by accommodating the electrode part 102 extended in the electrode part extension direction D6 inside the pipe 107, the shape of the electrode part 102 can be switched, and the procedure can be performed more easily.

(第6実施形態)
次に、本発明の第6実施形態について図39から図41を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図39に示すように、本実施形態の電極システム111の処置具113は、第5実施形態の電極システム101の処置具103が備えている伸展機構104に代えて伸展機構114を備えている。
図39および図40に示すように、伸展機構114は、電極支持体9の一方の面9a側に配置されるとともに処置具113の基端側に移動可能な第一のヘラ部材(第一の挟持部材)115と、電極支持体9の他方の面9b側に配置される第二のヘラ部材(第二の挟持部材)116と、電極支持体9の基端側に当接するパイプ(支持部材)117とを有している。
(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIGS. 39 to 41. However, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only differences will be described. explain.
As shown in FIG. 39, the treatment tool 113 of the electrode system 111 of the present embodiment includes an extension mechanism 114 instead of the extension mechanism 104 provided in the treatment tool 103 of the electrode system 101 of the fifth embodiment.
As shown in FIGS. 39 and 40, the extension mechanism 114 is disposed on the one surface 9a side of the electrode support 9 and is movable to the proximal end side of the treatment instrument 113 (first spatula member (first A clamping member) 115, a second spatula member (second clamping member) 116 disposed on the other surface 9b side of the electrode support 9, and a pipe (supporting member) that contacts the proximal end side of the electrode support 9 ) 117.

第二のヘラ部材116はパイプ117に対して略平行に配置されるとともに、パイプ117と一体に形成されることで自身の基端部がパイプ117の先端部に接続されている。
第一のヘラ部材115は、第二のヘラ部材116に対して所定の間隔をおいて対向する位置に配置可能であるとともに、パイプ117の軸線C4方向に移動可能に配置されている。第一のヘラ部材115の先端部には、先端側に向かうほど第二のヘラ部材116から離間するように形成された案内部115aが設けられている。第一のヘラ部材115の基端部は、パイプ117にスライド可能に挿通された操作棒118の先端部に接続されている。
The second spatula member 116 is disposed substantially parallel to the pipe 117 and is formed integrally with the pipe 117 so that its base end is connected to the tip of the pipe 117.
The first spatula member 115 can be disposed at a position facing the second spatula member 116 at a predetermined interval, and is disposed so as to be movable in the direction of the axis C4 of the pipe 117. The first spatula member 115 is provided with a guide portion 115a formed at a distal end portion thereof so as to be separated from the second spatula member 116 toward the distal end side. The proximal end portion of the first spatula member 115 is connected to the distal end portion of the operation rod 118 that is slidably inserted into the pipe 117.

このように構成された電極システム111を用いた手技は以下のような手順で行われる。
図39に示すように、まず、術者は、第一のヘラ部材115と第二のヘラ部材116との間に電極部102を介装し、第一のヘラ部材115と第二のヘラ部材116とで電極部102を挟持して平坦形状にする。このとき、第一のヘラ部材115が移動する軸線C4方向と電極部102の湾曲を伸ばして伸展させる電極部伸展方向D6とが平行になるように電極部102を挟持させることが好ましい。そして、電極部102を処置具113とともに不図示のトロッカー内を挿通させる。
続いて、不図示のナイフにより周辺組織Mを切断して神経組織Nを露出させる。このとき、第一のヘラ部材115の先端部に設けられた案内部115aを神経組織Nに掛けて神経組織Nを引き出すことにより、神経組織Nを周囲の周辺組織Mから容易に露出させることができる。
The procedure using the electrode system 111 configured as described above is performed in the following procedure.
As shown in FIG. 39, first, the operator interposes the electrode portion 102 between the first spatula member 115 and the second spatula member 116, and the first spatula member 115 and the second spatula member. 116, the electrode portion 102 is sandwiched between the two to form a flat shape. At this time, it is preferable to clamp the electrode part 102 so that the axis C4 direction in which the first spatula member 115 moves and the electrode part extending direction D6 in which the curve of the electrode part 102 is extended and extended are parallel. Then, the electrode part 102 is inserted through the trocar (not shown) together with the treatment tool 113.
Subsequently, the peripheral tissue M is cut with a knife (not shown) to expose the nerve tissue N. At this time, the nerve tissue N can be easily exposed from the surrounding tissue M by pulling the nerve tissue N by placing the guide portion 115a provided at the tip of the first spatula member 115 on the nerve tissue N. it can.

次に、処置具113を操作して、電極支持体9の一方の面9a側が神経組織Nに対向するように配置させた状態で、パイプ117の位置を固定しながら操作棒118を基端側に移動させて、第一のヘラ部材115を後退させる。
すると、電極部102は電極部伸展方向D6とパイプ117の軸線C4方向とが平行になるように第一のヘラ部材115と第二のヘラ部材116との間に挟持されていたので、図41に示すように、電極部102のうち第一のヘラ部材115の先端側から突出した部分は軸線C4に直交する所定の方向回りに湾曲して神経組織Nに巻きつく。
以上説明したように、本実施形態の電極システム111によれば、電極部102を神経組織Nに確実かつ容易に取り付けることができる。
また、第一のヘラ部材115と第二のヘラ部材116との間で電極部102を挟持するので、処置具113に電極部102を装着して電極部102の形状をさらに容易に切り替えることができる。
Next, the treatment tool 113 is operated, and the operation rod 118 is fixed to the proximal side while fixing the position of the pipe 117 in a state where the one surface 9a side of the electrode support 9 is arranged to face the nerve tissue N. To move the first spatula member 115 backward.
Then, since the electrode part 102 was clamped between the first spatula member 115 and the second spatula member 116 so that the electrode part extension direction D6 and the axis C4 direction of the pipe 117 were parallel, FIG. As shown, the portion of the electrode portion 102 that protrudes from the distal end side of the first spatula member 115 curves around a predetermined direction perpendicular to the axis C4 and wraps around the nerve tissue N.
As described above, according to the electrode system 111 of the present embodiment, the electrode unit 102 can be reliably and easily attached to the nerve tissue N.
Moreover, since the electrode part 102 is clamped between the first spatula member 115 and the second spatula member 116, the electrode part 102 can be attached to the treatment instrument 113 and the shape of the electrode part 102 can be switched more easily. it can.

(第7実施形態)
次に、本発明の第7実施形態について図42から図46を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図42に示すように、本実施形態の電極システム121は、神経組織Nに所定の電圧を印加する電極部122と、神経組織Nに電極部122を取り付けるための処置具123とを備えている。
(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with reference to FIGS. 42 to 46. However, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only differences will be described. explain.
As shown in FIG. 42, the electrode system 121 of this embodiment includes an electrode part 122 that applies a predetermined voltage to the nerve tissue N, and a treatment instrument 123 for attaching the electrode part 122 to the nerve tissue N. .

電極部122は、外力が作用していない自然状態で平坦形状となるように形成され、その形状を神経組織Nに巻きつくように湾曲した湾曲形状に切り替え(変形)可能となっている。
電極部122は、前記実施形態の電極支持体9と、電極支持体9が湾曲形状になったときに湾曲の内側の面となる一方の面9aに設けられた一対の電極126と、電極支持体9より剛性が高い弾性材料で神経組織Nに巻きつくように湾曲した形状に形成された湾曲部材127とを有している。
電極126が電極10と異なる点は、電極126は外力が作用していない自然状態で平坦形状に形成され、自身の弾性により変形可能となっている点である。
そして、本実施形態の電極支持体9は、前記実施形態の一対のガイド孔11に代えて、一方の面9aに平行に延びて電極支持体9を貫通するガイド孔(電極側係合部)128が形成されている。ガイド孔128には、湾曲部材127を挿通させて係合させることができる。
The electrode portion 122 is formed to have a flat shape in a natural state where no external force is applied, and the shape can be switched (deformed) to a curved shape that is curved so as to wrap around the nerve tissue N.
The electrode portion 122 includes the electrode support 9 according to the above-described embodiment, a pair of electrodes 126 provided on one surface 9a that is an inner surface of the curve when the electrode support 9 is curved, and an electrode support And a bending member 127 formed into a curved shape so as to wrap around the nerve tissue N with an elastic material having higher rigidity than the body 9.
The electrode 126 is different from the electrode 10 in that the electrode 126 is formed in a flat shape in a natural state where no external force is applied and can be deformed by its own elasticity.
The electrode support 9 of the present embodiment replaces the pair of guide holes 11 of the above-described embodiment, and extends in parallel with one surface 9a and penetrates the electrode support 9 (electrode-side engagement portion). 128 is formed. The bending member 127 can be inserted into and engaged with the guide hole 128.

