JP4780900B2 - ステント配送装置およびその製造方法 - Google Patents
ステント配送装置およびその製造方法 Download PDFInfo
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- 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
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- 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
-
- 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
- A61F2/92—Stents in the form of a rolled-up sheet expanding after insertion into the vessel, e.g. with a spiral shape in cross-section
-
- 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
-
- 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
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/97—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the outer sleeve being splittable
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- 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
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F2002/9665—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/4984—Retaining clearance for motion between assembled parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49909—Securing cup or tube between axially extending concentric annuli
- Y10T29/49913—Securing cup or tube between axially extending concentric annuli by constricting outer annulus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49927—Hollow body is axially joined cup or tube
- Y10T29/49929—Joined to rod
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49947—Assembling or joining by applying separate fastener
- Y10T29/49966—Assembling or joining by applying separate fastener with supplemental joining
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Description
前述の同軸管配送装置は、多くの種類の自己拡張式ステントに好適だが、軸線方向強度が限られている自己拡張式ステント、例えばストレッカーのステント−米国特許第5,366,50号に開示され、マサチューセッツ州ナティックのボストン・サイエンティフィック・コーポレーションが市販している、ニチノール製ワイヤで編成したステントには、あまり適していない。これは、この種のステントは、同軸管配送装置の組立て時に、および/または同軸管配送装置の拡張時に、外側カテーテル先端部がステント上を引出される場合に、軸線方向に圧縮されないように抵抗できないことが多いためである。
本発明の別の目的は、従来のステント配送装置が有する前記欠点の少なくとも幾つかが克服された既述の種類のステント得ることである。
本発明のさらに別の目的は、量産可能な最小限の部品を有し、かつ製造および使用が容易なステント配送装置を得ることである。
自己拡張式ステントは、好ましくは、半径方向軸線および長手方向軸線いずれの方向にもたわみ可能な、ニチノール製ワイヤによる編成メッシュであり、該ステントは、好ましくは、内側カテーテルに対し同軸的に配置され、長手方向に端から端まで延伸されている。
外側カテーテルは、完全な管、または、その長さの少なくとも一部に亘って先端部から中央部側に向って延在する長手方向スプリット(分割部)を有する管でよい。外側カテーテルが長手方向スプリットを有する場合、該スプリットは、外側カテーテルが、ステント拘束部材上を前進して固定された後、密封するのが好ましい。
別の実施例では、本発明のステント配送装置は、(a)内側カテーテルと、(b)該内側カテーテルの長さの少なくとも一部を取囲み、かつ内側カテーテルに対し軸線方向移動するようにされた外側カテーテルと、(c)前記内側と外側のカテーテルの間に配置された自己拡張式ステントとを含み、該自己拡張式ステントが、半径方向軸線と長手軸線の双方向にたわみ可能であり、前記外側カテーテルにより圧縮状態に維持される。
ステント配送装置は、好ましくは更に、前記自己拡張式ステントが、拡張時に、前記内側カテーテルに対し基端側へスライドするのを阻止する装置を含んでおり、該阻止装置が、さらに前記内側カテーテルに固定されたステント係止スリーブを含んでおり、該係止スリーブを前記自己拡張式ステントが取囲み、該係止スリーブが、該ステントを係止するようにされた外表面を有することで、前記自己拡張式ステントが、スリーブに対し基端側へスライドすることが阻止される。
