Method and system for atrial defibrillation
First Claim
1. A method for atrial defibrillation in a patient in need thereof comprising:
- introducing into the patient a catheter comprising;
an elongated catheter body having proximal and distal ends and at least one lumen therethrough, anda basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly having proximal and distal ends and comprising a plurality of spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length, the electrode assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body;
introducing the electrode assembly into the heart of the patient; and
applying defibrillation energy to tissue of the heart through one or more of the elongated electrodes, wherein defibrillation energy is delivered to the heart tissue through only a portion of the spine electrodes, leaving one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue, wherein the spine electrodes through which defibrillation energy is delivered are shorted together.
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Accused Products
Abstract
A method and system for atrial defibrillation in a patient are provided. The method comprises introducing into the patient a catheter comprising an elongated catheter body having proximal and distal ends and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body. The electrode assembly has proximal and distal ends and comprises a plurality of spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length. The electrode assembly has an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body. The method further comprises introducing the electrode assembly into the heart of the patient and applying defibrillation energy to the tissue through one or more of the elongated electrodes. The system comprises a catheter as described above in combination with an external defibrillator electrically connected to the catheter.
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Citations
15 Claims
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1. A method for atrial defibrillation in a patient in need thereof comprising:
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introducing into the patient a catheter comprising; an elongated catheter body having proximal and distal ends and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly having proximal and distal ends and comprising a plurality of spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length, the electrode assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body; introducing the electrode assembly into the heart of the patient; and applying defibrillation energy to tissue of the heart through one or more of the elongated electrodes, wherein defibrillation energy is delivered to the heart tissue through only a portion of the spine electrodes, leaving one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue, wherein the spine electrodes through which defibrillation energy is delivered are shorted together. - View Dependent Claims (2, 3)
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4. A system for atrial defibrillation in a patient comprising:
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a catheter comprising; an elongated catheter body having proximal and distal ends, a length of about 90 cm, and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly having proximal and distal ends and comprising a plurality of spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length, the electrode assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body; an external defibrillator electrically connected to the catheter; and an interface switch box that connects the external defibrillator to the catheter and that permits the selection of the spine electrodes through which defibrillation energy is to be delivered. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A system for atrial defibrillation in a patient comprising:
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a catheter comprising; an elongated catheter body having proximal and distal ends, a length of at least about 90 cm, and at least one lumen therethrough, the catheter body having one or more ring electrodes mounted at or near its distal end, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly having proximal and distal ends and comprising at least three spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length, wherein each spine electrode has a length ranging from about 30 mm to about 80 mm, the electrode assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body, the electrode assembly having a tip electrode mounted at its distal end; an external defibrillator connected to the catheter; an interface switch box that connects the external defibrillator to the catheter and that permits the selection of spine electrodes through which defibrillation energy is to be delivered; an ECG recorder electrically connected to the catheter through the interface switch box; and an external pacer electrically connected to the catheter through the interface switch box.
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13. A method for atrial defibrillation in a patient in need thereof comprising:
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introducing into the patient a catheter comprising; an elongated catheter body having proximal and distal ends and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly having proximal and distal ends and comprising a plurality of spines connected at their proximal and distal ends, each spine comprising an elongated spine electrode along its length, the electrode assembly having an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body; introducing the electrode assembly into the heart of the patient; and applying defibrillation energy to the tissue of the heart through selected ones of the spine electrodes, leaving one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue, wherein the one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue are shorted together and function as a return electrode for the defibrillation energy.
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14. A method for atrial defibrillation in a patient in need thereof comprising:
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introducing into the patient a catheter comprising; an elongated catheter body having proximal and distal ends and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly comprising a plurality of spine electrodes and having an expanded arrangement and a collapsed arrangement; introducing the electrode assembly into the heart of the patient; and applying defibrillation energy to tissue of the heart through selected ones of the spine electrodes, leaving one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue, wherein the spine electrodes through which defibrillation energy is delivered are shorted together.
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15. A method for atrial defibrillation in a patient in need thereof comprising:
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introducing into the patient a catheter comprising; an elongated catheter body having proximal and distal ends and at least one lumen therethrough, and a basket-shaped electrode assembly at the distal end of the catheter body, the electrode assembly comprising a plurality of spine electrodes and having an expanded arrangement and a collapsed arrangement; introducing the electrode assembly into the heart of the patient; and applying defibrillation energy to tissue of the heart through selected ones of the spine electrodes, leaving one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue, wherein the one or more spine electrodes through which defibrillation energy is not delivered to the heart tissue are shorted together and function as a return electrode for the defibrillation energy.
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Specification