Apparatus and method for capturing a wire in a blood vessel
First Claim
Patent Images
1. An apparatus for capturing a wire within a lumen of a blood vessel, said apparatus comprising:
- a tube having a proximal end and a distal end, said distal end of said tube adapted for placement within the lumen of a blood vessel;
a wire loop extending from said distal end of the said tube, said wire loop having a substantially cardioidal shape; and
means for constricting said wire loop.
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Accused Products
Abstract
An apparatus (600) for capturing a wire within a lumen of a blood vessel comprises a tube (602) having a proximal end (604) and a distal end (606). The distal end (606) of the tube (602) is adapted for placement within a lumen of a blood vessel. A wire loop (632) extends from the distal end (606) of the tube (602), the wire loop (632) has a substantially cardioidal shape. The apparatus (600) further includes means (614) for constricting the wire loop (632).
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Citations
19 Claims
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1. An apparatus for capturing a wire within a lumen of a blood vessel, said apparatus comprising:
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a tube having a proximal end and a distal end, said distal end of said tube adapted for placement within the lumen of a blood vessel;
a wire loop extending from said distal end of the said tube, said wire loop having a substantially cardioidal shape; and
means for constricting said wire loop. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for capturing a wire within a lumen of a blood a blood vessel, said apparatus comprising:
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a tube having a proximal end and a distal end, said distal end of said tube adapted for placement within the lumen of a blood vessel;
a wire loop extending from said distal end of the said tube, said wire loop having a first curved portion, a second curved portion, and a cusp portion for positioning wires within the blood vessel; and
means for constricting said wire loop. - View Dependent Claims (7)
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8. A method of capturing a guide wire within a lumen of a blood vessel, said method comprising the steps of:
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providing a snare instrument, said snare instrument including a tube and a snare wire, said tube having a proximal end and a distal end, said snare wire extending within said tube and capable of being extended from said distal end of said tube to form a wire loop having a first curved portion, a second curved portion and a cusp portion;
advancing said snare instrument through said lumen of said blood vessel;
extending said snare wire from said distal end of said tube within said blood vessel so that said snare wire forms said wire loop with said first curved portion, said second curved portion, and said cusp portion;
inserting an end of said guide wire through said wire loop;
constricting said wire loop to capture said end of said guide wire; and
withdrawing said snare instrument with the captured end of said guide wire from said blood vessel. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of intraluminally transferring a guide wire from a first branch artery of the aorta to a second branch artery of the aorta, said method comprising the steps of:
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positioning a guide wire having a proximal end and a distal end in a first branch artery of the aorta, said distal end of said guide wire extending from said first branch artery into said aorta, said proximal end of said guide wire extending through said first branch artery;
advancing a snare instrument through a second branch artery of said aorta to said aorta, said snare instrument including a tube and a snare wire, said tube having a proximal end and a distal end, said snare wire extending within said tube and capable of being extended from said distal end of said tube to form a wire loop having a first curved portion, a second curved portion and a cusp portion;
extending said snare wire from said distal end of said tube within said aorta so that said snare wire forms said wire loop with said first curved portion, said second curved portion, and said cusp portion, inserting said proximal end of said guide wire through said wire loop;
constricting said wire loop to capture said proximal end of said guide wire; and
withdrawing said snare instrument with the captured proximal end of said guide wire through said second branch artery. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification