JP2680901B2 - 伸張可能な管腔内移植片 - Google Patents
伸張可能な管腔内移植片Info
- Publication number
- JP2680901B2 JP2680901B2 JP1257987A JP25798789A JP2680901B2 JP 2680901 B2 JP2680901 B2 JP 2680901B2 JP 1257987 A JP1257987 A JP 1257987A JP 25798789 A JP25798789 A JP 25798789A JP 2680901 B2 JP2680901 B2 JP 2680901B2
- Authority
- JP
- Japan
- Prior art keywords
- tubular member
- implant
- prosthesis
- tubular
- body passageway
- 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.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/826—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents more than one stent being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/828—Means for connecting a plurality of stents allowing flexibility of the whole structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
- A61F2002/91541—Adjacent bands are arranged out of phase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Graft Or Block Polymers (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Dental Preparations (AREA)
Description
t)内で使用するための伸張可能な管腔内移植片(expan
dable intraluminal graft)に関するものであり、更に
特定的には疾患により狭くなった又は閉塞した血管を修
復するために特に有用な伸張可能な管腔内脈管移植片
(expandable vascular graft)移植片及び伸張可能な
管腔内移植片を移植するための方法及び装置に関する。
ting)は慣用の脈管手術に替わるものとして可能である
ことが実験により示されてきた。管腔内脈管内移植には
管状プロテーゼ移植片の血管への経皮挿入及びその脈管
系内の所望の位置にカテーテルを介してそれを送り込む
ことが含まれる。慣用の脈管手術に対するこの方法の利
点は、欠陥のある血管を外科的に露出させ、切開し、除
去し、取り替え、又はバイパスを付ける必要をなくする
ことを含む。
は、ステンレス鋼コイルバネ;伸張可能な感熱性材料か
ら製造された螺旋状に巻かれたコイルバネ;及びジグザ
グパターンにステンレス鋼ワイヤから形成された伸張性
ステンレス鋼ステント(stents)が包含されていた。一
般に、上記の構造は共通した1つの重要な欠点を有して
いる。身体通路を通過するためには、これらの構造物は
しぼんだ(collapsed)状態で所定の身体通路内の所望
の位置に送られなければならないので、各構造物の最終
の伸張した形状に対する有効な制御ができなかった。例
えば、特定のコイルバネ型移植片の伸張は、コイルバネ
構造物を製造するのに使用された特定の材料のバネ定数
及び弾性率によって予め決定される。これらの同じファ
クターは、ステンレス鋼ワイヤからジグザグパターンに
形成されたしぼんだステントの伸張量を予め決定する。
加熱すると伸張する感熱性材料から形成された管腔内移
植片又はプロテーゼの場合には、伸張量は管腔内移植片
の製造に使用された特定の合金の熱膨張特性により同様
に予め決定される。
えば動脈又は静脈内の所望の位置で伸張させられると、
移植片の伸張した寸法は変えることができない。所望の
身体通路の直径を間違えて計算すると、寸法が足りない
移植片は身体通路の内側表面にしっかりと取り付けられ
るように身体通路の内側表面に接触するのに十分には伸
張されないことがある。その場合にはそれは身体通路内
の所望の位置から移動して離れることがある。同様に、
寸法が大き過ぎる移植片は、身体通路に対して移植片に
より及ぼされるバネ力又は伸張力が身体通路の破壊を引
き起こす程に伸張することがある。更に、身体通路の内
表面に及ぼされる一定の半径方向外向きの力は、動脈又
は身体通路の内表面又は内膜の侵食(erosion)を引き
起こすことがある。
ルに取り付けられた血管形成術バルーンの使用による弾
性脈管狭窄症(elastic vascular stenoses)又は遮断
障害(blockages)の経皮バルーン拡大(percutaneous
balloon dilation)であった。この方法においては、血
管の壁成分に剪断力をかけて血管の壁成分を崩壊させて
(disrupt)拡大された内腔を得るために、血管形成術
バルーンは狭窄血管又は身体通路内で膨らまされる。ア
テローム性動脈硬化症に関しては、身体通路のより弾性
の内側(medial)及び外膜(adventitial)層はプレー
ク(plaque)の回りに伸びるが、比較的圧縮不能なプレ
ークは変化しないままである。この方法は動脈又は身体
通路の切り裂き(dissection)又は裂け(splitting)
及び引き裂き(tearing)を生じ、動脈又は身体通路の
