Stent fixation with reduced plastic deformation
First Claim
1. Apparatus comprising a multi-component endovascular stent system, which comprises first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends,wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states,wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member,wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions,wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by:
- first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, andseparate from the first structural elements, second ones of the structural elements of the second stent member, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force, and wherein all of the first circumferential locations are circumferentially offset from all of the second circumferential locations.
2 Assignments
0 Petitions
Accused Products
Abstract
An endovascular stent system (10) includes first and second generally tubular stents members (20, 22), which are shaped so as to define first and second interface sections (40, 42), respectively, which are securely coupleable to each other. The first interface section (40) is shaped so as to define an opening (44). The second interface section (42) is shaped so as to define a neck portion (50). When the first and second stent members (20, 22) are coupled together, the neck portion (50) is at least in part defined by: (a) first ones (72) of structural elements (70), positioned at respective first circumferential locations, which are configured to apply, to the opening (44), distally- and radially-outwardly-directed forces, without applying any proximally-directed forces, and (b) separate from the first structural elements (72), second ones (74) of the structural elements (70), positioned at respective second circumferential locations different from the first circumferential locations, which are configured to apply, to the opening (44), a proximally- and radially-outwardly-directed forces, without applying any distally-directed forces.
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Citations
27 Claims
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1. Apparatus comprising a multi-component endovascular stent system, which comprises first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends,
wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states, wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member, wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions, wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by: -
first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, and separate from the first structural elements, second ones of the structural elements of the second stent member, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force, and wherein all of the first circumferential locations are circumferentially offset from all of the second circumferential locations. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 26, 27)
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7. Apparatus comprising a multi-component endovascular stent system, which comprises first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends,
wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states, wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member, wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions, wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by: -
first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, and separate from the first structural elements, second ones of the structural elements of the second stent member, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force, wherein all of the first circumferential location are circumferentially offset from all of the second circumferential locations, and wherein the first structural elements are arranged in first groups of one to ten circumferentially-adjacent first structural elements, wherein the second structural elements are arranged in second groups of one to ten circumferentially-adjacent second structural elements, and wherein the first and the second groups circumferentially alternate around the neck portion. - View Dependent Claims (8)
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13. Apparatus comprising a multi-component endovascular stent system, which comprises first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends,
wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states, wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member, wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions, wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by: -
first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, and separate from the first structural elements, second ones of the structural elements of the second stent member, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force, wherein all of the first circumferential locations are circumferentially offset from all of the second circumferential locations, wherein, when the first and the second stent members are in their respective radially-expanded states, at least one of the first structural elements is shaped so as to define first proximal and first distal portions joined at a first apex, which first proximal portion is configured to apply, to the structural circumference, the distally- and radially-outwardly-directed force, and which first distal portion is configured not to apply any force to the structural circumference, and wherein, when the first and the second stent members are in their respective radially-expanded states, at least one of the second structural elements is shaped so as to define second proximal and second distal portions joined at a second apex, which second distal portion is configured to apply, to the structural circumference, the proximally- and radially-outwardly-directed force, and which second proximal portion is configured not to apply any force to the structural circumference.
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23. A method comprising:
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providing a multi-component endovascular stent system, which includes first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends, wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states, wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member, wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions, and wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by;
(a) first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, and (b) separate from the first structural elements of the second stent member, second ones of the structural elements, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements longitudinally spans the structural circumference, and is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force wherein all of the first circumferential locations are circumferentially offset from all of the second circumferential locations; anddeploying the first and the second stent members in a blood vessel of a patient such that the first and the second interface sections are coupled to each other.
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24. Apparatus comprising a multi-component endovascular stent system, which comprises first and second generally tubular stents members, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise structural elements, wherein the second stent member has proximal and distal ends,
wherein the first and the second stent members are shaped so as to define first and second interface sections, respectively, which are securely coupleable to each other when the first and the second stent members are in their respective radially-expanded states, wherein the first interface section is shaped so as to define an opening having a structural circumference defined by one or more of the structural elements of the first stent member, wherein the second interface section is shaped so as to define a neck portion longitudinally flanked by proximal and distal portions, which neck portion is generally radially narrower than the proximal and the distal portions, and wherein, when the first and the second stent members are coupled together in their respective radially-expanded states, the neck portion is at least in part defined by: -
first ones of the structural elements of the second stent member, which are positioned at respective first circumferential locations, wherein each of at least a portion of the first structural elements is configured to apply, to the structural circumference of the first interface section, a distally- and radially-outwardly-directed force, without applying any proximally-directed force, and wherein at least one of the first structural elements is shaped so as to define first proximal and first distal portions joined at a first apex, and separate from the first structural elements, second ones of the structural elements of the second stent member, which are positioned at respective second circumferential locations different from the first circumferential locations, wherein each of at least a portion of the second structural elements is configured to apply, to the structural circumference of the first interface section, a proximally- and radially-outwardly-directed force, without applying any distally-directed force, wherein at least one of the second structural elements is shaped so as to define second proximal and second distal portions joined at a second apex, and wherein the first and the second apexes are disposed at longitudinally different positions, and wherein all of the first circumferential locations are circumferentially offset from all of the second circumferential locations. - View Dependent Claims (25)
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Specification