WO2019188636A1 - ステント - Google Patents

ステント Download PDF

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Publication number
WO2019188636A1
WO2019188636A1 PCT/JP2019/011636 JP2019011636W WO2019188636A1 WO 2019188636 A1 WO2019188636 A1 WO 2019188636A1 JP 2019011636 W JP2019011636 W JP 2019011636W WO 2019188636 A1 WO2019188636 A1 WO 2019188636A1
Authority
WO
WIPO (PCT)
Prior art keywords
skeleton
stent
axial direction
sheath
extension
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.)
Ceased
Application number
PCT/JP2019/011636
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
白濱　憲昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SB Kawasumi Laboratories Inc
Original Assignee
Kawasumi Laboratories Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasumi Laboratories Inc filed Critical Kawasumi Laboratories Inc
Priority to JP2020510769A priority Critical patent/JP7409585B2/ja
Priority to US17/041,480 priority patent/US11844711B2/en
Publication of WO2019188636A1 publication Critical patent/WO2019188636A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
    • 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
    • A61F2/82—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
    • A61F2/89—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
    • 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 sheets 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 sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • 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
    • A61F2002/041—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
    • A61F2002/044—Oesophagi or esophagi or gullets
    • 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
    • A61F2002/045—Stomach, intestines
    • 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
    • A61F2210/0057—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof stretchable
    • 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
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0054—V-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
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0048—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability

Definitions

  • the present invention relates to a stent.
  • stents are known that are placed in a stenosis or occlusion occurring in a biological lumen such as a blood vessel, esophagus, bile duct, large intestine, etc., and expand the lesion site to maintain the patency of the biological lumen.
  • a covered stent in which the side surface of the stent body is covered with a cover is also known.
  • Such a stent is housed in a contracted state in which the skeleton is contracted in the sheath, and after being transported to the affected part (for example, a narrowed part or an obstructed part of the digestive tract), is released from the sheath and the skeleton is It is transformed into an expanded state.
  • the stent expands in the axial direction in a contracted state accommodated in the sheath. For this reason, the contact area between the outer surface portion of the stent and the inner surface portion of the sheath becomes relatively large, and the resistance when discharging from the sheath is increased.
  • the stent when releasing from the sheath, the stent further extends in the axial direction, and there is a possibility that the release from the sheath cannot be performed properly.
  • the axial shortening rate (shortening) of the skeleton when released from the sheath to be in an expanded state increases, and it becomes difficult to place the stent accurately at a desired placement site in the living body lumen.
  • An object of the present invention is to provide a stent that can appropriately release from the sheath and can reduce the axial shortening rate in the expanded state.
  • the stent of the present invention comprises A stent that is released from the sheath and placed in the body lumen, A cylindrical skeleton that can be extended in the axial direction and can be expanded and contracted in the radial direction substantially orthogonal to the axial direction; An extension restricting part for restricting the extension of the skeleton part in the axial direction; With The extension regulating portion is It is made of a material different from that of the skeleton part, and is characterized by restricting the extension of the skeleton part in the axial direction when the skeleton part is contracted in the radial direction by being accommodated in the sheath.
  • the discharge from the sheath can be performed properly, and the axial shortening rate in the expanded state can be reduced.
  • FIG. 1 is a perspective view showing a schematic configuration of a covered stent according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line AA of the covered stent of FIG. 3A to 3C are views for explaining the accommodation state of the covered stent of FIG.
  • FIG. 1 is a perspective view illustrating a schematic configuration of a covered stent 100 according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line AA of the covered stent 100 of FIG.
  • the obstruction stenosis
  • the digestive tract eg, large intestine; not shown
  • An example of the covered stent 100 used will be described.
  • the covered stent 100 includes a stent main body 1 and an extension regulating portion 2 that regulates the extension of the skeleton 11 (described later) of the stent main body 1 in the axial direction.
  • the stent main body 1 defines, for example, a cylindrical passage through which a substance flowing through the digestive tract can pass, and is a film portion fixed so as to cover the skeleton portion 11, the skeleton portion 11, and the extension regulating portion 2. 12.
  • the thing which flows through the digestive tract is, for example, food immediately after ingestion that has not been digested at all, food that has been decomposed by passing through the digestive tract, and food that has not been digested even through the digestive tract (For example, feces etc.) etc., the state of a substance is not ask
  • the skeleton part 11 is formed, for example, by winding a thin metal wire (wire) 11a in a spiral shape. Specifically, for example, the skeleton part 11 is wound spirally while bending so that a metal wire 11a having a circular or elliptical cross-sectional shape is alternately formed with a crest and a trough.
  • the skeleton part 11 is capable of self-expanding from a contracted state contracted radially inward substantially orthogonal to the axial direction to an expanded state in which a cylindrical passage is defined by expanding radially outward.
  • the skeleton portion 11 extends in the axial direction while being contracted radially inward, and is shortened in the axial direction while being expanded radially outward.
  • the inner surface of the digestive tract is pressed by the outer surface of the covered stent 100.
  • the skeleton part 11 can be deformed according to the external force applied from the outer surface side. ing.
  • the skeleton part 11 is formed in a cylindrical shape that can be expanded in the axial direction and can be expanded and contracted in the radial direction substantially orthogonal to the axial direction.
  • Examples of the material constituting the metal thin wire 11a of the skeleton part 11 include known metals or metal alloys represented by Ni—Ti alloy (Nitinol), titanium alloy, and stainless steel. Further, for example, the material of the skeleton part 11 (Nitinol or the like), the cross-sectional area and the cross-sectional shape of the metal thin wire 11a of the skeleton part 11 (a circular wire material such as a wire or a square wire material by laser cutting), the skeleton part 11 in the circumferential direction The number of folds and the fold shape (the number of ridges and the shape of the ridge portions), the helical pitch of the skeleton portion 11 in the axial direction (the amount of skeleton per unit length of the covered stent 100), etc. However, a detailed description thereof is omitted here.
  • the film part 12 is arranged in a space formed by the fine metal wires 11 a constituting the skeleton part 11.
  • the coating portion 12 is fixed so as to cover the skeleton portion 11 from the outer surface side, and specifically, is fixed so as to cover the skeleton portion 11 and the extension regulating portion 2 to define the above-described cylindrical passage.
  • the film part 12 may cover the skeleton part 11 so as to be sandwiched from the outer surface side and the inner surface side, or may cover the skeleton part 11 only from the outer surface side, or may cover only from the inner surface side.
  • fluororesins such as a silicon resin and PTFE (polytetrafluoroethylene)
  • polyester resins such as a polyethylene terephthalate, etc. are mentioned, for example.
  • the extension restricting portion 2 is provided along the axial direction of the skeleton portion 11.
  • the extension restricting portion 2 is fixed (for example, bonded) on the outer surface side of the skeleton portion 11 so as to extend to both ends of the skeleton portion 11 in the axial direction, and the widths substantially perpendicular to the axial direction are substantially equal. It is a long member.
  • extension control parts 2 are arrange
  • the elongation restricting portion 2 is formed of a material different from that of the skeleton portion 11.
  • the elongation restricting portion 2 is composed of at least one of a biocompatible yarn (for example, polyester yarn) and a fabric (woven fabric (fabric) or knitted fabric), but is an example and is not limited thereto. It is not a thing. That is, it is preferable that the elongation restricting portion 2 has at least a strength capable of restricting the elongation in the axial direction of the skeleton portion 11 and further has a strength that does not impair the expandability of the covered stent 100 in the radial direction. .
  • the covered stent 100 having the above-described configuration is accommodated in a contracted state in which the skeleton portion 11 is contracted in a sheath 200 (see FIG. 3B). And the skeleton 11 is expanded into an expanded state.
  • FIG. 3A is a diagram schematically illustrating the covered stent 100
  • FIG. 3B is a diagram schematically illustrating a state where the covered stent 100 is accommodated in the sheath 200
  • FIG. 3C is a diagram schematically illustrating a state in which the stent 300 that does not include the elongation restricting portion 2 is accommodated in the sheath 200.
  • the covered stent 100 is contracted radially inward and extended in the axial direction in a state of being accommodated in the sheath 200.
  • the extension restricting portion 2 restricts the extension of the skeleton portion 11 in the axial direction.
  • the covered stent 100 having the extension restricting portion 2 has a length L1 in the axial direction in a state of being accommodated in the sheath 200, but the stent 300 not having the extension restricting portion 2 is similarly applied to the sheath 200. It becomes smaller than the length L2 in the axial direction when accommodated (see FIGS. 3B and 3C).
  • the covered stent 100 is a covered stent 100 that is released from the sheath 200 and is placed in a living body lumen (for example, a digestive tract or the like), and is extendable in the axial direction.
  • a living body lumen for example, a digestive tract or the like
  • a cylindrical skeleton portion 11 that can be expanded and contracted in a radial direction substantially perpendicular to the axial direction, and an elongation regulating portion 2 that regulates the elongation of the skeleton portion 11 in the axial direction (for example, a biocompatible thread or fabric);
  • the elongation restricting portion 2 is formed of a material different from that of the skeleton portion 11, and is restricted from extending in the axial direction of the skeleton portion 11 when accommodated in the sheath 200 and contracting the skeleton portion 11 in the radial direction. Is configured to do.
  • the extension stent 2 is restricted from extending in the axial direction by the extension restriction part 2, and the covered stent 100 is in the sheath 200.
  • the axial length L1 of the covered stent 100 is made relatively small with respect to the stent 300 that does not include the elongation restricting portion 2, and the contact area between the outer surface portion of the covered stent 100 and the inner surface portion of the sheath 200 is increased. It can be made relatively small, and the resistance when discharging from the sheath 200 can be reduced.
  • the extension restricting portion 2 is also provided when the covered stent 100 is displaced relative to the sheath 200 in the axial direction. Regulates the axial extension of the skeleton 11. That is, for example, when the covered stent 100 is released by pulling the sheath 200 toward the proximal side of the covered stent 100, depending on the frictional resistance between the inner surface portion of the sheath 200 and the outer surface portion of the covered stent 100, the covered stent 100 There is a possibility that the resistance when 100 is further extended in the axial direction and discharged is increased. At this time, by restricting the extension of the skeleton part 11 in the axial direction by the extension restricting part 2, it is possible to suppress the covered stent 100 from further extending in the axial direction and to further reduce the resistance at the time of release. Can do.
  • the invention made by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.
  • the covered stent 100 having the coating portion 12 is illustrated, but the example is not limited to this, and whether or not the coating portion 12 is provided can be arbitrarily changed as appropriate. That is, although illustration is omitted, the stent according to the present invention may have a configuration in which the skeleton part 11 is not covered with the coating part 12 (bare stent).
  • membrane part 12 might cover the expansion
  • control is carried out to the outer side of the film
  • the part 2 may be provided.
  • the covered stent 100 can be placed so as to bring the tube wall of the living body lumen into contact with the extension restricting portion 2, and the cells of the tube wall can be engulfed by the extension restricting portion 2.
  • extension control part 2 can also be functioned as a suppression means that the covered stent 100 will shift
  • the thing which consists of cloth was illustrated as the expansion
  • the covered stent 100 when the covered stent 100 is accommodated in the sheath 200 and the skeleton part 11 is contracted in the radial direction, the extension of the skeleton part 11 in the axial direction can be appropriately regulated.
  • the covered stent 100 can be properly discharged from the tube, and the axial shortening rate in the expanded state can be reduced.
  • extension control part 2 illustrated what was provided in the outer surface side of the frame
  • skeleton part 11 It may be provided, and may be provided on both the outer surface side and the inner surface side of the skeleton part 11.
  • the skeleton part 11 may be formed, for example, by laser processing (laser cutting) a single metal pipe (for example, a pipe made of a Ni—Ti alloy).
  • the covered stent 100 indwelled and used in a digestive tract was illustrated, it is an example and it is not restricted to this, For example, biological lumens and blood vessels other than a digestive system lumen It is also possible to use a stent that is indwelled.

