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, the two non-branched wire portions lying in a plane;
a plurality of non-branched filament portions extending across said non-branched wire portions;
each of said non-branched filament portions having a first end portion, a second end portion, and a loop section extending between the first and second end portions;
the first end portions of all of the non-branched filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto and the second end portions of all of the non-branched filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto so that the intravascular obstruction removing wire has no filament portion which is not gathered at the respective distal ends of the non-branched wire portions, and the loop sections of the non-branched filament portions are separated from each other to form a trapping portion;
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 non-branched filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said non-branched 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; and
the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane, the loop section of the third filament portion lying approximately in the plane.
0 Assignments
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.
50 Citations
26 Claims
-
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, the two non-branched wire portions lying in a plane; a plurality of non-branched filament portions extending across said non-branched wire portions; each of said non-branched filament portions having a first end portion, a second end portion, and a loop section extending between the first and second end portions; the first end portions of all of the non-branched filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto and the second end portions of all of the non-branched filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto so that the intravascular obstruction removing wire has no filament portion which is not gathered at the respective distal ends of the non-branched wire portions, and the loop sections of the non-branched filament portions are separated from each other to form a trapping portion; 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 non-branched filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said non-branched 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; and the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane, the loop section of the third filament portion lying approximately in the plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A medical instrument comprising:
-
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 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, the two non-branched wire portions lying in a plane; a plurality of non-branched filament portions extending across said non-branched wire portions, each of said non-branched filament portions having a first end portion, a second end portion, and a loop section extending between the first and second end portions; the first end portions of all of the non-branched filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto and the second end portions of all of the non-branched filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto so that the intravascular obstruction removing wire has no filament portion which is not gathered at the respective distal ends of the non-branched wire portions, and the loop sections of the non-branched filament portions are separated from each other to form a trapping portion; 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 non-branched filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said non-branched 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; and the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane, the loop section of the third filament portion lying approximately in the plane. - View Dependent Claims (17, 18)
-
-
19. 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, the two non-branched wire portions lying in a plane; a plurality of filament portions extending across said non-branched wire portions, each of the filament portions being formed of a non-branched wire so that a continuous space is formed between the adjacent filament portions; each of said filament portions having a first end portion, a second end portion, and a loop section extending between the first and second end portion; the first end portions of the plurality of filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto and the second end portions of the plurality of filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto, and the loop sections of the filament portions are separated from each other to form a trapping portion; said trapping portion is deformable from a large-diameter state in which said non-branched portions branch from the distal end of said 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; and the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane, the loop section of the third filament portion lying approximately in the plane. - View Dependent Claims (20)
-
-
21. 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, the two non-branched wire portions lying in a plane; a plurality of non-branched filament portions extending across said non-branched wire portions; each of said non-branched filament portions has a first end portion, a second end portion, and a loop section extending between the first and second end portions thereof; the first end portions of the plurality of non-branched filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto and the second end portions of the plurality of non-branched filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto, and the loop sections of the filament portions are separated from each other to form a trapping portion; said non-branched filament portions comprising loop wires, said first and second end portions defining a pair of proximal end portions and said loop section defining a loop portion extending from the proximal end portions, and the proximal end portions of the plurality of loop wires being gathered integrally to form said non-branched wire portions; 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 non-branched filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said non-branched 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; and the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane, the loop section of the third filament portion lying approximately in the plane. - View Dependent Claims (22, 23)
-
-
24. 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 which are connected to the distal end of said elongate wire main body, the two non-branched wire portions lying in a plane; a plurality of non-branched filament portions extending across said non-branched wire portions, each of said plurality of non-branched filament portions has a first end portion and a second end portion, the first end portions of the plurality of non-branched filament portions are gathered at the distal end of one of the non-branched wire portions and connected thereto, and the second end portions of the plurality of non-branched filament portions are gathered at the distal end of another one of the non-branched wire portions and connected thereto; wherein said non-branched wire portions and said non-branched filament portions form a trapping portion; said trapping portion is deformable from a large-diameter state in which said non-branched portions branch from the distal end of said elongate wire body forward in different directions and said non-branched filament portions are separated from each other, so that a space surrounded by said non-branched wire portions and said non-branched 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 non-branched wire portions is smaller than that of the non-branched wire portions in the large-diameter state; the plurality of non-branched filament portions comprising a first filament portion, a second filament portion and a third filament portion, the loop section of the first filament portion being positioned entirely on one side of the plane, the loop section of the second filament portion being positioned entirely on the opposite side of the plane; and the third filament portion being located on approximately the same plane as the plane on which the non-branched wire portions are located, and being provided with a radiopaque marker. - View Dependent Claims (25, 26)
-
Specification