JP6906529B2 - 編込みまたは編組管状金属構成体 - Google Patents
編込みまたは編組管状金属構成体 Download PDFInfo
- Publication number
- JP6906529B2 JP6906529B2 JP2018537852A JP2018537852A JP6906529B2 JP 6906529 B2 JP6906529 B2 JP 6906529B2 JP 2018537852 A JP2018537852 A JP 2018537852A JP 2018537852 A JP2018537852 A JP 2018537852A JP 6906529 B2 JP6906529 B2 JP 6906529B2
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- fiber
- component
- tubular structure
- braided
- components
- Prior art date
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Description
本願は、2016年1月22日付で出願された、WOVEN OR BRAIDED TUBULAR METAL CONSTRUCTと題する米国特許仮出願第62/286062号の利益を主張するものであり、その全開示は参照により本明細書に援用される。
本明細書中の使用では、「ワイヤ」または「ワイヤ製品」は、例えば円形断面を有するワイヤ及び平坦なワイヤまたはリボンを含む非円形断面を有するワイヤ等の、連続的に生産されてその後の流通及び使用のためにスプールに巻回され得る、連続状ワイヤ及びワイヤ製品であり得る。「ワイヤ」または「ワイヤ製品」はまた、特定の用途に応じて特定の長さに生産され得る素線、ケーブル、コイル及び管類等の、上記以外のワイヤ系製品も包含する。一部の例示的実施形態では、本開示に従ったワイヤまたはワイヤ製品は、最大2.5mmの直径を有し得る。
図1Aに示す編組管状構成体10は、外径DO及び内径DIならびに長手方向軸Aを画成する概略管状の構成体を協働して形成する多数の構成要素12を含む。特に、各要素12は生産時にマンドレル(図示せず)周囲に巻回されて螺旋を形成する。それぞれの構成要素12は、十字交差螺旋の規則的重ね合せパターンが形成されて完成管状構成体10を生成するように、相互に編込みまたは編組される。多数の用途で、構成体10は、軸方向(即ち、構成体の軸方向長は長手方向軸Aに沿って印加された力により「引伸ばされ」または「押縮められ」得る)及び半径方向(即ち、長手方向軸Aが曲線または非線形形態に「湾曲され」得る)の両方向に本質的に可撓性である構造体である。本開示目的のために、完成形態の構成体10の直径DO、直径DI及び軸方向長は、構成体10が何らの外力も加えられない「自由状態」にあるときの計測値であるため、構成体10の全体的形状及びサイズは、その編組または編込み形態、その構成要素12の材料、及び熱処理等の任意の加工処理により決定づけられることになる(以下に更に説明する)。
上述のように、構成要素12は金属素線14から作製される。医療用具の目的に対しては、生体適合性金属または移植可能金属は素線14に好適な候補であり、316LVM及び2205等のステンレス鋼;MP35N、35NLT及びL605を含むコバルト系及びコバルトクロム合金;Nitinol(NiTi)、NiTi3元及び4元合金、及びチタンベータ合金を含む超可塑性合金;チタン合金;及びマグネシウム、亜鉛、鉄及びそれらの合金を含む生体吸収性金属が含まれる。これらの金属のうちのいずれも、DFT(上述)材料及び被覆ワイヤ材料等の、一体構造ワイヤまたは複合ワイヤ材料として形成可能である。
上述して図4に示したように、構成体10の例示的用途は、胸骨切開閉鎖プレート20に関連している。図示の実施形態では、閉鎖プレート20は、骨接合用ネジ24により切開部両側で患者の胸骨に固定され得、更にプレート20及び切開部両側の胸骨の隣接部分の周囲に構成体10を巻付けて締結部を形成することにより固定され得る。圧着具22は図示のように、構成体10の端部を固定してループを閉鎖するように使用し得る。好都合なことに、このような状況での構成体10の使用によって、平坦化及び自己調整された構成要素12(図5B)とこれに隣接する骨または組織の表面との間の接触表面積が最小化されることにより、隣接する骨での応力が最小化される。
Claims (15)
- 多繊条管状構成体であって、
外力の不存在下で内径、外径及び軸方向長さを画成する管状構成体に編込まれるかまたは編組された複数の構成要素を備え、
前記構成要素は各々、実質上相互に平行に延在するそれぞれの長手方向軸を有する複数の金属繊条体を備え、
前記管状構成体の端部に形成された少なくとも1つの摩擦ばめ嵌合部を更に備える、
多繊条管状構成体。 - 多繊条管状構成体であって、
外力の不存在下で内径、外径及び軸方向長さを画成する管状構成体に編込まれるかまたは編組された複数の構成要素を備え、前記構成要素は各々、実質上相互に平行に延在するそれぞれの長手方向軸を有する複数の金属繊条体を備え、
前記構成要素の前記複数の金属繊条体のうちの少なくとも1本は、吸収性金属で形成される、
多繊条管状構成体。 - 前記構成要素は、前記複数の金属繊条体の前記長手方向軸が各々実質上相互に平行に延在する螺旋を画成する撚合せケーブルである、請求項1又は2に記載の多繊条管状構成体。
- 前記構成要素の前記複数の金属繊条体は、2本〜343本の繊条体を備える、請求項1又は2に記載の多繊条管状構成体。
- 前記管状構成体の前記内径は、0.010インチ〜0.200インチである、請求項1又は2に記載の多繊条管状構成体。
- 前記管状構成体の前記外径は、0.014インチ〜0.208インチである、請求項5に記載の多繊条管状構成体。
- 前記複数の構成要素は、8本〜128本の構成要素を備える、請求項1又は2に記載の多繊条管状構成体。
- 前記複数の構成要素は、隣接する構成要素間のそれぞれの交差箇所で複数の打込みを画成し、前記打込みの数は前記管状構成体の外面に沿って軸方向インチ距離当り1〜50である、請求項1又は2に記載の多繊条管状構成体。
- 前記管状構成体の端部に形成された少なくとも1つの摩擦ばめ嵌合部を更に備える、請求項2に記載の多繊条管状構成体。
- 前記摩擦ばめ嵌合部は142lbf未満の分離力によっては前記管状構成体から脱離され得ない、請求項1又は9に記載の多繊条管状構成体。
- 前記吸収性金属は、マグネシウム、亜鉛、鉄及びそれらの合金のうちの少なくとも1種から成る、請求項2又は9に記載の多繊条管状構成体。
- 前記構成要素の前記複数の金属繊条体のうちの少なくとも1本は、ステンレス鋼で形成される、請求項1又は2に記載の多繊条管状構成体。
- 前記構成要素の前記複数の金属繊条体のうちの少なくとも1本は、超可塑性合金で形成される、請求項1又は2に記載の多繊条管状構成体。
- 前記超可塑性合金は、Nitinolから成る、請求項13に記載の多繊条管状構成体。
- 前記構成要素の前記複数の金属繊条体のうちの少なくとも1本は、コバルト系合金また
はコバルトクロム合金で形成される、請求項1又は2に記載の多繊条管状構成体。
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PCT/US2017/014355 WO2017127692A1 (en) | 2016-01-22 | 2017-01-20 | Woven or braided tubular metal construct |
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