Sheathed multipolar catheter and multipolar guidewire for sensing cardiac electrical activity
First Claim
1. A multipolar sensing catheter having a distal end, a proximal end and a longitudinal axis comprising:
- a tubular shaft having an outer surface and an inner lumen extending therein and formed at least in part by a plurality of filaments, at least one of which is an insulated electrical conductor, each such insulated electrical conductor extending from a distal portion of the catheter to the proximal end thereof, and a fluoropolymeric sheath comprising tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride forming at least in part the outer surface of the catheter shaft, andat least one electrode pair situated in a distal portion of the catheter, each electrode of said at least one electrode pair being electrically connected to a separate insulated electrical conductor.
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Accused Products
Abstract
This invention is a medical device. It is a multipolar catheter assembly optionally in combination with a guidewire. Each of the catheter and the guidewire may be sheathed and have multiple electrodes at their distal ends. Because of their size and flexibility, the catheter and the guidewire may be used at virtually any point within the vasculature particularly, however, within the cardiac arteries or veins, perhaps in conjunction with external electrocardiogram leads, to map the body'"'"'s electrical activity. When used in the heart, they may be used to determine the source of a cardiac arrythmia. The intimate presence of the guidewire or catheter body in the cardiac vasculature allows the response time to changes in cardiac electrical activity is very quick. The invention is also a method for mapping the electrical activity of the heart by use of one or more of these inventive guidewires or catheters in the cardiac arteries or veins. They may also be used to determine the local electrical activity of any site within the body, such as in the brain.
250 Citations
23 Claims
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1. A multipolar sensing catheter having a distal end, a proximal end and a longitudinal axis comprising:
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a tubular shaft having an outer surface and an inner lumen extending therein and formed at least in part by a plurality of filaments, at least one of which is an insulated electrical conductor, each such insulated electrical conductor extending from a distal portion of the catheter to the proximal end thereof, and a fluoropolymeric sheath comprising tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride forming at least in part the outer surface of the catheter shaft, and at least one electrode pair situated in a distal portion of the catheter, each electrode of said at least one electrode pair being electrically connected to a separate insulated electrical conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In an intravascular assembly comprising a catheter having an inner lumen extending therein and a multipolar sensing guidewire slidably disposed within the inner lumen, the guidewire having
a distal end, a proximal end, and a longitudinal axis; -
an outer tube formed at least in part of a plurality of insulated electrical conductors extending from a distal section to a proximal section of the guidewire and having an outer fluoropolymeric coating covering a portion of an exterior surface of the outer tube comprising tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride; a plurality of electrodes on the distal section of the guidewire which are spaced apart from each other along the guidewire axis and which are electrically connected to individual insulated electrical conductors, and a core member within an inner lumen defined by the outer tube of the guidewire extending through the proximal and distal sections of the guidewire. - View Dependent Claims (14, 15, 16, 17, 20, 21)
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18. A multipolar sensing guidewire having
a distal end, a proximal end, and a longitudinal axis; -
an outer tube formed at least in part of a plurality of insulated electrical conductors extending from a distal section to a proximal section of the guidewire and having an outer fluoropolymeric coating comprising tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride which covers at least a portion of the outer tube, a plurality of electrodes on a distal section of the guidewire which are spaced apart from each other along the guidewire axis and which are electrically connected to individual insulated electrical conductors, and a core member within an inner lumen defined by the outer tube of the guidewire extending through the proximal and distal sections of the guidewire. - View Dependent Claims (19)
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22. An elongated intravascular device for detecting electrical activity within a body lumen of a patient, comprising:
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a) an elongated tubular shaft having proximal and distal shaft sections; b) a plurality of sensing electrodes mounted on the distal shaft section; c) a tubular member within the elongated tubular shaft which is formed from a plurality of individually insulated electrical conductors with each sensing electrode being electrically connected to a separate electrical conductor; and d) an outer fluoropolymeric coating covering at least part of the tubular member comprising tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride. - View Dependent Claims (23)
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Specification