Wire for removing intravascular foreign body and medical instrument
First Claim
Patent Images
1. A wire for removing an intravascular foreign body comprising:
- a flexible wire body possessing a forward end;
a branch part branching out from the forward end of the wire body;
a plurality of filaments extending across said branch part;
the branch part and the filaments together forming a capturing space in which is to be captured a foreign body; and
at least one of the filaments being changeable in length so that a loop formed by the at least one filament and the branch part changes in size.
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Abstract
A wire for removing an intravascular foreign body comprises a flexible wire body, a branch part branching out from the forward end of the wire body, and a plurality of filaments extending across the branch part. The branch part and the filaments form a space for capturing a foreign body therein. At least one of the filaments is changeable in length so that the loop formed by the filament and the branch part changes in size. The wire is capable of relatively reliably capturing and removing a foreign body in the vessel.
46 Citations
18 Claims
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1. A wire for removing an intravascular foreign body comprising:
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a flexible wire body possessing a forward end;
a branch part branching out from the forward end of the wire body;
a plurality of filaments extending across said branch part;
the branch part and the filaments together forming a capturing space in which is to be captured a foreign body; and
at least one of the filaments being changeable in length so that a loop formed by the at least one filament and the branch part changes in size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
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10. A wire for removing an intravascular foreign body comprising:
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a flexible wire body possessing a forward end, the wire body having an outer dimension permitting the flexible wire to be positioned in a blood vessel of a living body;
a plurality of branch wires connected to the forward end of the wire body and extending in a forward direction from the forward end of the flexible wire body;
the branch wires branching outwardly away from one another so that a distance between the branch wires is greater farther away from the forward end of the wire body than nearer to the wire body;
each of the branch wires having a forward end;
a plurality of filaments extending between the forward ends of the branch wires;
the branch wires and the filaments together forming a capturing space in which is to be captured a foreign body in the blood vessel, the branch wires and filaments having outer dimensions permitting placement in the blood vessel of the living body;
the branch wires and at least one of the filaments together forming a loop wire; and
the at least one filament being movable relative to at least one of the branch wires to change a peripheral length of the loop wire. - View Dependent Claims (11, 13, 14, 15)
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16. A wire for removing an intravascular foreign body comprising:
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a flexible wire body possessing a forward end, the wire body having an outer dimension permitting the flexible wire to be positioned in a blood vessel of a living body;
a plurality of loop wires connected to the flexible wire body, the loop wires possessing an outer dimension permitting the loop wires to be positioned in the blood vessel of the living body;
the loop wires together defining a capturing space in which is to be captured a foreign body in the blood vessel; and
means connected to at least one of the loop wires for reducing an area enclosed by the at least one loop wire. - View Dependent Claims (17, 18)
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Specification