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)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
PCT/JP2019/011636 2018-03-29 2019-03-20 ステント Ceased WO2019188636A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020510769A JP7409585B2 (ja) 2018-03-29 2019-03-20 ステント
US17/041,480 US11844711B2 (en) 2018-03-29 2019-03-20 Stent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-065755 2018-03-29
JP2018065755 2018-03-29

Publications (1)

Publication Number Publication Date
WO2019188636A1 true WO2019188636A1 (ja) 2019-10-03

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US (1) US11844711B2 (https=)
JP (1) JP7409585B2 (https=)
WO (1) WO2019188636A1 (https=)

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Publication number Priority date Publication date Assignee Title
US11844711B2 (en) 2018-03-29 2023-12-19 SB-Kawasumi Laboratories, Inc. Stent

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WO2025175146A1 (en) * 2024-02-15 2025-08-21 Microvention, Inc. Biodegradable stents, methods of manufacture, and uses thereof

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JP2004517648A (ja) * 2000-07-27 2004-06-17 バイオンクス インプランツ インコーポレイテッド 向上した放射方向の拡張性並びに形状記憶性を有する自己拡張型ステント
JP2009160079A (ja) * 2007-12-28 2009-07-23 Gunze Ltd 生体管路ステント
JP2010525898A (ja) * 2007-05-04 2010-07-29 キプス ベイ メディカル、インコーポレイテッド コンプライアンスを有する血管グラフト
US20110264186A1 (en) * 2010-04-23 2011-10-27 Medtronic Vascular, Inc. Biodegradable Stent Having Non-Biodegradable End Portions and Mechanisms for Increased Stent Hoop Strength
US20170296325A1 (en) * 2016-04-18 2017-10-19 Medtronic Vascular, Inc. Stent-graft prosthesis and method of manufacture

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JP2001327609A (ja) * 2000-05-19 2001-11-27 Terumo Corp 生体内留置用ステント
US20050129731A1 (en) * 2003-11-03 2005-06-16 Roland Horres Biocompatible, biostable coating of medical surfaces
EP2063824B1 (en) * 2006-09-07 2020-10-28 Angiomed GmbH & Co. Medizintechnik KG Helical implant having different ends
JP7409585B2 (ja) 2018-03-29 2024-01-09 Ｓｂカワスミ株式会社 ステント

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Publication number Priority date Publication date Assignee Title
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