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Publication Number
US-11844680-B2
Publication Date
2023-12-19
Expiration Date
Abstract
The invention relates to an expandable vascular implant for implantation into vessels of a patient, the vascular implant being convertible from a compressed state to an expanded state, and the vascular implant comprising the following: a hollow cylindrical main body having a longitudinal direction and a proximal end and a distal end, and a main body lumen which extends from the proximal to the distal end. The hollow cylindrical main body is formed by a tubular lattice structure, the tubular lattice structure having at least one first and at least one second region, the first region being fixedly connected to the second region, the first region being designed to be self-expandable, and the second region is designed to be balloon-dilatable.
Core Innovation
An expandable vascular implant configured for implantation into vessels of a patient converts from a compressed state into an expanded state. The vascular implant includes a hollow cylindrical main body with a longitudinal direction, a proximal and a distal end, and a main body lumen extending from the proximal up to the distal end. The hollow cylindrical main body is formed by a tubular lattice structure and includes at least one first and at least one second region.
The first and the second regions include different materials and are firmly connected. The first region has a first diameter in an expanded state extending from the proximal end to the second region and is formed from stent springs, and the first region further comprises prosthesis material attached to the stent springs. The first region is self-expandable.
The second region has a second diameter in an expanded state extending from the distal end to the first region and is balloon-dilatable. The second region is constructed of a mesh with intersecting a multiplicity of filamentary elements in a plane perpendicular to the longitudinal direction at a braiding angle and forming meshes. The vascular implant includes a marker containing a radiopaque material provided at one or more of the ends and between the first and second region, where the radiopaque material differs from the material of the tubular lattice structure or where the marker has a shape different from the tubular lattice structure.
The disclosed delivery and release uses an insertion system including a retraction sheath for compression of at least the first region and a first catheter having a dilation body. The method inserts the insertion system loaded with the expandable vascular implant up to a site to be treated in the vessel, and releasing is performed by dilation of the dilation body and withdrawal of the retraction sheath.
Claims Coverage
The material contains two independent claims. The inventive coverage includes a two-region tubular lattice implant, a radiopaque marker, and a delivery and release method using an insertion system with a retraction sheath and a catheter dilation body.
Two-region tubular lattice implant with firmly connected self-expandable and balloon-dilatable regions
A hollow cylindrical main body formed by a tubular lattice structure comprising at least one first and at least one second region, where the first and the second regions include different materials and are firmly connected, with the first region extending from the proximal end to the second region and the second region extending from the distal end to the first region.
Stent-spring first region formed from meanderingly encircling sharp curves
The first region is formed from stent springs, where the stent springs are formed from meanderingly encircling sharp curves each formed from two legs with peaks or troughs in between arranged one after another in the longitudinal direction.
Prosthesis material attached to self-expandable stent springs
The first region further comprises prosthesis material attached to the stent springs.
Balloon-dilatable mesh second region with filamentary elements at a braiding angle
The second region is constructed of a mesh with intersecting a multiplicity of filamentary elements in a plane perpendicular to the longitudinal direction at a braiding angle and forming meshes, and the second region is balloon-dilatable.
Radiopaque marker distinguishable by radiopaque material or marker shape
The vascular implant includes a marker that contains a radiopaque material, provided at one or more of the ends and between the first and second region, where the radiopaque material is different from the material of the tubular lattice structure, or where the marker has a shape different from the tubular lattice structure.
Insertion-system delivery with retraction sheath compression and catheter dilation body release
A method including providing an insertion system comprising a retraction sheath for compression of at least the first region and a first catheter having a dilation body, loading the expandable vascular implant into the insertion system, inserting up to a site to be treated in the vessel, and releasing the expandable vascular implant by dilation of the dilation body and withdrawal of the retraction sheath.
The inventive coverage is directed to a two-region expandable vascular implant with a tubular lattice main body, a self-expandable first region formed from stent springs with prosthesis material, a balloon-dilatable second region formed as a braided mesh, and a radiopaque marker distinguishable by radiopaque material or marker shape, together with an insertion system using a retraction sheath and a catheter dilation body for delivery and release.
Stated Advantages
Documented Applications
Treating a vasoconstriction or rupture of a vessel.
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