TW201242570A - Apparatus and methods related to constrained deployment of cryogenic balloons for limited cryogenic ablation of vessel walls - Google Patents

Apparatus and methods related to constrained deployment of cryogenic balloons for limited cryogenic ablation of vessel walls Download PDF

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TW201242570A
TW201242570A TW101114666A TW101114666A TW201242570A TW 201242570 A TW201242570 A TW 201242570A TW 101114666 A TW101114666 A TW 101114666A TW 101114666 A TW101114666 A TW 101114666A TW 201242570 A TW201242570 A TW 201242570A
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balloon
catheter
shaft member
anatomical
lumen
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John Kelly
Brian Kelly
Gary Kelly
Barry Mullins
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Medtronic Ardian Luxembourg
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    • AHUMAN NECESSITIES
    • 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
    • A61B18/02Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00005Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00041Heating, e.g. defrosting
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00166Multiple lumina
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00214Expandable means emitting energy, e.g. by elements carried thereon
    • A61B2018/0022Balloons
    • A61B2018/00244Balloons adapted to separate target tissue from other tissue
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00214Expandable means emitting energy, e.g. by elements carried thereon
    • A61B2018/0022Balloons
    • A61B2018/0025Multiple balloons
    • A61B2018/00261Multiple balloons arranged in a line
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345Vascular system
    • A61B2018/00404Blood vessels other than those in or around the heart
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00434Neural system
    • AHUMAN NECESSITIES
    • 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
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00505Urinary tract
    • A61B2018/00511Kidney
    • AHUMAN NECESSITIES
    • 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
    • A61B18/02Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • A61B2018/0212Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter

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  • Health & Medical Sciences (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
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  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Materials For Medical Uses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Surgical Instruments (AREA)

Description

201242570 六、發明說明: 相關申請案之交又參考 本發明主張20U年4月25日申請之美國臨時申請案第 61/572,288號之權利,該案之全文以引用的方式併入本文 中。 【發明所屬之技術領域】 本技術大體而言係關於低溫療法,且詳言之,係關於 用於低溫冷卻解剖導管或其他組織之内表面之目標區域的 裝置及方法。 【先前技術】 在廣泛範圍之以導液管為基礎之介入性程式中,低溫 療法:為有用的治療形式。舉例而言’低溫療法冷卻可: 以調節神經或影響接近解剖導管之其他組織(例如,血管、 其他人體内腔,或人體中之其他區域)。此情形可減少不· :經活動以達成治療益處。可使用利用低溫療法之以導: 管為基礎之神經調節’(例如)㈣節神經且藉此減少疼 痛局部交感神經活動、全身性交感神經活動、相關聯病 理’及其他病況。此外’可使用低溫療法(例如)用於使 腫瘤脫落且治療狹窄症。在一些低溫療法程式中,經由可 =導管内膨脹的氣球來遞送低溫療法可為有用二。此 專氣球可操作性地連接至體外支撐元件(例如,致冷劑供 應件)。隨著用於外科介人術之低溫療法之適用性^續擴 201242570 展’需要相關聯器件、系统及方表 、 示既及万法之創新。此創新有可能 進 步擴展低溫療法作為用於;j令自由心 1左忭马用於改良患者健康之工具之作 L發明内容】 本發明揭示與藉由 球而低溫脫落一導管之 舉例而言,一導液管可 之脫落;及一強制元件 行以使該低溫氣球之一 非目標組織,且防止該 連續或螺旋狀脫落可有 疾病’包括(但不限於 竭' 顯影劑腎病變、心 使用各種裝置及方法強制一低溫氣 内表面之一部分有 包括:一低溫氣球 為(例如)一第二可 充 ’其安置成與該低 部分偏轉或偏移以 非目標組織之脫落 效地用於治療多種 )高血壓、心臟衰 律不齊及心肌梗塞 氣氣球或一或多個 關的具體實例。 ,其用於導管壁 溫氣球實質上平 遠離該導管壁之 。部分圓周、非 腎、心腎及其他 竭、腎病、腎衰 。該強制元件可 自膨脹又指。 【實施方式】 可參看以下圖式來更好地理解本發明之許多態樣。該 等圖式中之組件未必按比例繪製。實情為,強調清楚地說 明本技術之原理。 現參看諸圖來描述本技術之特定具體實例,其中相似 參考數位指示相同或功能上類似元件。在以下描述中關於 相對於治療臨床醫師之位置或方向使用術語「遠端」及「近 端」。「遠端」及「在遠端」指代遠離臨床醫師之位置或在 201242570 遠離臨床醫師之方向上之位置。「近端」及「在近端」指代 臨床醫師附近之位置或在朝向臨床醫師之方向上之位置。 以下【實施方式】揭示技術之特定實例,但其並不意 欲限制本技術或本技術之應用及使用。舉例而言,儘管【實 施方式】在血管(諸如,腎動脈)治療之情形下揭示本技 術’但本技術亦可用於其被視為有用的任何其他人體通道 或組織中。此外,不意欲藉由本文所呈現之任何所表達或 暗示之理論而束縛。 近年來,組織之脫落已用以調節貢獻於腎功能之神經 纖維。可以各種方式實現脫落,包括遞送射頻(rf )能量、 其他s適之加熱此量或低溫療法。預期腎神經之調節有用 於治療多種腎、心腎及其他疾病’包括心臟衰竭、腎病、 腎衰竭、高血壓、顯影劑腎病變、心律不齊及心肌梗塞。 此外,預期腎神經調節減少腎交感神經活動,此情形可增 加水及鈉自人體之移除且將腎素分泌恢復至更正常位準。曰 當腎血流量之擴張及收縮之穩態位準。 在神經調節程式中,可需要執行圍繞解剖導管之圓周 持續延伸纟360。之圓周脫落以積極影響醫療病況。舉例而 言,在治療心房顫動或其他心律不齊時,可藉由形成圍繞 :靜脈之正橫截面完全連續的圓周病變以破壞異常電信號 來達成圓m在治療心臟衰竭時,可藉由形成圍繞腎 =之正橫截面完全連續的類似連續圓周病變以減少腎交 感神經活動來達成圓周治療。然,,在一些狀況下,可需 6 201242570 要減少血管之結構改變且避免 截面之圓周脫落病變。預期部 落有效地治療多種腎病、心腎 清單之其他疾病,其中相比於 脫落’導管具有較小結構改變 沿血管之單一徑向平面或橫 为圓周、非連續或螺旋狀脫 疾病及包括本文所列之彼等 完全圓周、連續及非螺旋狀 圖1說明神經結構相對於人體内腔或血管結構(典型
地,動脈)之常見解剖配置◊神經纖維N大體上可沿動脈A 之縱長或縱向尺寸L圍繞沿徑向尺寸r之相對小範圍位置而 縱向延伸(常常在該動脈之外臈内進行動脈A具有平滑 肌細胞SMC,平滑肌細胞朦環繞動脈圓周且大體上螺旋 圍繞動脈之角尺寸θ(亦在沿徑向尺寸r之相對小範圍位置 内進行)。因此’動脈A之平滑肌細胞讀具有大體上橫 向於(亦1非平行於)血管之縱長尺寸而延伸之縱長或 較長尺寸。 可藉由經由使用脫落導液管使組織脫落來實現神唑調 節。如本文所利用,術言吾「脫落(ablati〇n)」包括症痕組織 或阻止或破壞神經傳導之病變的產生。在其具體實例中, 凍結溫度或低溫療法可用以熱損害或脫落動脈之目標組織 以達成對目標神經纖維之神經調節。相比於經由射頻能量 而形成之脫落病變,低溫療法典型地利用少得多的電力來 達士神經調節。如上文所描在一些狀況下,部分圓周 ,落(亦# ’圍 '繞導管壁延伸小於360。之脫落)、非連續脫 落或累奴狀脫落可為理想的。為了形成部分圓肖、非連續 或螺旋狀脫落病變,可使低溫療法集中於或強制於待治療 201242570 之組、’我之目‘區’且可保護非目標組織免於脫落(例如, 藉由使用本文所描述之各種裝置及方法使低溫氣球之部分 偏轉或偏移以遠離非目標組織)。 刀 斤現轉向圆2 ’展示部署於動脈A内之脫落總成2〇〇。脫 落〜成200包括用於目標神經纖維之神經調節之低溫氣球 234,及使低溫氣球234在動脈六内偏移之強制元件以。 如將在下文更詳細解釋’在其各種具體實例中強制元件 236可為可徑向膨脹元件,其膨脹成與低溫氣球叫之外部 表面之部分及導管壁之部分中的至少一者接觸,以防止低 :氣球J34接觸導管壁之非目標組織且使該非目標組織脫 落。換s之,強制元件236可使低溫氣球234之表面之部 分偏轉以遠離導管壁之非目標組織或阻止低溫氣球234 L 表面之部分接觸導管壁之非目標組織,以使得低溫氣球… 將接觸導管壁之對應於少於導管壁之全圓周之區段且藉此 執行導管壁之縱向區段之部分圓周脫落。如圖2所示,在 ''體實例中’強制元件236為推開低溫氣球234之部分 或阻止低溫氣球234之部分與導管壁之非目標組織接觸的 第二氣球。動脈A之部分圓周、非連續或螺旋狀脫落可變 更交感神經系統,且可有效地用於治療多種腎、心腎及其 ,疾病,包括(但不限於)高血壓、心臟衰竭、腎病 '腎 衰竭、顯影劑腎病變、心律不齊及心肌梗塞。 圖2A中展示脫落總成2〇〇之脫落圖案或佔據面積的所 得橫戴面。可認為低溫氣球234之外部表面與導管壁之間 的接觸區域為標稱治療區域,纟等於或稍微小於由脫落總 8 201242570 成200引起之脫落圖案,此係因為脫落療法可延伸稍微超 出標稱治療區域之邊界。舉例而言,脫落總成200之標稱 治療區域可圍繞導管壁圓周在45。與225。之間延伸,而脫落 總成200之所得脫落圖案可圍繞導管壁圓周在10。與340。 之間延伸。然而’出於本發明之目的,認為標稱治療區域 及脫落圖案大致相等。標稱治療區域/脫落圖案取決於脫落 總成之接觸表面弧度0及低溫氣球234之工作長度LW(參 見(例如)圖3及圖4之低溫氣球之工作長度lW )兩者而 疋。更特定言之,可藉由將接觸表面弧度之長度L0乘以低 溫氣球234之工作長度LW而計算出標稱治療區域/脫落圖 案。可藉由方程式L0 = r((2a0)/36〇)約略計算接觸表面弧度 之長度,其中R為半徑,且0為接觸表面弧度。如先前所 提及,在其具體實例中,強制元件236可使低溫氣球234 偏轉或偏移而不接觸非目標組織,以使得氣低溫氣球234 之接觸表面弧度0強制或限於導管壁之45。與225。之間。 圖3之側視圖以及圖3A及圖3B之橫截面圖說明第一 具體實例’其具有低溫氣球及用於使低溫氣球偏轉以遠離 非目標組織之第二氣球之脫落總成。更特定言之,雙氣球 導液管306包括在其遠端處之脫㈣成3()()。脫錢成_ 包括第一低溫氣球334及第二強制氣球336,第—低溫氣球 334及第二強制氣球336安置成實質上平行(亦即,並排), 以使得低溫氣球3 3 4 Si % -^ii ^ 與強制軋球336之外部表面或外表面 之至少—部分以其膨脹組態接觸。在圖3中氣球334、336 係以其膨脹或充氣組態展示。僅出於說明性目的氣球 201242570 334、336以及本文所描述之其他雙氣球組態在諸圖中展示 為彼此以其膨脹組態稍微分離。然而,一般熟習此項技術 者應理解,當氣球334、336及本文所描述之所有雙氣球組 態部署於導管中且由如圖2中所展示之導管壁而強制時, 其外表面之至少一部分典型地按壓在彼此上且彼此接觸。 可使用多種合適製造程式來本文所描述之製造氣球334、 336及其他氣球。舉例而言,可使用擠壓、模製或其組合來 製造氣球334、336。此外,可使氣球334、336分離地或一 起形成。在一些具體實例中,當氣球334、336由不同材料 (例如,具有不同柔度之材料)製成時,可同時(例如, 藉由共擠壓)處理該等不同材料。 在圖3、圖3A及圖3B中所展示之具體實例中,雙氣 球導液管306具有沿導線推入(〇ver_the_wire,〇tw )導液 管組態’其中界定導引線⑽322之内部導引線軸件32〇 延伸導液管之實質上整個長度,以容納導引線342。導液管 306包括界定内腔318之管狀組件或外部軸件316。外部軸 :316具有自患者向外延伸且㈣至接頭(㈣)之近 端340及分別輕接至氣球334之近端頸部315及氣球 之近端頸部317之遠端34卜氣球334之遠端頸部319及 球336之遠端頸部321分別耦接至導引線軸件32〇。氣 334之近端頸部315及遠端頸部319以及氣球336之近端 卩 及遠端頸部32 1可以熟習氣球導液管構造技術者 知之任何習知方式(諸如’ #由雷射焊接、黏著劑、熱 化或超音波炫接)而分別接合至外部導液管軸彳316及 10 ⑧ 201242570 引線轴件32G。在—具體實例中,氣ί求334、336形成A雨 個單獨組件,近端顆部315、317之末端接人j成為兩 319, 321 項丨之末鈿接合,且遠端頸部 之末端接合。其他合適製造方法及組態亦有可能。 導弓1線軸件320具有搞接至接帛308之近端(圖中未 :、山在氣球334、336遠端終止之遠端338。接頭308之 =導弓I線口 314與導引線軸件32〇之導引線内腔322流 通。導引線軸件32〇之遠端338可柄接至界定導液管 之、端導引線口之楔形遠端導液管尖端(圖中未示如圖 狂他之°J視圖中所展示,在一具體實例中,導引線軸件320 ^申穿過低溫氣球334。然而,對於一般熟f此項技術者將 顯而易見,可你it "導液g 306使得導引線軸件wo替代地 延伸穿過強制氣披^ 、球36。皁一導引線内腔可簡化導液管構造 魯爾(1Ue〇設計,以及減小導液管306之外徑。另外, 因為氣球334之遠端頸部319及氣球336之遠端頸部321 :者分別叙接至導引線軸件32〇,所以單一導引線内腔導液 構造可幫助在部署期間維持氣球334、336相對於彼此處 於適當位置。 導液管3〇6進一步包括延伸穿過外部軸件316之低溫 供應管324。低溫供應管324界定充氣内腔似(參見圖从 至圖3B),且具有翻;垃 丹有稱接至接頭308之近端(圖中未示)及在 :溫氣球334内終止之遠端325 (見圖3C)e接頭3〇8之低 充氣310與低恤供應管324之充氣内腔326流體連通。 ,溫供應管324在高壓(例如,8〇〇psi)下接收冷象劑(諸 N20液體)且將冷’東劑遞送至低溫氣球334中,以使得 201242570 在冷决劑進入低溫氣球334之内部且膨脹成氣體時存在壓· 降。冷减劑可為在大氣屋力下具有冷於大約1(^之彿點之 任何㈣’諸如(但不限於)Ν2〇液體或c〇2液體。在冷 凌劑之相變期間,因為廢縮氣體之膨膜為吸收呈熱形式之 能量且因此引起環境之冷卻之吸熱程式,所以發生冷卻效 應因此0為低溫劑膨脹成氣體,所以低溫氣球334膨 脹或充氣且低溫氣球之外部表面冷卻至可操作以使組織脫 落或熱損害組織之低溫溫度。低溫氣# 334之溫度可介於 大約-5 C與-12GC之間’此情形可引起定位成鄰近於低溫氣 球334之神經纖維之調節。如由一般熟習氣球導液管設計 技術者將理解,接頭308可提供魯爾(luer)接頭或可連接 至充氣流體源且可在不脫離本技術之料的情況下具有另 構造或組態的其他類型之配件。 導液管306亦包括延伸穿過外部軸件316之強制供應 管328。強制供應管328界定充氣内腔33〇,且具有耦接至 接頭308之近端(圖中未示)及在強制氣球336内終止之 遠端327 (參見圖3C)。接頭308之充氣口 312與強制供應 管328之充氣内腔330流體連通。強制供應管328接收充 氣介質(諸如,鹽水或空氣)且將充氣介質遞送至強制氣 球336中。一旦充氣,強制氣球336即防止低溫氣球334 之外表面之部分與導管壁之非目標組織接觸。更特定古 之’強制氣球336膨脹以推開低溫氣球334之外表面之部 分或使其偏轉而不接觸導管壁之非目標組織。可藉此防止 非目標組織與低溫氣球334之低溫冷卻之外部表面接觸戍 12 201242570 保護非目標組織不受低溫氣球3 3 4之低溫冷卻之外部表面 影響’且因此,強制氣球336可防止導管壁之完整連續圓 周脫落。 除使低溫氣球3 3 4偏移以外,在一具 氣球336亦用以緩和低溫療法之溫度。舉例而言,當n2〇 液體用作低溫劑時’低溫劑至氣體之相變可導致低溫氣球 溫度在-70 C至-8(TC之範圍中。然而,可在介於_1〇〇c與_4〇 t之間的溫度下實現神經調節,且在某些應用中可偏好此 等較高溫度以最小化對導管之不必要損害。因為低溫氣球 334及強制氣球336在治療期間在動脈内部署及相對於彼此 而膨脹所以可在該兩者之間發生熱傳遞。因此,強制氣 球3 36内之充氣流體(諸如,水或鹽水)可凍結。然而, 所得溫度之降低將不會達到將發生熱損傷之程度。大體上 在低於-5。。之溫度下發生熱損傷或神經調節,而凍結強制氣 球336可具有處於或高於·3。。之溫度。顯著地,自強制氣球 336至低溫氣球334之熱傳遞可有益於將低溫冷卻之氣球外 表面之溫度自(例如)只〇 〇Ρ J刘)·80 C增加至用於脫落之較佳溫度, 例如,介於-1(TC與-40Γ少PR m , 0 C之間。因此,氣球之間的熱傳遞可 幫助緩和低溫療法之溫度。 且興眘”體實例中’使氣球334、336同時充氣。在另一 具體實例中,使強制翕社q κ ώ 广 礼球336及低溫氣球334順序地充氣。 可在低’胍氣球334之前估故止,产 — 制氣球336充氣,以便在動脈 内適s疋位及/或定向氣球。 導液管306之多個導液營 π饮官釉件(例如,外部軸件3 16、 η 201242570 導引線軸件320、低溫供應管324及強制供應管似)可由 聚合材料(其非詳盡實例包括聚乙稀、聚乙婦嵌段酿胺共 聚物(PEBA )、聚醯胺及’或其組合)形成,其可根據另一 «適方法而層壓、摻合、共擠壓或處理。在—具體實例中, 導引線轴件320可為聚合材料之可棱性管,諸如聚乙稀管。 視情况’外部軸件316或其某部分可形成為具有併入聚合 本體内以便增強強度及/或可撓性的加強材料之複合物。合 適的加強層可包括編織物、金屬絲網層、嵌入式軸件向導 線、嵌入式螺旋狀或圓周導線,及其類似者。在一具體實 例中’例如,外部轴件3 16之至少近端部分可由加強聚合 管形成H儘管導液管在本文被描述為建構有延 伸穿過其以形成導液管之内腔的各種軸件,但一般熟習此 項技術者將理解,其他類型之導液管構造亦係可能的,諸 如(而不限於)藉由多内腔側面擠壓而形成之導液管軸件。 在另一具體實例中,可在不脫離本技術之範疇的情況下將 導液管306修改為快速交換(RX)導液管組態,以使得導 引線軸件320僅在導液管306之遠端部分内延伸。 儘管低溫氣球及強制氣球被展示為具有大致相等之膨 脹剖面’但低溫氣球及強制氣球可取決於所要脫落療法圖 案而具有不同、不相等尺寸。舉例而言,如圖4之具體實 例中所展示’脫落總成400可包括長度短於強制氣球436 之長度的低溫氣球434。如上文更詳細描述,標稱治療區域 /脫落圖案可取決於低溫氣球之工作長度LW。因此,一般而 言’較短低溫氣球434相比於低溫氣球334在導管壁之縱 201242570 向方向上接觸較少組織,且因 標稱治療區域。另外,與可引 較長低溫氣球相對照,較短低 時間以便達成神經調節。 此導致比低溫氣球334小的 起較深及/或較長脫落圖案之 溫氣球434可需要較長治療 在另實例中,低溫氣球及強制氣球可具有不同膨脹 外径。在圖5之具體實例中,脫m 可包括具有比 強制氣球536之膨脹外徑小的膨脹外徑之低溫氣球别。為 了達成不同膨脹外徑’氣球可由具有不同柔度之材料形 成。舉例而言,可將擴張氣球分類為柔性的、非柔性的或 半柔性的。柔性氣球可藉由其回應於增加充氣壓力而徑向 膨脹超出其標稱直徑之能力來特性化。可據稱此等氣球遵 循藉由繪製氣球直徑對充氣壓力而獲得之應力-應變曲線。 非柔性氣球可藉由接近平直之應力-應變曲線來特性化,該 曲線說明氣球直徑在可用充氣壓力範圍中膨脹相對較少。 為了達成較小膨脹外徑’低溫氣球534可為半柔性或非柔 性的。在一些具體實例中’低溫氣球534可為10%或小於 柔性的且由PEBAX聚合物或对論形成β強制氣球536 之柔性可(例如)介於50%與1 〇〇%之間且由聚胺甲酸酯或 聚石夕氧形成。百分比柔度可對應於在操作壓力下之低溫氣 球534與在額定壓力(例如,破裂壓力或最大充氣壓力) 下之低溫氣球534之間發生的膨脹百分比。所敍述之百分 比柔度值亦可應用於可分配性,可將其計算如下: 可分配性= 在選定壓力下之氣球直徑 氣球之標稱直徑
xlOO% 15 201242570 選定壓力可為相對高的任意壓力(例如,ι〇巴)。可用 以達成氣球之所要量之柔度的合適材料⑽(但不限於) 聚合物’諸如聚乙稀、$乙烯嵌段酿胺共聚物(peba)、 PEBAX3"合物、財綸、聚石夕氧、聚對苯二甲酸伸乙醋(PET)、 聚醯胺、聚胺甲酸酯,及共聚物或其摻合物。 如圖5A巾所展示,在動脈八内之部署期間,具有較大 膨脹外徑之強制氣# 536可本f上環繞或捲繞較小低溫氣 球534,藉此防止導管壁之較大圓周部分之脫落。換言之, 強制氣求536可捲繞較小低溫氣球534,且有效地減小標稱 …療區域/脫落圖案之接觸表面弧度0。低溫氣球534之膨 脹直徑判定接觸表面弧度0,且因此判定低溫脫落之圓周組 織之量 般而s,較小低溫氣球534接觸圍繞導管壁之 圓周之較少組織,且因此導致比低溫氣球别之標稱治療 區域/脫落圖案小的標稱治療區域/脫落圖案。在^ Μ中所 也纷之具體實例中,接觸表面弧度0小於導管壁之圆周的 -半’或介於導管壁之45。與18〇。之間。在另一具體實例(圖 中未示)巾,若需要使導管壁之圆周的一半以上脫落,則 低溫氣球可具有介於導管壁(刚。與225。之間的接觸表面 ^度0’且可經建構成具有比強制氣球大的膨脹外徑,以使 仔較大低溫氣球在部署期間環繞較小強制氣球。 返回參看圓3以及圖3B、圖3C及圖3D之剖視圖,描 述導液管306之另-特徵。在圖3之具體實例中,可使強 制氣球336充氣且取決於強制氣球336之設計而使其保持 處於恆定壓力或處於恆定外徑,且強制氣球336之内部不 201242570 與卜P轴件316之内腔318流體連通。如分別在氣球334 ^氣球頸部315與氣球336之氣球頸部317之間的近端結 合件329之位置處所獲得的圖3B之橫截面圖中所展示,近 端結合件329環繞強制供應管328且密封強制供應管328 使其不與外部軸件316之内腔318連通。在近端結合件329 之部位處,外部軸件316自圖3A之環形組態變換成類似於 氣球頸部315、317之大體上數字「8」組態,在一具體實 例中4目比於強制氣球3 3 6之近端氣球頸部3 ! 7,低溫氣球 之近端氣球頸部315具有較大直徑及對應内腔,以便允 許膨脹低溫氣體或排氣自低溫氣球334之内部離開,如將 在本文更詳細解釋。儘管近端氣球頸部3丨5可能大於近端 氣球頸部317,但氣球334、336之膨脹外徑可相同或如上 文所描述不同。近端結合件329可以此項技術中已知之任 何δ適方式形成,包括經由黏著劑及/或熱熔絲而形成。 與強制供應管328相對比,低溫供應管324及導引線 軸件320自由地延伸穿過(例如,不結合至)外部軸件3 1 6, 且延伸至低溫氣球334之氣球頸部3 15中❶如上文所提及 且參看圖3C,連續供應之低溫流體離開低溫供應管324之 遠端325而至低溫氣球334之内部中以在其中膨脹。同時, 膨脹低溫氣體在近端經由軸件324、320與外部軸件3 16之 間的空間離開低溫氣球334之内部,如圖3C中最佳展示。 在-具體實例中’ λ空可用以自導液管中抽出膨脹低溫氣 體,但不需要真空來使氣體離開。膨脹低溫氣體在近端行 進穿過近端氣球頸部315且在外部軸件316之内腔318内 17 201242570 行進達導液管306之長度,且接著經由接頭_之臂309 離開導液管306。如圖3D之橫戴面圖中所展示,低溫療法 軸件324自由地延伸穿過(例如,不結合至)臂3()9,且因 此膨脹低溫氣體可經由在低溫療法料似與臂3〇9之間 所界定的環形内腔或空間311而逸出。在另—具體實例(圖 中未示)中’低溫療法軸件324彳結合或以其他方式麵接 至外部軸件3 16之一側壁。 圖6說明其另-具體實例,其令可使用於強制氣球之 充氣流體循環以便更佳地控制其溫度。更特定言之,脫落 總成600包括低溫氣球634及強制氣球_。低溫供應管 624及導引線軸件620延伸穿過外部軸件616且延伸至低溫 氣球634《近端1球頸冑615巾,如上文關於導液管3〇: 所描述。然而,在此具體實例中,強制供應管628以及充 氣流體返回或排氣軸件650延伸穿過外部軸件616且經由 強制氣球636之近端氣球頸部617而延伸至強制氣球636 之内部中。近端結合件629環繞軸件628、65〇,且密封強 制氣球636之内部使其不與外部軸件616之内腔618連通。 連續供應之充氣流體經由強制供應管628進入強制氣球636 之内部以使強制氣球636充氣及膨脹。充氣流體接著經由 排氣軸件650離開強制氣球636之内部’以使得強制氣球 636内之充氣流體可持續迴圈。連續迴圈允許強制氣球636 之内。p内之充氣流體維持在較暖溫度下,此情形改良強制 氣球636保護非目標組織免於脫落之能力,此係因為防止 了強制氣球636歸因於與低溫氣球634之熱傳遞而冷卻至 201242570 低溫脫落溫度。歸因於充氣流體之連續迴圈而在強制氣球 :36中所維持的相冑較暖溫度亦准許自強制氣球㈣至低溫 軋球634之熱傳遞改良,從而更佳地緩和如本文所描述之 低溫療法之溫度。 各圖7說明其另一具體實例,其中來自低溫氣球之排氣 充田用於強制氣球之充氣流體,以便簡化導液管之構造且 減少所需内腔數目,此情形亦可減小導液管之外徑。更特 定。之,脫落總成700可包括低溫氣球734及強制氣球 736。低溫供應管724及導引線軸件72〇延伸穿過外部轴件 71 6且延伸至低溫氣球734之近端氣球頸部7丨5中,如上文 關於導液f 306所描 <。然而’纟此具體實射,U形連接 器752使低溫氣球734之内部與強制氣球736之内部流體 連接將低溫劑遞送至低溫氣球7 3 4中,且當低溫劑進入 低1氣球734之内部且膨脹成氣體時存在壓降。隨著低溫 劑膨脹成氣體,低溫氣球734膨脹且排氣行進穿過口形連 接器752且行進至強制氣球736中以使強制氣球膨脹。儘 管低溫氣球734之溫度使與低溫氣球734接觸之目標組織 脫落,但離開低溫氣球734且填充強制氣球736之排氣可 比低溫氣球734之溫度暖大約2〇至50 Ό *因此,儘管排 乳仍為冷的’但強制氣球736之溫度可保持高於-5 "C,以使 知將不發生鄰近於強制氣球736之非目標組織之熱損傷》 在一具體實例(圖中未示)中,U形連接器752之長度可增 加成使得遠端迴路在遠端進一步延伸至血流中,該血流用 以在排氟進入強制氣球7 3 6之内部之前另外暖化排氣。排 19 201242570 氣繼續流經強制氣球736之近端頸部71 7 0 0 . 迎端結合件 且以與上文關於圖3D所描述之方式相同的方一< 接頭之未密封臂在近端離開導液管。 $ ’左由 在其另一具體實例中,導液管可包括兩個單獨導 内腔以用於脫落總成之更受控制定位。兩個單獨導引線内 腔亦允許利用兩個不同類型之導引線以用於導液管之置 放。舉例而言,軟尖端導引線及硬尖端導引線兩者可 推進導液管通過繚繞解剖。儘管僅需要—導引線以定位導 液管’但兩個導引線處於適當位置且可在需要時予以利 用。舉例而言,如圖8、圖8A及圖8B中所展示 =液管_包括在其遠端處之脫_成8(^脫落總成_ :括低溫氣球834及安置成鄰近於(亦即,並排於)低溫 氣球834之強制氣_ 836。低溫供應管824及導引線轴: 820A以上文關於導液管3〇6所描 义乏万式延伸穿過外部軸 件816且延伸至低溫氣球㈣之近端氣球_ 815中 部轴件816界定穿過其之内腔818。 導引線軸件嶋界定用於收納導弓丨線M2A之導引線 内腔822A。然而,在此具體實例中 貝J Τ除了界定充氣内腔830 之強制供應管828以外,第二内部導引線轴件讀亦延伸 穿過強制氣球836。導引線軸件嶋界定實質上延伸導液 管之整個長度以容納第二導引線842B之導引線内腔 隨。外部轴件816具有自患者向外延伸且叙接至接頭謂 之近端_,及分別耦接至氣球834之近端頸部⑴及氣球 8 3 6之近端f員部§ 1 7 $ ;賫# 〇 a 1 遠鸲84h氣球834之遠端819及氣 201242570 球836之遠端821分別耦接至導引線軸件82〇a、“OB ^導 引線轴件820 A、820Β具有耦接至接頭808之近端(圖中未 示)及在氣球834、836遠端終止之遠端《接頭808包括與 導引線軸件820A之導引線内腔822A流體連通之導引線口 814A ’及與導引線軸件82〇B之導引線内腔822b流體連通 之導引線口 814B。另外,接頭808包括與強制供應管828 之充氣内腔830流體連通之第一充氣口 812,及與低溫供應 管824之充氣内腔826流體連通之第二充氣口 8ι〇。類似於 上文所描述之近端結合件329 ,近端結合件829環繞氣球 834之内部且密封氣球834之内部使其不與外部軸件8 μ之 内腔818連通。在近端結合件829之部位處’外部軸件816 自圖8A之環形組態變換成類似於氣球頸部8丨5、8丨7之大 體上數字「8」組態。 圖9、圖9A及圖9B說明其另一具體實例,其中導液 2可包括兩個單獨導引線内腔以用於脫落總成之更受控制 疋位。在此具體實例中,兩個個別氣球導液管906A、906B 經由輕接器套筒_麵接在—起。脫落總《刚形成於氣 球導液官906A、906B之遠端處,其中低溫氣球934安置於 氣球導液管906A之遠端處且強制氣球936安置於氣球導液 管9〇6B之遠端處。第-氣球導液管906A包括界定内腔 91=之外部軸件916A。界定内腔926之低溫供應管似及 界疋用於收納導引線942A之導引線内腔922A之導引線轴 件9胤兩者延伸穿過外部軸件—A。用低溫劑使安置於 導液g 906A之遠端處之低溫氣球934充氣,如上文關於低 21 201242570 溫氣球334所描述。第二氣球導液管·包括外部轴件 9⑽及界定用於收納導引線9伽之導引線内腔咖之内 部導引線軸件920卜在第二氣球導液管觸之同軸導液 管構造中’導引線轴件92GB在外部軸件9ΐ6Β内延伸,以 使得環形充氣内腔918Β界定於外部軸件91紐之内表面與 導引線軸件9則之外表面之間。經由遞送通過環形充氣内 之充氣流體使安置於導液管刪之遠端處之強制 乳球936充氣。第-接頭靖Α耦接至第—氣球導液管 906A,第二接頭9〇8B耦接至第二氣球導液管9嶋。接 頭_A、908B包括分別與導引線軸件92〇a之導引線内腔 922A及導引線軸件92〇B之導引線内腔922b流體連通之導 引線口 914A、914B,及分別與低溫供應管924之充氣内腔 926及外部軸件916Β之充氣内腔9l8B流體連通之充氣口 91〇、912。在此具體實例中,具有兩個單獨氣球導液管可 2化每一導液管與其各別氣球之間的結合區域,此係因為 母一外部軸件結合至單一近端氣球頸部而非兩個分又接近 端氣球頸部(如關於上文所描述之具體實例所描述)。 耦接器套筒960遍及導液管916Α、916Β之部分而延伸 以將兩者耦接在一起,且將氣球934、936適當定位成在目 標動脈内並行。在一具體實例中,耦接器套筒96〇具有介 於毫米與3〇毫米之間的長度。耦接器套筒96〇可由任 何合適的生物相容性材料形成,包括(但不限於)聚乙烯、 聚乙稀嵌段醯胺共聚物(ΡΕΒΑ)、聚醢胺及/或其組合,該 等材料可根據另一合適方法而層壓、摻合、共擠壓或處理。 22 201242570 耦接器套筒960可呈右in 展 ”圓形或橢圓形橫戴面(如圖9B中所 8」之剖面以減小其剖面。 在具體實例中,輕接器套铕 0 .„ . ^ 套琦960可為可移除式單獨組 且操作者可將單獨氣球導液瞢 λ* 〇_ ^ 导及s 906Α、906Β裝配至耦接器套 筒960中。結果,操作者# 選擇適虽氣球大小或類型以對 治療部位進行最佳治療。皋 ,、舉例而s,操作者可選擇具有且 特定膨脹外徑及/或長度之%生丨名> ^ 制氣球的導液管,以便定製標 解叫“ 案之大小。此定製用於適應患者之個別 解。i。在另一具體實例中, 耦接器套肖960及氣球導液管 9〇6A、906B可形成為單一整合總成。 在圖8及圖9之具贈眘. 、告一去 具體實例中,低溫氣球及強制氣球之 」遠端方向上分離地延伸且不接合在一起。因而,在 中’ 一或多個機構可用以將低溫氣球與強制氣 2接在-起’此情形可防止在部署期間氣球彼此摺養。 破=二,在一具體實例中’低溫氣球834/934與強制氣 球836/936經由黏著劑1〇62 _ 而耗接在一起。在圖11中所展 =-具體實例中,外部勒⑽可用以在部署期間將低 834/934與㈣氣球8_6按並排組態固持成鄰近 於彼此。在一具體實例中, .,^ 卜°卩鞘1164為在低溫氣球及強 球被充氣時膨脹之彈性管狀構件。外部勒1164環繞低 溫氣球及強制氣球,且強制 ^ $ 低皿軋球及強制氣球以使其保 持處於鄰近或並排組態。外 I+. ^ y_ 卜鞘1164係由不影響由低溫氣 衣執行之脫落的實質上非 卜、&緣材枓(啫如,聚胺曱酸酯、 ΡΕΒΑΧ聚合物或聚矽氧) 乳/> I成在另一具體實例中,外部 23 201242570 鞘1164無彈性。在又一具體實例中,外部鞘ιΐ64可包人一 或多個環形…圖中未示)而非覆蓋低溫氣球及強:氣 球之至少一部分的連續管狀構件。 在又-具體實例中,外部勒1164可在其遠端處封閉, 以便形成外部可充氣氣球,外部们164環繞並強制低溫氣 球834/934及強制氣;求836/936。除了將低溫氣球^物μ 及強制氣球836/936保持處於鄰近並排組態或大體並行组 態以外,外部勒H64亦可在被充氣以與導管壁相抵時堵塞 血流。因為通過低溫氣球之血流可影響所要脫落療法圖 案’所以可需要堵塞血流。 在其另-具體實例中,脫落總成包括用於使低溫氣球 偏轉以遠離導管内之非目標組織之—或多個又指。更特定 言之’圖12為部署有脫落總成12〇〇之動脈a的部分示意 性橫截面圖。脫落總成1200包括用於使經織脫落之低溫氣 球1234及將低溫氣球1234定位於動脈内之強制元件 1236。在此具體實例中,強制元件1236為使低溫氣球aw 相抵於導管壁之接觸偏轉或偏移的—對自膨脹又指。 ,圖13為用於遞送自膨脹叉指之導液管系統之實例的側 視圖,自膨脹又指使低溫氣球偏轉以遠離導管壁之非目標 組織。更特定言之,氣球導液管13G6包括界定内腔(圖中 未示)之外部軸件1316,及界定用於收納導引線1342之導 引線内腔(圖中未示)之内部導引線轴件^⑽。在氣球導 液管1306之導液管構造中,類似於低溫供應管324之低溫 充氣軸件(圖13巾未展示)延伸穿過導液f 13〇6,以用於 24 201242570 接收低溫充氣介質從而使低溫氣球1334充氣。用低溫劑使 低溫氣球1334充氣(如上文關於低溫氣球334所描述), 且膨脹低溫氣體或排氣經由界定於外部軸件1 3 1 6之内表面 與導引線軸件1 3 2 0及低溫充氣軸件之外表面之間的空間而 離開導液管1306。接頭1308安置於導液管13〇6之近端處。 接頭13 08包括與低溫充氣軸件之充氣内腔流體連通之充氣 口 1310 ’及與内部導引線軸件132〇之導引線内腔流體連通 之導引線口 1314。脫落總成1300包括安置於導液管丨3〇6 之遠鈿處之低溫氣球1334及一對自膨脹又指1372Α、 1372Β。圖13中及下文所描述的圖"A、圖13Β及圖14中 僅展示又指1372Α、1372Β中之一者。 如圖13Α中所展示,管狀鞘137〇安置於導液管13〇6 上方(圖13),且將該對自膨脹又指U72A、U72B強制成 適於在脈管結構内遞送之減小之直徑。又指1 372a、1 372Β 耦接至推拉式導線1378 (圖13),推拉式導線1378自導液 管1306在近端向外延伸且可由操作者操控◊推拉式導線 1378用於在鞘1370内在遠端推進及在遠端縮回叉指 1372A、1372B。當在遠端自鞘137〇向外推進時,叉指 1372A、1372B部署成圖13、圖13B、圖13C、圖14及圖 15中所展示之膨脹組態。出於清楚之目的,分別自圖14之 側視圖及圖15之仰視圖/俯視圖省略低溫氣球1334。藉由 又指1372A、1372B將低溫氣球1334推動至導管之一側, 叉指13 72 A、13 72B按壓在動脈之相對側上以導致部分圓周 脫落圖案。低溫氣球1334係由非柔性或低柔性材料形成, 25 201242570 以防止其在叉指1372A、1372B之間膨脹且膨脹至導管壁 上。舉例而言,低溫氣球1334可由耐綸、PEBAX聚合物或 聚對苯二甲酸伸乙酯(PET )形成。 參看圖14及圖15,每一叉指1372A、1372B包括近端 片段1376A、1376B、彎曲片段1374A、1374B,及遠端片 段1380A、1380B。在一具體實例中,每一又指1372A、1372B 為由單一或整合材料片形成之整體結構。在另一具體實例 中,每一叉指之彎曲片段1374A、1374B為可為相同材料或 不同材料之單獨元件,該元件藉由此項技術中已知之諸如 以下方式的任何合適方式附接至近端片段及遠端片段:包 括電阻焊接、摩擦焊接、雷射焊接或另一形式之焊接的焊 接、熔焊、使用黏著劑、將連接元件添加於近端片段與遠 端片段之間,或藉由另一機械方法。又指1 372A、1372B可 由諸如鎳鈦諾導線之形狀記憶體材料形成,且可自膨脹。 錦欽諾導線可為實心或中空的,且可具有圓形、橢圓形、 正方形、矩形或任何其他合適的橫截面形狀。 在遞送期間,每一叉指1372A、1372B被強制成在鞘 〇内之貫質上筆直的組態,且當每一又指1372A、1372B 自勒137G釋放時’每—叉指m2A、1372b採取將氣球之
::表面按壓在相對導管壁上之其預成型形狀或已部署組 〜、更特定s之,在已部署組態中,近端片段1376A、1376B 為自推拉式導線1378在遠端延伸之相對短且實質上筆直的 片段。如圓15之仰視圖中所展示,近端片段i376A、i376B 對徑向方向上發散以將叉指1372a、BUB置於低溫氣 26 201242570 球1334之相對側上。如圖14之側視圖中所展示,近端片 段1376A、1376B在平行於導管之縱向軸線之平面内延伸。 彎曲片段1374A、1374B在遠端自近端片段1376A、U76B 延伸’且在徑向方向上朝向導管壁彎曲。彎曲片段UNA、 1 374B操作以接觸及推壓低溫氣球i334之近端部分,從而 使低溫氣球1334之部分偏轉以遠離導管壁。大體上筆直之 遠端片段1380A、1 380B在平行於導管之縱向軸線之方向上 在遠端地自彎曲片段1374A、1374B延伸。遠端片段138〇八、 1 380B將叉指1372A、1372B按壓及/或留置(1〇dge)在導 管之一側上’而低溫氣球1334按壓在導管之相對側上。 在其他具體實例中’可使用使低溫氣球1334偏轉以遠 離導管壁之非目標組織的自膨脹叉指之不同組態。舉例而 言’圖16展示具有經由V形接合片段1682而連接之遠端 的叉指1672A、1672B’且圖17展示具有用修圓u形接合 片段1782而連接之遠端的又指1772A、1772B。接合片段 1682、1782可整合地形成於兩個又指之間,或可為耦接至 兩個叉指之單獨組件。連接叉指之遠端可本質上形成穩定 性改良的用於使低溫氣球偏轉之單一叉指。圖1 8中之叉指 1 872A、1872B類似於又指1672A、1672B,但亦包括在其 間延伸以用於使偏轉叉指穩定及/或加強之對角支撐片段 1 8 84。最後,一般熟習此項技術者將理解,替代部署機構 可用於部署偏轉叉指。舉例而言,參看圖19,每一叉指 1972A、1972B可耦接至用於個別地控制每一又指之部署的
單獨推拉式導線1978A、1978B。每一叉指1972A、1972B
27 201242570 之單獨部署提供對被偏轉以遠離導管壁之低溫氣球之量的 選擇性控制,I因此提供對脫落療法圖案的選擇性控制。 舉例而言,可僅部署又㈣72A、1972B中之一者以較少地 強制低溫氣球,且因此圍繞導管之圓周之較大部分發生脫 落’而可部署兩個叉指1972A、1972B以用於更多地強制低 溫氣球,且因此圍繞導管之圓周之較少部分發生脫落。在 另一具體實财,如_般熟習此項技術者將理解,可藉由 鞘1370之縮回而實現及/或輔助自膨脹又指之部署。 因為通過低溫氣球之血流可影響所要脫落療法圖案, 所以本文所描述之任何具體實例可包括堵塞氣球或其他堵 塞器件。可圍繞如關於圖"之外部鞘所描述之脫落總成而 同心地置放堵塞器件’或可將堵塞器件置於脫落總成之近 端或遠端。另夕卜’堵塞器件可整合地形成於脫落總成之遞 送導液管上’或可為供脫落總成之遞送導液管利用之單獨 器件。 本文關於導管壁之部分圓周脫落來描述一些具體實 例二然而,在一些應用中,可能需要執行導管壁之全圓周 脫洛’其亦為非連續或螺旋狀的。非連續之全圓周脫落可 包括形成圍繞導管壁之整個圓周共同延伸的兩個或兩個以 上部:圓周脫落。螺旋狀、纟圓周脫落可包括形成-或多 個脫落,該一或多個脫落彎曲以圍繞導管壁之整個圓周延 伸,而在垂直於導管之任何單一平面中不為全圓周脫落。 相比於其他全圓周脫落’此等全圓周脫落之非連續或螺旋 狀性質可減少對導管之任—區之結構改變…般熟習此項 201242570 技術者將理解,其用於產生 刀圓周脫洛圖案之具體實例 亦可用於產生非連續或螺旋 體實例 士 疋狀王圓周脫洛圖案。舉例而 CT,/、有本文所描述之脫落_ # β Μ + # 贶洛總成之導液管可在導營内縱— 平移且在需要時旋轉,以#抽— ’ 〇 執行圍繞導管壁之整個圓周共 同延伸之多個順序的部分圓 、 1刀圓周脫洛。在一些具體實例中, 長度介於2毫米與5奎半^ 未之間的相對短氣球可在導管 轉及縱向地移動以產生非連 开逆躓及螺旋狀脫落圖案。 實例 ^ 1. 一種低溫療法器件,其包含: 該軸件經組態以將 一伸長軸件’其包括一遠端3部分 該遠端部分定位於一解剖導管中; -第-氣球’其在該遠端部分處; 沿該軸件之至少一部八 4刀的一第一供應内腔; 沿該軸件之至少一邱八 π刀的一第一排氣内腔,該第一排 氣内腔經由該第一顏诂二4 孔球而流體連接至該第一供應内腔; 第一氣球,其在兮、告w Α 、在。亥延端部分處,與該第一供應内腔 及該第一排軋内腔流 ^ 離’該第二氣球經組態以防止該 第一氣球在垂直於該解為丨 + Μ、》、Λ " 解j導S之一長度之大體上任何平面 中低冷卻該解剖導營> 子B之一壁之一全圓周; 沿該軸件之至少—邱八 刀的一第二供應内腔;及 沿該軸件之至少_部八 °丨刀的一第二排氣内腔,該第二排 氣内腔經由該第二氣球 处 么向複體連接至該第二供應内腔。 2. 如實例1之彳氏、、w,虚、Α <低/皿療法器件,其中_ 該第一氣球為非柔性 八 F糸性或+柔性的,且 29 201242570 該第二氣球為柔性的。 3.如實例1之低溫療法器件,其中— 該第一氣球之柔性小於1 0。/〇,且 該第二氣球之柔性介於5〇%與1〇〇%之間。 4.如實例1之低溫療法器件,其中一 該第二氣球包括一近端部分及一遠端部分, 分及該 該第二供應内腔包括在該第二氣球之該近端部 遠端部分中之一者處的一開口,且 氣球之該近端部分及該 該第二排氣内腔包括在該第 遠端部分中之另一者處的一開口 5.如實例1之低溫療法器件其中一 §亥低溫療法器件經組能丨+ 干、怎以在加壓致冷劑經由該第一供 應内腔而遞送至該第一氣球、 ’ 任"哀第軋球中膨脹且經逢 該第-排氣内腔而自該第一氣球排氣時低溫冷卻該解剖導 管之該壁的接近該第一氣球之一部分且 該低溫療法器件經組態以在一熱傳遞流體經由該第- 供應:腔而遞送至該第二氣球、在該第二氣球内移動且經 由該一排氣内腔而自該第二氣球排氣時暖化該第 球。 6. 一種用於治療一患者之方法,其包含 長軸件之一遠端部分定4 將一低溫療法器件之 該患者之一解剖導管内; 將致冷劑遞送至該低溫 ^ 产 席,女器件之在該遠端部分; 一第一氣球; 30 201242570 使該第一氣球内之該致冷劑膨脹以冷卻該第-氣球; 冷卻該解剖導管之-壁的接近該第一氣球之一部分; 及 广使-熱傳遞流體循環通過該低溫療法器件之接近該第 軋球且與該第一氣球流體分離的一第二氣球,以暖化該 第一氣球且緩和該解剖導管之該壁之該部分的該冷卻。 7·如實例6之方法’其中使該熱傳遞流體循環致使該第 一氣球之一溫度介於-1 0 與_4〇之間。 8.如實例6之方法,其進一步包含使該解剖導管之該壁 之介於45。與225。之間的部分與該第一氣球接觸。 9·如實例ό之方法,其進一步包含— 用該致冷劑使違第一氣球半柔性或非柔性地膨脹;及 用該熱傳遞流體使該第二氣球柔性地膨脹。 10. 如實例6之方法,其進一步包含使用該第二氣球以 防止該第一氣球在垂直於該解剖導管之一長度之大體上任 何平面中低溫冷卻該解剖導管之該壁之一全圓周。 11. 一種低溫療法器件,其包含: 一第一導液管,其包括— 一第一伸長軸件’其具有一遠端部分, 一第一氣球’其在該第一軸件之該遠端部分處, 沿該第一軸件之至少一部分的一供應内腔, 沿該第一軸件之至少一部分的一排氣内腔,該排氣内 腔經由該第一氣球而流體連接至該供應内腔; 一第二導液管,其包括一 31 201242570 一第二伸長軸件,其具有一遠端部分,及 一第二氣球,其在該第二軸件之該 一鈕蛀哭太拉 * 定端部分處;及 耦接益套埼,其經組態成在一解 /- ^ m. u., 』等管内且以一半 仃配置收納該第一導液管及該第二導液管。 十 12.如實例1丨之低溫療法器件,其 液管,其中- $纟包含-第三導 該第三導液管包括一 一第三伸長軸件,其具有一遠端部分,及 -第三氣球,其在該第三軸件之該遠端部分處, 該第二氣球及該第三氣球經組態以膨脹至不同大 該第二導液管及該第三導液管相對於該耦接 互換。 13. 如實例U之低溫療法器件,其進一步包含連接至該 叙接器套筒之-可輕外部銷,纟中該[氣球及該第二 氣球經組態以在該第一導液管及該第=導液管處於該耦接 器套筒内時一起裝配於該可膨脹外部鞘内。 14. 如實例1丨之低溫療法器件,其中該低溫療法器件經 組態以在加壓致冷劑經由該第一供應内腔而遞送至該第一 氣球、在該第一氣球中膨脹且經由該第一排氣内腔而自該 第一氣球排氣時低溫冷卻該解刮導管之一壁的接近該第一 氣球之一部分。 15 ·如實例11之低溫療法器件,其中該第二氣球經組態 以防止該第一氣球在垂直於該解剖導管之一長度之大體上 32 201242570 任何平面中低溫冷卻該解剖導管之該壁之一全圓周。 1 6·如實例1丨之低溫療法器件,其中— 該第-導液管包括沿該第一軸件之至少一部分且延伸 穿過該第一氣球的一第一導引線内腔,且 穿過::一導液管包括沿該第二軸件之至少一部分且延伸 穿過該第二氣球的一第二導引線内腔。 1 7· —種用於治療一患者之方法,其包含: 將一第一導液管之-第一伸長軸件之一遠端部分定位 於該患者之一解剖導管内; 將致冷劑遞送至該第一導液管之在該 端部分處的一第一氣球; 件之該遠 使該第-氣球内之該致冷劑膨服以冷卻該第 冷部該解剖導管之一壁的接近該第一氣球之八. 基於該解剖導管之-大小及-第二導液管之二二 球之-大小而自複數個導液管選擇該第二導液管.-軋 將該第4液管之一第二㈣轴件之 i 於該解:ii導管内接近該第—伸長轴件之該第—遠蠕 =位 該第-乳料在該第二伸長軸件之該遠端部分處°刀’ 使》亥第—氣球在該第一氣球與該解剖導 膨脹,以防止該第一氣球在垂直於該解该壁之間 大體上任何平面中低溫冷卻該解剖導管之^長度之 周。 Μ笼之-全圓 is·如實例17之方法’其中定位該第 分與定位該第二軸件之該遠端部分係大體該遠端部 u吁進行。 33 201242570 19. 如實例17之方法 與夕铋紅社一μ 具進—步包含在選擇該第二導液 &之後麵接該第一導液答 守戍管與該第二導液管。 20. 如實例19之方法,1 士 ± 法其中耦接該第一導液管與該第二 , 導液管及該第二導液管引入至一耦接 器套筒t。 21·—種低溫療法器件,其包含: 該軸件經組態以將 ▲ 一伸長軸件,其包括一遠端部分 該遠端部分定位於一解剖導管中; 一伸長氣球,其在該遠端部分處; 沿該軸件之至少一部分的一供應内腔; 沿該轴件之至少一部分的一排氣内腔,該排氣内㈣ 由該氣球而流體連接至該供應内腔;及 一伸長自膨脹叉指,其在該遠端部分處, 其中一 該氣球經組態以優先膨脹以遠離該又指,且 該又指經組態以防止該氣球在垂直於該解剖導管之 長度之大體上任何平面中低溫冷卻該解剖導管之— 全圓周。 < 其中該氣球為非柔性或 其中該氣球之柔性小於 22.如實例2 1之低溫療法器件 半柔性的。 23 ·如實例2 1之低溫療法器件, 10%。 24.如實例2 1之低溫療法器件,其中 s亥又指為一第一又指, 34 201242570 該低溫療法器件進一步包含一第二叉指,且 遠第一又指與該第二又指可獨立地部署或可部署在一 起以改變該解剖導管之藉由該氣球低溫冷卻的一部分之大 25. 如實例21之低溫療法器件,其中一 该又指為一第一又指, 該低溫療法器件進一步包含一第二叉指,且 該第一又指與該第二叉指在近端連接至一推拉式導 線。 26. 如實例25之低溫療法器件,其中— 該第一又指與該第二又指在遠端連接,且 該低溫療法器件進一步包含在該第一叉指與該第二叉 指之間的一對角支撐件。 27· 一種用於治療一患者之方法,其包含: 將一導液管之一伸長軸件之一遠端部 之一解剖導管内; 遠端部分定位於該患者 伸長又指按壓在該解剖 在該軸件之該遠端部分處將一伸長又 導管之一壁之一第一部分上, 之該遠端部分處 遠離該叉指之— 將致冷劑€送至料液管之在該軸件之 的-氣球以冷卻該氣球且優先使職球在遠
35 201242570 28·如實例27之方法,其中該解 部分及該第。導e之該壁的該第一 處。 分處於該解剖導管之該壁之大體上相對側 2 9 ·如 f | , 之方法’其中將致冷劑遞 氣球非柔性或半柔性地膨脹。«送至“球使该 以控二其進-步包含控制該叉指之偏轉 U導管之該壁之該第二部分的大小。 八虚.s實例27之方法’其進一步包含該軸件之該遠端部 刀:擇數個伸長叉指以按壓在該解剖導管之該 =分上,從而控制該解剖導管之該壁之該第二部分的; 大小0 結論 雖然上文已描述根據本技術之各種具體實例,但應理 解’該等具體實例僅藉由說明及實例來呈現,且並非用來 限制對於熟翫相關技術者將顯而易見,可在不脫離本發 明之精神及範相情況下在本發明中進行形式及細節之各 種改變。因此’本發明之廣度及範疇不應藉由上述具體實 例令之任-者限制。亦將理解,可結合任何其他具體實例 之特徵使用本文所淪述之每一具體實例之每一特徵及本文 所引用之每一參考之每一特徵。纟文所論述之所有專利及 公開案之全文以引用的方式併入本文中。 在上下文准許時,單數項或複數項亦可分別包括複數 項或單數項。此外,除非詞「或」明確地限於僅意謂參考 兩個或兩個以上專案清單之單一專案而排除其他專案,否 36 201242570 則在此清單中「或」之使用將解釋為包括(a)該清單中之 任何單—專案、⑴該清單中之所有專案,或⑺該清單 中之專案之任何組合。另外,術肖「包含」及其類似者貫 穿本發明用以意謂包括至少所敍述特徵,以使得不排除任 何較大數目個相同特徵及/或額外類型之其他特徵。亦將瞭 解,可在不偏離本技術的情況下對所描述之具體實例作出 各種修改。另夕卜雖然與本技術之某些具體實例相關聯之 優點已在彼等具體實例之上下文中予以描述,但其他具體 實例亦可展現此等優點,且並非所有具體實例皆必需展現 此等優點而使其屬於本技術之範疇。因此,揭示内容及相 關聯之技術可涵蓋本文中未明確展示或描述的其他具體實 例〇 【圖式簡單說明】 圖1為接近動脈之神經纖維之共同位置的部分示意性 等角詳細視圖。 圖2為部署有脫落總成之動脈的部分示意性橫截面 圖’其中脫落總成包括低溫氣球及可將低溫氣球定位於動 脈内之強制元件。 圖2A為在用圖2之脫㈣、成治療後動脈内之脫落療法 圖案的部分示意性說明。 圖3為在遠端處具有脫落總氣球導液管的側視 圖,其中雙氣球導液管包括單一導引線内腔。 圖3A為沿圖3之線A_A截得的橫截面圖。 37 201242570 圖3B為沿圓3之線B_B截得的橫截面圖。 圖3C為沿圖3之線c_c截得的剖視圖。 圖犯為沿圖3之線D_Dm得的橫截面圖。 圖4為根據其另一具體實例的圖3之脫落總成之雙 球組態的側視圖。 ' 圖5為根據其另一具體實例的圖3之脫落總成之雙氣 球組態的側視圖。 圖5A為部署有圖5之脫落總成之動脈的部分示意性橫 截面圖。 圖6為根據其另一具體實例的沿圖3之線c_c截得的 視圖’其中導液管進—步包括用於使脫落總成之強制元 件内之暖充氣流體循環之充氣流體返回軸件。 圖7為根據其另一具體實例的沿圖3之線cc截得的 視圖丨中導液f利用低溫療法之排氣以使脫落總成之 強制元件充氣。 圖8為根據其另一具體實例的在遠端處具有脫落總成 之雙氣球導液管的側視圖,其中雙氣球導液管包括兩個單 獨導引線内腔。 圖8A為沿圖8之線A-A截得的橫截面圖。 圆8B為沿圖8之線B_B截得的橫截面圓。 圖9為根據其另一具體實例的在遠端處具有脫落總成 之導液管總成的側視圖,其中導液管總成包括兩個氣球導 液管。 圖9A為沿圖9之線A-A截得的橫截面圖。 38 201242570 圖9B為沿圖9之線B_B截得的橫截面圖。 圖1 〇為圖8或圖9之遠端部分的側視圖,其中兩個氣 球係經由黏著劑而接合。 圖11為® 8或ϋ 9之遠端部分的側視圖,其中兩個氣 球定位於外部勒内。 圖12為根據本發明之另—具體實例的部署有脫落總成 之動脈的部分示意性橫截面圖’纟中該脫落總成包括低溫 氣球及將低溫氣球定位於動脈内之強制元件。 圖Β為根據其另—具體實例的在遠端處具有脫落總成 之導液管的側視圖,其中該脫落總成包括低溫氣球及用於 ,低皿乱球之至少一部分偏轉遠離導管壁之一對自膨脹叉 指0 圖Α為圖13之導液官之遠端部分的側視圖,其中低 溫氣球呈膨脹或充氣組態,且又指係強制在顆内。' · 圖13Β為圖13之導液管之遠端部分的側視圖,其中低 溫氣球呈膨脹或充氣組態,且又指係自勒而釋放。 說明==部署於^内之圖13之導液管之遠端部分的 。月性透視圖,其中低溫氣球呈膨 係自鞘釋放。 〜且又心 、圖14為圖13之又指的側視圖,其中出於清楚之目的 已省略低溫氣球,且叉指呈膨脹或部署組態。 /15為圖13之叉指的仰視圖其中出於清楚之目的 省略低溫氣球,且叉指呈膨脹或部署組態。 圖16為用於使低溫氣球之至少~部分偏轉遠離導管壁 39 201242570 之自膨脹叉指之替代組態的側視圖。 圖1 7為用於使低溫氣球之至少一部分偏轉遠離導管壁 之自膨脹叉指之替代組態的側視圖。 圖1 8為用於使低溫氣球之至少一部分偏轉遠離導管壁 之自膨脹叉指之替代組態的側視圖。 圖1 9為用於使低溫氣球之至少一部分偏轉遠離導管壁 之自膨脹叉指之替代組態的側視圖。 【主要元件符號說明】 40 ⑧

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  1. 201242570 七 該 氣 及 第 中 氣 申請專利範圍: 種低溫療法器件,其包含: 該軸件經組態以將 一伸長軸件,其包鉍 \ 兵匕括—遠端部分, 退端彳分定位於—解剖導管中; -第-氣球’其在該遠端部分處; 沿該軸件之至少—部八 、儿兮± 刀的一第一供應内腔; /〇遠軸件之至少一八 内腔經由該第一氣球二、—第一排氣内腔’該第-排 」第孔球而流體連接至該第—供應内腔; 弟一虱球,其在該遠 兮笛站興該第一供應内腔 該第一排氣内腔流體分離, _ ^ ^ ^ 該第一軋球經組態以防止該 /球在垂直於該解剖導管之-長度之大體上任何平面 低溫冷卻該解剖導管之一壁之一全圓周; 沿該軸件之至少-部分的—第二供應内腔;及 沿該轴件之至少一部分的一第二排氣内腔,該第二排 内腔經由該第二氣球而流體連接至該第二供應内腔。 2.如申請專利範圍帛1項之低溫療法器件,其中— 該第一氣球為非柔性或半柔性的,且 該第二氣球為柔性的。 3·如申請專利範圍第丨項之低溫療法器件,其中一 該第一氣球之柔性小於1 〇%,且 該第二氣球之柔性介於50%與1〇〇〇/0之間。 4.如申請專利範圍第!項之低溫療法器件,其令— β亥第二氣球包括一近端部分及一遠端部分, 該第二供應内腔包括在該第二氣球之該近端部分及該 201242570 遠端部分中之一者處的一開口,且 該第二排氣内腔包括在該第二氣球之該近端部分及該 遠端部分中之另一者處的一開口。 5. 如申請專利範圍第丨項之低溫療法器件,其中_ 該低溫療法器件經組態以在加壓致冷劑經由該第一供 應内腔而遞送至該第一氣球、在該第一氣球中膨脹且經由 該第一排氣内腔而自該第一氣球排氣時低溫冷卻該解剖導 管之該壁的接近該第一氣球之一部分,且 該低溫療法器件經組態以在一熱傳遞流體經由該第二 供應内腔而遞送至該第二氣球、在該第二氣球内移動且經 由該第一排氣内腔而自該第二氣球排氣時暖化該第一氣 球。 6. —種用於治療一患者之方法,其包含: 將一低溫療法器件之一伸長軸件之-遠^分定位於 該患者之一解剖導管内; 將致冷劑遞送至該低溫療法器件之在該遠端部分處的 一第一氣球; 及 使該第一氣球内之該致冷劑膨脹以冷卻該第一氣球丨 冷卻該解料管之-壁的接近該第—氣球之—部分; 使-熱傳遞流體循環通過該低溫療法器 -氟球且與該第一氣球流體迎"第 J乐一軋球,以暖化該 第^氣球且緩和該解剖導管之該壁之該部分的該冷卻。 7.如申請專利範圍第6項之 法,其中使該熱傳遞流繼 42 201242570 循環致使該第一氣球之一溫度介於_1〇<〇與_4〇1之間。 8.如申請專利範圍第6項之方法’其進 剖導管之該壁之介於45。與225。之間的部分與該第一 & 接觸。 % 9·如申請專利範圍第6項之方法,其進一步包含— 用該致冷劑使該第-氣球半柔性或非柔性地膨脹;及 用該熱傳遞流體使該第二氣球柔性地膨脹。 10. 如申請專利範圍第6項之方法,其進一步包含使用 該第二氣球以防止該第一氣球在垂直於該解剖導管之一長 度之大體上任何平面中低溫冷卻該解剖導 圓周。 2心主 11. 一種低溫療法器件,其包含: 一第一導液管,其包括— 一第一伸長軸件,其具有一遠端部分, -第-氣球,其在該第一軸件之該遠端部分處, 沿該第-軸件之至少一部分的一供應内腔, 該排氣内 沿該第一轴件之至少一部分的—排氣内腔 腔經由該帛而流體連接至該供應内腔; 一第二導液管,其包括— 一第二伸長軸件,其具有一遠端部分,及 -第二氣球’其在該第二軸件之該遠端 -耦接器套筒’其經組態成在—解 行配置收納該第一導液管及該第二導液管s内且以-平 12·如申請專利範圍第"項之低溫療法器件,其進一步 43 201242570 包含一第三導液管,其中— 該第三導液管包括一 一第三伸長軸件,其具有一遠端部分,及 一第三氣球,其在該第三轴件之該遠端部分處, 該第二氣球及該第三氣球經組態以膨脹至不同大小, 且 , 該第二導液管及該第三導液管相對於該耦接器套筒可 互換。 J 13·如申請專利範圍第丨丨項之低溫療法器件’其進一步 包含連接至該耦接器套筒之一可膨脹外部鞘,其中該第一 氣球及該第二氣球經組態以在該第—導液管及該第二導液 管處於該純|§套筒内時—起裝g己於該可膨脹外部鞠内。 如申請專利範圍第u項之低溫療法器件,其中該低 溫療法器件經組態以在加壓致冷劑經由該第一#應内腔而 遞送至該第-氣球、在該第—氣球中膨脹且經由該第一排 氣内腔而自該第-氣球排氣時低溫冷卻接近該解剖導管之 一壁的接近該第一氣球之一部分。 15. 如申請專利範圍第丨丨項之低溫療法器件,其中該第 二氣球經組態以防止該第一氣球在垂直於該解剖導管之一 長度之大體上任何平面中低溫冷卻該解剖導 B *<- 5¾ 壁之一 全圓周。 16. 如申請專利範圍第丨丨項之低溫療法器件,其中— 該第一導液管包括沿該第一軸件之至少— °丨分且延伸 穿過該第一氣球的一第一導引線内腔,且 201242570 該第二導液管包括沿該第二軸件之至少一部分且延伸 穿過S亥第一氣球的一第二導引線内腔。 1 7. 一種用於治療一患者之方法,其包含: 將一第一導液管之一第一伸長軸件之一遠端部分定位 於該患者之一解剖導管内; 將致冷劑遞送至該第一導液管之在該第一轴件之該遠 端部分處的一第一氣球; 使該第一氣球内之該致冷劑膨脹以冷卻該第一氣球; 冷卻該解剖導管之-壁的接近該第—氣球之一部分; 基於該解剖導管之一大小及一第二導液管之一第二氣 球之一大小而自複數個導液管選擇該第二導液管; 將該第二導液管之一第二伸長轴件之一遠端部分定位 於該解剖導管内接近該第一伸長軸件之該第一遠端部分, 該第二氣球係、在該第二伸長軸件之該遠端部分處;及 使該第二氣球在該帛—氣球與該㈣導管之該壁之間 膨脹,以防止該第一氣球在垂直於該解剖導管之一長度i 大體上任何平面中低溫冷卻該解剖導管之該壁之一 周。 圓 W如申請專利範圍第17項之方法,其中定位該第一轴 件之該遠端部分與定位該第二軸件之該遠端部分 同時進行》 $八遐上 19.如申請專利範圍第17項之方法,其進—步 擇該第二導液管之後輕接該第一導液管與該第二導液3管。 2〇.如申請專利範圍第19項之方法,其_耦接該第一導 45 201242570 液管與該第二導液管包括將 以入夺, 將°亥第一導液管及該第二導液管 引入至一耦接器套筒中。 守狀s 2 1 ·_種低溫療法器件,其包含. 該軸件經組態以將 一伸長軸件,其包括一遠端部分 該遠端部分定位於一解剖導管中; 一伸長氣球,其在該遠端部分處; 沿該軸件之至少一部分的—供應内腔,· 沿該軸件之至少一部分的— .^ ^ . 乳内腔’該排氣内腔絰 由戎軋球而流體連接至該供應内腔:及 、 -伸長自膨脹又指,其在該遠端部分處, 其中一 該氣球經組態以優先膨脹以遠離該又指,且 該叉指經組態以防止該氣球在垂直於該解剖導管之一 長度之大體上任何平面中低溫冷卻該解剖導管之 全圓周。 ^ 一 22. 如申請專利範圍第21項之低溫療 球為非柔性或半柔性的。 丹T該氣 23. 如申請專利範圍第21項之低溫療法器 球之柔性小於10%。 丹Τ β亥乳 24. 如申請專利範圍第21項之低溫療法 該叉指為一第一又指, 其中— 該低溫療法器件進一步包含一第二又指, 該第一又指與該第二叉指可獨立地部署或可 起以改變該解剖導管之藉由該氣球低溫冷卻的一部八之大 46 201242570 小 25.如申請專利範圍第^項之低溫療法器件其中— 該叉指為一第一又指, 線 該低:療法器件進一步包含一第二又指,且 。第X私與該第二又指在近端連接至一推拉式導 26. 如申請專利範圍第25項之低溫療法器件,其中— 該第一又指與該第二又指在遠端連接,且 該低溫療法装^生, 冷古器件進一步包含在該第一叉指與該第二又 指之間的一對角支撐件。 27. 一種用於治療一患者之方法,其包含: f導液管之-伸長軸件之一遠端部分定位於該患者 之一解剖導管内; 在該軸件之該遠端部分處將—伸長又指按壓在該㈣ 導管之一壁之一第—部分上, 將致冷劑遞送至該導液管之在該軸件之該遠端部分處 的-氣球以冷卻該氣球且優純該氣球在遠離該又指之一 徑向方向上膨脹;及 冷卻該解剖導管之該壁的接近該氣球之一第二部分, 其中該又指促使該氣球輿兮站Λ丨裙拉 札衣興該解剖導管之該壁之該第二部 相抵且使該氣球與該解剖導 等官之該壁之該第一部間隔開。 2 8.如申請專利範圍第2 7馆夕士丄 珩27項之方法,其中該解剖導 該壁之該第一部分;5马·# ^ “第一 °卩分處於該解刮導管之該壁之 大體上相對側處。 47 201242570 29. 如申请專利範圍第27項之方法,其中將致冷劑遞送 至該氣球使該氣球非柔性或半柔性地膨脹。 30. 如申請專利範圍第μ招+ 士、+ #、 項之方法’其進一步包含控制 該又指之偏轉以控制該解 小。 ^導管之该壁之該第二部分的大 31.如申請專利範圍第27項之方 軸件之該遠端部分處選擇多個具進-步包含在該 管之該壁之該第-部分上,⑻而控制::以按壓在該解剖導 該第二部分的該大小。 亥解剖導管之該壁之 八、圖式: (如次頁) 48
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