Snare
First Claim
1. A snare for snaring an article, comprising:
- first, second and third loops, each of the first, second and third loops having a proximal end portion and a distal end portion, and a mid-portion therebetween, and being formed by spaced apart first and second sides connected together at the distal end portion of the loop, the distal end portions being positioned forward of the proximal end portions, the first side of the first loop arranged to cross over and be positioned inside of the second side of the second loop at a first crossover point, the first side of the second loop arranged to cross over and be positioned inside of the second side of the third loop at a second crossover point, and the first side of the third loop and arranged to cross over and be positioned inside of the second side of the first loop at a third crossover point, each of the loops being disconnected from the adjacent loops at the location of crossing, the distal end portions of the first, second and third loops being disconnected from each other, the first, second and third loops being movable between an open position whereat the first, second and third loops extend laterally outwardly with their distal end portions in an open position and define a space therebetween for receiving at least a portion of the article therein, and a collapsed position whereat the first, second and third loops are positioned laterally inwardly from their open position with their distal end portions in a closed position closer together than when in the open position, and the mid-portions of the first, second and third loops being disconnected from each other to permit independent movement of each as the first, second and third loops are moved between the open and closed positions.
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Accused Products
Abstract
A snare for snaring an article in a vessel of a vascular system or other body vessel. The snare includes a core cable having a proximal end portion and a distal end portion. The snare also includes first, second and third loops each having a proximal end portion and a distal end portion, and a mid-portion therebetween formed by spaced apart first and second sides connected together at the distal end portion of the loop. The mid-portions of each of the loops cross over mid portions of one of the other two loops, and the loops are only connected together at their proximal end portions, where they are gathered together and attached to the distal end portion of the core cable. The loops are movable between an open position and a closed position.
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Citations
19 Claims
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1. A snare for snaring an article, comprising:
- first, second and third loops, each of the first, second and third loops having a proximal end portion and a distal end portion, and a mid-portion therebetween, and being formed by spaced apart first and second sides connected together at the distal end portion of the loop, the distal end portions being positioned forward of the proximal end portions, the first side of the first loop arranged to cross over and be positioned inside of the second side of the second loop at a first crossover point, the first side of the second loop arranged to cross over and be positioned inside of the second side of the third loop at a second crossover point, and the first side of the third loop and arranged to cross over and be positioned inside of the second side of the first loop at a third crossover point, each of the loops being disconnected from the adjacent loops at the location of crossing, the distal end portions of the first, second and third loops being disconnected from each other, the first, second and third loops being movable between an open position whereat the first, second and third loops extend laterally outwardly with their distal end portions in an open position and define a space therebetween for receiving at least a portion of the article therein, and a collapsed position whereat the first, second and third loops are positioned laterally inwardly from their open position with their distal end portions in a closed position closer together than when in the open position, and the mid-portions of the first, second and third loops being disconnected from each other to permit independent movement of each as the first, second and third loops are moved between the open and closed positions.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for snaring an article inside a body vessel, comprising:
- inserting a snare into the body vessel, the snare comprising;
a core cable having a proximal end portion and a distal end portion;
first, second and third loops, each of the first, second and third loops having a proximal end portion and a distal end portion, and a mid-portion therebetween, and being formed by spaced apart first and second sides connected together at the distal end portion of the loop, the distal end portions being positioned forward of the proximal end portions, the first side of the first loop arranged to cross over and be positioned inside of the second side of the second loop at a first crossover point, the first side of the second loop and arranged to cross over and be positioned inside of the second side of the third loop at a second crossover point, and the first side of the third loop and arranged to cross over and be positioned inside of the second side of the first loop at a third crossover point, each of the loops being disconnected from the adjacent loops each of the loops being disconnected from the adjacent loops at the location of crossing, the distal end portions of the first, second and third loops being disconnected from each other, the proximal end portions of the first, second and third loops being gathered together and attached to the distal end portion of the core cable, the first, second and third loops being movable between an open position whereat the first, second and third loops extend laterally outwardly with their distal end portions in an open position and define a space therebetween for receiving at least a portion of the article therein, and a collapsed position whereat the first, second and third loops are positioned laterally inwardly from their open position with their distal end portions in a closed position closer together than when in the open position, and the mid-portions of the first, second and third loops being disconnected from each other to permit independent movement of each as the first, second and third loops are moved between the open and closed positions; and
an elongate sheath adapted to penetrate into a body vessel and sized to receive the first, second and third loops, the elongate sheath including a proximal end and a distal end having a distal end opening;
selectively manipulating at least one of the proximal end of the core cable and the proximal end of the elongate sheath to selectively retract the first, second and third loops within the distal end opening and to selectively protract the first, second and third loops from the distal end opening. - View Dependent Claims (17, 18, 19)
- inserting a snare into the body vessel, the snare comprising;
Specification