Snare
First Claim
1. A snare for snaring an article, comprising:
- a core cable having a proximal end portion and a circumference at a distal end portion; and
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 and the second side of the second loop being arranged with one crossing over the other at a first crossover point and being disconnected, the first side of the second loop and the second side of the third loop being arranged with one crossing over the other at a second crossover point and being disconnected, and the first side of the third loop and the second side of the first loop being arranged with one crossing over the other at a third crossover point and being disconnected, wherein the second side of the second loop is positioned inward of the first side of the first loop at the first crossover point, and wherein the second side of the third loop is positioned inward of the first side of the second loop at the second crossover point, and wherein the second side of the first loop is positioned inward of the first side of the third loop at the third crossover point, 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 each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, 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, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable, and the distal end portion of each of the first, second and third loops curves in the direction of the core cable.
21 Assignments
0 Petitions
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
22 Claims
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1. A snare for snaring an article, comprising:
- a core cable having a proximal end portion and a circumference at a distal end portion; and
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 and the second side of the second loop being arranged with one crossing over the other at a first crossover point and being disconnected, the first side of the second loop and the second side of the third loop being arranged with one crossing over the other at a second crossover point and being disconnected, and the first side of the third loop and the second side of the first loop being arranged with one crossing over the other at a third crossover point and being disconnected, wherein the second side of the second loop is positioned inward of the first side of the first loop at the first crossover point, and wherein the second side of the third loop is positioned inward of the first side of the second loop at the second crossover point, and wherein the second side of the first loop is positioned inward of the first side of the third loop at the third crossover point, 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 each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, 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, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable, and the distal end portion of each of the first, second and third loops curves in the direction of the core cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a core cable having a proximal end portion and a circumference at a distal end portion; and
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15. 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 and the second side of the second loop being arranged with one crossing over the other and being disconnected, the first side of the second loop and the second side of the third loop being arranged with one crossing over the other and being disconnected, and the first side of the third loop and the second side of the first loop being arranged with one crossing over the other and being disconnected, wherein the second side of the second loop is positioned inward of the first side of the first loop, and wherein the second side of the third loop is positioned inward of the first side of the second loop, and wherein the second side of the first loop is positioned inward of the first side of the third loop, 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 each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, 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, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable, and the distal end portion of each of the first, second and third loops curves in the direction of the core cable.
- View Dependent Claims (16)
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17. A snare for snaring an article, comprising:
- a core cable having a proximal end portion and a distal end portion; and
first, second and third loops formed from material including nitinol wire, 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 and being curved forwardly away from the mid-portions thereof, the first side of the first loop and the second side of the second loop being arranged with one crossing over the other and being disconnected, the first side of the second loop and the second side of the third loop being arranged with one crossing over the other and being disconnected, and the first side of the third loop and the second side of the first loop being arranged with one crossing over the other and being disconnected, the distal end portions of the first, second and third loops being disconnected from each other, wherein the second side of the second loop is positioned inward of the first side of the first loop, and wherein the second side of the third loop is positioned inward of the first side of the second loop, and wherein the second side of the first loop is positioned inward of the first side of the third loop, the proximal end portions of the first, second and third loops each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, 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 for grasping between at least one of the first, second and third loops the portion of the article in the space, 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, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, and the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable.
- a core cable having a proximal end portion and a distal end portion; and
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18. A snare for snaring an article, comprising:
- first, second and third cables, each of the first, second and third cables having a first portion, second portion and a loop portion spaced between the first portion and the second portion, each of the first, second, and third loop portions 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 portion, the distal end portions being positioned forward of the proximal end portions, the first side of the first loop portion and the second side of the second loop portion being arranged with one crossing over the other and being disconnected, the first side of the second loop portion and the second side of the third loop portion being arranged with one crossing over the other and being disconnected, and the first side of the third loop portion and the second side of the first loop portion being arranged with one crossing over the other and being disconnected, wherein the second side of the second loop is positioned inward of the first side of the first loop, and wherein the second side of the third loop is positioned inward of the first side of the second loop, and wherein the second side of the first loop is positioned inward of the first side of the third loop, the distal end portions of the first, second and third loop portions being disconnected from each other, the proximal end portions of the first, second and third loops each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, the first, second and third loop portions being movable between an open position whereat the first, second and third loop portions 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 loop portions 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 loop portions being disconnected from each other to permit independent movement of each as the first, second and third loop portions are moved between the open and closed positions, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, and the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable.
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19. 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 and the second side of the second loop being arranged with one crossing over the other and being disconnected, the first side of the second loop and the second side of the third loop being arranged with one crossing over the other and being disconnected, and the first side of the third loop and the second side of the first loop being arranged with one crossing over the other and being disconnected, 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 each comprising two proximal ends, each proximal end being directly coupled to and positioned around the circumference of the distal end portion of the core cable such that the two proximal ends of the first loop are separated from one another by one proximal end of the second loop and one proximal end of the third loop, the two proximal ends of the second loop are separated from one another by a proximal end of the first loop and a proximal end of the third loop, and the two proximal ends of the third loop are separated from one another by a proximal end of the first loop and a proximal end of the second loop, wherein the second side of the second loop is positioned inward of the first side of the first loop, and wherein the second side of the third loop is positioned inward of the first side of the second loop, and wherein the second side of the first loop is positioned inward of the first side of the third loop, 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, wherein the distal end portion of each of the first, second and third loops has an arcuate shape, the first, second and third loops when in the open position extend laterally outwardly and forward with the mid-portions of the first, second and third loops at an angle ranging from 90 to approximately 120 degrees relative to the distal end portion of the core cable, and the distal end portion of each of the first, second and third loops curves in the direction of the core cable; 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 (20, 21, 22)
- inserting a snare into the body vessel, the snare comprising;
Specification