Cardiac Mapping Instrument with Shapeable Electrode
First Claim
1. A system for pacing the heart comprising:
- an instrument including;
an elongated shaft defining a proximal section and a distal section, wherein the distal section forms an electrically conductive rounded tip, and further wherein the shaft is adapted to be transitionable from a straight state to a first bent state, the shaft independently maintaining distinct shapes in the straight state and the first bent state, and a non-conductive handle rigidly coupled to the proximal section of the shaft;
wherein an exterior of the shaft distal the handle and proximal the distal section is electrically non-conductive;
a grounding electrode; and
an energy source electrically connected to the tip and the grounding electrode, wherein the energy source comprises stimulation energy for pacing the heart.
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Accused Products
Abstract
An instrument including an elongated shaft and a non-conductive handle is disclosed. The shaft defines a proximal section and a distal section. The distal section forms an electrically conductive tip. Further, the shaft is adapted to be transitionable from a straight state to a first bent state. The shaft is capable of independently maintaining the distinct shapes associated with the straight state and the first bent state. The handle is rigidly coupled to the proximal section of the shaft. The instrument is useful for epicardial pacing and/or mapping of the heart for temporary pacing on a beating heart, for optimizing the placement of ventricular leads for the treatment of patients with congestive heart failure and ventricular dysynchrony and/or for use in surgical ablation procedures.
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Citations
56 Claims
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1. A system for pacing the heart comprising:
- an instrument including;
an elongated shaft defining a proximal section and a distal section, wherein the distal section forms an electrically conductive rounded tip, and further wherein the shaft is adapted to be transitionable from a straight state to a first bent state, the shaft independently maintaining distinct shapes in the straight state and the first bent state, and a non-conductive handle rigidly coupled to the proximal section of the shaft;
wherein an exterior of the shaft distal the handle and proximal the distal section is electrically non-conductive;a grounding electrode; and an energy source electrically connected to the tip and the grounding electrode, wherein the energy source comprises stimulation energy for pacing the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- an instrument including;
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21-46. -46. (canceled)
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47. A method of performing an ablation procedure, the method comprising:
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providing a first instrument including an elongated shaft and a handle, the shaft defining a proximal section rigidly coupled to the handle, a distal section forming an electrically conductive tip; positioning the tip of the first instrument through a patient'"'"'s chest; applying ablation energy to the tip of the first instrument while contacting cardiac tissue; creating an ablation lesion to isolate an area of cardiac tissue; providing a second instrument including an elongated shaft and a handle, the shaft defining a proximal section rigidly coupled to the handle, a distal section forming an electrically conductive tip; positioning the tip of the second instrument through a patient'"'"'s chest; and applying stimulation energy to the tip of the second instrument while contacting the area of isolated cardiac tissue to assess transmurality of the ablation lesion. - View Dependent Claims (48, 49, 50)
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51. A method of performing an ablation procedure, the method comprising:
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providing an instrument including an elongated shaft and a handle, the shaft defining a proximal section rigidly coupled to the handle, a distal section forming an electrically conductive tip; positioning the tip through a patient'"'"'s chest; applying ablation energy to the tip while contacting cardiac tissue; creating an ablation lesion to isolate an area of cardiac tissue; stopping the application of ablation energy to the tip; repositioning the tip; and applying stimulation energy to the tip while contacting the area of isolated cardiac tissue to assess transmurality of the ablation lesion. - View Dependent Claims (52, 53, 54)
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55. A method of performing a left sided epicardial lead placement procedure, the method comprising:
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providing an instrument including an elongated shaft and a handle, the shaft defining a proximal section rigidly coupled to the handle, a distal section forming an electrically conductive tip; positioning the tip through a patient'"'"'s chest to contact a first area of epicardial tissue of the patient'"'"'s left ventricle; applying stimulation energy to the patient'"'"'s right ventricle; recording the time at which a depolarization wave is sensed over the left ventricle following stimulation of the right ventricle; repositioning the tip to contact a second area of epicardial tissue of the patient'"'"'s left ventricle; reapplying stimulation energy to the patient'"'"'s right ventricle; recording the time at which the depolarization wave is sensed over the left ventricle following restimulation of the right ventricle; placing an epicardial lead in contact with the area of tissue that had the longest time interval at which the depolarization wave was sensed over the left ventricle following stimulation of the right ventricle.
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56. A method of performing an ablation procedure, the method comprising:
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providing an instrument including an elongated shaft and a handle, the shaft defining a proximal section rigidly coupled to the handle, a distal section forming an electrically conductive tip; advancing the tip of the instrument through a patient'"'"'s chest and into the patient'"'"'s coronary sinus; positioning the tip of the instrument in the patient'"'"'s coronary sinus between an existing lesion encircling at least a portion of the patient'"'"'s pulmonary veins and the annulus of the patient'"'"'s mitral valve; applying ablation energy to the tip of the instrument while the tip is positioned in the coronary sinus; and creating an ablation lesion in an area of cardiac tissue surrounding the tip.
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Specification