前記ステントおよび内側カテーテルは、好ましくは同軸的に配置され、ステントは、長手軸線と半径方向軸線双方向にたわみ可能である。前記圧縮段階は、好ましくは前記ステントを前記内側カテーテルの長さにわたり長手方向に延伸させる作業を含んでいる。
前記螺旋状拘束部材は、好ましくは、低摩擦係数を有する強力な可撓性フィラメント状またはリボン状材料で作られる。好ましくは、前記方法は、さらに前記外側カテーテルを、軸線方向移動できるように前記編組管に機械式に結合する段階を含んでいる。外側カテーテルは、好ましくは、その長さの少なくとも一部にわたって延在する長手方向スリットを備えた管であり、該方法は、好ましくは更に、前記外側カテーテル位置決め段階の後に、前記長手方向スリットを密封する段階を含んでいる。
さらに別の実施例では、本発明の方法は、(a)内側カテーテルを得る段階と、(b)該内側カテーテルの周囲に、半径方向軸線および長手軸線双方向にたわみ可能な自己拡張式ステントを圧縮する段階と、(c)該自己拡張式ステントの周囲に外側カテーテルを位置決めする段階とを含み、該外側カテーテルが、前記内側カテーテルに対し軸線方向移動するようにされ、かつ前記自己拡張式ステントを圧縮状態に維持するように寸法付けられている。
前記方法は、好ましくは更に、前記圧縮段階の前に、前記内側カテーテルにステント係止スリーブ固定する段階を含んでおり、前記ステントが前記ステント係止スリーブを取囲み、該係止スリーブが、前記ステントを係止するようにされた外表面を有し、これにより前記ステントが係止スリーブに対し基端側スライドするのが阻止される。
配送装置11は、可撓性の内側カテーテル13を含んでいる。内側カテーテル13の基端部には、ハンドル15が設けられ、内側カテーテル13の先端部には、拡径された先端17が設けられている。内腔19は、内側カテーテル13を長手方向に貫通して延在し、体腔内の目標部位で配送装置11の位置決めに使用される案内ワイヤを受容するようにされている。
配送装置11は、さらにステント拘束スリーブ41(図6に別個に示す)を含んでいる。拘束スリーブ41は、同軸的にステント31を取囲み、ステント31を延伸状態に維持するようにほぼ寸法付けされている。この実施例では、拘束スリーブ41は編組管であり、該編組管は、好ましくは、低摩擦係数を有する強力な可撓性ワイヤまたはフィラメントで作られている、該ワイヤまたはフィラメントは、細いポリエステルまたは金属その他類似材料製である。
配送装置101は、配送装置11と大部分の点で等しいが、両装置の主な相違点は、配送装置11のスリーブ41が無い点である。その代わりに、配送装置101では、外側カテーテル51が、拡張時までステントを圧縮状態に維持する外側拘束機構として機能している。拡張時、外側カテーテル51が基端側へ移動するさい、ステント31が軸線方向に圧縮されないように、カテーテル51の内表面には潤滑剤(図示せず)が付与される。容易に分かるように、配送装置101の外側カテーテル51は、外側カテーテル51'およびジャケット61'に代えることができる。
次に、図12および図13を見ると、本発明の理論により構成されたステント配送装置の第4実施例が、それぞれ縦断面図と横断面図で示されており、該ステント配送装置は、全体が符号201で示されている。
配送装置201は、大部分の点で配送装置11に等しいが、両装置の主な相違点は、装置201が拘束スリーブ41の代わりに、ステント31の周囲に巻付けられた1条螺旋コイル形式のステント拘束部材を含む点である。該コイル203は、ワイヤ、糸、リボン、その他類似材料のいずれかで作られ、手動でまたは自動式巻付け機を用いてステント31の周囲に巻付ければよい。コイル203の先端部は、外側カテーテル51の先端部に結合される。拘束スリーブ41の代わりにコイル203を使用する一つの利点は、編組形式の多部材を使用するより、1条螺旋拘束部材を使用するほうが、特に自動式設備の点で、複雑さや費用が低減されることである。容易に理解されるように、配送装置201の外側カテーテル51は、外側カテーテル51'およびジャケット61に代えることができる。
次に、図14および図15を見ると、本発明の理論により構成されたステント配送装置の第5実施例が、それぞれ縦断面図と横断面図で示されており、該ステント配送装置は、全体が符号301で示されている。
配送装置301は、大部分の点で配送装置11に等しいが、両装置の主な相違点は、装置301は、可撓性外側カテーテル303を含む点である。該カテーテル303は、カテーテル51と似ているが、相違点は、カテーテル303が長手方向スリットを有するようには作られていない点である。カテーテル303の先端部は、拘束スリーブ41の先端部と機械式に結合されている。容易に分かるように、装置301のカテーテル51は、カテーテル51'およびジャケット61に代えることができる。
次に図16を見ると、本発明の理論により構成されたステント配送装置の第6実施例が、縦断面図で示されており、該ステント配送装置は、全体が符号401で示されている。
本発明の既述の実施例は、単に説明目的のものであり、当業者には、本発明の精神を逸脱することなしに、数多くの変化形や変更態様を造る事ができよう。それらすべての変化形および変更態様も、添付請求の範囲に定義された本発明の範囲に含まれるものである。
13 内側カテーテル
19 内腔
21 ステント係止スリーブ
31 ステント
41 ステント拘束スリーブ
51 外側カテーテル
52 接着剤
55 スリット
61 空隙充填ジャケット
203 コイル
403 編組スリーブ
405 可撓性外側カテーテル
Claims (23)
- ステント配送装置において、
(a)内側カテーテルと、
(b)該内側カテーテルの長さの少なくとも一部を取囲み、かつ該内側カテーテルに対し軸線方向移動するようにされた外側カテーテルと、
(c)前記内側カテーテルと前記外側カテーテルとの間に配置された自己拡張式ステントと、