処置具123は、自然状態で平坦形状の電極部122を湾曲形状に切り替え可能な湾曲機構130を有している。
図43および図44に示すように、湾曲機構130は、電極支持体9を把持する把持部131と、一定の剛性を有して所定の方向に延びるように形成され、電極支持体9のガイド孔128に着脱可能に係合する補強部材132と、湾曲部材127を伸展した状態で保持するとともに伸展した湾曲部材127を押し出す押出し部133とを備えている。
なお、本実施形態では、補強部材132は押出し部133の一部を構成している。
The treatment instrument 123 has a bending mechanism 130 that can switch the flat electrode portion 122 to a curved shape in a natural state.
As shown in FIGS. 43 and 44, the bending mechanism 130 is formed so as to have a grip 131 for gripping the electrode support 9 and a predetermined rigidity and extend in a predetermined direction. The reinforcing member 132 is detachably engaged with the hole 128, and the pushing portion 133 that holds the bending member 127 in an extended state and pushes the extended bending member 127 is provided.
In the present embodiment, the reinforcing member 132 constitutes a part of the extruded portion 133.

押出し部133は、湾曲部材127を湾曲部材127の湾曲を伸ばす湾曲部伸展方向D7に伸展した状態で保持するパイプ134と、湾曲部伸展方向D7に伸展した湾曲部材127を湾曲部伸展方向D7に押し出す上記補強部材132とで構成されている。
補強部材132は、パイプ134に形成された貫通孔134aに挿通され、パイプ134に対してスライド可能となっている。
The pushing portion 133 holds the bending member 127 in a state where the bending member 127 is extended in the bending portion extension direction D7 that extends the bending of the bending member 127, and the bending member 127 extended in the bending portion extension direction D7 in the bending portion extension direction D7. The reinforcing member 132 is pushed out.
The reinforcing member 132 is inserted into a through hole 134 a formed in the pipe 134 and is slidable with respect to the pipe 134.

把持部131は、パイプ134の先端部の開口近傍に固定された固定部材135と、所定の位置に移動可能な移動部材136と、移動部材136に一端が接続された公知のリンク機構137と、リンク機構137の他端が接続された操作棒138とを備えている。
リンク機構137により、移動部材136は、間に電極支持体9を挟むように固定部材135に対向する位置と、固定部材135から離間する位置との間を移動することができる。
操作棒138は、パイプ134において貫通孔134aに平行に形成された補助孔134bにスライド可能に挿通されていて、パイプ134に対して操作棒138を牽引したときに電極支持体9の基端側を固定部材135と移動部材136とで把持し、パイプ134に対して操作棒138を押し込んだときに電極支持体9の把持を解消することができる。
The grip 131 includes a fixing member 135 fixed near the opening of the tip of the pipe 134, a moving member 136 movable to a predetermined position, a known link mechanism 137 having one end connected to the moving member 136, And an operation rod 138 to which the other end of the link mechanism 137 is connected.
By the link mechanism 137, the moving member 136 can move between a position facing the fixing member 135 and a position separating from the fixing member 135 so as to sandwich the electrode support 9 therebetween.
The operation rod 138 is slidably inserted into an auxiliary hole 134b formed in parallel with the through hole 134a in the pipe 134, and the proximal end side of the electrode support 9 when the operation rod 138 is pulled with respect to the pipe 134. Is held by the fixed member 135 and the moving member 136, and the holding of the electrode support 9 can be canceled when the operating rod 138 is pushed into the pipe 134.

次に、以上のように構成された電極システム121を用いて神経組織Nに電極部122を取り付ける手技について説明する。
術者は、電極部122のガイド孔128に補強部材132を挿通して係合させるとともに、電極部122と処置具123を不図示のトロッカー内を挿通させる。
ガイド孔128に補強部材132が挿通されているので、平坦形状の電極部122は一定の剛性を有している。このため、図45に示すように、電極部122を神経組織Nと周辺組織Mとの間に容易に挿入することができる。なお、このときには、神経組織Nが電極部122の一方の面9a側に配置されるように挿入する。
Next, a technique for attaching the electrode unit 122 to the nerve tissue N using the electrode system 121 configured as described above will be described.
The surgeon inserts the reinforcing member 132 into the guide hole 128 of the electrode part 122 and engages it, and inserts the electrode part 122 and the treatment instrument 123 through a trocar (not shown).
Since the reinforcing member 132 is inserted into the guide hole 128, the flat electrode portion 122 has a certain rigidity. For this reason, as shown in FIG. 45, the electrode part 122 can be easily inserted between the nerve tissue N and the surrounding tissue M. At this time, the nerve tissue N is inserted so as to be arranged on the one surface 9a side of the electrode portion 122.

続いて、把持部131で電極支持体9を把持した状態で、パイプ134の基端側から補強部材132を牽引し、電極部122およびパイプ134から補強部材132を取り外す。そして、図44に示すように、湾曲を伸ばして湾曲部伸展方向D7に伸展した湾曲部材127を、湾曲部伸展方向D7とパイプ134の軸線C5とが平行になるように貫通孔134aに挿入し、さらに湾曲部材127の基端側から補強部材132を貫通孔134aに再び挿入する。このとき、湾曲部材127が湾曲形状のであるときの内側の面127a側に神経組織Nがくるように、湾曲部材127を貫通孔134aに挿入する。
ここで、パイプ134に対して補強部材132を押し込むと、図46に示すように、電極部122のガイド孔128に湾曲部材127が挿入されていく。湾曲部材127は電極支持体9より剛性が高い弾性材料で形成されているので、パイプ134の先端側から突出した部分の湾曲部材127は湾曲形状に戻り、電極支持体9を湾曲形状に変化させる。
Subsequently, in a state where the electrode support 9 is gripped by the grip portion 131, the reinforcing member 132 is pulled from the proximal end side of the pipe 134, and the reinforcing member 132 is removed from the electrode portion 122 and the pipe 134. Then, as shown in FIG. 44, the bending member 127 that has been bent and extended in the bending portion extension direction D7 is inserted into the through hole 134a so that the bending portion extension direction D7 and the axis C5 of the pipe 134 are parallel to each other. Further, the reinforcing member 132 is inserted into the through hole 134a again from the base end side of the bending member 127. At this time, the bending member 127 is inserted into the through hole 134a so that the nerve tissue N comes to the inner surface 127a side when the bending member 127 has a curved shape.
Here, when the reinforcing member 132 is pushed into the pipe 134, the bending member 127 is inserted into the guide hole 128 of the electrode portion 122 as shown in FIG. Since the bending member 127 is formed of an elastic material having rigidity higher than that of the electrode support 9, the portion of the bending member 127 protruding from the distal end side of the pipe 134 returns to the curved shape, and the electrode support 9 is changed to the curved shape. .

電極部122のガイド孔128に湾曲部材127を挿入し終えると、術者は、パイプ134に対して操作棒138を押し込んで把持部131による電極支持体9の把持を解除し、電極部122から処置具123を取り外す。
以上説明したように、本実施形態の電極システム121によれば、電極部122を神経組織Nに確実かつ容易に取り付けることができる。
When the insertion of the bending member 127 into the guide hole 128 of the electrode part 122 is completed, the operator pushes the operating rod 138 into the pipe 134 to release the gripping of the electrode support 9 by the gripping part 131, and from the electrode part 122. The treatment tool 123 is removed.
As described above, according to the electrode system 121 of the present embodiment, the electrode part 122 can be reliably and easily attached to the nerve tissue N.

以上、本発明の第1実施形態から第7実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の構成の変更等も含まれる。
たとえば、上記第1実施形態から第7実施形態では、湾曲形状と平坦形状との間で形状を切り替え可能な部分が電極部の全体であったが、電極部の一部であってもよい。
また、上記第1実施形態から第7実施形態では、電極部の形状が湾曲形状と平坦形状に変形できるのは電極の弾性力によるものとしたが、電極支持体の弾性力によるものとしてもよい。さらに、電極部に新たに形状記憶合金等のような超弾性体を備え、電極部が変形する弾性力がこの超弾性体により生じるように構成してもよい。しかし、一般的に、電極支持体は自然状態で平坦形状である方が製造しやすいので、電極部の形状を変形させる弾性力は、電極または超弾性体により生じさせることが好ましい。
The first to seventh embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes are also included.
For example, in the first to seventh embodiments, the portion where the shape can be switched between the curved shape and the flat shape is the entire electrode portion, but may be a part of the electrode portion.
In the first to seventh embodiments, the electrode portion can be deformed into a curved shape and a flat shape by the elastic force of the electrode, but may be by the elastic force of the electrode support. . Further, a super elastic body such as a shape memory alloy may be newly provided in the electrode portion, and an elastic force that deforms the electrode portion may be generated by the super elastic body. However, in general, the electrode support is more easily manufactured in a natural state and flat, so that the elastic force for deforming the shape of the electrode portion is preferably generated by the electrode or the superelastic body.

また、上記第1実施形態から第7実施形態では、電極側係合部であるガイド孔は貫通孔であるとした。しかし、電極側係合部の形状はこれに限ることなく、伸展部材に係合する形状であればよい。たとえば、電極側係合部は、自身が延びる方向に切り欠きが形成された溝部等のような形状であってもよい。
そして、上記第1実施形態から第7実施形態では、線状組織として神経組織を例にとって説明したが、線状組織はこれに限ることなく、血管、消化管、または筋肉等でもよい。
In the first to seventh embodiments, the guide hole which is the electrode side engaging portion is a through hole. However, the shape of the electrode-side engaging portion is not limited to this, and any shape that engages with the extension member may be used. For example, the electrode side engaging portion may have a shape such as a groove portion in which a notch is formed in a direction in which the electrode side engaging portion extends.
In the first to seventh embodiments, the nerve tissue is described as an example of the linear tissue. However, the linear tissue is not limited to this, and may be a blood vessel, a digestive tract, or a muscle.

1、41、61、81、101、111、121 電極システム
2、31、42、47、62、82、102、122 電極部
3、28、63、84、103、113、123 処置具
9、32、43、48 電極支持体(絶縁部材)
9a 一方の面
9b 他方の面
10、33、44、91、126 電極
11、18、21、34、45、65、128 ガイド孔(電極側係合部)
12、64、83、104、114 伸展機構
13、27、60 伸展部材
14、66 押え棒(当接部材)
67 部材間隔調整部
94 牽引フック(一端側保持部)
95 爪部(他端側係止部)
96 間隔調整機構
107 パイプ(管状部材)
108 押し出し棒(押し出し部材)
115 第一のヘラ部材(第一の挟持部材)
116 第二のヘラ部材(第二の挟持部材)
117 パイプ(支持部材)
127 湾曲部材
128 ガイド孔(電極側係合部)
130 湾曲機構
131 把持部
132 補強部材
133 押出し部
D1、D2、D3、D4 湾曲方向
D6 電極部伸展方向
D7 湾曲部伸展方向
1, 41, 61, 81, 101, 111, 121 Electrode system 2, 31, 42, 47, 62, 82, 102, 122 Electrode unit 3, 28, 63, 84, 103, 113, 123 Treatment instrument 9, 32 , 43, 48 Electrode support (insulating member)
9a One surface 9b The other surface 10, 33, 44, 91, 126 Electrode 11, 18, 21, 34, 45, 65, 128 Guide hole (electrode side engaging portion)
12, 64, 83, 104, 114 Extension mechanism 13, 27, 60 Extension member 14, 66 Presser bar (contact member)
67 Member spacing adjustment section 94 Towing hook (one end side holding section)
95 Claw (other end side locking part)
96 Spacing adjustment mechanism 107 Pipe (tubular member)
108 Extrusion bar (Extruded member)
115 First spatula member (first clamping member)
116 Second spatula member (second clamping member)
117 Pipe (support member)
127 Bending member 128 Guide hole (electrode side engaging portion)
DESCRIPTION OF SYMBOLS 130 Bending mechanism 131 Gripping part 132 Reinforcement member 133 Extrusion part D1, D2, D3, D4 Bending direction D6 Electrode part extending direction D7 Bending part extending direction

Claims (6)

所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、
前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、
を備え、
前記電極部は、
弾性材料でシート状に形成された絶縁部材と、
前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、
を有し、
前記電極部は、外力が作用していない自然状態で前記湾曲形状となるように形成され、
前記処置具は、前記湾曲形状の前記電極部を前記平坦形状に切り替えて保持するとともに、前記保持を解除可能な伸展機構を有し、
前記絶縁部材は、自身が湾曲する湾曲方向に平行に延びる電極側係合部が形成され、
前記伸展機構は、
前記絶縁部材より剛性が高い材質で所定の方向に延びるように形成され、前記絶縁部材の前記電極側係合部に着脱可能に係合する伸展部材と、
前記絶縁部材から前記伸展部材が取り外される際に前記絶縁部材に当接される当接部材と、
を有することを特徴とする電極システム。
An electrode part capable of switching at least a part from one of a curved shape and a flat shape curved so as to be wound around a predetermined linear structure to the other;
A treatment instrument for switching the shape of at least a part of the electrode portion from one of the curved shape and the flat shape to the other;
With
The electrode part is
An insulating member formed into a sheet of elastic material;
An electrode that is provided on one surface that is an inner surface of the curve when the insulating member has the curved shape, and that can apply a predetermined voltage;
Have
The electrode portion is formed to have the curved shape in a natural state where no external force is applied,
The treatment instrument has an extension mechanism capable of releasing the holding while switching and holding the curved electrode part to the flat shape,
The insulating member is formed with an electrode side engaging portion extending in parallel with a bending direction in which the insulating member is bent,
The extension mechanism is
An extending member that is formed to extend in a predetermined direction with a material having higher rigidity than the insulating member, and is detachably engaged with the electrode side engaging portion of the insulating member;
A contact member that contacts the insulation member when the extension member is removed from the insulation member;
An electrode system comprising:
請求項1に記載の電極システムにおいて、
前記絶縁部材は、前記湾曲形状となったときに筒状に形成され、
前記電極側係合部は、前記絶縁部材が前記湾曲形状となったときの筒状の前記絶縁部材の中心軸線方向の両端部側にそれぞれ形成され、
前記伸展機構は、
2つの前記伸展部材と、
前記2つの伸展部材が、それぞれが延びる前記所定の方向に交差する方向に並ぶように支持するとともに、前記2つの伸展部材の前記交差する方向の間隔を調整可能な部材間隔調整部と、
をさらに有することを特徴とする電極システム。
The electrode system according to claim 1, wherein
The insulating member is formed in a cylindrical shape when the curved shape is obtained,
The electrode side engaging portions are respectively formed on both end sides in the central axis direction of the tubular insulating member when the insulating member has the curved shape,
The extension mechanism is
Two of the extension members;
The two extending members are supported so as to be aligned in a direction intersecting the predetermined direction in which each of the extending members extends, and a member interval adjusting unit capable of adjusting an interval between the two extending members in the intersecting direction;
An electrode system further comprising:
所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、
前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、
を備え、
前記電極部は、
弾性材料でシート状に形成された絶縁部材と、
前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、
を有し、
前記電極部は、外力が作用していない自然状態で前記湾曲形状となるように形成され、
前記処置具は、前記湾曲形状の前記電極部を前記平坦形状に切り替えて保持するとともに、前記保持を解除可能な伸展機構を有し、
前記伸展機構は、
前記絶縁部材における前記一方の面側、および前記一方の面とは反対側の他方の面側から前記電極部を挟持して前記電極部を前記平坦形状に保持するとともに、前記挟持を解除可能なことを特徴とする電極システム。
An electrode part capable of switching at least a part from one of a curved shape and a flat shape curved so as to be wound around a predetermined linear structure to the other;
A treatment instrument for switching the shape of at least a part of the electrode portion from one of the curved shape and the flat shape to the other;
With
The electrode part is
An insulating member formed into a sheet of elastic material;
An electrode that is provided on one surface that is an inner surface of the curve when the insulating member has the curved shape, and that can apply a predetermined voltage;
Have
The electrode portion is formed to have the curved shape in a natural state where no external force is applied,
The treatment instrument has an extension mechanism capable of releasing the holding while switching and holding the curved electrode part to the flat shape,
The extension mechanism is
