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TW295539B - - Google Patents

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TW295539B
TW295539B TW083105793A TW83105793A TW295539B TW 295539 B TW295539 B TW 295539B TW 083105793 A TW083105793 A TW 083105793A TW 83105793 A TW83105793 A TW 83105793A TW 295539 B TW295539 B TW 295539B
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electrode
patent application
expandable
item
endometrial
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TW083105793A
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Vesta Medical Inc
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • AHUMAN NECESSITIES
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1485Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
    • AHUMAN NECESSITIES
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    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/02Details
    • A61N1/04Electrodes
    • A61N1/06Electrodes for high-frequency therapy
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    • A61N1/40Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • AHUMAN NECESSITIES
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    • A61N1/40Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A61N1/403Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia
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    • A61B2018/00654Sensing and controlling the application of energy with feedback, i.e. closed loop control with individual control of each of a plurality of energy emitting elements
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    • A61B2018/00773Sensed parameters
    • A61B2018/00791Temperature
    • A61B2018/00797Temperature measured by multiple temperature sensors
    • AHUMAN NECESSITIES
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    • A61B2018/00791Temperature
    • A61B2018/00815Temperature measured by a thermistor
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    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • A61B2018/124Generators therefor switching the output to different electrodes, e.g. sequentially
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • A61B2018/1246Generators therefor characterised by the output polarity
    • A61B2018/1253Generators therefor characterised by the output polarity monopolar
    • AHUMAN NECESSITIES
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    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1465Deformable electrodes
    • AHUMAN NECESSITIES
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1467Probes or electrodes therefor using more than two electrodes on a single probe
    • AHUMAN NECESSITIES
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/16Indifferent or passive electrodes for grounding
    • A61B2018/162Indifferent or passive electrodes for grounding located on the probe body

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Otolaryngology (AREA)
  • Plasma & Fusion (AREA)
  • Molecular Biology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgical Instruments (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Thermistors And Varistors (AREA)
  • Disintegrating Or Milling (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Electrotherapy Devices (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Description

經濟部中央標準局員工消费合作社印装 A7 B7_ 五、發明説明() 本案係1992年5月1日申請之序號07/877, 567申請案的 部分延續案。 本發明係有關於一身體器官内壁之原地破壊方法與裝 置,且更特別的是提供一子宮内膜之選擇性破壞作爲治療 子宮出血之子宮切除術的替代方法。 除去或破壊身體器官之内壁的先前技術已經被探究侔 對於外科除去身體器官Μ治療疾病和其他不正常情況提供 一替代方法。先前技術涉及Μ化學品和各種形式之熱能對 於内壁做破壊性療法者諸如射頻,微波加熱,寒冷療法, •雷射外科和電外科。射頻和徼波能量曾經被直接施加於内 壁俾原地產生熱。 有一種型態之熱破壞係描述於美國專利第4,979,949 號,其中一膽囊之黏膜層的熱切除係藉由用一 RF氣球電極 電阻加熱而被逹成。電流藉由一充滿氣球之導電性膨脹液 體由氣球傳送。此裝置在導電液體上有能量損失且無法僅 能適用於一單一電極配置且缺少一完整之個別電源控制及 /或温度察覺器。 在習知療法之另一實例中,氣球導管曾被供給一加熱 流體Μ供熱切除中空之器官,如美國專利第5 . 045 , 056號 中所描述。此外,利用被包圍在膨脹氣球中之單一電極施 加微波及高頻RF能量至身體區域Μ破壊身體組織已被描述 於美國專利第4, 662, 383號及第4, 676, 258號中。 習知技術中所發生之程序上缺點諸如Μ上所述,包括 由於這些程序涉及缺少可確保完全切除之溫度察覓能力均 I- ^ — I 1 装 HH 訂 妓1 (請先閱讀背也之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) Α4洗格(210X297公釐) 4 83.3.10,000 經濟部中央標準局員工消費合作社印製 A7 B7__ 五、發明説明() 一控制而無法做單一之大面積治療。 其他迄今所發展之程序包含在内壁之連續區域用手操 作小型療法工具,係為一種昂貴的手術室程序,且與其他 Μ往的熱氣球療法同樣地在均一結果之確保上有限。 因此,本發明之一項目的為提供一重可完成安全且迅 速之子宮内膜切除而不需在内壁之切除期間有視凳上接觸 的新穎方法與裝置。 另一項目的是提供一種子宮内膜切除之裝置與方法, 其可在一門診病人基礎上實施而不需要使用手術室。 本發明之諸目的可Μ由一利用與子宮内膜之内表面相 一致之可膨脹構件實施。該可膨脹構件被充滿一非導電性 介質且一 RF電流通過實質上子宮内膜的整個表面。此電流 足Μ在一單一操作中使子宮內膜電阻加熱至一 45t;至90t: 之間範圍的溫度歴一足以破壞內壁細胞而同時維持子宮肌 層之平均溫度在一大致42°C或較低之溫度的時間。RF電流 具有一至少250 kHz且低於100 MHz之頻率。 依據本發明之方法包含揷入一未膨脹狀態之導電性, 可膨脹構件經由子宮頸開口插入子宮腔内且接著使構件擴 張而與子宮内膜表面建立表面接觭,並且於其膨脹狀態施 加RF電流至構件。 本發明之又一目的爲提供導電性可膨脹構件*該構件 包括一薄囊,此薄囊於一表面上具有一列分離電極且還具 有一與各分離電極相結合之熱敏電阻俾對每一電極提供一 反饋溫度察覺器。多數分離電極係獨立且依序地Μ熱敏電 1·--,------Α装------訂------Η I (請先閲讀背^-之注意事項再填寫本頁) 本紙張尺度適用中國國家揉準(CNS ) Α4規格(210Χ297公釐) 5 83. 3. 10,000 經濟‘邱中央標準局員工消費合作社印製 A7 __;_ϋ_ 五、發明説明() 阻溫度反饋激勵而使子宮內膜溫度到達一所需之程度。 本發明之再一目的係提供一具有一特定結構之電極俾 使得加熱被集中在電極之邊緣而可藉由提供多數貫穿電極 之通孔或者Μ —行列圖案形成電極而達成均一之加熱。 本發明之另一目的為提供一可自由使用之手持器具W 及電極裝配組合Μ將切除裝置送到子宮並於完成切除時縮 回裝置。 本發明之又一目的係在一可膨脹構件上提供一列分離 電極Μ及相結合之分離熱敏電阻,此可膨脹構件具有一列 電源線,每一電源線將電力送到一單一電極Μ及相結合之 熱敏電阻以對子宫内膜之溫度調節提供一溫度反饋。 對本發明更完整之認知Μ及本發明之許多附隨優點可 參照下列之詳細說明並參考附圖以獲得更進一步之瞭解, 其中: 第1圖係一在一子宮内呈膨脹型式之做為可膨脹構件 之導電氣球的橫截面圖; 第2圖係未膨脹狀態之第1圖裝置之視圖; 第3圖係一繪示子宮内膜小片段與膨脹之構件間關係 的放大橫截面圖; 第4a-b圖係一利用多數表面片段而各表面片段具有一 分離導電表面和一溫度察覺器之可膨脹構件實施例之視圖 y 第5画係第4圖所示之多段元件之電源的概要圖; 第6圖繪示具有多孔電極而在可膨脹構件之外部表面 I- I ^ I I ^ I I I I —, I 訂 I I —-^ (請先Μ'讀背&-之注意事項再填寫本頁) 本紙張尺度適用中國國家揲準(CNS ) Α4規格(210Χ297公釐) 6 83. 3. 10,000 A7 B7
五、發明説明() 上有繪示之電力軌跡的多段元件實施例; 第7圖繪示在可膨脹構件內部之熱敏電阻軌跡和圓形 布線跨接襯墊; 第8a和8b圖繪示在第6和第7圖之可膨脹構件内部和外 部上的雙面電極/熱敏電阻軌跡; 第9圖繪示一利用欲被黏結至可膨脹構件上之扁平金 靨化原料的實施例,該原料係被排列成一蛇形結構; 第10a-b圖繪示將可膨脹構件送至子宮内之囊装置; 第11a-c圖繪示在一縮回位置之第10圖中的囊裝置並 繪示放氣之可膨脹構件; 第12圖概要繪示囊裝置對電力產生源以及測試構造的 連接; 第13圖係第5圖之溫度測量電路之一實施例的概要圖 ;以及 第14圖係第13圖之一相等實施例,繪示有效組織分流 Ο 參閲圖式,其中在所有圖式中相同之參考數字檫示相 同或相對應之部分,並特別參閲第1画,為本發明利用一 導電性氣球作爲可膨脹構件之一横截面圖,而以第2圖繪 示在氣球元件充氣之前第1圖之相同裝置。子宮2由環嬈子 宮腔之子宮肌層組織4所組成。正常之子宮腔或包封結構 係一具有約略爲一倒三角形之形狀的扁平腔室,以二上方 角與卵巢藉由輪卵管6相連通,其底部敞開通入子宮頸管8 。包封結構之整體表面包括輪卵管6M及覆蓋一習稱為子 nil — - n n I n J n I I - -- I T 1 1 I-__________;1 - / 淨 T 口 ^ {請先KI-讀背私之注意事項再填寫本頁} 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家樣準(CNS ) A4規格(210X297公釐) 7 83. 3. !0,〇〇〇 295539 A7 B7 五、發明説明() 宮内膜之薄層組織的子宮頸管8入口。子宮内膜細胞之選 擇性破壊為本發明所揭露之改良方法與裝置的目橒。 在第1圖中所揭露之單極電極糸統擴張成與欲被治療 之子宮内膜表面相一致且此擴張並伸長子宮内膜Μ減少表 面皺襞。射頻電流通過被擴張之子宮内膜表面將子宮內膜 之溫度提高至451C與90°C之間歷一足Κ破壞子宮内膜細胞 之時間,較佳為10秒Μ內。溫度被維持到子宮内膜組織被 破壞為止*最佳者係藉由一 551至65Τ;間之溫度至多10分 鐘而達成。 _電流通過或沿箸可膨脹構件之表面且可膨脹構件之内 部係充滿一非導電性物質諸如流體。可膨脹構件可為任何 可被壓縮或者製備成一小直徑形狀Μ供插入子宮頸且膨脹 或者在插入之後充氣而使之擴張的材料或物體。此一可膨 脹構件與子宮内膜建立直接之接觸或者容積耦合。一第二 電接觸可藉由接觸病人皮虜之一大面積的接地板或片而發 生俾完成電路。. 流經組織之電流由於組織之電導而造成電阻加熱。功 率密度隨距電極之距離Μ距離之四次方的倒數減小。因此 ,任何所產生之熱被集中在子宮内膜以及鄰接環繞之肌肉 組織,在本發明之持別狀況中為與内壁接觸之子宮肌層。 由於子宮肌層4係高度充滿血管者,熱之除去迅速發生。 結果,子宮內膜12之溫度可比子宮肌層4和子宮的其餘部 分更快被加熱至一破壊溫度。因此,由於此一溫度關係, 子宮内膜之切除可利用局部麻醉Μ—簡單之醫療過程被安 J---;-----| 裝------訂------— (請先聞讀背Λ·之注意事項再填寫本頁) 經濟部中央標準局員工消费合作社印製 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) 8 83. 3.10,000 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明() 全地逹成。此外,此為一項以習知技術糸统之·部分費用而 以比其他子宮内膜切除危險性小即可獲得之服務。 充氣之氣球或囊如第2圖所示被插入子宮腔15內且接 著氣球之可Μ—氣體或一非導電性液體膨脹W使之延伸並 充滿子宮腔而與擴張之表面相一致,如第1圖所示。氣球 14之部分伸入_卵管6之入口且沿著整體子宮内膜表面12 延伸至子宮頸8。氣球被附箸至管16且與其成流髏密封, 管16包圍一較小之流體遞送管18以及一含有導體之引線Μ 及察覺器之另外引線的電溴20。多數溫度察覺器24如圖所 示被附著至氣球之内表面。或者,此一引線結構可被每一 察覺器之引線對22所取代。溫度察覺器24係習知之熱敏電 阻或熱電偶且係位於氣球將接觸對於過度加熱最敏感之子 宮内膜表面區域之地帶上。溫度察凳器亦可爲光織溫度察 覺器。該流體遞送管18經由一 Μ下將參照第1 3圖說明之習 知流體控制糸統被連接於一氣體或液體來源。 第3圖係一繪示子宮内膜之小Η段與第1圖之可膨脹氣 球元件之間關係的放大橫截面圖。被支持於子宮肌層4上 之子宮内膜内壁12典型地是一即使在被膨脹之氣球元件1 4 擴張之後仍不規則之表面。氣球1 4之外表面上的導電表面 3 5Μ及子宮内膜12—之間的電接觸可籍由Μ —生理無毒性 且非剌激性之習知導電溶液,糊狀物或凝膠37覆蓋氣球之 外表面而被改進。包括習知使用於去纖維額動器之表面覆 蓋的習知型態凝膠和糊狀物的適當導電介質可被使用。適 當導電凝膠之實例包為由含水電解質溶液諸如生理食鹽溶 J--.-----1 装------訂------"— (請先閱讀背Φ-之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) Α4規格(210Χ297公釐) 9 83. 3.10,000 經濟部中央標準局員工消費合作社印聚 A7 B7 五、發明説明() 液等者所製成之羧甲基绱維素凝膠。導電溶液,糊狀物或 凝膠可藉由填滿氣球表面之細孔以及子宮内膜表面中之不 規則而增進氣球與子宮内膜之間的電接觸。 可膨脹氣球或囊可為一彈性體聚合物諸如一天然或合 成橡膠,其係藉由將聚合物與導電性粒子諸如磺或導電金 靥粒子混合而成爲導電性。或者,亦可藉由導電性材料諸 如一導電性凝膠之表面覆蓋,或一覆蓋於氣球或囊壁外表 面或内表面之導電金屬而成為導電。導電性塗覆可藉由習 知之蒸氣澱積,電澱積,醆鍍等被施加。 一較佳之氣球包括一薄,非伸展性聚合物薄膜諸如一 聚酯(MYLAR)或其他可撓熱塑性或熱固性聚合物薄膜的 薄、非伸展性聚合物薄膜,例如具有一導電性金屬被覆於 其表外表面或内表面。此薄膜形成一在其完全擴張形式具 有一可伸至器官且造成與欲被破壞之子宮內膜内壁接觸的 形狀和尺寸。設若囊壁之厚度少於約0. 25毫米,非伸展性 囊之内表面可被覆導電性材料。 可膨脹構件之表面可爲一開口,多孔材料,諸如一泡 沫體 > 或可容納一數量確保相對之子宮内膜表面有令人滿 意之電接觸的導電溶液,糊狀物或凝膠的類似籠形網狀組 織材料。表面可被導電物質所被覆或浸透。 第4圖繪示一利用有多數作爲可膨脹囊構件39之表面 片段的氣球的實施例。每一表面Η段具有一導電表面以及 一溫度察覺器。在此特定實施例中,氣球具有一在内表面 或外表面被覆有導電性金屬之分段電極被覆俾容使電力控 本紙張尺度適用中國國家標準(CNS ) A4規格(2丨0X297公釐) 83.3. 10,000 —,.--^-----f 装------訂------Y — (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 A7 ---^___B7^_ 五、發明説明() 制傳送至各片段。每一片段40係藉由習知引線連接至一電 源(未示於第4圖中)°每一導電Η段40亦具有藉習知導 線被連接至一開關矩陣之一熱敏電阻42。第4Β圖繪示囊電 極39之一頂視圖且特別表示一延伸通過囊電極中央之内腔 44的特激。內腔可使光導被插穿電極之中央。換言之,有 一内部內腔管44固定至扁平薄膜之中心且接箸展開肋46被 固定俥提供一可支持内腔之剛性構造。 第5圖係電源Μ及Μ上例如參照第4圖說明之多段氣球 開關矩陣的概要圖。電線藉由如第5画所示之連接器138連 接至第4圖之囊的電-熱敏霄胆對。熱敏電阻引線被連接至 矩陣開關裝置組合1 34且電極引線被連接於開關裝置組合 1 36。每一熱敏電阻42係藉由溫度測量電路128Μ及緩衝放 大器126在於轉換器116中被轉換並被饋入電腦114之前取 樣。溫度測童電路將測得之溫度熱敏電阻參考電壓132比 較。電極開關136相應於電腦114之輸出铋由光隔離器控制 。RF輪入之輪入電力通過過電壓電流防護器11〇且在接受 抑制單元124之電壓遏止之前藉由帶通過濾器122過濾。電 壓係藉由變壓器138,140與142隔離,來自變壓器142和 144之變壓器電壓V,和彳《被RMS-DC轉換器118轉換成一被饋 入轉換器116之RMS電壓。在轉換之前,信號h和Vu亦自電 腦114被饋入一高速模擬多工器RF,來自電腦114之控制 係透過介面112被提供。 第4圖之電極構造的一變化係示於第6圖中,其中多孔 電極150係以其電力軌跡152繪示。第6圖之此一特殊電極 I---:-----T 装------訂------1 (請先M·讀背16.之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 11 83. 3. 10,000 A7 B7 五、發明説明() 囊係Μ在囊之外部上的多孔電極150表示。 第7圖繪示在囊内郜上之熱敏電阻共同侧軌跡154,其 係備有Μ安裝位置157供做熱敏電阻之基底的圓形布線跨 接襯墊156。共同側軌跡對於電極和相闢的熱電阻器提供 電力。第7圖繪示囊之二内側。 第8a-b圖繪示一雙邊電極之外部與内部,具有多孔電 極160之熱敏電阻線軌跡在外部且熱敏電阻布線襯墊162與 電極引線164M及熱敏電阻安裝位置166在内部。囊之内部 與外部間的連接係藉由第8a和8 b圖中之檫示Vi a之連纊性 表示。苐8b圖詳細繪示在頂部或外部表面上具有電極160 且在下部或內部表面上具有電力軌跡164及熱敏電阻布線 襯墊以及安装位置166之囊的横截面圖。第8b圖繪示熱敏 電阻163安裝在安裝位置166上,電力軌跡與熱敏電阻之間 的連接係藉由熱敏電阻引線169爲之。第8b圖清楚繪示在 多孔電極160上除了一孔Μ外所有孔的深度均抵逹基體或 囊174。標示Vi a之孔延伸通過囊之整體而作爲多孔電極 160與底部或内部表面上之電力軌跡164之間的電連接。第 8a圖之實施例相當於電力軌跡和第7圖之結合表面與第6圖 之多孔電極的內部繪示结合,但第8a圖在内部表面上具有 電力軌跡而第6圖之實施例在外部表面上的多孔電極具有 電力軌跡。 第6,7與8圖中之任一圖,無論是内部或者外部,必 須瞭解僅係代表一必然具有四表面之囊的二表面。在充氣 之前,該囊可被視為一具有二外部三角面(頂及底)以及 請 先 閲― 讀 背 之 注 意 事 項 再 填 寫 本 頁 装 訂 經濟部中央標準局員工消费合作社印製 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 12 83. 3. 10,000 經濟部中央標準局員工消费合作社印製 A7 B7 五、發明説明() 二内部三角面之三角形。 電極構造之又一變化係示於第9圖中,該圖繪示一扁 平金屬化之原料當成電極170和17 2被鈷结至囊之頂部與底 部之外面。該被金颶化及黏合之電極形成一蛇形電極圖蓀 俾促進區域之均一加熱。 第10A和B圖繪示用來插放依照上述所討論之任一實施 例構造的囊電極的囊器具。第10B圖係一應用裝置之側視 圖,繪示具有一主管和一覆蓋引線之縮緊套。一缫維束係 位於可藉由如第3圖所示之內腔被連接之施力器中心。施 力器裝置175具有一空氣入口 176和一電極布線揷入部分 177M及通過一内腔之光纖入口 178。囊電極ISO之蓮動係 被對準導件和與一指捻止回爪182共同作用之鞘伸縮鈕181 所控制。第10 A圖之施力器繪示在一伸出但未膨脹位置下 之囊電極。 第lU-c圖繪示在縮回位置之第10画囊裝置,而第Ub 和11c圖係分別沿A-A’和B-B’線所取之横截面圖。第11c圖 繪示放氣囊在縮回位置沿B-B ’線相對於主管之位置。施力 器175之剩餘特徵如同第10圖所示。 依據第6-9圖之任一實施例的施力裝置175與電極氣球 190之連接之繪示係示於第12圖。一充氣泵193提供使氣球 190膨脹用之空氣而電極帶195提供連接至控制糸统1〇〇之 參考電極。RF發電機197藉由電外科界面電猓199供做第5 圖所概要繪示之控制糸統的_入電源。控制模組203和界 面控制器204與電腦114連接。 I.--^-----1 装-- (請先閱讀背*.之注意事項再填寫本頁) ,ιτ r 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 13 83. 3. 10,000 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明() 一旦第12圖與第5圖之電極条統和控制糸统被連接, RF電極被分離地、獨立地且順序地以激勵而熱敏電阻器溫 度反饋使子宮内膜的溫度上升至一所需水平。糸統以一根 據來自一習知電外科電源197M自動化方式完成此動作。 如前文所討論,電極可具有多種特殊結構且由於有各種不 同之電極結構,加熱係集中於電極之邊緣俾提供均一加熱 。熱集中於電極邊緣之一實例係獲自一其中孔係穿設於電 極之子宮內膜的實施例,如第6和8圖所示。均一加熱亦可 藉由使電極以線條圖案延伸諸如第9圖之蛇形圖案構造而 獲得。 由於這些構造種類,本發明之沿療方法以及電極元件 提供一增加之電流密度,為加熱時可獲得之“電極邊緣長 度”的函數。此外,如前文所討論,電極可在囊之外表面 而電力軌跡,熱電阻器以及熱電組引線可在囊之其他表面 〇 在第6-9圖之實施例中,各種電極圖案係μ對於電極 和相關聯之熱敏電阻有共同之電力軌跡爲特徴。亦即,一 電源引線提供一個別電極Μ及其相關聯熱敏電阻之電力俾 藉由減少一半所需要之電源引線而節省囊電極之構造。在 此諸實施例中,每一電極具有一與RF電源引線共有的相應 熱敏電胆引線。來自所有熱敏電阻之第二引線接箸被連接 在一起而形成一例如在第7和8a圖中所示之共同熱敏電阻 。此一配置供一優點卽僅需要N + 1條引線驅動一具有N傾電 極和N個熱敏電阻之切除氣球。但是,由於此一構造,第5 本紙張尺度適财® S家料(CNS ) A4規格(21GX297公釐) _ 14 - 81 3,10 000 I.---:-----f 装------訂------Λ- (請先閱讀背面之注意事項再填寫本頁) 295539 A7 B7 五、發明説明() 經濟部中央標準局員工消費合作社印製 圖之温度測量電路128具有超過對於每一熱電阻器和每一 個別電極具有一分開電源引線的額外要求。電極和熱敏電 阻有分開電源引線之構造係習知者一且多種個別電極之溫 度測量手段中之任何一種皆可利用。 各電極和各熱敏電阻利用一共同電源所引起之特殊化 規定可藉由如第13画所示之實施例而符合。在第13圖中, RF電源係選擇性地被經由開關矩陣210施加Μ使其可被施 加至所選擇之電極。電極/熱敏電阻電路在圖中右手側大 抵上以220表示,一特別的實例係具有以電咀器222 , 224 和226代表之三値電極與三個熱敏電阻。一參考電壓vrei 係被一操作放大器隨動器32缓衝且在進入測量開關矩陣 240之前通過電阻器233。電阻器233之輸出係被操作放大 器34缓衝。測量開閧矩陣240之輪出被饋入濾波器244, 246和248,其係代表阻斷高頻RF但通過DC和非常低頻電壓 之低通濾波器。 氣球熱敏電阻共同引線227通過RF 249接地。 在操作期間,RF電源藉由操作RF電源開關矩陣210被 施加至一特別需要之電極或數電極。熱敏電阻之電阻222 ,224或226的測定與被連接至RF電源之恃定電極無關。爲 了提供RT 1 (222)之一測量,測量開關矩陣240被安排成連 接引線1至電阻器233之右手側而所有其他電極被安排成連 接至隨動器234之輸出。此一特別的安排和配置迫使電壓 VT與VT = RTU(Rb + RTl)。因此可容使RT1M已知值Rb被測定 。由於其他來自電路220之引線2,3被隨動器234保持於同 請 先 閱- 背 意 事 項 再 装 訂 本紙張尺度適用中國國家揉準(CNS ) A4規格(210X;297公釐) 83. 3.10,000 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明() 一電壓,在這些引線之任一者之間無電壓差且因此無電流 滾經其間。 在引線間缺少電流係極端重要者,因接觸電極之組繃 造成一有效分流路徑,若無第13圖之迴路,該分流路徑則 將Μ其他方式影饗所測得之電壓VT。 由組織造成之有效分流係Μ第14圖之相等電路繪示, 該圖顯示電極261,262和263之間連接之有效組織電阻253 與 254。 囊電極係依據一方法被構成,該方法中一雙面薄平膜 被覆蓋在一面以增加電極厚度且一利用石版印刷技術之沈 積掩模被提供做為一在厚面上之電極圖案。接箸一掩模被 沈積做為導體,其可在一第二面上成爲溫度察覺元件。接 箸,未掩蓋之導體被蝕刻留下所需之圖案。 熱敏電阻42係利用表面裝置技術波提供且連結之內腔 與展開肋一起被設置在扁平膜之中央。氣球接著被摺壘且 於近端密封至主管,内、外同心管如第10圖所示彼此相對 滑動。接著,導體被撝至主管之外側至裝置接近施力器之 手柄的端部。外管被置放在導體之上且被熱收縮,如第 10b圖所示。最後,第10圖或11圖之施力器手柄被紐合。 其他提供一電極氣球之形式可被使用,諸如利用一吹 塑預製件或者以銅或聚醯亞胺薄膜傳導元件在一柔性之氣 球表面形成氣球。此外,此氣球可被形成為一配合在内乳 膠氣球上之"襪形套子”,而此襪形套子為柔性裝置。 利用本發明容許使用低準確性熱敏電阻,其中定橒可 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 83.3.10,000 I— n I n ^11 |\ I— I I n If f— T n am I —I n dr (請先閱讀背*之注意事項再填寫本頁) A 7 B7 五、發明説明() 被儲存在裝置之手柄中的記憶體晶片中。電極之附箸於囊 可藉導電性黏劑或軟焊達成。 第10和11圖之施力器可藉由將氣球之前端向後拉回内 部並使氣球陷縮於其周圍而被展無。為了加速展開,圖案 可Μ特殊種類之鞘脊骨而被形成俾幫肋圖案化之電極在施 力器中摺叠。 顯然地,依照上述教示本發明可能有許多修改與變化 。因此,應瞭解在所附申請專利範圍之範圍中本發明可以 不同於本文中所詳細說明之方式被實施。 I.--:-----装------訂------Ψ— (請先閲讀背*-之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標隼(CNS ) A4規格(210X297公釐) 83. 3.10,000

Claims (1)

  1. 經濟部中央榡隼局貝工消费合作衽印製 A8 B8 C8 D8 六、申請專利範圍 第83105793號專利申請案申請專利範圍修正本 1. —種選擇性破壞一身鱧器官之子宮内膜内壁的子宮内 膜切除装置,包括: 一導電性,可造成與該欲被破壞之子宮内膜内壁 之電接觸膨脹電極裝置,該可膨脹電極裝置含有一非 導電性膨脹介質,侔延伸該電極裝置Μ達成與該器官 所造成之電接錡; —Μ—大於250 kHz之頻率被連接至該可膨脹電 極之射頻電源裝置,可供提供電流至該電極裝置以將 該子宮内膜内壁加熱至一介於4 5 °C至90之間的溫度 Ο 2. 依據申請專利範圍第1項之子宮内膜切除装置,其中 .該頻率係在250 kHz和100 MHz之間的範圍内。 3 .依據申請專利範圍第1項之子宮内膜切除裝置,其中 該可膨脹電極裝置包括一被連接於一膨脹流體入口装 置之導電性氣球且其中該氣球充滿該非導電性膨脹介 質。 4. 依據申請專利範圍第3項之子宮内膜切除装置,其中 該氣球係導電性彈性體。 5. 依據申請專利範圍第1項之子宮内膜切除装置,其中 該可膨脹電極装置係一塗覆有導電性材料之可延伸囊 〇 6. 依據申請專利範圍第5項之子宮内膜切除装置,其中 該可延伸囊之内表面係塗覆有導電性材料且囊壁厚度 係小於0. 25毫米。 本紙張尺度適用中國國家標率(CNS ) A4規格(210X297公瘦) ---------1------ΐτ------# » - , (請先閲讀背面之注意事項再填寫4負) A8 B8 C8 ___ D8 六'申請專利範圍 7 .依據申請專利範圍第丨項之子宮内膜切除裝置*其中 該可膨脹電極装置係一設有多數分離電極區域之非擴 張性囊。 8. 依據申請專利範圍第7項之子宮内膜切除裝置,其中 每一該電極區域包括一熱敏電阻。 9. 依據申請專利範圍第1項之子宮内膜切除装置,其中 該可膨脹電極装置包括至少一溫度察覺装置。 10 .侬據申請專利範圍第1項之子宮內膜切除裝置,進一 步包括一可控制該電源對該可膨脹電極装置之輸出的 控制裝置。 11.依據申請專利範圍第1項之子宮内膜切除裝置',其中 該可膨脹電極装置包括一在一可膨脹構件之外側上的 扁平金屬化電極且其中該金屬化材料係以一蛇形方式 被安排而形成一圖案化電極。 12 .依據申請專利範圍第8項之子宮内膜切除裝置,進一 步包括一可對每一熱敏電阻之_出反應Μ控制該電源 對該可膨脹電極裝置之出。 經濟部中央標準局員工消費合作社印製 1 3 .依據申請專利範圍苐10項之子宮内膜切除装置,其中 該控制裝置包括至少一熱敏電阻以供測量該可膨脹電 極裝置之溫度,且其中該控制裝置包括一具有一參考 值之熱敏電阻,且其中該控制裝置相應於該装置提供 一輸出以供比較俾控制該電源之蝻出。 14 .依據申請專利範圍第1項之子宮內膜切除裝置,其中 該射頻電源装置提供電流至該電極裝置以將該子宮内 19 (請先間讀背面之注意事項再填寫本頁) 後 本紙張尺度適用中國國家標準(CNS ) Α4说格(210Χ297公釐) 經涛部中央標準局員工消费合作社印製 Α8 Β8 C8 D8 六、申請專利範圍 膜内壁加熱至一 45°C至901之間的均一溫度歴一十分 鐘或更短之時間。 15.—種可選擇性破縻一身體器官之子宮内膜内壁的子宮 內膜切除裝置,該裝置包括: 一手持施力器以供手控一被包含,可膨脹,可擴 張之電極構造,該施力器具有一可供容纳一非導電性 膨脹介質且於該電極在一延伸位置時將該膨脹介質傳 送至該可膨脹電極,該施力器進一步包括一將電力傳 送至該電極裝置之電源輪入。 16 .—子宫内膜切除總成包括: 一含有一可延伸且可膨脹電極構造Μ供角手插入 .—子宮內,其中該施力器包括一膨脹流體入口 Μ及-提供與該電極之電接觸的電輪入。 17. —種電極導電性可膨脹電極總成,可提供與一身體器 官之子宮内膜内壁之電接觸以破壊該子宮内膜内壁, 該缌成包括: 一具有一内表面和一外表面之可膨脹乘,該内、 外表面之一者係提供有多數分離電極區域且該内、外 表面中之另一者係設有對應於該多數電極之每一者的 多數熱敏電阻; 該多數電極之每一者進一步包括多數孔,該多數 孔中之一孔由該外刨表面至該内側表面延伸通過該栽 且該一延伸孔在該電極與該其他表面之間提供電連績 性; 本紙張尺度適用中國國家標準(CNS ) Λ4規格(210X297公着) (请先閲讀背面之注意事項再填寫本頁) 訂 線! Asp 申請專利範圍 該其他表面對於該等電掻之每一者進一步包括一 電源引線,該引绵從該囊之一末端延伸至該等延伸孔 之各値孔,各該電源引線亦延伸至該等熱敏電阻之各 別電阻, 依此在該等電極中之每一電極内之多數孔與該電 源引線之間的關係可可在每一各別電極之一表面上提 供均一之加熱。 1S.依據申請專利範圍第1項之子宮内膜切除装置,其中 該可膨脹電極装置係設有多數分離電極區域以及一與 各該多數分離電極區域相結合之熱敏電P&且進一步包 括多數電源引線,每一引绵係波電連接至該·多數分離 .電極區域之各別一者以及該等熱敏電阻之各別一者。 19 ·依據申請專利範圍第1 7項之可膨脹電搔總成,其中每 一該熱敏電阻係進一步被連接至該其他表面上之一共 同接地引線。 20 .侬據申請專利範圍第1S項之装置,包括一溫度測量装 經濟部中央梯準局身工消費合作社印装 置,該装置包括一可選擇性施加該RFII源至該多數電 極引線之至少一者的第一開關矩陣,一第一參考電壓 ,一第二參考電壓以及一將該至少一電極引線之一選 擇引線連接至該第一參考電壓而同時將該等電極之所 有其他電極連接至該第二參考電壓。 21 本紙铢尺度逋用中Η國家標準(CNS ) A4洗格(210X297公釐)
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AU6625594A (en) 1994-11-08
EP0693955A4 (en) 1998-01-07
DE69431950D1 (de) 2003-02-06
US5713942A (en) 1998-02-03
JP3566722B2 (ja) 2004-09-15
IL109296A0 (en) 1994-07-31
US5443470A (en) 1995-08-22
WO1994023794A1 (en) 1994-10-27
CA2159483A1 (en) 1994-10-27
ES2189801T3 (es) 2003-07-16
JPH08508912A (ja) 1996-09-24
DE69431950T2 (de) 2003-11-13
EP0693955B1 (en) 2003-01-02
CA2159483C (en) 2000-02-22
ATE230284T1 (de) 2003-01-15
US6041260A (en) 2000-03-21
EP0693955A1 (en) 1996-01-31

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