脈管内膜(intima)又は内側表面はき裂(fissuring)
を生じる。この切り裂きは下にある組織の「フラップ」
(flap)を形成し、フラップは内腔を通る血流を減少さ
せたり内腔を閉塞することがある。典型的には、身体通
路内の拡張する(distending)管腔内圧力が、崩壊した
層又はフラップを所定の位置に保持することができる。
バルーン拡大過程により生じた脈管内膜フラップが伸張
された脈管内膜に対して所定の位置に保持されていない
ならば、脈管内膜フラップは内腔内に折れそして内腔を
ふさぐことがあり又は離れたり身体通路に入ったりする
ことすらある。脈管内膜フラップが身体通路をふさぐ場
合には、この問題を直すために直ちに手術が必要であ
る。
(catheterization lab)で行なわれるけれども、前記
の問題のため、脈管内膜フラップが血管又は身体通路を
ふさぐ場合に備えて外科医を待機させることが常に必要
である。更に、脈管内膜フラップが血管から引き裂けた
り内腔をふさいだりする可能性があるため、バルーン拡
大は或る極めて重要な身体通路、例えば心臓に通じてい
る左主冠状動脈に対して行うことはできない。バルーン
拡大法により形成された脈管内膜フラップが急に左主冠
状動脈の如き重要身体通路に落ち込みそしてそれをふさ
ぐならば患者は手術を行う前に死亡することがある。
は狭窄性病変(stenotic lesion)の弾性跳ね返り(ela
stic recoil)のために多くが失敗するということであ
る。これは通常病変における高いフィブロコラーゲン含
有率により起こり、そして時には拡大されるべき区域の
或る機械的特性に起因する。故に、身体通路は最初はバ
ルーン拡大法により都合良く伸張させられうるけれど
も、身体通路の以前に伸張させられた内腔の寸法を減少
させる身体通路の跳ね返り(recoil)によりその後の早
期の再発狭窄症(restenosis)が起こることがある。例
えば、入口(ostium)における腎臓動脈の狭窄症は、前
記拡大力が腎臓動脈自体にかかるよりはむしろ大動脈壁
にかかるため、バルーン拡大による治療がしにくいこと
が知られている。例えば透析路フィステル(dialysis−
access fistulas)においてみられるような、新生内膜
線維症(neointimal fibrosis)により引き起こされる
脈管狭窄症は、拡大するのが困難であり、そのため高い
拡大圧力及びより大きいバルーン直径を必要とすること
が証明された。同様な困難が、移植動脈吻合狭窄症(gr
aft−artery anastomotic strictures)及び動脈内膜切
徐後の再発狭窄症(postendarterectomy recurrent ste
noses)の血管形成術において観察された。高安動脈炎
(Takayasu arteritis)及び神経線維腫症動脈狭窄症
(neurofibromatosis arterial stenoses)の経皮血管
形成術は、不十分な初期応答及びこれらの病変の線維症
の性質(fibrotic nature)によると考えられる再発を
示すことがある。
め、又は他の身体通路を修復するために、管状プロテー
ゼ移植片の挿入などにより修復を必要とする身体通路の
長さは、必要な移植片の長さがカテーテルにより移植片
が通される身体通路の曲がり部又は湾曲部を乗り越える
ことができない場合には、問題となることがある。換言
すれば、多くの場合に、移植片によって身体通路内の或
る長さの組織を支持することが必要であり、この場合、
必要とされる移植片の長さが、脈管内の所望の位置にカ
テーテルを介して容易に送ることができる移植片の長さ
を越える。移植片には、脈管系内に存在する曲がり部及
び湾曲部を乗り越えるのに必要な曲がる能力を持たない
ものがあり、特に比較的硬質で長手方向軸線に対する曲
がりに抵抗するプロテーゼ又は移植片はそうである。
窄症の再発を防止し;患者の心臓の左主冠状動脈のよう
な極めて重要な身体通路に使用することができ;身体通
路壁の跳ね返りを防止し;そして管腔内移植片が可変寸
法に伸張させられて移植片が所望の位置から離れるよう
に移動するのを防止することを可能としそして伸張させ
られた移植片による身体通路の破壊及び/又は侵食を防
止することを可能とし;身体通路の細長い区域の組織が
細長い移植片により支持されることを可能とし;そして
脈管系における曲がり部及び湾曲部を乗り越えるのに必
要な柔軟性を与える、身体通路の管腔を伸張させるため
の伸張可能な管腔内脈管移植片はなかった。故に、当業
界では、身体通路における狭窄症の再発を防止し;心臓
の左主冠状動脈のような極めて重要な身体通路に使用す
ることができると考えられ;身体通路の跳ね返りを防止
し;身体通路内で可変寸法に伸張させられて移植片が所
望の位置から離れるように移動するのを防止しそして伸
張させれられた移植片による身体通路の破壊及び/又は
侵食を防止することができ;身体通路の細長い区域の組
織が細長い移植片により支持されることを可能とし;そ
して脈管系における曲がり部及び湾曲部を乗り越えるの
に必要な柔軟性を与える、伸張可能な管腔内脈管移植片
が探し求められてきた。
腔内脈管移植片により達成された。本発明は、複数の薄
肉管状部材、 ここで、該管状部材の各々は第1の端部、第2の端部
及び該第1の端部と第2の端部との間に配置されている
壁表面を有し、該壁表面は実質的に均一な厚さを有して
おりそして該壁表面には複数のスロットが形成されてお
り、該スロットは各管状部材の長手方向軸線に実質的に
平行に配置されており;及び、 隣接管状部材間に配置されていて隣接管状部材を柔軟
に接続する単一のコネクタ部材、 ここで、該単一のコネクタ部材は、管状部材の長手方
向軸線に対して実質的に平行な関係にてそして各管状部
材と同一平面に配置されており; とを備えて成り; 各管状部材は、管腔を持った身体通路内への前記管状
部材の管腔内送り込みを可能とする第1の直径を有し; 前記管状部材は、該管状部材の内側から半径方向外向
きに伸張させる力を加えられたとき伸張しそして変形し
た第2の直径を有し、該第2の直径は可変でありそして
該管状部材に及ぼされる力の量に依存しており、それに
より、該管状部材は身体通路の管腔を伸張させるように
伸張及び変形することができる。
の細長い棒状部材とすることができそして隣接する管状
部材と同一平面とすることができるということである。
本発明の付加的な特徴は、第1のコネクタ部材を、第1
の管状部材の第2の端部と第2の管状部材の第1の端部
との間に配置することができ;第2のコネクタ部材を、
第2の管状部材の第2の端部と第3の管状部材の第1の
端部との間に配置することができ;第1及び第2のコネ
クタ部材は、管状部材の長手方向軸線に対して互いに角
度的にずれていることにある。
に提唱された先行技術の管腔内移植片と比較したとき、
狭窄症の再発を防止し;心臓の左主冠状動脈におけるよ
うな極めて重要な身体通路における移植片の移植を可能
とすると考えられ;身体通路の跳ね返りを防止し;伸張
させられた移植片による身体通路の侵食を防止し;身体
通路内の条件に依存して変動可能な寸法に移植片を伸張
させることを可能とし;身体通路の細長い区域の組織が
細長い移植片により支持されることを可能とし;そして
脈管系のような身体通路における曲がりくねった曲がり
部及び湾曲部を乗り越えるのに必要な柔軟性を与える;
という利点を有している。
その態様に限定することを意図するものではないことを
理解されたい。反対に、本発明は、特許請求の範囲に示
された本発明の精神及び範囲内に包含されるすべての替
りの態様、修正及び均等手段を包含することを意図す
る。
は身体通路のための伸張可能なプロテーゼ70が例示され
ている。用語「伸張可能な管腔内脈管移植片」及び「伸
張可能なプロテーゼ」とは、本発明の方法、装置、及び
構造が血管又は身体通路の部分的に閉塞されたセグメン
トを伸張させるための伸張可能な管腔内脈管移植片に関
連してのみならず、他の多くの型の身体通路のための伸
張可能なプロテーゼとして多くの他の目的にも使用する
ことができる限りにおいて、本発明を説明する際に或程
度交換可能に使用されることは理解されるべきである。
例えば伸張可能なプロテーゼ70は(1)トランスルミナ
ル再疎通(transluminalu recanalization)により開か
れているが、内部支持体の不存在下ではつぶれそうな閉
塞された動脈内の支持移植片配置;(2)手術不能のガ
ンにより閉塞された縦隔静脈(mediastinal vein)及び
他の静脈を通るカテーテル通路に従う同様な使用;
(3)門脈高圧症(portal hypertension)に罹患して
いる患者の門脈と肝臓静脈間のカテーテルで作られた肝
内の連通を生じさせるカテーテルの強化;(4)食道、
腸、尿管、尿道の狭窄化の支持移植片配置(supportive
graft placement);及び(5)再開された又は以前に
閉塞された胆管の支持移植片の強化;のような目的にも
使用することができる。従って、用語「プロテーゼ」の
使用は種々の形式の身体通路内の前述の使用法を包含
し、そして用語「管腔内脈管移植片」の使用は身体通路
の内腔を伸張させるための使用を包含する。更にこの点
について、用語「身体通路」は前記したような人体内の
任意の管及び人間の脈管系内の任意の静脈、動脈又は血
管を包含する。
内脈管移植片又はプロテーゼ70は、第1及び第2の端部
72、73と該第1及び第2の端部72、73との間に配置され
た壁表面74を有する管状部材71を一般に具備することが
示されている。管状部材71は、後に詳細に説明するよう
に、内腔81を有する身体通路80内への管状部材71の管腔
内送り込みを可能とする第1の直径、dを有する(第3
図)。第1B図を参照すると、後に詳細に説明するよう
に、半径方向外向きに伸び広げる力が管状部材の内側か
ら加えられると、管状部材は第2の伸張した直径、d′
を有し、該第2の直径d′は寸法が可変であり、管状部
材を変形させるように加えられた力の量に依存する。
ゼが接触し得る体液(図示されていない)と適合性のあ
る任意の適当な材料であってもよい。管状部材71は、管
状部材71が第1A図に示された形状から第1B図に示された
形状に伸張し且つ変形することを許容すると共に、更に
管状部材71が第1B図に示された拡大された直径d′を有
するその伸張され且つ変形した形状を保持し、半径方向
の圧し潰しに抵抗することを許容するのに必要な強度及
び及び弾性特性を有する材料から作られなければならな
い。管状部材を製造するのに適当な材料には、銀、タン
タル、ステンレス鋼、金、チタン又は前記した必要な特
性を有する任意のプラスチック材料が包含される。
薄肉のステンレス鋼の管であり、多数のスロット82が管
状部材71の壁表面74に形成されている。第1A図に示され
るように、管状部材71が第1の直径dを有するとき、ス
ロット82は管状部材71の長手方向の軸線に事実上平行に
配置されている。第1A図に示されるように、スロット82
は好適には接続部材77によって隣接するスロット82から
均一に且つ周方向に一定の間隔を保っており、該接続部
材77は第1A図に示されるように、スロット82の幅に等し
い長さを有することが好ましい。スロット82は管状部材
71の長手方向の軸線に沿って隣接するスロットと均一な
間隔を保っており、この間隔は接続部材77の幅と等しい
ことが好ましい。このようにスロット82の形成は、第1A
図に示すように、少なくとも一つの細長い部材75が、隣
接するスロット82の間に形成され、細長い部材75は管状
部材71の第1及び第2の端部、72、73の間に延びる結果
をもたらす。
第1及び第2の端部に配置されている接続部材77と共に
第1及び第2の端部を有することになる。好適には、各
スロット82の第1及び第2の端部は、管状部材71の長手
方向軸線に沿った隣接するスロット82の第1及び第2の
端部の中間に配置されている。従って、各スロット82の
第1及び第2の端部にあり、細長い部材75の間に配置さ
れている接続部材77は、管状部材71の長手方向軸線に沿
って隣接するスロット82の第1及び第2の端部の中間に
配置されることになる。従って、好適にはスロット82は
隣接するスロット82から均一に且つ周方向に一定の間隔
を保たれており、且つ管状部材71の長手方向軸線に沿っ
て相互に隣接しているスロット82は、互に互い違いの関
係にある。管状部材71の第1及び第2の端部72、73の両
者において管状部材71の円周の周りに配置された一つ置
きのスロットは、完全なスロット82の長さの約半分に等
しいだけの長さを有しており、該半分のスロット82は管
状部材71の第1及び第2の端部72、73の両端部において
部材78、79により接合している。第1A図及び第1B図の移
植片又はプロテーゼ、70は2つのスロット82の長さにほ
ぼ等しい長さを有しているように例示されているが、移
植片70の長さは必要に応じてより長く又は短く作ること
もできる。
ロテーゼ70が、後に詳細に記載されるように、管状部材
71の内部から適当な力を加えることにより、制御された
方式で、均一に及び外向きに、第1B図に示されたような
形状に、伸張せしめられることを可能とするものであ
る。更に、管状部材71の第1B図に示された形状への伸張
が管状部材71の長さ方向に沿って均一であるのは、前述
のようにスロット82の間の間隔が均一であるばかりでな
く、壁表面74、又は接続部材77、細長い部材75、及び部
材78、79の厚さが同じ均一な厚さであるからである。第
2図に例示されるように、細長い部材75の厚さが均一で
あることが示され、及び細長い部材75、接続部材77及び
部材78、79の好適な断面形状が例示されており、その形
状は長方形である。勿論当業者には前記の移植片、又は
プロテーゼ70の部品の断面形状は、正方形、長方形又は
他の断面形状であってもよいことが理解されるべきであ
る。後で詳細に記載されるように、人体通路80と接触す
る移植片又はプロテーゼ70(第4図)の外側表面74は比
較的平滑でなければならない。
し第1B図に示されるような形状に変形した後、第1B図に
示すように、管状部材71が第2の伸張した直径d′を有
する時、スロット82は事実上六角形の形状を呈するであ
ろう。かような六角形の形状は、スロット82が最初に事
実上長方形の形状を有し、管状部材71が第1A図に示した
ような第1の直径dを有する時に結果として生じるもの
である。スロット82の幅を事実上減少させ、これによつ
て接続部材77の長さが一点交差に近似すれば、かような
管状部材71の伸張の結果、スロット82は事実上平行四辺
形である形状(図示せず)を呈することに留意すべきで
ある。
1B図に示された形状に達するばかりでなく、管状部材71
は更に“変形”してその形状に達する。“変形”という
用語は、移植片又はプロテーゼ70が製造された材料が、
管状部材71を製造するために使用された材料の弾性限界
よりも大きい力に暴露されることを意味する。従ってそ
の力は、細長い部材75を永久的に曲げ、それにより細長
い部材75のセグメントが接続部材77の周りにピボット回
転(pivot)し、それらがピボット回転する際に、管状
部材71が第1直径dから第1B図の伸張した直径d′まで
増大することにより周辺方向に移動するのに充分な力で
ある。後で詳細に記載されるように、管状部材71を伸張
するために加えられる力は、管状部材71を伸張させるだ
けでなく、前記の方式で細長い部材75をも変形させ、そ
れにより接続部材77の端部の周りにピボット回転する細
長い部材75の一部が「スプリングバック(spring bac
k)」せず、第1A図に示されたような形状を呈すること
がなく、第1B図に図示した形状を保持するのに充分でな
ければならない。移植片又はプロテーゼ70が一旦伸張
し、第1B図に示されたような形状に変形すると、移植片
又はプロテーゼ70は、後で詳細に記載されるように、身
体通路が潰れることを防止するのに役立つ。管状部材71
が第1A図に示された第1の直径dを有する時、又は管状
部材71が伸張して第1B図に示す第2の伸張した直径d′
に変形した後、管状部材71は外向きの半径方向の力を及
ぼす傾向のある、「ばね様(spring−like)」又は「自
己伸張性部材(self−expanding member)」ではないの
で、管状部材71は何等外向きの半径方向の力を及ぼすこ
とがない。
細に記載されている。この場合も、本発明の装置は静
脈、動脈又は人間の脈管系内の血管のような身体通路の
内腔を伸張させるためのみならず、前記した方法を行っ
て前記したような他の身体通路又は管を管腔内で強化す
る(intraluminally reinforce)のにも有用であること
が理解されるべきである。更に第3及び4図に関して、
第1A図及び1B図に関連して前記した形式の伸張可能な管
腔内脈管移植片又はプロテーゼ70は、カテーテル83上に
配置又は取り付けられる。カテーテル83はそれに関連し
た伸張可能で膨張可能な部分84を有している。カテーテ
ル83は、伸張可能な管腔内脈管移植片又はプロテーゼ70
をカテーテルの伸張可能で膨張可能な部分84に取り付け
及び保持するための手段85を含むことができる。取り付
け及び保持手段85は、カテーテル83の伸張可能な膨張可
能な部分84に隣接してカテーテル83上に配置された保持
器リング部材86を具備し;そして保持器リング部材86は
伸張可能な管腔内脈管移植片又はプロテーゼ70の各端部
72、73に隣接して配置されている。第3図に示すよう
に、保持器リング部材はカテーテル83と一体的に形成さ
れ、後で詳細に説明するように、移植片又はプロテーゼ
70が身体通路70の内腔81に挿入される時それを保護又は
保持するために、カテーテル83の先導チップ87に隣接し
