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Publication Number
US-11484399-B2
Publication Date
2022-11-01
Expiration Date
Abstract
The present invention relates to a stent graft for implantation in vessels of a patient, wherein the stent graft has a hollow cylindrical main body made of a first prosthesis material, with a proximal end and a distal end, with a longitudinal axis c and a circumference u, at least one pocket element which is made of a second prosthesis material and which is mounted circumferentially on the outer face and/or inner face of the main body in order to form a circumferential closed pocket on a longitudinal portion of the main body, and at least one stent element which extends in a meandering formation around the main body and is received inside the pocket element.
Core Innovation
The invention relates to a stent graft configured for implantation in a vessel of a patient. The stent graft includes a hollow-cylindrical body made of a first prosthesis material, with a proximal end and a distal end.
Circumferential pocket elements made of a second prosthesis material are mounted on an outer and/or inner face of the body to form circumferential closed pockets on a longitudinal portion of the body. At least one stent element extends in a meandering formation around the body and is received inside the pocket element.
The pocket element is shorter than the body and has a proximal end and a distal end. In locations where the pocket element is not present, the body does not include the second prosthesis material.
The pocket element is circumferentially secured only via its respective distal and proximal end to the outer and/or inner face of the body, and between 1 and 30 pockets are provided, fixed at a distance from each other and separate from each other on the body.
Claims Coverage
The document provides two independent claims centered on the same core arrangement, with 4 inventive features covering a hollow-cylindrical body, circumferential closed pockets of a second prosthesis material, meandering stent elements received inside the pockets, and defined constraints on pocket length, material distribution, securing locations, and pocket count.
Circumferential closed pockets receiving meandering stent elements
A stent graft with a hollow-cylindrical body made of a first prosthesis material, at least one pocket element made of a second prosthesis material mounted circumferentially on an outer and/or inner face to form a circumferential closed pocket, and at least one stent element extending in a meandering formation around the body and received inside the pocket element.
Shorter pockets with body regions free of the second prosthesis material
The at least one pocket element is shorter than the body and has a proximal end and a distal end, and in locations where the at least one pocket element is not present, the body does not include the second prosthesis material.
Pockets secured only at distal and proximal ends and pocket count constraint
The at least one pocket element is circumferentially secured only via its respective distal and proximal end to the outer and/or inner face of the body, and between 1 and 30 pocket elements are provided, which are fixed at a distance from each other and are separate from each other on the body.
Pocket-mounted stent graft with the same securing and count constraints
A stent graft comprising a hollow-cylindrical body made of a first prosthesis material, at least one pocket located between the proximal end and the distal end and made of a second prosthesis material forming a circumferential closed pocket on a longitudinal portion, with at least one stent element extending in a formation around the body and received inside the pocket, where the at least one pocket is shorter than the body, the body does not include the second prosthesis material where the at least one pocket is not present, the at least one pocket is circumferentially secured only via its respective distal and proximal end to the outer and/or an inner face, and between 1 and 30 pockets are provided fixed at a distance from each other and separated along the body.
Across both independent claims, the inventive coverage concentrates on the combination of circumferential closed pocket elements of a second prosthesis material mounted on a hollow-cylindrical body of a first prosthesis material, meandering stent elements received inside those pockets, and defined structural constraints on pocket length, material distribution, pocket securing, and pocket count.
Stated Advantages
Reduces the need for labor-intensive manual sewing of the pocket elements.
Enables machine-made pocket seams.
Supports structural and functional arrangement consistent with the claimed pocket-and-stent arrangement.
Helps maintain side-vessel perfusion.
Allows X-ray positioning via radiopaque markers.
Documented Applications
Stent graft configured for implantation in a vessel of a patient.
Use includes side-vessel perfusion where side branches are provided.
X-ray positioning of the stent graft using radiopaque markers.
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