Vascular and aortic grafts and deployment tools
Inventors
Palermo, Thomas J. • Lee, Pin-Hsuan • Jen, Jimmy
Assignees
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Publication Number
US-11944530-B2
Publication Date
2024-04-02
Expiration Date
Abstract
A vascular graft may be configured to transition from an insertion state to a deployed state. The graft comprising a proximal end having an expandable mesh, a distal end having an expandable mesh, and at least one suture cuff positioned between the proximal and distal ends, wherein each suture cuff comprises additional material relative to the proximal and distal ends that is configured to form when the vascular graft transitions from the insertion state to the deployed state.
Core Innovation
The invention relates to a vascular graft configured to transition from an insertion state to a deployed state. The vascular graft includes a proximal end having an expandable mesh and a distal end having an expandable mesh, with at least two intermediate sections positioned relatively closer to each other than to the proximal and distal ends along a longitudinal axis.
During transition from the insertion state to the deployed state, at least one intermediate section has a first outside diameter in the insertion state and is configured to contract along the longitudinal axis. This contraction forms an outwardly extending suture cuff between the proximal and distal ends, and the suture cuff has a second outside diameter greater than the first outside diameter while the proximal and distal ends are separated by a second distance less than the first distance.
At least one intermediate section can include longitudinal slits so that expansion forms lobes extending radially outward from the slitted portions. In an associated implantation approach, the vascular graft is positioned within a lumen for conducting blood, expanded from the insertion state to the deployed state to form the outwardly extending suture cuff, and the outwardly extending suture cuff is secured to a wall of the lumen by suturing with suture material.
Claims Coverage
The document excerpt includes two independent claims. The inventive content centers on intermediate sections that contract along a longitudinal axis to form an outwardly extending suture cuff with a larger outside diameter in the deployed state while reducing proximal-to-distal separation, plus the securing of that cuff by suturing to a blood-conducting lumen wall.
Outwardly extending suture cuff formed by longitudinal contraction of intermediate sections
A vascular graft having a proximal end with an expandable mesh, a distal end with an expandable mesh, and at least two intermediate sections positioned relatively closer to each other than to the proximal and distal ends, where at least one intermediate section is configured to contract along a longitudinal axis by compression substantially in the longitudinal direction to form an outwardly extending suture cuff between the proximal and distal ends; the outwardly extending suture cuff formed from the at least two intermediate sections has a second outside diameter greater than the first outside diameter, and the proximal and distal ends are separated by a second distance in the deployed state less than the first distance.
Implanting and securing an outwardly extending suture cuff by suturing
A method for implanting a vascular graft within a patient comprising positioning at least one end of the vascular graft within a lumen for conducting blood of the patient; expanding the vascular graft from the insertion state to a deployed state that contracts at least one intermediate section along the longitudinal axis to form, in part by compression substantially in the longitudinal direction, at least one outwardly extending suture cuff between the proximal and distal ends; and securing the at least one outwardly extending suture cuff of the vascular graft to a wall of the lumen for conducting blood of the patient by suturing with suture material.
Overall, the claim coverage focuses on the structural relationship between insertion-state proximal/distal separation, longitudinal contraction of intermediate sections, and outwardly extending suture cuff formation with increased outside diameter in the deployed state, together with the implantation method that positions the graft in a blood-conducting lumen, expands it to create the outwardly extending suture cuff, and secures the cuff to the lumen wall by suturing.
Stated Advantages
Documented Applications
No documented applications found
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