201206513 六、發明說明： 【發明所屬之技術領域】 本發明係關於導管。更具體 操作配置於體外之近端側的操作部：而可！關於藉由 所插入之位於遠端鄰近處的導管進==使體腔内 【先前技術】 ^化者。 經由血管插人至心咖部的電極導 體内的導管的遠端(前端)方向，係藉 ：，插入於 導管近端(基端或近手端)所裝配的操作部使^體外之 了使導管之遠端進行偏向的機構而言，例如於2以為 1’揭示了具備板狀彈黃以及挾持板狀彈簧而配兩文獻 -對操作用線’藉由拉伸此操作用線以使遠端於2個= 進行偏向之構成。當❹板狀彈簧以使遠端偏向時，射 使導管的彎曲部之平面性提高。 [先前技術文獻] [專利文獻] [專利文獻1]日本特開2006-061350號公報 【發明内容】 (發明欲解決之課題） 近年來，以導管多機能化或高性能化之目的而言，有 著増加設於導管前端之電極數、於導管前端設置各種感測 器（Sensor)、使所期望之液體從導管前端流出等需求。此 時，插通於導管的管内的導線或導管等（以下，適宜地將其 等稱為導線類）的數量有必要增加。然而，上述之以往的導 4 322944 201206513 管，插通於管内的板狀彈簧係成為增加插通的導線 妨礙。 于义 本發明係有鑑於如此課題而研創者，其目的係 遠端可偏向導管中，良好地保持彎曲部平面性的同/、 加導管之管内可插通的導線類數量的技術。 场 (解決課題之手段） 本發明之紐料管。該導f係具備:f狀構件. :奉狀彈簧，沿著管狀構件的中心軸而設置於管狀構件内 :朝I:一者相對於中心軸偏移配置，另-者相對於中心 •f，為相反之方向偏移配置；操作料插通用其 者官狀構件的中心轴而設置於管狀構件 Β =一對棒狀彈菁的中心轴之假想平面之-面二 一面側的至少一者. 側及另 用線插通用管道，其中:作用線’可滑動地插通於操作 鄰近處。 其中-者之端部連接於管狀構件之遠端 管的=平遠端可偏向導管中’良好地保持導 線類數量。 ’增加導管之管内可插通的導 上述態樣的邋技士 狀構件内部，用以：備有：複數個管部，設置於管 管道1魏鱗=包含操作料插朝管道之複數個 圓周方向，並幻日Γ —部分係以排列於管狀構件之 複數個管部之至,丨、敎f部彼此外切之方式配置。此外， 及另一面侧之方^—者’亦可以橫跨於假想平面的一面侧 322944 5 201206513 此外，上述態樣之導管中，係可為操作用線插通用管 部與假想平面有所間隔之方式而配置。另外，排列於圓周 方向的管部亦可為以與以管狀構件之中心軸為中心的假想 略圓内切之方式而配置。 此外，一對棒狀彈簧係可配置在排列於圓周方向的管 部之中相鄰接的2個管部與假想略圓所圍之區域。另外， 一對棒狀彈簧之垂直於管狀構件的中心軸的剖面形狀係略 圓形，可為以與於2個管部外切，並且與假想略圓内切之 方式而配置。另外，一對棒狀彈簣之延伸於其軸方向之外 周面的至少一部分亦可埋入於管狀構件。 此外，上述態樣之導管中，複數個管部係包含第1至 第5管部與第1及第2操作用線插通用管部，可為第1管 部係以包含管狀構件的中心軸之方式而配置；第2及第3 管部與配置於其間之第1操作用線插通用管部係配置於假 想平面之一面侧；第4及第5管部與配置於其間之第2操 作用線插通用管部係配置於假想平面之另一面侧；第2至 第5管部與第1及第2操作用線插通用管部係設為包圍第 1管部之方式。此外，於遠端區域係具備複數個電極，在 複數個管道之中除了操作用線插通用管道以外之至少一部 分的管道可為複數個電極用導線所插通。 又，將上述要件適宜組合者，亦包含於本案專利所尋 求之發明的保護範圍。 (發明之效果） 以本發明，可在遠端可偏向導管中，良好地保持導管 6 322944 201206513 的彎曲部之平面性的同時，增加導管之管内可插通的導線 類數量。 【實施方式】 以下，係參照圖式對本發明之實施型態進行說明。 又，於全部圖式中，對相同構成要件附註相同符號，而於 以下說明適宜省略詳細之說明。 [實施型態1] 實施型態1之導管係可前端偏向操作之電極導管，可 用於例如心臟之心律不整的診斷或治療用。第1圖係實施 型態1之導管的概略側面圖，第2圖係實施型態1之導管 的概略平面圖，第3圖係第1圖之A-A線上的概略剖面圖。 又，第3圖係省略了操作用線50a、50b之圖式。 如第1圖及第2圖所示，實施型態1之導管2係具備: 管狀構件4、握取部6、前端尖頭電極(Tip electrode)10， 以及複數個環狀電極12a至12k(以下將環狀電極12a至 12k適宜總稱為「環狀電極12」）。 導管2係具有位於管狀構件4之遠端部的前端尖頭電 極10及環狀電極12。前端尖頭電極10係藉由例如接著劑 或熔融接合而固定於管狀構件4。此外，環狀電極12a至 12k係例如以口徑較管狀構件4的外徑為大之金屬製環套 合而固定於管狀構件4外周面。環狀電極12之數量並無特 殊限定，可因應可插通於管狀構件4之導線數量等而進行 適宜設定。 管狀構件4之近端係裝著有握取部6。此外，為了以 7 322944 201206513 握取部6進行管狀構件4之前端部的偏向操作（擺動操作） 而裝著有旋鈕7。以握取部6與旋鈕7構成操作部。 管狀構件4如第3圖所不’係由具有單腔（Single_lumen) 構造之外筒4a與設於外筒4a之腔内、具有容納空間2〇 之中空狀内筒4b所構成。内筒4b係存在於由外筒4a之遠 知所延伸之特定區域。此外，外筒4a之内周面係與内茼 4b之外周面彼此密合而固定。外筒4a與内筒仆之固定係 可使用接著、熔著等方法。如後所述，容納空間2〇係設有 棒狀彈簧與複數個管道（第3圖僅有管道31、32、％(第^ =作用線插通用管41、第2操作用線插通用管42、第ι 二,之圖式）。管狀構件4係以遠端鄰近處的柔軟性相對 =、近端鄰近處的柔軟性相對為低之構成為佳。例如， 管狀構件4係具有將配置於遠端側之蕭氏D硬度2〇至幻 的構件I，配置而鄰接於構件Π之近端、蕭氏D硬度45 至72之柔軟性較構件！低的構㈣，及配 =之近端、蕭氏D硬度55至⑽之柔軟性較構件„低= =予以接合之構造。又，管狀構件4係可為外筒如與 内筒4b為一體之構造。此外，外筒如及/或内筒仆係可 為多層構造。 管狀構件4之主要部分，係由例如：聚烯烴、聚醯胺、 聚醚聚醯胺、聚胺酯等合成樹脂所構成。管狀構件4之外 杈，一般而言約0.6至3mm，長度為約5〇〇至l2〇〇mm。 本實施型態之管狀構件4的外徑約2〇mm、長度為約 322944 8 201206513 前:尖頭電極10及環狀電極i2係以例如铭、銅、不 ^鋼、金、料導電性良好的金屬 产狀電桎1^疋，、°金所構成者為佳。前端尖頭電極10及 卜徑雖無特別限定’惟以與管狀構件4之外 度者為佳’通常係約〇 5至3随。 第5圖係i H 2圖之Μ線上的剖面處的概略斜視圖， 圖传t 1F1 °之C_C線上的剖面處的概略斜視®1，第6 =第1圖之E-E線上的概略剖面圖。又，第5圖相當於 第4圖所示之導管被切斷於假想平面Η的狀態之概略圖。 狀橋及第5圖所示，本實施型態之導管2係於管 + IP具備—對之棒狀彈簧22a、22b與複數個管道 31、32、33、34、35、36、37。 一對之棒狀彈簧22a、22b係沿著管狀構件4的中心轴 XI而設置於管狀構件4的内部之具有彈性的棒狀體。於本 貫施型態，係於容納空間2G容納—對之棒狀彈簧22a、22b (參照第3圖）。一對之棒狀彈D2a、22b之中，一者之棒 狀彈菁瓜係相對於管狀構件4的中心轴χι為偏移而配 置、另-者之棒狀彈簧22b係、相對於管狀構件4的中心轴 XI之相反方向為偏移而配置。於本實施型態，棒狀彈簧 22a係配置於外筒4a的鄰近，棒狀彈簧22b係設於以中心 轴XI為對稱軸之與棒狀彈簧瓜對稱的位置。以構成棒 狀彈簧22a、22b的材料而言’係可列舉如nyl〇n(註冊商 標）6等聚醯胺、聚謎_(PEEK)、聚醯亞胺等樹脂，或者 322944 9 201206513 疋不鏽鋼（sus)、鎳鈦(Niekel titanium) 1鈦等金屬。 …像讀，藉由設置一對棒狀彈酱mb，而互 官=構件4之中心轴X1為偏移之方式配置，係可使後迷 於吕道3卜32所插通之操作用線5〇a、5〇b的拉伸操作時， 不使通過棒狀彈簧22a的中心轴χ2與棒狀彈菁咖的 心轴X 3之假想平面扭轉而使導管2的彎曲部彎曲。 排列於管狀構件4的中心軸幻垂直的方向之假想平面好 上的各點’可由各別之彎曲前的位置於相同方向僅等 移的方式使導管2彎曲。因此可良好地保持導管2的 部之平面性。此外，—對棒狀彈簧22a、咖於容納 =内所佔的讀係較板狀彈簧小。因此，變得可設計為於 管狀構件4插通較多之導線類。例如可為了插通導線類，、 而形成如與棒狀彈t22a和棒狀科咖之間的區域 般的管道。再者’—對棒狀彈簧22a、22b由於無法如 彈簧般將容納空間分縣2個空間，可根據管道的配置而 自由地設計。 而 一對棒狀彈簧22a、22b，其遠端係延伸至管狀構件4 之遠端鄰近處’近端係延伸至距離管狀構件4之遠端的特 定距離嗜狀彈簧22a、⑽係具有例如·匪以下之長 度。此外，-對棒狀彈簧22a、22b，其轴方向延伸之外周 面的至少—部分係埋人於管狀構件4。本實施型態之 ^狀彈簧22a、22b的軸方向延伸之外周面，長度達棒狀彈 簧22a、22b全長之圓周方向約2/3的區域係埋入於管狀構 件4的内筒4b。藉此’長達全長之各棒狀彈簧22a、22b 322944 10 201206513 係栓固於管狀構件4的狀態，而可限制後述之操作操作用 線50a、50b時可能產生之各棒狀彈簧22a、22b相對於管 狀構件4的扭曲。此結果係導管2之扭轉勁度(T〇rsi〇nal stiffness)提高，可更為提高導管2的彎曲部之平面性。此 外’藉此係可減低導管2產生曲線形狀不良的可能性，或 疋因棒狀彈簧22a、22b扭曲而使管狀構件4破損的可能 性。於此’前述「埋入」係意指例如棒狀彈簧22a、22b 的外周面中，於圓周方向區域的約1/4以上係與内筒4b的 内壁相接。又’ 一對棒狀彈簧22a、22b之存在範圍，係可 因應導官2之彎曲區域的長度等而進行適宜設定。本實施 型，之導官2，棒狀彈簧22a、22b之存在範圍係與導管2 之f曲區域的存在範圍大略一致，棒狀彈簧22a、22b之遠 端位置係，前端尖頭電極1G之近端位置大略一致。 “複ί B道31至37係沿著管狀構件4的中心軸XI而 a又置於官狀構件4的内邻 的内。卩。本實施型態係於容納空間20(參 侧時’導管2之彎曲部係可ϋ ==谷納複數個管道31至37。.複數管道…中 係配置^=!!^用^桑作用線插通用管道。管道 Χ2、Χ3之假想平面22a、22b各自的中心轴 想平面Η的另一面側H2 ^則H1，管道32係配置於假 彎曲部進行2方向的偏/4此，可如後述之將導管2的 置於假想平面Η的’操作祕插通用管道係配 即可，而當僅配置於其中1及另—面侧Η2之至少一者 行1方向的偏向。 322944 11 201206513 管道33至37中的管道33，係可配置為於管道31與 管道32之間而包含管狀構件4之中心軸XI。此外，管道 34至37係可配置為與管道31及管道32 —同包圍管道33。 管道33至37係延伸自握取部6，為了於前端尖頭電極10 及環狀電極12進行電氣性連接而使用作為插通複數導線 的管道。 複數管道31至37,係分別藉由複數管（複數管部）所形 成。複數個管係包含：第1操作用線插通用管41(第1操作 用線插通用管部）、第2操作用線插通用管42(第2操作用 線插通用管部）、第1管43(第1管部）、第2管44(第2管 部）、第3管45(第3管部）、第4管46(第4管部）及第5管 47(第5管部）。亦即，於本實施型態，係於容納空間20内 容納具有中空構造的複數個管，複數個管之中空部分分別 為管道31至37。本實施型態之各管的内徑，亦即管道31 至37的口徑係例如約0.46mm。 複數個管中之第1管43係配置為跨於假想平面Η的 一面側Η1及另一面側Η2。此外，第1操作用線插通用管 41、第2操作用線插通用管42、第2管44、第3管45、 第4管46及第5管47係配置為排列於管狀構件4之圓周 方向的同時，相鄰的管部彼此係外切者。 本實施型態中，第1管43係配置為包含管狀構件4 之中心轴XI。此外，第2管44及第3管45之間係配置有 第1操作用線插通用管41，而此等係配置於假想平面Η的 一面側Η1。第2管44與第1操作用線插通用管41係互為 12 322944 201206513 • l^V^45^ 此外，第4管46及第5管47之間係 ：卜切。 ，插通用管42,而此等係配置於假想平面Η的另線 =與第2操作用線插通用管”互為： :至第?