[go: up one dir, main page]

WO2025046613A1 - Endoprothèse extensible à liaisons de raccord flexibles - Google Patents

Endoprothèse extensible à liaisons de raccord flexibles Download PDF

Info

Publication number
WO2025046613A1
WO2025046613A1 PCT/IN2024/051552 IN2024051552W WO2025046613A1 WO 2025046613 A1 WO2025046613 A1 WO 2025046613A1 IN 2024051552 W IN2024051552 W IN 2024051552W WO 2025046613 A1 WO2025046613 A1 WO 2025046613A1
Authority
WO
WIPO (PCT)
Prior art keywords
stent
pair
links
circular structure
circular
Prior art date
Application number
PCT/IN2024/051552
Other languages
English (en)
Inventor
Debasish Pradhan
Sandeep Jagannath Walde
Original Assignee
Biorad Medisys Private Limited
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 Biorad Medisys Private Limited filed Critical Biorad Medisys Private Limited
Publication of WO2025046613A1 publication Critical patent/WO2025046613A1/fr

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 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
    • A61F2/82—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
    • 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
    • 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
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91566—Adjacent bands being connected to each other connected trough to trough
    • 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
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
    • 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
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers

Definitions

  • the present invention generally relates to medical devices for supporting, maintaining, or repairing a lumen, passageway or opening in a living body.
  • the invention relates to particular intravascular stents, which are adapted to be implanted into a patient's body lumen, such as a blood vessel or coronary artery, to maintain the patency thereof.
  • Carotid artery stenosis is a condition where the carotid arteries, which supply blood to the brain, become narrowed or blocked due to plaque buildup. This can reduce blood flow to the brain and increase the risk of stroke.
  • One of the treatments for carotid artery stenosis is carotid stenting which involves inserting a mesh tube (stent) into the vessel to serve as a scaffold that helps prevent the artery from narrowing again.
  • a stent is a well-known medical scaffolding device that is often tubular that is used for maintaining the patency of a large variety of lumens of the human body. Modern intravascular stents are available in balloonexpandable and self-expanding varieties.
  • stents have been made by different techniques, including forming from wire and machining from a hollow tube. Such machining can be done by photo-chemical etching, laser-cutting, stamping, piercing, or other material-removal processes. Other manufacturing techniques have been proposed, such as vacuum or chemical deposition of material or forming a tube of machined flat material, but those “exotic” methods have not been widely commercialized.
  • an implantable prosthesis device that maintains the patency of a vessel with the ability to adapt to the tortuous anatomy of the host by being highly flexible and highly durable w'hile being loadable into a delivery catheter of sufficiently small profile and easily deliverable to a target site in the vessel or duct by having the ability to navigate tortuous ducts or vessels.
  • This invention is therefore directed towards providing an effective vascular implant, which is relatively simple in design and structure, and is highly effective for its intended purpose.
  • Embodiment of the present disclosure present technological improvements as solutions to one or more of the above-mentioned technical problems recognized by the inventor(s) in conventional systems.
  • a stent comprises a plurality of circular structure.
  • the plurality of circular structure comprises a first pair of structure and a second pair of structure.
  • the first pair of structure and the second pair of structure is made up of a plurality of peaks and a plurality of valleys to form undulating pattern.
  • the undulating pattern of the first pair of structure and the second pair of structure is mirror to each other mirror.
  • the plurality of circular structure further comprises a plurality of first links.
  • the plurality of first links are coupled in between the plurality of the valleys of the first pair of structure and the second pair of structure.
  • the plurality of circular structure further comprises a plurality of second links.
  • the plurality of second links are configured to couple a first pair of structure and second pair of structure.
  • the plurality of second links (110) is a U-shaped structure.
  • the plurality of second links (110) is straight structure.
  • the plurality of circular structure are coupled with the plurality of the second links to form a radially expandable stent.
  • Fig 1 illustrates a illustrates a flat layout view of stent in accordance with an exemplary embodiment of the present disclosure
  • Fig 2 illustrates a illustrates a flat layout view of stent having in accordance with another embodiment of the present disclosure
  • Fig. 3 illustrates a perspective view of a stent in accordance with another embodiment of the present disclosure
  • a number relates to an item identified by a line linking the number to the item.
  • the number is used to identify a general item at which the arrow is pointing.
  • the present disclosure provides technical solutions to the technical problems identified in the prior art.
  • the great majority of stents delivered trans luminally and percutaneously to a stenting site in a human body are made of a biologically compatible material which is a metal.
  • Many stents are made of stainless steel, and many others are made of nickel titanium shape memory alloy.
