Patent ID: 11918339
Assignee: BARD ACCESS SYSTEMS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A method of utilizing an ECG signal for reconfirming a tip location of a static CVC catheter previously placed within a patient, the method comprising:
coupling an ivECG acquisition module with a distal end of the static CVC catheter previously placed within the patient by way of an adaptor for subsequently establishing an electrical pathway between the distal end of the static CVC catheter and the ivECG acquisition module;
establishing the electrical pathway between the distal end of the static CVC catheter and the ivECG acquisition module by way of a saline column or an electrically conductive device, the distal end disposed within a vasculature of the patient and a proximal end disposed external to the patient;
receiving ivECG signal data from the distal end of the static CVC catheter;
deriving a P×I (proximity index) parameter, wherein the PxI parameter is a chaos theory complexity parameter associated with variability of the ivECG signal data; and
providing an output indicative of proximity of the tip of the static CVC catheter to a cavoatrial junction of the patient, wherein the output is one or more of an audio signal, a visual signal, and a tactile signal.