Patent ID: 9737225
Date: 2017-08-22
CPC Classifications: A61B

Claim:
1. A patch and sensor assembly for use with a device mapping system capable of mapping a relative location of a device within the body of a patient comprising: a reusable portion and a separate disposable portion, the reusable portion comprising: a magnetic-based biosensor configured to generate magnetic field based location information signals in response to externally applied magnetic fields from at least one magnetic field generator fixed to an external reference frame, and to provide the magnetic field based location information signals to the device mapping system, wherein the magnetic field based location information is indicative of the relative position of the patch and sensor assembly within the external reference frame; a housing adapted to house the biosensor; a first electrical lead for communicating the magnetic field based information signals from the biosensor to the device mapping system; and, the separate disposable portion comprising: an adhesive hydrogel layer for adhering the disposable portion to the body of the patient; an electrode layer disposed on the adhesive hydrogel layer, the adhesive hydrogel layer and the electrode layer being part of a first electrode element, wherein the first electrode element is configured to conduct and communicate an impedance-based electrical signal directly to the device mapping system, the impedance-based electrical signal is the result of energy flowing through the body of the patient from an interbody-electrode on the device to the first electrode element and is indicative of the location the device within the body relative to the patch and sensor assembly; a foam layer disposed on a portion of the electrode layer; and, an engagement element adapted to detachably receive at least a portion of the housing of the reusable portion.