た保持器リング部材86は、カテーテルチップ87から遠ざ
かる方向に登り勾配をもっていることが好ましい。第3
図に示すように、残りの保持器リング部材86は、身体通
路80からのカテーテル83の容易な除去を確実にするため
に、カテーテル83のチップ87から遠ざかる方向に下り勾
配を持っている。伸張可能な管腔内移植片又はプロテー
ゼ70が前記したようにカテーテル83上に配置された後、
移植片又はプロテーゼ70及びカテーテル83は、慣用の方
法で身体通路80のカテーテル挿入(catheterization)
により身体通路80内に挿入される。
プロテーゼ70は身体通路内の所望の位置に送り込まれ、
そこで管腔内移植片70を経由して身体通路80の内腔81を
伸張させることが望まれ、又はそこでプロテーゼ70を移
植することが望まれる。カテーテル83及び移植片又はプ
ロテーゼ70が身体通路内に所望の位置に送り込まれるこ
とを確実にするために、X線透視検査(Fluoroscopy)
及び/又は他の慣用の方法を利用することができる。次
いでプロテーゼ又は移植片70は、カテーテル83の伸張可
能な膨張可能な部分84を制御下に伸張させられ、変形せ
しめられ、それによりプロテーゼ又は移植片70は、第4
図に示すように、身体通路80と接触するように伸張さ
れ、半径方向外向きに変形させられる。この点につい
て、カテーテル83の伸張可能な膨張可能な部分は慣用の
血管形成術バルーン88であることができる。プロテーゼ
又は移植片70の所望の伸張が終了した後、血管形成術バ
ルーン88はしぼまされ又は収縮させられ、そしてカテー
テル83は慣用の方法で身体通路80から除去することがで
きる。必要に応じ、第3図に示されたように移植片及び
プロテーゼ70が配置されているカテーテル83は、最初慣
用のテフロン鞘89又はその他の適切な材料から作られ
た鞘89に包まれていてもよく、鞘89はプロテーゼ又は移
植片70の伸張の前にプロテーゼ又は移植片70から引っ張
り離される。
植片70の管状部材71は、前記したように身体通路80内に
挿入されるのを可能とするために、最初は第1A図に関連
して記載されたような第1の所定のしぼまされた直径d
を有することに留意すべきである。前記した目的でプロ
テーゼ70を身体通路80内に移植することが必要な場合
は、プロテーゼ70は制御可能な方法で伸張され且つ第2
の直径d′に変形され、そして第2の直径d′は可変で
あり、そして第4図に示されるように身体通路80の内径
により、及びカテーテル83の膨張可能な部分84の伸張の
量によってd′が決定される。従って、伸張され且つ変
形したプロテーゼ70は、血管形成術バルーン88が収縮す
ると身体通路80内の所望の位置から移動することができ
ず、プロテーゼ70の伸張は多分身体通路80の破断(rupt
ure)を引き起こさないであろう。更に、プロテーゼ又
は移植片70が「ばね様」又は「自己伸張性部材」でない
限りは、プロテーゼは身体通路80の半径方向の潰れに抵
抗するのに必要な力以上に、外向きの半径方向の力を常
時身体通路80の内部表面に対し及ぼすことはない。こう
して動脈又は身体通路の内部表面又は内膜の侵食(eros
ion)が防止される。
のに伸張可能な管腔内移植片70を使用することが必要な
場合には、血管形成術バルーン88による管腔内脈管移植
片の伸張は狭窄症区域の制御された拡張を可能とし、同
時に脈管移植片70の制御された伸張及び変形を可能と
し、それにより脈管移植片70は身体通路80がしぼんだ
り、先に伸張させられた内腔81の寸法が減少したりする
のを防止する。この場合も、第4図に示されたような、
管腔内脈管移植片70の第2の伸張させられた直径d′は
可変であり、そして身体通路80の所望の伸張させられた
内径により決定される。かくして、伸張可能な管腔内移
植片70は、血管形成術バルーン88が収縮しても身体通路
80内の所望の位置から離れるように移動せず、管腔内移
植片70の伸張は、前記のように身体通路80の破断を引き
起こさず、又何等の侵食をも起こさないようである。更
に内膜フラップ又は裂溝(fissure)が身体通路80内で
移植片70の位置に形成されているならば、移植片70はこ
のような内膜フラップが身体通路80へと内方に折り込ま
れ得ないこと、及びゆるく引き裂けたり身体通路80を通
って流れたりしないことを確実にする。左主冠状動脈の
ような重要な身体通路の部分の内腔を伸張させるために
前記した方法で移植片70を使用する状況においては、内
膜フラップは心臓の左主冠状動脈を閉塞することはでき
ず、そして患者の死を引き起こすことはないと信じられ
る。
一回しか膨らます必要はないので、トランスルミナル血
管形成術(transluminal angioplasty)期間中内皮の表
皮剥落(endothelial denudation)の程度がバルーンの
膨らまし時間に比例する限りは、より多くの量の内皮、
又は内膜の内側層、又は身体通路の内側表面が保存され
ると信じられる。更に、理論上は、移植片70の伸張させ
られた形状においては、可能性として内皮の80%が移植
片の開口又は伸張されたスロット82を通して露出される
ので、保存される内皮(preserved endothelium)の量
は大きい筈である。更に、移植片70の伸張されたスロッ
ト82内の内皮の損なわれていないパッチが実験的研究に
より示されたように、迅速な多中心内皮化パターン(mu
lticentric endothelialization pattern)をもたらし
得ると信じられる。
関連して先に記載したプロテーゼ又は移植片70が示され
ており、そして移植片又はプロテーゼ70の管状部材71は
管状の形状の部材71の壁表面74上に生物学的に不活性な
又は生物学的に適合性のある被覆90が配置されている。
適当な生物学的に不活性な被覆の例は、多孔性ポリウレ
タン、テフロン又は他の慣用的な生物学的に不活性な
