JP2016527991A5 - リードレス心臓ペーシングデバイス及び同デバイスを含むシステム - Google Patents

リードレス心臓ペーシングデバイス及び同デバイスを含むシステム Download PDF

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JP2016527991A5
JP2016527991A5 JP2016534609A JP2016534609A JP2016527991A5 JP 2016527991 A5 JP2016527991 A5 JP 2016527991A5 JP 2016534609 A JP2016534609 A JP 2016534609A JP 2016534609 A JP2016534609 A JP 2016534609A JP 2016527991 A5 JP2016527991 A5 JP 2016527991A5
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いくつかの実施形態では、第1湾曲領域32の曲率半径が一定であってもよい。他の実施形態では、曲率半径は、第1湾曲領域32に沿って変化してもよい。例えば第1湾曲領域32は、放物線状の湾曲、双曲線状の湾曲、指数関数的な湾曲、一次多項式で規定される湾曲、二次多項式で規定される湾曲、三次多項式で規定される湾曲、四次多項式で規定される湾曲、またはそれ以上の次数の多項式で規定される湾曲等を含んでいてもよい。第1湾曲領域32は(例えば第1湾曲領域32が二次元においてのみ延びて)その全体が単一平面内に位置してもよく、あるいは第1湾曲領域32は(例えば第1湾曲領域32が三次元において延びて)1より多い平面内に存在してもよい。これらは単なる例である。他の湾曲、形状、構成等も意図する。
第2湾曲領域36はハウジング12に向かって湾曲していてもよい。少なくともいくつかの実施形態では、第2湾曲領域36の湾曲は第1湾曲領域32とは反対側に配向されていてもよい。第1湾曲領域32のように、第2湾曲領域36は一定の曲率半径または変化する曲率半径を有することができる。

Claims (19)

  1. 埋込み可能なリードレスペーシングデバイスであって、
    ハウジングを備えるペーシングカプセルであって、該ハウジングが近位領域および遠位領域を有する前記ペーシングカプセルと、
    前記遠位領域に沿って配置されている第1電極と、
    前記遠位領域の外周に互いに離間して配置されている複数の係止部材であって、各係止部材は湾曲部と基部領域とを含み、かつ前記基部領域の各々が前記遠位領域に結合されている、前記複数の係止部材と、を備え
    前記複数の係止部材は、第1の形態と配置される形態との間で移行可能であり、かつ、前記各係止部材の湾曲部は、前記配置される形態であるときに、湾曲部の複合体を有する領域を含み、
    前記各係止部材の少なくとも一部は、前記第1の形態及び前記配置される形態のいずれにおいても、前記遠位領域の遠位側に延びている、埋込み可能なリードレスペーシングデバイス。
  2. 前記湾曲部の複合体を有する領域は第1湾曲部分および第2湾曲部分を有する請求項1に記載の埋込み可能なリードレスペーシングデバイス。
  3. 前記第1湾曲部分は第1の方向に配向され、前記第2湾曲部分は、前記第1の方向とは異なる第2の方向に配向されている請求項2に記載の埋込み可能なリードレスペーシングデバイス。
  4. 前記第1の方向は前記第2の方向とは反対の方向である請求項3に記載の埋込み可能なリードレスペーシングデバイス。
  5. 直線状領域が前記第1湾曲部分と前記第2湾曲部分との間に配置されている請求項2に記載の埋込み可能なリードレスペーシングデバイス。
  6. 複数の係止部材の各々は尖った先端部分を備える請求項2に記載の埋込み可能なリードレスペーシングデバイス。
  7. 前記第1湾曲部分、前記第2湾曲部分、または前記第1湾曲部分と前記第2湾曲部分との双方は、前複数の係止部材が目的組織内に延びる場合に、前複数の係止部材を前記第1電極から側方に離間するように移動させる請求項2に記載の埋込み可能なリードレスペーシングデバイス。
  8. 前記第1湾曲部分、前記第2湾曲部分、または前記第1湾曲部分と前記第2湾曲部分との双方は、変化する曲率半径を有する請求項2に記載の埋込み可能なリードレスペーシングデバイス。
  9. 埋込み可能なリードレスペーシングデバイスシステムであって、前記システムは、
    近位部分、遠位保持部分、ならびに該近位部分および遠位保持部分内に構成されている内腔を有する送達カテーテルと、
    前記内腔内に摺動可能に配置されている押圧部材と、
    前記遠位保持部分内に摺動可能に受容されるリードレスペーシングデバイスと、を備え、
    前記リードレスペーシングデバイスは、
    近位領域および遠位領域を有するハウジングと、
    前記遠位領域に沿って配置されている第1電極と、
    前記遠位領域の外周に互いに離間して配置されている複数の係止部材であって、前記複数の係止部材の各々が湾曲部と基部領域とを含み、かつ前記基部領域の各々が前記遠位領域に結合されている、複数の係止部材と、を備え、
    前記複数の係止部材の各々は第1の形態と第2の形態との間で移行可能であり、前記第1の形態は前記リードレスペーシングデバイスが前記遠位保持部分内に配置されるときの形態であり、前記第2の形態は前記リードレスペーシングデバイスが前記遠位保持部分から進出するときの形態であり、
    前記遠位保持部分は長手方向軸線を有し、
    前記複数の係止部材は、同複数の係止部材が前記第1の形態であるときに、前記長手方向軸線に略平行に配置され、
    前記複数の係止部材の各々は、同複数の係止部材が前記第2の形態であるときに、湾曲部の複合体を有する領域を備え
    前記複数の係止部材の各々の少なくとも一部は、前記第1の形態及び前記第2の形態のいずれにおいても、前記遠位領域の遠位側に延びている、埋込み可能なリードレスペーシングデバイスシステム。
  10. 前記湾曲部の複合体を有する領域は第1湾曲部分および第2湾曲部分を備える請求項に記載のシステム。
  11. 前記第1湾曲部分は第1の方向に配向され、前記第2湾曲部分は、前記第1の方向とは異なる第2の方向に配向される請求項10に記載のシステム。
  12. 前記第1の方向は前記第2の方向とは反対の方向である請求項11に記載のシステム。
  13. 前記複数の係止部材が前記第1の形態であるときに、前記複数の係止部材の各々の当接部分は、前記遠位保持部分の内壁面に当接する請求項10に記載のシステム。
  14. 前記当接部分は前記複数の係止部材の各々の遠位端の近位に配置されている請求項13に記載のシステム。
  15. 前記当接部分は、前記複数の係止部材の各々の前記遠位端と前記遠位端の近位に配置される地点との間延びている請求項14に記載のシステム。
  16. 前記第1湾曲部分、前記第2湾曲部分、または前記第1湾曲部分と前記第2湾曲部分との双方は、前記複数の係止部材の各々が心臓組織内に延びる場合に、前記複数の係止部材の各々を前記第1電極から側方に離間するように移動させる請求項10に記載のシステム。
  17. 埋込み可能なリードレスペーシングデバイスシステムであって、前記システムは、
    近位部分、遠位保持部分、ならびに該近位部分および遠位保持部分内に構成されている内腔を有する送達カテーテルと、
    前記内腔内に摺動可能に配置されている押圧部材と、
    前記遠位保持部分内に摺動可能に受容されるリードレスペーシングデバイスと、を備え、
    前記リードレスペーシングデバイスは、
    近位領域および遠位領域を有するハウジングと、
    前記遠位領域に沿って配置されている第1電極と、
    前記遠位領域の外周に互いに離間して配置されている複数の係止部材であって、前記複数の係止部材の各々が湾曲部と基部領域とを含み、かつ前記基部領域の各々が前記遠位領域に結合されている、複数の係止部材と、を備え、
    前記複数の係止部材の各々は第1の形態と第2の形態との間で移行可能であり、前記第1の形態は前記リードレスペーシングデバイスが前記遠位保持部分内に配置されるときの形態であり、前記第2の形態は前記リードレスペーシングデバイスが前記遠位保持部分から進出するときの形態であり、
    前記複数の係止部材が前記第1の形態であるときに、前記複数の係止部材の各々の当接部分は、前記遠位保持部分の内壁面に当接し、
    前記当接部分は前記複数の係止部材の各々の遠位端の近位に配置されており、
    前記複数の係止部材の各々は、同複数の係止部材が前記第2の形態であるときに、湾曲部の複合体を有する領域を備える埋込み可能なリードレスペーシングデバイスシステム。
  18. 前記湾曲部の複合体を有する領域は第1湾曲部分および第2湾曲部分を有する請求項17に記載のシステム。
  19. 前記第1湾曲部分は第1の方向に配向され、前記第2湾曲部分は、前記第1の方向とは異なる第2の方向に配向されている請求項18に記載のシステム。
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