JP7361724B2 - フレアチップを有するカテーテル - Google Patents
フレアチップを有するカテーテル Download PDFInfo
- Publication number
- JP7361724B2 JP7361724B2 JP2020564539A JP2020564539A JP7361724B2 JP 7361724 B2 JP7361724 B2 JP 7361724B2 JP 2020564539 A JP2020564539 A JP 2020564539A JP 2020564539 A JP2020564539 A JP 2020564539A JP 7361724 B2 JP7361724 B2 JP 7361724B2
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- JP
- Japan
- Prior art keywords
- tip
- core
- microcatheter
- petals
- flared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M39/10—Tube connectors; Tube couplings
- A61M39/1011—Locking means for securing connection; Additional tamper safeties
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Description
[0001]本出願は、その開示が参照により本明細書に援用される、2018年5月18日に出願された「RADIOEMBOLIZATION DELIVERY DEVICE」と題する米国特許仮出願第62/673,632号、および、その開示が参照により本明細書に援用される、2018年5月18日に出願された「DUAL-STAGE SYRINGES WITH LOCKING MECHANISM」と題する米国特許仮出願第62/673,628号の利益を主張するものである。
[0013]本明細書に記載の実施形態の追加の特徴および利点が、以下の詳細な説明において示され、部分的に、その説明から当業者に容易に明らかになるか、または以下の詳細な説明、特許請求の範囲、および添付の図面を含む、本明細書に記載の実施形態を実施することによって認識されよう。
[0031]ここで、フレアチップマイクロカテーテルの実施形態を詳細に参照する。実施形態において、フレアチップマイクロカテーテルは、シャフトと呼ばれる3つの同軸層と、コアと、ワイヤ層とを備えることができる。他の実施形態において、フレアチップマイクロカテーテルは、1つまたは複数の追加の層を備えることができる。実施形態において、フレアチップマイクロカテーテルはチップを更に備えることができ、そのようなチップは、機械的方法によって、作動させるかまたは「広げる(flared)」ことができ、それにより、フレア型チップを構成するようになっている。フレア型チップは、逆流を阻止することができ、医療処置中に脈管内で送達される粒子を均一に分散させることができる。実施形態において、フレアチップマイクロカテーテルのフレア型チップは、フレアチップマイクロカテーテルの遠位端における乱流量を低減することができる。更なる実施形態において、フレアチップマイクロカテーテルのフレア型チップは、従来のカテーテルの遠位端において観測される乱流量と比較して、フレアチップマイクロカテーテルの遠位端において呈する乱流がより少ない。フレアチップマイクロカテーテルの遠位端における乱流の量を低減することによって、放射性療法ミクロスフェア等の治療薬の送達に対する改善された制御を可能にすることができる。他の実施形態において、フレアチップマイクロカテーテルの遠位端における乱流量を低減することによって、スカウトビーズ(scout beads)、ブランドスフィア(bland sphere)、薬剤溶出性ビーズ、放射線塞栓スフィア、および化学塞栓スフィアを含む塞栓製品の送達に対する改善された制御を可能にすることができる。他の実施形態において、フレアチップマイクロカテーテルのフレア型チップは、脈管内の流れを制御するように脈管を遮蔽(又は、閉塞)するための流れのために用いることができる。更なる実施形態において、フレアチップマイクロカテーテルは、脈管内の流れを遮断または阻止することができる。
[0094]第3の態様は任意の先行する態様を含むことができ、少なくとも2つのペタルの各ペタルは1つのワイヤを含む。
[0097]第6の態様は任意の先行する態様を含むことができ、少なくとも2つのワイヤが、マイクロカテーテルの水平軸に沿って直線状に延びる。
[0099]第8の態様は任意の先行する態様を含むことができ、少なくとも4つのペタルを更に備える。
[0101]第10の態様は任意の先行する態様を含むことができ、少なくとも2つのペタルの各ペタルは2つ以上のワイヤを含む。
[0107]第16の態様は第15の態様を含むことができ、治療薬は、放射線療法ミクロスフェア、化学療法ミクロスフェア、またはこれらの組み合わせを含む。
[0110]第19の態様は第17~18の態様を含むことができ、治療薬は、放射線療法ミクロスフェア、化学療法ミクロスフェア、またはこれらの組み合わせを含む。
Claims (10)
- フレアチップマイクロカテーテルであって、前記マイクロカテーテルは、
内部にシャフト内腔が画定された中空シャフトと、
前記シャフト内腔内に配設されたコアであって、前記コアは中空であり、コア内腔を画定する、コアと、
前記コアの遠位端に取り付けられた少なくとも2つのペタルを備えるチップであって、前記少なくとも2つのペタルは少なくとも2つのワイヤを備える、チップと、
スライドであって、前記少なくとも2つのワイヤは前記スライドに取り付けられ、前記スライドは前記少なくとも2つのワイヤを引くように構成されるスライドと、
を備え、
前記少なくとも2つのワイヤは、前記少なくとも2つのペタルを引き、前記チップのフレア構成を形成するように構成され、
前記チップの前記フレア構成は、前記チップから遠位方向の治療薬の層流を可能にする、フレアチップマイクロカテーテル。 - 請求項1に記載のマイクロカテーテルであって、
前記少なくとも2つのワイヤは、前記シャフト内腔内の前記コアと前記シャフトとの間に配設される、マイクロカテーテル。 - 請求項1または2に記載のマイクロカテーテルであって、
前記少なくとも2つのペタルの各ペタルは1つのワイヤを含む、マイクロカテーテル。 - フレアチップマイクロカテーテルであって、前記マイクロカテーテルは、
内部にシャフト内腔が画定された中空シャフトと、
前記シャフト内腔内に配設されたコアであって、前記コアは中空であり、コア内腔を画定する、コアと、
前記コアの遠位端に取り付けられた少なくとも2つのペタルを備えるチップであって、前記少なくとも2つのペタルは少なくとも2つのワイヤを備える、チップと、
を備え、
前記少なくとも2つのワイヤは、前記少なくとも2つのペタルを引き、前記チップのフレア構成を形成するように構成され、
前記チップの前記フレア構成は、前記チップから遠位方向の治療薬の層流を可能にし、
前記少なくとも2つのペタルは継ぎ目において重なり合う、マイクロカテーテル。 - フレアチップマイクロカテーテルであって、前記マイクロカテーテルは、
内部にシャフト内腔が画定された中空シャフトと、
前記シャフト内腔内に配設されたコアであって、前記コアは中空であり、コア内腔を画定する、コアと、
前記コアの遠位端に取り付けられた少なくとも2つのペタルを備えるチップであって、前記少なくとも2つのペタルは少なくとも2つのワイヤを備える、チップと、
を備え、
前記少なくとも2つのワイヤは、前記少なくとも2つのペタルを引き、前記チップのフレア構成を形成するように構成され、
前記チップの前記フレア構成は、前記チップから遠位方向の治療薬の層流を可能にし、
前記少なくとも2つのワイヤは、前記マイクロカテーテルの長手方向軸に沿って直線状に延びる、マイクロカテーテル。 - フレアチップマイクロカテーテルであって、前記マイクロカテーテルは、
内部にシャフト内腔が画定された中空シャフトと、
前記シャフト内腔内に配設されたコアであって、前記コアは中空であり、コア内腔を画定する、コアと、
前記コアの遠位端に取り付けられた少なくとも2つのペタルを備えるチップであって、前記少なくとも2つのペタルは少なくとも2つのワイヤを備える、チップと、
を備え、
前記少なくとも2つのワイヤは、前記少なくとも2つのペタルを引き、前記チップのフレア構成を形成するように構成され、
前記チップの前記フレア構成は、前記チップから遠位方向の治療薬の層流を可能にし、
前記少なくとも2つのワイヤは、前記マイクロカテーテルの長手方向軸に沿って編組方式で前記コアの周りに絡み合う、マイクロカテーテル。 - 請求項1~6のいずれか一項に記載のマイクロカテーテルであって、
少なくとも4つのペタルを備える、マイクロカテーテル。 - 請求項1に記載のマイクロカテーテルであって、
前記スライドは、引っ張られるときに少なくとも前記2つのペタルを広げるように構成される、マイクロカテーテル。 - 請求項1~8のいずれか一項に記載のマイクロカテーテルであって、前記チップはX線不透過性チップである、マイクロカテーテル。
- フレアチップマイクロカテーテルであって、前記マイクロカテーテルは、
内部にシャフト内腔が画定された中空シャフトと、
前記シャフト内腔内に配設されたコアであって、前記コアは中空であり、コア内腔を画定する、コアと、
前記コアの遠位端に取り付けられた少なくとも2つのペタルを備えるチップであって、前記少なくとも2つのペタルは少なくとも2つのワイヤを備える、チップと、
1つまたは複数の追加のペタル列と、
を備え、
前記少なくとも2つのワイヤは、前記少なくとも2つのペタルを引き、前記チップのフレア構成を形成するように構成され、
前記チップの前記フレア構成は、前記チップから遠位方向の治療薬の層流を可能にする、フレアチップマイクロカテーテル。
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| US62/673,628 | 2018-05-18 | ||
| PCT/US2019/032965 WO2019222687A1 (en) | 2018-05-18 | 2019-05-17 | Catheter with flaring tip |
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| JP2020564539A Active JP7361724B2 (ja) | 2018-05-18 | 2019-05-17 | フレアチップを有するカテーテル |
| JP2023097742A Active JP7584573B2 (ja) | 2018-05-18 | 2023-06-14 | ラチェット式安全タブ、ラチェット式安全タブ注射器システム、ラチェット式安全タブ注射器システムを動作させる方法、注射器から投与された流体の流れパラメータを決定する方法、一体型一方向弁デュアルステージ注射器、および、一体型一方向弁デュアルステージ注射器を操作する方法 |
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