  • the nickel titanium stents are invariably self-expanding stents that utilise a shape memory effect for moving between a radially compact transluminal delivery disposition and a radially larger stenting disposition after placement in the body.
  • conventional stents may have drawbacks such as low flexibility, high radial force, poor wall apposition, and susceptibility to fatigue fracture.
  • Fatigue fracture is a failure mode of stents that occurs when they are subjected to repeated mechanical stress cycles at the deployment site in the body lumen. Fatigue fracture can compromise the structural integrity and functionality of the stent and lead to adverse outcomes such as restenosis, thrombosis, or embolization.
  • Self-expanding stents are usually manufactured in a ready-to-use compressed form within a catheter-based sheath that functions as a delivery system.
  • stents are implanted within a passageway by positioning the stent within the area to be treated and then expanding the stent from a compressed diameter to an expanded diameter.
  • the ability of the stent to expand from a compressed diameter makes it possible to thread the stent to the area to be treated through various narrow body passageways while the stent is in the compressed diameter.
  • the tubular support structure of the stent contacts and radially supports the inner wall of the passageway.
  • the present invention is related to a stent.
  • a stent comprising a plurality of circular structure.
  • the width of the plurality of the circular structure ranges between 40 mm to 80 mm.
  • the plurality of circular structure comprises a first pair of structure and a second pair of structure.
  • the first pair of structure and the second pair of structure is made up of a plurality of peaks and a plurality of valleys to form undulating pattern.
  • the undulating pattern comprises a thickness range between 0.8 mm to 2 mm.
  • the undulating pattern of the first pair of structure and the second pair of structure is mirror to each other mirror.
  • the plurality of circular structure further comprises a plurality of first links.
  • the plurality of first links are coupled in between the plurality of the valleys of the first pair of structure and the second pair of structure.
  • the plurality of circular structure further comprises a plurality of second links.
  • the plurality of second links are configured to couple a first pair of structure and second pair of structure
  • the plurality of circular structure are coupled with the plurality of the second links to form a radially expandable stent.
  • the stent comprises a first dimeter in contracted condition.
  • the first diameter of the stent in contracted condition is varies from 3 mm to 5 mm.
  • the stent comprises a second dimeter in expanded condition.
  • the second diameter of the stent in expandable condition is varies from 10 mm to 14 mm.
  • a high visibility radiopaque tantalum markers are provided at the proximal and distal end of the stent.
  • the plurality of second links is a U-shaped structure. In another embodiment, the plurality of second links is straight structure.
  • the present invention provides a vascular implant that has high resistance to fracture when mechanically cycled at a site in a body lumen.
  • the present invention provides a stent having a high degree of flexibility so that it can be advanced through tortuous passageways and can be readily expanded. [0032] The invention provides a stent that exhibits good strength while having the ability to follow the contour of the vessel within which it is implanted.
  • the present invention proposes a fatigue fracture resistant vascular implant, such as a self-expanding stent designed to address the limitations of existing stent designs.
  • the stent is constructed with a unique spiral cell connection pattern, enhancing its flexibility and allowing for controlled expansion and contraction. This innovative design reduces stress concentrations and minimizes the risk of fatigue-induced fractures.
  • the stent design is optimized to resist compression forces while maintaining excellent apposition against the luminal wall. This ensures stable deployment at the site of obstruction, preventing vessel collapse and maintaining an open lumen.
  • the stent incorporates a peak-to-peak nodes connection mechanism, which efficiently disperses mechanical forces across the entire stent structure. This feature contributes to the implant's overall mechanical integrity and fracture resistance.
  • Figures. 1 illustrates Intraluminal Medical Device having High Fatigue Resistance. It should be noted that Figure 1 are merely examples. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiments of the present disclosure.
  • a stent 100 comprising a plurality of circular structure 102.
  • the width of the plurality of the circular structure 102 ranges between 40 mm to 80 mm.
  • the plurality of circular structure 102 comprises a first pair of structure 103 and a second pair of structure 105.
  • the first pair of structure 103 and the second pair of structure is made up of a plurality of peaks 108 and a plurality of valleys 109 to form undulating pattern 106.
  • the undulating pattern 106 comprises a thickness range between 0.8 mm to 2 mm.
  • the undulating pattern 106 of the first pair of structure 103 and the second pair of structure 105 is mirror to each other mirror.
  • the plurality of circular structure 102 further comprises a plurality of first links 104.
  • the plurality of first links 104 are coupled in between the plurality of the valleys 109 of the first pair of structure 103 and the second pair of structure 105.
  • the plurality of circular structure 102 further comprises a plurality of second links 110.
  • the plurality of second links 110 is a U-shaped structure.
  • the plurality of second links 110 are configured to couple a first pair of structure 103 and second pair of structure 105.
  • the plurality of circular structure 102 are coupled with the plurality of the second links 110 to form a radially expandable stent 100.
  • Each circular structure 102 includes undulating pattern 106 that are advantageously designed that may provide characteristics that can be expanded/bent without causing substantial damage to the stent and is joined to an adjacent circular structure by a connecting plurality of second links 110.
  • the stent 100 comprises a first dimeter in contracted condition.
  • the first diameter of the stent in contracted condition is varies from 3 mm to 5 mm.
  • the stent 100 comprises a second dimeter in expanded condition, wherein the second diameter of the stent in expanded condition is varies from 10 mm to 14 mm.
  • the plurality of second link 110 can be configured to allow the undulating pattern 106 to circumferentially expand and contract to produce radial expansion/contraction of the stent 100 and can contribute to the radial outward force produced by the stent 100.
  • a high visibility radiopaque tantalum marker 202 are provided at the proximal and distal end of the stent 100.
  • the height value H may be between about 40-80 mm.
  • the stent 100 has undulating pattern 106 having a thickness of about 0.8 - 2 mm that provides outward radial force.
  • the stent 100 has a full diameter of about 12 mm and can crimp down to about 5 mm or less (not shown).
  • a stent 100 comprising a plurality of circular structure 102’.
  • the width of the plurality of the circular structure 102’ ranges between 40 mm to 80 mm.
  • the plurality of circular structure 102 comprises a first pair of structure 103’ and a second pair of structure 105’.
  • the first pair of structure 103’ and the second pair of structure is made up of a plurality of peaks 108 and a plurality of valleys 109’ to form undulating pattern 106’.
  • the undulating pattern 106’ comprises a thickness range between 0.8 mm to 2 mm.
  • the undulating pattern 106’ of the first pair of structure 103 and the second pair of structure 105’ is mirror to each other mirror.
  • the plurality of circular structure 102’ further comprises a plurality of first links 104’.
  • the plurality of first links 104’ are coupled in between the plurality of the valleys 109’ of the first pair of structure 103’ and the second pair of structure 105.
  • the plurality of second links 110’ is straight structure.
  • the plurality of second links 110’ are configured to couple a first pair of structure 103’ and second pair of structure 105’.
  • the plurality of circular structure 102’ are coupled with the plurality of the second links 110’ to form a radially expandable stent 100’.
  • a high visibility radiopaque tantalum markers 202’ are provided at the proximal and distal end of the stent 100’.
  • the stent 100’ comprises a first dimeter in contracted condition.
  • the first diameter of the stent in contracted condition is varies from 3 mm to 5 mm.
  • the stent 100’ comprises a second dimeter in expanded condition.
  • the second diameter of the stent 100’ in expandable condition is varies from 10 mm to 14 mm.
  • Each circular structure 102’ includes undulating pattern 106’ that are advantageously designed that may provide characteristics that can be expanded/bent without causing substantial damage to the stent and is joined to an adjacent circular structure by a connecting plurality of second links 110’.
  • the stent 100’ comprises a first dimeter in contracted condition.
  • the first diameter of the stent in contracted condition is varies from 3 mm to 5 mm.
  • the stent 100 comprises a second dimeter in expanded condition, wherein the second diameter of the stent in expanded condition is varies from 10 mm to 14 mm.
  • the plurality of second link 110’ can be configured to allow the undulating pattern 106’ to circumferentially expand and contract to produce radial expansion/con traction of the stent 100 and can contribute to the radial outward force produced by the stent 100’ .
  • a high visibility radiopaque tantalum marker 202’ are provided at the proximal and distal end of the stent 100’.
  • the height value H may be between about 40-80 mm.
  • the stent 100’ has undulating pattern 106’ having a thickness of about 0.8 - 2 mm that provides outward radial force.
  • the stent 100’ has a full diameter of about 12 mm and can crimp down to about 5 mm or less (not shown).
  • the present invention provides a vascular implant that has high resistance to fracture when mechanically cycled at a site in a body lumen.
  • the present invention provides a stent 100 having a high degree of flexibility so, that it can be advanced through tortuous passageways and can be readily expanded.
  • the present invention proposes a fatigue fracture resistant vascular implant, such as a self-expanding stent designed to address the limitations of existing stent 100 designs.
  • the stent 100 is constructed with a unique spiral cell connection pattern, enhancing its flexibility and allowing for controlled expansion and contraction. This innovative design reduces stress concentrations and minimizes the risk of fatigue-induced fractures.
  • the stent 100 design is optimized to resist compression forces while maintaining excellent apposition against the luminal wall. This ensures stable deployment at the site of obstruction, preventing vessel collapse and maintaining an open lumen.
  • the stent 100 incorporates a peak-to-peak nodes connection mechanism, which efficiently disperses mechanical forces across the entire stent 100 structure. This feature contributes to the implant's overall mechanical integrity and fracture resistance.
  • Fig. 1-3 are merely examples. A person skilled in the art will recognize many variations, alternatives, and modifications of the embodiment of the present disclosure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Optics & Photonics (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

La présente invention se rapporte à une endoprothèse (100). L'invention concerne une endoprothèse (100) comprenant une pluralité de structures circulaires (102). La pluralité de structures circulaires (102) comprend une première paire de structures (103) et une seconde paire de structures (105). La première paire de structures (103) et la seconde paire de structures sont constituées d'une pluralité de pics (108) et d'une pluralité de creux (109) pour former un motif ondulé (106). La pluralité de structures circulaires (102) comprend en outre une pluralité de premières liaisons (104). La pluralité de structures circulaires (102) comprend en outre une pluralité de secondes liaisons (110). La pluralité de structures circulaires (102) sont couplées à la pluralité des secondes liaisons (110) pour former une endoprothèse radialement extensible (100).
PCT/IN2024/051552 2023-08-25 2024-08-25 Endoprothèse extensible à liaisons de raccord flexibles WO2025046613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202321057220 2023-08-25
IN202321057220 2023-08-25

Publications (1)

Publication Number Publication Date
WO2025046613A1 true WO2025046613A1 (fr) 2025-03-06

Family

ID=94818298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2024/051552 WO2025046613A1 (fr) 2023-08-25 2024-08-25 Endoprothèse extensible à liaisons de raccord flexibles

Country Status (1)

Country Link
WO (1) WO2025046613A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050171597A1 (en) * 2003-11-08 2005-08-04 Boatman Scott E. Helical stent for branched vessel prosthesis
US20070191927A1 (en) * 2005-11-07 2007-08-16 Bowe Jason S Stent with orientation-dependent properties

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050171597A1 (en) * 2003-11-08 2005-08-04 Boatman Scott E. Helical stent for branched vessel prosthesis
US20070191927A1 (en) * 2005-11-07 2007-08-16 Bowe Jason S Stent with orientation-dependent properties

Similar Documents

Publication Publication Date Title
EP2268235B1 (fr) Prothèse expansive comprenant des anneaux évasés sélectifs
US7540881B2 (en) Bifurcation stent pattern
US7806923B2 (en) Side branch stent having a proximal split ring
US8317855B2 (en) Crimpable and expandable side branch cell
US6066169A (en) Expandable stent having articulated connecting rods
EP1895938B1 (fr) Endoprotheses comprenant des pieds de prolongement
US6979349B1 (en) Universal stent link design
US8109991B2 (en) Endoprosthesis having foot extensions
EP0890346A1 (fr) Endoprothèse intraluminale expansible
US20030105517A1 (en) Non-foreshortening stent
EP1579824A2 (fr) Stent à épaisseur variable et son procédé de fabrication
US20060173530A1 (en) Flexible cells for interconnecting stent components
US20070135891A1 (en) Stent having an expandable web structure
JP2008541840A (ja) ステントの側枝花弁部の選択的な処理
JP2007500579A (ja) 脈管用補綴物
CN110785146A (zh) 血管内支架
CN112118812B (zh) 支架
US20090259299A1 (en) Side Branch Stent Having a Proximal Flexible Material Section
WO2025046613A1 (fr) Endoprothèse extensible à liaisons de raccord flexibles
WO2025046612A1 (fr) Dispositif médical intraluminal à résistance à la fatigue élevée
WO2025046614A1 (fr) Endoprothèse à multiples jonctions de pontage
EP2073766B1 (fr) Stent fourchu à pétale entièrement circonférentiel
US20110251672A1 (en) Aspect ratio for stent strut design
CA2358449A1 (fr) Extenseurs intravasculaires tubulaires expansibles

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24858956

Country of ref document: EP

Kind code of ref document: A1