JP6806090B2 - 合成樹脂ステント - Google Patents
合成樹脂ステント Download PDFInfo
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- JP6806090B2 JP6806090B2 JP2017562898A JP2017562898A JP6806090B2 JP 6806090 B2 JP6806090 B2 JP 6806090B2 JP 2017562898 A JP2017562898 A JP 2017562898A JP 2017562898 A JP2017562898 A JP 2017562898A JP 6806090 B2 JP6806090 B2 JP 6806090B2
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Images
Classifications
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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
- A61F2/82—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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
-
- 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
-
- 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
-
- 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
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
-
- 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
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
-
- 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
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/001—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting a diameter
Landscapes
- 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)
- Orthopedics, Nursing, And Contraception (AREA)
- Surgical Instruments (AREA)
Description
本実施形態の合成樹脂ステントは、生分解性繊維により構成される生分解性ステント1であり、図1及び図2に示すように、ステント本体部2と、拡径機構3と、を備える。
本実施形態では、延出部22は、延出長さの短い第1延出部221及びこの第1延出部221よりも延出長さの長い第2延出部222と、を備える。そして、第1延出部221及び第2延出部222は、周方向に所定間隔をあけて交互に、それぞれ複数配置されている。また、本実施形態では、延出部22は、筒状部21の一端側のみに配置される。
また、第1延出部221の延出長さは、好ましくは2mm〜7mmであり、第2延出部222の延出長さは、好ましくは7mm〜30mmである。
リング状部材31は、ステント本体部2の先端側に取り付けられる。より具体的には、リング状部材31は、ステント本体部2における延出部22が配置されていない他端側の端部近傍に取り付けられる。リング状部材31は、合成樹脂繊維又は生分解性繊維により構成され、合成樹脂繊維又は生分解性繊維の両端部がステント本体部2(筒状部21)を構成する繊維に結び付けられることでリング状に形成される。リング状部材31におけるステント本体部2への取り付け位置は、ステント本体部2を好適に拡径させる観点から、ステント本体部2の先端部に近い位置であることが好ましい。
より詳細には、本実施形態では、紐状部材32の一端部は、図3に示すように、第1延出部221の先端部に結び付けられて接続される。そして、紐状部材32は、第1延出部221との接続部からステント本体部2の外側を通り、この第1延出部221の近傍において、ステント本体部2(筒状部21)の網目を通って筒状部21の内側に入る(図3のA部分参照)。
生分解性ステント1を消化管等の狭窄部に接近させる方法としては、内視鏡を用いる方法が挙げられる。この方法では、デリバリーシステムと呼ばれる細管状の部材に縮径させた生分解性ステント1を収納し、このデリバリーシステムを鉗子口から内視鏡の内部に挿入して狭窄部に接近させる。尚、図4〜図7においては、デリバリーシステムを省略して生分解性ステント1の動作を説明する。
尚、本明細書において、リング状部材とは、ステント本体部2に取り付けられた状態において係止部33に係止可能に、全体として環状に形成された部材を示す。
また、係止部を、ループ状に形成された延出部と、この延出部のループ状部分を塞ぐように配置された膜状部材(いずれも図示せず)により構成してもよい。また、係止部を、ループ部を含まずに構成してもよい。
また、紐状部材は、網目部分を貫通させずに構成してもよい。即ち、紐状部材を、ステント本体部の内側のみ、又は外側のみを通るように構成してもよい。この場合、紐状部材を引っ張る場合に、紐状部材をステント本体部に引っかかりにくくできる。
2 ステント本体部
3 拡径機構
31 リング状部材
32 紐状部材
33 係止部
Claims (4)
- 合成樹脂製の繊維によって円筒状に形成され、縮径した状態から拡径した状態に変形可能なステント本体部と、
前記ステント本体部に接続され且つ前記ステント本体部を縮径した状態から拡径した状態に変形させると共に該ステント本体部を拡径した状態に維持する拡径機構と、を備える合成樹脂ステントであって、
前記拡径機構は、
前記ステント本体部の先端側に取り付けられるリング状部材と、
前記ステント本体部の基端側に一端部が接続されると共に前記リング状部材に挿通され、他端側が前記ステント本体部の基端側に延びる紐状部材と、
前記紐状部材と前記ステント本体部との接続部分又は該接続部分の近傍に配置され、前記リング状部材を係止可能な係止部と、を備え、
前記ステント本体部が縮径した状態において、前記紐状部材を前記ステント本体部の基端側に引っ張ることにより、前記リング状部材と前記係止部とが近接する方向に移動すると共に該リング状部材と該係止部とが係合して前記ステント本体部を拡径した状態に維持する合成樹脂ステント。 - 前記係止部は、前記ステント本体部を構成する繊維をループ状に形成することにより構成され、
前記紐状部材の一端部は、前記ループ状に形成された係止部の先端部に接続される請求項1に記載の合成樹脂ステント。 - 前記リング状部材は、前記ステント本体部の内面側に配置され、
前記紐状部材は、
前記リング状部材側において前記ステント本体部の内側を延びる部分と、
前記係止部の近傍において前記ステント本体部を挿通する部分と、
前記ステント本体部を挿通する部分よりも前記係止部側において該ステント本体部の外側を延びる部分と、を有する請求項1又は2に記載の合成樹脂ステント。 - 前記拡径機構は、前記ステント本体部の周方向に等間隔で複数配置される請求項1〜3のいずれかに記載の合成樹脂ステント。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016008218 | 2016-01-19 | ||
JP2016008218 | 2016-01-19 | ||
PCT/JP2017/001787 WO2017126620A1 (ja) | 2016-01-19 | 2017-01-19 | 合成樹脂ステント |
Publications (2)
Publication Number | Publication Date |
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JPWO2017126620A1 JPWO2017126620A1 (ja) | 2018-11-08 |
JP6806090B2 true JP6806090B2 (ja) | 2021-01-06 |
Family
ID=59362232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2017562898A Active JP6806090B2 (ja) | 2016-01-19 | 2017-01-19 | 合成樹脂ステント |
Country Status (5)
Country | Link |
---|---|
US (1) | US10744010B2 (ja) |
EP (1) | EP3406227B1 (ja) |
JP (1) | JP6806090B2 (ja) |
CN (1) | CN108472146B (ja) |
WO (1) | WO2017126620A1 (ja) |
Families Citing this family (9)
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US10561509B2 (en) | 2013-03-13 | 2020-02-18 | DePuy Synthes Products, Inc. | Braided stent with expansion ring and method of delivery |
US10206796B2 (en) | 2014-08-27 | 2019-02-19 | DePuy Synthes Products, Inc. | Multi-strand implant with enhanced radiopacity |
US10076428B2 (en) | 2016-08-25 | 2018-09-18 | DePuy Synthes Products, Inc. | Expansion ring for a braided stent |
US10292851B2 (en) | 2016-09-30 | 2019-05-21 | DePuy Synthes Products, Inc. | Self-expanding device delivery apparatus with dual function bump |
US10182927B2 (en) * | 2016-10-21 | 2019-01-22 | DePuy Synthes Products, Inc. | Expansion ring for a braided stent |
AU2019204522A1 (en) | 2018-07-30 | 2020-02-13 | DePuy Synthes Products, Inc. | Systems and methods of manufacturing and using an expansion ring |
US10278848B1 (en) | 2018-08-06 | 2019-05-07 | DePuy Synthes Products, Inc. | Stent delivery with expansion assisting delivery wire |
US10456280B1 (en) | 2018-08-06 | 2019-10-29 | DePuy Synthes Products, Inc. | Systems and methods of using a braided implant |
US11039944B2 (en) | 2018-12-27 | 2021-06-22 | DePuy Synthes Products, Inc. | Braided stent system with one or more expansion rings |
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US5984957A (en) * | 1997-08-12 | 1999-11-16 | Schneider (Usa) Inc | Radially expanded prostheses with axial diameter control |
JP4087951B2 (ja) * | 1998-05-15 | 2008-05-21 | テルモ株式会社 | 管腔内留置物および管腔内留置物セット |
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US6569191B1 (en) | 2000-07-27 | 2003-05-27 | Bionx Implants, Inc. | Self-expanding stent with enhanced radial expansion and shape memory |
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JP2009160079A (ja) | 2007-12-28 | 2009-07-23 | Gunze Ltd | 生体管路ステント |
US9326870B2 (en) | 2010-04-23 | 2016-05-03 | Medtronic Vascular, Inc. | Biodegradable stent having non-biodegradable end portions and mechanisms for increased stent hoop strength |
WO2016035757A1 (ja) * | 2014-09-01 | 2016-03-10 | 株式会社ジェイ・エム・エス | 合成樹脂ステント |
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