Stylets for use with apparatus for intravascular placement of a catheter
First Claim
1. A catheter placement system configured for positioning a catheter within a vasculature of a patient, comprising:
- a console having a display;
a plurality of electrodes located at a distal end of the catheter, of each the plurality of electrodes configured for sensing separate ECG signals of the patient, and the plurality of electrodes being operably connected to the console; and
a processor included with the console, the processor;
(i) performing a differential comparison of a plurality of ECG signals sensed by a subset of the plurality of electrodes with a baseline ECG signal sensed by a baseline electrode of the plurality of electrodes to determine resultant ECG signals and a position of the distal end of the catheter based on at least one of the resultant ECG signals;
(ii) identifying an amplitude of a P-wave from each of the resultant ECG signals; and
(iii) generating an output for the display that plots the amplitudes of the P-wave from the resultant ECG signals according to a position of each of the plurality of electrodes on the catheter.
1 Assignment
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Accused Products
Abstract
An integrated catheter placement system for accurately placing a catheter within a patient'"'"'s vasculature is disclosed. In one embodiment, the integrated system comprises a system console, a tip location sensor for temporary placement on the patient'"'"'s chest, and an ultrasound probe. The tip location sensor senses a magnetic field of a stylet disposed in a lumen of the catheter when the catheter is disposed in the vasculature. The ultrasound probe ultrasonically images a portion of the vasculature prior to introduction of the catheter. ECG signal-based catheter tip guidance is included in the integrated system to enable guidance of the catheter tip to a desired position with respect to a node of the patient'"'"'s heart. Stylets and catheters including various multiple bipolar and monopolar electrode configurations are also disclosed.
1549 Citations
12 Claims
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1. A catheter placement system configured for positioning a catheter within a vasculature of a patient, comprising:
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a console having a display; a plurality of electrodes located at a distal end of the catheter, of each the plurality of electrodes configured for sensing separate ECG signals of the patient, and the plurality of electrodes being operably connected to the console; and a processor included with the console, the processor; (i) performing a differential comparison of a plurality of ECG signals sensed by a subset of the plurality of electrodes with a baseline ECG signal sensed by a baseline electrode of the plurality of electrodes to determine resultant ECG signals and a position of the distal end of the catheter based on at least one of the resultant ECG signals; (ii) identifying an amplitude of a P-wave from each of the resultant ECG signals; and (iii) generating an output for the display that plots the amplitudes of the P-wave from the resultant ECG signals according to a position of each of the plurality of electrodes on the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification