Multi-pivot thrombectomy device
First Claim
1. A device for retrieving vascular debris in a vasculature, the device comprising:
- at least three segments radially expandable from a collapsed state to an expanded state, each of the at least three segments having a waist comprising a radially largest region of the segment;
at least one intermediate portion, each of the at least one intermediate portion connecting adjacent segments and having a diameter less than a diameter of the waist;
wherein each of the at least three segments comprises a proximal end and a distal end that are connected by only struts and sub-struts, the struts and sub-struts extending radially outside the diameter of the at least one intermediate portion, wherein, in each of the at least three segments, at least one strut extends proximally from the distal end and along a first longitudinal region of the segment and divides into at least two sub-struts, the at least two sub-struts being entirely within a second longitudinal region of the segment that is outside the radially largest region of the segment, the struts tapering from the waist radially inwardly toward a longitudinal axis of the device as the struts approach an adjacent intermediate portion;
wherein the at least three segments and the at least one intermediate portion form a single monolithic structure;
wherein each intermediate portion forms a circumferentially continuous hollow cylinder.
1 Assignment
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Accused Products
Abstract
A device may be used for capturing and retrieving vascular debris. The device may include: at least two segments radially expandable from a collapsed state to an expanded state, each of the at least two segments having (a) a waist including a radially largest region of the segment and (b) two longitudinal ends; at least one intermediate portion, each of the at least one intermediate portion including a pivot that connects adjacent segments, each pivot having a diameter less than a diameter of the waist; wherein each of the at least two segments includes at least two struts that extend longitudinally from a proximal end to a distal end of the segment, the at least two struts tapering from the waist radially inward toward a longitudinal axis of the device as the at least two struts approach an adjacent intermediate portion.
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Citations
24 Claims
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1. A device for retrieving vascular debris in a vasculature, the device comprising:
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at least three segments radially expandable from a collapsed state to an expanded state, each of the at least three segments having a waist comprising a radially largest region of the segment; at least one intermediate portion, each of the at least one intermediate portion connecting adjacent segments and having a diameter less than a diameter of the waist; wherein each of the at least three segments comprises a proximal end and a distal end that are connected by only struts and sub-struts, the struts and sub-struts extending radially outside the diameter of the at least one intermediate portion, wherein, in each of the at least three segments, at least one strut extends proximally from the distal end and along a first longitudinal region of the segment and divides into at least two sub-struts, the at least two sub-struts being entirely within a second longitudinal region of the segment that is outside the radially largest region of the segment, the struts tapering from the waist radially inwardly toward a longitudinal axis of the device as the struts approach an adjacent intermediate portion; wherein the at least three segments and the at least one intermediate portion form a single monolithic structure; wherein each intermediate portion forms a circumferentially continuous hollow cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for retrieving vascular debris in a vasculature, the system comprising:
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at least three segments expandable from a collapsed state to an expanded state, each of the at least three segments having a waist comprising a radially largest region of the segment; at least two intermediate portions, each of the at least two intermediate portions connecting adjacent segments and having a diameter less than a diameter of the waist; a sheath configured to encase the at least three segments in the collapsed state; and wherein each of the at least three segments comprises, between a proximal end and a distal end thereof, only struts and sub-struts, the struts and sub-struts extending radially outside the diameter of the at least two intermediate portions, wherein, in each of the at least three segments, at least one strut extends proximally from the distal end and along a first longitudinal region of the segment and divides into at least two sub-struts, the at least two sub-struts being entirely within a second longitudinal region of the segment that is outside the radially largest region of the segment; wherein the at least three segments and the at least two intermediate portions form a single monolithic structure; wherein each intermediate portion forms a circumferentially continuous hollow cylinder. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of retrieving vascular debris from a vasculature, the method comprising:
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inserting into the vasculature of a patient at least a portion of a sheath comprising a distal opening and encasing at least two segments expandable from a collapsed state to an expanded state, each of the at least two segments having a waist comprising a radially largest region of the segment and at least one intermediate portion connecting the segment to an axially adjacent segment, wherein the at least two segments and the at least one intermediate portion form a single monolithic structure, wherein each of the at least two segments comprises, between a proximal end and a distal end thereof, only struts and sub-struts, the struts and sub-struts extending radially outside a diameter of the at least one intermediate portion, wherein, in each of the at least two segments, at least one strut extends proximally from the distal end and along a first longitudinal region of the segment and divides into at least two sub-struts, the at least two sub-struts being entirely within a second longitudinal region of the segment that is outside the radially largest region of the segment, wherein each intermediate portion forms a circumferentially continuous hollow cylinder; expanding at least a portion of the at least two segments into vascular debris; and retrieving the at least two segments and the vascular debris to within the sheath. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification