Intravascular obstruction removing wire and medical instrument
First Claim
1. An intravascular obstruction removing wire comprising:
- an elongate wire body with a distal end;
at least two non-branched wire portions having distal ends and proximal ends, the proximal ends of the non-branched wire portions being connected to the distal end of said elongate wire body; and
a plurality of filament portions extending across said non-branched wire portions,wherein each of said filament portions has a first end portion, a second end portion, and a loop section extending between the first and second end portions thereof,wherein the first and second end portions of the filament portions are respectively gathered at the respective distal ends of the non-branched wire portions and respectively connected to the respective distal ends thereof, and the loop sections of the filament portions are separated from each other to form a trapping portion, andwherein said trapping portion is deformable from a large-diameter state in which said non-branched wire portions branch from the distal end of said elongate wire body forward in different directions and said filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said filament portions is formed to trap therein an obstruction in a blood vessel, to a small-diameter state in which said non-branched wire portions are positioned so that a distance between the wire portions is smaller than that of the non-branched wire portions in the large-diameter state,wherein the distal ends of said non-branched wire portions are separate from each other, and the loop sections of the filament portions define projecting portions separate from each other in directions perpendicular to a plane on which said non-branched wire portions extend,wherein a distance between adjacent ones of the projecting portions of said plurality of filament portions increases toward their distal ends,wherein the adjacent projecting portions are extended from the end portions at different angles with respect to the plane, andwherein one filament portion with a projecting portion extends on the plane.
1 Assignment
0 Petitions
Accused Products
Abstract
An intravascular obstruction removing wire includes an elongate wire body, at least two non-branched wire portions having distal ends and proximal ends which are connected to a distal end of the wire main body, and a plurality of filament portions extending across the wire portions. The non-branched wire portions and the filament portions form a trapping portion. The trapping portion is deformable from a large-diameter state in which the non-branched portions branch to the distal end of the wire body forward in different directions and the filament portions are separated from each other, so that a space surrounded by the non-branched wire portions and the filament portions is formed to trap therein an obstruction in a blood vessel, to a small-diameter state in which the non-branched wire portions are positioned so that a distance between the wire portions is smaller than that of the wire portions in the large-diameter state.
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Citations
15 Claims
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1. An intravascular obstruction removing wire comprising:
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an elongate wire body with a distal end; at least two non-branched wire portions having distal ends and proximal ends, the proximal ends of the non-branched wire portions being connected to the distal end of said elongate wire body; and a plurality of filament portions extending across said non-branched wire portions, wherein each of said filament portions has a first end portion, a second end portion, and a loop section extending between the first and second end portions thereof, wherein the first and second end portions of the filament portions are respectively gathered at the respective distal ends of the non-branched wire portions and respectively connected to the respective distal ends thereof, and the loop sections of the filament portions are separated from each other to form a trapping portion, and wherein said trapping portion is deformable from a large-diameter state in which said non-branched wire portions branch from the distal end of said elongate wire body forward in different directions and said filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said filament portions is formed to trap therein an obstruction in a blood vessel, to a small-diameter state in which said non-branched wire portions are positioned so that a distance between the wire portions is smaller than that of the non-branched wire portions in the large-diameter state, wherein the distal ends of said non-branched wire portions are separate from each other, and the loop sections of the filament portions define projecting portions separate from each other in directions perpendicular to a plane on which said non-branched wire portions extend, wherein a distance between adjacent ones of the projecting portions of said plurality of filament portions increases toward their distal ends, wherein the adjacent projecting portions are extended from the end portions at different angles with respect to the plane, and wherein one filament portion with a projecting portion extends on the plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical instrument comprising:
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a catheter having a lumen and a distal end face to be positioned in a blood vessel; and an obstruction removing wire inserted in the lumen and inserted in the blood vessel from the distal end face, said obstruction removing wire comprising; an elongate wire body with a distal end, at least two non-branched wire portions with distal ends and proximal ends which are connected to the distal end of said elongate wire body, and a plurality of filament portions extending across said non-branched wire portions, wherein each of said filament portions has a first end portion, a second end portion, and a loop section extending between the first and second end portions thereof, wherein the first and second end portions of the filament portions are respectively gathered at the respective distal ends of the non-branched wire portions and respectively connected to the respective distal ends thereof, and the loop sections of the filament portions are separated from each other to form a trapping portion, and wherein said trapping portion is set in a large-diameter state, when projecting from a front end face of said catheter, in which said non-branched wire portions branch from the distal end of said elongate wire body forward in different directions and said filament portions are separated from each other, so a space surrounded by said non-branched wire portions and said filament portions is formed to trap therein an obstruction in a blood vessel, and is set in a small-diameter state, when positioned in the lumen of said catheter, in which said non-branched wire portions are regulated by an inner surface of the lumen and the space between the non-branched wire portions becomes narrow, wherein the distal ends of said non-branched wire portions are separate from each other, and the loon sections of the filament portions define projecting portions separate from each other in directions perpendicular to a plane on which said non-branched wire portions extend, wherein a distance between adjacent ones of the projecting portions of said plurality of filament portions increases toward their distal ends, wherein the adjacent projecting portions are extended from the end portions at different angles with respect to the plane, and wherein one filament portion with a projecting portion extends on the plane. - View Dependent Claims (13)
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14. An intravascular obstruction removing wire comprising:
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an elongate wire body with a distal end; at least two non-branched wire portions having distal ends and proximal ends, the proximal ends of the non-branched wire portions being connected to the distal end of said elongate wire body; and a plurality of filament portions extending across said non-branched wire portions, wherein each of said filament portions has a first end portion, a second end portion, and a loop section extending between the first and second end portions thereof, wherein the first and second end portions of the filament portions are respectively gathered at the respective distal ends of the non-branched wire portions and respectively connected to the respective distal ends thereof, and the loop sections of the filament portions are separated from each other to form a trapping portion, and wherein said trapping portion is deformable from a large-diameter state in which said non-branched wire portions branch from the distal end of said elongate wire body forward in different directions and said filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said filament portions is formed to trap therein an obstruction in a blood vessel, to a small-diameter state in which said non-branched wire portions are positioned so that a distance between the wire portions is smaller than that of the non-branched wire portions in the large-diameter state, wherein one of the filament portions is located on approximately the same plane as a plane on which the non-branched wire portions are located, and is provided with a radiopaque marker. - View Dependent Claims (15)
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Specification