Vascular stent with improved vessel wall apposition
First Claim
1. A medical device, comprising:
- a delivery wire having a proximal end and a distal end;
a connection mechanism; and
a vessel-engaging member attached to the distal end of the delivery wire via the connection mechanism, the vessel-engaging member comprising;
a plurality of rows, each row having a plurality of struts arranged in an alternating pattern such that for each row, a first set of vertices is positioned on a proximal side, and a second set of vertices is positioned on a distal side;
a plurality of bridges positioned between each adjacent row, each of the bridges connecting a vertex of a first row with a vertex of a second row, the vertex of the first row lying substantially along a line parallel to a longitudinal axis of the vessel-engaging member and the vertex of the second row lying outside the line, each of the bridges extending continuously distally from the vertex of the first row to the vertex of the second row, a cross-sectional width of each of the plurality of bridges being less than a cross-sectional width of each of the struts to which that bridge connects; and
first and second tapered sections coupled to the connection mechanism, each of the tapered sections projecting from a proximal row and tapering in a direction from the proximal row toward the connection mechanism, each of the tapered sections having a length measured along the longitudinal axis;
wherein the length of the first tapered section is less than the length of the second tapered section.
2 Assignments
0 Petitions
Accused Products
Abstract
A medical device is provided. The medical device includes a vessel-engaging member attached to a distal end of a delivery wire via a connection mechanism. The vessel-engaging member includes a plurality of rows and a plurality of bridges positioned between each adjacent row, each of the bridges connecting a vertex of a first row with a corresponding vertex of a second row. The vessel-engaging member further includes first and second tapered sections coupled to the connection mechanism, each of the tapered sections projecting from a proximal row and tapering in a direction from the proximal row toward the connection mechanism, each of the tapered sections having a length measured along a longitudinal axis, wherein the length of the first tapered section is less than the length of the second tapered section.
88 Citations
19 Claims
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1. A medical device, comprising:
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a delivery wire having a proximal end and a distal end; a connection mechanism; and a vessel-engaging member attached to the distal end of the delivery wire via the connection mechanism, the vessel-engaging member comprising; a plurality of rows, each row having a plurality of struts arranged in an alternating pattern such that for each row, a first set of vertices is positioned on a proximal side, and a second set of vertices is positioned on a distal side; a plurality of bridges positioned between each adjacent row, each of the bridges connecting a vertex of a first row with a vertex of a second row, the vertex of the first row lying substantially along a line parallel to a longitudinal axis of the vessel-engaging member and the vertex of the second row lying outside the line, each of the bridges extending continuously distally from the vertex of the first row to the vertex of the second row, a cross-sectional width of each of the plurality of bridges being less than a cross-sectional width of each of the struts to which that bridge connects; and first and second tapered sections coupled to the connection mechanism, each of the tapered sections projecting from a proximal row and tapering in a direction from the proximal row toward the connection mechanism, each of the tapered sections having a length measured along the longitudinal axis; wherein the length of the first tapered section is less than the length of the second tapered section. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10)
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4. The medical device of embodiment 1, wherein each of the plurality of struts has a strut length, each bridge has a bridge length, and the strut length and the bridge length are the same.
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11. A method of implanting a medical device in the neurovasculature comprising:
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inserting a guide catheter into the neurovasculature; inserting a microcatheter through the distal end of the guide catheter; inserting a vessel-engaging member into the microcatheter such that the distal portion of the member is located adjacent a treatment site in the neurovasculature, wherein the member comprises; a plurality of rows, each row having a plurality of struts arranged in an alternating pattern such that for each row, a first set of vertices is positioned on a proximal side and a second set of vertices is positioned on a distal side; a plurality of bridges positioned between each adjacent row, each of the bridges connecting a vertex of a first row with a vertex of a second row, the vertex of the first row lying substantially along a line parallel to a longitudinal axis of the vessel-engaging member and the vertex of the second row lying outside the line, each of the bridges extending continuously distally from the vertex of the first row to the vertex of the second row, a cross-sectional width of each of the plurality of bridges being less than a cross-sectional width of each of the struts to which that bridge connects; and first and second tapered sections projecting from a proximal row and tapering in a direction from the proximal row toward a proximal end of the member, each of the tapered sections having a length measured along the longitudinal axis; wherein the length of the first tapered section is less than the length of the second tapered section; and withdrawing the microcatheter so as to expose and deploy the vessel-engaging member, the vessel-engaging member configured to expand against and engage the treatment site. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of implanting a medical device in a lumen at a tortuous curve, comprising:
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inserting a vessel-engaging member into the lumen, the member comprising; a plurality of rows, each row having a plurality of struts arranged in an alternating pattern such that for each row, a first set of vertices is positioned on a proximal side and a second set of vertices is positioned on a distal side; a plurality of bridges positioned between each adjacent row, each of the bridges connecting a vertex of a first row with a vertex of a second row, the vertex of the first row lying substantially along a line parallel to a longitudinal axis of the vessel-engaging member and the vertex of the second row lying outside the line, each of the bridges extending continuously distally from the vertex of the first row to the vertex of the second row, a cross-sectional width of each of the plurality of bridges being less than a cross-sectional width of each of the struts to which that bridge connects; and first and second tapered sections projecting from a proximal row and tapering in a direction from the proximal row toward a proximal end of the member, each of the tapered sections having a length measured along the longitudinal axis; wherein the length of the first tapered section is less than the length of the second tapered section; and contacting a wall of the lumen with the member at an apex of the tortuous curve by deflecting the plurality of bridges adjacent to the apex so that vertices adjacent to the deflecting the plurality of bridges contact the wall of the lumen.
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Specification