プラスチック材料である。被覆90は、プロテーゼ又は移
植片70の所望の伸張及び変形を妨害しないように薄く且
つ高度に弾性的でなければならない。被覆90は更に管状
部材71を身体通路80に固着させるための手段91(第6
図)を具備していてもよい。固着手段91は被覆90上に形
成された多数の外側半径方向に延びている突起92から成
っていてもよい。第6図に示すように、外側半径方法に
延びている突起92は多数のリッジ(ridge)93、又は他
の形式の外側半径方向に延びている突起を包含すること
ができる。更に、第5図に示されるように、被覆90内に
多数の開口94を形成させることが望ましく、そのことに
よって、身体通路80内に含まれる体液が拡張された又は
伸張された身体通路区域と直接接触することができる。
生物学的に適合性のある被覆90の例は、吸収性の縫合糸
を製造するために使用されるような吸収性重合体から製
造された被覆を包含する。このような吸収性の重合体は
ポリグリコリド、ポリラクチド、及びそれらの共重合体
を含んでいる。該吸収性重合体は又、被覆90が吸収さ
れ、又は溶解されるにつれて、薬品が徐々に身体通路中
に放出されるような、各種の形式の薬品を含むことも可
能である。
プロテーゼ70よりも長いプロテーゼ又は移植片70′が必
要とされる場合に、曲がった身体通路80内に移植するた
め又は身体通路80の細長い区域に使用するための、伸張
可能な管腔内脈管移植片又はプロテーゼ70′が示されて
いる。第1A図乃至第6図に関連して前記した要素とデザ
イン、構成及び操作が同じである要素については第7図
及び第8図全体にわたり同じ参照番号を使用し、第1A図
乃至第6図に関連して前記した要素とデザイン、構成及
び操作が類似している要素については、添字のついた参
照番号を使用する。
70′は、一般に、複数の、第1A図、第1B図及び第2図に
示されたような移植片又はプロテーゼ70を含んで成る。
隣接管状部材71間に又は隣接移植片又はプロテーゼ70間
に配置されているのは、隣接管状部材71又は移植片もし
くはプロテーゼ70を柔軟に接続するための単一のコネク
タ部材100である。コネクタ部材100は、好ましくは、前
記したような、移植片70と同じ材料から形成され、そし
てコネクタ部材100は、第7図に示すように、隣接移植
片70又は管状部材71かんで一体的に形成されてもよい。
移植片又はプロテーゼ70′の長手方向軸線に沿ったコネ
クタ部材100の断面形状は、コネクタ部材100が細長い部
材75の同じ均一な厚さを有するという点で同じであり、
そして隣接する管状部材71と同一平面にある薄い壁の細
長い棒状部材101を形成する。勿論、それに替わるもの
として、コネクタ部材100の厚さは細長い部材75の厚さ
よりも薄くすることができることは、当業者には容易に
明らかであろう。しかしながら、コネクタ部材100の外
周表面101は、第7図に示すように、移植片又はプロテ
ーゼ70の壁表面74により形成された同じ面内にあること
が好ましい。
テーゼ70′は、コネクタ部材100により柔軟に接続され
ている3つの移植片又はプロテーゼ70を含むものとして
例示されているけれども、2つといったような少数の移
植片70を接続して移植片又はプロテーゼ70′を形成する
ことができることに留意されるべきである。更に、所望
に応じて多くの移植片70をコネクタ部材100により柔軟
に接続して、移植片又はプロテーゼ70′を形成すること
ができる。好ましくは、各移植片又はプロテーゼ70の長
さは、近似的に2つのスロット82の長さである;しかし
ながら、各移植片70の長さを2つ又はそれ以上のスロッ
ト82の長さと概ね等しくすることもできる。3つ又はそ
れ以上の移植片70がコネクタ部材100によつて柔軟に連
結される場合、第1のコネクタ部材100は第1の管状部
材70Aの第2の端部73と第2の管状部材70Bの第1の端部
72との間に配置されることが好ましい。第2のコネクタ
部材100は次に第2の管状部材70Bの第2の端部73と第3
の管状部材70Cの第1の端部72との間に配置される。第
7図及び第8図に示すように、相互に連結された移植片
又はプロテーゼ70の間で必要な柔軟性を可能にするため
に、管状部材70の長手方向の軸線に対して第1及び第2
のコネクタ部材100を互いに角度的にずらすことができ
る。
1A図、第1B図、及び第3図乃至第4図について前記した
のと同じである。カテーテル83の伸張可能で膨張可能な
部分84は、当業者には容易に明らかなように、移植片又
はプロテーゼ70′の長さと合致するような寸法とされる
であろう。伸張可能で膨張可能な部分84の長さを除いて
は、カテーテル83、移植片又はプロテーゼ70′の送り方
法及びその後の制御可能な伸張及び変形は、前述と同じ
である。
内の所望の位置に送られつつあり、あるいは移植片又は
プロテーゼ70′はカテーテル83上に配置されておりそし
て動脈の曲がり部のような身体通路80の曲がった部分を
通過しているときに、とるであろう形状として示されて
いる。隣接した管状部材71又は移植片もしくはプロテー
ゼ70間に柔軟なコネクタ部材100を配置したので、移植
片又はプロテーゼ70′は、移植片又はプロテーゼ70′の
長手方向軸線に対して柔軟に曲がるか又は関節式に接合
する(articulate)ことができて、身体通路80内に見出
だされる湾曲部又は曲がり部を乗り越えることができ
る。コネクタ部材100は、移植片又はプロテーゼ70′の
長手方向軸線の回りのいかなる方向においても隣接管状
部材71の曲がり又は関節状になることを可能とすること
に留意すべきである。移植片又はプロテーゼ70′が伸張
しそして変形した形状状態にあるとき、移植片又はプロ
テーゼ70′の管状部材71は第1B図に示す形状を呈するで
あろう。
で、本発明はこれまでに説明しそして示された構造の詳
細、材料又は態様に厳密に限定されるものではないこと
が理解されるべきである。従って、本発明は特許請求の
範囲に記載の範囲により限定されるべきである。
及び該第1の端部と第2の端部との間に配置されている
壁表面を有し、該壁表面は実質的に均一な厚さを有して
おりそして該壁表面には複数のスロットが形成されてお
り、該スロットは各管状部材の長手方向軸線に実質的に
平行に配置されており;及び、 隣接管状部材間に配置されていて隣接管状部材を柔軟
に接続する単一のコネクタ部材、 ここで、該単一のコネクタ部材は管状部材の長手方向
軸線に対して実質的に平行な関係にてそして各管状部材
と同一平面に配置されており; とを備えて成り; 各管状部材は、管腔を持った身体通路内への前記管状
部材の管腔内送り込みを可能とする第1の直径を有し; 前記管状部材は、該管状部材の内側から半径方向外向
きに伸張させる力を加えられるとき、伸張しそして変形
した第2の直径を有し、該第2の直径は可変でありそし
て該管状部材に及ぼされる力の量に依存しており、それ
により、該管状部材は身体通路の管腔を伸張させるよう
に伸張及び変形することができる; ことを特徴とする伸張可能な管腔内脈管移植片。
面の薄肉の細長い棒状部材である上記1に記載の伸張可
能な管腔内移植片。
部と第2の管状部材の第1の端部との間に配置され、第
2のコネクタ部材が第2の管状部材の第2の端部と第3
の管状部材の第1の端部との間に配置され、第1及び第
2のコネクタ部材は、管状部材の長手方向軸線に対して
互いに角度的にずれている上記1に記載の伸張可能な管
腔内移植片。
及び該第1の端部と第2の端部との間に配置されている
壁表面を有し、該壁表面は実質的に均一な厚さを有して
おりそして該壁表面には複数のスロットが形成されてお
り、該スロットは各管状部材の長手方向軸線に実質的に
平行に配置されており;及び、 隣接管状部材間に配置されていて隣接管状部材を柔軟
に接続する単一のコネクタ部材、 ここで、該単一のコネクタ部材は管状部材の長手方向
軸線に対して実質的に平行な関係にてそして各管状部材
と同一平面に配置されており; とを備えて成り; 各管状部材は、管腔を持った身体通路内への前記管状
部材の管腔内送り込みを可能とする第1の直径を有し; 前記管状部材は、該管状部材の内側から半径方向外向
きに伸張させる力を加えられるとき、伸張しそして変形
した第2の直径を有し、該第2の直径は可変でありそし
て該管状部材に及ぼされる力の量に依存しており、それ
により、該管状部材は身体通路の管腔を伸張させるよう
に伸張及び変形することができる; ことを特徴とする身体通路のための伸張可能なプロテー
ゼ。
面の薄肉の細長い棒状部材である上記4に記載の伸張可
能なプロテーゼ。
部と第2の管状部材の第1の端部との間に配置され、第
2のコネクタ部材が第2の管状部材の第2の端部と第3
の管状部材の第1の端部との間に配置され、第1及び第
2のコネクタ部材は、管状部材の長手方向軸線に対して
互いに角度的にずれている上記4に記載の伸張可能なプ
ロテーゼ。
ゼを送り込むことを可能とする第1の直径を有する、身
体通路のための伸張可能な管腔内脈管移植片又はプロテ
ーゼの斜視図である。 第1B図は、身体通路内に配置されているときに伸張した
形状にある、第1A図の移植片又はプロテーゼの斜視図で
ある。 第2図は、第1B図の線2−2に沿って取ったプロテーゼ
の断面図である。 第3図は、第1A図に示された形状にあるプロテーゼ又は
管腔内脈管移植片を例示している、身体通路を管腔内で
補強するため、又は身体通路の管腔を伸張させるための
装置の断面図である。 第4図は、第1B図に示された形状にある管腔内脈管移植
片又はプロテーゼにより、身体通路を管腔内で補強する
ため、又は身体通路の管腔を伸張させるための装置の断
面図である。 第5図及び第6図は、前記移植片又はプロテーゼがコー
ティングを有している、身体通路のためのプロテーゼの
斜視図である。 第7図は、本発明に従う移植片又はプロテーゼの他の態
様の斜視図である。 第8図は、移植片が曲げられているか又は関節状になつ
ている、第7図の移植片の斜視図である。 図において、70……身体通路のための伸張可能な管腔内
脈管移植片又は伸張可能なプロテーゼ、71……管状部
材、72……第1の端部、73……第2の端部、74……壁表
面、75……細長い部材、77……接続部材、80……身体通
路、81……管腔、82……スロット、83……カテーテル、
84……カテーテル83の伸張可能で膨張可能な部分、85…
…取り付け及び保持するための手段、86……保持リング
部材、87……カテーテルチップ、88……慣用の血管形成
術バルーン、100……コネクタ部材、104……湾曲部又は
曲がり部、である。
Claims (2)
- 【請求項1】複数の薄肉管状部材、 ここで、該管状部材の各々は第1の端部、第2の端部及
び該第1の端部と第2の端部との間に配置されている壁
表面を有し、該壁表面は実質的に均一な厚さを有してお
りそして該壁表面には複数のスロットが形成されてお
り、該スロットは各管状部材の長手方向軸線に実質的に
平行に配置されており;及び、 隣接管状部材間に配置されていて隣接管状部材を柔軟に
接続する単一のコネクタ部材、 ここで、該単一のコネクタ部材は管状部材の長手方向軸
線に対して実質的に平行な関係にてそして各管状部材と
同一平面に配置されており; とを備えて成り; 各管状部材は、管腔を持った身体通路内への前記管状部
材の管腔内送り込みを可能とする第1の直径を有し; 前記管状部材は、該管状部材の内側から半径方向外向き
に伸張させる力を加えられるとき、伸張しそして変形し
た第2の直径を有し、該第2の直径は可変でありそして
該管状部材に及ぼされる力の量に依存しており、それに
より、該管状部材は身体通路の管腔を伸張させるように
伸張及び変形することができる; ことを特徴とする伸張可能な管腔内脈管移植片。 - 【請求項2】複数の薄肉管状部材、 ここで、該管状部材の各々は第1の端部、第2の端部及
び該第1の端部と第2の端部との間に配置されている壁
