Vascular filter
First Claim
Patent Images
1. A filter for a body lumen, comprising:
- an axial member having a first set of expandable legs and a second set of expandable legs,each leg of the first set of expandable legs comprising;
a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, anda second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, the outer segment of the second portion configured to be radially expandable from the axial member,wherein the first portion is coupled to the second portion at a first apex, wherein an internal angle extending between an inside surface of the first portion and an inside surface of the second portion is an acute angle, and wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle; and
each leg of the second set of expandable legs comprising;
a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, anda second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, the outer segment of the second portion configured to be radially expandable from the axial member,wherein the first portion is coupled to the second portion at a second apex, wherein an internal angle extending between an inside surface of the first portion and an inside surface of the second portion is an acute angle, and wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle; and
wherein the plurality of the first apexes of the first set of legs are spaced apart from the plurality of the second apexes of the second set of legs a distance parallel to a longitudinal axis of the axial member, when the first and second sets of legs are expanded.
2 Assignments
0 Petitions
Accused Products
Abstract
A filter, configured to be disposed within a body lumen, that includes one or more filtering zones. The filter may include one or more sets of legs, configured to interact with the body lumen wall in order to stabilize the position of the filter and to create a filtering structure. In some embodiments the filter may be integrally formed form a single tube of material.
-
Citations
47 Claims
-
1. A filter for a body lumen, comprising:
-
an axial member having a first set of expandable legs and a second set of expandable legs, each leg of the first set of expandable legs comprising; a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, and a second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, the outer segment of the second portion configured to be radially expandable from the axial member, wherein the first portion is coupled to the second portion at a first apex, wherein an internal angle extending between an inside surface of the first portion and an inside surface of the second portion is an acute angle, and wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle; and each leg of the second set of expandable legs comprising; a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, and a second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, the outer segment of the second portion configured to be radially expandable from the axial member, wherein the first portion is coupled to the second portion at a second apex, wherein an internal angle extending between an inside surface of the first portion and an inside surface of the second portion is an acute angle, and wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle; and wherein the plurality of the first apexes of the first set of legs are spaced apart from the plurality of the second apexes of the second set of legs a distance parallel to a longitudinal axis of the axial member, when the first and second sets of legs are expanded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 34, 35, 36, 37, 38, 39)
-
-
17. A filter for a body lumen, comprising:
-
an axial member integrally formed with, and having, a plurality of legs forming a first set of expandable legs and a plurality of legs forming a second set of expandable legs, each leg of the first set of expandable legs comprising; a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, and a second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle, the outer segment of the second portion configured to be radially expandable from the axial member, wherein the first portion is coupled to the second portion at a first apex, the first portion and the second portion both extending radially inward from the first apex at an acute angle relative to each other when the first set of legs are expanded; and each leg of the second set of expandable legs comprising; a first portion, having an inner segment coupled to the axial member and an outer segment configured to be radially expandable from the axial member, wherein an external angle extending between an outside surface of the first portion and the axial member is an obtuse angle, and a second portion, having an outer segment coupled to the outer segment of the first portion and an inner segment coupled to the axial member, wherein an external angle extending between an outside surface of the second portion and the axial member is an obtuse angle, the outer segment of the second portion configured to be radially expandable from the axial member, wherein the first portion is coupled to the second portion at a second apex, the first portion and the second portion both extending radially inward from the second apex at an acute angle relative to each other when the second set of legs are expanded; and wherein the plurality of the first apexes of the first set of legs are spaced apart from the plurality of the second apexes of the second set of legs a distance parallel to a longitudinal axis of the axial member, when the first and second sets of legs are expanded. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A filter for a body lumen, comprising:
-
a first set of expandable legs, each leg of the first set of legs having a first end and a second end; a second set of expandable legs, each leg of the second set of legs having a first end and a second end; and an axial member, wherein the first ends of the first and second sets of legs are coupled to the axial member adjacent a proximal end of the filter, wherein the second ends of the first and second sets of legs are coupled to the axial member adjacent a distal end of the filter, wherein each leg of the first and second sets of legs defines an obtuse external angle extending between an outside surface of the leg adjacent the first end of the leg and the axial member when the leg is expanded, and wherein each leg of the first and second sets of legs defines an obtuse external angle extending between an outside surface of the leg adjacent the second end of the leg and the axial member when the leg is expanded; wherein the first ends of the first set of legs are circumferentially offset about a longitudinal axis of the filter from the second ends of the first set of legs and the first ends of the second set of legs are circumferentially offset about a longitudinal axis of the filter from the second ends of the second set of legs, wherein each leg of the first and second sets of legs defines an acute internal angle extending between inside surfaces of the leg adjacent the first and second ends of the leg when the leg is expanded. - View Dependent Claims (29, 30, 31, 32, 33)
-
-
40. A method of deploying a filter, comprising:
-
inserting a filter into a body lumen, the filter comprising a first set of legs, each leg coupled to an axial member of the filter at a first and a second end of the leg, and a second set of legs, each leg coupled to the axial member at a first and a second end of the leg; deploying a first set of legs of the filter, wherein each leg defines an acute internal angle extending between inside surfaces of the leg adjacent the first and second ends of the leg when the leg is deployed, wherein each leg defines an obtuse external angle extending between an outside surface of the leg adjacent the first end of the leg and the axial member when the leg is deployed, and wherein each leg defines an obtuse external angle extending between an outside surface of the leg adjacent the second end of the leg and the axial member when the leg is deployed; contacting the body lumen with the first set of legs; deploying a second set of legs of the filter, wherein each leg defines an acute internal angle extending between inside surfaces of the leg adjacent the first and second ends of the leg when the leg is deployed, wherein each leg defines an obtuse external angle extending between an outside surface of the leg adjacent the first end of the leg and the axial member when the leg is deployed, and wherein each leg defines an obtuse external angle extending between an outside surface of the leg adjacent the second end of the leg and the axial member when the leg is deployed; stabilizing the filter by contact between the first set of legs and the body lumen while deploying the second set of legs; and contacting the body lumen with the second set of legs after contacting the body lumen with the first set of legs. - View Dependent Claims (41, 42)
-
-
43. A filter for a body lumen, comprising:
-
an axial member comprising first and second ends and a longitudinal axis; a plurality of legs, each of the plurality of legs comprising first and second ends, wherein the first end of each of the plurality of legs is attached to the first end of the axial member, and the second end of each of the plurality of legs is attached to the second end of the axial member; wherein each of the plurality of legs compressibly extends radially from the axial member to an apex; wherein at least two of the legs each define an acute internal angle extending between inside surfaces of each of the at least two legs adiacent the first and second ends of each of the at least two legs when each of the at least two legs is expanded; wherein each of the at least two legs each define an obtuse external angle extending between outside surfaces of each of the at least two legs adiacent the first ends of each of the at least two legs and the axial member when each of the at least two legs is expanded; wherein each of the at least two legs each define an obtuse external angle extending between outside surfaces of each of the at least two legs adiacent the second ends of each of the at least two legs and the axial member when each of the at least two legs is expanded; and wherein at least two of the apexes are spaced longitudinally from one another. - View Dependent Claims (44, 45, 46, 47)
-
Specification