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US 5,156,151 AGranted
Endocardial mapping and ablation system and catheter probe
AssigneeCardiac Pathways Corporation
InventorMir Imran
Life of this patent
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AssigneeCardiac Pathways Corporation
InventorMir Imran
Estimating the term…
Endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart having blood therein comprising a catheter probe with proximal and distal extremities adn having an elongate tubular member with at least one lumen extending therethrough extending the length thereof and with a distal extremity. A plurality of longitudinally and radially spaced apart electrodes are provided. An expandable device is secured to the distal extemity of the flexible elongate tubular member and is movable between a contracted position and an expanded position. The electrodes are mounted on the expandable device whereby when the expandable device is moved to the expanded position in a chamber of the heart and electrodes are moved into engagement with the wall forming the chamber of the heart in which the expandable device is disposed. An elongate element is coupled to the expandable device for moving the expandable device between the contracted and expanded positions. The expandable device has spaces therein through which the blood can flow when the expandable device is in an expanded position. Leads are in contact with the electrodes and extending through the flexible elongate tubular member. Electrical apparatus is connected to the leads for performing electrical functions with respect to the electrodes.
An endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart having blood therein comprising a catheter probe having proximal and distal extremities and comprised of a flexible elongate tubular member having at least one lumen extending therethrough extending the length thereof and having a distal extremity, a plurality of longitudinally and radially spaced apart electrodes, expandable means secured to the distal extremity of the flexible elongate tubular member and being movable between a contracted position and an expanded position, means mounting said electrodes on said expandable means whereby when said expandable means is moved to the expanded position in the chamber of the heart the electrodes are moved into engagement with the wall forming the chamber of the heart, means coupled to the expandable means for moving said expandable means between said contracted and expanded positions, said expandable means having spaces therebetween when in the expanded position through which the blood can flow, lead means for conducting electrical energy in contact with the electrodes and extending into said flexible elongate tubular member and electrical means connected to said lead means for performing electrical functions with respect to said electrodes, said electrical means including a multiplexer mounted in the catheter probe and coupled to said lead means.
An endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall through a vessel having a lumen leading to the chamber comprising a catheter probe having proximal and distal extremities and being in the form of a flexible elongate tubular member having at least one lumen extending therethrough and extending the length thereof, a flexible cylindrical member secured to the distal extremity of the flexible elongate tubular member and movable between contracted and expanded position, said cylindrical member having a plurality of circumferentially spaced apart flexible arms having proximal and distal extremities which are secured to and form part of the cylindrical member, said arms having outer and inner surfaces, a plurality of longitudinally spaced apart electrodes carried by each of said arms on the outer surfaces of the arms, lead means for conducting electrical energy on the inner surfaces of the arms in contact with the electrodes and a pull wire extending through said at least one lumen and through said cylindrical member and adapted to engage the distal extremity of the cylindrical member for causing movement of the distal extremity of the cylindrical member axially toward the proximal extremity of the cylindrical member so that the arms of said cylindrical member are bowed outwardly to cause said electrodes carried thereby to come into contact with the wall, said arms being sufficiently flexible to remain in contact with the wall of the chamber while permitting movement of the wall during contraction and expansion of the chamber.
An endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall through a vessel having a lumen leading to the chamber comprising a catheter probe having proximal and distal extremities and being in the form of a flexible elongate tubular member having at least one lumen extending therethrough and extending the length thereof, a flexible cylindrical member secured to the distal extremity of the flexible elongate tubular member and movable between contracted and expanded position, said cylindrical member having a plurality of circumferentially spaced apart flexible arms having proximal and distal extremities which are secured to and form part o the cylindrical member, said arms having outer and inner surfaces, a plurality of longitudinally spaced apart electrodes carried by each of said arms on the outer surfaces of the arms, lead means for conducting electrical energy on the inner surfaces of the arms in contact with the electrodes and a pull wire extending through said at least one lumen and through said cylindrical member and adapted to engage the distal extremity of the cylindrical member for causing movement of the distal extremity of the cylindrical member axially toward the proximal extremity of the cylindrical member so that the arms of said cylindrical member are bowed outwardly to cause said electrodes carried thereby to come into contact with the wall, said arms being sufficiently flexible to remain in contact with the wall of the chamber while permitting movement of the wall during contraction and expansion of the chamber, electrical means coupled to said lead means for performing electrical functions with respect to said electrodes, said electrical means coupled to said lead means including a multiplexer mounted within the catheter probe and coupled to said lead means and a demultiplexer remote from the catheter probe connected to the multiplexer.
A catheter probe for use in endocardial mapping and/or ablation system comprising a flexible elongate element having proximal and distal extremities and having at least one lumen extending therethrough, a flexible cylindrical member secured to the distal extremity of the flexible elongate element and being movable between a normal contracted position and an expanded position, said cylindrical member having a plurality of circumferentially spaced longitudinally extending flexible arms having proximal and distal extremities which are secured to form a part of the cylindrical member, each of said arms having an outer surface and an inner surface, a plurality of spaced apart electrodes disposed on the outer surfaces of each of the arms, conductor means for conducting electrical energy including conductors carried by said arms on the inner surfaces of the arms and connected to said electrodes and extending to the proximal extremity of the flexible elongate element.
A catheter probe for use in endocardial mapping and/or ablation system comprising a flexible elongate element having proximal and distal extremities and having at least one lumen extending therethrough, a flexible cylindrical member secured to the distal extremity of the flexible elongate element and being movable between a normal contracted position and an expanded position, said cylindrical member having a plurality of circumferentially spaced longitudinally extending flexible arms having proximal and distal extremities which are secured to form a part of the cylindrical member, each of said arms having an outer surface and an inner surface, a plurality of spaced apart electrodes disposed on the outer surfaces of each of the arms, conductor means for conducting electrical energy including conductors carried by said arms on the inner surfaces of the arms and connected to said electrodes and extending to the proximal extremity of the flexible elongate element, said conductor means including a multiplexer, said multiplexer being disposed in close proximity to the cylindrical member and being connected to the conductors connected to the electrodes from the multiplexer through a lumen to the proximal extremity of the flexible elongate element.
A catheter probe for use in endocardial mapping and/or ablation system comprising a flexible elongate element having proximal and distal extremities and having at least one lumen extending therethrough, a flexible cylindrical member secured to the distal extremity of the flexible elongate elements and being movable between a normal contracted position and an expanded position, said cylindrical member having a plurality of circumferentially spaced longitudinally extending flexible arms having proximal and distal extremities which are secured to form a part of the cylindrical member, each of said arms having an outer surface and an inner surface, a plurality of spaced apart electrodes disposed on the outer surfaces of each of the arms, conductor means for conducting electrical energy including conductors carried by said arms on the inner surfaces of the arms and connected to said electrodes and extending to the proximal extremity of the flexible elongate element, a mandrel disposed in the distal extremity of the cylindrical member, said mandrel having a hole extending therethrough together with a pull wire extending through said flexible elongate element and said cylindrical member and through the hole in said mandrel, said pull wire having an enlargement on the distal extremity thereof which is of a size so that it cannot be pulled through the hole in the mandrel and serving to move the distal extremities of the cylindrical member toward the proximal extremity of the cylindrical member when the pull wire is pulled to cause movement of the cylindrical member from its normal contracted position to an expanded position.
In a catheter probe for use in endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart, the catheter probe comprising an elongate tubular member having at least one lumen extending therethrough extending the length thereof and having a distal extremity, a plurality of longitudinally and radially spaced apart electrodes, expandable means secured to the distal extremity of the flexible elongate tubular member and being movable between a contracted position and an expanded position, said expandable means including at least one flexible elongate element in the form of a helix, means mounting said electrodes on said expandable means whereby when said expandable means is moved to the expanded position in a chamber in the heart the electrodes are moved into engagement with the wall forming the chamber of the heart in which the expandable means is disposed, and means coupled to the expandable means for moving said expandable means between said contracted and expanded positions, said expandable means having spaces therein through which the blood can flow, means in contact with the electrodes and extending into said flexible elongate tubular member.
Dependencies are inferred from the claim text.