Apparatus and method for endovascular device guiding and positioning using physiological parameters
First Claim
1. An endovascular navigation method comprising:
- wirelessly receiving an endovascular electrogram signal of a venous vasculature of a patient provided from an endovascular electrogram lead on a distal end of an elongate flexible member within the venous vasculature of the patient;
determining a first peak amplitude of a first P-wave and a first amplitude within a first QRS complex in a first heartbeat of the endovascular electrogram signal;
determining a second peak amplitude of a second P-wave and a second amplitude within a second ORS complex in a second heartbeat of the endovascular electrogram signal;
comparing the first peak amplitude of the first P-wave to the first amplitude within the first ORS complex to determine a first P-wave relative amplitude;
comparing the second peak amplitude of the second P-wave to the second amplitude within the second ORS complex to determine a second P-wave relative amplitude;
determining, in response to the second P-wave relative amplitude being greater than the first P-wave relative amplitude, that the position of the distal end of the elongate flexible member is within a predetermined structure within the venous vasculature of the patient;
displaying at least part of the endovascular electrogram signal provided by the endovascular electrogram lead over time; and
simultaneously displaying, in response to the determination that the position of the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, a visual indication that the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient,wherein the visual indication is different from the endovascular electrogram signal of the venous vasculature of the patient.
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Abstract
An endovascular navigation system and method are disclosed. The endovascular navigation system includes an elongate flexible member, a processor, and a display. The elongate flexible member includes an endovascular electrogram lead disposed at its distal end for sensing an endovascular electrogram signal of the venous vasculature of the patient, and a first wireless interface configured to wirelessly transmit the endovascular electrogram signal to the processor. The processor includes a second wireless interface configured to wirelessly receive the endovascular electrogram signal from the elongate flexible member. The processor is configured to determine that the position of the distal end of the elongate flexible member is within a predetermined structure within the venous vasculature of the patient. The display is configured to display a visual indication that the distal end of the elongate flexible member is within the predetermined structure.
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Citations
17 Claims
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1. An endovascular navigation method comprising:
- wirelessly receiving an endovascular electrogram signal of a venous vasculature of a patient provided from an endovascular electrogram lead on a distal end of an elongate flexible member within the venous vasculature of the patient;
determining a first peak amplitude of a first P-wave and a first amplitude within a first QRS complex in a first heartbeat of the endovascular electrogram signal; determining a second peak amplitude of a second P-wave and a second amplitude within a second ORS complex in a second heartbeat of the endovascular electrogram signal; comparing the first peak amplitude of the first P-wave to the first amplitude within the first ORS complex to determine a first P-wave relative amplitude; comparing the second peak amplitude of the second P-wave to the second amplitude within the second ORS complex to determine a second P-wave relative amplitude;
determining, in response to the second P-wave relative amplitude being greater than the first P-wave relative amplitude, that the position of the distal end of the elongate flexible member is within a predetermined structure within the venous vasculature of the patient;displaying at least part of the endovascular electrogram signal provided by the endovascular electrogram lead over time; and simultaneously displaying, in response to the determination that the position of the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, a visual indication that the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, wherein the visual indication is different from the endovascular electrogram signal of the venous vasculature of the patient. - View Dependent Claims (2)
- wirelessly receiving an endovascular electrogram signal of a venous vasculature of a patient provided from an endovascular electrogram lead on a distal end of an elongate flexible member within the venous vasculature of the patient;
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3. An endovascular navigation system, comprising:
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an elongate flexible member configured to access the venous vasculature of a patient, the elongate flexible member comprising; an endovascular electrogram lead disposed at a distal end of the elongate flexible member and configured to sense an endovascular electrogram signal of the venous vasculature of the patient; and a first wireless interface configured to wirelessly transmit the endovascular electrogram signal to a processor; the processor comprising a second wireless interface configured to wirelessly receive the endovascular electrogram signal from the elongate flexible member, the processor being configured to; determine a first peak amplitude of a first P-wave and a first amplitude within a first QRS complex in a first heartbeat of the endovascular electrogram signal; determine a second peak amplitude of a second P-wave and a second amplitude within a second QRS complex in a second heartbeat of the endovascular electrogram signal; compare the first peak amplitude of the first P-wave to the first amplitude within the first QRS complex to determine a first P-wave relative amplitude; compare the second peak amplitude of the second P-wave to the second amplitude within the second QRS complex to determine a second P-wave relative amplitude; and determine, in response to the second P-wave relative amplitude being greater than the first P-wave relative amplitude, that the position of the distal end of the elongate flexible member is within a predetermined structure within the venous vasculature of the patient; and a display configured to display, in response to the determination that the position of the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, a visual indication that the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, wherein the visual indication is different from the endovascular electrogram signal of the venous vasculature of the patient. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification