JP7451100B2 - 可撓性回路電極を備える潅注電気生理学的バルーンカテーテルのための補強体 - Google Patents
可撓性回路電極を備える潅注電気生理学的バルーンカテーテルのための補強体 Download PDFInfo
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- JP7451100B2 JP7451100B2 JP2019120966A JP2019120966A JP7451100B2 JP 7451100 B2 JP7451100 B2 JP 7451100B2 JP 2019120966 A JP2019120966 A JP 2019120966A JP 2019120966 A JP2019120966 A JP 2019120966A JP 7451100 B2 JP7451100 B2 JP 7451100B2
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Description
機能不全心臓を治す心臓組織のアブレーションは、周知の手技である。通常、アブレーションを成功させるために、心筋のさまざまな位置で心臓の電極電位を測定する必要がある。更に、アブレーション中の温度測定により、アブレーションの有効性を測定することができるデータがもたらされる。通常、アブレーション手技に対して、実際のアブレーション前、アブレーション中、及びアブレーション後に、電極電位及び温度が測定される。
図1は、実施形態による、装置12を使用した侵襲性医療手技の概略図である。この手技は、医療専門家14により行われ、一例として、本明細書の以下の説明における手技は、ヒト患者18の心臓の心筋16の一部のアブレーションを含むと仮定される。しかし、本明細書において開示されている実施形態は、この特定の手技にしか適用されるわけではなく、生物学的組織又は非生物学的材料に対する実質的にいかなる手技をも包含し得ることが理解される。
上記の主題に関する継続中の研究及び製品開発の努力により、本出願人は、バルーン80が、折りたたみ構成にあるプローブ20のルーメン23から配置すること、拡張構成まで拡張すること、折りたたみ構成に戻ること、及びプローブ20をルーメン23内に引き戻すことからなる複数のサイクルに耐性がなければならないことを究明した。サイクル数は、約5回~約20回となり得る。すなわち、バルーン80の基材30と膜26との間の接続部、及び組み立て済みバルーンの総合的な一体性が、少なくとも5~20回の疲労サイクル、及び5~20回の配置の間に受けるいかなる追加的な摩擦応力、及びルーメン23内への5~20回の引き戻しに耐性がなければならない。本出願人は、反復疲労から生じるおそれがある、膜26からの近位尾部31P及び遠位尾部31Dの潜在的に層間剥離する可能性は非常に小さく、いかなるこのような層間剥離の可能性も防止するか、又はその可能性を少なくともかなり一層低くすると思われる解決策を実施すると考える。本出願人は、任意のこのような解決策は、1)いかなる解決策によっても引き起こされた同時に発生する安全性懸念の最小化;2)遠位尾部31D及び近位尾部31Pの付着時にバルーン80の部分の直径まで任意に大きくするのを最小化し、こうして折りたたみ構成にあるバルーン80が、それらの間の摩擦をほとんどなく又は増加させないで、ルーメン23から容易に配置することができる、及びルーメン23に引き戻すことができる(又は、とりわけ、究極的に、ルーメン23の直径を増大させる必要性を回避する);3)手技中に、電極30と組織との間の接触を確立するのを妨害するおそれがある、バルーン80の剛性まで任意に増大させることを最小化する;4)手技中に電極30と組織との間の電気的接触を妨害しない;及び5)アセンブリ工程の数の増加を最小化するなどのさまざまな設計上の制約に答える必要があると更に決めた。
(1) 近位端部及び遠位端部を含む膜と、
複数の基材であって、その各々が、前記膜の周辺に配設されている複数の尾部を含む、複数の基材と、
前記複数の尾部の少なくとも一部の上に配設されており、かつ前記膜に取り付けられている、補強体と、
を備える、カテーテルバルーン。
(2) 前記補強体が、未組み立てカテーテルバルーンの一部を備える、実施態様1に記載のカテーテルバルーン。
(3) 前記補強体が角のような形状を有する、実施態様1に記載のカテーテルバルーン。
(4) 前記膜が、ポリエチレンテレフタレート、ポリウレタン、ペレタン(Pellethane)又はPEBAXを含む、実施態様3に記載のカテーテルバルーン。
(5) 前記複数の尾部が、複数の近位尾部及び複数の遠位尾部を含み、前記複数の近位尾部が、前記バルーンの前記近位端部に近接して配設されており、前記複数の遠位尾部が、前記バルーンの前記遠位端部に近接して配設されている、実施態様1に記載のカテーテルバルーン。
(7) 前記補強体が前記複数の遠位尾部の上に配設されている、実施態様5に記載のカテーテルバルーン。
(8) 前記補強体が、第1の補強体であり、前記カテーテルバルーンが、前記複数の近位尾部の上に配設されている第2の補強体を更に含む、実施態様7に記載のカテーテルバルーン。
(9) 前記第1の補強体が、前記第2の補強体と対称である、実施態様8に記載のカテーテルバルーン。
(10) 前記膜が、それを通って配設されている灌注用開口部を更に含む、実施態様9に記載のカテーテルバルーン。
(12) 前記アブレーション電極の少なくとも1つが、前記基材の各々に配設されている、実施態様11に記載のカテーテル。
(13) 前記膜と前記複数の尾部の少なくとも1つとの間に配設されているフィラメントを更に備える、実施態様9に記載のカテーテルバルーン。
(14) 前記フィラメントが液晶ポリマーを含む、実施態様13に記載のカテーテルバルーン。
(15) 前記液晶ポリマーがベクトラン(Vectran)を含む、実施態様14に記載のカテーテルバルーン。
近位端部及び遠位端部を含む膜を有するカテーテルバルーンであって、前記近位端部が、前記第1のシャフト部分に接続されており、前記遠位端部が、前記第2のシャフト部分に接続されている、カテーテルバルーンと、
複数の基材であって、その各々が、前記膜の周辺に配設されている複数の尾部を含む、複数の基材と、
前記複数の尾部の少なくとも一部の上に配設されており、かつ前記膜に取り付けられている、補強体と、
を備える、カテーテル。
(17) 前記補強体の少なくとも一部の周りに配設されている環を更に備える、実施態様16に記載のカテーテル。
(18) 前記補強体が、未組み立てカテーテルバルーンの一部を備える、実施態様16に記載のカテーテル。
(19) 前記補強体が角のような形状を有する、実施態様18に記載のカテーテル。
(20) 前記膜が、ポリエチレンテレフタレート、ポリウレタン、ペレタン(Pellethane)又はPEBAXを含む、実施態様19に記載のカテーテル。
(22) 前記補強体が前記複数の近位尾部の上に配設されている、実施態様21に記載のカテーテル。
(23) 前記補強体が前記複数の遠位尾部の上に配設されている、実施態様21に記載のカテーテル。
(24) 前記補強体が、第1の補強体であり、前記カテーテルバルーンが、前記複数の近位尾部の上に配設されている第2の補強体を更に備える、実施態様23に記載のカテーテル。
(25) 前記環が、前記第1の補強体の周りに配設されている第1の環であり、前記バルーンが、前記第2の補強体の少なくとも一部の周りに配設されている第2の環を更に備える、実施態様24に記載のカテーテル。
(27) 複数のアブレーション電極を更に備える、実施態様25に記載のカテーテル。
(28) 前記アブレーション電極の少なくとも1つが、前記基材の各々の上に配設されている、実施態様27に記載のカテーテル。
(29) 前記シャフト及び前記バルーンに少なくとも部分的に配設されていて、前記アブレーション電極の少なくとも1つに接続されているリードワイヤを更に備える、実施態様27に記載のカテーテル。
(30) 前記膜と前記複数の尾部の少なくとも1つとの間に配設されているフィラメントを更に備える、実施態様25に記載のカテーテル。
(32) 前記液晶ポリマーがベクトラン(Vectran)を含む、実施態様31に記載のカテーテル。
Claims (17)
- 近位端部及び遠位端部を含む膜と、
複数の基材であって、その各々が、前記膜の周辺に配設されている複数の尾部を含む、複数の基材と、
前記複数の尾部の少なくとも一部の上に配設されており、かつ前記膜に取り付けられている、補強体と、
を備える、カテーテルバルーンであって、
前記複数の尾部が、複数の近位尾部及び複数の遠位尾部を含み、前記複数の近位尾部が、前記カテーテルバルーンの近位端部に近接して配設されており、前記複数の遠位尾部が、前記カテーテルバルーンの遠位端部に近接して配設されており、
前記補強体が前記複数の遠位尾部の上に配設されており、
前記補強体が、第1の補強体であり、前記カテーテルバルーンが、前記複数の近位尾部の上に配設されている第2の補強体を更に含み、
前記第1の補強体および前記第2の補強体が、同じ形状を有しており、かつ、前記カテーテルバルーンの中心線のまわりに対称に位置付けられている、カテーテルバルーン。 - 前記補強体が、未組み立てカテーテルバルーンの一部を備える、請求項1に記載のカテーテルバルーン。
- 前記補強体が角のような形状を有する、請求項1に記載のカテーテルバルーン。
- 前記膜が、ポリエチレンテレフタレート、ポリウレタン、ペレタン(Pellethane)又はペバックス(PEBAX)を含む、請求項3に記載のカテーテルバルーン。
- 前記膜が、それを通って配設されている灌注用開口部を更に含む、請求項1に記載のカテーテルバルーン。
- 複数のアブレーション電極を更に備える、請求項1に記載のカテーテルバルーン。
- 前記アブレーション電極の少なくとも1つが、前記基材の各々に配設されている、請求項6に記載のカテーテルバルーン。
- 第1のシャフト部分、及び前記第1のシャフト部分内に少なくとも部分的に配設されている第2のシャフト部分を有するシャフトと、
近位端部及び遠位端部を含む膜を有するカテーテルバルーンであって、前記近位端部が、前記第1のシャフト部分に接続されており、前記遠位端部が、前記第2のシャフト部分に接続されている、カテーテルバルーンと、
複数の基材であって、その各々が、前記膜の周辺に配設されている複数の尾部を含む、複数の基材と、
前記複数の尾部の少なくとも一部の上に配設されており、かつ前記膜に取り付けられている、補強体と、
を備える、カテーテルであって、
前記複数の尾部が、複数の近位尾部及び複数の遠位尾部を含み、前記複数の近位尾部が、前記カテーテルバルーンの近位端部に近接して配設されており、前記複数の遠位尾部が、前記カテーテルバルーンの遠位端部に近接して配設されており、
前記補強体が前記複数の遠位尾部の上に配設されており、
前記補強体が、第1の補強体であり、前記カテーテルバルーンが、前記複数の近位尾部の上に配設されている第2の補強体を更に含み、
前記第1の補強体および前記第2の補強体が、同じ形状を有しており、かつ、前記カテーテルバルーンの中心線のまわりに対称に位置付けられている、カテーテル。 - 前記補強体の少なくとも一部の周りに配設されている環を更に備える、請求項8に記載のカテーテル。
- 前記補強体が、未組み立てカテーテルバルーンの一部を備える、請求項8に記載のカテーテル。
- 前記補強体が角のような形状を有する、請求項10に記載のカテーテル。
- 前記膜が、ポリエチレンテレフタレート、ポリウレタン、ペレタン(Pellethane)又はペバックス(PEBAX)を含む、請求項11に記載のカテーテル。
- 前記環が、前記第1の補強体の周りに配設されている第1の環であり、前記カテーテルバルーンが、前記第2の補強体の少なくとも一部の周りに配設されている第2の環を更に備える、請求項8に記載のカテーテル。
- 前記第2のシャフト部分が、入れ子式の関係で、前記第1のシャフト部分内に配設されている、請求項13に記載のカテーテル。
- 複数のアブレーション電極を更に備える、請求項13に記載のカテーテル。
- 前記アブレーション電極の少なくとも1つが、前記基材の各々の上に配設されている、請求項15に記載のカテーテル。
- 前記シャフト及び前記カテーテルバルーンに少なくとも部分的に配設されていて、前記アブレーション電極の少なくとも1つに接続されているリードワイヤを更に備える、請求項15に記載のカテーテル。
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JP2020000867A (ja) | 2020-01-09 |
MX2019007868A (es) | 2019-12-30 |
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BR102019013384A2 (pt) | 2020-01-07 |
AU2019204311A1 (en) | 2020-01-16 |
CA3048279A1 (en) | 2019-12-29 |
RU2019120055A (ru) | 2020-12-29 |
KR20200003353A (ko) | 2020-01-09 |
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CN211911786U (zh) | 2020-11-13 |
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