表面を有し、該壁表面は実質的に均一な厚さを有してお
りそして該壁表面には複数のスロットが形成されてお
り、該スロットは各管状部材の長手方向軸線に実質的に
平行に配置されており;及び、 隣接管状部材間に配置されていて隣接管状部材を柔軟に
接続する単一のコネクタ部材、 ここで、該単一のコネクタ部材は管状部材の長手方向軸
線に対して実質的に平行な関係にてそして各管状部材と
同一平面に配置されており; とを備えて成り; 各管状部材は、管腔を持った身体通路内への前記管状部
材の管腔内送り込みを可能とする第1の直径を有し; 前記管状部材は、該管状部材の内側から半径方向外向き
に伸張させる力を加えられるとき、伸張しそして変形し
た第2の直径を有し、該第2の直径は可変でありそして
該管状部材に及ぼされる力の量に依存しており、それに
より、該管状部材は身体通路の管腔を伸張させるように
伸張及び変形することができる; ことを特徴とする身体通路のための伸張可能なプロテー
ゼ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25311588A | 1988-10-04 | 1988-10-04 | |
US253115 | 1988-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02174859A JPH02174859A (ja) | 1990-07-06 |
JP2680901B2 true JP2680901B2 (ja) | 1997-11-19 |
Family
ID=22958929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1257987A Expired - Lifetime JP2680901B2 (ja) | 1988-10-04 | 1989-10-04 | 伸張可能な管腔内移植片 |
Country Status (12)
Country | Link |
---|---|
US (5) | US5195984A (ja) |
EP (1) | EP0364787B1 (ja) |
JP (1) | JP2680901B2 (ja) |
KR (1) | KR0142674B1 (ja) |
AT (1) | ATE72955T1 (ja) |
AU (1) | AU623438B2 (ja) |
BR (1) | BR8905130A (ja) |
CA (1) | CA1322628C (ja) |
DE (2) | DE68900929D1 (ja) |
ES (1) | ES2016233T3 (ja) |
GR (2) | GR900300138T1 (ja) |
ZA (1) | ZA897357B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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Cited By (3)
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JP2016512751A (ja) * | 2013-03-14 | 2016-05-09 | パルマズ サイエンティフィック, インコーポレイテッドPalmaz Scientific, Inc. | 一体型医療デバイス、その製造方法、およびその使用方法 |
US11291569B2 (en) | 2013-03-14 | 2022-04-05 | Vactronix Scientific, Llc. | Monolithic medical devices, methods of making and using the same |
USD888245S1 (en) | 2014-03-14 | 2020-06-23 | Vactronix Scientific, Llc | Stent device |
Also Published As
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---|---|
US20030195617A1 (en) | 2003-10-16 |
JPH02174859A (ja) | 1990-07-06 |
DE364787T1 (de) | 1990-12-20 |
US20020133221A1 (en) | 2002-09-19 |
US5902332A (en) | 1999-05-11 |
ES2016233T3 (es) | 1992-10-16 |
GR900300138T1 (en) | 1991-09-27 |
AU4248589A (en) | 1990-04-12 |
ATE72955T1 (de) | 1992-03-15 |
BR8905130A (pt) | 1990-05-15 |
EP0364787B1 (en) | 1992-03-04 |
KR900005943A (ko) | 1990-05-07 |
EP0364787A1 (en) | 1990-04-25 |
GR3003987T3 (ja) | 1993-03-16 |
ES2016233A4 (es) | 1990-11-01 |
US20060149353A1 (en) | 2006-07-06 |
AU623438B2 (en) | 1992-05-14 |
KR0142674B1 (ko) | 1998-07-01 |
CA1322628C (en) | 1993-10-05 |
US5195984A (en) | 1993-03-23 |
ZA897357B (en) | 1990-10-31 |
DE68900929D1 (de) | 1992-04-09 |
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