The electrode part is clamped from the one surface side of the insulating member and the other surface side opposite to the one surface to hold the electrode part in the flat shape, and the clamping can be released. An electrode system characterized by that.
請求項3に記載の電極システムにおいて、
前記伸展機構は、
前記湾曲形状に形成された前記電極部の湾曲を伸ばして所定の電極部伸展方向に伸展させたものを、前記電極部伸展方向と自身の軸線方向とが平行になるように内部に収容する管状部材と、
前記管状部材内の前記電極部を前記管状部材の前記軸線方向の先端側に押し出す押し出し部材と、
を有することを特徴とする電極システム。
The electrode system according to claim 3.
The extension mechanism is
Tubular in which the electrode portion formed in the curved shape is stretched and expanded in a predetermined electrode portion extension direction so that the electrode portion extension direction and its own axial direction are parallel to each other. A member,
An extruding member for extruding the electrode portion in the tubular member to the distal end side in the axial direction of the tubular member;
An electrode system comprising:
請求項3に記載の電極システムにおいて、
前記伸展機構は、
前記湾曲形状に形成された前記電極部の湾曲を伸ばして所定の電極部伸展方向に伸展させたものにおいて、
前記絶縁部材の前記一方の面側に配置されるとともに前記電極部伸展方向の一方側に移動可能な第一の挟持部材と、
前記絶縁部材の前記他方の面側に配置される第二の挟持部材と、
前記絶縁部材の前記電極部伸展方向の一方側に当接する支持部材と、
を有することを特徴とする電極システム。
The electrode system according to claim 3.
The extension mechanism is
In what extended the curvature of the electrode part formed in the curved shape and extended in a predetermined electrode part extending direction,
A first clamping member disposed on the one surface side of the insulating member and movable to one side of the electrode portion extending direction;
A second clamping member disposed on the other surface side of the insulating member;
A support member in contact with one side of the electrode member extending direction of the insulating member;
An electrode system comprising:
所定の線状組織に巻きつくように湾曲した湾曲形状および平坦な平坦形状のいずれか一方から他方に少なくとも一部が形状を切り替え可能な電極部と、
前記電極部の前記少なくとも一部の形状を前記湾曲形状および前記平坦形状のいずれか一方から他方に切り替える処置具と、
を備え、
前記電極部は、
弾性材料でシート状に形成された絶縁部材と、
前記絶縁部材が前記湾曲形状であるときに湾曲の内側の面となる一方の面に設けられ所定の電圧を印加可能な電極と、
を有し、
前記電極部は、外力が作用していない自然状態で前記平坦形状となるように形成され、
前記処置具は、前記平坦形状の前記電極部を前記湾曲形状に切り替え可能な湾曲機構を有し、
前記絶縁部材は、前記一方の面に平行に延びる電極側係合部が形成され、
前記電極部は、前記絶縁部材より剛性が高い弾性材料で所定の線状組織に巻きつくように湾曲した形状に形成され、前記電極側係合部に係合可能とされた湾曲部材を有し、
前記湾曲機構は、
前記絶縁部材を把持する把持部と、
一定の剛性を有して所定の方向に延びるように形成され、前記絶縁部材の前記電極側係合部に着脱可能に係合する補強部材と、
前記湾曲部材を前記湾曲部材の湾曲を伸ばす湾曲部伸展方向に伸展した状態で保持するとともに、前記湾曲部伸展方向に伸展した前記湾曲部材を前記湾曲部伸展方向に押し出す押出し部と、
を有することを特徴とする電極システム。
An electrode part capable of switching at least a part from one of a curved shape and a flat shape curved so as to be wound around a predetermined linear structure to the other;
A treatment instrument for switching the shape of at least a part of the electrode portion from one of the curved shape and the flat shape to the other;
With
The electrode part is
An insulating member formed into a sheet of elastic material;
An electrode that is provided on one surface that is an inner surface of the curve when the insulating member has the curved shape, and that can apply a predetermined voltage;
Have
The electrode part is formed to have the flat shape in a natural state where no external force is applied,
The treatment instrument has a bending mechanism capable of switching the flat electrode portion to the curved shape,
The insulating member is formed with an electrode side engaging portion extending in parallel with the one surface,
The electrode part has a curved member that is formed in a curved shape so as to be wound around a predetermined linear tissue with an elastic material having higher rigidity than the insulating member, and can be engaged with the electrode side engaging part. ,
The bending mechanism is
A gripping part for gripping the insulating member;
A reinforcing member formed to extend in a predetermined direction with a certain rigidity, and detachably engaged with the electrode side engaging portion of the insulating member;
Holding the bending member in a state where the bending member extends in the bending portion extension direction that extends the bending of the bending member, and an extruding portion that pushes the bending member extended in the bending portion extension direction in the bending portion extension direction;
An electrode system comprising:
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