(d)前記外側カテーテルと前記自己拡張式ステントとの間に配置され、該自己拡張式ステントを圧縮状態に維持するように寸法付けされ、前記自己拡張式ステントを取囲む編組管であるステント拘束部材とを含むステント配送装置。 - 前記編組管が、低摩擦係数を有する強力な可撓性フィラメント状材料で作られている請
求項1に記載されたステント配送装置。 - 前記編組管が、細いポリエステルのフィラメント材料で作られ、該材料が、強力かつ可撓性であって、低摩擦係数を有する請求項1に記載されたステント配送装置。
- 前記編組管が、細い金属ワイヤで作られ、該金属ワイヤが、強力かつ可撓性であって、低摩擦係数を有する請求項1に記載されたステント配送装置。
- 前記編組管が、軸線方向移動のため、前記外側カテーテルに機械式に結合されている、請求項1に記載されたステント配送装置。
- 前記自己拡張式ステントが、半径方向軸線および長手軸線双方向にたわみ可能なニチノール製ワイヤの編成メッシュである請求項1に記載されたステント配送装置。
- さらに、拡張時に前記自己拡張式ステントが、前記内側カテーテルに対して基端側へスライドするのを防止する装置を含む請求項1に記載されたステント配送装置。
- 前記防止装置が、前記内側カテーテルに固定されたステント係止スリーブを含み、該ステント係止スリーブが、前記自己拡張式ステントを係止するようにされた外表面に突起を備えており、それにより前記自己拡張式ステントが前記係止スリーブに対し基端側へスライドすることが防止されるようになっている請求項7に記載されたステント配送装置。
- さらに、前記内側カテーテルに固定されたステント係止スリーブが含まれ、該ステント係止スリーブを前記自己拡張式ステントが取囲み、前記ステント係止スリーブが前記自己拡張式ステントを係止するようにされた外表面を有し、これにより前記ステントが前記係止スリーブに対し基端側にスライドすることが防止されるようになっている請求項1に記載されたステント配送装置。
- 前記自己拡張式ステントが、半径方向軸線および長手軸線双方向にたわみ可能なニチノール製ワイヤの編成メッシュであり、前記編組管が、軸線方向移動のため、前記外側カテーテルに機械式に結合されている請求項9に記載されたステント配送装置。
- さらに、スリーブ保持部材が含まれ、該スリーブ保持部材が、前記内側カテーテルに固定され、かつ前記ステント拘束部材の基端部に固定されている請求項1に記載されたステント配送装置。
- ステント配送装置を製造する方法において、
前記方法が、
(a)内側カテーテルを得る段階と、
(b)該内側カテーテルの周囲に自己拡張式ステントを圧縮する段階と、
(c)前記自己拡張式ステントが圧縮状態にある間に、前記内側カテーテルと
自己拡張式ステントとの周囲に、該ステントを圧縮状態に維持するように寸法づけされた編組管を位置決めする段階と、
(d)前記編組管の周囲に、前記内側カテーテルに対し軸線方向移動可能にされた外側カテーテルを位置決めする段階とを含む、ステント配送装置の製造方法。 - 前記編組管を位置決めする段階が、前記自己拡張式ステントと前記内側カテーテルとの周囲に編組管を形成する作業を含む請求項12に記載されたステント配送装置の製造方法
。 - さらに、前記外側カテーテルを、軸線方向移動のため、前記編組管に機械式に結合する段階を含む請求項13に記載されたステント配送装置の製造方法。
- 前記内側カテーテルと前記自己拡張式ステントとが同軸的に配置され、しかも、該ステントが長手軸線およびラジアル軸線双方向にたわみ可能であり、かつまた前記圧縮段階が、前記自己拡張式ステントを長手方向に延伸する作業を含む請求項14に記載されたステント配送装置の製造方法。
- 前記外側カテーテルが完全な管であり、前記外側カテーテル位置決め段階が、前記編組管周囲に前記外側カテーテルをスライドさせる作業を含む請求項15に記載されたステント配送装置の製造方法。
- 前記外側カテーテルが、その長さの少なくとも一部にわたって延在する長手方向スリットを備え、前記方法が、さらに、前記外側カテーテル位置決め段階後、前記長手方向スリットを密封する段階を含む請求項15に記載されたステント配送装置の製造方法。
- 前記編組管位置決め段階が、前以て形成された編組管を前記内側カテーテルおよび前記自己拡張式ステント周囲にスライドさせる作業を含む請求項12に記載されたステント配送装置の製造方法。
- さらに、前記外側カテーテルを、軸線方向移動のため、前記編組管と機械式に結合する作業を含む請求項18に記載されたステント配送装置の製造方法。
- 前記内側カテーテルと前記自己拡張式ステントとが同軸配置され、しかも該ステントが、長手軸線およびラジアル軸線双方向にたわみ可能であり、かつまた前記圧縮段階が前記ステントを長手方向に延伸する作業を含む請求項19に記載されたステント配送装置の製造方法。
- 前記外側カテーテルが完全な管である請求項20に記載されたステント配送装置の製造方法。
- さらに、前記外側カテーテル位置決め段階前に、編組管保持スリーブを前記内側カテーテルに固定する段階と、前記編組管基端部を前記編組管保持スリーブに固定する段階とを含む請求項21に記載されたステント配送装置の製造方法。
- さらに、前記圧縮段階前に、ステント係止スリーブを前記内側カテーテルに固定する段階を含み、前記自己拡張式ステントが、前記ステント係止スリーブを取囲んでおり、該係止スリーブが、前記ステントを係止するようにされた外表面を有していることで、前記ステントが前記係止スリーブに対し基端側にスライドすることが防止される請求項20に記載されたステント配送装置の製造方法。
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DE60211475D1 (de) | 2006-06-22 |
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CA2434830A1 (en) | 2002-07-25 |
US20070043430A1 (en) | 2007-02-22 |
US20020099435A1 (en) | 2002-07-25 |
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