二?作用線插通用管42係互為外切。而且第 Β至47、第1才呆作用線插通用管41、及第2 用管42係圍以第1管43。第2管44與第5 4之圓^方減何之至少—部分係排顺管狀構件 ^圓^方向而使相鄰之管彼此外切，f狀構件4係可對 應來自夕方向的外力，成為安定之構造。例如，如上述之 環狀電極！2係以口徑較管狀構件4的外徑大之金屬環套人 固定於管狀構件4。因此，以往設置環狀電極12時有導致 管狀構件4變形的可能性。對此，藉由配置各管如上述而 ^管狀構件4成為安定之構造’係可防止套合時因施力於 ^狀構件4而導致管狀構件4變形。又且，本實施型態之 第^至第5 g 44至47、第1操作用線插通用管41、及第 2操作用線插制管42，係分別與第丨㈣㈣。藉此， 管狀構件4係可對應外力，成為更加安定之構造，而可更 確實地防止管狀構件4的變形。 此外因第1管43係配置為與假想平面H相交，故 與具有板狀彈簧的構造相比，可以增加可插通於管狀構件 4 ^導線類的數量。❹卜，« 1操作用線插通用f 4!及第 2操作用線插制管4 2係配置為與假想平面H有所間隔。 13 322944 201206513 藉此，與第丨操作用線插通用管41及第2操作用線插通用 管42接近於假想平面H之狀況相比，係可以較小之力 棒狀彈簧22a、22b彎曲。因此，提升導管2的操作性。 第2至第5管44至47、f 1操作用線插通用管仏 及第2操作用線插通用管42係密合固定於内筒钋之内 面。此等管與内筒4b之固定係可使用接著、熔著等方法°。 於第1操作用線插通用管41係插通有可滑動之操 用線50a’於第2操作用線插通用管42係插通有可滑動 操作用線50b。如第6圖所示，於操作用線5〇&之遠 形成有口徑較位於第！操作用線插通用管41_操作^ 5〇a大之部分球狀的電樞(Anch〇r)52a。於操作用線寫之 遠端亦同樣地形成有口徑較位於第2操作用線插通用管4 2 内的操作用線50b大之部分球狀的電樞52b。於前端尖頭 電極10之内側係形成有凹部11，此凹部11為焊料62所 填充。電# 52a、52b係埋入於焊料62。藉此，操作用線 5/a、50b為焊料62及前端尖頭電極1〇所固定，而連接於 管狀構件4之遠端的鄰近處。 、 此外，操作用線50a、50b之近端係如第1圖及第2 圖所示連接於旋紐7。藉此，經由操作第1圖及第2圖所 不之旋鈕7拉伸操作用線5〇a、5〇b，係可進行導管2之遠 端擺動偏向。於本實施型態，藉由拉伸操作用線50a係可 使導管2之遠端偏向第2圖的箭號D1之方向，拉伸操作 用線5〇b係可使導管2之遠端偏向第2圖的箭號D2之方 向0 322944 14 201206513 於此’藉由如上述般於操作用線插50a、50b的遠端設 置電拖52a、52b ’可使操作用線5〇a、5〇b難以自焊料62 拔離。藉此’可提升導管2之動作信賴性。又，本實施型 態之操作用線插50a、5〇b係固定於前端尖頭電極1〇，惟 不特別限定於此’操作用線5〇a、5〇b ’其遠端亦可固定於 官狀構件4等。此外’操作用線5〇a、5〇b的遠端，以配置 於棒狀彈簧22a、22b的軸方向之由中間位置朝遠端側之區 域為佳。操作用線50a、50b的遠端，以配置於由棒狀彈簧 22a、22b的遠端朝近端方向3〇mm的位置之遠端侧的區域 為更佳。 於第1至第5管43至47，係於前端尖頭電極1〇及環 狀電極12插通有電氣性連接的導線。例如:於第1管43， 係插通有電氣性連接於前端尖頭電極10的前端尖頭電極 用導線（無圖示）。前端尖頭電極用導線之遠端係埋入於焊 料62。藉此，前端尖頭電極用導線與前端尖頭電極10透 過焊料62進行電氣性連接。又，前端尖頭電極用導線的遠 端亦可藉由熔接而與前端尖頭電極10進行電氣性連接。此 外’於第1管43，係可插通作為感知導管2之遠端鄰近處 溫度的溫度感測器的熱電偶（Thermoelectric couple)或其他 感測器。或者，第1管43亦可作為為了使所期望之液體從 導管2前端流出而使用者。 於第2至第5管44至47 ’係以互為絕緣的狀態而插 通有環狀電極12之分別為電氣性連接的複數環狀電極用 導線（無圖示）。各環狀電極用導線的遠端係經由設於第2 15 322944 201206513 至第5管44至47及管狀構件4之細孔而電氣性連接於各 環狀電極12。各環狀電極用導線的遠端，係藉由焊料'(無 圖示）或是熔接而固定於環狀電極12。又，第2至第5 ^ 44至47亦可插通溫度感測器等各種感測器、或將第 第5管44至47作為上述之導管使用。於本實施型態，因 前端尖頭電極用導線及環狀電極用導線係插通有第〗至第 5管43 S 47 ’故可防止在導管2、彎曲的同時導線互 結。藉此’係可避免於導管2(管狀構件4)的表面，以 糾結為起因而導致凹凸等事態發生。 在此，參照第7圖對本實施型態之導管2的各管之 :進行詳細說明。第7圖係為了 :第所示’排列於管狀構件4之圓周方向4 作LL 7、第1操作用線插通用管41、及第2 =線:通用管42’係配置為内切於 ^ 軸XI為中心的假想略圓s。 係可容易地保持為略圓形 狀二:構件4的剖面形 圓形時，變得可容易地將導構件4的剖面形狀為 因此，藉由本實施型離 插人護套(sheath)或众管 地操作性。此外 "導S 2 ’係可確保導管2之良 -般係取決於管狀内之導管大小(粗度) 此，以該最大徑部八沾 最大徑部分的大小（口徑）。 略圓形狀者係可較二t小相同之狀況進行比較，剖面 更高之導管2的*為扁平形狀或剖面為多角形狀者 狀構件4之導線率。亦即’可以增加可插通於 的數量，而可縣導管2之多機能化 322944 16 201206513 高性能化。 此外，葬+ 升管狀構件：：S狀構件4之剖面形狀為略圓形，係可提 更為安定的構1強度平衡’成為對應來自多方向的外力之 circle)與具右又’前述「略圓」係意指包含真圓（W 此外、°得到上述效果之真圓度的圓。 件4之圓鬥方+棒狀彈簧22a、22b係配置於排列於管狀構 圍的區域：具：的管中之相鄰的兩個管與假想略圓8所包 第4管46 _體相而言，棒狀彈晉❿係配置於第3管45、 簧瓜係配/j；略^ S所包圍的區域R1。此外，棒狀彈 圍的區域以。如管44、第5管47與假想略圓S所包 藉由於相鄰之兩個管間的靜空間（Dead 用率。 欠彈簧22a、Ub，係可提高導管2的空間利 件：中，棒狀彈簧瓜】垂直於管狀構 22a係配置為外略圓形。而且’棒狀彈菁 假想略圓s，棒二J:5及第4管46的同時内切於 箏狀彈頁22b係配置為外切於第2管44及m 5管47的同時内切於假想略心。藉此，棒心=第 22b係成為分別為㈡ 捧轉簧22a、 22a、22b之對於14之狀態，故可限制棒狀彈黃 營2的城一^ 之扭轉方向的動作。為此’導 ==度係可為更高，而 成為更加安定之構造。 …如 ' 上4月’本實施型態之導管2係具備一對之棒狀 彈簧22a、22b，一者之棒狀彈簧％係配置於相對於管狀 17 322944 201206513 構件4之中心轴幻為偏 係相對於中心軸X1之鱼 另者之棒狀彈簧22b 置。藉此，係可保持導:彈簧22&相反方向為偏移配 且，與設置板狀曲部之良一 構件4内之導線類的數量。目比係可増加可插通於管狀 屬技=實施型態，亦可基於本發明所 計變更，如此之組合知識純變形㈣行各種設 明之範圍。將上述之==施型態亦包含於本發 產生之新賴實施型態，係；進行組合所 形例分別之效果。 彳有者所，、且合之實施型態與變 外周==中:棒狀彈簧—之長達全長的 =周面之圓財向之-部分係埋人於管狀構件4 =Γ:广一部分亦可為轴方向之-部分而埋入於; 狀構件4。亦即’棒狀彈簧2 :勁度提升效果的範圍内，方向延伸= 向及圓周方向的至少—部分係埋人於管狀構件4者即^ =實施型態之導管2,於内筒仆所形成之容納空 曰y〇為1個腔時’⑽4b係具有單腔構造乃為於 仆的腔内可容納内筒4b以外個體之管4ι至a之構造。 ^而，導管2之構造係無特別限定，管41至47亦可與管 ^構件4為-體者。亦即，内筒4b亦可具有構成管道Η =37之複數腔與為了贿—對棒狀㈣㈣通孔所形成 之夕腔(Multi-lumen)樣式構造。此時，由構成管道m至 322944 18 201206513 37之各L的内壁之特定厚度部分形成管部。χ，當内筒扑 有夕豇樣式構造時，棒狀彈簧22a、22b之外周面整體係 成為埋入於f狀構件4之構造，可進-步提高導管2之扭 轉勁度提升效果。 上述實施型態，一對棒狀彈簧22a、22b係為棒狀狀 態，惟棒狀彈簧22a、22b亦可係具有中空構造的筒狀體。 藉此’可將導管2輕量化、提升導管2的操作性。此外， 亦可因應棒狀彈簧22a、22b之中空部分的口徑，於該中* 部分插通導線類。 工 (產業上之可利用性） 本發明係可利用於導管。 【圖式簡單說明】 第1圖為實施型態1之導管的概略側面圖。 第2圖為實施㈣1之導管的概略平面圖。 =3圖為第1圖之Α·Α線上的概略剖面圖。 第2圖之Β-Β線上的剖面處的概略斜視圖 第Υ圖為說明管之配置的概略剖面圖。 【主要元件符號說明】 2 導管 4 4a 外筒 4b 6 握取部 7 10 則端尖碩電極 11 :第4圖之線上的剖面處的概略斜視圖 弟圖為第丨圖之Ε·Ε線上的概略剖面圖。 管狀構件 内筒 旋知 凹部 322944 19 201206513 12a至12k 環狀電極 20 容納空間 22a、22b棒狀彈簧 31、32、33、34、35、36、37 管道 41 第1操作用線插通用管 43 第1管 45 第3管 47 第5管 52a 電樞 A-A 剖面處為第 3圖 C-C 剖面處為第 5圖 E-E 剖面處為第6圖 HI 假想平面Η的一面侧 H2 假想平面Η的另一面側 R1 第3管45、 第4管46 R2 第2管44、 第5管47 S 假想略圓 XI、 Χ2、Χ3中心軸 42 第2操作用線插通用管 44 第2管 46 第4管 50a、50b操作用線 62 焊料 B-B 剖面處為第4圖 D1、D2遠端偏向之方向 Η 假想平面 與假想略圓S所包圍的區域 與假想略圓S所包圍的區域 20 322944201206513 VI. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a catheter. More specific operation of the operating part configured on the proximal side of the body: but! Regarding the insertion of the catheter located adjacent to the distal end into the body cavity = [Previous technique] Inserting a blood vessel into the distal end (front end) of the catheter in the electrode conductor of the heart-and-coffee portion, by inserting the operation portion fitted at the proximal end (base end or near-hand end) of the catheter to make the external body For the mechanism in which the distal end of the catheter is deflected, for example, 2's 1' reveals that there is a plate-like spring and a plate-like spring, and two documents are provided - for the operation line', by stretching the operation line to make the distance At the end of 2 = the composition of the bias. When the slab spring is biased to deflect the distal end, the planarity of the curved portion of the catheter is increased. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-2006-061350 SUMMARY OF INVENTION [Problems to be Solved by the Invention] In recent years, for the purpose of multi-functionalization of a catheter or high performance, There is a need for the number of electrodes to be applied to the front end of the catheter, the provision of various sensors at the tip of the catheter, and the flow of the desired liquid from the front end of the catheter. At this time, it is necessary to increase the number of wires, conduits, and the like (hereinafter, suitably referred to as wires) inserted into the tubes of the catheter. However, in the above-mentioned conventional guide 4 322 944 201206513, the plate spring inserted into the tube becomes a hindrance to the increase of the inserted wire. YU YI The present invention has been developed in view of such a problem, and the object thereof is a technique in which the distal end can be biased into the catheter to well maintain the flatness of the curved portion and the number of wires that can be inserted into the tube of the catheter. Field (means for solving the problem) The material tube of the present invention. The guide f is provided with: a f-shaped member. A feather-shaped spring is disposed in the tubular member along a central axis of the tubular member: toward I: one is offset from the central axis, and the other is relative to the center. The arrangement is offset in the opposite direction; the operation material is inserted into the central axis of the official member and is disposed on the tubular member Β = at least one of the imaginary plane of the central axis of the pair of rod-shaped elastic crystals Side and other lines are plugged into the universal pipe, where the line of action 'slidably inserts into the vicinity of the operation. Wherein the end of the end is connected to the distal end of the tubular member = the flat distal end can be biased into the catheter' well maintaining the number of wires. 'Increase the inside of the tube of the catheter into the inside of the 邋 邋 状 , , , , , 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 = And the imaginary Γ - part is arranged in a plurality of tube portions of the tubular member, and the 丨 and 敎 f portions are arranged to be circumscribed outside each other. In addition, the side of the other side can also straddle the side of the imaginary plane 322944 5 201206513 In addition, in the above-mentioned catheter, the universal tube portion for the operation can be spaced from the imaginary plane. Configured in a way. Further, the tube portion arranged in the circumferential direction may be disposed so as to be inscribed in an imaginary circle centered on the central axis of the tubular member. Further, a pair of rod-shaped springs can be disposed in a region surrounded by two adjacent pipe portions and a sinuous circle in the pipe portion arranged in the circumferential direction. Further, the cross-sectional shape of the pair of rod-shaped springs perpendicular to the central axis of the tubular member is slightly rounded, and may be arranged to be circumscribed to the two tube portions and to be inscribed in a virtual circular shape. Further, at least a part of the outer peripheral surface of the pair of rod-shaped magazines extending in the axial direction may be embedded in the tubular member. Further, in the catheter of the above aspect, the plurality of tube portions include the first to fifth tube portions and the first and second operation wire insertion universal tube portions, and the first tube portion may be a central axis including the tubular member. The second and third tube portions are disposed on one side of the virtual plane with the first operation wire insertion common pipe portion disposed therebetween, and the fourth and fifth pipe portions and the second operation disposed therebetween The universal tube portion is placed on the other surface side of the virtual plane, and the second to fifth tube portions and the first and second operation wire insertion common tube portions are configured to surround the first tube portion. Further, in the distal end region, a plurality of electrodes are provided, and at least a part of the plurality of pipes other than the operation wire insertion general-purpose pipe may be inserted through a plurality of electrode wires. Moreover, the appropriate combination of the above requirements is also included in the scope of protection of the invention sought by the patent of the present invention. (Effect of the Invention) According to the present invention, the number of the lead wires that can be inserted in the tube of the catheter can be increased while the distal end can be biased into the catheter to well maintain the planarity of the curved portion of the catheter 6 322944 201206513. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and the detailed description thereof will be omitted as appropriate. [Embodiment 1] The catheter of the embodiment 1 can be used for the diagnosis or treatment of arrhythmia of the heart, for example, which can be biased toward the front end. Fig. 1 is a schematic side view showing a catheter of the first embodiment, Fig. 2 is a schematic plan view of a catheter of the first embodiment, and Fig. 3 is a schematic cross-sectional view taken along line A-A of Fig. 1. Further, in the third drawing, the drawings of the operation wires 50a and 50b are omitted. As shown in Fig. 1 and Fig. 2, the catheter 2 of the first embodiment includes a tubular member 4, a grip portion 6, a tip electrode 10, and a plurality of ring electrodes 12a to 12k ( Hereinafter, the ring electrodes 12a to 12k are collectively referred to as "ring electrode 12" as appropriate. The catheter 2 has a distal tip electrode 10 and an annular electrode 12 at the distal end of the tubular member 4. The tip end tip electrode 10 is fixed to the tubular member 4 by, for example, an adhesive or fusion bonding. Further, the ring-shaped electrodes 12a to 12k are fixed to the outer peripheral surface of the tubular member 4, for example, by a metal ring having a larger diameter than the outer diameter of the tubular member 4. The number of the ring-shaped electrodes 12 is not particularly limited, and can be appropriately set in accordance with the number of wires that can be inserted into the tubular member 4, and the like. The proximal end of the tubular member 4 is fitted with a grip portion 6. Further, in order to perform the biasing operation (oscillation operation) of the front end portion of the tubular member 4 by the grip portion 6 of 7 322944 201206513, the knob 7 is attached. The grip portion 6 and the knob 7 constitute an operation portion. The tubular member 4 is constituted by a hollow inner cylinder 4b having a single cavity (Single_lumen) structure and a cavity provided in the cavity of the outer cylinder 4a and having a housing space 2〇 as shown in Fig. 3. The inner cylinder 4b is present in a specific region extended by the outer cylinder 4a. Further, the inner circumferential surface of the outer cylinder 4a and the outer circumferential surface of the inner crucible 4b are in close contact with each other and fixed. The fixing of the outer cylinder 4a and the inner cylinder can be carried out by a method such as squeezing or welding. As will be described later, the accommodation space 2 is provided with a rod spring and a plurality of pipes (the third figure only has the pipes 31, 32, % (the second = the active wire insertion universal pipe 41, the second operational wire insertion universal pipe) 42. Dimensions, Fig. 2) The tubular member 4 is preferably constructed such that the flexibility in the vicinity of the distal end is relatively low, and the flexibility in the vicinity of the proximal end is relatively low. For example, the tubular member 4 has a configuration On the distal side, the Shore D hardness is 2 〇 to the phantom member I, disposed adjacent to the proximal end of the member 、, and the D hardness of 45 to 72 is softer than the member! Low configuration (4), and the nearest = The flexibility of the end, the Shore D hardness of 55 to (10) is lower than that of the member „low==. The tubular member 4 can be an outer cylinder such as an integral body with the inner cylinder 4b. Or the inner tube servant may have a multi-layer structure. The main part of the tubular member 4 is composed of a synthetic resin such as polyolefin, polyamide, polyether polyamine or polyurethane, and the tubular member 4 is externally It is about 0.6 to 3 mm and has a length of about 5 〇〇 to l2 〇〇 mm. The outer diameter of the tubular member 4 of the present embodiment is about 2 〇 mm and the length. Approx. 322944 8 201206513 Front: The tip electrode 10 and the ring electrode i2 are made of metal such as Ming, Bronze, stainless steel, gold, or metal with good electrical conductivity. The tip end tip electrode 10 and the diameter of the tip end are not particularly limited 'but only the outside of the tubular member 4 is better', usually about 5 to 3. The fifth figure is the section on the line of the i H 2 map. A schematic oblique view of the cross-sectional view of the cross-section of the C_C line on the C_C line of the t1F1 °, and a schematic cross-sectional view on the EE line of the sixth = first figure. In addition, the fifth figure corresponds to the catheter shown in Fig. 4. A schematic view of a state in which the virtual plane is cut. In the bridge and the fifth figure, the duct 2 of the present embodiment is provided with a pair of rod springs 22a and 22b and a plurality of ducts 31 in the tube + IP. 32, 33, 34, 35, 36, 37. The pair of bar springs 22a and 22b are elastic rod-like bodies provided inside the tubular member 4 along the central axis XI of the tubular member 4. In the embodiment, the rod springs 22a and 22b are accommodated in the accommodating space 2G (refer to Fig. 3). One of the pair of rod-shaped bombs D2a and 22b, one of the rods The elastic crystal melon is disposed offset from the central axis of the tubular member 4, and the other bar springs 22b are disposed offset from the central axis XI of the tubular member 4 in the opposite direction. In the form, the rod springs 22a are disposed adjacent to the outer cylinder 4a, and the rod springs 22b are disposed at positions symmetrical with the rod springs with the central axis XI as the axis of symmetry. The materials constituting the rod springs 22a, 22b are formed. The 'system' may include a resin such as nyl〇n (registered trademark) 6 or the like, or a resin such as polyacetamide (PEEK) or polyimine, or 322944 9 201206513 疋 stainless steel (sus), nickel titanium (Niekel titanium) 1 metal such as titanium. ...like reading, by setting a pair of stick-shaped bombs mb, and the mutual axis = the central axis X1 of the member 4 is arranged in an offset manner, which can make the operation line inserted in the Ludao 3 Bu 32 At the time of the stretching operation of 5〇a and 5〇b, the curved portion of the catheter 2 is not bent by twisting the imaginary plane passing through the central axis χ2 of the rod spring 22a and the mandrel X 3 of the rod-shaped scented coffee. The respective points 'arranged on the imaginary plane in the direction in which the central axis of the tubular member 4 is slanted perpendicularly can be bent by the position in which the respective positions before bending are only equalized in the same direction. Therefore, the planarity of the portion of the catheter 2 can be well maintained. In addition, the reading system occupied by the rod spring 22a and the coffee container is smaller than the plate spring. Therefore, it becomes possible to design a wire type in which the tubular member 4 is inserted. For example, in order to insert a wire, a pipe such as a region between the bar-shaped bomb t22a and the bar-shaped tea can be formed. Further, the rod springs 22a and 22b cannot be divided into two spaces as a spring, and can be freely designed according to the arrangement of the pipes. The pair of rod springs 22a, 22b, the distal end of which extends to the vicinity of the distal end of the tubular member 4, the proximal end extends to a specific distance from the distal end of the tubular member 4, the efferent springs 22a, (10) having, for example,匪 The length below. Further, at least a portion of the outer peripheral surface of the rod-shaped springs 22a and 22b extending in the axial direction is buried in the tubular member 4. In the circumferential direction in which the springs 22a and 22b of the present embodiment extend in the axial direction, a region having a length of about 2/3 of the total length of the rod-shaped springs 22a and 22b is embedded in the inner cylinder 4b of the tubular member 4. Thereby, the rod springs 22a and 22b 322944 10 201206513 of the full length are bolted to the tubular member 4, and each of the rod springs 22a and 22b which may be generated when the operation wires 50a and 50b are operated as described later can be restricted. Distortion with respect to the tubular member 4. As a result, the torso stiffness of the catheter 2 is increased, and the flatness of the curved portion of the catheter 2 can be further improved. Further, by this, it is possible to reduce the possibility that the catheter 2 is defective in the shape of the curve, or to break the tubular member 4 due to the twist of the rod springs 22a, 22b. Here, the term "buried" means that, for example, the outer peripheral surface of the rod springs 22a and 22b is in contact with the inner wall of the inner cylinder 4b at about 1/4 or more of the circumferential direction. Further, the range in which the pair of rod-shaped springs 22a and 22b exist can be appropriately set in accordance with the length of the curved region of the guide 2 or the like. In the present embodiment, the guide 2, the rod springs 22a, 22b exist in a range that is substantially identical to the existence range of the arcuate region of the catheter 2, and the distal end positions of the rod springs 22a, 22b are the tip end tip electrodes 1G. The proximal position is roughly the same. "The B-lanes 31 to 37 are along the central axis XI of the tubular member 4 and a is placed inside the inner adjacent portion of the official member 4. The present embodiment is attached to the accommodating space 20 (the side when the 'catheter' The bending part of 2 can be ϋ == Gwana multiple pipes 31 to 37.. Complex pipe... The middle system is configured ^^!!^ Use the mulberry line to insert the general pipe. The imaginary planes 22a and 22b of the pipe Χ2, Χ3 are respectively The central axis of the plane is the other side of the plane H H2 ^ then H1, the pipe 32 is arranged in the false bend to make a deviation of 4 in the 2 direction, and the operation of the catheter 2 placed in the imaginary plane can be as described later. The general pipe fitting may be configured, and when only one of the 1 and the other side faces 2 is disposed in the direction of the line 1 322944 11 201206513 The pipe 33 in the pipes 33 to 37 may be configured to be in the pipe 31 and The central axis XI of the tubular member 4 is included between the pipes 32. Further, the pipes 34 to 37 may be configured to surround the pipe 33 together with the pipe 31 and the pipe 32. The pipes 33 to 37 extend from the grip portion 6 for the purpose of The tip end tip electrode 10 and the ring-shaped electrode 12 are electrically connected and used as a pipe through which a plurality of wires are inserted. The lanes 31 to 37 are respectively formed by a plurality of tubes (complex tube portions), and the plurality of tubes include: the first operation wire insertion general-purpose tube 41 (the first operation wire insertion general-purpose tube portion), and the second operation The wire insertion general pipe 42 (the second operation wire insertion general pipe portion), the first pipe 43 (first pipe portion), the second pipe 44 (second pipe portion), and the third pipe 45 (third pipe portion), The fourth tube 46 (fourth tube portion) and the fifth tube 47 (the fifth tube portion). That is, in the present embodiment, a plurality of tubes having a hollow structure are accommodated in the accommodation space 20, and a plurality of tubes are The hollow portions are pipes 31 to 37, respectively. The inner diameters of the tubes of the present embodiment, that is, the diameters of the pipes 31 to 37 are, for example, about 0.46 mm. The first tube 43 of the plurality of tubes is configured to span the imaginary plane. The one side of the crucible 1 and the other side of the crucible 2. The first operation wire insertion universal pipe 41, the second operation wire insertion universal pipe 42, the second pipe 44, the third pipe 45, the fourth pipe 46, and the fifth The tube 47 is arranged so as to be arranged in the circumferential direction of the tubular member 4, and the adjacent tube portions are circumscribed to each other. In the present embodiment, the first tube 43 is arranged to include the central axis XI of the tubular member 4. The first operation wire insertion main pipe 41 is disposed between the second pipe 44 and the third pipe 45, and these are disposed on one side of the imaginary plane Η1. The second pipe 44 and the first operation wire are inserted in common. The tubes 41 are mutually 12 322944 201206513 • l^V^45^ In addition, the fourth tube 46 and the fifth tube 47 are: 卜切., the universal tube 42 is inserted, and these are arranged in the imaginary plane 另Line = and the second operation wire are inserted into the common pipe":: to the second and second action line insertion general pipes 42 are externally cut. Further, the first to fourth, the first line 47, and the second tube 42 are surrounded by the first tube 43. At least part of the second tube 44 and the fifth round of the circle are arranged to circumscribe the tubular members in a circular direction so that adjacent tubes are circumscribed from each other, and the f-shaped member 4 can correspond to an external force from the eve direction. Become a stable structure. For example, the ring electrode as described above! The 2 series is fixed to the tubular member 4 by a metal ring having a larger diameter than the outer diameter of the tubular member 4. Therefore, when the annular electrode 12 is provided in the past, there is a possibility that the tubular member 4 is deformed. On the other hand, by arranging the tubes as described above, the tubular member 4 becomes a stable structure, and the tubular member 4 is prevented from being deformed by the application of the member 4 during the fitting. Further, the first to fifth g 44 to 47 of the present embodiment, the first operation wire insertion general-purpose pipe 41, and the second operation wire insertion pipe 42 are respectively referred to as the fourth (fourth) (fourth). Thereby, the tubular member 4 can be made to have a more stable structure in response to an external force, and deformation of the tubular member 4 can be more reliably prevented. Further, since the first tube 43 is disposed to intersect the virtual plane H, the number of wires that can be inserted into the tubular member can be increased as compared with the structure having the plate spring. Further, the «1 operation wire insertion universal f 4! and the second operation wire insertion pipe 4 2 are arranged to be spaced apart from the virtual plane H. 13 322 944 201206513 Thereby, the rod springs 22a and 22b can be bent with a smaller force than the case where the second operation wire insertion main pipe 41 and the second operation wire insertion general pipe 42 are close to the virtual plane H. Therefore, the operability of the catheter 2 is improved. The second to fifth tubes 44 to 47 and the f 1 operation wire insertion general purpose tube and the second operation wire insertion general tube 42 are closely fixed to the inner surface of the inner cylinder. The fixing of the tubes to the inner cylinder 4b can be carried out by a method such as squeezing or melting. The first operation wire insertion universal pipe 41 is inserted into the slidable operation wire 50a', and the second operation wire insertion universal pipe 42 is inserted into the slidable operation wire 50b. As shown in Fig. 6, the distance between the operation line 5〇& The operation wire is inserted into the universal pipe 41_ to operate a large spherical armature (Anch〇r) 52a. Similarly, a portion of the distal end of the operation wire is formed with a ball-shaped armature 52b having a larger diameter than the operation wire 50b located in the second operation wire insertion main pipe 4 2 . A concave portion 11 is formed on the inner side of the tip end tip electrode 10, and the recess portion 11 is filled with solder 62. The electric #52a, 52b are buried in the solder 62. Thereby, the operation wires 5/a, 50b are fixed to the solder 62 and the tip end electrode 1A, and are connected to the vicinity of the distal end of the tubular member 4. Further, the proximal ends of the operation wires 50a and 50b are connected to the knob 7 as shown in Figs. 1 and 2 . Thereby, the distal end swing deflection of the catheter 2 can be performed by operating the wires 5〇a and 5〇b of the knob 7 of Figs. 1 and 2. In the present embodiment, the distal end of the catheter 2 can be biased toward the arrow D1 of FIG. 2 by the stretching operation wire 50a, and the distal end of the catheter 2 can be biased by the stretching operation line 5〇b. The direction of the arrow D2 in Fig. 2 is 322944 14 201206513 Here, the operation wires 5a, 5b can be provided by providing the electric tows 52a, 52b' at the distal ends of the operation wire insertions 50a, 50b as described above. b It is difficult to pull away from the solder 62. Thereby, the operational reliability of the catheter 2 can be improved. Further, the operation wire insertions 50a and 5b of the present embodiment are fixed to the distal end tip electrode 1A, but are not particularly limited to the 'operation wires 5〇a, 5〇b'. In the official member 4 and so on. Further, it is preferable that the distal ends of the operation wires 5a and 5b are disposed at the distal end side from the intermediate position in the axial direction of the rod springs 22a and 22b. It is more preferable that the distal end of the operation wires 50a, 50b is disposed on the distal end side of the position of the distal end of the rod springs 22a, 22b by 3 mm in the proximal direction. In the first to fifth tubes 43 to 47, the distal end tip electrode 1A and the ring electrode 12 are electrically connected to each other. For example, a lead wire for a tip end electrode (not shown) electrically connected to the tip end tip electrode 10 is inserted into the first tube 43. The distal end of the lead wire for the tip end electrode is buried in the solder 62. Thereby, the lead wire for the tip end electrode and the tip end tip electrode 10 are electrically connected to each other through the solder 62. Further, the distal end of the lead wire for the tip end electrode can be electrically connected to the distal tip electrode 10 by welding. Further, in the first tube 43, a thermoelectric couple or other sensor that is a temperature sensor that senses the temperature of the distal end of the catheter 2 can be inserted. Alternatively, the first tube 43 may be used as a user to allow the desired liquid to flow out from the front end of the catheter 2. In the second to fifth tubes 44 to 47', a plurality of loop-shaped electrode wires (not shown) each electrically connected to the ring-shaped electrode 12 are inserted in a state of being insulated from each other. The distal end of each of the loop-shaped electrode wires is electrically connected to each of the ring-shaped electrodes 12 via pores provided in the second 15 322 944 201206513 to the fifth tubes 44 to 47 and the tubular member 4. The distal end of each of the loop-shaped electrode wires is fixed to the ring-shaped electrode 12 by soldering (not shown) or by welding. Further, the second to fifth ^44 to 47 may be inserted into various sensors such as a temperature sensor or the fifth tubes 44 to 47 may be used as the above-described catheter. In the present embodiment, the lead wire for the tip end electrode and the wire for the ring electrode are inserted through the first to fifth tubes 43 S 47 ', so that the wires 2 can be prevented from being bent while the catheter 2 is bent. By this, it is possible to avoid the occurrence of irregularities such as irregularities caused by the entanglement of the surface of the catheter 2 (tubular member 4). Here, the respective tubes of the catheter 2 of the present embodiment will be described in detail with reference to Fig. 7. Fig. 7 is a view showing the arrangement of 'in the circumferential direction 4 of the tubular member 4 as LL 7, the first operation line insertion general-purpose tube 41, and the second = line: the general-purpose tube 42' is arranged to be inscribed in the ^ The axis XI is the center of the imaginary slightly rounded s. It can be easily maintained in a slightly rounded shape 2: when the cross-sectional shape of the member 4 is circular, the cross-sectional shape of the guiding member 4 can be easily made, and thus, the sheath or the tube is inserted by the present embodiment. Operational. In addition, the "guide S 2 ' system ensures that the duct 2 depends on the size (thickness) of the tube in the tube, and the size of the largest diameter portion (caliber). The slightly rounded shape can be compared with the case where the two are smaller than the same, and the height of the catheter 2 having a higher cross section is a flat shape or a wire ratio of the polygonal member having a polygonal cross section. That is, 'the number of pluggables can be increased, and the number of functions of the county conduit 2 is 322944 16 201206513. In addition, the burial + liter tubular member: the S-shaped member 4 has a slightly rounded cross-sectional shape, which can provide a more stable structure 1 strength balance 'to become a circle corresponding to the external force from multiple directions) and have the right and the aforementioned "Slightly rounded" means a circle containing a true circle (W, in addition, ° obtains the roundness of the above effect. The round bucket + rod springs 22a, 22b of the piece 4 are arranged in the area surrounded by the tubular structure: with: The two adjacent tubes in the tube and the fourth tube 46 _ body phase of the imaginary slightly round 8 are arranged in the third tube 45, and the spring melon is matched with /j; The enclosed area R1. In addition, the area of the bar-shaped area is enclosed by the tube 44, the fifth tube 47 and the imaginary slightly rounded S due to the static space between the adjacent two tubes (Dead rate. 22a, Ub, can improve the space of the catheter 2: in the middle, the rod-shaped spring melon is perpendicular to the tubular structure 22a is configured to be slightly rounded outside. And the 'bar-like ampoule imaginary slightly round s, rod two J: 5 At the same time, the fourth tube 46 is inscribed in the kite-shaped tab 22b so as to be circumscribed to the second tube 44 and the m 5 tube 47, and is cut in the imaginary center. Thereby, the rod core = the 22b system It is (2) holding the state of the springs 22a, 22a, 22b for 14, so it can limit the action of the twisting direction of the city of the bar-shaped yellow camp 2. For this reason, the degree == degree system can be higher, and It becomes a more stable structure. ... As in the last April, the catheter 2 of this embodiment has a pair of rod springs 22a and 22b, and one of the rod springs is arranged in relation to the tubular 17 322944 201206513 member 4 The center axis is symmetrical to the rod spring 22b of the fish with respect to the central axis X1. Thereby, the guide springs 22 & the opposite direction is offset and the plate-shaped curved portion is provided The number of wires in the component 4 can be inserted into the tubular structure = implementation mode, and can also be changed based on the invention, such a combination of pure deformation (4) lines of various settings. The == application type is also included in the new implementation type of the present invention, the effect of combining the shape of the form. 彳 者 者 , , , , , , , , , , , , , , , , , , , , , , , Shaped spring - the length of the full length = the round face of the financial direction - part of the buried in the tubular Piece 4 = Γ: A wide part can also be embedded in the part of the axis direction; the member 4, that is, the 'bar spring 2: within the range of the effect of the stiffness enhancement, the direction extension = at least the direction of the direction and the circumference - Part of the tube is embedded in the tubular member 4, that is, the catheter 2 of the implementation type, and when the inner chamber is formed by the chamber y y 〇 is a cavity, the (10) 4b has a single-chamber structure for the servant cavity. The structure of the tubes 4 to a of the individual other than the inner tube 4b can be accommodated. ^ The structure of the tube 2 is not particularly limited, and the tubes 41 to 47 can also be combined with the tube member 4. That is, the inner tube 4b is also There may be a multi-lumen style configuration formed by a plurality of cavities constituting the duct Η = 37 and for the brittle-to-rod (four) (four) through-hole. At this time, the tube portion is formed by a specific thickness portion of the inner wall of each L constituting the pipe m to 322944 18 201206513 37. In other words, when the inner cylinder has a matte-like structure, the outer peripheral surfaces of the rod springs 22a and 22b are integrally embedded in the f-shaped member 4, and the twisting rigidity of the duct 2 can be further improved. In the above embodiment, the pair of rod springs 22a and 22b are in a rod shape, but the rod springs 22a and 22b may have a tubular body having a hollow structure. Thereby, the catheter 2 can be lightened and the operability of the catheter 2 can be improved. Further, in accordance with the diameter of the hollow portion of the rod springs 22a, 22b, the wires may be inserted in the middle portion. (Industrial Applicability) The present invention is applicable to a catheter. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic side view of a catheter of an embodiment 1. Fig. 2 is a schematic plan view showing the catheter of the fourth embodiment. The =3 figure is a schematic cross-sectional view on the Α·Α line of Fig. 1. 2 is a schematic oblique view of a section on the Β-Β line. The figure is a schematic cross-sectional view showing the arrangement of the tubes. [Description of main component symbols] 2 Conduit 4 4a Outer cylinder 4b 6 Grip part 7 10 End-pointing electrode 11: A schematic oblique view of the section on the line of Fig. 4 is on the Ε·Ε line of the figure A schematic cross-sectional view. Tubular member inner cylinder screw recess 322944 19 201206513 12a to 12k annular electrode 20 accommodating space 22a, 22b rod spring 31, 32, 33, 34, 35, 36, 37 duct 41 first operation wire plug universal tube 43 1 tube 45 3rd tube 47 5th tube 52a Armature AA section is the 3rd figure CC section is the 5th figure EE section is the 6th figure HI imaginary plane Η side of the side H2 imaginary plane Η the other side R1 Third pipe 45, fourth pipe 46 R2 Second pipe 44, fifth pipe 47 S imaginary circle XI, Χ2, Χ3 center shaft 42 Second operation wire insertion common pipe 44 Second pipe 46 Fourth pipe 50a, 50b Operation line 62 The position of the solder BB is the direction of the distal direction of the D1 and D2 of the fourth figure Η The area surrounded by the imaginary plane and the imaginary circle S and the area surrounded by the imaginary circle S 20 322944